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Ma K, Que W, Hu X, Guo WZ, Zhong L, Ueda D, Gu EL, Li XK. Combinations of anti-GITR antibody and CD28 superagonist ameliorated dextran sodium sulfate-induced mouse colitis. Clin Exp Immunol 2022; 208:340-350. [PMID: 35511600 PMCID: PMC9226153 DOI: 10.1093/cei/uxac039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/14/2022] [Accepted: 05/02/2022] [Indexed: 11/12/2022] Open
Abstract
Ulcerative colitis (UC) is one of the two main forms of inflammatory bowel disease (IBD) and is an idiopathic, chronic inflammatory disease of the colonic mucosa with an unclear etiology. Interleukin (IL)-10 has been reported to play a crucial role in the maintenance of immune homeostasis in the intestinal environment. Type 1 regulatory T (Tr1) cells are a subset of CD4+Foxp3- T cells able to secrete high amounts of IL-10 with potent immunosuppressive properties. In this study, we found that the combination of anti-GITR antibody (G3c) and CD28 superagonist (D665) treatment stimulated the generation of a large amount of Tr1 cells. Furthermore, G3c/D665 treatment not only significantly relieved severe mucosal damage but also reduced the incidence of colonic shortening, weight loss, and hematochezia. Dextran sodium sulfate (DSS) upregulated the mRNA levels of IL-6, IL-1β, IL-17, IL-12, tumor necrosis factor-alpha, C-C chemokine receptor type 5, and Bax in splenic lymphocytes (SPLs) and colon tissues, while G3c/D665 treatment conversely inhibited the increase in mRNA levels of these genes. In addition, G3c/D665 treatment altered the proportion of CD4+ and CD8+ T cells and increased CD4+CD25+Foxp3+ regulatory T cells in SPLs, mesenteric lymph nodes (MLNs), and lamina propria lymphocytes (LPLs). Thus, the combination of G3c and D665 treatment showed efficacy against DSS-induced UC in mice by inducing a large amount of Tr1 cell generation via the musculoaponeurotic fibrosarcoma pathways in vivo and relieving inflammatory responses both systematically and locally.
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Affiliation(s)
- Kuai Ma
- Department of Gastroenterology and Hepatology, Jing'an District Central Hospital, Jing'an Branch of Huashan Hospital, Fudan University, Shanghai, China.,Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Weitao Que
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Xin Hu
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Wen-Zhi Guo
- Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Liang Zhong
- Department of Gastroenterology, Huashan Hospital, Fudan University, Shanghai, China
| | - Daisuke Ueda
- Division of Hepato-Pancreato-Biliary Surgery and Transplantation, Department of Surgery, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Er-Li Gu
- Department of Gastroenterology and Hepatology, Jing'an District Central Hospital, Jing'an Branch of Huashan Hospital, Fudan University, Shanghai, China
| | - Xiao-Kang Li
- Division of Transplantation Immunology, National Research Institute for Child Health and Development, Tokyo, Japan.,Department of Hepatobiliary and Pancreatic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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