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Zhang W, Chen L, Lu X, Dong X, Feng M, Tu Y, Wang Z. EFHD2 regulates T cell receptor signaling and modulates T helper cell activation in early sepsis. Int Immunopharmacol 2024; 133:112087. [PMID: 38669951 DOI: 10.1016/j.intimp.2024.112087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 04/10/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024]
Abstract
EFHD2 (EF-hand domain family, member D2) has been identified as a calcium-binding protein with immunomodulatory effects. In this study, we characterized the phenotype of Efhd2-deficient mice in sepsis and examined the biological functions of EFHD2 in peripheral T cell activation and T helper (Th) cell differentiation. Increased levels of EFHD2 expression accompanied peripheral CD4+ T cell activation in the early stages of sepsis. Transcriptomic analysis indicated that immune response activation was impaired in Efhd2-deficient CD4+ T cells. Further, Efhd2-deficient CD4+ T cells isolated from the spleen of septic mice showed impaired T cell receptor (TCR)-induced Th differentiation, especially Th1 and Th17 differentiation. In vitro data also showed that Efhd2-deficient CD4+ T cells exhibit impaired Th1 and Th17 differentiation. In the CD4+ T cells and macrophages co-culture model for antigen presentation, the deficiency of Efhd2 in CD4+ T cells resulted in impaired formation of immunological synapses. In addition, Efhd2-deficient CD4+ T cells exhibited reduced levels of phospho-LCK and phospho-ZAP70, and downstream transcription factors including Nfat, Nfκb and Nur77 following TCR engagement. In summary, EFHD2 may promote TCR-mediated T cell activation subsequent Th1 and Th17 differentiation in the early stages of sepsis by regulating the intensity of TCR complex formation.
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Affiliation(s)
- Wenzhao Zhang
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai 200433, China
| | - Linlin Chen
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai 200433, China
| | - Xin Lu
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai 200433, China
| | - Xiaohui Dong
- Department of Pharmacy, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Meixia Feng
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai 200433, China
| | - Ye Tu
- Department of Pharmacy, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200092, China.
| | - Zhibin Wang
- Department of Critical Care Medicine, School of Anesthesiology, Naval Medical University, Shanghai 200433, China.
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2
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Liu M, Xia N, Zha L, Yang H, Gu M, Hao Z, Zhu X, Li N, He J, Tang T, Nie S, Zhang M, Lv B, Lu Y, Jiao J, Li J, Cheng X. Increased expression of protein tyrosine phosphatase nonreceptor type 22 alters early T-cell receptor signaling and differentiation of CD4 + T cells in chronic heart failure. FASEB J 2024; 38:e23386. [PMID: 38112398 DOI: 10.1096/fj.202300663r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 10/31/2023] [Accepted: 12/11/2023] [Indexed: 12/21/2023]
Abstract
CD4+ T-cell counts are increased and activated in patients with chronic heart failure (CHF), whereas regulatory T-cell (Treg) expansion is inhibited, probably due to aberrant T-cell receptor (TCR) signaling. TCR signaling is affected by protein tyrosine phosphatase nonreceptor type 22 (PTPN22) in autoimmune disorders, but whether PTPN22 influences TCR signaling in CHF remains unclear. This observational case-control study included 45 patients with CHF [18 patients with ischemic heart failure versus 27 patients with nonischemic heart failure (NIHF)] and 16 non-CHF controls. We used flow cytometry to detect PTPN22 expression, tyrosine phosphorylation levels, zeta-chain-associated protein kinase, 70 kDa (ZAP-70) inhibitory residue tyrosine 292 and 319 phosphorylation levels, and CD4+ T cell and Treg proportions. We conducted lentivirus-mediated PTPN22 RNA silencing in isolated CD4+ T cells. PTPN22 expression increased in the CD4+ T cells of patients with CHF compared with that in controls. PTPN22 expression was positively correlated with left ventricular end-diastolic diameter and type B natriuretic peptide but negatively correlated with left ventricular ejection fraction in the NIHF group. ZAP-70 tyrosine 292 phosphorylation was decreased, which correlated positively with PTPN22 overexpression in patients with NIHF and promoted early TCR signaling. PTPN22 silencing induced Treg differentiation in CD4+ T cells from patients with CHF, which might account for the reduced frequency of peripheral Tregs in these patients. PTPN22 is a potent immunomodulator in CHF and might play an essential role in the development of CHF by promoting early TCR signaling and impairing Treg differentiation from CD4+ T cells.
