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  • 1
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    Premature aging in mice deficient in DNA repair and transcription (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-04-16
    Description: One of the factors postulated to drive the aging process is the accumulation of DNA damage. Here, we provide strong support for this hypothesis by describing studies of mice with a mutation in XPD, a gene encoding a DNA helicase that functions in both repair and transcription and that is mutated in the human disorder trichothiodystrophy (TTD). TTD mice were found to exhibit many symptoms of premature aging, including osteoporosis and kyphosis, osteosclerosis, early greying, cachexia, infertility, and reduced life-span. TTD mice carrying an additional mutation in XPA, which enhances the DNA repair defect, showed a greatly accelerated aging phenotype, which correlated with an increased cellular sensitivity to oxidative DNA damage. We hypothesize that aging in TTD mice is caused by unrepaired DNA damage that compromises transcription, leading to functional inactivation of critical genes and enhanced apoptosis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Boer, Jan -- Andressoo, Jaan Olle -- de Wit, Jan -- Huijmans, Jan -- Beems, Rudolph B -- van Steeg, Harry -- Weeda, Geert -- van der Horst, Gijsbertus T J -- van Leeuwen, Wibeke -- Themmen, Axel P N -- Meradji, Morteza -- Hoeijmakers, Jan H J -- AG 17242-02/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 2002 May 17;296(5571):1276-9. Epub 2002 Apr 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Genetics Center, Department of Cell Biology and Genetics, Center for Biomedical Genetics, Erasmus University, 3000 DR Rotterdam, Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11950998" target="_blank"〉PubMed〈/a〉
    Keywords: *Aging ; Aging, Premature/*etiology ; Animals ; Apoptosis ; Bone Density ; Cachexia/etiology ; Crosses, Genetic ; *DNA Damage ; DNA Helicases/genetics/*physiology ; *DNA Repair ; DNA-Binding Proteins/genetics/physiology ; Female ; Fertility ; Gene Targeting ; Growth Disorders/etiology/genetics ; Hair Diseases/genetics ; Kyphosis/etiology/genetics/pathology ; Male ; Mice ; Mutation ; Oxidative Stress ; Phenotype ; Point Mutation ; Proteins/genetics/*physiology ; RNA-Binding Proteins/genetics/physiology ; *Transcription Factors ; Transcription, Genetic ; Xeroderma Pigmentosum Group A Protein ; Xeroderma Pigmentosum Group D Protein
    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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  • 2
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    Targeting PTPRK-RSPO3 colon tumours promotes differentiation and loss of stem-cell function (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-12-25
    Description: Colorectal cancer remains a major unmet medical need, prompting large-scale genomics efforts in the field to identify molecular drivers for which targeted therapies might be developed. We previously reported the identification of recurrent translocations in R-spondin genes present in a subset of colorectal tumours. Here we show that targeting RSPO3 in PTPRK-RSPO3-fusion-positive human tumour xenografts inhibits tumour growth and promotes differentiation. Notably, genes expressed in the stem-cell compartment of the intestine were among those most sensitive to anti-RSPO3 treatment. This observation, combined with functional assays, suggests that a stem-cell compartment drives PTPRK-RSPO3 colorectal tumour growth and indicates that the therapeutic targeting of stem-cell properties within tumours may be a clinically relevant approach for the treatment of colorectal tumours.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Storm, Elaine E -- Durinck, Steffen -- de Sousa e Melo, Felipe -- Tremayne, Jarrod -- Kljavin, Noelyn -- Tan, Christine -- Ye, Xiaofen -- Chiu, Cecilia -- Pham, Thinh -- Hongo, Jo-Anne -- Bainbridge, Travis -- Firestein, Ron -- Blackwood, Elizabeth -- Metcalfe, Ciara -- Stawiski, Eric W -- Yauch, Robert L -- Wu, Yan -- de Sauvage, Frederic J -- England -- Nature. 