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Zhu F, Xu Y, Fan X, Zhang F, Wang D, Qiao J, Zhu S, Zhao K, Pan B, Chen C, Zeng L, Li Z, Xu K. Role of T cell immune response cDNA 7 on the pathology of acute graft-versus-host disease. Oncol Lett 2020; 20:300. [PMID: 33101494 PMCID: PMC7577082 DOI: 10.3892/ol.2020.12163] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 08/18/2020] [Indexed: 11/06/2022] Open
Abstract
Activation of T lymphocytes is the initiating factor of the occurrence of acute graft-versus-host disease (aGVHD), and cytotoxic T lymphocyte antigen-4 (CTLA-4) is the inhibitory receptor for activating T cells. T cell immune response cDNA 7 (TIRC7) is considered an upstream regulator of CTLA-4; however, little is understood regarding the effects of TIRC7 on the regulation of CTLA-4 in aGVHD. The purpose of the present study was to evaluate the regulatory effects of TIRC7 on aGVHD, mainly in the pathology. Recipient mice were exposed to a preconditioning dose of 7.5 Gy irradiation on the day of the transplantation and were divided into the following groups: Blank control group, bone marrow transplantation control group, total body irradiation group, mild-moderate aGVHD group and severe aGVHD group. According to the different administration of CTLA-4 and TIRC7 monoclonal antibodies, the mild-moderate and severe aGVHD groups were randomly divided into the hematopoietic stem cell transplantation (HSCT) and HSCT + CTLA-4/TIRC7 groups. Recipient mice were sacrificed at different time points post-HSCT for histopathological analysis by hematoxylin and eosin staining. Compared with the control and other experimental groups, the mice in the combined CTLA-4 and TIRC7 group exhibited ameliorated pathological injury, and lower pathology scores of the liver, lung and intestine. These data revealed that intraperitoneal injection of anti-TIRC7 and/or anti-CTLA-4 monoclonal antibody into mice could effectively alleviate the severity of aGVHD.
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Affiliation(s)
- Feng Zhu
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Yanqiu Xu
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Xiaohui Fan
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Fan Zhang
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Dong Wang
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Jianlin Qiao
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Shengyun Zhu
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Kai Zhao
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Bin Pan
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Chong Chen
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Lingyu Zeng
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Zhenyu Li
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Kailin Xu
- Blood Disease Institute, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China.,Key Laboratory of Bone Marrow Stem Cell, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
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Zhu F, Qiu T, Zhu S, Zhao K, Chen C, Qiao J, Pan B, Yan Z, Chen W, Liu Q, Wu Q, Cao J, Sang W, Zeng L, Sun H, Li Z, Xu K. TIRC7 inhibits Th1 cells by upregulating the expression of CTLA‑4 and STAT3 in mice with acute graft‑versus‑host disease. Oncol Rep 2020; 44:43-54. [PMID: 32319655 PMCID: PMC7254953 DOI: 10.3892/or.2020.7588] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 03/18/2020] [Indexed: 11/05/2022] Open
Abstract
In a previous study, it was demonstrated that T‑cell immune response cDNA 7 (TIRC7) levels reflect the efficacy of treatment of patients with acute graft‑versus‑host disease (GVHD). However, the pathogenesis of TIRC7 in acute GVHD remains poorly understood. Lymphocytes from patients with acute GVHD were selected as targeT cells, and the effects of TIRC7 on cytotoxic T lymphocyte antigen‑4 (CTLA‑4), T cell activation and cytokine secretion were observed by electroporation. A mouse model of acute GVHD was established; anti‑TIRC7 and anti‑CTLA‑4 monoclonal antibodies were intraperitoneally injected into recipient mice. Then, the effects of TIRC7 and CTLA‑4 on T cell activation and acute GVHD were monitored. After TIRC7 expression was downregulated, CTLA‑4 levels were decreased and STAT3 phosphorylation was reduced; conversely, the activation capacity of T lymphocytes was elevated, and the secretion of interferon‑γ and other cytokines was increased. The mice in the TIRC7 + CTLA‑4 co‑administration group exhibited the lowest acute GVHD scores, with the longest average survival time and shortest recovery time of hematopoietic reconstitution. In conclusion, the results indicated that TIRC7 may positively regulate the function of CTLA‑4 and inhibit T cell activation, thus suppressing the development and progression of acute GVHD.