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Affiliation(s)
- Meilin Liu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ni Xia
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lingfeng Zha
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haoyi Yang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Muyang Gu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhiheng Hao
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xinyu Zhu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Nana Li
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junyi He
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tingting Tang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shaofang Nie
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Zhang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Bingjie Lv
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yuzhi Lu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiao Jiao
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingyong Li
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiang Cheng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Key Laboratory of Biological Targeted Therapy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Hubei Provincial Engineering Research Center of Immunological Diagnosis and Therapy for Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Okamoto M, Yamamoto M. TCR Signals Controlling Adaptive Immunity against Toxoplasma and Cancer. Adv Exp Med Biol 2024; 1444:177-193. [PMID: 38467980 DOI: 10.1007/978-981-99-9781-7_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
T cells play a crucial role in adaptive immunity by recognizing and eliminating foreign pathogens and abnormal cells such as cancer cells. T cell receptor (TCR), which is expressed on the surface of T cells, recognizes and binds to specific antigens presented by major histocompatibility complex (MHC) molecules on antigen-presenting cells (APCs). This activation process leads to the proliferation and differentiation of T cells, allowing them to carry out their specific immune response functions. This chapter outlines the TCR signaling pathways that are common to different T cell subsets, as well as the recently elucidated TCR signaling pathway specific to CD8+ T cells and its role in controlling anti-Toxoplasma and anti-tumor immunity.
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Affiliation(s)
- Masaaki Okamoto
- Department of Immunoparasitology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan
- Laboratory of Immunoparasitology, WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Masahiro Yamamoto
- Department of Immunoparasitology, Research Institute for Microbial Diseases, Osaka University, Osaka, Japan.
- Laboratory of Immunoparasitology, WPI Immunology Frontier Research Center, Osaka University, Osaka, Japan.
- Department of Immunoparasitology, Center for Infectious Disease Education and Research, Osaka University, Osaka, Japan.
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Keller B, Kfir-Erenfeld S, Matusewicz P, Hartl F, Lev A, Lee YN, Simon AJ, Stauber T, Elpeleg O, Somech R, Stepensky P, Minguet S, Schraven B, Warnatz K. Combined Immunodeficiency Caused by a Novel Nonsense Mutation in LCK. J Clin Immunol 2023; 44:4. [PMID: 38112969 PMCID: PMC10730691 DOI: 10.1007/s10875-023-01614-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 10/14/2023] [Indexed: 12/21/2023]
Abstract
Mutations affecting T-cell receptor (TCR) signaling typically cause combined immunodeficiency (CID) due to varying degrees of disturbed T-cell homeostasis and differentiation. Here, we describe two cousins with CID due to a novel nonsense mutation in LCK and investigate the effect of this novel nonsense mutation on TCR signaling, T-cell function, and differentiation. Patients underwent clinical, genetic, and immunological investigations. The effect was addressed in primary cells and LCK-deficient T-cell lines after expression of mutated LCK. RESULTS: Both patients primarily presented with infections in early infancy. The LCK mutation led to reduced expression of a truncated LCK protein lacking a substantial part of the kinase domain and two critical regulatory tyrosine residues. T cells were oligoclonal, and especially naïve CD4 and CD8 T-cell counts were reduced, but regulatory and memory including circulating follicular helper T cells were less severely affected. A diagnostic hallmark of this immunodeficiency is the reduced surface expression of CD4. Despite severely impaired TCR signaling mTOR activation was partially preserved in patients' T cells. LCK-deficient T-cell lines reconstituted with mutant LCK corroborated partially preserved signaling. Despite detectable differentiation of memory and effector T cells, their function was severely disturbed. NK cell cytotoxicity was unaffected. Residual TCR signaling in LCK deficiency allows for reduced, but detectable T-cell differentiation, while T-cell function is severely disturbed. Our findings expand the previous report on one single patient on the central role of LCK in human T-cell development and function.
