Women's Health Weekly
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Breast Cancer
Recent findings in breast cancer described by I. Plo and colleagues
January 15th, 2009
According to recent research from France, "AKT1 is frequently up-regulated in sporadic breast cancer, whereas BRCA1 is frequently mutated in familial breast cancer. Because BRCA1 is involved in homologous recombination (HR), we addressed whether AKT1 also has an effect on this process." "We showed that AKT1 repressed HR through cytoplasmic retention of BRCA1 and RAD51 proteins, resulting in a BRCA1-deficient-like phenotype. This process does not require direct BRCA1 phosphorylation by AKT1. The cytoplasmic retention of BRCA1 and RAD51 correlated with activated AKT1 in tumor cell lines and in biopsies from sporadic breast cancers. Under nonpathologic conditions,...
Source: Women's Health Weekly (2009-01-15)
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