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Duan S, Cao Y, Chen P, Yang Y, Zhang Y. Circulating and intestinal regulatory T cells in inflammatory bowel disease: A systemic review and meta-analysis. Int Rev Immunol 2023; 43:83-94. [PMID: 37615427 DOI: 10.1080/08830185.2023.2249525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 07/17/2023] [Indexed: 08/25/2023]
Abstract
Regulatory T cells (Tregs) play an important immunosuppressive role in inflammatory bowel disease (IBD). However, findings on the quantitative and functional changes of intestinal and circulating Tregs in patients with IBD are rather contradictory. We therefore conducted a meta-analysis on this issue. The pooled effect was assessed using the standardized mean difference (SMD) with a 95% confidence interval (CI), and subgroup analyses were performed to investigate heterogeneity. This analysis included 764 IBD (402 UC and 362 CD) patients and 341 healthy controls (HCs) pooled from 17 eligible studies. The percentage of circulating Tregs was significantly decreased in active IBD patients compared to HCs (SMD = -0.95, p < 0.001) and inactive IBD patients (SMD = -0.80, p < 0.001). There was no difference in the percentage of circulating Tregs between inactive IBD patients and HCs. The suppressive function of circulating Tregs was impaired in active IBD patients according to limited data (SMD = -0.75, p = 0.02). Besides, the percentage of intestinal Tregs was significantly higher in inflamed regions than in non-inflamed regions (SMD = 0.85, p < 0.001). Our study quantitatively summarized the quantitative and functional changes of Tregs and supported the therapeutic potential of Tregs in IBD. Moreover, additional research into the functions and characteristics of intestinal Tregs in IBD is needed.
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Affiliation(s)
- Shihao Duan
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Yubin Cao
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Pingrun Chen
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Yi Yang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Zhang
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu, China
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Qi L, Wu J, Zhu S, Wang X, Lv X, Liu C, Liu YJ, Chen J. Mesenchymal Stem Cells Alleviate Inflammatory Bowel Disease Via Tr1 Cells. Stem Cell Rev Rep 2022; 18:2444-2457. [PMID: 35274217 DOI: 10.1007/s12015-022-10353-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2022] [Indexed: 01/08/2023]
Abstract
Mesenchymal stem cells (MSCs) have been used to achieve exciting therapeutic outcomes in many animal studies and clinical trials for various autoimmune diseases, including inflammatory bowel disease (IBD). Type 1 regulatory T (Tr1) cells are the main source of interleukin (IL) 10 in the intestine. Whether Tr1 cells are involved during MSC-mediated IBD treatment is unclear. We treated a murine model of 2,4,6-trinitrobenzene sulfonic acid (TNBS)-induced colitis with human umbilical cord-derived MSCs (hUCMSCs) and found that the disease severity was alleviated significantly in a dose-dependent manner. hUCMSCs increased the proportion of Tr1 cells and decreased that of T helper (Th)-1 and Th17 cells in the spleen and mesenteric lymph nodes in different stages of colitis. We found that the upregulation of Tr1 cells by hUCMSCs was abrogated after blocking indoleamine-2,3-dioxygenase (IDO), and IDO knockdown in hUCMSCs reversed the increase in Tr1 cell proportions caused by hUCMSCs in colitis. Moreover, hUCMSCs inhibited apoptosis and promoted the proliferation of Tr1 cells. Our results suggest that Tr1 cells play an important role in the amelioration of IBD by MSCs, and they are the target population for the alleviation of IBD by MSCs, providing meaningful references for the study of therapeutic mechanisms of MSCs in other inflammatory diseases.
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Affiliation(s)
- Lingli Qi
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130061, China.,Department of Pediatric Gastroenterology, The First Hospital of Jilin University, Changchun, China
| | - Jing Wu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130061, China
| | - Shan Zhu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130061, China
| | - Xue Wang
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130061, China.,Department of Jilin City Institute of Biological Products, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Science (CAS), Jilin, China
| | - Xinping Lv
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130061, China
| | - Chunyan Liu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130061, China
| | - Yong-Jun Liu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130061, China.
| | - Jingtao Chen
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130061, China.
