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  • Articles  (2,148)
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  • 1
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    Sex bias blights drug studies (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-03-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Check Hayden, Erika -- England -- Nature. 2010 Mar 18;464(7287):332-3. doi: 10.1038/464332b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20237530" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bias (Epidemiology) ; Biomedical Research/*methods ; Clinical Trials as Topic/methods ; Drug Evaluation/*methods ; Female ; Humans ; Male ; Patient Selection ; Prejudice ; *Sex Characteristics ; Sex Distribution
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
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    The primate connection (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-07-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trivedi, Bijal -- England -- Nature. 2010 Jul 15;466(7304):S5. doi: 10.1038/nature09236.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20631704" target="_blank"〉PubMed〈/a〉
    Keywords: AIDS Vaccines/immunology ; Animals ; Chronic Disease ; Disease Models, Animal ; Disease Progression ; Female ; Genome, Viral/genetics ; HIV Infections/*immunology/physiopathology/virology ; HIV-1/genetics/growth & development/immunology ; Host-Pathogen Interactions/immunology ; Immunity, Innate/immunology ; Inflammation/immunology/pathology ; Interleukin-17/immunology ; Macaca/immunology/virology ; Male ; Physiology, Comparative/methods ; Primates/*immunology/metabolism/*virology ; Receptors, HIV/metabolism ; Simian Acquired Immunodeficiency Syndrome/*immunology/metabolism/virology ; Simian Immunodeficiency Virus/classification/genetics/pathogenicity/*physiology ; T-Lymphocytes, Helper-Inducer/immunology/pathology ; Viral Load
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
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    Males still dominate animal studies (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-06-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zucker, Irving -- Beery, Annaliese K -- England -- Nature. 2010 Jun 10;465(7299):690. doi: 10.1038/465690a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departmentsof Psychology, Helen Wills Neuroscience Institute, University of California, Berkeley, California 94720, USA. irvzuck@berkeley.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20535186" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bias (Epidemiology) ; Biomedical Research/ethics/*methods/trends ; *Disease Models, Animal ; Female ; Humans ; Male ; Prevalence ; *Sex Characteristics ; Sex Distribution ; Sex Factors
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 4
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    Foot strike patterns and collision forces in habitually barefoot versus shod runners (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-01-30
    Description: Humans have engaged in endurance running for millions of years, but the modern running shoe was not invented until the 1970s. For most of human evolutionary history, runners were either barefoot or wore minimal footwear such as sandals or moccasins with smaller heels and little cushioning relative to modern running shoes. We wondered how runners coped with the impact caused by the foot colliding with the ground before the invention of the modern shoe. Here we show that habitually barefoot endurance runners often land on the fore-foot (fore-foot strike) before bringing down the heel, but they sometimes land with a flat foot (mid-foot strike) or, less often, on the heel (rear-foot strike). In contrast, habitually shod runners mostly rear-foot strike, facilitated by the elevated and cushioned heel of the modern running shoe. Kinematic and kinetic analyses show that even on hard surfaces, barefoot runners who fore-foot strike generate smaller collision forces than shod rear-foot strikers. This difference results primarily from a more plantarflexed foot at landing and more ankle compliance during impact, decreasing the effective mass of the body that collides with the ground. Fore-foot- and mid-foot-strike gaits were probably more common when humans ran barefoot or in minimal shoes, and may protect the feet and lower limbs from some of the impact-related injuries now experienced by a high percentage of runners.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lieberman, Daniel E -- Venkadesan, Madhusudhan -- Werbel, William A -- Daoud, Adam I -- D'Andrea, Susan -- Davis, Irene S -- Mang'eni, Robert Ojiambo -- Pitsiladis, Yannis -- England -- Nature. 2010 Jan 28;463(7280):531-5. doi: 10.1038/nature08723.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Evolutionary Biology, 11 Divinity Avenue, Harvard University, Cambridge, Massachusetts 02138, USA. danlieb@fas.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20111000" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Biomechanical Phenomena ; Child ; Female ; Foot/*physiology ; Forefoot, Human/physiology ; Gait/physiology ; Humans ; Kenya ; Male ; Running/*physiology ; *Shoes/standards ; *Stress, Mechanical ; United States ; Weight-Bearing/physiology ; Young Adult
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 5
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    Amygdalar and hippocampal substrates of anxious temperament differ in their heritability (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-08-13
    Description: Anxious temperament (AT) in human and non-human primates is a trait-like phenotype evident early in life that is characterized by increased behavioural and physiological reactivity to mildly threatening stimuli. Studies in children demonstrate that AT is an important risk factor for the later development of anxiety disorders, depression and comorbid substance abuse. Despite its importance as an early predictor of psychopathology, little is known about the factors that predispose vulnerable children to develop AT and the brain systems that underlie its expression. To characterize the neural circuitry associated with AT and the extent to which the function of this circuit is heritable, we studied a large sample of rhesus monkeys phenotyped for AT. Using 238 young monkeys from a multigenerational single-family pedigree, we simultaneously assessed brain metabolic activity and AT while monkeys were exposed to the relevant ethological condition that elicits the phenotype. High-resolution (18)F-labelled deoxyglucose positron-emission tomography (FDG-PET) was selected as the imaging modality because it provides semi-quantitative indices of absolute glucose metabolic rate, allows for simultaneous measurement of behaviour and brain activity, and has a time course suited for assessing temperament-associated sustained brain responses. Here we demonstrate that the central nucleus region of the amygdala and the anterior hippocampus are key components of the neural circuit predictive of AT. We also show significant heritability of the AT phenotype by using quantitative genetic analysis. Additionally, using voxelwise analyses, we reveal significant heritability of metabolic activity in AT-associated hippocampal regions. However, activity in the amygdala region predictive of AT is not significantly heritable. Furthermore, the heritabilities of the hippocampal and amygdala regions significantly differ from each other. Even though these structures are closely linked, the results suggest differential influences of genes and environment on how these brain regions mediate AT and the ongoing risk of developing anxiety and depression.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2998538/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2998538/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Oler, Jonathan A -- Fox, Andrew S -- Shelton, Steven E -- Rogers, Jeffrey -- Dyer, Thomas D -- Davidson, Richard J -- Shelledy, Wendy -- Oakes, Terrence R -- Blangero, John -- Kalin, Ned H -- MH018931/MH/NIMH NIH HHS/ -- MH046729/MH/NIMH NIH HHS/ -- MH059490/MH/NIMH NIH HHS/ -- MH081884/MH/NIMH NIH HHS/ -- MH084051/MH/NIMH NIH HHS/ -- P50 MH084051/MH/NIMH NIH HHS/ -- P50 MH084051-030001/MH/NIMH NIH HHS/ -- R01 MH046729/MH/NIMH NIH HHS/ -- R01 MH046729-17/MH/NIMH NIH HHS/ -- R01 MH081884/MH/NIMH NIH HHS/ -- R01 MH081884-04/MH/NIMH NIH HHS/ -- R37 MH059490/MH/NIMH NIH HHS/ -- R37 MH059490-13/MH/NIMH NIH HHS/ -- England -- Nature. 2010 Aug 12;466(7308):864-8. doi: 10.1038/nature09282.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Psychiatry, University of Wisconsin-Madison, Madison, Wisconsin 53719, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20703306" target="_blank"〉PubMed〈/a〉
    Keywords: Amygdala/*metabolism ; Animals ; Anxiety/*genetics/*physiopathology ; Depression/genetics ; Female ; Freezing Reaction, Cataleptic ; Genetic Predisposition to Disease/*genetics ; Glucose/metabolism ; *Heredity ; Hippocampus/*metabolism ; Macaca mulatta/genetics/physiology ; Male ; Models, Animal ; Neural Pathways/physiology ; Pedigree ; Phenotype ; Positron-Emission Tomography ; Stress, Psychological ; Temperament/*physiology ; Temporal Lobe/metabolism ; Vocalization, Animal
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 6
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    Forgotten lessons (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-07-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Basu, Paroma -- England -- Nature. 2010 Jul 15;466(7304):S14-5. doi: 10.1038/nature09241.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20631697" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/drug therapy/epidemiology/prevention & ; control/psychology/transmission ; Adult ; Child ; Chronic Disease/drug therapy/epidemiology/prevention & control/psychology ; Community-Institutional Relations ; Developed Countries/*statistics & numerical data ; Female ; HIV Infections/drug therapy/*epidemiology/prevention & ; control/*psychology/transmission ; Health Education ; Humans ; Incidence ; Male ; Patient Compliance/psychology/statistics & numerical data ; Risk-Taking ; Safe Sex/*psychology/*statistics & numerical data ; Viral Load/drug effects
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 7
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    Competition drives cooperation among closely related sperm of deer mice (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-01-22
    Description: Among the extraordinary adaptations driven by sperm competition is the cooperative behaviour of spermatozoa. By forming cooperative groups, sperm can increase their swimming velocity and thereby gain an advantage in intermale sperm competition. Accordingly, selection should favour cooperation of the most closely related sperm to maximize fitness. Here we show that sperm of deer mice (genus Peromyscus) form motile aggregations, then we use this system to test predictions of sperm cooperation. We find that sperm aggregate more often with conspecific than heterospecific sperm, suggesting that individual sperm can discriminate on the basis of genetic relatedness. Next, we provide evidence that the cooperative behaviour of closely related sperm is driven by sperm competition. In a monogamous species lacking sperm competition, Peromyscus polionotus, sperm indiscriminately group with unrelated conspecific sperm. In contrast, in the highly promiscuous deer mouse, Peromyscus maniculatus, sperm are significantly more likely to aggregate with those obtained from the same male than with sperm from an unrelated conspecific donor. Even when we test sperm from sibling males, we continue to see preferential aggregations of related sperm in P. maniculatus. These results suggest that sperm from promiscuous deer mice discriminate among relatives and thereby cooperate with the most closely related sperm, an adaptation likely to have been driven by sperm competition.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2824558/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2824558/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fisher, Heidi S -- Hoekstra, Hopi E -- F32 GM084719/GM/NIGMS NIH HHS/ -- F32 GM084719-02/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Feb 11;463(7282):801-3. doi: 10.1038/nature08736. Epub 2010 Jan 20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Museum of Comparative Zoology, Cambridge, Massachusetts 02138, USA. hfisher@oeb.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20090679" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Aggregation ; Competitive Behavior/*physiology ; *Cooperative Behavior ; Copulation/physiology ; Female ; Male ; Peromyscus/*classification/*physiology ; Sexual Behavior, Animal/*physiology ; Species Specificity ; Sperm Motility/physiology ; Spermatozoa/*physiology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 8
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    Regulation of myeloid leukaemia by the cell-fate determinant Musashi (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-07-20
    Description: Chronic myelogenous leukaemia (CML) can progress from a slow growing chronic phase to an aggressive blast crisis phase, but the molecular basis of this transition remains poorly understood. Here we have used mouse models of CML to show that disease progression is regulated by the Musashi-Numb signalling axis. Specifically, we find that the chronic phase is marked by high levels of Numb expression whereas the blast crisis phase has low levels of Numb expression, and that ectopic expression of Numb promotes differentiation and impairs advanced-phase disease in vivo. As a possible explanation for the decreased levels of Numb in the blast crisis phase, we show that NUP98-HOXA9, an oncogene associated with blast crisis CML, can trigger expression of the RNA-binding protein Musashi2 (Msi2), which in turn represses Numb. Notably, loss of Msi2 restores Numb expression and significantly impairs the development and propagation of blast crisis CML in vitro and in vivo. Finally we show that Msi2 expression is not only highly upregulated during human CML progression but is also an early indicator of poorer prognosis. These data show that the Musashi-Numb pathway can control the differentiation of CML cells, and raise the possibility that targeting this pathway may provide a new strategy for the therapy of aggressive leukaemias.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2918284/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2918284/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ito, Takahiro -- Kwon, Hyog Young -- Zimdahl, Bryan -- Congdon, Kendra L -- Blum, Jordan -- Lento, William E -- Zhao, Chen -- Lagoo, Anand -- Gerrard, Gareth -- Foroni, Letizia -- Goldman, John -- Goh, Harriet -- Kim, Soo-Hyun -- Kim, Dong-Wook -- Chuah, Charles -- Oehler, Vivian G -- Radich, Jerald P -- Jordan, Craig T -- Reya, Tannishtha -- AI067798/AI/NIAID NIH HHS/ -- CA122206/CA/NCI NIH HHS/ -- CA140371/CA/NCI NIH HHS/ -- CA18029/CA/NCI NIH HHS/ -- DK072234/DK/NIDDK NIH HHS/ -- DK63031/DK/NIDDK NIH HHS/ -- DP1 CA174422/CA/NCI NIH HHS/ -- DP1 OD006430/OD/NIH HHS/ -- DP1 OD006430-01/OD/NIH HHS/ -- DP1 OD006430-02/OD/NIH HHS/ -- DP1OD006430/OD/NIH HHS/ -- HL097767/HL/NHLBI NIH HHS/ -- P01 CA018029/CA/NCI NIH HHS/ -- R01 CA140371/CA/NCI NIH HHS/ -- R01 DK063031/DK/NIDDK NIH HHS/ -- R01 DK063031-01/DK/NIDDK NIH HHS/ -- R01 DK063031-01S1/DK/NIDDK NIH HHS/ -- R01 DK063031-02/DK/NIDDK NIH HHS/ -- R01 DK063031-03/DK/NIDDK NIH HHS/ -- R01 DK063031-04/DK/NIDDK NIH HHS/ -- R01 DK063031-05/DK/NIDDK NIH HHS/ -- R01 DK063031-06/DK/NIDDK NIH HHS/ -- R01 DK063031-07/DK/NIDDK NIH HHS/ -- R01 DK063031-07S1/DK/NIDDK NIH HHS/ -- R01 DK063031-08/DK/NIDDK NIH HHS/ -- R01 DK072234/DK/NIDDK NIH HHS/ -- R01 DK072234-01A1/DK/NIDDK NIH HHS/ -- R01 DK072234-02/DK/NIDDK NIH HHS/ -- R01 DK072234-03/DK/NIDDK NIH HHS/ -- R01 DK072234-04/DK/NIDDK NIH HHS/ -- R01 HL097767/HL/NHLBI NIH HHS/ -- R01 HL097767-01/HL/NHLBI NIH HHS/ -- R01 HL097767-02/HL/NHLBI NIH HHS/ -- T32 GM007184-33/GM/NIGMS NIH HHS/ -- U19 AI067798/AI/NIAID NIH HHS/ -- U19 AI067798-010006/AI/NIAID NIH HHS/ -- U19 AI067798-020006/AI/NIAID NIH HHS/ -- U19 AI067798-030006/AI/NIAID NIH HHS/ -- U19 AI067798-040006/AI/NIAID NIH HHS/ -- U19 AI067798-050006/AI/NIAID NIH HHS/ -- England -- Nature. 2010 Aug 5;466(7307):765-8. doi: 10.1038/nature09171. Epub 2010 Jul 18.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, North Carolina 27710, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20639863" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Blast Crisis/genetics/metabolism/pathology ; *Cell Differentiation/genetics ; Disease Progression ; Fusion Proteins, bcr-abl/genetics/metabolism ; Gene Expression Regulation, Neoplastic ; Homeodomain Proteins/genetics/metabolism ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics/*metabolism/*pathology ; Membrane Proteins/biosynthesis/genetics/metabolism ; Mice ; Mice, Inbred C57BL ; Nerve Tissue Proteins/biosynthesis/genetics/metabolism ; Nuclear Pore Complex Proteins/genetics/metabolism ; Oncogene Proteins, Fusion/genetics/metabolism ; Prognosis ; RNA-Binding Proteins/biosynthesis/genetics/*metabolism ; Receptor, Notch1/metabolism ; Signal Transduction ; Tumor Suppressor Protein p53/metabolism ; Up-Regulation
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 9
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    A systems approach (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-05-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chi, Kelly Rae -- England -- Nature. 2010 Apr 15;464(7291):1090-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20503480" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/genetics/metabolism/pathology/therapy ; Computational Biology/education/manpower/trends ; Female ; Genetic Heterogeneity ; Humans ; Models, Biological ; Neoplasms/genetics/*metabolism/*pathology/therapy ; Research Personnel/education ; Systems Biology/education/manpower/*trends
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 10
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    Induction of tumour immunity by targeted inhibition of nonsense-mediated mRNA decay (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-05-14
    Description: The main reason why tumours are not controlled by the immune system is that, unlike pathogens, they do not express potent tumour rejection antigens (TRAs). Tumour vaccination aims at stimulating a systemic immune response targeted to, mostly weak, antigens expressed in the disseminated tumour lesions. Main challenges in developing effective vaccination protocols are the identification of potent and broadly expressed TRAs and effective adjuvants to stimulate a robust and durable immune response. Here we describe an alternative approach in which the expression of new, and thereby potent, antigens are induced in tumour cells by inhibiting nonsense-mediated messenger RNA decay (NMD). Small interfering RNA (siRNA)-mediated inhibition of NMD in tumour cells led to the expression of new antigenic determinants and their immune-mediated rejection. In subcutaneous and metastatic tumour models, tumour-targeted delivery of NMD factor-specific siRNAs conjugated to oligonucleotide aptamer ligands led to significant inhibition of tumour growth that was superior to that of vaccination with granulocyte-macrophage colony-stimulating factor (GM-CSF)-expressing irradiated tumour cells, and could be further enhanced by co-stimulation. Tumour-targeted NMD inhibition forms the basis of a simple, broadly useful, and clinically feasible approach to enhance the antigenicity of disseminated tumours leading to their immune recognition and rejection. The cell-free chemically synthesized oligonucleotide backbone of aptamer-siRNAs reduces the risk of immunogenicity and enhances the feasibility of generating reagents suitable for clinical use.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3107067/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3107067/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pastor, Fernando -- Kolonias, Despina -- Giangrande, Paloma H -- Gilboa, Eli -- R01 CA138503/CA/NCI NIH HHS/ -- R01 CA151857-02/CA/NCI NIH HHS/ -- England -- Nature. 2010 May 13;465(7295):227-30. doi: 10.1038/nature08999.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology & Immunology, Dodson Interdisciplinary Immunotherapy Institute, University of Miami Miller School of Medicine Miami, Florida 33134, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20463739" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm/*genetics/*immunology ; Aptamers, Nucleotide/genetics ; Cancer Vaccines/genetics/immunology/metabolism ; Carrier Proteins/genetics ; Cell Line, Tumor ; Chickens/genetics ; Colonic Neoplasms/*genetics/*immunology/pathology ; Gene Expression Regulation, Neoplastic ; Granulocyte-Macrophage Colony-Stimulating Factor/genetics/metabolism ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Mice, Nude ; Neoplasm Transplantation ; RNA Interference ; RNA Stability/*genetics ; RNA, Small Interfering/*genetics/therapeutic use ; Xenograft Model Antitumor Assays
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 11
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    Neuroscience: Sexy circuits (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-12-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Benton, Richard -- England -- Nature. 2010 Dec 2;468(7324):638-40. doi: 10.1038/468638a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21124442" target="_blank"〉PubMed〈/a〉
    Keywords: Acetates/pharmacology ; Animals ; Drosophila Proteins/genetics/metabolism ; Drosophila melanogaster/anatomy & histology/*cytology/*drug effects/physiology ; Female ; Gene Expression Regulation ; Male ; Nerve Tissue Proteins/genetics/metabolism ; Neuroanatomical Tract-Tracing Techniques/methods ; Oleic Acids/pharmacology ; Olfactory Pathways/anatomy & histology/cytology/*drug effects ; Olfactory Perception/drug effects/physiology ; Pheromones/*pharmacology ; Sensory Receptor Cells/drug effects/physiology ; *Sex Characteristics ; Sexual Behavior, Animal/physiology ; Transcription Factors/genetics/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    Lkb1 regulates quiescence and metabolic homeostasis of haematopoietic stem cells (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-12-03
    Description: The capacity to fine-tune cellular bioenergetics with the demands of stem-cell maintenance and regeneration is central to normal development and ageing, and to organismal survival during periods of acute stress. How energy metabolism and stem-cell homeostatic processes are coordinated is not well understood. Lkb1 acts as an evolutionarily conserved regulator of cellular energy metabolism in eukaryotic cells and functions as the major upstream kinase to phosphorylate AMP-activated protein kinase (AMPK) and 12 other AMPK-related kinases. Whether Lkb1 regulates stem-cell maintenance remains unknown. Here we show that Lkb1 has an essential role in haematopoietic stem cell (HSC) homeostasis. We demonstrate that ablation of Lkb1 in adult mice results in severe pancytopenia and subsequent lethality. Loss of Lkb1 leads to impaired survival and escape from quiescence of HSCs, resulting in exhaustion of the HSC pool and a marked reduction of HSC repopulating potential in vivo. Lkb1 deletion has an impact on cell proliferation in HSCs, but not on more committed compartments, pointing to context-specific functions for Lkb1 in haematopoiesis. The adverse impact of Lkb1 deletion on haematopoiesis was predominantly cell-autonomous and mTOR complex 1 (mTORC1)-independent, and involves multiple mechanisms converging on mitochondrial apoptosis and possibly downregulation of PGC-1 coactivators and their transcriptional network, which have critical roles in mitochondrial biogenesis and function. Thus, Lkb1 serves as an essential regulator of HSCs and haematopoiesis, and more generally, points to the critical importance of coupling energy metabolism and stem-cell homeostasis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058342/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058342/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gan, Boyi -- Hu, Jian -- Jiang, Shan -- Liu, Yingchun -- Sahin, Ergun -- Zhuang, Li -- Fletcher-Sananikone, Eliot -- Colla, Simona -- Wang, Y Alan -- Chin, Lynda -- Depinho, Ronald A -- 01CA141508/CA/NCI NIH HHS/ -- R21 CA135057/CA/NCI NIH HHS/ -- R21 CA135057-01/CA/NCI NIH HHS/ -- R21CA135057/CA/NCI NIH HHS/ -- U01 CA141508/CA/NCI NIH HHS/ -- U01 CA141508-01/CA/NCI NIH HHS/ -- England -- Nature. 2010 Dec 2;468(7324):701-4. doi: 10.1038/nature09595.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Belfer Institute for Applied Cancer Science, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21124456" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Cell Cycle/*physiology ; Cell Proliferation ; Cell Survival ; *Energy Metabolism ; Female ; Gene Deletion ; Hematopoiesis ; Hematopoietic Stem Cells/*cytology/*metabolism/pathology ; *Homeostasis ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Mitochondria/metabolism/pathology ; Multiprotein Complexes ; Pancytopenia/genetics ; Phenotype ; Protein-Serine-Threonine Kinases/deficiency/genetics/*metabolism ; Proteins/metabolism ; Survival Analysis ; TOR Serine-Threonine Kinases ; Transcription Factors/metabolism
