PMID- 37301121 OWN - NLM STAT- MEDLINE DCOM- 20230726 LR - 20230726 IS - 1878-1705 (Electronic) IS - 1567-5769 (Linking) VI - 121 DP - 2023 Aug TI - Macrophage-derived exosomes promote intestinal mucosal barrier dysfunction in inflammatory bowel disease by regulating TMIGD1 via mircroRNA-223. PG - 110447 LID - S1567-5769(23)00770-1 [pii] LID - 10.1016/j.intimp.2023.110447 [doi] AB - BACKGROUND & AIM: Exosomes are effective mediators of cell-to-cell interactions and transport several regulatory molecules, including microRNAs (miRNAs), involved in diverse fundamental biological processes. The role of macrophage-derived exosomes in the development of inflammatory bowel disease (IBD) has not been previously reported. This study investigated specific miRNAs in macrophage-derived exosomes in IBD and their molecular mechanism. METHODS: A dextran sulfate sodium (DSS)-induced IBD mouse model was established. The culture supernatant of murine bone marrow-derived macrophages (BMDMs) cultured with or without lipopolysaccharide (LPS) was used for isolating exosomes, which were subjected to miRNA sequencing. Lentiviruses were used to alter miRNA expression and investigate the role of macrophage-derived exosomal miRNAs. Both mouse and human organoids were co-cultured with macrophages in a Transwell system to model cellular IBD in vitro. RESULTS: LPS-induced macrophages released exosomes containing various miRNAs and exacerbated IBD. Based on miRNA sequencing of macrophage-derived exosomes, miR-223 was selected for further analysis. Exosomes with upregulated miR-223 expression contributed to the exacerbation of intestinal barrier dysfunction in vivo, which was further verified using both mouse and human colon organoids. Furthermore, time-dependent analysis of the mRNAs in DSS-induced colitis mouse tissue and miR-223 target gene prediction were performed to select the candidate gene, resulting in the identification of the barrier-related factor Tmigd1. CONCLUSION: Macrophage-derived exosomal miR-223 has a novel role in the progression of DSS-induced colitis by inducing intestinal barrier dysfunction through the inhibition of TMIGD1. CI - Copyright (c) 2023. Published by Elsevier B.V. FAU - Chang, Xin AU - Chang X AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China; Department of Gastroenterology, the General Hospital of Central Theater Command, Wuhan, China. FAU - Song, Yi-Hang AU - Song YH AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. FAU - Xia, Tian AU - Xia T AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. FAU - He, Zi-Xuan AU - He ZX AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. FAU - Zhao, Sheng-Bing AU - Zhao SB AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. FAU - Wang, Zhi-Jie AU - Wang ZJ AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. FAU - Gu, Lun AU - Gu L AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. FAU - Li, Zhao-Shen AU - Li ZS AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. FAU - Xu, Can AU - Xu C AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. Electronic address: xxcc211@126.com. FAU - Wang, Shu-Ling AU - Wang SL AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. Electronic address: wangshuling0000@126.com. FAU - Bai, Yu AU - Bai Y AD - Department of Gastroenterology, Changhai Hospital, Naval Medical University, Shanghai, China. Electronic address: baiyu1998@hotmail.com. LA - eng PT - Journal Article DEP - 20230608 PL - Netherlands TA - Int Immunopharmacol JT - International immunopharmacology JID - 100965259 RN - 0 (Lipopolysaccharides) RN - 0 (MicroRNAs) RN - 0 (TMIGD1 protein, human) RN - 0 (Membrane Glycoproteins) SB - IM MH - Humans MH - Mice MH - Animals MH - *Exosomes/metabolism MH - Lipopolysaccharides/pharmacology MH - *Inflammatory Bowel Diseases/metabolism MH - *MicroRNAs/genetics MH - *Colitis/chemically induced MH - Macrophages/metabolism MH - Membrane Glycoproteins/metabolism OTO - NOTNLM OT - Exosomes OT - Inflammatory bowel disease OT - Macrophage OT - Transmembrane and immunoglobulin domain-containing protein 1 OT - microRNA-223 COIS- Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/06/11 01:06 MHDA- 2023/07/26 06:43 CRDT- 2023/06/10 18:09 PHST- 2023/03/24 00:00 [received] PHST- 2023/05/31 00:00 [revised] PHST- 2023/06/01 00:00 [accepted] PHST- 2023/07/26 06:43 [medline] PHST- 2023/06/11 01:06 [pubmed] PHST- 2023/06/10 18:09 [entrez] AID - S1567-5769(23)00770-1 [pii] AID - 10.1016/j.intimp.2023.110447 [doi] PST - ppublish SO - Int Immunopharmacol. 2023 Aug;121:110447. doi: 10.1016/j.intimp.2023.110447. Epub 2023 Jun 8.