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Li M, Luo T, Huang Y, Su J, Li D, Chen X, Zhang Y, Huang L, Li S, Jiao C, Li W, Xie Y, Li W. Polysaccharide from Pycnoporus sanguineus ameliorates dextran sulfate sodium-induced colitis via helper T cells repertoire modulation and autophagy suppression. Phytother Res 2020; 34:2649-2664. [PMID: 32281697 DOI: 10.1002/ptr.6695] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/12/2020] [Accepted: 03/21/2020] [Indexed: 12/13/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic autoimmune disease associated with various risk factors. Pycnoporus sanguineus (L.) Murrill is a saprotrophic fungus used worldwide for its industrial and medical purposes. Here, polysaccharide from P. sanguineus (PPS) was explored for its antiinflammatory potential in a murine colitis model of IBD induced by dextran sulfate sodium (DSS). PPS ameliorated the colitis as manifested by the lowered disease activity index (DAI), prolonged colon, and reduced serum lipopolysaccharide (LPS). PPS recovered the histological lesion by upregulating the expressions of Zonula occludens-1 (ZO-1), E-cadherin, and proliferating cell nuclear antigen (PCNA). PPS inhibited the helper T cells (Th)-mediated immune response by decreasing the proportions of Th cells (including Th2 cells, Th17 cells, and regulatory T cells), which was accompanied with reductions on myeloperoxidase (MPO) activity and releases of several interleukins and chemokines within the colon. Moreover, PPS exhibited an evident inhibition on autophagy, in which the ratio of light chain 3 (LC3) II/I was declined, while the expression of p62 and Beclin-1 was increased. The present study highlighted important clinical implications for the treatment application of PPS against IBD, which relies on the regulation of Th cells repertoire and autophagy suppression to restore epithelium barrier.
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Affiliation(s)
- Muxia Li
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratoryof Applied Microbiology, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, People's Republic of China
| | - Ting Luo
- Jinan University, Guangzhou, Guangdong, People's Republic of China.,Guangdong Laboratory Animals Monitoring Institute, Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, Guangdong, People's Republic of China
| | - Yong Huang
- Department of Gastrointestinal Surgery, Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, People's Republic of China
| | - Jiyan Su
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratoryof Applied Microbiology, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, People's Republic of China
| | - Dan Li
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratoryof Applied Microbiology, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, People's Republic of China.,Guangdong Yuewei Edible Fungi Technology Co. Ltd., Guangzhou, Guangdong, People's Republic of China
| | - Xiaohong Chen
- Guangdong Provincial Key Laboratory of New Drug Development and Research of Chinese Medicine, Mathematical Engineering Academy of Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, People's Republic of China.,State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratoryof Applied Microbiology, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, People's Republic of China.,Guangdong Yuewei Edible Fungi Technology Co. Ltd., Guangzhou, Guangdong, People's Republic of China
| | - Yifan Zhang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratoryof Applied Microbiology, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, People's Republic of China
| | - Longhua Huang
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratoryof Applied Microbiology, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, People's Republic of China
| | - Shunxian Li
- Guangdong Yuewei Edible Fungi Technology Co. Ltd., Guangzhou, Guangdong, People's Republic of China
| | - Chunwei Jiao
- Guangdong Yuewei Edible Fungi Technology Co. Ltd., Guangzhou, Guangdong, People's Republic of China
| | - Wenzhi Li
- Infinitus (China) Company Ltd., Guangzhou, Guangdong, People's Republic of China
| | - Yizhen Xie
- State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Open Laboratoryof Applied Microbiology, Guangdong Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, Guangdong, People's Republic of China.,Guangdong Yuewei Edible Fungi Technology Co. Ltd., Guangzhou, Guangdong, People's Republic of China
| | - Wende Li
- Guangdong Laboratory Animals Monitoring Institute, Guangdong Provincial Key Laboratory of Laboratory Animals, Guangzhou, Guangdong, People's Republic of China
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Long Y, Wang C, Xia C, Li X, Fan C, Zhao X, Liu C. Recovery of CD226-TIGIT +FoxP3 + and CD226-TIGIT-FoxP3 + regulatory T cells contributes to clinical remission from active stage in ulcerative colitis patients. Immunol Lett 2019; 218:30-39. [PMID: 31883787 DOI: 10.1016/j.imlet.2019.12.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 12/16/2019] [Accepted: 12/24/2019] [Indexed: 12/31/2022]
Abstract