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    Genome-wide RNAi screen identifies human host factors crucial for influenza virus replication (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-01-19
    Description: Influenza A virus, being responsible for seasonal epidemics and reoccurring pandemics, represents a worldwide threat to public health. High mutation rates facilitate the generation of viral escape mutants, rendering vaccines and drugs directed against virus-encoded targets potentially ineffective. In contrast, targeting host cell determinants temporarily dispensable for the host but crucial for virus replication could prevent viral escape. Here we report the discovery of 287 human host cell genes influencing influenza A virus replication in a genome-wide RNA interference (RNAi) screen. Using an independent assay we confirmed 168 hits (59%) inhibiting either the endemic H1N1 (119 hits) or the current pandemic swine-origin (121 hits) influenza A virus strains, with an overlap of 60%. Notably, a subset of these common hits was also essential for replication of a highly pathogenic avian H5N1 strain. In-depth analyses of several factors provided insights into their infection stage relevance. Notably, SON DNA binding protein (SON) was found to be important for normal trafficking of influenza virions to late endosomes early in infection. We also show that a small molecule inhibitor of CDC-like kinase 1 (CLK1) reduces influenza virus replication by more than two orders of magnitude, an effect connected with impaired splicing of the viral M2 messenger RNA. Furthermore, influenza-virus-infected p27(-/-) (cyclin-dependent kinase inhibitor 1B; Cdkn1b) mice accumulated significantly lower viral titres in the lung, providing in vivo evidence for the importance of this gene. Thus, our results highlight the potency of genome-wide RNAi screening for the dissection of virus-host interactions and the identification of drug targets for a broad range of influenza viruses.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Karlas, Alexander -- Machuy, Nikolaus -- Shin, Yujin -- Pleissner, Klaus-Peter -- Artarini, Anita -- Heuer, Dagmar -- Becker, Daniel -- Khalil, Hany -- Ogilvie, Lesley A -- Hess, Simone -- Maurer, Andre P -- Muller, Elke -- Wolff, Thorsten -- Rudel, Thomas -- Meyer, Thomas F -- England -- Nature. 2010 Feb 11;463(7282):818-22. doi: 10.1038/nature08760. Epub 2010 Jan 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biology Department, Max Planck Institute for Infection Biology, Chariteplatz 1, 10117 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20081832" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Factors/genetics/metabolism ; Cell Line ; Cells, Cultured ; Chick Embryo ; Cyclin-Dependent Kinase Inhibitor p27/deficiency/genetics/metabolism ; Epithelial Cells/virology ; Genome, Human/genetics ; *Host-Pathogen Interactions/genetics/physiology ; Humans ; Influenza A Virus, H1N1 Subtype/classification/*growth & development ; Influenza, Human/*genetics/*virology ; Lung/cytology ; Mice ; Mice, Inbred C57BL ; Protein-Serine-Threonine Kinases/genetics ; Protein-Tyrosine Kinases/genetics ; *RNA Interference ; Virus Replication/*physiology
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    Secrets of the shaking palsy (2010)
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    Publication Date: 2010-08-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schnabel, Jim -- England -- Nature. 2010 Aug 26;466(7310):S2-5. doi: 10.1038/466S2b.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20739933" target="_blank"〉PubMed〈/a〉
    Keywords: Amyloid/metabolism ; Female ; Humans ; Male ; Mitochondria/pathology ; Neurons/*pathology ; Parkinson Disease/diagnosis/genetics/*pathology ; alpha-Synuclein/genetics/metabolism
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    Sister chromosome pairing maintains heterozygosity in parthenogenetic lizards (2010)
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    Publication Date: 2010-02-23
    Description: Although bisexual reproduction has proven to be highly successful, parthenogenetic all-female populations occur frequently in certain taxa, including the whiptail lizards of the genus Aspidoscelis. Allozyme analysis revealed a high degree of fixed heterozygosity in these parthenogenetic species, supporting the view that they originated from hybridization events between related sexual species. It has remained unclear how the meiotic program is altered to produce diploid eggs while maintaining heterozygosity. Here we show that meiosis commences with twice the number of chromosomes in parthenogenetic versus sexual species, a mechanism that provides the basis for generating gametes with unreduced chromosome content without fundamental deviation from the classic meiotic program. Our observation of synaptonemal complexes and chiasmata demonstrate that a typical meiotic program occurs and that heterozygosity is not maintained by bypassing recombination. Instead, fluorescent in situ hybridization probes that distinguish between homologues reveal that bivalents form between sister chromosomes, the genetically identical products of the first of two premeiotic replication cycles. Sister chromosome pairing provides a mechanism for the maintenance of heterozygosity, which is critical for offsetting the reduced fitness associated with the lack of genetic diversity in parthenogenetic species.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2840635/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2840635/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lutes, Aracely A -- Neaves, William B -- Baumann, Diana P -- Wiegraebe, Winfried -- Baumann, Peter -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Mar 11;464(7286):283-6. doi: 10.1038/nature08818. Epub 2010 Feb 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Stowers Institute for Medical Research, Kansas City, Missouri 64110, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20173738" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Pairing/*genetics ; Chromosomes/*genetics ; Crossing Over, Genetic/genetics ; Female ; *Heterozygote ; Lizards/*genetics ; Meiosis/genetics ; Microscopy, Electron, Transmission ; Oocytes/cytology/physiology/ultrastructure ; Telomere/genetics
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    Chemical genetics strategy identifies an HCV NS5A inhibitor with a potent clinical effect (2010)
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    Publication Date: 2010-04-23
    Description: The worldwide prevalence of chronic hepatitis C virus (HCV) infection is estimated to be approaching 200 million people. Current therapy relies upon a combination of pegylated interferon-alpha and ribavirin, a poorly tolerated regimen typically associated with less than 50% sustained virological response rate in those infected with genotype 1 virus. The development of direct-acting antiviral agents to treat HCV has focused predominantly on inhibitors of the viral enzymes NS3 protease and the RNA-dependent RNA polymerase NS5B. Here we describe the profile of BMS-790052, a small molecule inhibitor of the HCV NS5A protein that exhibits picomolar half-maximum effective concentrations (EC(50)) towards replicons expressing a broad range of HCV genotypes and the JFH-1 genotype 2a infectious virus in cell culture. In a phase I clinical trial in patients chronically infected with HCV, administration of a single 100-mg dose of BMS-790052 was associated with a 3.3 log(10) reduction in mean viral load measured 24 h post-dose that was sustained for an additional 120 h in two patients infected with genotype 1b virus. Genotypic analysis of samples taken at baseline, 24 and 144 h post-dose revealed that the major HCV variants observed had substitutions at amino-acid positions identified using the in vitro replicon system. These results provide the first clinical validation of an inhibitor of HCV NS5A, a protein with no known enzymatic function, as an approach to the suppression of virus replication that offers potential as part of a therapeutic regimen based on combinations of HCV inhibitors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gao, Min -- Nettles, Richard E -- Belema, Makonen -- Snyder, Lawrence B -- Nguyen, Van N -- Fridell, Robert A -- Serrano-Wu, Michael H -- Langley, David R -- Sun, Jin-Hua -- O'Boyle, Donald R 2nd -- Lemm, Julie A -- Wang, Chunfu -- Knipe, Jay O -- Chien, Caly -- Colonno, Richard J -- Grasela, Dennis M -- Meanwell, Nicholas A -- Hamann, Lawrence G -- England -- Nature. 2010 May 6;465(7294):96-100. doi: 10.1038/nature08960. Epub 2010 Apr 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Virology, Bristol-Myers Squibb Research and Development, 5 Research Parkway, Wallingford, Connecticut 06492, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20410884" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Animals ; Antiviral Agents/blood/chemistry/*pharmacology/therapeutic use ; Cell Line ; Cercopithecus aethiops ; Drug Resistance, Viral ; Female ; Genotype ; HeLa Cells ; Hepacivirus/*drug effects ; Hepatitis C/drug therapy/virology ; Humans ; Imidazoles/blood/chemistry/*pharmacology ; Inhibitory Concentration 50 ; Male ; Middle Aged ; Time Factors ; Vero Cells ; Viral Load/drug effects ; Viral Nonstructural Proteins/*antagonists & inhibitors ; Young Adult
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    Evolutionary biology: Oh sibling, who art thou? (2010)
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    Publication Date: 2010-08-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cockburn, Andrew -- England -- Nature. 2010 Aug 19;466(7309):930-1. doi: 10.1038/466930a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20725030" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Birds/classification/genetics/*physiology ; *Cooperative Behavior ; Fathers ; Female ; Male ; Models, Biological ; Mothers ; Phylogeny ; Reproduction/genetics/physiology ; Sexual Behavior, Animal/*physiology ; *Siblings
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    Long shadow of the stem-cell ruling (2010)
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    Publication Date: 2010-10-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉England -- Nature. 2010 Oct 28;467(7319):1031-3. doi: 10.1038/4671031a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20981069" target="_blank"〉PubMed〈/a〉
    Keywords: *Embryonic Stem Cells ; Female ; HeLa Cells ; Humans ; *Policy Making ; Politics ; Public Policy/legislation & jurisprudence/trends ; Research Personnel/economics/ethics/psychology ; Stem Cell Research/*economics/ethics/*legislation & jurisprudence ; United States
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    Stem cells: Cues from steroid hormones (2010)
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    Publication Date: 2010-06-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lydon, John P -- England -- Nature. 2010 Jun 10;465(7299):695-6. doi: 10.1038/465695a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20535190" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Breast Neoplasms/pathology ; Cell Division ; Estrogens/*metabolism ; Estrous Cycle/physiology ; Female ; Humans ; Lactation/physiology ; Mammary Glands, Animal/*cytology ; Mice ; Paracrine Communication ; Pregnancy ; Pregnancy, Animal/physiology ; Progesterone/*metabolism ; RANK Ligand/metabolism ; Receptors, Estrogen/deficiency ; Receptors, Progesterone/deficiency ; Stem Cell Niche/cytology/metabolism ; Stem Cells/*cytology/drug effects/*metabolism
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    Higher rates of sex evolve in spatially heterogeneous environments (2010)
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    Publication Date: 2010-10-15
    Description: The evolution and maintenance of sexual reproduction has puzzled biologists for decades. Although this field is rich in hypotheses, experimental evidence is scarce. Some important experiments have demonstrated differences in evolutionary rates between sexual and asexual populations; other experiments have documented evolutionary changes in phenomena related to genetic mixing, such as recombination and selfing. However, direct experiments of the evolution of sex within populations are extremely rare (but see ref. 12). Here we use the rotifer, Brachionus calyciflorus, which is capable of both sexual and asexual reproduction, to test recent theory predicting that there is more opportunity for sex to evolve in spatially heterogeneous environments. Replicated experimental populations of rotifers were maintained in homogeneous environments, composed of either high- or low-quality food habitats, or in heterogeneous environments that consisted of a mix of the two habitats. For populations maintained in either type of homogeneous environment, the rate of sex evolves rapidly towards zero. In contrast, higher rates of sex evolve in populations experiencing spatially heterogeneous environments. The data indicate that the higher level of sex observed under heterogeneity is not due to sex being less costly or selection against sex being less efficient; rather sex is sufficiently advantageous in heterogeneous environments to overwhelm its inherent costs. Counter to some alternative theories for the evolution of sex, there is no evidence that genetic drift plays any part in the evolution of sex in these populations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Becks, Lutz -- Agrawal, Aneil F -- England -- Nature. 2010 Nov 4;468(7320):89-92. doi: 10.1038/nature09449. Epub 2010 Oct 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology & Evolutionary Biology, University of Toronto, Toronto, Ontario M5S 3B2, Canada. lutz.becks@utoronto.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20944628" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Migration/physiology ; Animals ; *Biological Evolution ; Diet/veterinary ; *Ecosystem ; Female ; *Food ; Genetic Drift ; Male ; Meiosis/genetics ; Models, Biological ; Ovum/physiology ; Population Density ; Reproduction/physiology ; Reproduction, Asexual/physiology ; Rotifera/cytology/genetics/*physiology ; Selection, Genetic ; *Sex
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    Epigenetic silencing of engineered L1 retrotransposition events in human embryonic carcinoma cells (2010)
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    Publication Date: 2010-08-06
    Description: Long interspersed element-1 (LINE-1 or L1) retrotransposition continues to affect human genome evolution. L1s can retrotranspose in the germline, during early development and in select somatic cells; however, the host response to L1 retrotransposition remains largely unexplored. Here we show that reporter genes introduced into the genome of various human embryonic carcinoma-derived cell lines (ECs) by L1 retrotransposition are rapidly and efficiently silenced either during or immediately after their integration. Treating ECs with histone deacetylase inhibitors rapidly reverses this silencing, and chromatin immunoprecipitation experiments revealed that reactivation of the reporter gene was correlated with changes in chromatin status at the L1 integration site. Under our assay conditions, rapid silencing was also observed when reporter genes were delivered into ECs by mouse L1s and a zebrafish LINE-2 element, but not when similar reporter genes were delivered into ECs by Moloney murine leukaemia virus or human immunodeficiency virus, suggesting that these integration events are silenced by distinct mechanisms. Finally, we demonstrate that subjecting ECs to culture conditions that promote differentiation attenuates the silencing of reporter genes delivered by L1 retrotransposition, but that differentiation, in itself, is not sufficient to reactivate previously silenced reporter genes. Thus, our data indicate that ECs differ from many differentiated cells in their ability to silence reporter genes delivered by L1 retrotransposition.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3034402/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3034402/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Garcia-Perez, Jose L -- Morell, Maria -- Scheys, Joshua O -- Kulpa, Deanna A -- Morell, Santiago -- Carter, Christoph C -- Hammer, Gary D -- Collins, Kathleen L -- O'Shea, K Sue -- Menendez, Pablo -- Moran, John V -- 5 P30 CA46592/CA/NCI NIH HHS/ -- GM-069985/GM/NIGMS NIH HHS/ -- GM060518/GM/NIGMS NIH HHS/ -- GM082970/GM/NIGMS NIH HHS/ -- NS-048187/NS/NINDS NIH HHS/ -- R01 DK62027/DK/NIDDK NIH HHS/ -- R01 GM060518/GM/NIGMS NIH HHS/ -- R01 GM060518-12/GM/NIGMS NIH HHS/ -- R01 GM082970/GM/NIGMS NIH HHS/ -- R01 GM082970-04/GM/NIGMS NIH HHS/ -- R01AI051198/AI/NIAID NIH HHS/ -- T32-GM08322/GM/NIGMS NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Aug 5;466(7307):769-73. doi: 10.1038/nature09209.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Genetics, 1241 East Catherine Street, University of Michigan Medical School, Ann Arbor, Michigan 48109-5618, USA. josel.garcia.perez@juntadeandalucia.es〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20686575" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation/genetics/physiology ; Cell Line, Tumor ; Chromatin/drug effects/genetics/metabolism ; Chromatin Immunoprecipitation ; Embryonal Carcinoma Stem Cells/*metabolism/pathology ; Epigenesis, Genetic/drug effects/*genetics ; Female ; Gene Expression Regulation, Neoplastic/drug effects ; *Gene Silencing/drug effects ; Genes, Reporter/genetics ; Genetic Engineering ; Genetic Vectors/genetics ; Genome, Human/genetics ; HIV/genetics ; Histone Deacetylase Inhibitors/pharmacology ; Humans ; Long Interspersed Nucleotide Elements/genetics ; Male ; Mice ; Models, Genetic ; Moloney murine leukemia virus/genetics ; Retroelements/*genetics ; Zebrafish/genetics
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    Osteoclast differentiation factor RANKL controls development of progestin-driven mammary cancer (2010)
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    Publication Date: 2010-10-01
    Description: Breast cancer is one of the most common cancers in humans and will on average affect up to one in eight women in their lifetime in the United States and Europe. The Women's Health Initiative and the Million Women Study have shown that hormone replacement therapy is associated with an increased risk of incident and fatal breast cancer. In particular, synthetic progesterone derivatives (progestins) such as medroxyprogesterone acetate (MPA), used in millions of women for hormone replacement therapy and contraceptives, markedly increase the risk of developing breast cancer. Here we show that the in vivo administration of MPA triggers massive induction of the key osteoclast differentiation factor RANKL (receptor activator of NF-kappaB ligand) in mammary-gland epithelial cells. Genetic inactivation of the RANKL receptor RANK in mammary-gland epithelial cells prevents MPA-induced epithelial proliferation, impairs expansion of the CD49f(hi) stem-cell-enriched population, and sensitizes these cells to DNA-damage-induced cell death. Deletion of RANK from the mammary epithelium results in a markedly decreased incidence and delayed onset of MPA-driven mammary cancer. These data show that the RANKL/RANK system controls the incidence and onset of progestin-driven breast cancer.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3084017/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3084017/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schramek, Daniel -- Leibbrandt, Andreas -- Sigl, Verena -- Kenner, Lukas -- Pospisilik, John A -- Lee, Heather J -- Hanada, Reiko -- Joshi, Purna A -- Aliprantis, Antonios -- Glimcher, Laurie -- Pasparakis, Manolis -- Khokha, Rama -- Ormandy, Christopher J -- Widschwendter, Martin -- Schett, Georg -- Penninger, Josef M -- HD055601/HD/NICHD NIH HHS/ -- R01 HD055601/HD/NICHD NIH HHS/ -- R01 HD055601-04/HD/NICHD NIH HHS/ -- England -- Nature. 2010 Nov 4;468(7320):98-102. doi: 10.1038/nature09387. Epub 2010 Sep 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉IMBA, Institute of Molecular Biotechnology of the Austrian Academy of Sciences, 1030 Vienna, Austria.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20881962" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis/radiation effects ; Cell Differentiation ; Cell Proliferation/drug effects ; DNA Damage ; Epithelial Cells/cytology/drug effects/metabolism/radiation effects ; Female ; Gamma Rays ; Integrin alpha6/metabolism ; Mammary Neoplasms, Experimental/*chemically ; induced/genetics/metabolism/*pathology ; Medroxyprogesterone Acetate/administration & dosage/adverse effects ; Mice ; NF-kappa B/metabolism ; Osteoclasts/cytology ; Phosphoproteins/analysis/immunology ; Progestins/administration & dosage/*adverse effects ; RANK Ligand/deficiency/genetics/*metabolism ; Receptor Activator of Nuclear Factor-kappa B/deficiency/genetics/metabolism ; Signal Transduction ; Stem Cells/cytology/drug effects/metabolism
    Print ISSN: 0028-0836
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    RANK ligand mediates progestin-induced mammary epithelial proliferation and carcinogenesis (2010)
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    Publication Date: 2010-10-01
    Description: RANK ligand (RANKL), a TNF-related molecule, is essential for osteoclast formation, function and survival through interaction with its receptor RANK. Mammary glands of RANK- and RANKL-deficient mice develop normally during sexual maturation, but fail to form lobuloalveolar structures during pregnancy because of defective proliferation and increased apoptosis of mammary epithelium. It has been shown that RANKL is responsible for the major proliferative response of mouse mammary epithelium to progesterone during mammary lactational morphogenesis, and in mouse models, manipulated to induce activation of the RANK/RANKL pathway in the absence of strict hormonal control, inappropriate mammary proliferation is observed. However, there is no evidence so far of a functional contribution of RANKL to tumorigenesis. Here we show that RANK and RANKL are expressed within normal, pre-malignant and neoplastic mammary epithelium, and using complementary gain-of-function (mouse mammary tumour virus (MMTV)-RANK transgenic mice) and loss-of function (pharmacological inhibition of RANKL) approaches, define a direct contribution of this pathway in mammary tumorigenesis. Accelerated pre-neoplasias and increased mammary tumour formation were observed in MMTV-RANK transgenic mice after multiparity or treatment with carcinogen and hormone (progesterone). Reciprocally, selective pharmacological inhibition of RANKL attenuated mammary tumour development not only in hormone- and carcinogen-treated MMTV-RANK and wild-type mice, but also in the MMTV-neu transgenic spontaneous tumour model. The reduction in tumorigenesis upon RANKL inhibition was preceded by a reduction in pre-neoplasias as well as rapid and sustained reductions in hormone- and carcinogen-induced mammary epithelial proliferation and cyclin D1 levels. Collectively, our results indicate that RANKL inhibition is acting directly on hormone-induced mammary epithelium at early stages in tumorigenesis, and the permissive contribution of progesterone to increased mammary cancer incidence is due to RANKL-dependent proliferative changes in the mammary epithelium. The current study highlights a potential role for RANKL inhibition in the management of proliferative breast disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gonzalez-Suarez, Eva -- Jacob, Allison P -- Jones, Jon -- Miller, Robert -- Roudier-Meyer, Martine P -- Erwert, Ryan -- Pinkas, Jan -- Branstetter, Dan -- Dougall, William C -- England -- Nature. 2010 Nov 4;468(7320):103-7. doi: 10.1038/nature09495. Epub 2010 Sep 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Hematology/Oncology Research, Amgen Inc, Seattle, Washington 98119, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20881963" target="_blank"〉PubMed〈/a〉
    Keywords: 9,10-Dimethyl-1,2-benzanthracene/administration & dosage/adverse effects ; Animals ; Breast Neoplasms/metabolism/pathology ; Cell Proliferation/drug effects ; Cell Transformation, Neoplastic/*chemically induced/*drug effects/pathology ; Disease Models, Animal ; Epithelial Cells/drug effects/metabolism/pathology ; Female ; Humans ; Lung Neoplasms/secondary ; Mammary Neoplasms, Experimental/*chemically ; induced/genetics/metabolism/*pathology ; Mammary Tumor Virus, Mouse/genetics/physiology ; Medroxyprogesterone Acetate/administration & dosage/adverse effects ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Neoplasm Invasiveness ; Precancerous Conditions/pathology/prevention & control ; Progesterone/administration & dosage/adverse effects ; Progestins/administration & dosage/*adverse effects ; RANK Ligand/antagonists & inhibitors/genetics/*metabolism ; Receptor Activator of Nuclear Factor-kappa B/genetics/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    A population-specific HTR2B stop codon predisposes to severe impulsivity (2010)
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    Publication Date: 2010-12-24