2016 Jan 7;529(7584):97-100. doi: 10.1038/nature16466. Epub 2015 Dec 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Molecular Biology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Translational Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Antibody Engineering, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Discovery Oncology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Research Pathology, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA. ; Protein Chemistry, Genentech, Inc., 1 DNA Way, South San Francisco, California 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26700806" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibodies/immunology/pharmacology/therapeutic use ; Cell Differentiation/*drug effects ; Cell Division/drug effects ; Colorectal Neoplasms/*drug therapy/metabolism/*pathology ; Disease Progression ; Female ; Gene Expression Regulation/drug effects ; Humans ; Intestines/cytology/drug effects/metabolism/pathology ; Male ; Mice ; *Molecular Targeted Therapy ; Neoplastic Stem Cells/*drug effects/metabolism/*pathology ; Receptor-Like Protein Tyrosine Phosphatases, Class 2/*metabolism ; Stem Cells/cytology/metabolism ; Thrombospondins/antagonists & inhibitors/immunology/*metabolism ; Xenograft Model Antitumor Assays
    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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    REV7 counteracts DNA double-strand break resection and affects PARP inhibition (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-03-25
    Description: Error-free repair of DNA double-strand breaks (DSBs) is achieved by homologous recombination (HR), and BRCA1 is an important factor for this repair pathway. In the absence of BRCA1-mediated HR, the administration of PARP inhibitors induces synthetic lethality of tumour cells of patients with breast or ovarian cancers. Despite the benefit of this tailored therapy, drug resistance can occur by HR restoration. Genetic reversion of BRCA1-inactivating mutations can be the underlying mechanism of drug resistance, but this does not explain resistance in all cases. In particular, little is known about BRCA1-independent restoration of HR. Here we show that loss of REV7 (also known as MAD2L2) in mouse and human cell lines re-establishes CTIP-dependent end resection of DSBs in BRCA1-deficient cells, leading to HR restoration and PARP inhibitor resistance, which is reversed by ATM kinase inhibition. REV7 is recruited to DSBs in a manner dependent on the H2AX-MDC1-RNF8-RNF168-53BP1 chromatin pathway, and seems to block HR and promote end joining in addition to its regulatory role in DNA damage tolerance. Finally, we establish that REV7 blocks DSB resection to promote non-homologous end-joining during immunoglobulin class switch recombination. Our results reveal an unexpected crucial function of REV7 downstream of 53BP1 in coordinating pathological DSB repair pathway choices in BRCA1-deficient cells.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4671316/" 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/PMC4671316/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Xu, Guotai -- Chapman, J Ross -- Brandsma, Inger -- Yuan, Jingsong -- Mistrik, Martin -- Bouwman, Peter -- Bartkova, Jirina -- Gogola, Ewa -- Warmerdam, Daniel -- Barazas, Marco -- Jaspers, Janneke E -- Watanabe, Kenji -- Pieterse, Mark -- Kersbergen, Ariena -- Sol, Wendy -- Celie, Patrick H N -- Schouten, Philip C -- van den Broek, Bram -- Salman, Ahmed -- Nieuwland, Marja -- de Rink, Iris -- de Ronde, Jorma -- Jalink, Kees -- Boulton, Simon J -- Chen, Junjie -- van Gent, Dik C -- Bartek, Jiri -- Jonkers, Jos -- Borst, Piet -- Rottenberg, Sven -- 090532/Wellcome Trust/United Kingdom -- 104558/Wellcome Trust/United Kingdom -- P30 CA016672/CA/NCI NIH HHS/ -- Cancer Research UK/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2015 May 28;521(7553):541-4. doi: 10.1038/nature14328. Epub 2015 Mar 23.