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  • 1
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    Developmental biology: A cellular view of regeneration (2009)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2009-07-03
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanchez Alvarado, Alejandro -- England -- Nature. 2009 Jul 2;460(7251):39-40. doi: 10.1038/460039a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19571870" target="_blank"〉PubMed〈/a〉
    Keywords: Ambystoma/embryology/*physiology ; Animals ; Cell Differentiation/radiation effects ; Cell Lineage/*physiology/radiation effects ; Extremities/*growth & development/innervation ; Organ Specificity ; Regeneration/*physiology
    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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  • 2
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    The insect nephrocyte is a podocyte-like cell with a filtration slit diaphragm (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-10-31
    Description: The nephron is the basic structural and functional unit of the vertebrate kidney. It is composed of a glomerulus, the site of ultrafiltration, and a renal tubule, along which the filtrate is modified. Although widely regarded as a vertebrate adaptation, 'nephron-like' features can be found in the excretory systems of many invertebrates, raising the possibility that components of the vertebrate excretory system were inherited from their invertebrate ancestors. Here we show that the insect nephrocyte has remarkable anatomical, molecular and functional similarity to the glomerular podocyte, a cell in the vertebrate kidney that forms the main size-selective barrier as blood is ultrafiltered to make urine. In particular, both cell types possess a specialized filtration diaphragm, known as the slit diaphragm in podocytes or the nephrocyte diaphragm in nephrocytes. We find that fly (Drosophila melanogaster) orthologues of the major constituents of the slit diaphragm, including nephrin, NEPH1 (also known as KIRREL), CD2AP, ZO-1 (TJP1) and podocin, are expressed in the nephrocyte and form a complex of interacting proteins that closely mirrors the vertebrate slit diaphragm complex. Furthermore, we find that the nephrocyte diaphragm is completely lost in flies lacking the orthologues of nephrin or NEPH1-a phenotype resembling loss of the slit diaphragm in the absence of either nephrin (as in human congenital nephrotic syndrome of the Finnish type, NPHS1) or NEPH1. These changes markedly impair filtration function in the nephrocyte. The similarities we describe between invertebrate nephrocytes and vertebrate podocytes provide evidence suggesting that the two cell types are evolutionarily related, and establish the nephrocyte as a simple model in which to study podocyte biology and podocyte-associated diseases.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2687078/" 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/PMC2687078/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weavers, Helen -- Prieto-Sanchez, Silvia -- Grawe, Ferdinand -- Garcia-Lopez, Amparo -- Artero, Ruben -- Wilsch-Brauninger, Michaela -- Ruiz-Gomez, Mar -- Skaer, Helen -- Denholm, Barry -- 072441/Wellcome Trust/United Kingdom -- 079221/Wellcome Trust/United Kingdom -- Arthritis Research UK/United Kingdom -- England -- Nature. 2009 Jan 15;457(7227):322-6. doi: 10.1038/nature07526. Epub 2008 Oct 29.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18971929" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Drosophila Proteins/genetics/*metabolism ; Drosophila melanogaster/anatomy & histology/*cytology/physiology ; Immunoglobulins/genetics/metabolism ; Membrane Proteins/deficiency/genetics/metabolism ; Muscle Proteins/genetics/metabolism ; Podocytes/*cytology/metabolism/*physiology
    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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  • 3
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    Beta-catenin defines head versus tail identity during planarian regeneration and homeostasis (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007
