LGR5 and BMI1 Increase Pig Intestinal Epithelial Cell Proliferation by Stimulating WNT/beta-Catenin Signaling
文献类型： 外文期刊
第一作者： Li, Xiang-Guang
作者： Li, Xiang-Guang;Chen, Rong-Qiang;Fu, Hou-Long;Gao, Chun-Qi;Yan, Hui-Chao;Wang, Xiu-Qi;Li, Xiang-Guang;Wang, Zhe;Xing, Guang-Xu
作者机构：
关键词： LGR5; BMI1; WNT/beta-catenin signaling; cell proliferation; intestinal epithelial cells
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）
ISSN： 1422-0067
年卷期： 2018 年 19 卷 4 期
页码：
收录情况： SCI
摘要： Leucine-rich repeat-containing G protein-coupled receptor 5 (LGR5) and B-cell-specific Moloney murine leukemia virus insertion site 1 (BMI1) are markers of fast-cycling and quiescent intestinal stem cells, respectively. To determine the functions of these proteins in large animals, we investigated their effects on the proliferation of intestinal epithelial cells from pigs. Our results indicated that LGR5 and BMI1 are highly conserved proteins and that the pig proteins have greater homology with the human proteins than do mouse proteins. Overexpression of either LGR5 or BMI1 promoted cell proliferation and WNT/beta-catenin signaling in pig intestinal epithelial cells (IPEC-J2). Moreover, the activation of WNT/beta-catenin signaling by recombinant human WNT3A protein increased cell proliferation and LGR5 and BMI1 protein levels. Conversely, inhibition of WNT/beta-catenin signaling using XAV939 reduced cell proliferation and LGR5 and BMI1 protein levels. This is the first report that LGR5 and BMI1 can increase proliferation of pig intestinal epithelial cells by activating WNT/beta-catenin signaling.
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