Effects of progesterone treatment on expression of genes involved in uterine quiescence

Melvyn S. Soloff, Yow Jiun Jeng, Michael G. Izban, Mala Sinha, Bruce A. Luxon, Susan J. Stamnes, Sarah K. England

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

An important action of progesterone during pregnancy is to maintain the uterus in a quiescent state and thereby prevent preterm labor. The causes of preterm labor are not well understood, so progesterone action on the myometrium can provide clues about the processes that keep the uterus from contracting prematurely. Accordingly, we have carried out Affymetrix GeneChip analysis of progesterone effects on gene expression in immortalized human myometrial cells cultured from a patient near the end of pregnancy. Progesterone appears to inhibit uterine excitability by a number of mechanisms, including increased expression of calcium and voltage-operated K+ channels, which dampens the electrical activity of the myometrial cell, downregulation of agents, and receptors involved in myometrial contraction, reduction in cell signal components that lead to increased intracellular Ca2+ concentrations in response to contractile stimuli, and downregulation of proteins involved in the cross-linking of actin and myosin filaments to produce uterine contractions.

Original languageEnglish
Pages (from-to)781-797
Number of pages17
JournalReproductive Sciences
Volume18
Issue number8
DOIs
StatePublished - Aug 1 2011
Externally publishedYes

Keywords

  • estrogen
  • gene array
  • myometrium
  • progesterrone
  • quantitative PCR
  • quiescence

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