PURPOSE Ulcerative colitis (UC) is a chronic inflammatory immune-related disease. Imbalance between pathogenic cells and immunosuppressive cells is associated with disease activity of UC. Regulatory T cells (Tregs) are critical for this immune homeostasis. However, the clinical significance of CD226 and TIGIT expressions on FoxP3+Tregs in UC remains unclear. METHODS Comprehensive analyses of CD226 and TIGIT expressions on FoxP3+Tregs were performed by flow cytometry in 72 UC patients and 35 healthy controls, and ten active UC patients achieving remission after treatment with 5-aminosalicylic acid were followed up. Expressions of β7, α4 and αE on FoxP3+Tregs were analyzed. Clinical indicators were retrospectively acquired and serum cytokines were detected using ELISA, and their correlations with FoxP3+Treg subsets were conducted. RESULTS In active UC, levels of FoxP3+Tregs and CD226-FoxP3+Tregs regardless of TIGIT expression were significantly decreased while percentages of CD226+TIGIT-FoxP3+Tregs and CD226+TIGIT+FoxP3+Tregs were obviously increased. The expressions of β7, α4β7 and αEβ7 in FoxP3+Tregs, CD226-TIGIT+FoxP3+Tregs and CD226-TIGIT-FoxP3+Tregs were significantly elevated in active UC. Furthermore, inverse correlations were found between FoxP3+Tregs, CD226-TIGIT+FoxP3+Tregs, CD226-TIGIT-FoxP3+Tregs and serum CRP, as well as Mayo scores. IL-10 was reduced and positively correlated with CD226-TIGIT+FoxP3+Tregs and CD226-TIGIT-FoxP3+Tregs while IL-12 was increased and negatively correlated with CD226-TIGIT+FoxP3+Tregs and CD226-TIGIT-FoxP3+Tregs in active UC. In follow-up patients, the levels of FoxP3+Tregs, CD226-TIGIT+FoxP3+Tregs and CD226-TIGIT-FoxP3+Tregs and serum IL-10 levels were significantly recovered when achieving remission after treatment. CONCLUSIONS Lack of CD226 expression on FoxP3+Tregs regardless of TIGIT expression may play an important role in exhibiting their suppressive function and preventing from disease activity in UC.
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Affiliation(s)
- Yan Long
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Chengbin Wang
- Medical School of Chinese PLA & Department of Clinical Laboratory Medicine, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Changsheng Xia
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Xiaoxu Li
- Department of Gastroenterology, Peking University People's Hospital, Beijing, China
| | - Chunhong Fan
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Xiaotao Zhao
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China
| | - Chen Liu
- Department of Clinical Laboratory, Peking University People's Hospital, Beijing, China.
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LAP + Cells Modulate Protection Induced by Oral Vaccination with Rhesus Rotavirus in a Neonatal Mouse Model. J Virol 2019; 93:JVI.00882-19. [PMID: 31292251 DOI: 10.1128/jvi.00882-19] [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: 06/06/2019] [Accepted: 07/09/2019] [Indexed: 11/20/2022] Open
Abstract
Transforming growth factor β (TGF-β) has been shown to play a role in immunity against different pathogens in vitro and against parasites in vivo However, its role in viral infections in vivo is incompletely understood. Using a neonatal mouse model of heterologous rhesus rotavirus (RV) vaccination, we show that the vaccine induced rotavirus-specific CD4 T cells, the majority of which lacked expression of KLRG1 or CD127, and a few regulatory rotavirus-specific CD4 T cells that expressed surface latency-associated peptide (LAP)-TGF-β. In these mice, inhibiting TGF-β, with both a neutralizing antibody and an inhibitor of TGF-β receptor signaling (activin receptor-like kinase 5 inhibitor [ALK5i]), did not change the development or intensity of the mild diarrhea induced by the vaccine, the rotavirus-specific T cell response, or protection against a subsequent challenge with a murine EC-rotavirus. However, mice treated with anti-LAP antibodies had improved protection after a homologous EC-rotavirus challenge, compared with control rhesus rotavirus-immunized mice. Thus, oral vaccination with a heterologous rotavirus stimulates regulatory RV-specific CD4 LAP-positive (LAP+) T cells, and depletion of LAP+ cells increases vaccine-induced protection.IMPORTANCE Despite the introduction of several live attenuated animal and human rotaviruses as efficient oral vaccines, rotaviruses continue to be the leading etiological agent for diarrhea mortality among children under 5 years of age worldwide. Improvement of these vaccines has been partially delayed because immunity to rotaviruses is incompletely understood. In the intestine (where rotavirus replicates), regulatory T cells that express latency-associated peptide (LAP) play a prominent role, which has been explored for many diseases but not specifically for infectious agents. In this paper, we show that neonatal mice given a live oral rotavirus vaccine develop rotavirus-specific LAP+ T cells and that depletion of these cells improves the efficiency of the vaccine. These findings may prove useful for the design of strategies to improve rotavirus vaccines.
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