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Does metformin influence the insulin-, IGF I- and IGF II-receptor gene expression and Akt phosphorylation in human

Edison Capp1, Julia Jauckus, Helena von Eye Corleta

  • 1Department of Gynecological Endocrinology and Reproductive Medicine, Ruprecht-Karls University Heidelberg, Heidelberg, Germany.

European Journal of Obstetrics, Gynecology, and Reproductive Biology
|June 14, 2011
PubMed
Abstract

Insights

Metformin enhances insulin and IGF receptor gene expression and Akt phosphorylation in human endometrial stromal cells. These findings suggest metformin influences key signaling pathways in the endometrium.

Area of Science:

  • Reproductive biology
  • Endocrinology
  • Cell signaling

Background:

  • Human endometrial stromal cells (ESC) play a crucial role in uterine receptivity.
  • Insulin and Insulin-like Growth Factors (IGFs) are vital signaling molecules in reproductive processes.
  • Metformin is a widely used drug for type 2 diabetes with potential effects on reproductive health.

Purpose of the Study:

  • To investigate the impact of metformin on insulin, IGF I, and IGF II receptor gene expression in decidualized human ESC.
  • To assess the effect of metformin on Akt phosphorylation following stimulation with insulin, IGF I, and IGF II in ESC.

Main Methods:

  • Human ESC were isolated and decidualized in the presence or absence of metformin.
  • Cells were stimulated with insulin, IGF I, or IGF II.
  • Akt phosphorylation was measured by Western blot.
  • Receptor gene expression was analyzed after 6 and 24 hours.

Main Results:

  • Insulin and IGF I receptor gene expression were significantly altered by insulin, IGF I, and IGF II stimulation, with further augmentation in metformin-treated cells.
  • Metformin pretreatment particularly affected IGF II receptor gene expression.
  • Akt phosphorylation was induced by insulin, IGF I, and IGF II in both control and metformin-treated ESC, with no significant difference between groups.

Conclusions:

  • Insulin, IGF I, and IGF II modulate their respective receptor gene expression and induce Akt phosphorylation in human ESC.
  • Metformin appears to enhance these effects, suggesting a role in modulating endometrial cell signaling pathways.

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