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Affiliation(s)
- Baerbel Keller
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Shlomit Kfir-Erenfeld
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Paul Matusewicz
- Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Signalling Research Centres BIOSS and CIBSS, Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Frederike Hartl
- Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Signalling Research Centres BIOSS and CIBSS, Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Atar Lev
- Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center; Edmond and Lily Safra Children's Hospital, Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Yu Nee Lee
- Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center; Edmond and Lily Safra Children's Hospital, Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Amos J Simon
- Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center; Edmond and Lily Safra Children's Hospital, Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Tali Stauber
- Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center; Edmond and Lily Safra Children's Hospital, Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Orly Elpeleg
- Department of Genetics, Hadassah, Hebrew University Medical Center, Jerusalem, Israel
| | - Raz Somech
- Pediatric Department A and the Immunology Service, Jeffrey Modell Foundation Center; Edmond and Lily Safra Children's Hospital, Sheba Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Polina Stepensky
- Department of Bone Marrow Transplantation and Cancer Immunotherapy, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Susana Minguet
- Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
- Signalling Research Centres BIOSS and CIBSS, Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Burkhart Schraven
- Health Campus Immunology, Infectiology and Inflammation (GC-I3) Medical Faculty, Otto-Von Guericke University Magdeburg, Magdeburg, Germany
- Center of Health and Medical Prevention (CHaMP), Otto-Von Guericke University Magdeburg, Magdeburg, Germany
| | - Klaus Warnatz
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
- Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
- Department of Immunology, University Hospital Zurich, Zurich, Switzerland.
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Lanz AL, Erdem S, Ozcan A, Ceylaner G, Cansever M, Ceylaner S, Conca R, Magg T, Acuto O, Latour S, Klein C, Patiroglu T, Unal E, Eken A, Hauck F. A Novel Biallelic LCK Variant Resulting in Profound T-Cell Immune Deficiency and Review of the Literature. J Clin Immunol 2023; 44:1. [PMID: 38100037 PMCID: PMC10724324 DOI: 10.1007/s10875-023-01602-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 10/06/2023] [Indexed: 12/18/2023]
Abstract
Lymphocyte-specific protein tyrosine kinase (LCK) is an SRC-family kinase critical for initiation and propagation of T-cell antigen receptor (TCR) signaling through phosphorylation of TCR-associated CD3 chains and recruited downstream molecules. Until now, only one case of profound T-cell immune deficiency with complete LCK deficiency [1] caused by a biallelic missense mutation (c.1022T>C, p.L341P) and three cases of incomplete LCK deficiency [2] caused by a biallelic splice site mutation (c.188-2A>G) have been described. Additionally, deregulated LCK expression has been associated with genetically undefined immune deficiencies and hematological malignancies. Here, we describe the second case of complete LCK deficiency in a 6-month-old girl born to consanguineous parents presenting with profound T-cell immune deficiency. Whole exome sequencing (WES) revealed a novel pathogenic biallelic missense mutation in LCK (c.1393T>C, p.C465R), which led to the absence of LCK protein expression and phosphorylation, and a consecutive decrease in proximal TCR signaling. Loss of conventional CD4+ and CD8+ αβT-cells and homeostatic T-cell expansion was accompanied by increased γδT-cell and Treg percentages. Surface CD4 and CD8 co-receptor expression was reduced in the patient T-cells, while the heterozygous mother had impaired CD4 and CD8 surface expression to a lesser extent. We conclude that complete LCK deficiency is characterized by profound T-cell immune deficiency, reduced CD4 and CD8 surface expression, and a characteristic TCR signaling disorder. CD4 and CD8 surface expression may be of value for early detection of mono- and/or biallelic LCK deficiency.
