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Research Papers
Center for Molecular Medicine/Institute of Biotechnology, The University of Texas Health Science Center at San Antonio 78245, USA.
Abstract
BRCA1 is proposed to be a tumor suppressor gene. To explore the biological function of BRCA1, a partial deletion (amino acids 300-361) of mouse Brca1 exon 11 was introduced into the genome of embryonic stem (ES) cells by homologous recombination. Mice carrying one mutated allele of Brca1 appear normal and are fertile up to 10 months of age without any sign of illness. However, no viable progeny homozygous for the Brca1 mutant allele were obtained. Detailed analysis of large numbers of embryos at different stages of development indicated that the homozygous mutant concepti are severely retarded in growth as early as embryonic day 4.5 (E4.5) and are resorbed completely by E8.5. Although the homozygotes at E5.5-E6.5 are able to synthesize DNA and display distinguishable embryonic and extraembryonic structures, they fail to differentiate and form egg cylinders. Consequently, they were unable to form primitive streaks and undergo gastrulation. Consistent with these in vivo results, blastocysts homozygous for mutated Brca1 alleles are at a considerable disadvantage when grown in vitro. These observations suggest that Brca1 has an important role in the early development of mouse embryos.
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S. Li, P.-L. Chen, T. Subramanian, G. Chinnadurai, G. Tomlinson, C. K. Osborne, Z. D. Sharp, and W.-H. Lee Binding of CtIP to the BRCT Repeats of BRCA1 Involved in the Transcription Regulation of p21 Is Disrupted Upon DNA Damage J. Biol. Chem., April 16, 1999; 274(16): 11334 - 11338. [Abstract] [Full Text] [PDF] |
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Y.-F. Hu, Z. L. Hao, and R. Li Chromatin remodeling and activation of chromosomal DNA replication by an acidic transcriptional activation domain from BRCA1 Genes & Dev., March 15, 1999; 13(6): 637 - 642. [Abstract] [Full Text] |
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V. L. Cressman, D. C. Backlund, E. M. Hicks, L. C. Gowen, V. Godfrey, and B. H. Koller Mammary Tumor Formation in p53- and BRCA1-deficient Mice Cell Growth Differ., January 1, 1999; 10(1): 1 - 10. [Abstract] [Full Text] |
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C.-Y. Liu, A. Shiraishi, C. W.-C. Kao, R. L. Converse, J. L. Funderburgh, L. M. Corpuz, G. W. Conrad, and W. W.-Y. Kao The Cloning of Mouse Keratocan cDNA and Genomic DNA and the Characterization of Its Expression during Eye Development J. Biol. Chem., August 28, 1998; 273(35): 22584 - 22588. [Abstract] [Full Text] [PDF] |
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F. Durocher, J. Simard, J. Ouellette, V. Richard, F. Labrie, and G. Pelletier Localization of BRCA1 Gene Expression in Adult Cynomolgus Monkey Tissues J. Histochem. Cytochem., September 1, 1997; 45(9): 1173 - 1188. [Abstract] [Full Text] [PDF] |
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C.-F. Xu, J. A. Chambers, and E. Solomon Complex Regulation of the BRCA1 Gene J. Biol. Chem., August 22, 1997; 272(34): 20994 - 20997. [Abstract] [Full Text] [PDF] |
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H. Ruffner and I. M. Verma BRCA1 is a cell cycle-regulated nuclear phosphoprotein PNAS, July 8, 1997; 94(14): 7138 - 7143. [Abstract] [Full Text] [PDF] |
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T Ludwig, D L Chapman, V E Papaioannou, and A Efstratiadis Targeted mutations of breast cancer susceptibility gene homologs in mice: lethal phenotypes of Brca1, Brca2, Brca1/Brca2, Brca1/p53, and Brca2/p53 nullizygous embryos. Genes & Dev., May 15, 1997; 11(10): 1226 - 1241. [Abstract] [PDF] |
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A Suzuki, J L de la Pompa, R Hakem, A Elia, R Yoshida, R Mo, H Nishina, T Chuang, A Wakeham, A Itie, et al. Brca2 is required for embryonic cellular proliferation in the mouse. Genes & Dev., May 15, 1997; 11(10): 1242 - 1252. [Abstract] [PDF] |
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S C Farmer, C W Sun, G E Winnier, B L Hogan, and T M Townes The bZIP transcription factor LCR-F1 is essential for mesoderm formation in mouse development. Genes & Dev., March 15, 1997; 11(6): 786 - 798. [Abstract] [PDF] |
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C.-F. Chen, S. Li, Y. Chen, P.-L. Chen, Z. D. Sharp, and W.-H. Lee The Nuclear Localization Sequences of the BRCA1 Protein Interact with the Importin-alpha Subunit of the Nuclear Transport Signal Receptor J. Biol. Chem., December 20, 1996; 271(51): 32863 - 32868. [Abstract] [Full Text] [PDF] |
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O. Aprelikova, A. J. Pace, B. Fang, B. H. Koller, and E. T. Liu BRCA1 Is a Selective Co-activator of 14-3-3sigma Gene Transcription in Mouse Embryonic Stem Cells J. Biol. Chem., July 6, 2001; 276(28): 25647 - 25650. [Abstract] [Full Text] [PDF] |
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T. T. Paull, D. Cortez, B. Bowers, S. J. Elledge, and M. Gellert From the Cover: Direct DNA binding by Brca1 PNAS, May 22, 2001; 98(11): 6086 - 6091. [Abstract] [Full Text] [PDF] |
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V. Joukov, J. Chen, E. A. Fox, J. B. A. Green, and D. M. Livingston Functional communication between endogenous BRCA1 and its partner, BARD1, during Xenopus laevis development PNAS, October 9, 2001; 98(21): 12078 - 12083. [Abstract] [Full Text] [PDF] |
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