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Ma Y, Yang Y, Dai H, Yan C, Yu S, Zhang S, Lin Z, Chen J, Yu G, Zhang J, Yin P, Lu J, Shi C, Ye Z, Ruan Q, Qi Z, Zhuang G. TIPE2 deficiency prolongs mouse heart allograft survival by inhibiting immature DCs-induced Treg generation. Clin Immunol 2023; 252:109636. [PMID: 37150242 DOI: 10.1016/j.clim.2023.109636] [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: 12/02/2022] [Revised: 03/06/2023] [Accepted: 04/24/2023] [Indexed: 05/09/2023]
Abstract
It has been reported that deletion of tumor necrosis factor-α-induced protein-8 like 2 (TNFAIP8L2, TIPE2) facilitates the activation of T-cell receptors. However, the role of TIPE2 in T-cell-mediated acute transplant rejection remains unclear. To illustrate the underlying cellular mechanisms, we transplanted BALB/c hearts into C57BL/6 wild-type C57BL/6 mice or mice deficient for TIPE2 (TIPE2-/-) and found that TIPE2-/- recipient mice showed significantly prolonged survival of heart allografts and suppressed maturation of CD11c+ dendritic cells (DCs), which largely abolished the activation and proliferation of alloreactive T cells and their cytotoxic activity. TIPE2-/- DCs increased CD4+Foxp3+CD127- Treg generation, likely by inhibiting DCs maturation and CD80 and CD86 expression. Administration of anti-CD25 abolished the allograft survival induced by TIPE2 deficiency. Moreover, TIPE2 deficiency increased IL-10 production in T cells and in recipient serum and allografts. Mechanistic studies revealed that TIPE2-/- restrained the maturation of DCs via inhibition of PI3K/AKT phosphorylation during alloantigen stimulation. Taken together, TIPE2 deficiency in recipient mice inhibited acute rejection by increasing Tregs generated by immature DCs. Thus, TIPE2 could be a therapeutic target for suppressing rejection in organ transplantation.
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Affiliation(s)
- Yunhan Ma
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China; School of Medicine, Jiangsu University, Zhenjiang 212000, China
| | - Yan Yang
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Helong Dai
- Department of Kidney Transplantation, Center of Organ Transplantation, The Second Xiangya Hospital of Central South University, Changsha 410000, China
| | - Changxiu Yan
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Shengnan Yu
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Shuaishuai Zhang
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Zeyang Lin
- Department of Pathology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen 361001, China
| | - Jinfeng Chen
- Biomedical Research Center of South China, College of Life Sciences, Fujian Normal University, Fuzhou 350117, China
| | - Gaoyi Yu
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Jing Zhang
- Department of medical clinical laboratory, Women and Children's Hospital, School of Medicine, Xiamen University, Xiamen 361001, China
| | - Ping Yin
- Department of Pathology, Zhongshan Hospital Affiliated to Xiamen University, Xiamen 361001, China
| | - Jianhong Lu
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China
| | - Chunyan Shi
- The Department of Oncology, Jiujiang No.1 People's Hospital, Jiujiang 332000, China
| | - Zhijian Ye
- Department of Gastrointestinal Surgery, Zhongshan Hospital of Xiamen University, Xiamen 361000, China
| | - Qingguo Ruan
- Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao 266071, China..
| | - Zhongquan Qi
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China; Wuzhou Workers' Hospital, Wuzhou 543000, China.
| | - Guohong Zhuang
- Xiamen Key Laboratory of Regeneration Medicine, Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, Organ Transplantation Institute, School of Medicine, Xiamen University, Xiamen 361102, China.
