Sequential activation of genetic programs in mouse mammary epithelium during pregnancy depends on STAT5A/B concentration.

ABSTRACT: The transcription factors Signal Transducer and Activator of Transcription (STAT) 5A/B mediate prolactin-induced mammary development during pregnancy. However, it is not clear how the different processes, expansion and maturation of alveolar precursor cells and the differential induction of milk protein genes are regulated on a molecular level. We have used mouse genetics and genome-wide analyses to determine how altering concentrations of STAT5A and STAT5B impacts mammary epithelial development during pregnancy and the regulation of target genes. The presence of only a single Stat5a or Stat5b allele was sufficient for the establishment of histologically undifferentiated alveolar units and two alleles permitted the execution of a differentiation program similar to that found with all four

SUBMITTER: Yamaji D 

PROVIDER: S-EPMC3561979 | biostudies-literature | 2013 Feb

REPOSITORIES: biostudies-literature