Abstract

To discuss the influence on proliferation and apoptosis of human intestinal epithelial cells by Helicobacter pylori (Hp). CCK-8 method and flow cytometry to test the influence on proliferation and apoptosis of intestinal epithelial cells by Hp and cell cycle distribution. Immunocytochemistry, qRT-PCR, and WB to analyze the expression and activation of ACVR1. Functional studies of TNBS-induced IBD on mice and DSS-induced IBD on C57BL/6J mice with HP used for intervention were also performed. Hp facilitated the proliferation of intestinal epithelial cells with the breeding ratios on the first and third day are 5.24% ± 3.26% and 34.18% ± 6.68% respectively. ACVR1 is activated and the expression of anti-apoptosis protein Bcl-2 and Bcl-XL is up-regulated. In vivo, TNBS-induced and Hp-induced exhibited inflammatory lesions of intestine, ACVR1 and Bcl-2 higher expressions as compared to wild-type mice. Hp is likely to play a very important role in the proliferation, apoptosis, and malignant transformation of intestinal epithelial cells through ACVR1 pathway.

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