Shoujuan Yu, Xifan Wang, Ziyang Li, Dekui Jin, Mengyang Yu, Jingnan Li, Yixuan Li, Xiaoxue Liu, Qi Zhang, Yinghua Liu, Rong Liu, Xiaoyu Wang, Bing Fang, Chengying Zhang, Ran Wang, Fazheng Ren
Journal of translational medicine 2024 Feb 17Adenomatous polyps (APs) with inflammation are risk factors for colorectal cancer. However, the role of inflammation-related gut microbiota in promoting the progression of APs is unknown. Sequencing of the 16S rRNA gene was conducted to identify characteristic bacteria in AP tissues and normal mucosa. Then, the roles of inflammation-related bacteria were clarified by Spearman correlation analysis. Furthermore, colorectal HT-29 cells, normal colon NCM460 cells, and azoxymethane-treated mice were used to investigate the effects of the characteristic bacteria on progression of APs. The expression levels of inflammation-related markers (diamine oxidase, D-lactate, C-reactive protein, tumor necrosis factor-α, interleukin-6 and interleukin-1β) were increased, whereas the expression levels of anti-inflammatory factors (interleukin-4 and interleukin-10) were significantly decreased in AP patients as compared to healthy controls. Solobacterium moorei (S. moorei) was enriched in AP tissues and fecal samples, and significantly positively correlated with serum inflammation-related markers. In vitro, S. moorei preferentially attached to HT-29 cells and stimulated cell proliferation and production of pro-inflammatory factors. In vivo, the incidence of intestinal dysplasia was significantly increased in the S. moorei group. Gavage of mice with S. moorei upregulated production of pro-inflammatory factors, suppressed proliferation of CD4+ and CD8+cells, and disrupted the integrity of the intestinal barrier, thereby accelerating progression of APs. S. moorei accelerated the progression of AP in mice via activation of the NF-κB signaling pathway, chronic low-grade inflammation, and intestinal barrier disruption. Targeted reduction of S. moorei presents a potential strategy to prevent the progression of APs. © 2024. The Author(s).
Shoujuan Yu, Xifan Wang, Ziyang Li, Dekui Jin, Mengyang Yu, Jingnan Li, Yixuan Li, Xiaoxue Liu, Qi Zhang, Yinghua Liu, Rong Liu, Xiaoyu Wang, Bing Fang, Chengying Zhang, Ran Wang, Fazheng Ren. Solobacterium moorei promotes the progression of adenomatous polyps by causing inflammation and disrupting the intestinal barrier. Journal of translational medicine. 2024 Feb 17;22(1):169
PMID: 38368407
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