Gegen Qinlian Decoction (GQD) Inhibits Ulcerative Colitis by Modulating Ferroptosis-dependent Pathway in Mice and Organoids

Overview

Journal Chin Med

Publisher Biomed Central

Specialty Biomedical Engineering

Date 2023 Aug 30

PMID 37649073

Authors

Xue Wang

Jianye Quan

Chengkui Xiu

Jiali Wang

Jiaqi Zhang

Affiliations

Soon will be listed here.

Abstract

Background: Gegen Qinlian decoction (GQD) is a classic prescription for treating ulcerative colitis (UC) in traditional Chinese medicine. However, the therapeutic mechanism has not been fully clarified.

Purpose: In the present study, we aimed to evaluate the role of ferroptosis-mediated IEC death in UC treated mice with GQD by using DSS-induced a colitis mouse model and RSL3-induced ferroptosis in intestinal organoids.

Methods: The effects of GQD on DSS-treated colitis were examined via daily body weight, DAI, colon length, HE staining, PAS staining, ZO-1 and Occludin immunohistochemical staining. Ferroptosis was determined by analysis of iron load, MDA, GSH, mitochondrial morphology, and expression of ferroptosis-associated proteins (GPX4, SLC7A11 and ACSL4).

Results: In vivo, GQD administration reduced body weight loss and DAI scores, increased colon length, and improved intestinal histological characteristics and epithelial barrier dysfunction. GQD administration obviously improved the levels of ferroptosis markers (iron load, MDA, GSH, and mitochondrial morphology) and the expression of ferroptosis-associated proteins (GPX4, SLC7A11 and ACSL4). Consistent with in vivo results, GQD administration partially reversed the levels of mtROS, Fe2 and MDA in intestinal organoids induced by RSL3, and notably improved morphological destruction, histological damage and epithelial barrier dysfunction in organoids.

Conclusions: In this study, we demonstrated that ferroptosis was triggered in DSS-induced experimental colitis and that GQD adiministration could protect against colonic damage and intestinal epithelial barrier dysfunction by inhibiting ferroptosis.

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