Abstract Title:

Cytoprotective effects of galacto-oligosaccharides on colon epithelial cells via up-regulating miR-19b.

Abstract Source:

Life Sci. 2019 Aug 15 ;231:116589. Epub 2019 Jun 19. PMID: 31226416

Abstract Author(s):

Jinwei Sun, Wenxing Liang, Xiaofeng Yang, Qiming Li, Guofang Zhang

Article Affiliation:

Jinwei Sun


AIMS: Despite the protective effect of galacto-oligosaccharides (GOS) on human colon has been widely-reported, the mechanism of its beneficial effect is still unclear. This paper aims to reveal the internal mechanism underlined the anti-colitis effect of GOS by studying its regulatory effect on miRNAs.

MAIN METHODS: An in vitro model of colitis was constructed by using human colon epithelial FHC cells and lipopolysaccharide (LPS). An in vivo colitis model was established as well, by injecting Rag2Sprague-Dawley (SD) rats with helicobacter hepaticus. The effects of GOS pre-treatment on these two models were tested, and the miRNAs involved in these effects were studied.

KEY FINDINGS: The expression of miR-19b, miR-590-5p and miR-495 was up-regulated, and the expression of miR-29a, miR-31 and miR-142-5p was down-regulated by GOS treatment in both normal and LPS-stimulated FHC cells. Among which, miR-19b was the most varied miRNA. GOS pre-treatment significantly attenuated LPS-induced cell injury, as evidenced by the increase of cell viability, the decrease of apoptosis, as well as the suppressed release of TNF-α, IFN-γ and IL-1β. GOS pre-treatment could also prevent Rag2rats against helicobacter hepaticus injection induced diarrhea and inflammation, as the body weight and colon organ weight were recovered, diarrhea score was declined, and the release of pro-inflammatory cytokines was inhibited. The in vitro and in vivo effects of GOS abovementioned were all impeded when miR-19b was silenced.

SIGNIFICANCE: In vitro and in vivo experiments showed that GOS have certain anti-colitis effect, and this effect may be achieved by up-regulating miR-19b.

Print Options

Sayer Ji
Founder of GreenMedInfo.com

Subscribe to our informative Newsletter & get Nature's Evidence-Based Pharmacy

Our newsletter serves 500,000 with essential news, research & healthy tips, daily.

Download Now

500+ pages of Natural Medicine Alternatives and Information.

This website is for information purposes only. By providing the information contained herein we are not diagnosing, treating, curing, mitigating, or preventing any type of disease or medical condition. Before beginning any type of natural, integrative or conventional treatment regimen, it is advisable to seek the advice of a licensed healthcare professional.

© Copyright 2008-2022 GreenMedInfo.com, Journal Articles copyright of original owners, MeSH copyright NLM.