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands. ; The Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford OX3 7BN, UK. ; Department of Genetics, Erasmus, University Medical Center, 3000 CA Rotterdam, The Netherlands. ; Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA. ; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic. ; Division of Molecular Pathology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands. ; Danish Cancer Society Research Center, 2100 Copenhagen, Denmark. ; Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands. ; Protein Facility, The Netherlands Cancer Institute, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands. ; Deep Sequencing Core Facility, The Netherlands Cancer Institute, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands. ; Division of Molecular Carcinogenesis, The Netherlands Cancer Institute, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands. ; DNA Damage Response Laboratory, London Research Institute, Cancer Research UK, Clare Hall, South Mimms, Hertfordshire EN6 3LD, UK. ; 1] Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, 779 00 Olomouc, Czech Republic [2] Danish Cancer Society Research Center, 2100 Copenhagen, Denmark. ; 1] Division of Molecular Oncology, The Netherlands Cancer Institute, Plesmanlaan 121, 1066CX Amsterdam, The Netherlands [2] Institute of Animal Pathology, Vetsuisse Faculty, University of Bern, Laengassstrasse 122, 3012 Bern, Switzerland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25799992" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Ataxia Telangiectasia Mutated Proteins/antagonists & inhibitors/metabolism ; BRCA1 Protein/deficiency/genetics/metabolism ; Cell Line ; Chromatin/metabolism ; Chromosomal Proteins, Non-Histone/metabolism ; *DNA Breaks, Double-Stranded ; DNA-Binding Proteins/metabolism ; Drug Resistance, Neoplasm/genetics ; Histones/metabolism ; Humans ; Immunoglobulin Class Switching/genetics ; Intracellular Signaling Peptides and Proteins/metabolism ; Mad2 Proteins/deficiency/genetics/*metabolism ; Mice ; Nuclear Proteins/metabolism ; *Poly(ADP-ribose) Polymerase Inhibitors ; *Recombinational DNA Repair ; Trans-Activators/metabolism ; Ubiquitin-Protein Ligases/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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  • 4
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    Mutations in dynein link motor neuron degeneration to defects in retrograde transport (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-06
    Description: Degenerative disorders of motor neurons include a range of progressive fatal diseases such as amyotrophic lateral sclerosis (ALS), spinal-bulbar muscular atrophy (SBMA), and spinal muscular atrophy (SMA). Although the causative genetic alterations are known for some cases, the molecular basis of many SMA and SBMA-like syndromes and most ALS cases is unknown. Here we show that missense point mutations in the cytoplasmic dynein heavy chain result in progressive motor neuron degeneration in heterozygous mice, and in homozygotes this is accompanied by the formation of Lewy-like inclusion bodies, thus resembling key features of human pathology. These mutations exclusively perturb neuron-specific functions of dynein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hafezparast, Majid -- Klocke, Rainer -- Ruhrberg, Christiana -- Marquardt, Andreas -- Ahmad-Annuar, Azlina -- Bowen, Samantha -- Lalli, Giovanna -- Witherden, Abi S -- Hummerich, Holger -- Nicholson, Sharon -- Morgan, P Jeffrey -- Oozageer, Ravi -- Priestley, John V -- Averill, Sharon -- King, Von R -- Ball, Simon -- Peters, Jo -- Toda, Takashi -- Yamamoto, Ayumu -- Hiraoka, Yasushi -- Augustin, Martin -- Korthaus, Dirk -- Wattler, Sigrid -- Wabnitz, Philipp -- Dickneite, Carmen -- Lampel, Stefan -- Boehme, Florian -- Peraus, Gisela -- Popp, Andreas -- Rudelius, Martina -- Schlegel, Juergen -- Fuchs, Helmut -- Hrabe de Angelis, Martin -- Schiavo, Giampietro -- Shima, David T -- Russ, Andreas P -- Stumm, Gabriele -- Martin, Joanne E -- Fisher, Elizabeth M C -- New York, N.Y. -- Science. 2003 May 2;300(5620):808-12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Neurodegenerative Disease, Institute of Neurology, National Hospital for Neurology and Neurosurgery, Queen Square, London WC1N 3BG, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12730604" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anterior Horn Cells/pathology ; Apoptosis ; *Axonal Transport ; Cell Differentiation ; Cell Movement ; Central Nervous System/embryology ; Chromosome Mapping ; Dimerization ; Dyneins/chemistry/*genetics/*physiology ; Female ; Ganglia, Spinal/pathology ; Golgi Apparatus/metabolism/ultrastructure ; Heterozygote ; Homozygote ; Lewy Bodies/pathology ; Male ; Mice ; Mice, Inbred C3H ; Mice, Inbred C57BL ; Motor Neuron Disease/*genetics/pathology/physiopathology ; Motor Neurons/*physiology/ultrastructure ; Mutation ; Mutation, Missense ; *Nerve Degeneration ; Peptide Fragments/metabolism ; Phenotype ; Point Mutation ; Spinal Nerves/growth & development ; Tetanus Toxin/metabolism