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Affiliation(s)
- Anna-Lisa Lanz
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Lindwurmstrasse 4, 80337, Munich, Germany
| | - Serife Erdem
- Department of Medical Biology, Faculty of Medicine, Erciyes University, 38030, Kayseri, Turkey
- Molecular Biology and Genetics Department, Gevher Nesibe Genome and Stem Cell Institute, Betul-Ziya Eren Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
| | - Alper Ozcan
- Molecular Biology and Genetics Department, Gevher Nesibe Genome and Stem Cell Institute, Betul-Ziya Eren Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
| | | | - Murat Cansever
- Division of Pediatric Hematology & Oncology, Department of Pediatrics, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | | | - Raffaele Conca
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Lindwurmstrasse 4, 80337, Munich, Germany
| | - Thomas Magg
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Lindwurmstrasse 4, 80337, Munich, Germany
| | - Oreste Acuto
- T Cell Signalling Laboratory, Sir William Dunn School of Pathology, Oxford University, Oxford, OX2 3RE, UK
| | - Sylvain Latour
- Laboratory of Lymphocyte Activation and Susceptibility to EBV Infection, INSERM UMR1163, Paris, France
| | - Christoph Klein
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Lindwurmstrasse 4, 80337, Munich, Germany
| | - Turkan Patiroglu
- Division of Pediatric Hematology & Oncology, Department of Pediatrics, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Ekrem Unal
- Molecular Biology and Genetics Department, Gevher Nesibe Genome and Stem Cell Institute, Betul-Ziya Eren Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
- Intergen, Ankara, Turkey
- Hasan Kalyoncu University, Faculty of Health Sciences, Medical Point Hospital, Gaziantep, Türkiye
| | - Ahmet Eken
- Department of Medical Biology, Faculty of Medicine, Erciyes University, 38030, Kayseri, Turkey.
- Molecular Biology and Genetics Department, Gevher Nesibe Genome and Stem Cell Institute, Betul-Ziya Eren Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey.
| | - Fabian Hauck
- Division of Pediatric Immunology and Rheumatology, Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Lindwurmstrasse 4, 80337, Munich, Germany.
- Munich Centre for Rare Diseases (M-ZSELMU), University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany.
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6
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Tsai YL, Arias-Badia M, Kadlecek TA, Lwin YM, Srinath A, Shah NH, Wang ZE, Barber D, Kuriyan J, Fong L, Weiss A. TCR signaling promotes formation of an STS1-Cbl-b complex with pH-sensitive phosphatase activity that suppresses T cell function in acidic environments. Immunity 2023; 56:2682-2698.e9. [PMID: 38091950 PMCID: PMC10785950 DOI: 10.1016/j.immuni.2023.11.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 08/11/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023]
Abstract
T cell responses are inhibited by acidic environments. T cell receptor (TCR)-induced protein phosphorylation is negatively regulated by dephosphorylation and/or ubiquitination, but the mechanisms underlying sensitivity to acidic environments are not fully understood. Here, we found that TCR stimulation induced a molecular complex of Cbl-b, an E3-ubiquitin ligase, with STS1, a pH-sensitive unconventional phosphatase. The induced interaction depended upon a proline motif in Cbl-b interacting with the STS1 SH3 domain. STS1 dephosphorylated Cbl-b interacting phosphoproteins. The deficiency of STS1 or Cbl-b diminished the sensitivity of T cell responses to the inhibitory effects of acid in an autocrine or paracrine manner in vitro or in vivo. Moreover, the deficiency of STS1 or Cbl-b promoted T cell proliferative and differentiation activities in vivo and inhibited tumor growth, prolonged survival, and improved T cell fitness in tumor models. Thus, a TCR-induced STS1-Cbl-b complex senses intra- or extra-cellular acidity and regulates T cell responses, presenting a potential therapeutic target for improving anti-tumor immunity.
