Administration of betaHCG leads to dose-dependent changes of gene expression signature of endometriotic stromal cells

Reprod Biomed Online. 2010 May;20(5):699-706. doi: 10.1016/j.rbmo.2010.01.010. Epub 2010 Feb 1.

Abstract

Preliminary studies have shown that systemic beta-human chorionic gonadotrophin (betaHCG) therapy alleviates endometriosis-related chronic pelvic pain. The underlying mechanism, however, is completely unknown. This study has investigated the dose-dependent alterations in the overall gene expression profile of endometriosis-derived stromal cells under increasing concentrations of betaHCG by using the Affymetrix GeneChip U133 Set. It has been previously shown that betaHCG concentrations of 0.1U/ml and higher lead to a significant and dose-dependent increase in the expression of 68 genes. This study reports on a cluster analysis which identified three clusters of genes with a comparable expression pattern in response to increasing concentrations of betaHCG. Most of the up-regulated genes encoded proteins that are involved in cell adhesion, intercellular communication, extracellular matrix remodelling, apoptosis and inflammation. Stromal monocultures from eight patients, treated with and without 50U/ml of betaHCG, were then incubated and real-time polymerase chain reaction for the highly up-regulated genes PAI2, DUSP6, PLAU and MMP1 performed in order to validate the cDNA array findings in patients with endometriosis. Taken together, this study shows that betaHCG induces dose-dependent characteristic response clusters in the gene expression profile of stromal cells obtained from endometriotic lesions which could explain the differential biological responses of betaHCG in endometriosis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • CD56 Antigen / metabolism
  • Chorionic Gonadotropin, beta Subunit, Human / administration & dosage*
  • Chorionic Gonadotropin, beta Subunit, Human / pharmacology
  • Dose-Response Relationship, Drug
  • Endometrium / cytology
  • Endometrium / drug effects*
  • Endometrium / metabolism
  • Female
  • Fluorescent Antibody Technique
  • Gene Expression / drug effects*
  • Humans
  • Leukocyte Common Antigens / metabolism
  • Reverse Transcriptase Polymerase Chain Reaction
  • Stromal Cells / drug effects*
  • Stromal Cells / metabolism
  • Vimentin / metabolism

Substances

  • CD56 Antigen
  • Chorionic Gonadotropin, beta Subunit, Human
  • Vimentin
  • Leukocyte Common Antigens