    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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    Regulation of cell fate decision of undifferentiated spermatogonia by GDNF (2000)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 2000-02-26
    Description: The molecular control of self-renewal and differentiation of stem cells has remained enigmatic. Transgenic loss-of-function and overexpression models now show that the dosage of glial cell line-derived neurotrophic factor (GDNF), produced by Sertoli cells, regulates cell fate decisions of undifferentiated spermatogonial cells that include the stem cells for spermatogenesis. Gene-targeted mice with one GDNF-null allele show depletion of stem cell reserves, whereas mice overexpressing GDNF show accumulation of undifferentiated spermatogonia. They are unable to respond properly to differentiation signals and undergo apoptosis upon retinoic acid treatment. Nonmetastatic testicular tumors are regularly formed in older GDNF-overexpressing mice. Thus, GDNF contributes to paracrine regulation of spermatogonial self-renewal and differentiation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meng, X -- Lindahl, M -- Hyvonen, M E -- Parvinen, M -- de Rooij, D G -- Hess, M W -- Raatikainen-Ahokas, A -- Sainio, K -- Rauvala, H -- Lakso, M -- Pichel, J G -- Westphal, H -- Saarma, M -- Sariola, H -- New York, N.Y. -- Science. 2000 Feb 25;287(5457):1489-93.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Research Programs of Developmental Biology, Molecular Neurobiology, Electron Microscopy Unit, Institute of Biotechnology, Viikki Biocenter, Finland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/10688798" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis/drug effects ; Cell Cycle ; Cell Differentiation/drug effects ; Cobalt/metabolism ; *Drosophila Proteins ; Female ; Gene Expression ; Gene Targeting ; Glial Cell Line-Derived Neurotrophic Factor ; Glial Cell Line-Derived Neurotrophic Factor Receptors ; Male ; Mice ; Mice, Transgenic ; Mitosis ; *Nerve Growth Factors ; Nerve Tissue Proteins/genetics/*physiology ; Proto-Oncogene Proteins/genetics/metabolism ; Proto-Oncogene Proteins c-ret ; Receptor Protein-Tyrosine Kinases/genetics/metabolism ; Sertoli Cells/cytology/physiology ; *Spermatogenesis ; Spermatogonia/*cytology/drug effects ; Stem Cells/*cytology ; Testicular Neoplasms/pathology ; Testis/anatomy & histology ; Vitamin A/pharmacology
    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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    Two-amino acid molecular switch in an epithelial morphogen that regulates binding to two distinct receptors (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-20
    Description: Ectodysplasin, a member of the tumor necrosis factor family, is encoded by the anhidrotic ectodermal dysplasia (EDA) gene. Mutations in EDA give rise to a clinical syndrome characterized by loss of hair, sweat glands, and teeth. EDA-A1 and EDA-A2 are two isoforms of ectodysplasin that differ only by an insertion of two amino acids. This insertion functions to determine receptor binding specificity, such that EDA-A1 binds only the receptor EDAR, whereas EDA-A2 binds only the related, but distinct, X-linked ectodysplasin-A2 receptor (XEDAR). In situ binding and organ culture studies indicate that EDA-A1 and EDA-A2 are differentially expressed and play a role in epidermal morphogenesis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yan, M -- Wang, L C -- Hymowitz, S G -- Schilbach, S -- Lee, J -- Goddard, A -- de Vos, A M -- Gao, W Q -- Dixit, V M -- New York, N.Y. -- Science. 2000 Oct 20;290(5491):523-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Oncology, Genentech, 1 DNA Way, South San Francisco, CA 94080, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11039935" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Amino Acid Substitution ; Animals ; Binding Sites ; Cell Line ; DNA-Binding Proteins/metabolism ; Ectodermal Dysplasia/genetics ; Ectodysplasins ; Epidermis/embryology/*metabolism ; Humans ; *I-kappa B Proteins ; In Situ Hybridization ; Ligands ; Membrane Proteins/*chemistry/*metabolism ; Mice ; Models, Molecular ; Molecular Sequence Data ; Morphogenesis ; NF-kappa B/metabolism ; Phosphorylation ; Point Mutation ; Protein Conformation ; Proteins/metabolism ; Receptors, Cell Surface/chemistry/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Signal Transduction ; TNF Receptor-Associated Factor 6 ; Transfection
