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In Vitro Culture of Epithelial Cells from Different Anatomical Regions of the Human Amniotic Membrane
Published on: November 28, 2019
Natural antimicrobial production by the amnion.
Sarah J Stock1, Rodney W Kelly, Simon C Riley
1Department of Obstetrics and Gynaecology, University of Edinburgh, Centre for Reproductive Biology, Queen's Medical Research Institute, Edinburgh, UK. sarah.stock@ed.ac.uk
American Journal of Obstetrics and Gynecology
|March 10, 2007
Summary
The amnion produces natural antimicrobials like human beta defensin-2 (HBD2), which are upregulated by the inflammatory cytokine interleukin-1 beta (IL-1beta), potentially protecting pregnancy from infection.
Area of Science:
- Reproductive biology
- Immunology
- Antimicrobial research
Background:
- The amnion plays a crucial role in protecting the pregnancy from infection.
- Natural antimicrobials are key components of the innate immune system.
- Interleukin-1 beta (IL-1beta) is an inflammatory cytokine associated with labor.
Purpose of the Study:
- To investigate the expression of natural antimicrobials in amnion epithelial cells.
- To determine the regulatory effect of IL-1beta on these antimicrobials.
Main Methods:
- Primary amnion epithelial cells were cultured from cesarean section samples.
- Cells were stimulated with IL-1beta.
- Messenger RNA (mRNA) and protein expression of antimicrobials were quantified using real-time PCR and ELISA, respectively.
Main Results:
- Amnion cells express mRNA for human beta defensins (HBD) 1-3, secretory leukocyte protease inhibitor, and elafin.
- IL-1beta significantly upregulated HBD2 mRNA expression in a biphasic manner (51-fold at 6 hours, 67-fold at 12 hours).
- IL-1beta also significantly increased HBD2 protein production within 24 hours.
Conclusions:
- The amnion synthesizes potent natural antimicrobials, contributing to pregnancy protection against infection.
- Interleukin-1 beta (IL-1beta) dramatically enhances the production of HBD2, suggesting a role in labor-associated inflammatory responses.
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