    Description: Impulsivity, describing action without foresight, is an important feature of several psychiatric diseases, suicidality and violent behaviour. The complex origins of impulsivity hinder identification of the genes influencing it and the diseases with which it is associated. Here we perform exon-focused sequencing of impulsive individuals in a founder population, targeting fourteen genes belonging to the serotonin and dopamine domain. A stop codon in HTR2B was identified that is common (minor allele frequency 〉 1%) but exclusive to Finnish people. Expression of the gene in the human brain was assessed, as well as the molecular functionality of the stop codon, which was associated with psychiatric diseases marked by impulsivity in both population and family-based analyses. Knockout of Htr2b increased impulsive behaviours in mice, indicative of predictive validity. Our study shows the potential for identifying and tracing effects of rare alleles in complex behavioural phenotypes using founder populations, and indicates a role for HTR2B in impulsivity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3183507/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3183507/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bevilacqua, Laura -- Doly, Stephane -- Kaprio, Jaakko -- Yuan, Qiaoping -- Tikkanen, Roope -- Paunio, Tiina -- Zhou, Zhifeng -- Wedenoja, Juho -- Maroteaux, Luc -- Diaz, Silvina -- Belmer, Arnaud -- Hodgkinson, Colin A -- Dell'osso, Liliana -- Suvisaari, Jaana -- Coccaro, Emil -- Rose, Richard J -- Peltonen, Leena -- Virkkunen, Matti -- Goldman, David -- AA-09203/AA/NIAAA NIH HHS/ -- AA-12502/AA/NIAAA NIH HHS/ -- Z01 AA000301-09/Intramural NIH HHS/ -- Z01 AA000301-10/Intramural NIH HHS/ -- Z99 AA999999/Intramural NIH HHS/ -- England -- Nature. 2010 Dec 23;468(7327):1061-6. doi: 10.1038/nature09629.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, NIH, Rockville, Maryland 20852, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21179162" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/metabolism ; Case-Control Studies ; Cell Line ; Female ; Finland ; Founder Effect ; Gene Expression Regulation ; Gene Knockout Techniques ; Genotype ; Humans ; Impulsive Behavior/*genetics ; Male ; Mental Disorders/genetics ; Mice ; Mice, 129 Strain ; Mice, Knockout ; Pedigree ; Polymorphism, Single Nucleotide/genetics ; Receptor, Serotonin, 5-HT2B/*genetics/*metabolism ; Testosterone/blood/cerebrospinal fluid
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    Bone progenitor dysfunction induces myelodysplasia and secondary leukaemia (2010)
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    Publication Date: 2010-03-23
    Description: Mesenchymal cells contribute to the 'stroma' of most normal and malignant tissues, with specific mesenchymal cells participating in the regulatory niches of stem cells. By examining how mesenchymal osteolineage cells modulate haematopoiesis, here we show that deletion of Dicer1 specifically in mouse osteoprogenitors, but not in mature osteoblasts, disrupts the integrity of haematopoiesis. Myelodysplasia resulted and acute myelogenous leukaemia emerged that had acquired several genetic abnormalities while having intact Dicer1. Examining gene expression altered in osteoprogenitors as a result of Dicer1 deletion showed reduced expression of Sbds, the gene mutated in Schwachman-Bodian-Diamond syndrome-a human bone marrow failure and leukaemia pre-disposition condition. Deletion of Sbds in mouse osteoprogenitors induced bone marrow dysfunction with myelodysplasia. Therefore, perturbation of specific mesenchymal subsets of stromal cells can disorder differentiation, proliferation and apoptosis of heterologous cells, and disrupt tissue homeostasis. Furthermore, primary stromal dysfunction can result in secondary neoplastic disease, supporting the concept of niche-induced oncogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3422863/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3422863/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Raaijmakers, Marc H G P -- Mukherjee, Siddhartha -- Guo, Shangqin -- Zhang, Siyi -- Kobayashi, Tatsuya -- Schoonmaker, Jesse A -- Ebert, Benjamin L -- Al-Shahrour, Fatima -- Hasserjian, Robert P -- Scadden, Edward O -- Aung, Zinmar -- Matza, Marc -- Merkenschlager, Matthias -- Lin, Charles -- Rommens, Johanna M -- Scadden, David T -- MC_U120027516/Medical Research Council/United Kingdom -- R01 DK050234/DK/NIDDK NIH HHS/ -- R01 HL044851/HL/NHLBI NIH HHS/ -- R01 HL097794/HL/NHLBI NIH HHS/ -- U01 HL100402/HL/NHLBI NIH HHS/ -- U54 HL081030/HL/NHLBI NIH HHS/ -- England -- Nature. 2010 Apr 8;464(7290):852-7. doi: 10.1038/nature08851. Epub 2010 Mar 21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Regenerative Medicine, Massachusetts General Hospital and Harvard Medical School CPZN, USA. hraaijmakers@partners.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20305640" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Marrow/metabolism/pathology ; Bone and Bones/metabolism/*pathology ; Cell Differentiation ; Cell Lineage ; Female ; Gene Deletion ; Hematopoiesis/genetics ; Leukemia, Myeloid, Acute/genetics/metabolism/*pathology ; Male ; Mesoderm/cytology ; Mice ; Myelodysplastic Syndromes/genetics/metabolism/*pathology ; Osteoblasts/metabolism/pathology ; Phenotype ; Proteins/genetics/metabolism ; Ribonuclease III/deficiency/genetics/metabolism ; Sarcoma, Myeloid/genetics/metabolism/pathology ; Stem Cell Niche/metabolism/pathology ; Stem Cells/metabolism/*pathology ; Stromal Cells/metabolism/pathology
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    Oxidative stress induces angiogenesis by activating TLR2 with novel endogenous ligands (2010)
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    Publication Date: 2010-10-12
    Description: Reciprocity of inflammation, oxidative stress and neovascularization is emerging as an important mechanism underlying numerous processes from tissue healing and remodelling to cancer progression. Whereas the mechanism of hypoxia-driven angiogenesis is well understood, the link between inflammation-induced oxidation and de novo blood vessel growth remains obscure. Here we show that the end products of lipid oxidation, omega-(2-carboxyethyl)pyrrole (CEP) and other related pyrroles, are generated during inflammation and wound healing and accumulate at high levels in ageing tissues in mice and in highly vascularized tumours in both murine and human melanoma. The molecular patterns of carboxyalkylpyrroles are recognized by Toll-like receptor 2 (TLR2), but not TLR4 or scavenger receptors on endothelial cells, leading to an angiogenic response that is independent of vascular endothelial growth factor. CEP promoted angiogenesis in hindlimb ischaemia and wound healing models through MyD88-dependent TLR2 signalling. Neutralization of endogenous carboxyalkylpyrroles impaired wound healing and tissue revascularization and diminished tumour angiogenesis. Both TLR2 and MyD88 are required for CEP-induced stimulation of Rac1 and endothelial migration. Taken together, these findings establish a new function of TLR2 as a sensor of oxidation-associated molecular patterns, providing a key link connecting inflammation, oxidative stress, innate immunity and angiogenesis.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2990914/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2990914/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉West, Xiaoxia Z -- Malinin, Nikolay L -- Merkulova, Alona A -- Tischenko, Mira -- Kerr, Bethany A -- Borden, Ernest C -- Podrez, Eugene A -- Salomon, Robert G -- Byzova, Tatiana V -- CA126847/CA/NCI NIH HHS/ -- GM021249/GM/NIGMS NIH HHS/ -- HL071625/HL/NHLBI NIH HHS/ -- HL073311/HL/NHLBI NIH HHS/ -- HL077213/HL/NHLBI NIH HHS/ -- R01 HL071625/HL/NHLBI NIH HHS/ -- R01 HL071625-07/HL/NHLBI NIH HHS/ -- R01 HL071625-08/HL/NHLBI NIH HHS/ -- R01 HL077213/HL/NHLBI NIH HHS/ -- England -- Nature. 2010 Oct 21;467(7318):972-6. doi: 10.1038/nature09421. Epub 2010 Oct 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Cardiology, J. J. Jacobs Center for Thrombosis and Vascular Biology, NB50, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, Ohio 44195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20927103" target="_blank"〉PubMed〈/a〉
    Keywords: Aging/metabolism ; Animals ; Antigens, CD31/metabolism ; Aorta/cytology/drug effects ; Cell Line ; Cell Movement ; Endothelial Cells/metabolism ; Hindlimb/metabolism ; Humans ; Immunity, Innate/immunology ; Inflammation/metabolism ; Ischemia/metabolism ; Ligands ; Melanoma/blood supply/metabolism ; Mice ; Mice, Inbred C57BL ; Myeloid Differentiation Factor 88/metabolism ; Neovascularization, Pathologic/*metabolism ; *Neovascularization, Physiologic/drug effects ; Oxidation-Reduction ; Oxidative Stress/*physiology ; Propionates ; Pyrroles/chemistry/*metabolism/pharmacology ; Receptors, Scavenger/metabolism ; Signal Transduction/drug effects ; Toll-Like Receptor 2/agonists/*metabolism ; Toll-Like Receptor 4/metabolism ; Vascular Endothelial Growth Factor A/metabolism ; Wound Healing/drug effects/physiology ; rac1 GTP-Binding Protein/metabolism
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    The evolution of eusociality (2010)
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    Publication Date: 2010-08-27
    Description: Eusociality, in which some individuals reduce their own lifetime reproductive potential to raise the offspring of others, underlies the most advanced forms of social organization and the ecologically dominant role of social insects and humans. For the past four decades kin selection theory, based on the concept of inclusive fitness, has been the major theoretical attempt to explain the evolution of eusociality. Here we show the limitations of this approach. We argue that standard natural selection theory in the context of precise models of population structure represents a simpler and superior approach, allows the evaluation of multiple competing hypotheses, and provides an exact framework for interpreting empirical observations.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3279739/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3279739/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nowak, Martin A -- Tarnita, Corina E -- Wilson, Edward O -- R01 GM078986/GM/NIGMS NIH HHS/ -- R01 GM078986-04/GM/NIGMS NIH HHS/ -- R01GM078986/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Aug 26;466(7310):1057-62. doi: 10.1038/nature09205.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program for Evolutionary Dynamics, Department of Mathematics, Harvard University, Cambridge, Massachusetts 02138, USA. martin_nowak@harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20740005" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Behavior, Animal/*physiology ; *Biological Evolution ; Female ; Humans ; Insects/physiology ; Male ; Models, Biological ; Selection, Genetic ; *Social Behavior
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    A redox switch in angiotensinogen modulates angiotensin release (2010)
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    Publication Date: 2010-10-12
    Description: Blood pressure is critically controlled by angiotensins, which are vasopressor peptides specifically released by the enzyme renin from the tail of angiotensinogen-a non-inhibitory member of the serpin family of protease inhibitors. Although angiotensinogen has long been regarded as a passive substrate, the crystal structures solved here to 2.1 A resolution show that the angiotensin cleavage site is inaccessibly buried in its amino-terminal tail. The conformational rearrangement that makes this site accessible for proteolysis is revealed in our 4.4 A structure of the complex of human angiotensinogen with renin. The co-ordinated changes involved are seen to be critically linked by a conserved but labile disulphide bridge. Here we show that the reduced unbridged form of angiotensinogen is present in the circulation in a near 40:60 ratio with the oxidized sulphydryl-bridged form, which preferentially interacts with receptor-bound renin. We propose that this redox-responsive transition of angiotensinogen to a form that will more effectively release angiotensin at a cellular level contributes to the modulation of blood pressure. Specifically, we demonstrate the oxidative switch of angiotensinogen to its more active sulphydryl-bridged form in the maternal circulation in pre-eclampsia-the hypertensive crisis of pregnancy that threatens the health and survival of both mother and child.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3024006/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3024006/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zhou, Aiwu -- Carrell, Robin W -- Murphy, Michael P -- Wei, Zhenquan -- Yan, Yahui -- Stanley, Peter L D -- Stein, Penelope E -- Broughton Pipkin, Fiona -- Read, Randy J -- 082961/Wellcome Trust/United Kingdom -- BS/05/002/18361/British Heart Foundation/United Kingdom -- MC_U105663142/Medical Research Council/United Kingdom -- PG/08/041/24818/British Heart Foundation/United Kingdom -- PG/09/072/27945/British Heart Foundation/United Kingdom -- British Heart Foundation/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2010 Nov 4;468(7320):108-11. doi: 10.1038/nature09505. Epub 2010 Oct 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Haematology, Cambridge Institute for Medical Research, University of Cambridge, Hills Road, Cambridge CB2 0XY, UK. awz20@cam.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20927107" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Angiotensinogen/blood/*chemistry/*metabolism ; Angiotensins/chemistry/*metabolism/secretion ; Blood Pressure ; Crystallography, X-Ray ; Disulfides/chemistry/metabolism ; Female ; Humans ; Kinetics ; Models, Molecular ; Molecular Sequence Data ; Oxidation-Reduction ; Oxidative Stress ; Pre-Eclampsia/blood/metabolism ; Pregnancy ; Protein Conformation ; *Protein Processing, Post-Translational ; Renin/chemistry/metabolism
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    The sequence and de novo assembly of the giant panda genome (2009)
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    Publication Date: 2009-12-17
    Description: Using next-generation sequencing technology alone, we have successfully generated and assembled a draft sequence of the giant panda genome. The assembled contigs (2.25 gigabases (Gb)) cover approximately 94% of the whole genome, and the remaining gaps (0.05 Gb) seem to contain carnivore-specific repeats and tandem repeats. Comparisons with the dog and human showed that the panda genome has a lower divergence rate. The assessment of panda genes potentially underlying some of its unique traits indicated that its bamboo diet might be more dependent on its gut microbiome than its own genetic composition. We also identified more than 2.7 million heterozygous single nucleotide polymorphisms in the diploid genome. Our data and analyses provide a foundation for promoting mammalian genetic research, and demonstrate the feasibility for using next-generation sequencing technologies for accurate, cost-effective and rapid de novo assembly of large eukaryotic genomes.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3951497/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3951497/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Li, Ruiqiang -- Fan, Wei -- Tian, Geng -- Zhu, Hongmei -- He, Lin -- Cai, Jing -- Huang, Quanfei -- Cai, Qingle -- Li, Bo -- Bai, Yinqi -- Zhang, Zhihe -- Zhang, Yaping -- Wang, Wen -- Li, Jun -- Wei, Fuwen -- Li, Heng -- Jian, Min -- Li, Jianwen -- Zhang, Zhaolei -- Nielsen, Rasmus -- Li, Dawei -- Gu, Wanjun -- Yang, Zhentao -- Xuan, Zhaoling -- Ryder, Oliver A -- Leung, Frederick Chi-Ching -- Zhou, Yan -- Cao, Jianjun -- Sun, Xiao -- Fu, Yonggui -- Fang, Xiaodong -- Guo, Xiaosen -- Wang, Bo -- Hou, Rong -- Shen, Fujun -- Mu, Bo -- Ni, Peixiang -- Lin, Runmao -- Qian, Wubin -- Wang, Guodong -- Yu, Chang -- Nie, Wenhui -- Wang, Jinhuan -- Wu, Zhigang -- Liang, Huiqing -- Min, Jiumeng -- Wu, Qi -- Cheng, Shifeng -- Ruan, Jue -- Wang, Mingwei -- Shi, Zhongbin -- Wen, Ming -- Liu, Binghang -- Ren, Xiaoli -- Zheng, Huisong -- Dong, Dong -- Cook, Kathleen -- Shan, Gao -- Zhang, Hao -- Kosiol, Carolin -- Xie, Xueying -- Lu, Zuhong -- Zheng, Hancheng -- Li, Yingrui -- Steiner, Cynthia C -- Lam, Tommy Tsan-Yuk -- Lin, Siyuan -- Zhang, Qinghui -- Li, Guoqing -- Tian, Jing -- Gong, Timing -- Liu, Hongde -- Zhang, Dejin -- Fang, Lin -- Ye, Chen -- Zhang, Juanbin -- Hu, Wenbo -- Xu, Anlong -- Ren, Yuanyuan -- Zhang, Guojie -- Bruford, Michael W -- Li, Qibin -- Ma, Lijia -- Guo, Yiran -- An, Na -- Hu, Yujie -- Zheng, Yang -- Shi, Yongyong -- Li, Zhiqiang -- Liu, Qing -- Chen, Yanling -- Zhao, Jing -- Qu, Ning -- Zhao, Shancen -- Tian, Feng -- Wang, Xiaoling -- Wang, Haiyin -- Xu, Lizhi -- Liu, Xiao -- Vinar, Tomas -- Wang, Yajun -- Lam, Tak-Wah -- Yiu, Siu-Ming -- Liu, Shiping -- Zhang, Hemin -- Li, Desheng -- Huang, Yan -- Wang, Xia -- Yang, Guohua -- Jiang, Zhi -- Wang, Junyi -- Qin, Nan -- Li, Li -- Li, Jingxiang -- Bolund, Lars -- Kristiansen, Karsten -- Wong, Gane Ka-Shu -- Olson, Maynard -- Zhang, Xiuqing -- Li, Songgang -- Yang, Huanming -- Wang, Jian -- Wang, Jun -- R01 HG003229/HG/NHGRI NIH HHS/ -- R01 HG003229-05/HG/NHGRI NIH HHS/ -- England -- Nature. 2010 Jan 21;463(7279):311-7. doi: 10.1038/nature08696. Epub 2009 Dec 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉BGI-Shenzhen, Shenzhen 518083, China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20010809" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Animals ; China ; Conserved Sequence/genetics ; Contig Mapping ; Diet/veterinary ; Dogs ; Evolution, Molecular ; Female ; Fertility/genetics/physiology ; Genome/*genetics ; *Genomics ; Heterozygote ; Humans ; Multigene Family/genetics ; Polymorphism, Single Nucleotide/genetics ; Receptors, G-Protein-Coupled/genetics ; Sequence Alignment ; Sequence Analysis, DNA ; Synteny/genetics ; Ursidae/classification/*genetics/physiology
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    Structural basis of semaphorin-plexin signalling (2010)
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    Publication Date: 2010-09-30
    Description: Cell-cell signalling of semaphorin ligands through interaction with plexin receptors is important for the homeostasis and morphogenesis of many tissues and is widely studied for its role in neural connectivity, cancer, cell migration and immune responses. SEMA4D and Sema6A exemplify two diverse vertebrate, membrane-spanning semaphorin classes (4 and 6) that are capable of direct signalling through members of the two largest plexin classes, B and A, respectively. In the absence of any structural information on the plexin ectodomain or its interaction with semaphorins the extracellular specificity and mechanism controlling plexin signalling has remained unresolved. Here we present crystal structures of cognate complexes of the semaphorin-binding regions of plexins B1 and A2 with semaphorin ectodomains (human PLXNB1(1-2)-SEMA4D(ecto) and murine PlxnA2(1-4)-Sema6A(ecto)), plus unliganded structures of PlxnA2(1-4) and Sema6A(ecto). These structures, together with biophysical and cellular assays of wild-type and mutant proteins, reveal that semaphorin dimers independently bind two plexin molecules and that signalling is critically dependent on the avidity of the resulting bivalent 2:2 complex (monomeric semaphorin binds plexin but fails to trigger signalling). In combination, our data favour a cell-cell signalling mechanism involving semaphorin-stabilized plexin dimerization, possibly followed by clustering, which is consistent with previous functional data. Furthermore, the shared generic architecture of the complexes, formed through conserved contacts of the amino-terminal seven-bladed beta-propeller (sema) domains of both semaphorin and plexin, suggests that a common mode of interaction triggers all semaphorin-plexin based signalling, while distinct insertions within or between blades of the sema domains determine binding specificity.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3587840/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3587840/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Janssen, Bert J C -- Robinson, Ross A -- Perez-Branguli, Francesc -- Bell, Christian H -- Mitchell, Kevin J -- Siebold, Christian -- Jones, E Yvonne -- 082301/Wellcome Trust/United Kingdom -- 083111/Wellcome Trust/United Kingdom -- 10976/Cancer Research UK/United Kingdom -- A10976/Cancer Research UK/United Kingdom -- A3964/Cancer Research UK/United Kingdom -- A5261/Cancer Research UK/United Kingdom -- G0700232/Medical Research Council/United Kingdom -- G0700232(82098)/Medical Research Council/United Kingdom -- G0900084/Medical Research Council/United Kingdom -- G9900061/Medical Research Council/United Kingdom -- G9900061(69203)/Medical Research Council/United Kingdom -- Cancer Research UK/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2010 Oct 28;467(7319):1118-22. doi: 10.1038/nature09468. Epub 2010 Sep 26.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20877282" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/chemistry/genetics/metabolism ; Binding Sites ; Cell Adhesion Molecules/*chemistry/genetics/*metabolism ; Cell Communication ; Crystallography, X-Ray ; Humans ; Ligands ; Mice ; Mice, Inbred C57BL ; Models, Molecular ; NIH 3T3 Cells ; Nerve Tissue Proteins/*chemistry/genetics/*metabolism ; Protein Binding ; Protein Structure, Tertiary ; Receptors, Cell Surface/chemistry/genetics/metabolism ; Semaphorins/*chemistry/genetics/*metabolism ; *Signal Transduction ; Structure-Activity Relationship
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    CD95 promotes tumour growth (2010)
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    Publication Date: 2010-05-28
    Description: CD95 (also called Fas and APO-1) is a prototypical death receptor that regulates tissue homeostasis mainly in the immune system through the induction of apoptosis. During cancer progression CD95 is frequently downregulated or cells are rendered apoptosis resistant, raising the possibility that loss of CD95 is part of a mechanism for tumour evasion. However, complete loss of CD95 is rarely seen in human cancers and many cancer cells express large quantities of CD95 and are highly sensitive to CD95-mediated apoptosis in vitro. Furthermore, cancer patients frequently have elevated levels of the physiological ligand for CD95, CD95L. These data raise the possibility that CD95 could actually promote the growth of tumours through its non-apoptotic activities. Here we show that cancer cells in general, regardless of their CD95 apoptosis sensitivity, depend on constitutive activity of CD95, stimulated by cancer-produced CD95L, for optimal growth. Consistently, loss of CD95 in mouse models of ovarian cancer and liver cancer reduces cancer incidence as well as the size of the tumours. The tumorigenic activity of CD95 is mediated by a pathway involving JNK and Jun. These results demonstrate that CD95 has a growth-promoting role during tumorigenesis and indicate that efforts to inhibit its activity rather than to enhance it should be considered during cancer therapy.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2879093/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2879093/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Lina -- Park, Sun-Mi -- Tumanov, Alexei V -- Hau, Annika -- Sawada, Kenjiro -- Feig, Christine -- Turner, Jerrold R -- Fu, Yang-Xin -- Romero, Iris L -- Lengyel, Ernst -- Peter, Marcus E -- CA112240/CA/NCI NIH HHS/ -- K12 HD000849/HD/NICHD NIH HHS/ -- L30 CA153336/CA/NCI NIH HHS/ -- R01 CA095319/CA/NCI NIH HHS/ -- R01 CA11182/CA/NCI NIH HHS/ -- R01 CA112240/CA/NCI NIH HHS/ -- R01 CA112240-01A1/CA/NCI NIH HHS/ -- R01 CA112240-02/CA/NCI NIH HHS/ -- R01 CA112240-03/CA/NCI NIH HHS/ -- R01 CA112240-04/CA/NCI NIH HHS/ -- R01 CA112240-05/CA/NCI NIH HHS/ -- England -- Nature. 2010 May 27;465(7297):492-6. doi: 10.1038/nature09075.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Ben May Department for Cancer Research, The University of Chicago, 924 E 57th Street, Chicago, Illinois 60637, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20505730" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD95/deficiency/genetics/*metabolism ; Apoptosis ; Carcinoma, Endometrioid/metabolism/pathology ; Cell Line, Tumor ; Cell Proliferation ; Fas Ligand Protein/antagonists & inhibitors/immunology/metabolism ; Female ; Gene Expression Regulation, Neoplastic ; Hepatocytes/enzymology/metabolism/pathology ; Humans ; Liver Neoplasms/enzymology/metabolism/pathology ; Male ; Mice ; Mitogen-Activated Protein Kinase 8/deficiency/genetics/metabolism ; Neoplasms/*metabolism/*pathology ; Ovarian Neoplasms/metabolism/pathology
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    Subcapsular sinus macrophages prevent CNS invasion on peripheral infection with a neurotropic virus (2010)
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    Publication Date: 2010-06-26