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Affiliation(s)
- Feng Zhu
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Tingting Qiu
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Shengyun Zhu
- Laboratory of Transplant Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Kai Zhao
- Laboratory of Transplant Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Chong Chen
- Laboratory of Transplant Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Jianlin Qiao
- Laboratory of Transplant Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Bin Pan
- Laboratory of Transplant Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Zhiling Yan
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Wei Chen
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Qiong Liu
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Qingyun Wu
- Laboratory of Transplant Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Jiang Cao
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Wei Sang
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Lingyu Zeng
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Haiying Sun
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Zhenyu Li
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
| | - Kailin Xu
- Department of Hematology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu 221002, P.R. China
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Wang Y, Niu ZY, Guo YJ, Wang LH, Lin FR, Zhang JY. IL-11 promotes the treatment efficacy of hematopoietic stem cell transplant therapy in aplastic anemia model mice through a NF-κB/microRNA-204/thrombopoietin regulatory axis. Exp Mol Med 2017; 49:e410. [PMID: 29217821 PMCID: PMC5750475 DOI: 10.1038/emm.2017.217] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 04/30/2017] [Accepted: 06/07/2017] [Indexed: 12/26/2022] Open
Abstract
Hematopoietic stem cell (HSC) transplantation could be of therapeutic value for aplastic anemia (AA) patients, and immunosuppressants may facilitate the efficiency of the procedure. As anti-inflammatory cytokine interleukin-11 (IL-11) has a thrombopoietic effect, its use in cases of chronic bone marrow failure, such as AA, has been proposed to induce HSC function. However, the putative mechanisms that may support this process remain poorly defined. We found that decreased miR-204-5p levels were coincident with increased proliferation in mouse HSCs following exposure to IL-11 in vitro. Through inhibiting NF-кB activity, miR-204-5p repression was demonstrated to be a downstream effect of IL-11 signaling. miR-204-5p was shown to directly target thrombopoietin (TPO) via sequence-dependent 3′-UTR repression, indicating that this microRNA-dependent pathway could serve an essential role in supporting IL-11 functions in HSCs. Increased TPO expression in HSCs following IL-11 exposure could be mimicked or blocked by inhibiting or overexpressing miR-204-5p, respectively. Consistent with these in vitro findings, IL-11 promoted HSC engraftment in a mouse model of AA, an effect that was attenuated in cells overexpressing miR-204-5p. The reduction in miR-204-5p levels is an integral component of IL-11 signaling that may play an essential role in treating AA.
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Affiliation(s)
- Yan Wang
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Zhi-Yun Niu
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Yu-Jie Guo
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Li-Hua Wang
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Feng-Ru Lin
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
| | - Jing-Yu Zhang
- Department of Hematology, The Second Hospital of Hebei Medical University, Hebei Key Laboratory of Hematology, Shijiazhuang, China
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Somatic HLA Mutations Expose the Role of Class I-Mediated Autoimmunity in Aplastic Anemia and its Clonal Complications. Blood Adv 2017; 1:1900-1910. [PMID: 28971166 DOI: 10.1182/bloodadvances.2017010918] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Acquired aplastic anemia (aAA) is an acquired deficiency of early hematopoietic cells, characterized by inadequate blood production, and a predisposition to myelodysplastic syndrome (MDS) and leukemia. Although its exact pathogenesis is unknown, aAA is thought to be driven by Human Leukocyte Antigen (HLA)-restricted T cell immunity, with earlier studies favoring HLA class II-mediated pathways. Using whole exome sequencing (WES), we recently identified two aAA patients with somatic mutations in HLA class I genes. We hypothesized that HLA class I mutations are pathognomonic for autoimmunity in aAA, but were previously underappreciated because the Major Histocompatibility Complex (MHC) region is notoriously difficult to analyze by WES. Using a combination of targeted deep sequencing of HLA class I genes and single nucleotide polymorphism array (SNP-A) genotyping we screened 66 aAA patients for somatic HLA class I loss. We found somatic HLA loss in eleven patients (17%), with thirteen loss-of-function mutations in HLA-A*33:03, HLA-A*68:01, HLA-B*14:02 and HLA-B*40:02 alleles. Three patients had more than one mutation targeting the same HLA allele. Interestingly, HLA-B*14:02 and HLA-B*40:02 were significantly overrepresented in aAA patients, compared to ethnicity-matched controls. Patients who inherited the targeted HLA alleles, regardless of HLA mutation status, had a more severe disease course with more frequent clonal complications as assessed by WES, SNP-A, and metaphase cytogenetics, and more frequent secondary MDS. The finding of recurrent HLA class I mutations provides compelling evidence for a predominant HLA class I-driven autoimmunity in aAA, and establishes a novel link between aAA patients' immunogenetics and clonal evolution.
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Abstract
Severe aplastic anemia (SAA) is an autoimmune disease caused mainly by activated T lymphocytes. Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a member of TNF family, which can induce apoptosis and play a significant role in the pathogenesis of many autoimmune disorders. In this study, we sought to investigate the role of TRAIL in peripheral CD8+ T cells (CTLs) from SAA patients to clarify the autoimmune mechanisms of bone marrow failure in SAA. The expression of TRAIL and TRAIL-R2 in CTLs from SAA patients and normal controls were determined by flow cytometry, real-time PCR, and western blot. Expression of perforin and granzyme B and apoptosis in CTLs were evaluated by flow cytometry. The expression of TRAIL and TRAIL-R2 in SAA patients was significantly decreased compared with controls; however, there was no statistical difference in TRAIL mRNA expression between the two groups. TRAIL expression in CTLs was negatively correlated with the expression of perforin and granzyme B, and negatively correlated with CTLs apoptosis in SAA patients. The TRAIL pathway may be responsible for abnormal CTL activation in SAA patients. Further study of TRAIL and its receptors may elucidate the pathogenesis of SAA.
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