PMID- 31503404 OWN - NLM STAT- MEDLINE DCOM- 20201019 LR - 20210110 IS - 1753-0407 (Electronic) IS - 1753-0393 (Print) IS - 1753-0407 (Linking) VI - 12 IP - 3 DP - 2020 Mar TI - Faecalibacterium prausnitzii-derived microbial anti-inflammatory molecule regulates intestinal integrity in diabetes mellitus mice via modulating tight junction protein expression. PG - 224-236 LID - 10.1111/1753-0407.12986 [doi] AB - BACKGROUND: Impaired intestinal barrier structure and function have been validated as an important pathogenic process in type 2 diabetes mellitus (T2DM). Gut dysbiosis is thought to be the critical factor in diabetic intestinal pathogenesis. As the most abundant commensal bacteria, Faecalibacterium prausnitzii (F. prausnitzii) play important roles in gut homeostasis. The microbial anti-inflammatory molecule (MAM), an F. prausnitzii metabolite, has anti-inflammatory potential in inflammatory bowel disease (IBD). Thus, we aimed to explore the function and mechanism of MAM on the diabetic intestinal epithelium. METHODS: 16S high-throughput sequencing was used to analyze the gut microbiota of db/db mice (T2DM mouse model). We transfected a FLAG-tagged MAM plasmid into human colonic cells to explore the protein-protein interactions and observe cell monolayer permeability. For in vivo experiments, db/db mice were supplemented with recombinant His-tagged MAM protein from E. coli BL21 (DE3). RESULTS: The abundance of F. prausnitzii was downregulated in the gut microbiota of db/db mice. Immunoprecipitation (IP) and mass spectroscopy (MS) analyses revealed that MAM potentially interacts with proteins in the tight junction pathway, including zona occludens 1 (ZO-1). FLAG-tagged MAM plasmid transfection stabilized the cell permeability and increased ZO-1 expression in NCM460, Caco2, and HT-29 cells. The db/db mice supplemented with recombinant His-tagged MAM protein showed restored intestinal barrier function and elevated ZO-1 expression. CONCLUSIONS: Our study shows that MAM from F. prausnitzii can restore the intestinal barrier structure and function in DM conditions via the regulation of the tight junction pathway and ZO-1 expression. CI - (c) 2019 The Authors. Journal of Diabetes published by Ruijin Hospital, Shanghai Jiaotong University School of Medicine and John Wiley & Sons Australia, Ltd. FAU - Xu, Jihao AU - Xu J AD - Department of Gastroenterology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China. FAU - Liang, Rongrong AU - Liang R AD - Department of Pediatrics, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China. FAU - Zhang, Wang AU - Zhang W AD - Department of Gastroenterology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China. AD - Department of Gastroenterology, Guangdong Provincial Hospital of Chinese Medicine (2nd Clinical Hospital of Guangzhou University of Chinese Medicine), Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, People's Republic of China. FAU - Tian, Kuangyi AU - Tian K AD - Department of Gastroenterology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China. FAU - Li, Jieyao AU - Li J AD - Department of Gastroenterology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China. FAU - Chen, Xianming AU - Chen X AD - Department of Medical Microbiology and Immunology, Creighton University School of Medicine, Omaha, Nebraska. FAU - Yu, Tao AU - Yu T AUID- ORCID: 0000-0003-4939-8956 AD - Department of Gastroenterology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China. FAU - Chen, Qikui AU - Chen Q AD - Department of Gastroenterology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China. LA - eng GR - 81370475/National Natural Science Foundation of China/ GR - 2017A030313647/Natural Science Foundation of Guangdong Province/ PT - Journal Article DEP - 20191030 PL - Australia TA - J Diabetes JT - Journal of diabetes JID - 101504326 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Tight Junction Proteins) SB - IM MH - Animals MH - Anti-Inflammatory Agents/*metabolism/pharmacology MH - Caco-2 Cells MH - Diabetes Mellitus, Type 2/genetics/*metabolism MH - Dysbiosis/genetics/physiopathology MH - Faecalibacterium prausnitzii/*metabolism MH - Gastrointestinal Microbiome/drug effects/genetics/physiology MH - Gene Expression/drug effects MH - HEK293 Cells MH - HT29 Cells MH - Humans MH - Inflammatory Bowel Diseases/genetics/metabolism MH - Intestinal Mucosa/drug effects/*metabolism MH - Mice MH - Permeability/drug effects MH - Tight Junction Proteins/genetics/*metabolism MH - Tight Junctions/drug effects/*metabolism PMC - PMC7064962 OTO - NOTNLM OT - Faecalibacterium prausnitzii OT - diabetes mellitus OT - diabetic pathology OT - gut microbiota OT - intestinal barrier OT - 普拉梭菌 OT - 糖尿病 OT - 糖尿病病变 OT - 肠道屏障 OT - 肠道菌群 EDAT- 2019/09/11 06:00 MHDA- 2020/10/21 06:00 PMCR- 2020/03/11 CRDT- 2019/09/11 06:00 PHST- 2019/06/03 00:00 [received] PHST- 2019/08/28 00:00 [revised] PHST- 2019/09/06 00:00 [accepted] PHST- 2019/09/11 06:00 [pubmed] PHST- 2020/10/21 06:00 [medline] PHST- 2019/09/11 06:00 [entrez] PHST- 2020/03/11 00:00 [pmc-release] AID - JDB12986 [pii] AID - 10.1111/1753-0407.12986 [doi] PST - ppublish SO - J Diabetes. 2020 Mar;12(3):224-236. doi: 10.1111/1753-0407.12986. Epub 2019 Oct 30.