    Description: Lymph nodes (LNs) capture microorganisms that breach the body's external barriers and enter draining lymphatics, limiting the systemic spread of pathogens. Recent work has shown that CD11b(+)CD169(+) macrophages, which populate the subcapsular sinus (SCS) of LNs, are critical for the clearance of viruses from the lymph and for initiating antiviral humoral immune responses. Here we show, using vesicular stomatitis virus (VSV), a relative of rabies virus transmitted by insect bites, that SCS macrophages perform a third vital function: they prevent lymph-borne neurotropic viruses from infecting the central nervous system (CNS). On local depletion of LN macrophages, about 60% of mice developed ascending paralysis and died 7-10 days after subcutaneous infection with a small dose of VSV, whereas macrophage-sufficient animals remained asymptomatic and cleared the virus. VSV gained access to the nervous system through peripheral nerves in macrophage-depleted LNs. In contrast, within macrophage-sufficient LNs VSV replicated preferentially in SCS macrophages but not in adjacent nerves. Removal of SCS macrophages did not compromise adaptive immune responses against VSV, but decreased type I interferon (IFN-I) production within infected LNs. VSV-infected macrophages recruited IFN-I-producing plasmacytoid dendritic cells to the SCS and in addition were a major source of IFN-I themselves. Experiments in bone marrow chimaeric mice revealed that IFN-I must act on both haematopoietic and stromal compartments, including the intranodal nerves, to prevent lethal infection with VSV. These results identify SCS macrophages as crucial gatekeepers to the CNS that prevent fatal viral invasion of the nervous system on peripheral infection.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2892812/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2892812/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iannacone, Matteo -- Moseman, E Ashley -- Tonti, Elena -- Bosurgi, Lidia -- Junt, Tobias -- Henrickson, Sarah E -- Whelan, Sean P -- Guidotti, Luca G -- von Andrian, Ulrich H -- AI069259/AI/NIAID NIH HHS/ -- AI072252/AI/NIAID NIH HHS/ -- AI078897/AI/NIAID NIH HHS/ -- AR42689/AR/NIAMS NIH HHS/ -- P01 AI078897/AI/NIAID NIH HHS/ -- P01 AI078897-01/AI/NIAID NIH HHS/ -- P01 CA071932/CA/NCI NIH HHS/ -- P01 CA071932-12S29003/CA/NCI NIH HHS/ -- R01 AI069259/AI/NIAID NIH HHS/ -- R01 AI069259-06/AI/NIAID NIH HHS/ -- R01 AI072252/AI/NIAID NIH HHS/ -- R01 AI072252-04/AI/NIAID NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- England -- Nature. 2010 Jun 24;465(7301):1079-83. doi: 10.1038/nature09118.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Immune Disease Institute and Department of Pathology, Harvard Medical School, 77 Avenue Louis Pasteur, Boston, Massachusetts 02115, USA. Matteo_Iannacone@hms.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20577213" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Central Nervous System/cytology/*immunology/*virology ; Dendritic Cells/immunology ; Injections ; Interferon Type I/immunology ; Lymph Nodes/cytology/*immunology/innervation/*virology ; Macrophages/*immunology/virology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Paralysis/complications/virology ; Peripheral Nerves/virology ; Receptor, Interferon alpha-beta/deficiency ; Rhabdoviridae Infections/complications/*immunology/virology ; Survival Rate ; Vesicular stomatitis Indiana virus/immunology/pathogenicity/physiology ; Vesicular stomatitis New Jersey virus/immunology/pathogenicity/physiology ; Vesiculovirus/*immunology/pathogenicity/physiology
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    Migrastatin analogues target fascin to block tumour metastasis (2010)
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    Publication Date: 2010-04-16
    Description: Tumour metastasis is the primary cause of death of cancer patients. Development of new therapeutics preventing tumour metastasis is urgently needed. Migrastatin is a natural product secreted by Streptomyces, and synthesized migrastatin analogues such as macroketone are potent inhibitors of metastatic tumour cell migration, invasion and metastasis. Here we show that these migrastatin analogues target the actin-bundling protein fascin to inhibit its activity. X-ray crystal structural studies reveal that migrastatin analogues bind to one of the actin-binding sites on fascin. Our data demonstrate that actin cytoskeletal proteins such as fascin can be explored as new molecular targets for cancer treatment, in a similar manner to the microtubule protein tubulin.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2857318/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2857318/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, Lin -- Yang, Shengyu -- Jakoncic, Jean -- Zhang, J Jillian -- Huang, Xin-Yun -- CA136837/CA/NCI NIH HHS/ -- R01 CA136837/CA/NCI NIH HHS/ -- R01 CA136837-01A1/CA/NCI NIH HHS/ -- England -- Nature. 2010 Apr 15;464(7291):1062-6. doi: 10.1038/nature08978.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Physiology, Cornell University Weill Medical College, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20393565" target="_blank"〉PubMed〈/a〉
    Keywords: Actins/metabolism ; Animals ; Antineoplastic Agents/chemistry/metabolism/pharmacology/therapeutic use ; Binding Sites/drug effects ; Breast Neoplasms/drug therapy/pathology ; Carrier Proteins/*antagonists & inhibitors/chemistry/genetics/metabolism ; Cell Line, Tumor ; Cell Movement/drug effects ; Crystallography, X-Ray ; Drug Resistance, Neoplasm/genetics ; Female ; Humans ; Lung Neoplasms/prevention & control/secondary ; Macrolides/*chemistry/metabolism/*pharmacology/therapeutic use ; Mice ; Mice, Inbred BALB C ; Mice, Inbred NOD ; Mice, SCID ; Microfilament Proteins/*antagonists & inhibitors/chemistry/genetics/metabolism ; Models, Molecular ; Mutation/genetics ; Neoplasm Invasiveness/pathology/prevention & control ; Neoplasm Metastasis/drug therapy/pathology/*prevention & control ; Piperidones/*chemistry/metabolism/*pharmacology/therapeutic use ; Protein Conformation
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    Altruism researchers must cooperate (2010)
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    Publication Date: 2010-10-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Okasha, Samir -- England -- Nature. 2010 Oct 7;467(7316):653-5. doi: 10.1038/467653a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Philosophy, University of Bristol, Bristol BS8 1TB, UK. Samir.Okasha@bristol.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20930821" target="_blank"〉PubMed〈/a〉
    Keywords: *Altruism ; Animals ; Biological Evolution ; *Cooperative Behavior ; Female ; Group Processes ; Male ; Models, Biological ; *Research Personnel ; Selection, Genetic ; Social Behavior
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    Sex determination: An avian sexual revolution (2010)
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    Publication Date: 2010-03-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barske, Lindsey A -- Capel, Blanche -- England -- Nature. 2010 Mar 11;464(7286):171-2. doi: 10.1038/464171a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20220830" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds/genetics/*physiology ; Chick Embryo ; Chickens ; Female ; Genotype ; Humans ; Male ; Mice ; Mosaicism ; Phenotype ; Sex Characteristics ; Sex Chromosomes/genetics ; *Sex Determination Processes
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    Blindsight depends on the lateral geniculate nucleus (2010)
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    Publication Date: 2010-06-25
    Description: Injury to the primary visual cortex (V1) leads to the loss of visual experience. Nonetheless, careful testing shows that certain visually guided behaviours can persist even in the absence of visual awareness. The neural circuits supporting this phenomenon, which is often termed blindsight, remain uncertain. Here we demonstrate that the thalamic lateral geniculate nucleus (LGN) has a causal role in V1-independent processing of visual information. By comparing functional magnetic resonance imaging (fMRI) and behavioural measures with and without temporary LGN inactivation, we assessed the contribution of the LGN to visual functions of macaque monkeys (Macaca mulatta) with chronic V1 lesions. Before LGN inactivation, high-contrast stimuli presented to the lesion-affected visual field (scotoma) produced significant V1-independent fMRI activation in the extrastriate cortical areas V2, V3, V4, V5/middle temporal (MT), fundus of the superior temporal sulcus (FST) and lateral intraparietal area (LIP) and the animals correctly located the stimuli in a detection task. However, following reversible inactivation of the LGN in the V1-lesioned hemisphere, fMRI responses and behavioural detection were abolished. These results demonstrate that direct LGN projections to the extrastriate cortex have a critical functional contribution to blindsight. They suggest a viable pathway to mediate fast detection during normal vision.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2904843/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2904843/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schmid, Michael C -- Mrowka, Sylwia W -- Turchi, Janita -- Saunders, Richard C -- Wilke, Melanie -- Peters, Andrew J -- Ye, Frank Q -- Leopold, David A -- Z01 MH002838-05/Intramural NIH HHS/ -- England -- Nature. 2010 Jul 15;466(7304):373-7. doi: 10.1038/nature09179. Epub 2010 Jun 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Neuropsychology, National Institute of Mental Health (NIMH), 49 Convent Drive, Bethesda, Maryland 20892, USA. schmidmicha@gmail.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20574422" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Female ; Geniculate Bodies/*physiology/physiopathology ; Macaca mulatta/*physiology ; Male ; Models, Neurological ; Photic Stimulation ; Visual Cortex/physiology/physiopathology ; Visual Pathways/*physiology/physiopathology ; Visual Perception/*physiology
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    Dendritic organization of sensory input to cortical neurons in vivo (2010)
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    Publication Date: 2010-04-30
    Description: In sensory cortex regions, neurons are tuned to specific stimulus features. For example, in the visual cortex, many neurons fire predominantly in response to moving objects of a preferred orientation. However, the characteristics of the synaptic input that cortical neurons receive to generate their output firing pattern remain unclear. Here we report a novel approach for the visualization and functional mapping of sensory inputs to the dendrites of cortical neurons in vivo. By combining high-speed two-photon imaging with electrophysiological recordings, we identify local subthreshold calcium signals that correspond to orientation-specific synaptic inputs. We find that even inputs that share the same orientation preference are widely distributed throughout the dendritic tree. At the same time, inputs of different orientation preference are interspersed, so that adjacent dendritic segments are tuned to distinct orientations. Thus, orientation-tuned neurons can compute their characteristic firing pattern by integrating spatially distributed synaptic inputs coding for multiple stimulus orientations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jia, Hongbo -- Rochefort, Nathalie L -- Chen, Xiaowei -- Konnerth, Arthur -- England -- Nature. 2010 Apr 29;464(7293):1307-12. doi: 10.1038/nature08947.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Neuroscience and Center for Integrated Protein Science, Technical University Munich, Biedersteinerstrasse 29, 80802 Munich, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20428163" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Calcium Signaling ; Dendrites/*physiology ; Mice ; Mice, Inbred C57BL ; Models, Neurological ; Sensory Receptor Cells/cytology/*physiology ; Synapses/metabolism ; Visual Cortex/*cytology
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    Animal behaviour: An ill wind for finches (2010)
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    Publication Date: 2010-02-19
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lincoln, Tim -- England -- Nature. 2010 Feb 18;463(7283):888. doi: 10.1038/463888a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20164914" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bird Diseases/*epidemiology/microbiology/transmission ; Cues ; Feeding Behavior/*physiology ; Female ; Finches/*physiology ; Male ; Mycoplasma Infections/epidemiology/microbiology/transmission/*veterinary ; *Mycoplasma gallisepticum/pathogenicity ; Sex Factors
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    Multiple personal genomes await (2010)
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    Publication Date: 2010-04-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Venter, J Craig -- England -- Nature. 2010 Apr 1;464(7289):676-7. doi: 10.1038/464676a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉J. Craig Venter Institute, La Jolla, California 92121, USA. jcventer@jcvi.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20360717" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Continental Population Groups/genetics ; Diploidy ; Female ; Genetic Predisposition to Disease/genetics ; Genetic Variation/genetics ; Genetics, Medical/*trends ; Genome, Human/*genetics ; Genomics/economics/history/*trends ; Haploidy ; Haplotypes/genetics ; History, 20th Century ; History, 21st Century ; Human Genome Project/economics/history ; Humans ; Male ; Phenotype ; Precision Medicine/*trends ; Sequence Analysis, DNA/economics/history/instrumentation/methods
    Print ISSN: 0028-0836
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    In vivo imaging of haematopoietic cells emerging from the mouse aortic endothelium (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-02-16
    Description: Haematopoietic stem cells (HSCs), responsible for blood production in the adult mouse, are first detected in the dorsal aorta starting at embryonic day 10.5 (E10.5). Immunohistological analysis of fixed embryo sections has revealed the presence of haematopoietic cell clusters attached to the aortic endothelium where HSCs might localize. The origin of HSCs has long been controversial and several candidates of the direct HSC precursors have been proposed (for review see ref. 7), including a specialized endothelial cell population with a haemogenic potential. Such cells have been described both in vitro in the embryonic stem cell (ESC) culture system and retrospectively in vivo by endothelial lineage tracing and conditional deletion experiments. Whether the transition from haemogenic endothelium to HSC actually occurs in the mouse embryonic aorta is still unclear and requires direct and real-time in vivo observation. To address this issue we used time-lapse confocal imaging and a new dissection procedure to visualize the deeply located aorta. Here we show the dynamic de novo emergence of phenotypically defined HSCs (Sca1(+), c-kit(+), CD41(+)) directly from ventral aortic haemogenic endothelial cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Boisset, Jean-Charles -- van Cappellen, Wiggert -- Andrieu-Soler, Charlotte -- Galjart, Niels -- Dzierzak, Elaine -- Robin, Catherine -- R37 DKO54077/PHS HHS/ -- England -- Nature. 2010 Mar 4;464(7285):116-20. doi: 10.1038/nature08764. Epub 2010 Feb 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Erasmus Medical Center, Department of Cell Biology, CA Rotterdam, The Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20154729" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aorta/*cytology/embryology/surgery ; *Cell Differentiation ; *Cell Lineage ; Core Binding Factor Alpha 2 Subunit/deficiency/genetics/metabolism ; Dissection ; Embryo, Mammalian/cytology ; Endothelial Cells/cytology ; Endothelium, Vascular/*cytology/embryology ; Female ; Hematopoietic Stem Cells/*cytology ; Male ; Mice ; Microscopy, Confocal ; Phenotype ; Pregnancy
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    Start/stop signals emerge in nigrostriatal circuits during sequence learning (2010)
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    Publication Date: 2010-07-24
    Description: Learning new action sequences subserves a plethora of different abilities such as escaping a predator, playing the piano, or producing fluent speech. Proper initiation and termination of each action sequence is critical for the organization of behaviour, and is compromised in nigrostriatal disorders like Parkinson's and Huntington's diseases. Using a self-paced operant task in which mice learn to perform a particular sequence of actions to obtain an outcome, we found neural activity in nigrostriatal circuits specifically signalling the initiation or the termination of each action sequence. This start/stop activity emerged during sequence learning, was specific for particular actions, and did not reflect interval timing, movement speed or action value. Furthermore, genetically altering the function of striatal circuits disrupted the development of start/stop activity and selectively impaired sequence learning. These results have important implications for understanding the functional organization of actions and the sequence initiation and termination impairments observed in basal ganglia disorders.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3477867/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3477867/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Jin, Xin -- Costa, Rui M -- 243393/European Research Council/International -- Z01 AA000416-02/Intramural NIH HHS/ -- England -- Nature. 2010 Jul 22;466(7305):457-62. doi: 10.1038/nature09263.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Integrative Neuroscience, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 5625 Fishers Lane, Bethesda, Maryland 20892-9412, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20651684" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Animals ; Behavior, Animal/physiology ; Dopamine/metabolism ; Glutamic Acid/metabolism ; Learning/*physiology ; Male ; Mice ; Mice, Inbred C57BL ; Models, Neurological ; Neostriatum/*physiology ; Neural Pathways/*physiology ; Receptors, N-Methyl-D-Aspartate/deficiency/genetics/metabolism ; Substantia Nigra/*physiology
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    Coupled dynamics of body mass and population growth in response to environmental change (2010)
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    Publication Date: 2010-07-24
    Description: Environmental change has altered the phenology, morphological traits and population dynamics of many species. However, the links underlying these joint responses remain largely unknown owing to a paucity of long-term data and the lack of an appropriate analytical framework. Here we investigate the link between phenotypic and demographic responses to environmental change using a new methodology and a long-term (1976-2008) data set from a hibernating mammal (the yellow-bellied marmot) inhabiting a dynamic subalpine habitat. We demonstrate how earlier emergence from hibernation and earlier weaning of young has led to a longer growing season and larger body masses before hibernation. The resulting shift in both the phenotype and the relationship between phenotype and fitness components led to a decline in adult mortality, which in turn triggered an abrupt increase in population size in recent years. Direct and trait-mediated effects of environmental change made comparable contributions to the observed marked increase in population growth. Our results help explain how a shift in phenology can cause simultaneous phenotypic and demographic changes, and highlight the need for a theory integrating ecological and evolutionary dynamics in stochastic environments.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ozgul, Arpat -- Childs, Dylan Z -- Oli, Madan K -- Armitage, Kenneth B -- Blumstein, Daniel T -- Olson, Lucretia E -- Tuljapurkar, Shripad -- Coulson, Tim -- P01 AG022500/AG/NIA NIH HHS/ -- Wellcome Trust/United Kingdom -- England -- Nature. 2010 Jul 22;466(7305):482-5. doi: 10.1038/nature09210.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Life Sciences, Imperial College London, Ascot, Berkshire SL5 7PY, UK. a.ozgul@imperial.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20651690" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Evolution ; Body Weight/*physiology ; Colorado ; Female ; *Global Warming ; Hibernation/*physiology ; Marmota/*anatomy & histology/growth & development/*physiology ; Phenotype ; Population Dynamics ; Reproduction/physiology ; Survival Rate ; Time Factors ; Weaning
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    Gender agenda: sex bias can be justified in animal research (2010)
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    Publication Date: 2010-07-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bolon, Brad -- England -- Nature. 2010 Jul 1;466(7302):28. doi: 10.1038/466028d.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20595991" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Experimentation/standards ; Animals ; Animals, Laboratory ; *Bias (Epidemiology) ; Clinical Trials as Topic ; Editorial Policies ; Female ; Humans ; Male ; *Models, Animal ; *Research Design ; *Sex Characteristics
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    Climate-driven population divergence in sex-determining systems (2010)
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    Publication Date: 2010-10-29
    Description: Sex determination is a fundamental biological process, yet its mechanisms are remarkably diverse. In vertebrates, sex can be determined by inherited genetic factors or by the temperature experienced during embryonic development. However, the evolutionary causes of this diversity remain unknown. Here we show that live-bearing lizards at different climatic extremes of the species' distribution differ in their sex-determining mechanisms, with temperature-dependent sex determination in lowlands and genotypic sex determination in highlands. A theoretical model parameterized with field data accurately predicts this divergence in sex-determining systems and the consequence thereof for variation in cohort sex ratios among years. Furthermore, we show that divergent natural selection on sex determination across altitudes is caused by climatic effects on lizard life history and variation in the magnitude of between-year temperature fluctuations. Our results establish an adaptive explanation for intra-specific divergence in sex-determining systems driven by phenotypic plasticity and ecological selection, thereby providing a unifying framework for integrating the developmental, ecological and evolutionary basis for variation in vertebrate sex determination.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pen, Ido -- Uller, Tobias -- Feldmeyer, Barbara -- Harts, Anna -- While, Geoffrey M -- Wapstra, Erik -- England -- Nature. 2010 Nov 18;468(7322):436-8. doi: 10.1038/nature09512. Epub 2010 Oct 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Theoretical Biology Group, University of Groningen, PO Box 14, 9750 AA Haren, the Netherlands. i.r.pen@rug.nl〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20981009" target="_blank"〉PubMed〈/a〉
    Keywords: Altitude ; Animals ; Biological Evolution ; *Climate ; Female ; Genotype ; Lizards/*genetics/*physiology ; Male ; Models, Biological ; Phenotype ; Selection, Genetic ; Sex Chromosomes ; *Sex Determination Processes/genetics/physiology ; *Sex Differentiation/genetics/physiology ; Sex Ratio ; *Temperature ; Time Factors ; Viviparity, Nonmammalian/physiology
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    Physiology: The bones of contention (2010)
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    Publication Date: 2010-08-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Katsnelson, Alla -- England -- Nature. 2010 Aug 19;466(7309):914-5. doi: 10.1038/466914a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20725014" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bone Remodeling ; Bone and Bones/*physiology ; Diabetes Mellitus/metabolism/therapy ; *Energy Metabolism ; Female ; Glucose/*metabolism ; Humans ; Insulin/metabolism/secretion ; Islets of Langerhans/secretion ; Leptin/deficiency/genetics/metabolism ; Mice ; Obesity/metabolism ; Osteocalcin/blood/deficiency/genetics/metabolism ; Osteoporosis/metabolism ; Receptor, Insulin/deficiency/genetics/metabolism
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    Neuroscience: A mine of imprinted genes (2010)
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    Publication Date: 2010-08-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keverne, Eric B -- England -- Nature. 2010 Aug 12;466(7308):823-4. doi: 10.1038/466823a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20703293" target="_blank"〉PubMed〈/a〉
    Keywords: *Alleles ; Animals ; Bias (Epidemiology) ; Brain/cytology/*metabolism ; Fathers ; Female ; Genomic Imprinting/*genetics ; Male ; Mice ; Models, Genetic ; Mothers ; X Chromosome/genetics
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    Strange lesions after stem-cell therapy (2010)