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Affiliation(s)
- Yuan-Li Tsai
- Rosalind Russell and Ephraim P. Engleman Rheumatology Research Center, Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Marcel Arias-Badia
- Division of Hematology and Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Theresa A Kadlecek
- Rosalind Russell and Ephraim P. Engleman Rheumatology Research Center, Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Yee May Lwin
- Division of Hematology and Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Aahir Srinath
- Division of Hematology and Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Neel H Shah
- Department of Chemistry, Columbia University, New York, NY 10027, USA
| | - Zhi-En Wang
- Howard Hughes Medical Institute, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Diane Barber
- Department of Cell and Tissue Biology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - John Kuriyan
- Department of Biochemistry, Vanderbilt University, Nashville, TN 37232, USA
| | - Lawrence Fong
- Division of Hematology and Oncology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA; Helen Diller Family Comprehensive Cancer Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Arthur Weiss
- Rosalind Russell and Ephraim P. Engleman Rheumatology Research Center, Division of Rheumatology, Department of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.
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7
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Yang ML, Lam TT, Kanyo J, Kang I, Zhou ZS, Clarke SG, Mamula MJ. Natural isoaspartyl protein modification of ZAP70 alters T cell responses in lupus. Autoimmunity 2023; 56:2282945. [PMID: 37994408 PMCID: PMC10897934 DOI: 10.1080/08916934.2023.2282945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 11/08/2023] [Indexed: 11/24/2023]
Abstract
Protein posttranslational modifications (PTMs) arise in a number of normal cellular biological pathways and in response to pathology caused by inflammation and/or infection. Indeed, a number of PTMs have been identified and linked to specific autoimmune responses and metabolic pathways. One particular PTM, termed isoaspartyl (isoAsp or isoD) modification, is among the most common spontaneous PTM occurring at physiological pH and temperature. Herein, we demonstrate that isoAsp modifications arise within the ZAP70 protein tyrosine kinase upon T-cell antigen receptor (TCR) engagement. The enzyme protein L-isoaspartate O-methyltransferase (PCMT1, or PIMT, EC 2.1.1.77) evolved to repair isoaspartyl modifications in cells. In this regard, we observe that increased levels of isoAsp modification that arise under oxidative stress are correlated with reduced PIMT activity in patients with systemic lupus erythematosus (SLE). PIMT deficiency leads to T cell hyper-proliferation and hyper-phosphorylation through ZAP70 signaling. We demonstrate that inducing the overexpression of PIMT can correct the hyper-responsive phenotype in lupus T cells. Our studies reveal a phenotypic role of isoAsp modification and phosphorylation of ZAP70 in lupus T cell autoimmunity and provide a potential therapeutic target through the repair of isoAsp modification.
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Affiliation(s)
- Mei-Ling Yang
- Section of Rheumatology, Allergy and Immunology, Department of Internal Medicine, Yale University, New Haven, CT, USA
| | - TuKiet T. Lam
- Keck MS & Proteomics Resource, WM Keck Foundation Biotechnology Resource Laboratory, New Haven, CT, USA
- Department of Biophysics and Biochemistry, Yale University, New Haven, CT, USA
| | - Jean Kanyo
- Keck MS & Proteomics Resource, WM Keck Foundation Biotechnology Resource Laboratory, New Haven, CT, USA
| | - Insoo Kang
- Section of Rheumatology, Allergy and Immunology, Department of Internal Medicine, Yale University, New Haven, CT, USA
| | - Zhaohui Sunny Zhou
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA, USA
| | - Steven G. Clarke
- Department of Chemistry and Biochemistry, Molecular Biology Institute, UCLA, Los Angeles, CA, USA
| | - Mark J. Mamula
- Section of Rheumatology, Allergy and Immunology, Department of Internal Medicine, Yale University, New Haven, CT, USA
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8
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Gebru YA, Pang MG. Modulatory effects of bisphenol A on the hepatic immune response. Environ Pollut 2023; 336:122430. [PMID: 37611793 DOI: 10.1016/j.envpol.2023.122430] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 08/16/2023] [Accepted: 08/19/2023] [Indexed: 08/25/2023]
