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Related Experiment Video

Updated: Mar 21, 2026

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Hsa-miRNA-31 regulates epithelial cell barrier function by inhibiting TNFSF15 expression.

X Nan1, S Qin2, Z Yuan2

  • 1Shihezi University Shihezi China.

Cellular and Molecular Biology (Noisy-Le-Grand, France)
|May 19, 2016
PubMed
Summary
This summary is machine-generated.

MicroRNA-31 enhances intestinal epithelial barrier function by promoting cell proliferation and reducing apoptosis. This microRNA-31 plays a key role in regulating epithelial barrier integrity in ulcerative colitis.

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Area of Science:

  • Gastroenterology
  • Molecular Biology
  • Cell Biology

Background:

  • Ulcerative colitis (UC) involves epithelial barrier disruption and immune dysregulation, with unknown causes.
  • MicroRNA-31 is consistently altered in UC tissues, suggesting a potential role in the disease.

Purpose of the Study:

  • To investigate the role of microRNA-31 in regulating intestinal epithelial barrier function.
  • To elucidate the molecular mechanisms by which microRNA-31 impacts epithelial cells.

Main Methods:

  • Utilized Caco2-BBE cell models to study microRNA-31 expression and function.
  • Assessed trans-epithelial resistance (TER) and permeability to evaluate barrier function.
  • Performed molecular analyses including 3-UTR binding assays and BrdU/TUNEL assays.

Main Results:

  • MicroRNA-31 expression correlated positively with Caco2-BBE cell proliferation.
  • Overexpression of microRNA-31 increased TER and decreased transepithelial permeability.
  • MicroRNA-31 directly targets TNFSF15, inhibiting its expression.
  • MicroRNA-31 promoted cell proliferation and apoptosis resistance.

Conclusions:

  • MicroRNA-31 is a key regulator of intestinal epithelial barrier function.
  • It enhances barrier integrity by promoting cell proliferation and apoptosis resistance.
  • These findings reveal a novel mechanism involving microRNA-31 in epithelial homeostasis relevant to UC.