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Updated: Jul 19, 2026
10:11
Glycopeptide Capture for Cell Surface Proteomics
Published on: May 9, 2014
Membrane-bound cell surface peptidases in reproductive organs
1Department of Obstetrics and Gynecology, Faculty of Medicine, Kyoto University, Japan.
Endocrine Journal
|July 30, 1999
Summary
Membrane-bound peptidases regulate ovarian and endometrial cell functions. Inhibiting aminopeptidase activity impacts follicular growth and decidualization, suggesting potential therapeutic uses for reproductive disorders.
Area of Science:
- Reproductive Biology
- Enzymology
- Cell Biology
Background:
- Membrane-bound cell surface peptidases are extracellular enzymes that regulate local peptide concentrations.
- These peptidases are crucial for various reproductive processes, including follicular growth, ovulation, and embryo implantation.
- Peptides play vital autocrine and paracrine roles in ovarian and endometrial functions.
Purpose of the Study:
- To investigate the differential expression of key membrane-bound peptidases in human ovarian and endometrial cells.
- To explore the functional significance of these peptidases in reproductive processes.
- To assess the impact of aminopeptidase inhibition on reproductive functions.
Main Methods:
- Differential expression analysis of peptidases (aminopeptidase-N, dipeptidyl peptidases IV, carboxypeptidase-M, neutral endopeptidase, endothelin converting enzyme-1) in ovarian and endometrial cells.
- Inhibition of aminopeptidase activity using bestatin.
- In vitro and in vivo studies assessing effects on follicular growth, steroidogenesis, and decidualization.
Main Results:
- Significant differences in peptidase expression were observed across ovarian granulosa, theca interna, luteal cells, and endometrial epithelial and stromal cells.
- Bestatin-mediated inhibition of aminopeptidase activity impaired murine follicular growth and porcine ovarian steroidogenesis.
- Inhibition also affected progesterone-induced decidualization of human endometrial stromal cells.
Conclusions:
- Membrane-bound peptidases are critical regulators of ovarian and endometrial cell function and differentiation.
- Targeting these peptidases, particularly aminopeptidases, holds promise for treating reproductive disorders.
- Further research will elucidate the precise physiological roles of these enzymes and their clinical applications.
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