Abstract
The liver is a primary line of defense for protection from external substances next to the intestinal barrier. As a result, the hepatic immune system plays a central role in liver pathophysiology. Bisphenol A (BPA) is one of the most common endocrine disrupting chemicals and is primarily metabolized in the liver. Due to its ability to bind to estrogen receptors, BPA is well known to possess estrogenic activity and disrupt reproductive functions. The phase I and Phase II metabolism reactions of BPA mainly occur in the liver with the help of enzymes including cytochrome P450 (CYP), uridine 5'-diphospho-glucuronosyltransferase-glucuronosyltransferases, sulfotransferases, and glutathione-S-transferases. Although the majority of BPA is excreted after conjugation by these enzymes, untransformed BPA induces the production of reactive oxygen species through disruption of the enzymatic complex CYP, lipid accumulation, mitochondrial dysfunction, endoplasmic reticulum stress and inflammatory injury in the liver. Moreover, it has been proposed to possess a potential immunomodulatory effect. Indeed, several in vivo and in vitro studies have reported that low doses of BPA increase the population of T cells with type 1 T helper (Th1), Th2, and Th17 cells. Although the current literature lacks clear evidence on the mechanisms by which BPA is involved in T cell mediated immune responses, recent multi-omics studies suggest that it may directly interact with the antigen processing and presentation pathways. In this review, we first discuss the metabolism of BPA in the liver, before exploring currently available data on its effects on liver injury. Finally, we review its modulatory effects on the hepatic immune response, as well as potential mechanisms. By conducting this review, we aim to improve understanding on the relationship between BPA exposure and immune-related liver injury, with a focus on the antigen processing and presentation pathway and T cell-mediated response in the liver.
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Affiliation(s)
- Yoseph Asmelash Gebru
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 17546, Republic of Korea.
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9
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Balasubramanian A, Sundrud MS. ATP-dependent transporters: emerging players at the crossroads of immunity and metabolism. Front Immunol 2023; 14:1286696. [PMID: 38022644 PMCID: PMC10644303 DOI: 10.3389/fimmu.2023.1286696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 10/11/2023] [Indexed: 12/01/2023] Open
Abstract
Nearly 50 ATP-binding cassette (ABC) transporters are encoded by mammalian genomes. These transporters are characterized by conserved nucleotide-binding and hydrolysis (i.e., ATPase) domains, and power directional transport of diverse substrate classes - ions, small molecule metabolites, xenobiotics, hydrophobic drugs, and even polypeptides - into or out of cells or subcellular organelles. Although immunological functions of ABC transporters are only beginning to be unraveled, emerging literature suggests these proteins have under-appreciated roles in the development and function of T lymphocytes, including many of the key effector, memory and regulatory subsets that arise during responses to infection, inflammation or cancers. One transporter in particular, MDR1 (Multidrug resistance-1; encoded by the ABCB1 locus in humans), has taken center stage as a novel player in immune regulation. Although MDR1 remains widely viewed as a simple drug efflux pump in tumor cells, recent evidence suggests that this transporter fills key endogenous roles in enforcing metabolic fitness of activated CD4 and CD8 T cells. Here, we summarize current understanding of the physiological functions of ABC transporters in immune regulation, with a focus on the anti-oxidant functions of MDR1 that may shape both the magnitude and repertoires of antigen-specific effector and memory T cell compartments. While much remains to be learned about the functions of ABC transporters in immunobiology, it is already clear that they represent fertile new ground, both for the definition of novel immunometabolic pathways, and for the discovery of new drug targets that could be leveraged to optimize immune responses to vaccines and cancer immunotherapies.