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    Publication Date: 2010-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cyranoski, David -- England -- Nature. 2010 Jun 24;465(7301):997. doi: 10.1038/465997a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20577182" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Child ; Fatal Outcome ; Female ; *Hematopoietic Stem Cell Transplantation/adverse effects ; Humans ; Lupus Nephritis/*complications/*therapy ; Male ; Thailand
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    What will get sick from the slick? (2010)
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    Publication Date: 2010-07-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gaskill, Melissa -- England -- Nature. 2010 Jul 1;466(7302):14-5. doi: 10.1038/466014a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20595980" target="_blank"〉PubMed〈/a〉
    Keywords: Animal Identification Systems/utilization ; Animal Migration ; Animals ; *Disasters ; *Ecosystem ; Female ; Food Chain ; Larva/drug effects/growth & development ; Marine Biology ; Mexico ; Oceans and Seas ; Petroleum/analysis/*poisoning/*toxicity ; Seawater/*chemistry ; Sharks/physiology ; Survival Rate ; Tuna/physiology ; Turtles/physiology ; Whales/physiology
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    Toxicology: The big test for bisphenol A (2010)
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    Publication Date: 2010-04-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Borrell, Brendan -- England -- Nature. 2010 Apr 22;464(7292):1122-4. doi: 10.1038/4641122a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20414285" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzhydryl Compounds ; Chemical Industry/methods/standards ; Endocrine Disruptors/adverse effects/toxicity ; Estrogens, Non-Steroidal/adverse effects/toxicity ; Female ; Guidelines as Topic ; Humans ; Infant ; Male ; Mice ; National Institute of Environmental Health Sciences (U.S.) ; Neoplasms/chemically induced/etiology ; Phenols/adverse effects/*toxicity ; Rats ; Toxicity Tests/methods/standards ; Toxicology/economics/*methods/*standards ; United States ; United States Environmental Protection Agency ; Validation Studies as Topic
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    Sex bias in trials and treatment must end (2010)
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    Publication Date: 2010-06-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kim, Alison M -- Tingen, Candace M -- Woodruff, Teresa K -- England -- Nature. 2010 Jun 10;465(7299):688-9. doi: 10.1038/465688a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20535184" target="_blank"〉PubMed〈/a〉
    Keywords: Bias (Epidemiology) ; Biomedical Research/methods/*trends ; Clinical Trials as Topic/methods/*trends ; Drug Dosage Calculations ; Female ; Genomic Imprinting ; Humans ; Male ; Precision Medicine/trends ; *Sex Characteristics ; Sex Distribution ; Sex Factors
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    Role of conserved non-coding DNA elements in the Foxp3 gene in regulatory T-cell fate (2010)
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    Publication Date: 2010-01-15
    Description: Immune homeostasis is dependent on tight control over the size of a population of regulatory T (T(reg)) cells capable of suppressing over-exuberant immune responses. The T(reg) cell subset is comprised of cells that commit to the T(reg) lineage by upregulating the transcription factor Foxp3 either in the thymus (tT(reg)) or in the periphery (iT(reg)). Considering a central role for Foxp3 in T(reg) cell differentiation and function, we proposed that conserved non-coding DNA sequence (CNS) elements at the Foxp3 locus encode information defining the size, composition and stability of the T(reg) cell population. Here we describe the function of three Foxp3 CNS elements (CNS1-3) in T(reg) cell fate determination in mice. The pioneer element CNS3, which acts to potently increase the frequency of T(reg) cells generated in the thymus and the periphery, binds c-Rel in in vitro assays. In contrast, CNS1, which contains a TGF-beta-NFAT response element, is superfluous for tT(reg) cell differentiation, but has a prominent role in iT(reg) cell generation in gut-associated lymphoid tissues. CNS2, although dispensable for Foxp3 induction, is required for Foxp3 expression in the progeny of dividing T(reg) cells. Foxp3 binds to CNS2 in a Cbf-beta-Runx1 and CpG DNA demethylation-dependent manner, suggesting that Foxp3 recruitment to this 'cellular memory module' facilitates the heritable maintenance of the active state of the Foxp3 locus and, therefore, T(reg) lineage stability. Together, our studies demonstrate that the composition, size and maintenance of the T(reg) cell population are controlled by Foxp3 CNS elements engaged in response to distinct cell-extrinsic or -intrinsic cues.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2884187/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2884187/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Zheng, Ye -- Josefowicz, Steven -- Chaudhry, Ashutosh -- Peng, Xiao P -- Forbush, Katherine -- Rudensky, Alexander Y -- R37 AI034206/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Feb 11;463(7282):808-12. doi: 10.1038/nature08750. Epub 2010 Jan 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute and Department of Immunology, University of Washington, Seattle, Washington 98195, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20072126" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Differentiation ; Cell Lineage/*genetics ; Chromatin Assembly and Disassembly ; Conserved Sequence/*genetics ; CpG Islands/genetics ; DNA Methylation ; Female ; Forkhead Transcription Factors/*genetics/metabolism ; Gene Expression Regulation ; Lymphocyte Count ; Male ; Mice ; Mice, Inbred C57BL ; Proto-Oncogene Proteins c-rel/metabolism ; Regulatory Sequences, Nucleic Acid/*genetics ; Response Elements/genetics ; T-Lymphocytes, Regulatory/*cytology/immunology/*metabolism ; Thymus Gland/cytology/immunology/metabolism
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    Science in court: head case (2010)
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    Publication Date: 2010-03-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hughes, Virginia -- England -- Nature. 2010 Mar 18;464(7287):340-2. doi: 10.1038/464340a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20237536" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Antisocial Personality Disorder/physiopathology/psychology ; Child ; Female ; Forensic Sciences/ethics/*methods/trends ; Homicide/*legislation & jurisprudence/*psychology ; Humans ; Insanity Defense ; Magnetic Resonance Imaging/standards/*utilization ; Male ; *Neurosciences ; Positron-Emission Tomography/utilization ; Rape/legislation & jurisprudence/psychology ; Reproducibility of Results
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    DNMT1 maintains progenitor function in self-renewing somatic tissue (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-01-19
    Description: Progenitor cells maintain self-renewing tissues throughout life by sustaining their capacity for proliferation while suppressing cell cycle exit and terminal differentiation. DNA methylation provides a potential epigenetic mechanism for the cellular memory needed to preserve the somatic progenitor state through repeated cell divisions. DNA methyltransferase 1 (DNMT1) maintains DNA methylation patterns after cellular replication. Although dispensable for embryonic stem cell maintenance, the role for DNMT1 in maintaining the progenitor state in constantly replenished somatic tissues, such as mammalian epidermis, is unclear. Here we show that DNMT1 is essential for epidermal progenitor cell function. DNMT1 protein was found enriched in undifferentiated cells, where it was required to retain proliferative stamina and suppress differentiation. In tissue, DNMT1 depletion led to exit from the progenitor cell compartment, premature differentiation and eventual tissue loss. Genome-wide analysis showed that a significant portion of epidermal differentiation gene promoters were methylated in self-renewing conditions but were subsequently demethylated during differentiation. Furthermore, UHRF1 (refs 9, 10), a component of the DNA methylation machinery that targets DNMT1 to hemi-methylated DNA, is also necessary to suppress premature differentiation and sustain proliferation. In contrast, Gadd45A and B, which promote active DNA demethylation, are required for full epidermal differentiation gene induction. These data demonstrate that proteins involved in the dynamic regulation of DNA methylation patterns are required for progenitor maintenance and self-renewal in mammalian somatic tissue.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3050546/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3050546/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sen, George L -- Reuter, Jason A -- Webster, Daniel E -- Zhu, Lilly -- Khavari, Paul A -- AR055849/AR/NIAMS NIH HHS/ -- AR45192/AR/NIAMS NIH HHS/ -- F32 AR055849/AR/NIAMS NIH HHS/ -- F32 AR055849-02/AR/NIAMS NIH HHS/ -- K01 AR057828/AR/NIAMS NIH HHS/ -- R01 AR045192/AR/NIAMS NIH HHS/ -- R01 AR045192-11A2/AR/NIAMS NIH HHS/ -- R01 AR049737/AR/NIAMS NIH HHS/ -- R01 AR049737-05/AR/NIAMS NIH HHS/ -- T32 CA009302/CA/NCI NIH HHS/ -- England -- Nature. 2010 Jan 28;463(7280):563-7. doi: 10.1038/nature08683. Epub 2010 Jan 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Programs in Epithelial Biology and Cancer Biology and the Stanford Institute for Stem Cell Biology and Regenerative Medicine, Stanford University, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20081831" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Differentiation ; Cell Proliferation ; Cells, Cultured ; DNA Methylation ; Down-Regulation ; Epidermis/*cytology/*metabolism ; Female ; Gene Silencing ; Humans ; Mice ; Mice, SCID ; Repressor Proteins/deficiency/genetics/*metabolism ; Stem Cells/*cytology/*metabolism
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    Genome, epigenome and RNA sequences of monozygotic twins discordant for multiple sclerosis (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-04-30
    Description: Monozygotic or 'identical' twins have been widely studied to dissect the relative contributions of genetics and environment in human diseases. In multiple sclerosis (MS), an autoimmune demyelinating disease and common cause of neurodegeneration and disability in young adults, disease discordance in monozygotic twins has been interpreted to indicate environmental importance in its pathogenesis. However, genetic and epigenetic differences between monozygotic twins have been described, challenging the accepted experimental model in disambiguating the effects of nature and nurture. Here we report the genome sequences of one MS-discordant monozygotic twin pair, and messenger RNA transcriptome and epigenome sequences of CD4(+) lymphocytes from three MS-discordant, monozygotic twin pairs. No reproducible differences were detected between co-twins among approximately 3.6 million single nucleotide polymorphisms (SNPs) or approximately 0.2 million insertion-deletion polymorphisms. Nor were any reproducible differences observed between siblings of the three twin pairs in HLA haplotypes, confirmed MS-susceptibility SNPs, copy number variations, mRNA and genomic SNP and insertion-deletion genotypes, or the expression of approximately 19,000 genes in CD4(+) T cells. Only 2 to 176 differences in the methylation of approximately 2 million CpG dinucleotides were detected between siblings of the three twin pairs, in contrast to approximately 800 methylation differences between T cells of unrelated individuals and several thousand differences between tissues or between normal and cancerous tissues. In the first systematic effort to estimate sequence variation among monozygotic co-twins, we did not find evidence for genetic, epigenetic or transcriptome differences that explained disease discordance. These are the first, to our knowledge, female, twin and autoimmune disease individual genome sequences reported.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2862593/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2862593/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baranzini, Sergio E -- Mudge, Joann -- van Velkinburgh, Jennifer C -- Khankhanian, Pouya -- Khrebtukova, Irina -- Miller, Neil A -- Zhang, Lu -- Farmer, Andrew D -- Bell, Callum J -- Kim, Ryan W -- May, Gregory D -- Woodward, Jimmy E -- Caillier, Stacy J -- McElroy, Joseph P -- Gomez, Refujia -- Pando, Marcelo J -- Clendenen, Leonda E -- Ganusova, Elena E -- Schilkey, Faye D -- Ramaraj, Thiruvarangan -- Khan, Omar A -- Huntley, Jim J -- Luo, Shujun -- Kwok, Pui-Yan -- Wu, Thomas D -- Schroth, Gary P -- Oksenberg, Jorge R -- Hauser, Stephen L -- Kingsmore, Stephen F -- P20 RR016480/RR/NCRR NIH HHS/ -- P20 RR016480-09/RR/NCRR NIH HHS/ -- R01 NS026799/NS/NINDS NIH HHS/ -- R01 NS026799-20A1/NS/NINDS NIH HHS/ -- R01 NS046297/NS/NINDS NIH HHS/ -- R01 NS046297-06/NS/NINDS NIH HHS/ -- R01NS26799/NS/NINDS NIH HHS/ -- R01NS46297/NS/NINDS NIH HHS/ -- RR016480/RR/NCRR NIH HHS/ -- U01 AI066569/AI/NIAID NIH HHS/ -- U01 AI066569-05/AI/NIAID NIH HHS/ -- U19 HD077693/HD/NICHD NIH HHS/ -- England -- Nature. 2010 Apr 29;464(7293):1351-6. doi: 10.1038/nature08990.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, University of California at San Francisco, San Francisco, California 94143, USA. sebaran@cgl.ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20428171" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Allelic Imbalance/genetics ; Breast/metabolism ; Breast Neoplasms/genetics ; CD4-Positive T-Lymphocytes/metabolism ; Case-Control Studies ; CpG Islands/genetics ; DNA Copy Number Variations/genetics ; DNA Methylation/genetics ; Epigenesis, Genetic/*genetics ; Female ; Genetic Predisposition to Disease/genetics ; Genome, Human/*genetics ; Haplotypes/genetics ; Heterozygote ; Humans ; INDEL Mutation/genetics ; Lung/metabolism ; Lung Neoplasms/genetics ; Male ; Multiple Sclerosis/*genetics ; Polymorphism, Genetic/genetics ; Quantitative Trait Loci/genetics ; RNA, Messenger/analysis/*genetics/metabolism ; Twins, Monozygotic/*genetics
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    Selective inhibition of BET bromodomains (2010)
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    Publication Date: 2010-09-28
    Description: Epigenetic proteins are intently pursued targets in ligand discovery. So far, successful efforts have been limited to chromatin modifying enzymes, or so-called epigenetic 'writers' and 'erasers'. Potent inhibitors of histone binding modules have not yet been described. Here we report a cell-permeable small molecule (JQ1) that binds competitively to acetyl-lysine recognition motifs, or bromodomains. High potency and specificity towards a subset of human bromodomains is explained by co-crystal structures with bromodomain and extra-terminal (BET) family member BRD4, revealing excellent shape complementarity with the acetyl-lysine binding cavity. Recurrent translocation of BRD4 is observed in a genetically-defined, incurable subtype of human squamous carcinoma. Competitive binding by JQ1 displaces the BRD4 fusion oncoprotein from chromatin, prompting squamous differentiation and specific antiproliferative effects in BRD4-dependent cell lines and patient-derived xenograft models. These data establish proof-of-concept for targeting protein-protein interactions of epigenetic 'readers', and provide a versatile chemical scaffold for the development of chemical probes more broadly throughout the bromodomain family.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3010259/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3010259/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Filippakopoulos, Panagis -- Qi, Jun -- Picaud, Sarah -- Shen, Yao -- Smith, William B -- Fedorov, Oleg -- Morse, Elizabeth M -- Keates, Tracey -- Hickman, Tyler T -- Felletar, Ildiko -- Philpott, Martin -- Munro, Shonagh -- McKeown, Michael R -- Wang, Yuchuan -- Christie, Amanda L -- West, Nathan -- Cameron, Michael J -- Schwartz, Brian -- Heightman, Tom D -- La Thangue, Nicholas -- French, Christopher A -- Wiest, Olaf -- Kung, Andrew L -- Knapp, Stefan -- Bradner, James E -- 13058/Cancer Research UK/United Kingdom -- G0500905/Medical Research Council/United Kingdom -- G1000807/Medical Research Council/United Kingdom -- G9400953/Medical Research Council/United Kingdom -- K08 CA128972/CA/NCI NIH HHS/ -- K08 CA128972-03/CA/NCI NIH HHS/ -- T32-075762/PHS HHS/ -- Canadian Institutes of Health Research/Canada -- Wellcome Trust/United Kingdom -- England -- Nature. 2010 Dec 23;468(7327):1067-73. doi: 10.1038/nature09504. Epub 2010 Sep 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Clinical Medicine, Structural Genomics Consortium, University of Oxford, Old Road Campus, Roosevelt Drive, Oxford OX3 7DQ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20871596" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Azirines/chemical synthesis/chemistry/*pharmacology ; Binding Sites ; Carcinoma, Squamous Cell/physiopathology ; Cell Differentiation/drug effects ; Cell Line, Tumor ; Cell Proliferation/drug effects ; Chromatin/metabolism ; Dihydropyridines/chemical synthesis/chemistry/*pharmacology ; Female ; Humans ; Mice ; Mice, Nude ; *Models, Molecular ; Molecular Sequence Data ; Nuclear Proteins/*antagonists & inhibitors/*metabolism ; Protein Binding/drug effects ; Protein Structure, Tertiary ; Recombinant Proteins/metabolism ; Sequence Alignment ; Skin Neoplasms/physiopathology ; Stereoisomerism ; Transcription Factors/*antagonists & inhibitors/*metabolism
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    Convergent evolution of chicken Z and human X chromosomes by expansion and gene acquisition (2010)
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    Publication Date: 2010-07-14
    Description: In birds, as in mammals, one pair of chromosomes differs between the sexes. In birds, males are ZZ and females ZW. In mammals, males are XY and females XX. Like the mammalian XY pair, the avian ZW pair is believed to have evolved from autosomes, with most change occurring in the chromosomes found in only one sex--the W and Y chromosomes. By contrast, the sex chromosomes found in both sexes--the Z and X chromosomes--are assumed to have diverged little from their autosomal progenitors. Here we report findings that challenge this assumption for both the chicken Z chromosome and the human X chromosome. The chicken Z chromosome, which we sequenced essentially to completion, is less gene-dense than chicken autosomes but contains a massive tandem array containing hundreds of duplicated genes expressed in testes. A comprehensive comparison of the chicken Z chromosome with the finished sequence of the human X chromosome demonstrates that each evolved independently from different portions of the ancestral genome. Despite this independence, the chicken Z and human X chromosomes share features that distinguish them from autosomes: the acquisition and amplification of testis-expressed genes, and a low gene density resulting from an expansion of intergenic regions. These features were not present on the autosomes from which the Z and X chromosomes originated but were instead acquired during the evolution of Z and X as sex chromosomes. We conclude that the avian Z and mammalian X chromosomes followed convergent evolutionary trajectories, despite their evolving with opposite (female versus male) systems of heterogamety. More broadly, in birds and mammals, sex chromosome evolution involved not only gene loss in sex-specific chromosomes, but also marked expansion and gene acquisition in sex chromosomes common to males and females.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2943333/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2943333/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bellott, Daniel W -- Skaletsky, Helen -- Pyntikova, Tatyana -- Mardis, Elaine R -- Graves, Tina -- Kremitzki, Colin -- Brown, Laura G -- Rozen, Steve -- Warren, Wesley C -- Wilson, Richard K -- Page, David C -- R01 HG000257/HG/NHGRI NIH HHS/ -- R01 HG000257-21/HG/NHGRI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Jul 29;466(7306):612-6. doi: 10.1038/nature09172. Epub 2010 Jul 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge, Massachusetts 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20622855" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chickens/*genetics ; Chromosomes, Human, X/*genetics ; *Evolution, Molecular ; Female ; Gene Deletion ; Genes/*genetics ; Genome/genetics ; Humans ; Male ; Multigene Family/genetics ; Sex Characteristics ; Sex Chromosomes/*genetics ; Testis/metabolism
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    Learning from the elite (2010)
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    Publication Date: 2010-07-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Trivedi, Bijal -- England -- Nature. 2010 Jul 15;466(7304):S4. doi: 10.1038/nature09235.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20631703" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/genetics/*immunology/prevention & ; control/virology ; Alleles ; *Disease Progression ; Female ; Genetic Predisposition to Disease/genetics ; Genome-Wide Association Study ; HIV/genetics/immunology ; HIV Infections/genetics/*immunology/prevention & control/virology ; *HIV Long-Term Survivors/statistics & numerical data ; HLA-B Antigens/genetics/immunology ; Humans ; Immunity, Innate/genetics/*immunology ; Major Histocompatibility Complex/genetics ; Male ; Polymorphism, Single Nucleotide/genetics ; RNA, Viral/blood
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    Encoding of conditioned fear in central amygdala inhibitory circuits (2010)
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    Publication Date: 2010-11-12
    Description: The central amygdala (CEA), a nucleus predominantly composed of GABAergic inhibitory neurons, is essential for fear conditioning. How the acquisition and expression of conditioned fear are encoded within CEA inhibitory circuits is not understood. Using in vivo electrophysiological, optogenetic and pharmacological approaches in mice, we show that neuronal activity in the lateral subdivision of the central amygdala (CEl) is required for fear acquisition, whereas conditioned fear responses are driven by output neurons in the medial subdivision (CEm). Functional circuit analysis revealed that inhibitory CEA microcircuits are highly organized and that cell-type-specific plasticity of phasic and tonic activity in the CEl to CEm pathway may gate fear expression and regulate fear generalization. Our results define the functional architecture of CEA microcircuits and their role in the acquisition and regulation of conditioned fear behaviour.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ciocchi, Stephane -- Herry, Cyril -- Grenier, Francois -- Wolff, Steffen B E -- Letzkus, Johannes J -- Vlachos, Ioannis -- Ehrlich, Ingrid -- Sprengel, Rolf -- Deisseroth, Karl -- Stadler, Michael B -- Muller, Christian -- Luthi, Andreas -- England -- Nature. 2010 Nov 11;468(7321):277-82. doi: 10.1038/nature09559.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Friedrich Miescher Institute for Biomedical Research, Maulbeerstrasse 66, 4058 Basel, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21068837" target="_blank"〉PubMed〈/a〉
    Keywords: Action Potentials ; Amygdala/anatomy & histology/cytology/*physiology ; Animals ; Conditioning, Classical/*physiology ; Fear/*physiology ; Freezing Reaction, Cataleptic ; Male ; Mice ; Mice, Inbred C57BL ; Neural Inhibition/*physiology ; Neural Pathways/cytology/*physiology ; Neuronal Plasticity/physiology ; Neurons/physiology ; gamma-Aminobutyric Acid/metabolism
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    mTORC1 controls fasting-induced ketogenesis and its modulation by ageing (2010)
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    Publication Date: 2010-12-24
