Title : Progesterone receptor-A and -B have opposite effects on proinflammatory gene expression in human myometrial cells: implications for progesterone actions in human pregnancy and parturition.

Pub. Date : 2012 May

PMID : 22419721






7 Functional Relationships(s)
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1 OBJECTIVE: Our objective was to determine how PR-A and PR-B regulate progesterone action in human myometrial cells and specifically the expression of genes encoding contraction-associated proteins and proinflammatory mediators. Progesterone RB transcriptional corepressor 1 Homo sapiens
2 DESIGN: Effects of PR-A and PR-B on the capacity for progesterone to modulate gene expression was determined using an immortalized human myometrial cell line stably transfected with inducible PR-A and PR-B expression transgenes and conditioned to express various PR-A and PR-B levels. Progesterone RB transcriptional corepressor 1 Homo sapiens
3 DESIGN: Effects of PR-A and PR-B on the capacity for progesterone to modulate gene expression was determined using an immortalized human myometrial cell line stably transfected with inducible PR-A and PR-B expression transgenes and conditioned to express various PR-A and PR-B levels. Progesterone RB transcriptional corepressor 1 Homo sapiens
4 DESIGN: Effects of PR-A and PR-B on the capacity for progesterone to modulate gene expression was determined using an immortalized human myometrial cell line stably transfected with inducible PR-A and PR-B expression transgenes and conditioned to express various PR-A and PR-B levels. Progesterone RB transcriptional corepressor 1 Homo sapiens
5 RESULTS: PR-A and PR-B were each transcriptionally active in response to progesterone and affected the expression of distinct gene cohorts. Progesterone RB transcriptional corepressor 1 Homo sapiens
6 CONCLUSIONS: Our data suggest that during most of human pregnancy, when myometrial cells are PR-B dominant, progesterone promotes myometrial quiescence through PR-B-mediated antiinflammatory actions. Progesterone RB transcriptional corepressor 1 Homo sapiens
7 CONCLUSIONS: Our data suggest that during most of human pregnancy, when myometrial cells are PR-B dominant, progesterone promotes myometrial quiescence through PR-B-mediated antiinflammatory actions. Progesterone RB transcriptional corepressor 1 Homo sapiens