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Affiliation(s)
- Akshaya Balasubramanian
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - Mark S. Sundrud
- Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
- Department of Medicine, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
- Center for Digestive Health, Dartmouth Health, Lebanon, NH, United States
- Dartmouth Cancer Center, Lebanon, NH, United States
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10
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Shim JA, Lee SM, Jeong JW, Kim H, Son WJ, Park JH, Song P, Im SH, Bae S, Park JH, Jo Y, Hong C. NFAT1 and NFκB regulates expression of the common γ-chain cytokine receptor in activated T cells. Cell Commun Signal 2023; 21:309. [PMID: 37904191 PMCID: PMC10617197 DOI: 10.1186/s12964-023-01326-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Accepted: 09/18/2023] [Indexed: 11/01/2023] Open
Abstract
INTRODUCTION Cytokines of the common γ chain (γc) family are critical for the development, differentiation, and survival of T lineage cells. Cytokines play key roles in immunodeficiencies, autoimmune diseases, allergies, and cancer. Although γc is considered an assistant receptor to transmit cytokine signals and is an indispensable receptor in the immune system, its regulatory mechanism is not yet well understood. OBJECTIVE This study focused on the molecular mechanisms that γc expression in T cells is regulated under T cell receptor (TCR) stimulation. METHODS The γc expression in TCR-stimulated T cells was determined by flow cytometry, western blot and quantitative RT-PCR. The regulatory mechanism of γc expression in activated T cells was examined by promoter-luciferase assay and chromatin immunoprecipitation assays. NFAT1 and NFκB deficient cells generated using CRISPR-Cas9 and specific inhibitors were used to examine their role in regulation of γc expression. Specific binding motif was confirmed by γc promotor mutant cells generated using CRISPR-Cas9. IL-7TgγcTg mice were used to examine regulatory role of γc in cytokine signaling. RESULTS We found that activated T cells significantly upregulated γc expression, wherein NFAT1 and NFκB were key in transcriptional upregulation via T cell receptor stimulation. Also, we identified the functional binding site of the γc promoter and the synergistic effect of NFAT1 and NFκB in the regulation of γc expression. Increased γc expression inhibited IL-7 signaling and rescued lymphoproliferative disorder in an IL-7Tg animal model, providing novel insights into T cell homeostasis. CONCLUSION Our results indicate functional cooperation between NFAT1 and NFκB in upregulating γc expression in activated T cells. As γc expression also regulates γc cytokine responsiveness, our study suggests that γc expression should be considered as one of the regulators in γc cytokine signaling and the development of T cell immunotherapies. Video Abstract.
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Affiliation(s)
- Ju A Shim
- Department of Anatomy, Pusan National University School of Medicine, Room 504, 49 Busandaehak-Ro, Yangsan, Gyeongsangnam-Do, 50612, South Korea
- Department of Convergence Medical Science, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
| | - So Min Lee
- Department of Anatomy, Pusan National University School of Medicine, Room 504, 49 Busandaehak-Ro, Yangsan, Gyeongsangnam-Do, 50612, South Korea
- Department of Convergence Medical Science, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
- PNU GRAND Convergence Medical Science Education Research Center, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
| | - Jin Woo Jeong
- Department of Anatomy, Pusan National University School of Medicine, Room 504, 49 Busandaehak-Ro, Yangsan, Gyeongsangnam-Do, 50612, South Korea
- Department of Convergence Medical Science, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
- PNU GRAND Convergence Medical Science Education Research Center, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
| | - Hyori Kim
- Department of Anatomy, Pusan National University School of Medicine, Room 504, 49 Busandaehak-Ro, Yangsan, Gyeongsangnam-Do, 50612, South Korea
- Department of Convergence Medical Science, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
- PNU GRAND Convergence Medical Science Education Research Center, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
| | - Woo Jae Son
- Department of Chemistry, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jun Hong Park
- Herbal Medicine Resources Research Center, Korea Institute of Oriental Medicine, Naju, 58245, Republic of Korea
- University of Science & Technology (UST), KIOM Campus, Korean Convergence Medicine Major, Daejeon, 34054, Republic of Korea
| | - Parkyong Song
- Department of Convergence Medical Science, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
- PNU GRAND Convergence Medical Science Education Research Center, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea
| | - Sin-Hyeog Im
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Korea
| | - Sangsu Bae
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Jung-Hyun Park
- Experimental Immunology Branch, Center for Cancer Research, National Cancer Institute, NIH, Bethesda, MD, 20892, USA
| | - Yuna Jo
- Department of Convergence Medical Science, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea.
- Department of Anatomy, Pusan National University School of Medicine, Room 515, 49 Busandaehak-Ro, Yangsan, Gyeongsangnam-Do, 50612, South Korea.
| | - Changwan Hong
- Department of Anatomy, Pusan National University School of Medicine, Room 504, 49 Busandaehak-Ro, Yangsan, Gyeongsangnam-Do, 50612, South Korea.
