MMTV-trBrca1 mice display strain-dependent abnormalities in vaginal development
Details
Publication Year 2004-09, Volume 48, Issue #7, Page 675-678
Journal Title
INTERNATIONAL JOURNAL OF DEVELOPMENTAL BIOLOGY
Publication Type
Journal Article
Abstract
The breast cancer susceptibility gene Brca1 encodes a large multi-functional protein which is implicated as a caretaker of the genome, through its role in regulation of DNA damage response pathways, including apoptosis. Here we show that in mice expressing a dominant-negative Brca1 transgene on a BALB/c background, vaginal entrance remodeling is inhibited, and that the incidence of this phenotype is increased on a p53 +/- genotype. Given that this developmental process is mediated primarily by apoptosis, we hypothesized that disruption of BRCA1 may confer a resistance to apoptosis in normal epithelial cells. Consistent with this, we show that expression of this transgene in vitro leads to resistance to ionizing radiation induced cell killing in mammary epithelial cells. This is the first time that BRCA1 has been implicated in an apoptosis-mediated normal developmental process.
Publisher
U B C PRESS
Keywords
BREAST-CANCER RISK; TRANSGENIC MICE; BRCA1; APOPTOSIS; EXPRESSION; MUTATION; GENE; INDUCTION; TISSUES; CELLS
Rights Notice
Refer to copyright notice on published article.


Creation Date: 2004-09-01 12:00:00
Last Modified: 0001-01-01 12:00:00
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