MiR-221/222 Ameliorates Deoxynivalenol-Induced Apoptosis and Proliferation Inhibition in Intestinal Epithelial Cells by Targeting PTEN
文献类型： 外文期刊
作者： Hou, Lianjie 1 ; Tong, Xiong 2 ; Lin, Shuyun 1 ; Yu, Mingfang 1 ; Ye, Wen-Chu 1 ; Xie, Meiying 3 ;
作者机构： 1.Guangzhou Med Univ, Affiliated Hosp 6, Qingyuan City Peoples Hosp, Qingyuan, Peoples R China
2.Guangdong Acad Agr Sci, Inst Anim Sci, State Key Lab Livestock & Poultry Breeding, Guangzhou, Peoples R China
3.Guangdong Ecoengn Polytech, Collaborat Innovat Ctr Plant Pest Management & Bi, Guangzhou, Peoples R China
关键词： miR-221; 222; PTEN; deoxynivalenol; intestinal epithelial cells; proliferation; apoptosis
期刊名称：FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY （ 影响因子：6.684； 五年影响因子：7.219 ）
ISSN： 2296-634X
年卷期： 2021 年 9 卷
页码：
收录情况： SCI
摘要： Intestinal epithelial cells are critical for nutrient absorption and defending against pathogen infection. Deoxynivalenol (Don), the most common mycotoxin, contaminates cereals and food throughout the world, causes serious damage to mammal intestinal mucosa, and appears as intestinal epithelial cell apoptosis and proliferation inhibition. Our previous study has found that milk-derived exosome ameliorates Don-induced intestinal damage, but the mechanism is still not fully understood. In this study, we demonstrated that Don downregulated the expression of miR-221/222 in intestinal epithelial cells, and exosome treatment reversed the inhibitory effect of Don on miR-221/222. Through immunofluorescence and flow cytometry analysis, we identified that miR-221/222 ameliorates Don-induced apoptosis and proliferation inhibition in intestinal epithelial cells. Through bioinformatics analyses and RNA immunoprecipitation analysis, we identified Phosphatase and tensin homolog (PTEN) is the target of miR-221/222. Through the PTEN interfering experiment, we found Don-induced apoptosis and proliferation inhibition relied on PTEN. Finally, through adenovirus to overexpress miR-221/222 in mice intestinal epithelial cells specifically, our results showed that miR-221/222 ameliorated Don-induced apoptosis and proliferation inhibition in intestinal epithelial cells by targeting PTEN. This study not only expands our understanding of how miR-221/222 and the host gene PTEN regulate intestinal epithelial cells defending against Don-induced damage, but also provides a new way to protect the development of the intestine.
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