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Hey-Cunningham AJ, Riaz A, Fromm PD, Kupresanin F, Markham R, McGuire HM. Circulating and Endometrial Regulatory T Cell and Related Populations in Endometriosis and Infertility: Endometriosis Is Associated with Blunting of Endometrial Cyclical Effects and Reduced Proportions in Moderate-Severe Disease. Reprod Sci 2021; 29:229-242. [PMID: 34160778 DOI: 10.1007/s43032-021-00658-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/09/2021] [Indexed: 12/30/2022]
Abstract
Evidence to date supports regulatory T cell (Treg) alterations in endometriosis; however, the relationship remains unclear, and Tregs have not previously been investigated with respect to infertility in endometriosis. This prospective cross-sectional cohort study details circulating and endometrial tissue-specific disturbances in Tregs and broader gated populations in women of reproductive age with and without endometriosis (n = 57 and 29, respectively) using flow cytometry and immunohistochemistry. Participants were characterised by menstrual cycle phase, r-ASRM endometriosis disease stage and fertility status.In the endometrium of women with endometriosis, endometrial Tregs and CD4+ lymphocyte proportions did not change between the proliferative and secretory phases, while in women without the disease, they significantly decreased (p = 0.045 and p = 0.039, respectively). In women with endometriosis, endometrial Tregs were lower than in women without endometriosis overall (p = 0.050 as a proportion of all CD45+ immune cells). We have shown for the first time that proportions of CD4+ lymphocytes (p = 0.021), overall lymphocytes (p = 0.034) and non-granulocytes (p = 0.027) were significantly decreased in the endometrium of women with moderate-severe (r-ASRM stages III and IV) compared to minimal-mild (r-ASRM stages I and II) endometriosis. During the secretory phase, circulating Treg proportions were significantly increased in infertile compared to fertile women (p = 0.049). This study confirms differences in endometrial Tregs in women with endometriosis, with blunting of normal menstrual cyclical variations, reduced proportions during the proliferative phase and disease stage-specific relationships.
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Affiliation(s)
- A J Hey-Cunningham
- The University of Sydney Obstetrics, Gynaecology and Neonatology, Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia
| | - A Riaz
- The University of Sydney Obstetrics, Gynaecology and Neonatology, Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia
| | - P D Fromm
- Dendritic Cell Research Group, ANZAC Research Institute, The University of Sydney, Sydney, NSW, 2139, Australia
| | - F Kupresanin
- Dendritic Cell Research Group, ANZAC Research Institute, The University of Sydney, Sydney, NSW, 2139, Australia
| | - R Markham
- The University of Sydney Obstetrics, Gynaecology and Neonatology, Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2006, Australia
| | - H M McGuire
- Ramaciotti Facility for Human Systems Biology and Discipline of Pathology, Charles Perkins Centre, The University of Sydney, Sydney, NSW, 2006, Australia.
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Hayes ET, Hagan CE, Khoryati L, Gavin MA, Campbell DJ. Regulatory T Cells Maintain Selective Access to IL-2 and Immune Homeostasis despite Substantially Reduced CD25 Function. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 205:2667-2678. [PMID: 33055282 PMCID: PMC7657993 DOI: 10.4049/jimmunol.1901520] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Accepted: 09/12/2020] [Indexed: 11/19/2022]
Abstract
IL-2 is a critical regulator of immune homeostasis through its impact on both regulatory T (Treg) and effector T cells. However, the precise role of IL-2 in the maintenance and function of Treg cells in the adult peripheral immune system remains unclear. In this study, we report that neutralization of IL-2 in mice abrogated all IL-2R signaling in Treg cells, but was well tolerated and only gradually impacted Treg cell function and immune homeostasis. By contrast, despite substantially reduced IL-2 sensitivity, Treg cells maintained selective IL-2 signaling and prevented immune dysregulation following treatment with the inhibitory anti-CD25 Ab PC61. Reduction of Treg cells with a depleting version of the same CD25 Ab permitted CD8+ effector T cell proliferation before progressing to more widespread immune dysregulation. Thus, despite severely curtailed CD25 expression and function, Treg cells retain selective access to IL-2 that supports their anti-inflammatory functions in vivo. Ab-mediated targeting of CD25 is being actively pursued for treatment of autoimmune disease and prevention of allograft rejection, and our findings help inform therapeutic manipulation and design for optimal patient outcomes.
