miR-329b-5p Affects Sheep Intestinal Epithelial Cells against Escherichia coli F17 Infection

文献类型： 外文期刊

第一作者： Xu, Yeling

作者： Xu, Yeling;Chen, Weihao;Sun, Wei;Yang, Huiguo;Song, Zhenghai;Wang, Yeqing;Su, Rui;Mwacharo, Joram M.;Lv, Xiaoyang;Sun, Wei;Lv, Xiaoyang;Sun, Wei

作者机构：

关键词： Escherichia coli F17; micro RNA; sheep diarrhea; intestinal epithelial cells

期刊名称：VETERINARY SCIENCES （ 影响因子：2.4； ）

ISSN：

年卷期： 2024 年 11 卷 5 期

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收录情况： SCI

摘要： Sheep diarrhea is one of the most common illnesses in sheep farming and diarrhea in sheep caused by E. coli occupies a significant proportion of them. E. coli F17 is one of the main members of E. coli causing diarrhea in sheep. This study is devoted to improving the resistance of sheep itself to E. coli F17. This study provides theoretical support for the solution of E. coli F17-caused diarrhea in sheep. Diarrhea is the most common issue in sheep farms, typically due to pathogenic Escherichia coli (E. coli) infections, such as E. coli F17. microRNA, a primary type of non-coding RNA, has been shown to be involved in diarrhea caused by pathogenic E. coli. To elucidate the profound mechanisms of miRNA in E. coli F17 infections, methods such as E. coli F17 adhesion assay, colony counting assay, relative quantification of bacterial E. coli fimbriae gene expression, indirect immune fluorescence (IF), Cell Counting Kit-8 (CCK-8), 5-ethynyl-2 '-deoxyuridine (EdU), Western blotting (WB), and scratch assay were conducted to investigate the effect of miR-329b-5p overexpression/knock-down on E. coli F17 susceptibility of sheep intestinal epithelial cells (IECs). The findings indicated that miR-329b-5p enhances the E. coli F17 resistance of sheep IECs to E.coli F17 by promoting adhesion between E. coli F17 and IEC, as well as IEC proliferation and migration. In summary, miR-329b-5p plays a crucial role in the defense of sheep IECs against E. coli F17 infection, providing valuable insights into its mechanism of action.

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