    Description: The multi-component mechanistic target of rapamycin complex 1 (mTORC1) kinase is the central node of a mammalian pathway that coordinates cell growth with the availability of nutrients, energy and growth factors. Progress has been made in the identification of mTORC1 pathway components and in understanding their functions in cells, but there is relatively little known about the role of the pathway in vivo. Specifically, we have little knowledge regarding the role mTOCR1 has in liver physiology. In fasted animals, the liver performs numerous functions that maintain whole-body homeostasis, including the production of ketone bodies for peripheral tissues to use as energy sources. Here we show that mTORC1 controls ketogenesis in mice in response to fasting. We find that liver-specific loss of TSC1 (tuberous sclerosis 1), an mTORC1 inhibitor, leads to a fasting-resistant increase in liver size, and to a pronounced defect in ketone body production and ketogenic gene expression on fasting. The loss of raptor (regulatory associated protein of mTOR, complex 1) an essential mTORC1 component, has the opposite effects. In addition, we find that the inhibition of mTORC1 is required for the fasting-induced activation of PPARalpha (peroxisome proliferator activated receptor alpha), the master transcriptional activator of ketogenic genes, and that suppression of NCoR1 (nuclear receptor co-repressor 1), a co-repressor of PPARalpha, reactivates ketogenesis in cells and livers with hyperactive mTORC1 signalling. Like livers with activated mTORC1, livers from aged mice have a defect in ketogenesis, which correlates with an increase in mTORC1 signalling. Moreover, we show that the suppressive effects of mTORC1 activation and ageing on PPARalpha activity and ketone production are not additive, and that mTORC1 inhibition is sufficient to prevent the ageing-induced defect in ketogenesis. Thus, our findings reveal that mTORC1 is a key regulator of PPARalpha function and hepatic ketogenesis and suggest a role for mTORC1 activity in promoting the ageing of the liver.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sengupta, Shomit -- Peterson, Timothy R -- Laplante, Mathieu -- Oh, Stephanie -- Sabatini, David M -- CA103866/CA/NCI NIH HHS/ -- CA129105/CA/NCI NIH HHS/ -- R01 CA129105/CA/NCI NIH HHS/ -- R01 CA129105-04/CA/NCI NIH HHS/ -- Canadian Institutes of Health Research/Canada -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Dec 23;468(7327):1100-4. doi: 10.1038/nature09584.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Whitehead Institute for Biomedical Research, Nine Cambridge Center, Cambridge, Massachusetts 02142, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21179166" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Animals ; Cell Line ; Fasting/*metabolism ; *Gene Expression Regulation ; Humans ; Ketone Bodies/*biosynthesis/metabolism ; Liver/metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Multiprotein Complexes ; Nuclear Receptor Co-Repressor 1/metabolism ; PPAR alpha/antagonists & inhibitors/metabolism ; Proteins/genetics/*metabolism ; TOR Serine-Threonine Kinases
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    Reducing excessive GABA-mediated tonic inhibition promotes functional recovery after stroke (2010)
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    Publication Date: 2010-11-05
    Description: Stroke is a leading cause of disability, but no pharmacological therapy is currently available for promoting recovery. The brain region adjacent to stroke damage-the peri-infarct zone-is critical for rehabilitation, as it shows heightened neuroplasticity, allowing sensorimotor functions to re-map from damaged areas. Thus, understanding the neuronal properties constraining this plasticity is important for the development of new treatments. Here we show that after a stroke in mice, tonic neuronal inhibition is increased in the peri-infarct zone. This increased tonic inhibition is mediated by extrasynaptic GABA(A) receptors and is caused by an impairment in GABA (gamma-aminobutyric acid) transporter (GAT-3/GAT-4) function. To counteract the heightened inhibition, we administered in vivo a benzodiazepine inverse agonist specific for alpha5-subunit-containing extrasynaptic GABA(A) receptors at a delay after stroke. This treatment produced an early and sustained recovery of motor function. Genetically lowering the number of alpha5- or delta-subunit-containing GABA(A) receptors responsible for tonic inhibition also proved beneficial for recovery after stroke, consistent with the therapeutic potential of diminishing extrasynaptic GABA(A) receptor function. Together, our results identify new pharmacological targets and provide the rationale for a novel strategy to promote recovery after stroke and possibly other brain injuries.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058798/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3058798/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clarkson, Andrew N -- Huang, Ben S -- Macisaac, Sarah E -- Mody, Istvan -- Carmichael, S Thomas -- NS30549/NS/NINDS NIH HHS/ -- R01 NS030549/NS/NINDS NIH HHS/ -- R01 NS030549-18/NS/NINDS NIH HHS/ -- England -- Nature. 2010 Nov 11;468(7321):305-9. doi: 10.1038/nature09511. Epub 2010 Nov 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurology, The David Geffen School of Medicine at UCLA, 635 Charles Young Drive South, Los Angeles, California 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21048709" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Benzodiazepines/pharmacology ; Cerebral Infarction/metabolism/pathology/physiopathology ; Disease Models, Animal ; Drug Inverse Agonism ; GABA Antagonists/pharmacology ; GABA Plasma Membrane Transport Proteins/metabolism ; Imidazoles/pharmacology ; Male ; Membrane Potentials/drug effects ; Mice ; Mice, Inbred C57BL ; Motor Cortex/metabolism/pathology/*physiology/*physiopathology ; Neuronal Plasticity/physiology ; Receptors, GABA/deficiency/genetics/metabolism ; Recovery of Function/*physiology ; Stroke/drug therapy/*metabolism/pathology ; Synapses/metabolism ; Time Factors ; gamma-Aminobutyric Acid/*metabolism
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    Putting gender on the agenda (2010)
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    Details
    Publication Date: 2010-06-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉England -- Nature. 2010 Jun 10;465(7299):665. doi: 10.1038/465665a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20535156" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bias (Epidemiology) ; Biomedical Research/*methods/*trends ; Clinical Trials as Topic/*methods/*trends ; Evidence-Based Medicine/methods/trends ; Female ; Humans ; Male ; Precision Medicine/methods/trends ; Pregnancy ; *Sex Characteristics ; Sex Factors
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    Chagas disease: pushing through the pipeline (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-06-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clayton, Julie -- England -- Nature. 2010 Jun 24;465(7301):S12-5. doi: 10.1038/nature09224.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20571548" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Chagas Disease/complications/diagnosis/*drug therapy/parasitology ; Child ; Chronic Disease ; Clinical Trials as Topic ; Drug Evaluation, Preclinical/*trends ; Female ; Humans ; Infant, Newborn ; Lupus Erythematosus, Systemic/complications/drug therapy/immunology ; Molecular Targeted Therapy/trends ; Nitroimidazoles/therapeutic use ; Triazoles/pharmacology/therapeutic use ; *Trypanocidal Agents/economics/pharmacology/therapeutic use ; Trypanosoma cruzi/drug effects/enzymology/genetics/metabolism ; Young Adult
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    Evolutionary biology: pregnant fathers in charge (2010)
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    Publication Date: 2010-03-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Berglund, Anders -- England -- Nature. 2010 Mar 18;464(7287):364-5. doi: 10.1038/464364a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20237558" target="_blank"〉PubMed〈/a〉
    Keywords: Abortion, Eugenic/veterinary ; Animals ; *Biological Evolution ; Body Size/physiology ; *Conflict (Psychology) ; Embryo, Nonmammalian/embryology/physiology ; Embryonic Development/*physiology ; Female ; Male ; Mating Preference, Animal/*physiology ; Paternal Behavior ; Selection, Genetic ; *Sex ; Sex Characteristics ; Smegmamorpha/anatomy & histology/embryology/*physiology ; Survival Rate
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    Pregnant women deserve better (2010)
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    Publication Date: 2010-06-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Baylis, Francoise -- England -- Nature. 2010 Jun 10;465(7299):689-90. doi: 10.1038/465689a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bioethics, Dalhousie University, Halifax, Nova Scotia B3H 3P7, Canada. francoise.baylis@dal.ca〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20535185" target="_blank"〉PubMed〈/a〉
    Keywords: Bias (Epidemiology) ; Clinical Trials as Topic/ethics/*methods ; Evidence-Based Medicine/ethics/trends ; Female ; Humans ; Pregnancy ; *Sex Characteristics ; Sex Distribution ; Sex Factors ; Uncertainty
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    Staphylococcus epidermidis Esp inhibits Staphylococcus aureus biofilm formation and nasal colonization (2010)
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    Publication Date: 2010-05-21
    Description: Commensal bacteria are known to inhibit pathogen colonization; however, complex host-microbe and microbe-microbe interactions have made it difficult to gain a detailed understanding of the mechanisms involved in the inhibition of colonization. Here we show that the serine protease Esp secreted by a subset of Staphylococcus epidermidis, a commensal bacterium, inhibits biofilm formation and nasal colonization by Staphylococcus aureus, a human pathogen. Epidemiological studies have demonstrated that the presence of Esp-secreting S. epidermidis in the nasal cavities of human volunteers correlates with the absence of S. aureus. Purified Esp inhibits biofilm formation and destroys pre-existing S. aureus biofilms. Furthermore, Esp enhances the susceptibility of S. aureus in biofilms to immune system components. In vivo studies have shown that Esp-secreting S. epidermidis eliminates S. aureus nasal colonization. These findings indicate that Esp hinders S. aureus colonization in vivo through a novel mechanism of bacterial interference, which could lead to the development of novel therapeutics to prevent S. aureus colonization and infection.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Iwase, Tadayuki -- Uehara, Yoshio -- Shinji, Hitomi -- Tajima, Akiko -- Seo, Hiromi -- Takada, Koji -- Agata, Toshihiko -- Mizunoe, Yoshimitsu -- England -- Nature. 2010 May 20;465(7296):346-9. doi: 10.1038/nature09074.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Bacteriology, The Jikei University School of Medicine, Tokyo, 105-8461 Japan. iwase.tadayuki@jikei.ac.jp〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20485435" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/chemistry/isolation & purification/*metabolism/pharmacology ; Biofilms/*growth & development ; Female ; Humans ; Male ; Nose/*microbiology ; Odds Ratio ; Serine Proteases/chemistry/deficiency/isolation & purification/*metabolism ; Staphylococcal Infections/microbiology/prevention & control/therapy ; Staphylococcus aureus/*growth & development/immunology ; Staphylococcus epidermidis/*enzymology/genetics/*physiology ; Superinfection/immunology/microbiology/prevention & control/therapy ; Young Adult ; beta-Defensins/immunology/pharmacology
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    Korean deaths spark inquiry (2010)
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    Publication Date: 2010-11-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cyranoski, David -- England -- Nature. 2010 Nov 25;468(7323):485. doi: 10.1038/468485a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21107396" target="_blank"〉PubMed〈/a〉
    Keywords: Female ; Humans ; Male ; *Medical Tourism/economics/ethics/legislation & jurisprudence ; Republic of Korea ; Stem Cell Transplantation/*ethics/*legislation & jurisprudence/mortality ; *Travel
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    Production of p53 gene knockout rats by homologous recombination in embryonic stem cells (2010)
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    Publication Date: 2010-08-13
    Description: The use of homologous recombination to modify genes in embryonic stem (ES) cells provides a powerful means to elucidate gene function and create disease models. Application of this technology to engineer genes in rats has not previously been possible because of the absence of germline-competent ES cells in this species. We have recently established authentic rat ES cells. Here we report the generation of gene knockout rats using the ES-cell-based gene targeting technology. We designed a targeting vector to disrupt the tumour suppressor gene p53 (also known as Tp53) in rat ES cells by means of homologous recombination. p53 gene-targeted rat ES cells can be routinely generated. Furthermore, the p53 gene-targeted mutation in the rat ES-cell genome can transmit through the germ line via ES-cell rat chimaeras to create p53 gene knockout rats. The rat is the most widely used animal model in biological research. The establishment of gene targeting technology in rat ES cells, in combination with advances in genomics and the vast amount of research data on physiology and pharmacology in this species, now provide a powerful new platform for the study of human disease.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2937076/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2937076/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Tong, Chang -- Li, Ping -- Wu, Nancy L -- Yan, Youzhen -- Ying, Qi-Long -- 1R01 RR025881/RR/NCRR NIH HHS/ -- R01 OD010926/OD/NIH HHS/ -- R01 RR025881/RR/NCRR NIH HHS/ -- R01 RR025881-01A2/RR/NCRR NIH HHS/ -- England -- Nature. 2010 Sep 9;467(7312):211-3. doi: 10.1038/nature09368. Epub 2010 Aug 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Eli and Edythe Broad Center for Regenerative Medicine and Stem Cell Research at USC, Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20703227" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Cell Culture Techniques ; Embryo, Mammalian/cytology ; Embryonic Stem Cells/*cytology ; Female ; Gene Knockout Techniques/*methods ; *Genes, p53 ; Germ-Line Mutation ; Male ; Mice ; Molecular Sequence Data ; Rats/*genetics ; Rats, Inbred F344 ; Rats, Sprague-Dawley ; Recombination, Genetic
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    ON and OFF pathways in Drosophila motion vision (2010)
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    Publication Date: 2010-11-12
    Description: Motion vision is a major function of all visual systems, yet the underlying neural mechanisms and circuits are still elusive. In the lamina, the first optic neuropile of Drosophila melanogaster, photoreceptor signals split into five parallel pathways, L1-L5. Here we examine how these pathways contribute to visual motion detection by combining genetic block and reconstitution of neural activity in different lamina cell types with whole-cell recordings from downstream motion-sensitive neurons. We find reduced responses to moving gratings if L1 or L2 is blocked; however, reconstitution of photoreceptor input to only L1 or L2 results in wild-type responses. Thus, the first experiment indicates the necessity of both pathways, whereas the second indicates sufficiency of each single pathway. This contradiction can be explained by electrical coupling between L1 and L2, allowing for activation of both pathways even when only one of them receives photoreceptor input. A fundamental difference between the L1 pathway and the L2 pathway is uncovered when blocking L1 or L2 output while presenting moving edges of positive (ON) or negative (OFF) contrast polarity: blocking L1 eliminates the response to moving ON edges, whereas blocking L2 eliminates the response to moving OFF edges. Thus, similar to the segregation of photoreceptor signals in ON and OFF bipolar cell pathways in the vertebrate retina, photoreceptor signals segregate into ON-L1 and OFF-L2 channels in the lamina of Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Joesch, Maximilian -- Schnell, Bettina -- Raghu, Shamprasad Varija -- Reiff, Dierk F -- Borst, Alexander -- England -- Nature. 2010 Nov 11;468(7321):300-4. doi: 10.1038/nature09545.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉MPI for Neurobiology, Department of Systems and Computational Neurobiology, Am Klopferspitz 18, 82152 Martinsried, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21068841" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Calcium Signaling/radiation effects ; Drosophila melanogaster/cytology/metabolism/*physiology/radiation effects ; Female ; Gap Junctions/metabolism/radiation effects ; Light ; Models, Neurological ; *Motion ; Motion Perception/*physiology/radiation effects ; Optic Lobe, Nonmammalian/cytology/physiology/radiation effects ; Photoreceptor Cells, Invertebrate/metabolism/radiation effects ; Vision, Ocular/*physiology/radiation effects ; Visual Pathways/cytology/*physiology/radiation effects
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    The prion protein as a receptor for amyloid-beta (2010)
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    Publication Date: 2010-08-13
    Description: Increased levels of brain amyloid-beta, a secreted peptide cleavage product of amyloid precursor protein (APP), is believed to be critical in the aetiology of Alzheimer's disease. Increased amyloid-beta can cause synaptic depression, reduce the number of spine protrusions (that is, sites of synaptic contacts) and block long-term synaptic potentiation (LTP), a form of synaptic plasticity; however, the receptor through which amyloid-beta produces these synaptic perturbations has remained elusive. Lauren et al. suggested that binding between oligomeric amyloid-beta (a form of amyloid-beta thought to be most active) and the cellular prion protein (PrP(C)) is necessary for synaptic perturbations. Here we show that PrP(C) is not required for amyloid-beta-induced synaptic depression, reduction in spine density, or blockade of LTP; our results indicate that amyloid-beta-mediated synaptic defects do not require PrP(c).〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3057871/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3057871/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessels, Helmut W -- Nguyen, Louis N -- Nabavi, Sadegh -- Malinow, Roberto -- R01 AG032132/AG/NIA NIH HHS/ -- R01 AG032132-14/AG/NIA NIH HHS/ -- R01 AG032132-15/AG/NIA NIH HHS/ -- R01 AG032132-17/AG/NIA NIH HHS/ -- R01 AG032132-18/AG/NIA NIH HHS/ -- R01 MH049159/MH/NIMH NIH HHS/ -- R01 MH049159-09/MH/NIMH NIH HHS/ -- R01 MH049159-21/MH/NIMH NIH HHS/ -- R01 MH049159-22/MH/NIMH NIH HHS/ -- England -- Nature. 2010 Aug 12;466(7308):E3-4; discussion E4-5. doi: 10.1038/nature09217.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neural Circuits and Behavior, 9500 Gilman Drive 0634, University of California at San Diego, La Jolla, California 92093, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20703260" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/metabolism/pathology ; Amyloid beta-Peptides/chemistry/genetics/*metabolism ; Animals ; Learning/physiology ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; PrPC Proteins/deficiency/genetics/*metabolism ; Reproducibility of Results ; Serotonin/metabolism ; Synapses/*metabolism/*pathology ; Synaptic Transmission
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    Maternal Rnf12/RLIM is required for imprinted X-chromosome inactivation in mice (2010)
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    Publication Date: 2010-10-22
    Description: Two forms of X-chromosome inactivation (XCI) ensure the selective silencing of female sex chromosomes during mouse embryogenesis. Imprinted XCI begins with the detection of Xist RNA expression on the paternal X chromosome (Xp) at about the four-cell stage of embryonic development. In the embryonic tissues of the inner cell mass, a random form of XCI occurs in blastocysts that inactivates either Xp or the maternal X chromosome (Xm). Both forms of XCI require the non-coding Xist RNA that coats the inactive X chromosome from which it is expressed. Xist has crucial functions in the silencing of X-linked genes, including Rnf12 (refs 3, 4) encoding the ubiquitin ligase RLIM (RING finger LIM-domain-interacting protein). Here we show, by targeting a conditional knockout of Rnf12 to oocytes where RLIM accumulates to high levels, that the maternal transmission of the mutant X chromosome (Deltam) leads to lethality in female embryos as a result of defective imprinted XCI. We provide evidence that in Deltam female embryos the initial formation of Xist clouds and Xp silencing are inhibited. In contrast, embryonic stem cells lacking RLIM are able to form Xist clouds and silence at least some X-linked genes during random XCI. These results assign crucial functions to the maternal deposit of Rnf12/RLIM for the initiation of imprinted XCI.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2967734/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2967734/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shin, Jongdae -- Bossenz, Michael -- Chung, Young -- Ma, Hong -- Byron, Meg -- Taniguchi-Ishigaki, Naoko -- Zhu, Xiaochun -- Jiao, Baowei -- Hall, Lisa L -- Green, Michael R -- Jones, Stephen N -- Hermans-Borgmeyer, Irm -- Lawrence, Jeanne B -- Bach, Ingolf -- 5 P30 DK32520/DK/NIDDK NIH HHS/ -- DK32520/DK/NIDDK NIH HHS/ -- GM053234/GM/NIGMS NIH HHS/ -- R01 CA131158/CA/NCI NIH HHS/ -- R01 CA131158-04/CA/NCI NIH HHS/ -- R01 GM033977/GM/NIGMS NIH HHS/ -- R01 GM053234/GM/NIGMS NIH HHS/ -- R01CA131158/CA/NCI NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2010 Oct 21;467(7318):977-81. doi: 10.1038/nature09457.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Program in Gene Function and Expression, University of Massachusetts Medical School (UMMS), Worcester, Massachusetts 01605, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20962847" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Congenic ; Blastocyst/metabolism ; Cell Line ; Chromosomes, Mammalian/*genetics ; Embryo Loss/genetics ; Fathers ; Female ; Gene Silencing ; *Genomic Imprinting ; Male ; Mice ; Mice, Transgenic ; *Mothers ; RNA, Long Noncoding ; RNA, Untranslated/genetics ; Repressor Proteins/deficiency/genetics/*metabolism ; Ubiquitin-Protein Ligases ; X Chromosome/*genetics ; X Chromosome Inactivation/*genetics
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    Haematopoietic stem cells derive directly from aortic endothelium during development (2010)
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    Publication Date: 2010-02-16
    Description: A major goal of regenerative medicine is to instruct formation of multipotent, tissue-specific stem cells from induced pluripotent stem cells (iPSCs) for cell replacement therapies. Generation of haematopoietic stem cells (HSCs) from iPSCs or embryonic stem cells (ESCs) is not currently possible, however, necessitating a better understanding of how HSCs normally arise during embryonic development. We previously showed that haematopoiesis occurs through four distinct waves during zebrafish development, with HSCs arising in the final wave in close association with the dorsal aorta. Recent reports have suggested that murine HSCs derive from haemogenic endothelial cells (ECs) lining the aortic floor. Additional in vitro studies have similarly indicated that the haematopoietic progeny of ESCs arise through intermediates with endothelial potential. Here we have used the unique strengths of the zebrafish embryo to image directly the generation of HSCs from the ventral wall of the dorsal aorta. Using combinations of fluorescent reporter transgenes, confocal time-lapse microscopy and flow cytometry, we have identified and isolated the stepwise intermediates as aortic haemogenic endothelium transitions to nascent HSCs. Finally, using a permanent lineage tracing strategy, we demonstrate that the HSCs generated from haemogenic endothelium are the lineal founders of the adult haematopoietic system.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2858358/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2858358/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bertrand, Julien Y -- Chi, Neil C -- Santoso, Buyung -- Teng, Shutian -- Stainier, Didier Y R -- Traver, David -- DK074482/DK/NIDDK NIH HHS/ -- F32DK752433/DK/NIDDK NIH HHS/ -- HL074891/HL/NHLBI NIH HHS/ -- HL54737/HL/NHLBI NIH HHS/ -- R01 DK074482/DK/NIDDK NIH HHS/ -- R01 DK074482-04/DK/NIDDK NIH HHS/ -- England -- Nature. 2010 Mar 4;464(7285):108-11. doi: 10.1038/nature08738. Epub 2010 Feb 14.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cellular and Molecular Medicine, University of California, San Diego, La Jolla, California 92093-0380, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20154733" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Genetically Modified ; Aorta/*cytology/*embryology ; *Cell Differentiation ; *Cell Lineage ; Cell Separation ; Endothelial Cells/cytology ; Endothelium, Vascular/*cytology/embryology ; Female ; Flow Cytometry ; Genes, Reporter/genetics ; Hematopoietic Stem Cells/*cytology ; Male ; Microscopy, Confocal ; Microscopy, Fluorescence ; Transgenes/genetics ; Zebrafish/blood/*embryology
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    Twin study surveys genome for cause of multiple sclerosis (2010)
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    Publication Date: 2010-04-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Katsnelson, Alla -- England -- Nature. 2010 Apr 29;464(7293):1259. doi: 10.1038/4641259a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20428135" target="_blank"〉PubMed〈/a〉
    Keywords: Diseases in Twins/*genetics ; *Environment ; Epigenesis, Genetic/genetics ; Female ; Genetic Predisposition to Disease/genetics ; Genome, Human/*genetics ; Humans ; Multiple Sclerosis/*etiology/*genetics ; Sequence Analysis, DNA ; *Twin Studies as Topic
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    Metabolic disorders: Fathers' nutritional legacy (2010)