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Affiliation(s)
- Erika T Hayes
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101; and
- Department of Immunology, University of Washington School of Medicine, Seattle, WA 98195
| | - Cassidy E Hagan
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101; and
- Department of Immunology, University of Washington School of Medicine, Seattle, WA 98195
| | - Liliane Khoryati
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101; and
| | - Marc A Gavin
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101; and
| | - Daniel J Campbell
- Immunology Program, Benaroya Research Institute, Seattle, WA 98101; and
- Department of Immunology, University of Washington School of Medicine, Seattle, WA 98195
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Ji D, Song C, Li Y, Xia J, Wu Y, Jia J, Cui X, Yu S, Gu J. Combination of radiotherapy and suppression of Tregs enhances abscopal antitumor effect and inhibits metastasis in rectal cancer. J Immunother Cancer 2020; 8:jitc-2020-000826. [PMID: 33106387 PMCID: PMC7592256 DOI: 10.1136/jitc-2020-000826] [Citation(s) in RCA: 71] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/27/2020] [Indexed: 12/18/2022] Open
Abstract
Background Distant metastasis is the major cause of mortality in patients with locally advanced rectal cancer (LARC) following neoadjuvant chemoradiotherapy. Local radiotherapy can trigger an abscopal response to metastatic tumor cells. However, the abscopal effect is a rare event. CD4+ regulatory T (Treg) cell is a highly immune-suppressive subset which impedes immune surveillance against cancer, prevents the development of effective antitumor immunity and promotes tumor progression. We assume that the exploitation of the proimmunogenic effects of radiotherapy with anti-CD25 or anti-Cytotoxic T-Lymphocyte Associated Protein 4 (anti-CTLA4) monoclonal antibodies (mAbs) may enhance the local and abscopal effects in rectal cancer and improve the therapeutic outcome. Methods mRNA expression profiling of 81 pretreatment biopsy samples from LARC patients who received neoadjuvant radiotherapy (nRT) was performed to analyze the correlation between gene expression and prognosis. A retrospective analysis of patients with rectal cancer with distant metastasis or synchronous extracolonic cancers was performed to evaluate the abscopal effect of radiotherapy on rectal cancer. Two different dual-tumor mouse models were established to investigate the efficacy of single dose and dose-fractionated radiotherapy combined with anti-CD25 or anti-CTLA4 and anti-Programmed cell death 1 ligand 1 (anti-PD1) mAbs on the local tumor growth and liver metastasis. The univariate Cox regression analysis, one-way analysis of variance, Dunnett’s test, a mixed-effect linear model and Kaplan-Meier survival analysis were used to calculate p values. Results The proportion of Tregs in pre-nRT biopsies was negatively correlated with prognosis (p=0.007). The retrospective analysis showed that regressing liver metastases were infiltrated by CD8+ T cells. In contrast, stable/progressing metastases and synchronous extracolonic cancers were characterized by PD1+ T cells and Tregs infiltration. Animal experiment results demonstrated that the combination of radiotherapy and anti-CD25/CTLA4 mAb resulted in a significant increase in CD8+ T cells and CD8+/CD4+ ratio in primary and secondary tumors compared with the irradiation alone group (all p<0.05 or p<0.01). The combined treatment was able to decrease Tregs, PD1+CD8+ and PD1+CD4+ T cells (p<0.05), suppress locally irradiated and distal unirradiated tumor growth, and improve overall survival rate. Radiotherapy in conjunction with anti-CTLA4 reduced liver metastasis (p<0.05). Conclusions These data indicated that radiotherapy plus depletion of Tregs was able to improve the antitumor response and generate an abscopal effect.
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Affiliation(s)
- Dengbo Ji
- Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing, China
| | - Can Song
- School of Life Sciences, Tsinghua University, Beijing, China.,Peking-Tsinghua Center for Life Science, Peking University, Bejing, China
| | - Yongheng Li
- Department of Radiation Oncology, Key laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing, China
| | - Jinhong Xia
- Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing, China
| | - Yanjing Wu
- Department of Obstetrics and Gynecology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China
| | - Jinying Jia
- Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing, China
| | - Xinxin Cui
- Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing, China
| | - Songmao Yu
- Department of Radiation Oncology, Key laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital & Institute, Beijing, China
| | - Jin Gu
- Key Laboratory of Carcinogenesis and Translational Research, Department of Gastrointestinal Surgery III, Peking University Cancer Hospital & Institute, Beijing, China .,Peking-Tsinghua Center for Life Science, Peking University, Bejing, China.,Department of Gastrointestinal Surgery, Peking University S.G. Hospital, Beijing, China
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Dhainaut M, Moser M. Mechanisms of Surveillance of Dendritic Cells by Regulatory T Lymphocytes. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2015; 136:131-54. [DOI: 10.1016/bs.pmbts.2015.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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