    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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    Transcriptional regulation of cortical neuron migration by POU domain factors (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-02-23
    Description: The identification of pathways mediated by the kinase Cdk5 and the ligand reelin has provided a conceptual framework for exploring the molecular mechanisms underlying proper lamination of the developing mammalian cerebral cortex. In this report, we identify a component of the regulation of Cdk5-mediated cortical lamination by genetic analysis of the roles of the class III POU domain transcription factors, Brn-1 and Brn-2, expressed during the development of the forebrain and coexpressed in most layer II-V cortical neurons. Brn-1 and Brn-2 appear to critically control the initiation of radial migration, redundantly regulating the cell-autonomous expression of the p35 and p39 regulatory subunits of Cdk5 in migrating cortical neurons, with Brn-1(-/-)/Brn-2(-/-) mice exhibiting cortical inversion.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McEvilly, Robert J -- de Diaz, Marcela Ortiz -- Schonemann, Marcus D -- Hooshmand, Farideh -- Rosenfeld, Michael G -- New York, N.Y. -- Science. 2002 Feb 22;295(5559):1528-32.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department and School of Medicine, University of California, San Diego, 9500 Gilman Drive, La Jolla, CA 92037-0648, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11859196" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Brain/cytology/embryology/metabolism ; Cell Adhesion Molecules, Neuronal/genetics/metabolism ; Cell Line ; Cell Movement ; Cerebral Cortex/cytology/embryology/*metabolism ; Cyclin-Dependent Kinase 5 ; Cyclin-Dependent Kinases/metabolism ; Extracellular Matrix Proteins/genetics/metabolism ; Female ; Gene Targeting ; Hippocampus/cytology/embryology/metabolism ; Homeodomain Proteins ; In Situ Hybridization ; Male ; Mice ; Mutation ; Nerve Tissue Proteins/genetics/metabolism ; Neurons/*physiology ; Neuropeptides/genetics/*physiology ; POU Domain Factors ; Serine Endopeptidases ; Trans-Activators/genetics/*physiology ; Transcription Factors/genetics/*physiology ; *Transcription, 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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  • 8
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    Docosahexaenoic acid, a ligand for the retinoid X receptor in mouse brain (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-12-16
    Description: The retinoid X receptor (RXR) is a nuclear receptor that functions as a ligand-activated transcription factor. Little is known about the ligands that activate RXR in vivo. Here, we identified a factor in brain tissue from adult mice that activates RXR in cell-based assays. Purification and analysis of the factor by mass spectrometry revealed that it is docosahexaenoic acid (DHA), a long-chain polyunsaturated fatty acid that is highly enriched in the adult mammalian brain. Previous work has shown that DHA is essential for brain maturation, and deficiency of DHA in both rodents and humans leads to impaired spatial learning and other abnormalities. These data suggest that DHA may influence neural function through activation of an RXR signaling pathway.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Urquiza, A M -- Liu, S -- Sjoberg, M -- Zetterstrom, R H -- Griffiths, W -- Sjovall, J -- Perlmann, T -- New York, N.Y. -- Science. 2000 Dec 15;290(5499):2140-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ludwig Institute for Cancer Research, Stockholm Branch, Box 240, S-171 77 Stockholm, Sweden.