    Description: After amputation, freshwater planarians properly regenerate a head or tail from the resulting anterior or posterior wound. The mechanisms that differentiate anterior from posterior and direct the replacement of the appropriate missing body parts are unknown. We found that in the planarian Schmidtea mediterranea, RNA interference (RNAi) of beta-catenin or dishevelled causes the inappropriate regeneration of a head instead of a tail at posterior amputations. Conversely, RNAi of the beta-catenin antagonist adenomatous polyposis coli results in the regeneration of a tail at anterior wounds. In addition, the silencing of beta-catenin is sufficient to transform the tail of uncut adult animals into a head. We suggest that beta-catenin functions as a molecular switch to specify and maintain anteroposterior identity during regeneration and homeostasis in planarians.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2755502/" 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/PMC2755502/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gurley, Kyle A -- Rink, Jochen C -- Sanchez Alvarado, Alejandro -- F32GM082016/GM/NIGMS NIH HHS/ -- R0-1 GM57260/GM/NIGMS NIH HHS/ -- R01 GM057260/GM/NIGMS NIH HHS/ -- R01 GM057260-08/GM/NIGMS NIH HHS/ -- T32CA093247/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 2008 Jan 18;319(5861):323-7. Epub 2007 Dec 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurobiology and Anatomy, Howard Hughes Medical Institute, University of Utah School of Medicine, 401 MREB, 20N 1900E, Salt Lake City, UT 84132, USA. sanchez@neuro.utah.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18063757" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptor Proteins, Signal Transducing/chemistry/genetics/physiology ; Adenomatous Polyposis Coli Protein/chemistry/physiology ; Amino Acid Sequence ; Animals ; Body Patterning ; Gene Expression Profiling ; Genes, APC ; Head ; Helminth Proteins/chemistry/genetics/physiology ; Homeostasis ; Molecular Sequence Data ; Phosphoproteins/chemistry/genetics/physiology ; Planarians/genetics/*physiology ; RNA Interference ; *Regeneration ; Signal Transduction ; Tail ; beta Catenin/chemistry/genetics/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    Too sanitary for vultures (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-11-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Donazar, Jose A -- Margalida, Antoni -- Carrete, Martina -- Sanchez-Zapata, Jose A -- New York, N.Y. -- Science. 2009 Oct 30;326(5953):664. doi: 10.1126/science.326_664a.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19900914" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Birds/*physiology ; Conservation of Natural Resources ; Europe ; Food Supply ; Population Dynamics ; *Sanitation/legislation & jurisprudence
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    The genome sequence of Trypanosoma cruzi, etiologic agent of Chagas disease (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-07-16
    Description: Whole-genome sequencing of the protozoan pathogen Trypanosoma cruzi revealed that the diploid genome contains a predicted 22,570 proteins encoded by genes, of which 12,570 represent allelic pairs. Over 50% of the genome consists of repeated sequences, such as retrotransposons and genes for large families of surface molecules, which include trans-sialidases, mucins, gp63s, and a large novel family (〉1300 copies) of mucin-associated surface protein (MASP) genes. Analyses of the T. cruzi, T. brucei, and Leishmania major (Tritryp) genomes imply differences from other eukaryotes in DNA repair and initiation of replication and reflect their unusual mitochondrial DNA. Although the Tritryp lack several classes of signaling molecules, their kinomes contain a large and diverse set of protein kinases and phosphatases; their size and diversity imply previously unknown interactions and regulatory processes, which may be targets for intervention.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉El-Sayed, Najib M -- Myler, Peter J -- Bartholomeu, Daniella C -- Nilsson, Daniel -- Aggarwal, Gautam -- Tran, Anh-Nhi -- Ghedin, Elodie -- Worthey, Elizabeth A -- Delcher, Arthur L -- Blandin, Gaelle -- Westenberger, Scott J -- Caler, Elisabet -- Cerqueira, Gustavo C -- Branche, Carole -- Haas, Brian -- Anupama, Atashi -- Arner, Erik -- Aslund, Lena -- Attipoe, Philip -- Bontempi, Esteban -- Bringaud, Frederic -- Burton, Peter -- Cadag, Eithon -- Campbell, David A -- Carrington, Mark -- Crabtree, Jonathan -- Darban, Hamid -- da Silveira, Jose Franco -- de Jong, Pieter -- Edwards, Kimberly -- Englund, Paul T -- Fazelina, Gholam -- Feldblyum, Tamara -- Ferella, Marcela -- Frasch, Alberto Carlos -- Gull, Keith -- Horn, David -- Hou, Lihua -- Huang, Yiting -- Kindlund, Ellen -- Klingbeil, Michele -- Kluge, Sindy -- Koo, Hean -- Lacerda, Daniela -- Levin, Mariano J -- Lorenzi, Hernan -- Louie, Tin -- Machado, Carlos Renato -- McCulloch, Richard -- McKenna, Alan -- Mizuno, Yumi -- Mottram, Jeremy C -- Nelson, Siri -- Ochaya, Stephen -- Osoegawa, Kazutoyo -- Pai, Grace -- Parsons, Marilyn -- Pentony, Martin -- Pettersson, Ulf -- Pop, Mihai -- Ramirez, Jose Luis -- Rinta, Joel -- Robertson, Laura -- Salzberg, Steven L -- Sanchez, Daniel O -- Seyler, Amber -- Sharma, Reuben -- Shetty, Jyoti -- Simpson, Anjana J -- Sisk, Ellen -- Tammi, Martti T -- Tarleton, Rick -- Teixeira, Santuza -- Van Aken, Susan -- Vogt, Christy -- Ward, Pauline N -- Wickstead, Bill -- Wortman, Jennifer -- White, Owen -- Fraser, Claire M -- Stuart, Kenneth D -- Andersson, Bjorn -- AI045039/AI/NIAID NIH HHS/ -- AI45038/AI/NIAID NIH HHS/ -- AI45061/AI/NIAID NIH HHS/ -- R01 AI031077/AI/NIAID NIH HHS/ -- R01 AI031077-11/AI/NIAID NIH HHS/ -- U01 AI045038/AI/NIAID NIH HHS/ -- U01 AI045039/AI/NIAID NIH HHS/ -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2005 Jul 15;309(5733):409-15.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Parasite Genomics, Institute for Genomic Research, Rockville, MD 20850, USA. nelsayed@tigr.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16020725" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chagas Disease/drug therapy/parasitology ; DNA Repair ; DNA Replication ; DNA, Mitochondrial/genetics ; DNA, Protozoan/genetics ; Genes, Protozoan ; *Genome, Protozoan ; Humans ; Meiosis ; Membrane Proteins/chemistry/genetics/physiology ; Multigene Family ; Protozoan Proteins/chemistry/*genetics/physiology ; Recombination, Genetic ; Repetitive Sequences, Nucleic Acid ; Retroelements ; *Sequence Analysis, DNA ; Signal Transduction ; Telomere/genetics ; Trypanocidal Agents/pharmacology/therapeutic use ; Trypanosoma cruzi/chemistry/*genetics/physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
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    SMEDWI-2 is a PIWI-like protein that regulates planarian stem cells (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-11-29
    Description: We have identified two genes, smedwi-1 and smedwi-2, expressed in the dividing adult stem cells (neoblasts) of the planarian Schmidtea mediterranea. Both genes encode proteins that belong to the Argonaute/PIWI protein family and that share highest homology with those proteins defined by Drosophila PIWI. RNA interference (RNAi) of smedwi-2 blocks regeneration, even though neoblasts are present, irradiation-sensitive, and capable of proliferating in response to wounding; smedwi-2(RNAi) neoblast progeny migrate to sites of cell turnover but, unlike normal cells, fail at replacing aged tissue. We suggest that SMEDWI-2 functions within dividing neoblasts to support the generation of cells that promote regeneration and homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Reddien, Peter W -- Oviedo, Nestor J -- Jennings, Joya R -- Jenkin, James C -- Sanchez Alvarado, Alejandro -- R0-1 GM57260/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2005 Nov 25;310(5752):1327-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Neurobiology and Anatomy, University of Utah School of Medicine, Salt Lake City, UT 84132, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16311336" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Count ; Cell Differentiation ; Cell Division ; Cell Movement ; Cell Separation ; Cell Shape ; Cyclin B/genetics ; Flow Cytometry ; Gene Expression ; *Genes, Helminth ; Helminth Proteins/genetics/*physiology ; Homeostasis ; Mitosis ; Molecular Sequence Data ; Phenotype ; Planarians/chemistry/*cytology/genetics/*physiology ; RNA Interference ; Regeneration ; Stem Cells/cytology/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Astrocytic purinergic signaling coordinates synaptic networks (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-10-08
