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Author Spotlight: Investigating the Potential of Chinese Herbal Medicinal Active Dioscin in Treating IgA Nephropathy
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Dioscin promotes autophagy by regulating the AMPK-mTOR pathway in ulcerative colitis

Han Li1, Bo Pang1, Bin Nie1

  • 1Department of Geriatrics, The Sixth Hospital of Wuhan, Affiliated Hospital of Jianghan University, Wuhan, China.

Immunopharmacology and Immunotoxicology
|February 17, 2022
PubMed
Abstract

Insights

Dioscin alleviates ulcerative colitis (UC) by enhancing autophagy. It achieves this by activating AMPK signaling, which inhibits mTOR, thereby reducing inflammation and oxidative stress in a mouse model.

Area of Science:

  • Pharmacology
  • Cell Biology
  • Gastroenterology

Background:

  • Dioscin demonstrates potential in mitigating dextran sodium sulfate (DSS)-induced ulcerative colitis (UC) in murine models.
  • Autophagy is recognized for its anti-inflammatory functions in the context of UC.
  • This study investigates the specific role of dioscin in modulating autophagy within UC.

Purpose of the Study:

  • To elucidate the biological mechanisms through which dioscin influences autophagy in ulcerative colitis.
  • To assess the therapeutic potential of dioscin in a DSS-induced mouse model of UC.

Main Methods:

  • Establishment of a DSS-induced mouse model to mimic UC.
  • Monitoring of clinical and macroscopic disease parameters, including body weight and colonic damage.
  • Histopathological evaluation using Hematoxylin & Eosin (HE) staining.
  • Biochemical assays for oxidative stress markers (glutathione, superoxidative dismutase, malondialdehyde).
  • Western blotting to quantify key proteins in the AMPK/mTOR signaling pathway and autophagy-related genes.

Main Results:

  • Dioscin treatment significantly ameliorated DSS-induced colitis and associated oxidative stress in mice.
  • Dioscin administration promoted the phosphorylation of AMPK, leading to the inhibition of mTOR activation.
  • Enhanced autophagy was observed in the colons of mice treated with dioscin.

Conclusions:

  • Dioscin promotes autophagy in the context of ulcerative colitis.
  • The mechanism involves the activation of AMPK-mediated inhibition of mTOR signaling.
  • These findings highlight dioscin as a potential therapeutic agent for UC via autophagy modulation.
Keywords:
AMPK-mTOR pathwayDSS-induced mice modelDioscinautophagyulcerative colitis

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