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    Publication Date: 2010-10-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Skinner, Michael K -- England -- Nature. 2010 Oct 21;467(7318):922-3. doi: 10.1038/467922a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20962833" target="_blank"〉PubMed〈/a〉
    Keywords: Adiposity/drug effects ; Animals ; Body Weight/drug effects ; DNA Methylation ; Diabetes Mellitus, Type 2/etiology/genetics/pathology/physiopathology ; Diet/*adverse effects ; Dietary Fats/*administration & dosage/*adverse effects ; Epigenesis, Genetic/drug effects ; *Fathers ; Female ; Gene Expression Profiling ; Glucose Intolerance/etiology/pathology/physiopathology ; Insulin/secretion ; Insulin-Secreting Cells/metabolism/*pathology/secretion ; Male ; Obesity/etiology/genetics/pathology/physiopathology ; Paternal Exposure/*adverse effects ; Rats ; Spermatozoa/drug effects/metabolism
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    Promiscuity and the evolutionary transition to complex societies (2010)
    Nature Publishing Group (NPG)
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    Publication Date: 2010-08-21
    Description: Theory predicts that the evolution of cooperative behaviour is favoured by low levels of promiscuity leading to high within-group relatedness. However, in vertebrates, cooperation often occurs between non-relatives and promiscuity rates are among the highest recorded. Here we resolve this apparent inconsistency with a phylogenetic analysis of 267 bird species, demonstrating that cooperative breeding is associated with low promiscuity; that in cooperative species, helping is more common when promiscuity is low; and that intermediate levels of promiscuity favour kin discrimination. Overall, these results suggest that promiscuity is a unifying feature across taxa in explaining transitions to and from cooperative societies.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cornwallis, Charlie K -- West, Stuart A -- Davis, Katie E -- Griffin, Ashleigh S -- England -- Nature. 2010 Aug 19;466(7309):969-72. doi: 10.1038/nature09335.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Edward Grey Institute, Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20725039" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Birds/classification/genetics/*physiology ; *Cooperative Behavior ; Fathers ; Female ; Male ; Models, Biological ; Mothers ; Phylogeny ; Reproduction/genetics/physiology ; Sexual Behavior, Animal/*physiology ; *Siblings
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    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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    Ageing: rushed decisions (2008)
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    Publication Date: 2008-03-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shadan, Sadaf -- England -- Nature. 2008 Mar 6;452(7183):39. doi: 10.1038/452039a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18322520" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Cell Differentiation ; Cell Lineage ; Child, Preschool ; Female ; Humans ; Lamin Type A ; Mesenchymal Stromal Cells/pathology ; Nuclear Proteins/genetics/metabolism ; Progeria/metabolism/*pathology/*physiopathology ; Protein Precursors/genetics/metabolism
    Print ISSN: 0028-0836
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    Live birth in the Devonian period (2008)
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    Publication Date: 2008-05-30
    Description: The extinct placoderm fishes were the dominant group of vertebrates throughout the Middle Palaeozoic era, yet controversy about their relationships within the gnathostomes (jawed vertebrates) is partly due to different interpretations of their reproductive biology. Here we document the oldest record of a live-bearing vertebrate in a new ptyctodontid placoderm, Materpiscis attenboroughi gen. et sp. nov., from the Late Devonian Gogo Formation of Australia (approximately 380 million years ago). The new specimen, remarkably preserved in three dimensions, contains a single, intra-uterine embryo connected by a permineralized umbilical cord. An amorphous crystalline mass near the umbilical cord possibly represents the recrystallized yolk sac. Another ptyctodont from the Gogo Formation, Austroptyctodus gardineri, also shows three small embryos inside it in the same position. Ptyctodontids have already provided the oldest definite evidence for vertebrate copulation, and the new specimens confirm that some placoderms had a remarkably advanced reproductive biology, comparable to that of some modern sharks and rays. The new discovery points to internal fertilization and viviparity in vertebrates as originating earliest within placoderms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Long, John A -- Trinajstic, Kate -- Young, Gavin C -- Senden, Tim -- England -- Nature. 2008 May 29;453(7195):650-2. doi: 10.1038/nature06966.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Museum Victoria, Melbourne, PO Box 666, Melbourne 3001, Australia. jlong@museum.vic.gov.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18509443" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Australia ; Biological Evolution ; Female ; Fishes/classification/*embryology/*physiology ; *Fossils ; History, Ancient ; Microscopy, Electron, Scanning ; Viviparity, Nonmammalian/*physiology
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    T-cell-expressed proprotein convertase furin is essential for maintenance of peripheral immune tolerance (2008)
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    Publication Date: 2008-08-15
    Description: Furin is one of seven proprotein convertase family members that promote proteolytic maturation of proproteins. It is induced in activated T cells and is reported to process a variety of substrates including the anti-inflammatory cytokine transforming growth factor (TGF)-beta1 (refs 2-4), but the non-redundant functions of furin versus other proprotein convertases in T cells are unclear. Here we show that conditional deletion of furin in T cells allowed for normal T-cell development but impaired the function of regulatory and effector T cells, which produced less TGF-beta1. Furin-deficient T regulatory (Treg) cells were less protective in a T-cell transfer colitis model and failed to induce Foxp3 in normal T cells. Additionally, furin-deficient effector cells were inherently over-active and were resistant to suppressive activity of wild-type Treg cells. Thus, our results indicate that furin is indispensable in maintaining peripheral tolerance, which is due, at least in part, to its non-redundant, essential function in regulating TGF-beta1 production. Targeting furin has emerged as a strategy in malignant and infectious disease. Our results suggest that inhibiting furin might activate immune responses, but may result in a breakdown in peripheral tolerance.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2758057/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2758057/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pesu, Marko -- Watford, Wendy T -- Wei, Lai -- Xu, Lili -- Fuss, Ivan -- Strober, Warren -- Andersson, John -- Shevach, Ethan M -- Quezado, Martha -- Bouladoux, Nicolas -- Roebroek, Anton -- Belkaid, Yasmine -- Creemers, John -- O'Shea, John J -- Z99 EY999999/Intramural NIH HHS/ -- England -- Nature. 2008 Sep 11;455(7210):246-50. doi: 10.1038/nature07210.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Immunology and Inflammation Branch, National Institute for Arthritis, Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA. pesum@mail.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18701887" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, CD/immunology ; Antigens, CD4/immunology/metabolism ; Autoimmunity/immunology ; Colitis/immunology ; Furin/deficiency/genetics/*metabolism ; Gene Expression Profiling ; Immune Tolerance/*immunology ; Immunologic Memory/immunology ; Integrin alpha Chains/immunology ; Lymphocyte Activation/immunology ; Mice ; Mice, Inbred C57BL ; T-Lymphocytes/cytology/*enzymology/*immunology ; Thymus Gland/cytology/immunology ; Transforming Growth Factor beta1/biosynthesis/genetics/immunology
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    Stem cells: stuck in New Jersey (2008)
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    Publication Date: 2008-02-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wadman, Meredith -- England -- Nature. 2008 Feb 7;451(7179):622-6. doi: 10.1038/451622a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18256640" target="_blank"〉PubMed〈/a〉
    Keywords: Academies and Institutes/economics/legislation & jurisprudence ; Female ; Humans ; New Jersey ; *Politics ; Research Embryo Creation/economics/legislation & jurisprudence ; *State Government ; *Stem Cells
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    The cost of silence? (2008)
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    Publication Date: 2008-12-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉England -- Nature. 2008 Dec 4;456(7222):545. doi: 10.1038/456545a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19052574" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/drug therapy/*epidemiology/*mortality ; Anti-HIV Agents/*supply & distribution ; Child ; *Federal Government ; Female ; Humans ; Politics ; Pregnancy ; *Public Policy ; South Africa/epidemiology
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    Ultrasonic frogs show hyperacute phonotaxis to female courtship calls (2008)
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    Publication Date: 2008-05-13
    Description: Sound communication plays a vital role in frog reproduction, in which vocal advertisement is generally the domain of males. Females are typically silent, but in a few anuran species they can produce a feeble reciprocal call or rapping sounds during courtship. Males of concave-eared torrent frogs (Odorrana tormota) have demonstrated ultrasonic communication capacity. Although females of O. tormota have an unusually well-developed vocal production system, it is unclear whether or not they produce calls or are only passive partners in a communication system dominated by males. Here we show that before ovulation, gravid females of O. tormota emit calls that are distinct from males' advertisement calls, having higher fundamental frequencies and harmonics and shorter call duration. In the field and in a quiet, darkened indoor arena, these female calls evoke vocalizations and extraordinarily precise positive phonotaxis (a localization error of 〈1 degrees ), rivalling that of vertebrates with the highest localization acuity (barn owls, dolphins, elephants and humans). The localization accuracy of O. tormota is remarkable in light of their small head size (interaural distance of 〈1 cm), and suggests an additional selective advantage of high-frequency hearing beyond the ability to avoid masking by low-frequency background noise.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shen, Jun-Xian -- Feng, Albert S -- Xu, Zhi-Min -- Yu, Zu-Lin -- Arch, Victoria S -- Yu, Xin-Jian -- Narins, Peter M -- England -- Nature. 2008 Jun 12;453(7197):914-6. doi: 10.1038/nature06719. Epub 2008 May 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. shenjx@sun5.ibp.ac.cn〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18469804" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; China ; *Courtship ; Female ; Humans ; Male ; Motor Activity/*physiology ; Ranidae/*physiology ; *Sex Characteristics ; Sound ; *Ultrasonics ; Vocalization, Animal/*physiology
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    Pleiotropic scaling of gene effects and the 'cost of complexity' (2008)
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    Publication Date: 2008-03-28
    Description: As perceived by Darwin, evolutionary adaptation by the processes of mutation and selection is difficult to understand for complex features that are the product of numerous traits acting in concert, for example the eye or the apparatus of flight. Typically, mutations simultaneously affect multiple phenotypic characters. This phenomenon is known as pleiotropy. The impact of pleiotropy on evolution has for decades been the subject of formal analysis. Some authors have suggested that pleiotropy can impede evolutionary progress (a so-called 'cost of complexity'). The plausibility of various phenomena attributed to pleiotropy depends on how many traits are affected by each mutation and on our understanding of the correlation between the number of traits affected by each gene substitution and the size of mutational effects on individual traits. Here we show, by studying pleiotropy in mice with the use of quantitative trait loci (QTLs) affecting skeletal characters, that most QTLs affect a relatively small subset of traits and that a substitution at a QTL has an effect on each trait that increases with the total number of traits affected. This suggests that evolution of higher organisms does not suffer a 'cost of complexity' because most mutations affect few traits and the size of the effects does not decrease with pleiotropy.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wagner, Gunter P -- Kenney-Hunt, Jane P -- Pavlicev, Mihaela -- Peck, Joel R -- Waxman, David -- Cheverud, James M -- England -- Nature. 2008 Mar 27;452(7186):470-2. doi: 10.1038/nature06756.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, Yale University, New Haven, Connecticut 06520-8106, USA. gunter.wagner@yale.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18368117" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Body Size/*genetics ; Body Weight/genetics ; Crosses, Genetic ; Female ; Male ; Mice ; Mice, Inbred Strains ; *Models, Genetic ; Mutation/*genetics ; Phenotype ; Quantitative Trait Loci/*genetics ; Selection, Genetic ; *Skeleton
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    Lab disinfectant harms mouse fertility. Patricia Hunt interviewed by Brendan Maher (2008)
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    Publication Date: 2008-06-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hunt, Patricia -- England -- Nature. 2008 Jun 19;453(7198):964. doi: 10.1038/453964a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18563110" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Laboratory/abnormalities ; Benzalkonium Compounds/*toxicity ; Benzhydryl Compounds ; Disinfectants/chemistry/*toxicity ; Environmental Exposure ; Female ; Fertility/*drug effects ; Fetal Death/chemically induced ; *Housing, Animal ; *Laboratories ; Male ; Mice ; Phenols ; Pregnancy ; Quaternary Ammonium Compounds/*toxicity
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    The changing face of HIV in China (2008)
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    Publication Date: 2008-10-04
    Description: HIV has advanced from high-risk groups such as intravenous drug users to some in the general population, according to comprehensive new data from the south of China. What needs to be done to halt its spread?〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lu, Lin -- Jia, Manhong -- Ma, Yanling -- Yang, Li -- Chen, Zhiwei -- Ho, David D -- Jiang, Yan -- Zhang, Linqi -- England -- Nature. 2008 Oct 2;455(7213):609-11. doi: 10.1038/455609a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Yunnan Center for Disease Control and Prevention, Yunnan, People's Republic of China.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18833270" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; China/epidemiology ; Ethnic Groups/statistics & numerical data ; Female ; HIV Infections/*epidemiology/prevention & control/transmission/virology ; HIV-1/genetics ; Humans ; Male ; Pregnancy ; Prevalence ; Prostitution/statistics & numerical data ; Sentinel Surveillance ; Sex Ratio ; Substance Abuse, Intravenous/epidemiology
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    Complex speciation of humans and chimpanzees (2008)
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    Publication Date: 2008-03-14
    Description: Genetic data from two or more species provide information about the process of speciation. In their analysis of DNA from humans, chimpanzees, gorillas, orangutans and macaques (HCGOM), Patterson et al. suggest that the apparently short divergence time between humans and chimpanzees on the X chromosome is explained by a massive interspecific hybridization event in the ancestry of these two species. However, Patterson et al. do not statistically test their own null model of simple speciation before concluding that speciation was complex, and--even if the null model could be rejected--they do not consider other explanations of a short divergence time on the X chromosome. These include natural selection on the X chromosome in the common ancestor of humans and chimpanzees, changes in the ratio of male-to-female mutation rates over time, and less extreme versions of divergence with gene flow (see ref. 2, for example). I therefore believe that their claim of hybridization is unwarranted.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wakeley, John -- England -- Nature. 2008 Mar 13;452(7184):E3-4; discussion E4. doi: 10.1038/nature06805.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, Massachusetts 02138, USA. wakeley@fas.harvard.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18337768" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosomes, Mammalian/genetics ; Female ; *Genetic Speciation ; Humans ; Male ; *Models, Genetic ; Mutagenesis/genetics ; Pan troglodytes/*genetics ; Phylogeny ; Reproducibility of Results ; Selection, Genetic ; Sex Characteristics ; Time Factors ; X Chromosome/genetics
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    Make secondary education universal (2008)
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    Publication Date: 2008-12-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, Joel E -- England -- Nature. 2008 Dec 4;456(7222):572-3. doi: 10.1038/456572a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Rockefeller University, 1230 York Avenue, New York 10065, USA. cohen@rockefeller.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19052604" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Child Mortality/trends ; *Developing Countries ; Education/economics/*organization & administration/statistics & numerical ; data/*trends ; Female ; Humans ; Population Growth
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    Evolutionary genetics: who shouldn't be your daddy (2008)
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    Publication Date: 2008-02-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Phillips, Patrick C -- England -- Nature. 2008 Feb 7;451(7179):640-1. doi: 10.1038/451640a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18256655" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biological Evolution ; Caenorhabditis elegans/classification/embryology/*genetics/*physiology ; Chromosomes/genetics ; Crosses, Genetic ; Disorders of Sex Development ; Embryo Loss/genetics ; Embryo, Nonmammalian/embryology ; Female ; Genetic Markers/genetics ; Great Britain ; Hawaii ; Hybridization, Genetic ; Male ; Reproduction/genetics/physiology
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    Suppression of Myc oncogenic activity by ribosomal protein haploinsufficiency (2008)
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    Publication Date: 2008-11-18
    Description: The Myc oncogene regulates the expression of several components of the protein synthetic machinery, including ribosomal proteins, initiation factors of translation, RNA polymerase III and ribosomal DNA. Whether and how increasing the cellular protein synthesis capacity affects the multistep process leading to cancer remains to be addressed. Here we use ribosomal protein heterozygote mice as a genetic tool to restore increased protein synthesis in Emu-Myc/+ transgenic mice to normal levels, and show that the oncogenic potential of Myc in this context is suppressed. Our findings demonstrate that the ability of Myc to increase protein synthesis directly augments cell size and is sufficient to accelerate cell cycle progression independently of known cell cycle targets transcriptionally regulated by Myc. In addition, when protein synthesis is restored to normal levels, Myc-overexpressing precancerous cells are more efficiently eliminated by programmed cell death. Our findings reveal a new mechanism that links increases in general protein synthesis rates downstream of an oncogenic signal to a specific molecular impairment in the modality of translation initiation used to regulate the expression of selective messenger RNAs. We show that an aberrant increase in cap-dependent translation downstream of Myc hyperactivation specifically impairs the translational switch to internal ribosomal entry site (IRES)-dependent translation that is required for accurate mitotic progression. Failure of this translational switch results in reduced mitotic-specific expression of the endogenous IRES-dependent form of Cdk11 (also known as Cdc2l and PITSLRE), which leads to cytokinesis defects and is associated with increased centrosome numbers and genome instability in Emu-Myc/+ mice. When accurate translational control is re-established in Emu-Myc/+ mice, genome instability is suppressed. Our findings demonstrate how perturbations in translational control provide a highly specific outcome for gene expression, genome stability and cancer initiation that have important implications for understanding the molecular mechanism of cancer formation at the post-genomic level.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2880952/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2880952/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barna, Maria -- Pusic, Aya -- Zollo, Ornella -- Costa, Maria -- Kondrashov, Nadya -- Rego, Eduardo -- Rao, Pulivarthi H -- Ruggero, Davide -- R01 HL085572/HL/NHLBI NIH HHS/ -- R01 HL085572-03/HL/NHLBI NIH HHS/ -- England -- Nature. 2008 Dec 18;456(7224):971-5. doi: 10.1038/nature07449. Epub 2008 Nov 16.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry & Biophysics, University of California San Francisco, Rock Hall Room 384C, 1550 Fourth Street, San Francisco, California 94158-2517, USA. maria.barna@ucsf.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19011615" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; B-Lymphocytes/cytology/metabolism/pathology ; Cell Division ; Cell Size ; Cells, Cultured ; Cytokinesis ; Gene Expression Regulation, Neoplastic ; Genes, myc/*genetics ; Genomic Instability ; Heterozygote ; Lymphoma/genetics/pathology ; Mice ; Mice, Inbred C57BL ; Mitosis ; Oncogene Protein p55(v-myc)/*genetics/*metabolism ; Precancerous Conditions/metabolism/pathology ; *Protein Biosynthesis ; Protein-Serine-Threonine Kinases/metabolism ; Ribosomal Proteins/*deficiency/*genetics
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    GILT is a critical host factor for Listeria monocytogenes infection (2008)
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    Details
    Publication Date: 2008-09-26
    Description: Listeria monocytogenes is a gram-positive, intracellular, food-borne pathogen that can cause severe illness in humans and animals. On infection, it is actively phagocytosed by macrophages; it then escapes from the phagosome, replicates in the cytosol, and subsequently spreads from cell to cell by a non-lytic mechanism driven by actin polymerization. Penetration of the phagosomal membrane is initiated by the secreted haemolysin listeriolysin O (LLO), which is essential for vacuolar escape in vitro and for virulence in animal models of infection. Reduction is required to activate the lytic activity of LLO in vitro, and we show here that reduction by the enzyme gamma-interferon-inducible lysosomal thiol reductase (GILT, also called Ifi30) is responsible for the activation of LLO in vivo. GILT is a soluble thiol reductase expressed constitutively within the lysosomes of antigen-presenting cells, and it accumulates in macrophage phagosomes as they mature into phagolysosomes. The enzyme is delivered by a mannose-6-phosphate receptor-dependent mechanism to the endocytic pathway, where amino- and carboxy-terminal pro-peptides are cleaved to generate a 30-kDa mature enzyme. The active site of GILT contains two cysteine residues in a CXXC motif that catalyses the reduction of disulphide bonds. Mice lacking GILT are deficient in generating major histocompatibility complex class-II-restricted CD4(+) T-cell responses to protein antigens that contain disulphide bonds. Here we show that these mice are resistant to L. monocytogenes infection. Replication of the organism in GILT-negative macrophages, or macrophages expressing an enzymatically inactive GILT mutant, is impaired because of delayed escape from the phagosome. GILT activates LLO within the phagosome by the thiol reductase mechanism shared by members of the thioredoxin family. In addition, purified GILT activates recombinant LLO, facilitating membrane permeabilization and red blood cell lysis. The data show that GILT is a critical host factor that facilitates L. monocytogenes infection.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2775488/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2775488/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Singh, Reshma -- Jamieson, Amanda -- Cresswell, Peter -- AI023081/AI/NIAID NIH HHS/ -- R37 AI023081/AI/NIAID NIH HHS/ -- R37 AI023081-24/AI/NIAID NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2008 Oct 30;455(7217):1244-7. doi: 10.1038/nature07344. Epub 2008 Sep 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunobiology, Yale University School of Medicine, 300 Cedar Street, New Haven, Connecticut 06250-8011, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18815593" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Toxins/metabolism ; Cell-Free System ; Heat-Shock Proteins/metabolism ; Hemolysin Proteins/metabolism ; Hemolysis ; Listeria monocytogenes/growth & development/*physiology ; Listeriosis/*metabolism/*microbiology ; Macrophages/cytology/metabolism/microbiology ; Mice ; Mice, Inbred C57BL ; Oxidation-Reduction ; Oxidoreductases/chemistry/deficiency/genetics/*metabolism ; Phagocytosis ; Phagosomes/microbiology ; Thioredoxins/metabolism ; Virulence Factors/metabolism
