PMID- 38141180 OWN - NLM STAT- Publisher LR - 20240305 IS - 1536-4844 (Electronic) IS - 1078-0998 (Linking) DP - 2023 Dec 23 TI - Monoclonal Antibody Against Mature Interleukin-18 Ameliorates Colitis in Mice and Improves Epithelial Barrier Function. LID - izad292 [pii] LID - 10.1093/ibd/izad292 [doi] AB - BACKGROUND: Antitumor necrosis factor (TNF)-alpha antibodies have improved the outcome of inflammatory bowel disease (IBD); but half of patients remain unresponsive to treatment. Interleukin-18 (IL-18) gene polymorphism is associated with resistance to anti-TNF-alpha antibodies, but therapies targeting IL-18 have not been clinically applied. Only the mature protein is biologically active, and we aimed to investigate whether specific inhibition of mature IL-18 using a monoclonal antibody (mAb) against a neoepitope of caspase-cleaved mature IL-18 could be an innovative treatment for IBD. METHODS: The expression of precursor and mature IL-18 in patients with UC was examined. Colitis was induced in C57/BL6 mice by administering dextran sulfate sodium (DSS), followed by injection with anti-IL-18 neoepitope mAb. Colon tissues were collected and subjected to histological analysis, immunohistochemistry, immunoblotting, and quantitative polymerase chain reaction. Colon epithelial permeability and microbiota composition were analyzed. RESULTS: Mature IL-18 expression was elevated in colon tissues of patients with active ulcerative colitis. Administration of anti-IL-18 neoepitope mAb ameliorated acute and chronic DSS-induced colitis; reduced interferon-gamma, TNF-alpha, and chemokine (CXC motif) ligand-2 production and epithelial cell permeability; promoted goblet cell function; and altered the intestinal microbiome composition. The suppressive effect of anti-IL-18 neoepitope mAb was superior to that of anti-whole IL-18 mAb. Furthermore, combination therapy with anti-TNF-alpha Ab suppressed acute and chronic colitis additively by suppressing cytokine expressions and reducing cell permeability by upregulating claudin1 and occludin expression. CONCLUSIONS: Anti-IL-18 neoepitope mAb ameliorates acute and chronic colitis, suggesting that this mAb will be an innovative therapeutic option for IBD. CI - (c) The Author(s) 2023. Published by Oxford University Press on behalf of Crohn's & Colitis Foundation. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com. FAU - Ikegami, Shuji AU - Ikegami S AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Maeda, Keiko AU - Maeda K AUID- ORCID: 0000-0001-6477-1865 AD - Department of Endoscopy, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Urano, Takeshi AU - Urano T AD - Department of Biochemistry, Shimane University School of Medicine, Izumo 693-8501, Japan. AD - mAbProtein Co. Ltd., Izumo 693-8501, Japan. FAU - Mu, Jingxi AU - Mu J AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Nakamura, Masanao AU - Nakamura M AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Yamamura, Takeshi AU - Yamamura T AUID- ORCID: 0000-0003-4994-016X AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Sawada, Tsunaki AU - Sawada T AD - Department of Endoscopy, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Ishikawa, Eri AU - Ishikawa E AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Yamamoto, Kenta AU - Yamamoto K AD - Department of Endoscopy, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Muto, Hisanori AU - Muto H AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Oishi, Akina AU - Oishi A AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Iida, Tadashi AU - Iida T AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Mizutani, Yasuyuki AU - Mizutani Y AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Ishikawa, Takuya AU - Ishikawa T AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Kakushima, Naomi AU - Kakushima N AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Furukawa, Kazuhiro AU - Furukawa K AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Ohno, Eizaburo AU - Ohno E AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Honda, Takashi AU - Honda T AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Ishigami, Masatoshi AU - Ishigami M AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. FAU - Kawashima, Hiroki AU - Kawashima H AD - Department of Gastroenterology and Hepatology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan. LA - eng GR - JP19K20667/Japan Society for the Promotion of Science/ GR - A138/Japan Agency for Medical Research and Development, AMED/ PT - Journal Article DEP - 20231223 PL - England TA - Inflamm Bowel Dis JT - Inflammatory bowel diseases JID - 9508162 SB - IM CIN - Inflamm Bowel Dis. 2024 Apr 3;30(4):693-694. PMID: 38442894 CIN - Inflamm Bowel Dis. 2024 Apr 3;30(4):695-696. PMID: 38442897 OAB - We investigate a novel monoclonal antibody that specifically recognizes a neoepitope of caspase-cleaved IL-18 and alleviates dextran sulfate sodium-induced colitis by suppressing the secretion of inflammatory cytokines, improving intestinal epithelial permeability, promoting goblet cell function, and regulating intestinal microbiota. OABL- eng OTO - NOTNLM OT - IL-18 OT - cytokine OT - inflammatory bowel disease OT - ulcerative colitis EDAT- 2023/12/23 22:53 MHDA- 2023/12/23 22:53 CRDT- 2023/12/23 15:35 PHST- 2022/05/20 00:00 [received] PHST- 2023/12/23 22:53 [medline] PHST- 2023/12/23 22:53 [pubmed] PHST- 2023/12/23 15:35 [entrez] AID - 7492619 [pii] AID - 10.1093/ibd/izad292 [doi] PST - aheadofprint SO - Inflamm Bowel Dis. 2023 Dec 23:izad292. doi: 10.1093/ibd/izad292.