| Literature DB >> 10733525 |
C Brisken1, A Heineman, T Chavarria, B Elenbaas, J Tan, S K Dey, J A McMahon, A P McMahon, R A Weinberg.
Abstract
Female reproductive hormones control mammary gland morphogenesis. In the absence of the progesterone receptor (PR) from the mammary epithelium, ductal side-branching fails to occur. We can overcome this defect by ectopic expression of the protooncogene Wnt-1. Transplantation of mammary epithelia from Wnt-4(-)/(-) mice shows that Wnt-4 has an essential role in side-branching early in pregnancy. PR and Wnt-4 mRNAs colocalize to the luminal compartment of the ductal epithelium. Progesterone induces Wnt-4 in mammary epithelial cells and is required for increased Wnt-4 expression during pregnancy. Thus, Wnt signaling is essential in mediating progesterone function during mammary gland morphogenesis.Entities:
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Year: 2000 PMID: 10733525 PMCID: PMC316462
Source DB: PubMed Journal: Genes Dev ISSN: 0890-9369 Impact factor: 11.361