PMID- 34620946 OWN - NLM STAT- MEDLINE DCOM- 20220112 LR - 20240226 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 11 IP - 1 DP - 2021 Oct 7 TI - Irbesartan, an angiotensin II type 1 receptor blocker, inhibits colitis-associated tumourigenesis by blocking the MCP-1/CCR2 pathway. PG - 19943 LID - 10.1038/s41598-021-99412-8 [doi] LID - 19943 AB - The introduction of anti-inflammatory therapies has enabled substantial improvement of disease activity in patients with inflammatory bowel diseases (IBD). However, IBD can lead to serious complications such as intestinal fibrosis and colorectal cancer. Therefore, novel therapies reducing the development of these complications are needed. Angiotensin II (Ang II) promotes tissue inflammation by stimulating the production of monocyte chemoattractant protein-1 (MCP-1) or proinflammatory cytokines. It plays a pivotal role in IBD progression. Although blockade of Ang II has been reported to ameliorate experimental colitis and reduce colorectal cancer risk, the cellular and molecular mechanisms remain poorly understood. Our previous work showed that irbesartan, an Ang II type 1 receptor blocker, reduced the number of C-C chemokine receptor 2-positive (CCR2(+)) monocytic cells in the inflamed pancreas. This study aimed to investigate the possible antifibrotic and antitumour effects of irbesartan using the azoxymethane/dextran sodium sulphate mouse model. Irbesartan suppressed MCP-1 production and the accumulation of Ly6C(+)CCR2(+) monocytes and fibrocytes in the inflamed colon, downregulated the expression of type 1 collagen and matrix metalloproteinase 9 and inhibited the development of intestinal fibrosis and tumours. Our observations suggest that blocking the MCP-1/CCR2 pathway using irbesartan might be beneficial in preventing colitis-associated colon tumours. CI - (c) 2021. The Author(s). FAU - Hachiya, Kensuke AU - Hachiya K AD - Department of Haematology and Oncology, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan. FAU - Masuya, Masahiro AU - Masuya M AD - Department of Haematology and Oncology, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan. mmasuya@med.mie-u.ac.jp. AD - Course of Nursing Science, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, 514-8507, Japan. mmasuya@med.mie-u.ac.jp. FAU - Kuroda, Naoki AU - Kuroda N AD - Department of Gastroenterology, Saiseikai Matsusaka General Hospital, Matsusaka, Mie, 515-8557, Japan. FAU - Yoneda, Misao AU - Yoneda M AD - Department of Clinical Nutrition Medical Technology Course, Suzuka University of Medical Science, Suzuka, Mie, 510-0293, Japan. FAU - Tsuboi, Junya AU - Tsuboi J AD - Department of Gastroenterology and Hepatology, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan. FAU - Nagaharu, Keiki AU - Nagaharu K AD - Department of Haematology and Oncology, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan. FAU - Nishimura, Komei AU - Nishimura K AD - Department of Haematology and Oncology, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan. FAU - Shiotani, Takuya AU - Shiotani T AD - Department of Haematology and Oncology, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan. FAU - Ohishi, Kohshi AU - Ohishi K AD - Department of Transfusion Medicine and Cell Therapy, Mie University Hospital, Tsu, Mie, 514-8507, Japan. FAU - Tawara, Isao AU - Tawara I AD - Department of Haematology and Oncology, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan. FAU - Katayama, Naoyuki AU - Katayama N AD - Department of Haematology and Oncology, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan. AD - Faculty of Nursing, Suzuka University of Medical Science, Suzuka, Mie, 513-8670, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20211007 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Angiotensin II Type 1 Receptor Blockers) RN - 0 (Chemokine CCL2) RN - 0 (Receptors, CCR2) RN - 9042-14-2 (Dextran Sulfate) RN - J0E2756Z7N (Irbesartan) RN - MO0N1J0SEN (Azoxymethane) SB - IM MH - Angiotensin II Type 1 Receptor Blockers/*pharmacology MH - Animals MH - Azoxymethane MH - Carcinogenesis MH - Chemokine CCL2/metabolism MH - Colitis/chemically induced/*complications MH - Colonic Neoplasms/complications/*etiology MH - Dextran Sulfate MH - Irbesartan/*pharmacology MH - Mice, Inbred C57BL MH - Receptors, CCR2/genetics MH - Mice PMC - PMC8497524 COIS- The authors declare no competing interests. EDAT- 2021/10/09 06:00 MHDA- 2022/01/13 06:00 PMCR- 2021/10/07 CRDT- 2021/10/08 06:45 PHST- 2021/07/12 00:00 [received] PHST- 2021/09/20 00:00 [accepted] PHST- 2021/10/08 06:45 [entrez] PHST- 2021/10/09 06:00 [pubmed] PHST- 2022/01/13 06:00 [medline] PHST- 2021/10/07 00:00 [pmc-release] AID - 10.1038/s41598-021-99412-8 [pii] AID - 99412 [pii] AID - 10.1038/s41598-021-99412-8 [doi] PST - epublish SO - Sci Rep. 2021 Oct 7;11(1):19943. doi: 10.1038/s41598-021-99412-8.