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11118147" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Assay ; Brain/growth & development/metabolism ; *Brain Chemistry ; Cell Line ; Chromatography, High Pressure Liquid ; Culture Media, Conditioned ; Dimerization ; Docosahexaenoic Acids/*isolation & purification/*metabolism/pharmacology ; Fatty Acids, Unsaturated/pharmacology ; Histone Acetyltransferases ; Humans ; Ligands ; Male ; Mice ; Nuclear Receptor Coactivator 1 ; Receptors, Retinoic Acid/genetics/*metabolism ; Recombinant Fusion Proteins/metabolism ; Retinoid X Receptors ; Signal Transduction ; Spectrometry, Mass, Electrospray Ionization ; Transcription Factors/genetics/*metabolism ; Transfection ; Tumor Cells, Cultured
    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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    Development. Epithelial cell differentiation--a Mather of choice (2001)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2001-12-12
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉van Den Brink, G R -- de Santa Barbara, P -- Roberts, D J -- New York, N.Y. -- Science. 2001 Dec 7;294(5549):2115-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Academic Medical Center, Department of Experimental Internal Medicine in the Netherlands.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11739944" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Apoptosis ; Basic Helix-Loop-Helix Transcription Factors ; *Cell Differentiation ; Cell Division ; Cell Lineage ; Enterocytes/cytology ; Enteroendocrine Cells/cytology ; Epithelial Cells/cytology ; Goblet Cells/cytology ; Helix-Loop-Helix Motifs ; Homeodomain Proteins/metabolism ; Intestinal Mucosa/*cytology/metabolism ; Mice ; Paneth Cells/cytology ; Signal Transduction ; Stem Cells/*cytology ; Transcription Factors/genetics/*metabolism
    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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    Amphiphysin 2 (Bin1) and T-tubule biogenesis in muscle (2002)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2002-08-17
    Description: In striated muscle, the plasma membrane forms tubular invaginations (transverse tubules or T-tubules) that function in depolarization-contraction coupling. Caveolin-3 and amphiphysin were implicated in their biogenesis. Amphiphysin isoforms have a putative role in membrane deformation at endocytic sites. An isoform of amphiphysin 2 concentrated at T-tubules induced tubular plasma membrane invaginations when expressed in nonmuscle cells. This property required exon 10, a phosphoinositide-binding module. In developing myotubes, amphiphysin 2 and caveolin-3 segregated in tubular and vesicular portions of the T-tubule system, respectively. These findings support a role of the bilayer-deforming properties of amphiphysin at T-tubules and, more generally, a physiological role of amphiphysin in membrane deformation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lee, Eunkyung -- Marcucci, Melissa -- Daniell, Laurie -- Pypaert, Marc -- Weisz, Ora A -- Ochoa, Gian-Carlo -- Farsad, Khashayar -- Wenk, Markus R -- De Camilli, Pietro -- CA46128/CA/NCI NIH HHS/ -- NS36251/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2002 Aug 16;297(5584):1193-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cell Biology and Howard Hughes Medical Institute, Yale University School of Medicine, 295 Congress Avenue, New Haven, CT 06510, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12183633" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; CHO Cells ; Caveolin 3 ; Caveolins/metabolism ; Cell Differentiation ; Cell Line ; Cell Membrane/metabolism ; Cell Membrane Structures/metabolism/*ultrastructure ; Cricetinae ; Dynamins ; Exons ; GTP Phosphohydrolases/metabolism ; Liposomes/metabolism ; Mice ; Microscopy, Electron ; Morphogenesis ; *Muscle Development ; Muscle, Skeletal/metabolism/*ultrastructure ; Nerve Tissue Proteins/chemistry/genetics/*metabolism ; Phosphatidylinositol 4,5-Diphosphate/metabolism ; Protein Isoforms ; Protein Structure, Tertiary ; RNA, Small Interfering ; RNA, Untranslated/metabolism ; Recombinant Fusion Proteins/metabolism ; Transfection
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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