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    Making a difference (2008)
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    Publication Date: 2008-10-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Basu, Paroma -- Qiu, Jane -- Powell, Kendall -- England -- Nature. 2008 Oct 16;455(7215):1002-3. doi: 10.1038/nj7215-1002a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18938259" target="_blank"〉PubMed〈/a〉
    Keywords: Bottle Feeding/statistics & numerical data ; Breast Feeding/statistics & numerical data ; China ; Environmental Pollution/analysis ; Female ; Humans ; India/epidemiology ; *Organizations/organization & administration/statistics & numerical data ; *Research/manpower ; *Research Personnel ; Reward
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    REST maintains self-renewal and pluripotency of embryonic stem cells (2008)
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    Publication Date: 2008-03-26
    Description: The neuronal repressor REST (RE1-silencing transcription factor; also called NRSF) is expressed at high levels in mouse embryonic stem (ES) cells, but its role in these cells is unclear. Here we show that REST maintains self-renewal and pluripotency in mouse ES cells through suppression of the microRNA miR-21. We found that, as with known self-renewal markers, the level of REST expression is much higher in self-renewing mouse ES cells than in differentiating mouse ES (embryoid body, EB) cells. Heterozygous deletion of Rest (Rest+/-) and its short-interfering-RNA-mediated knockdown in mouse ES cells cause a loss of self-renewal-even when these cells are grown under self-renewal conditions-and lead to the expression of markers specific for multiple lineages. Conversely, exogenously added REST maintains self-renewal in mouse EB cells. Furthermore, Rest+/- mouse ES cells cultured under self-renewal conditions express substantially reduced levels of several self-renewal regulators, including Oct4 (also called Pou5f1), Nanog, Sox2 and c-Myc, and exogenously added REST in mouse EB cells maintains the self-renewal phenotypes and expression of these self-renewal regulators. We also show that in mouse ES cells, REST is bound to the gene chromatin of a set of miRNAs that potentially target self-renewal genes. Whereas mouse ES cells and mouse EB cells containing exogenously added REST express lower levels of these miRNAs, EB cells, Rest+/- ES cells and ES cells treated with short interfering RNA targeting Rest express higher levels of these miRNAs. At least one of these REST-regulated miRNAs, miR-21, specifically suppresses the self-renewal of mouse ES cells, corresponding to the decreased expression of Oct4, Nanog, Sox2 and c-Myc. Thus, REST is a newly discovered element of the interconnected regulatory network that maintains the self-renewal and pluripotency of mouse ES cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2830094/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2830094/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Singh, Sanjay K -- Kagalwala, Mohamedi N -- Parker-Thornburg, Jan -- Adams, Henry -- Majumder, Sadhan -- CA81255/CA/NCI NIH HHS/ -- CA97124/CA/NCI NIH HHS/ -- P30 CA016672/CA/NCI NIH HHS/ -- R01 CA081255/CA/NCI NIH HHS/ -- R01 CA081255-10/CA/NCI NIH HHS/ -- R01 CA097124/CA/NCI NIH HHS/ -- R01 CA097124-07/CA/NCI NIH HHS/ -- England -- Nature. 2008 May 8;453(7192):223-7. doi: 10.1038/nature06863. Epub 2008 Mar 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cancer Genetics, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18362916" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biomarkers ; Cell Differentiation ; Cell Line ; Cell Lineage ; Cell Proliferation ; Chromatin/genetics/metabolism ; Embryonic Stem Cells/*cytology/*metabolism ; Mice ; Mice, Inbred C57BL ; Pluripotent Stem Cells/*cytology/*metabolism ; Repressor Proteins/genetics/*metabolism ; Transcription Factors/deficiency/genetics/*metabolism
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    Science and Music: the ear of the beholder (2008)
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    Publication Date: 2008-07-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sloboda, John -- England -- Nature. 2008 Jul 3;454(7200):32-3. doi: 10.1038/454032a.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Law, Politics and Justice, Keele University, Newcastle, Staffordshire ST5 5BG, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18596790" target="_blank"〉PubMed〈/a〉
    Keywords: Acoustic Stimulation ; Culture ; Female ; Humans ; Music/*psychology ; Research/trends ; *Science
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    STING is an endoplasmic reticulum adaptor that facilitates innate immune signalling (2008)
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    Publication Date: 2008-08-30
    Description: The cellular innate immune system is essential for recognizing pathogen infection and for establishing effective host defence. But critical molecular determinants responsible for facilitating an appropriate immune response-following infection with DNA and RNA viruses, for example-remain to be identified. Here we report the identification, following expression cloning, of a molecule (STING; stimulator of interferon genes) that appears essential for effective innate immune signalling processes. It comprises five putative transmembrane regions, predominantly resides in the endoplasmic reticulum and is able to activate both NF-kappaB and IRF3 transcription pathways to induce expression of type I interferon (IFN-alpha and IFN-beta ) and exert a potent anti-viral state following expression. In contrast, loss of STING rendered murine embryonic fibroblasts extremely susceptible to negative-stranded virus infection, including vesicular stomatitis virus. Further, STING ablation abrogated the ability of intracellular B-form DNA, as well as members of the herpesvirus family, to induce IFN-beta, but did not significantly affect the Toll-like receptor (TLR) pathway. Yeast two-hybrid and co-immunoprecipitation studies indicated that STING interacts with RIG-I and with SSR2 (also known as TRAPbeta), which is a member of the translocon-associated protein (TRAP) complex required for protein translocation across the endoplasmic reticulum membrane following translation. Ablation by RNA interference of both TRAPbeta and translocon adaptor SEC61beta was subsequently found to inhibit STING's ability to stimulate expression of IFN-beta. Thus, as well as identifying a regulator of innate immune signalling, our results imply a potential role for the translocon in innate signalling pathways activated by select viruses as well as intracellular DNA.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2804933/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2804933/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ishikawa, Hiroki -- Barber, Glen N -- R01 AI079336/AI/NIAID NIH HHS/ -- R01 AI079336-01/AI/NIAID NIH HHS/ -- England -- Nature. 2008 Oct 2;455(7213):674-8. doi: 10.1038/nature07317. Epub 2008 Aug 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine and Sylvester Comprehensive Cancer Center, University of Miami School of Medicine, Miami, Florida 33136, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18724357" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Endoplasmic Reticulum/*metabolism ; Fibroblasts ; Humans ; Immunity, Innate/*immunology ; Interferons/biosynthesis/immunology ; Membrane Proteins/chemistry/genetics/*metabolism ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; *Signal Transduction
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    Type IV collagens regulate BMP signalling in Drosophila (2008)
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    Publication Date: 2008-08-15
    Description: Dorsal-ventral patterning in vertebrate and invertebrate embryos is mediated by a conserved system of secreted proteins that establishes a bone morphogenetic protein (BMP) gradient. Although the Drosophila embryonic Decapentaplegic (Dpp) gradient has served as a model to understand how morphogen gradients are established, no role for the extracellular matrix has been previously described. Here we show that type IV collagen extracellular matrix proteins bind Dpp and regulate its signalling in both the Drosophila embryo and ovary. We provide evidence that the interaction between Dpp and type IV collagen augments Dpp signalling in the embryo by promoting gradient formation, yet it restricts the signalling range in the ovary through sequestration of the Dpp ligand. Together, these results identify a critical function of type IV collagens in modulating Dpp in the extracellular space during Drosophila development. On the basis of our findings that human type IV collagen binds BMP4, we predict that this role of type IV collagens will be conserved.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Xiaomeng -- Harris, Robin E -- Bayston, Laura J -- Ashe, Hilary L -- BBS/B/11672/Biotechnology and Biological Sciences Research Council/United Kingdom -- Biotechnology and Biological Sciences Research Council/United Kingdom -- England -- Nature. 2008 Sep 4;455(7209):72-7. doi: 10.1038/nature07214.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Faculty of Life Sciences, The University of Manchester, Oxford Road, Manchester M13 9PT, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18701888" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Body Patterning ; Bone Morphogenetic Proteins/genetics/*metabolism ; Cell Count ; Collagen Type IV/genetics/*metabolism ; Drosophila Proteins/genetics/*metabolism ; Drosophila melanogaster/embryology/genetics/*metabolism ; Female ; Male ; Ovary/cytology/metabolism ; Protein Binding ; *Signal Transduction ; Transforming Growth Factor beta/genetics/metabolism
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    PML targeting eradicates quiescent leukaemia-initiating cells (2008)
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    Publication Date: 2008-05-13
    Description: The existence of a small population of 'cancer-initiating cells' responsible for tumour maintenance has been firmly demonstrated in leukaemia. This concept is currently being tested in solid tumours. Leukaemia-initiating cells, particularly those that are in a quiescent state, are thought to be resistant to chemotherapy and targeted therapies, resulting in disease relapse. Chronic myeloid leukaemia is a paradigmatic haematopoietic stem cell disease in which the leukaemia-initiating-cell pool is not eradicated by current therapy, leading to disease relapse on drug discontinuation. Here we define the critical role of the promyelocytic leukaemia protein (PML) tumour suppressor in haematopoietic stem cell maintenance, and present a new therapeutic approach for targeting quiescent leukaemia-initiating cells and possibly cancer-initiating cells by pharmacological inhibition of PML.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2712082/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2712082/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ito, Keisuke -- Bernardi, Rosa -- Morotti, Alessandro -- Matsuoka, Sahoko -- Saglio, Giuseppe -- Ikeda, Yasuo -- Rosenblatt, Jacalyn -- Avigan, David E -- Teruya-Feldstein, Julie -- Pandolfi, Pier Paolo -- K99 CA139009/CA/NCI NIH HHS/ -- R00 CA139009/CA/NCI NIH HHS/ -- R37 CA071692/CA/NCI NIH HHS/ -- R37 CA071692-12/CA/NCI NIH HHS/ -- England -- Nature. 2008 Jun 19;453(7198):1072-8. doi: 10.1038/nature07016. Epub 2008 May 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Genetics Program, Beth Israel Deaconess Cancer Center, Department of Medicine, Harvard Medical School, New Research Building, 330 Brookline Avenue, Boston, Massachusetts 02215, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18469801" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Arsenicals/pharmacology/therapeutic use ; Cell Line ; Coculture Techniques ; Female ; Gene Expression Regulation, Neoplastic ; Hematopoietic Stem Cells/pathology ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive/metabolism/*pathology ; Male ; Mice ; Mice, Inbred C57BL ; Neoplastic Stem Cells/metabolism/*pathology ; Nuclear Proteins/antagonists & inhibitors/deficiency/genetics/*metabolism ; Oxides/pharmacology/therapeutic use ; Recurrence ; Regeneration ; Transcription Factors/antagonists & inhibitors/deficiency/genetics/*metabolism ; Tumor Suppressor Proteins/antagonists & ; inhibitors/deficiency/genetics/*metabolism
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    Associative learning of social value (2008)
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    Publication Date: 2008-11-14
    Description: Our decisions are guided by information learnt from our environment. This information may come via personal experiences of reward, but also from the behaviour of social partners. Social learning is widely held to be distinct from other forms of learning in its mechanism and neural implementation; it is often assumed to compete with simpler mechanisms, such as reward-based associative learning, to drive behaviour. Recently, neural signals have been observed during social exchange reminiscent of signals seen in studies of associative learning. Here we demonstrate that social information may be acquired using the same associative processes assumed to underlie reward-based learning. We find that key computational variables for learning in the social and reward domains are processed in a similar fashion, but in parallel neural processing streams. Two neighbouring divisions of the anterior cingulate cortex were central to learning about social and reward-based information, and for determining the extent to which each source of information guides behaviour. When making a decision, however, the information learnt using these parallel streams was combined within ventromedial prefrontal cortex. These findings suggest that human social valuation can be realized by means of the same associative processes previously established for learning other, simpler, features of the environment.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2605577/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2605577/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Behrens, Timothy E J -- Hunt, Laurence T -- Woolrich, Mark W -- Rushworth, Matthew F S -- G0501316/Medical Research Council/United Kingdom -- G0501316(75487)/Medical Research Council/United Kingdom -- G0600994/Medical Research Council/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2008 Nov 13;456(7219):245-9. doi: 10.1038/nature07538.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉FMRIB Centre, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DU, UK. behrens@fmrib.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19005555" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Female ; Humans ; Learning/*physiology ; Male ; Middle Aged ; Models, Statistical ; Prefrontal Cortex/physiology ; Reward ; *Social Behavior
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    Population biology: Case of the absent lemmings (2008)
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    Publication Date: 2008-11-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coulson, Tim -- Malo, Aurelio -- England -- Nature. 2008 Nov 6;456(7218):43-4. doi: 10.1038/456043a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18987726" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Arvicolinae/*physiology ; *Ecosystem ; Female ; *Greenhouse Effect ; History, 20th Century ; History, 21st Century ; Norway ; Population Dynamics ; Seasons ; Snow ; Temperature
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    Glycogen synthase kinase 3 in MLL leukaemia maintenance and targeted therapy (2008)
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    Publication Date: 2008-09-23
    Description: Glycogen synthase kinase 3 (GSK3) is a multifunctional serine/threonine kinase that participates in numerous signalling pathways involved in diverse physiological processes. Several of these pathways are implicated in disease pathogenesis, which has prompted efforts to develop GSK3-specific inhibitors for therapeutic applications. However, before now, there has been no strong rationale for targeting GSK3 in malignancies. Here we report pharmacological, physiological and genetic studies that demonstrate an oncogenic requirement for GSK3 in the maintenance of a specific subtype of poor prognosis human leukaemia, genetically defined by mutations of the MLL proto-oncogene. In contrast to its previously characterized roles in suppression of neoplasia-associated signalling pathways, GSK3 paradoxically supports MLL leukaemia cell proliferation and transformation by a mechanism that ultimately involves destabilization of the cyclin-dependent kinase inhibitor p27(Kip1). Inhibition of GSK3 in a preclinical murine model of MLL leukaemia provides promising evidence of efficacy and earmarks GSK3 as a candidate cancer drug target.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4084721/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4084721/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wang, Zhong -- Smith, Kevin S -- Murphy, Mark -- Piloto, Obdulio -- Somervaille, Tim C P -- Cleary, Michael L -- CA116606/CA/NCI NIH HHS/ -- CA55029/CA/NCI NIH HHS/ -- R01 CA055029/CA/NCI NIH HHS/ -- R01 CA116606/CA/NCI NIH HHS/ -- England -- Nature. 2008 Oct 30;455(7217):1205-9. doi: 10.1038/nature07284. Epub 2008 Sep 17.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Stanford University School of Medicine, Stanford, California 94305, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18806775" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Division ; Cell Line, Transformed ; Cell Line, Tumor ; Cell Proliferation ; *Cell Transformation, Neoplastic ; Cyclin-Dependent Kinase Inhibitor p27 ; Disease Models, Animal ; G1 Phase ; Glycogen Synthase Kinase 3/antagonists & ; inhibitors/deficiency/genetics/*metabolism ; Histone-Lysine N-Methyltransferase ; Humans ; Intracellular Signaling Peptides and Proteins/antagonists & inhibitors/metabolism ; Isoenzymes/metabolism ; Leukemia, Lymphoid/*drug therapy/enzymology/metabolism/*pathology ; Mice ; Mice, Inbred C57BL ; Mice, SCID ; Myeloid Progenitor Cells/enzymology/metabolism/pathology ; Myeloid-Lymphoid Leukemia Protein/*metabolism ; Precursor Cells, B-Lymphoid/enzymology/metabolism/pathology
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    The earliest thymic progenitors for T cells possess myeloid lineage potential (2008)
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    Publication Date: 2008-04-11
    Description: There exists controversy over the nature of haematopoietic progenitors of T cells. Most T cells develop in the thymus, but the lineage potential of thymus-colonizing progenitors is unknown. One approach to resolving this question is to determine the lineage potentials of the earliest thymic progenitors (ETPs). Previous work has shown that ETPs possess T and natural killer lymphoid potentials, and rare subsets of ETPs also possess B lymphoid potential, suggesting an origin from lymphoid-restricted progenitor cells. However, whether ETPs also possess myeloid potential is unknown. Here we show that nearly all ETPs in adult mice possess both T and myeloid potential in clonal assays. The existence of progenitors possessing T and myeloid potential within the thymus is incompatible with the current dominant model of haematopoiesis, in which T cells are proposed to arise from lymphoid-. Our results indicate that alternative models for lineage commitment during haematopoiesis must be considered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bell, J Jeremiah -- Bhandoola, Avinash -- England -- Nature. 2008 Apr 10;452(7188):764-7. doi: 10.1038/nature06840.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Laboratory Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18401411" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Cell Lineage ; Cells, Cultured ; Coculture Techniques ; Dendritic Cells/cytology ; Female ; Granulocytes/cytology ; *Hematopoiesis ; Hematopoietic Stem Cells/*cytology/metabolism ; Macrophages/cytology ; Mice ; Models, Biological ; Myeloid Cells/*cytology/metabolism ; Stromal Cells/cytology ; T-Lymphocytes/*cytology/metabolism ; Thymus Gland/*cytology
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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    Egg shortage hits race to clone human stem cells (2008)
    Nature Publishing Group (NPG)
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    Publication Date: 2008-06-13
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Maher, Brendan -- England -- Nature. 2008 Jun 12;453(7197):828-9. doi: 10.1038/453828a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18548027" target="_blank"〉PubMed〈/a〉
    Keywords: Embryonic Stem Cells/*cytology ; Female ; Humans ; Oocyte Donation/*economics/ethics/*legislation & jurisprudence/statistics & ; numerical data ; Ovum/cytology ; *Research Embryo Creation/economics/ethics/legislation & jurisprudence ; *State Government ; United States
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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    A deadenylation negative feedback mechanism governs meiotic metaphase arrest (2008)
    Nature Publishing Group (NPG)
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    Publication Date: 2008-04-04
    Description: In vertebrate oocytes, meiotic progression is driven by the sequential translational activation of maternal messenger RNAs stored in the cytoplasm. This activation is mainly induced by the cytoplasmic elongation of their poly(A) tails, which is mediated by the cytoplasmic polyadenylation element (CPE) present in their 3' untranslated regions. In Xenopus oocytes, sequential phase-specific translation of CPE-regulated mRNAs is required to activate the maturation-promoting factor, which in turn mediates entry into the two consecutive meiotic metaphases (MI and MII). Here we report a genome-wide functional screening to identify previously unknown mRNAs cytoplasmically polyadenylated at meiotic phase transitions. A significant fraction of transcripts containing, in addition to CPEs, (A + U)-rich element (ARE) sequences (characteristic of mRNAs regulated by deadenylation) were identified. Among these is the mRNA encoding C3H-4, an ARE-binding protein that we find to accumulate in MI and the ablation of which induces meiotic arrest. Our results suggest that C3H-4 recruits the CCR4 deadenylase complex to ARE-containing mRNAs and this, in turn, causes shortening of poly(A) tails. We also show that the opposing activities of the CPEs and the AREs define the precise activation times of the mRNAs encoding the anaphase-promoting complex inhibitors Emi1 and Emi2 during distinct phases of the meiotic cycle. Taken together, our results show that an 'early' wave of cytoplasmic polyadenylation activates a negative feedback loop by activating the synthesis of C3H-4, which in turn would recruit the deadenylase complex to mRNAs containing both CPEs and AREs. This negative feedback loop is required to exit from metaphase into interkinesis and for meiotic progression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Belloc, Eulalia -- Mendez, Raul -- England -- Nature. 2008 Apr 24;452(7190):1017-21. doi: 10.1038/nature06809. Epub 2008 Apr 2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Centre for Genomic Regulation (CRG), Pompeu Fabra University (UPF), C/Dr Aiguader 88, 08003, Barcelona, Spain.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18385675" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Cycle Proteins/genetics ; F-Box Proteins/genetics ; Feedback, Physiological/*genetics ; Female ; Genome/genetics ; *Meiosis/genetics ; *Metaphase ; Oocytes/*cytology/metabolism ; Phosphoproteins/biosynthesis/genetics/metabolism ; *Polyadenylation/genetics ; Protein Biosynthesis/genetics ; RNA, Messenger/genetics/metabolism ; Transcription Factors/metabolism ; Xenopus Proteins/biosynthesis/genetics/metabolism ; Xenopus laevis ; mRNA Cleavage and Polyadenylation Factors/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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