    Description: To investigate the role of astrocytes in regulating synaptic transmission, we generated inducible transgenic mice that express a dominant-negative SNARE domain selectively in astrocytes to block the release of transmitters from these glial cells. By releasing adenosine triphosphate, which accumulates as adenosine, astrocytes tonically suppressed synaptic transmission, thereby enhancing the dynamic range for long-term potentiation and mediated activity-dependent, heterosynaptic depression. These results indicate that astrocytes are intricately linked in the regulation of synaptic strength and plasticity and provide a pathway for synaptic cross-talk.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pascual, Olivier -- Casper, Kristen B -- Kubera, Cathryn -- Zhang, Jing -- Revilla-Sanchez, Raquel -- Sul, Jai-Yoon -- Takano, Hajime -- Moss, Stephen J -- McCarthy, Ken -- Haydon, Philip G -- New York, N.Y. -- Science. 2005 Oct 7;310(5745):113-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neuroscience, Conte Center for Integration at the Tripartite Synapse, University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16210541" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/*metabolism ; Adenosine A1 Receptor Antagonists ; Adenosine Triphosphatases/antagonists & inhibitors ; Adenosine Triphosphate/analogs & derivatives/metabolism/pharmacology ; Animals ; Astrocytes/drug effects/*physiology ; Cells, Cultured ; Excitatory Postsynaptic Potentials ; Hippocampus/drug effects/physiology ; In Vitro Techniques ; Long-Term Potentiation/drug effects ; Mice ; Mice, Transgenic ; Neuronal Plasticity/drug effects ; Purinergic P1 Receptor Antagonists ; Purinergic P2 Receptor Antagonists ; Receptor, Adenosine A1/metabolism ; Receptors, N-Methyl-D-Aspartate/antagonists & inhibitors/metabolism ; Receptors, Purinergic P1/metabolism ; Receptors, Purinergic P2/metabolism ; Synapses/*physiology ; *Synaptic Transmission/drug effects ; Xanthines/pharmacology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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  • 8
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    The influence of CCL3L1 gene-containing segmental duplications on HIV-1/AIDS susceptibility (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2005-01-08
    Description: Segmental duplications in the human genome are selectively enriched for genes involved in immunity, although the phenotypic consequences for host defense are unknown. We show that there are significant interindividual and interpopulation differences in the copy number of a segmental duplication encompassing the gene encoding CCL3L1 (MIP-1alphaP), a potent human immunodeficiency virus-1 (HIV-1)-suppressive chemokine and ligand for the HIV coreceptor CCR5. Possession of a CCL3L1 copy number lower than the population average is associated with markedly enhanced HIV/acquired immunodeficiency syndrome (AIDS) susceptibility. This susceptibility is even greater in individuals who also possess disease-accelerating CCR5 genotypes. This relationship between CCL3L1 dose and altered HIV/AIDS susceptibility points to a central role for CCL3L1 in HIV/AIDS pathogenesis and indicates that differences in the dose of immune response genes may constitute a genetic basis for variable responses to infectious diseases.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gonzalez, Enrique -- Kulkarni, Hemant -- Bolivar, Hector -- Mangano, Andrea -- Sanchez, Racquel -- Catano, Gabriel -- Nibbs, Robert J -- Freedman, Barry I -- Quinones, Marlon P -- Bamshad, Michael J -- Murthy, Krishna K -- Rovin, Brad H -- Bradley, William -- Clark, Robert A -- Anderson, Stephanie A -- O'connell, Robert J -- Agan, Brian K -- Ahuja, Seema S -- Bologna, Rosa -- Sen, Luisa -- Dolan, Matthew J -- Ahuja, Sunil K -- AI043279/AI/NIAID NIH HHS/ -- AI046326/AI/NIAID NIH HHS/ -- MH069270/MH/NIMH NIH HHS/ -- New York, N.Y. -- Science. 2005 Mar 4;307(5714):1434-40. Epub 2005 Jan 6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Veterans Administration Research Center for AIDS and HIV-1 Infection, South Texas Veterans Health Care System, and Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78229, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15637236" target="_blank"〉PubMed〈/a〉
    Keywords: Adolescent ; Adult ; Aged ; Animals ; Chemokines, CC/*genetics/metabolism ; Child ; Cohort Studies ; Continental Population Groups/genetics ; Disease Progression ; Ethnic Groups/genetics ; Female ; *Gene Dosage ; *Gene Duplication ; *Genetic Predisposition to Disease ; Genotype ; HIV Infections/epidemiology/*genetics/*immunology/virology ; *HIV-1/metabolism ; Humans ; Male ; Middle Aged ; Pan troglodytes/genetics ; Phenotype ; Public Health ; Receptors, CCR5/genetics/metabolism ; Selection, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Transgenic mice with a reduced core body temperature have an increased life span (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-11-04
    Description: Reduction of core body temperature has been proposed to contribute to the increased life span and the antiaging effects conferred by calorie restriction (CR). Validation of this hypothesis has been difficult in homeotherms, primarily due to a lack of experimental models. We report that transgenic mice engineered to overexpress the uncoupling protein 2 in hypocretin neurons (Hcrt-UCP2) have elevated hypothalamic temperature. The effects of local temperature elevation on the central thermostat resulted in a 0.3 degrees to 0.5 degrees C reduction of the core body temperature. Fed ad libitum, Hcrt-UCP2 transgenic mice had the same caloric intake as their wild-type littermates but had increased energy efficiency and a greater median life span (12% increase in males; 20% increase in females). Thus, modest, sustained reduction of core body temperature prolonged life span independent of altered diet or CR.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Conti, Bruno -- Sanchez-Alavez, Manuel -- Winsky-Sommerer, Raphaelle -- Morale, Maria Concetta -- Lucero, Jacinta -- Brownell, Sara -- Fabre, Veronique -- Huitron-Resendiz, Salvador -- Henriksen, Steven -- Zorrilla, Eric P -- de Lecea, Luis -- Bartfai, Tamas -- MH58543/MH/NIMH NIH HHS/ -- NS043501/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2006 Nov 3;314(5800):825-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Harold L. Dorris Neurological Research Center, Scripps Research Institute, La Jolla, CA 92037, USA. bconti@scripps.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17082459" target="_blank"〉PubMed〈/a〉
    Keywords: Aging ; Animals ; *Body Temperature ; Body Temperature Regulation ; Body Weight ; Circadian Rhythm ; Drinking ; Eating ; Energy Metabolism ; Female ; Hypothalamic Area, Lateral/cytology/metabolism ; Intracellular Signaling Peptides and Proteins/metabolism ; Ion Channels/genetics/physiology ; *Longevity ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Transgenic ; Mitochondrial Proteins/genetics/physiology ; Neurons/metabolism ; Neuropeptides/metabolism ; Orexins ; Preoptic Area/cytology/*physiology ; Thermogenesis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Noncoding RNAs of trithorax response elements recruit Drosophila Ash1 to Ultrabithorax (2006)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2006-02-25
    Description: Homeotic genes contain cis-regulatory trithorax response elements (TREs) that are targeted by epigenetic activators and transcribed in a tissue-specific manner. We show that the transcripts of three TREs located in the Drosophila homeotic gene Ultrabithorax (Ubx) mediate transcription activation by recruiting the epigenetic regulator Ash1 to the template TREs. TRE transcription coincides with Ubx transcription and recruitment of Ash1 to TREs in Drosophila. The SET domain of Ash1 binds all three TRE transcripts, with each TRE transcript hybridizing with and recruiting Ash1 only to the corresponding TRE in chromatin. Transgenic transcription of TRE transcripts restores recruitment of Ash1 to Ubx TREs and restores Ubx expression in Drosophila cells and tissues that lack endogenous TRE transcripts. Small interfering RNA-induced degradation of TRE transcripts attenuates Ash1 recruitment to TREs and Ubx expression, which suggests that noncoding TRE transcripts play an important role in epigenetic activation of gene expression.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sanchez-Elsner, Tilman -- Gou, Dawei -- Kremmer, Elisabeth -- Sauer, Frank -- New York, N.Y. -- Science. 2006 Feb 24;311(5764):1118-23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, University of California, Riverside, CA 92521, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16497925" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Motifs ; Animals ; Chromatin/metabolism ; Chromatin Immunoprecipitation ; DNA-Binding Proteins/chemistry/*genetics/*metabolism ; Drosophila Proteins/chemistry/*genetics/*metabolism ; Drosophila melanogaster/*genetics/growth & development/metabolism ; *Epigenesis, Genetic ; Gene Expression Regulation ; Genes, Homeobox ; Genes, Insect ; Homeodomain Proteins/*genetics ; Protein Structure, Tertiary ; RNA Interference ; RNA, Messenger/genetics/metabolism ; RNA, Untranslated/*genetics ; *Response Elements ; Ribonucleases/metabolism ; Transcription Factors/chemistry/*genetics/*metabolism ; Transcription, Genetic
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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