- Department of Convergence Medical Science, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea.
- PNU GRAND Convergence Medical Science Education Research Center, Pusan National University School of Medicine, Yangsan, 50612, Republic of Korea.
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11
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Pongcharoen S, Spurkland A, Baldari CT. Editorial: Community series in adaptor molecules in T cell signaling, volume II. Front Immunol 2023; 14:1243039. [PMID: 37564638 PMCID: PMC10411338 DOI: 10.3389/fimmu.2023.1243039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 06/29/2023] [Indexed: 08/12/2023] Open
Affiliation(s)
- Sutatip Pongcharoen
- Division of Immunology, Department of Medicine, Faculty of Medicine, Naresuan University, Phitsanulok, Thailand
| | - Anne Spurkland
- Department of Molecular Medicine, Institute of Basal Medical Sciences, University of Oslo, Oslo, Norway
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12
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Chen H, Xu X, Hu W, Wu S, Xiao J, Wu P, Wang X, Han X, Zhang Y, Zhang Y, Jiang N, Liu W, Lou C, Chen W, Xu C, Lou J. Self-programmed dynamics of T cell receptor condensation. Proc Natl Acad Sci U S A 2023; 120:e2217301120. [PMID: 37399423 PMCID: PMC10334747 DOI: 10.1073/pnas.2217301120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 06/01/2023] [Indexed: 07/05/2023] Open
Abstract
A common event upon receptor-ligand engagement is the formation of receptor clusters on the cell surface, in which signaling molecules are specifically recruited or excluded to form signaling hubs to regulate cellular events. These clusters are often transient and can be disassembled to terminate signaling. Despite the general relevance of dynamic receptor clustering in cell signaling, the regulatory mechanism underlying the dynamics is still poorly understood. As a major antigen receptor in the immune system, T cell receptors (TCR) form spatiotemporally dynamic clusters to mediate robust yet temporal signaling to induce adaptive immune responses. Here we identify a phase separation mechanism controlling dynamic TCR clustering and signaling. The TCR signaling component CD3ε chain can condensate with Lck kinase through phase separation to form TCR signalosomes for active antigen signaling. Lck-mediated CD3ε phosphorylation, however, switched its binding preference to Csk, a functional suppressor of Lck, to cause the dissolvement of TCR signalosomes. Modulating TCR/Lck condensation by targeting CD3ε interactions with Lck or Csk directly affects T cell activation and function, highlighting the importance of the phase separation mechanism. The self-programmed condensation and dissolvement is thus a built-in mechanism of TCR signaling and might be relevant to other receptors.
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Affiliation(s)
- Hui Chen
- Key Laboratory of RNA Biology, Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing100101, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Xinyi Xu
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai200031, China
| | - Wei Hu
- Kidney Disease Center, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang310003, China
| | - Songfang Wu
- Key Laboratory of RNA Biology, Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing100101, China
| | - Jianhui Xiao
- Key Laboratory of RNA Biology, Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing100101, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Peng Wu
- Department of Cardiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang310058, China
- Department of Cell Biology, Zhejiang University School of Medicine, Hangzhou, Zhejiang310012, China
| | - Xiaowen Wang
- Key Laboratory of RNA Biology, Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing100101, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Xuling Han
- Key Laboratory of RNA Biology, Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing100101, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Yanruo Zhang
- Key Laboratory of RNA Biology, Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing100101, China
| | - Yong Zhang
- Key Laboratory of RNA Biology, Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing100101, China
- University of Chinese Academy of Sciences, Beijing100049, China
| | - Ning Jiang
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA19104
| | - Wanli Liu
- State Key Laboratory of Membrane Biology, Center for Life Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Institute for Immunology, School of Life Sciences, Tsinghua University, Beijing100084, China
| | - Changjie Lou
- Department of Gastrointestinal Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, Heilongjiang150001, China
| | - Wei Chen
- Department of Cardiology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang310058, China
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Ministry of Education Frontier Science Center for Brain Science & Brain-machine Integration, State Key Laboratory for Modern Optical Instrumentation Key Laboratory for Biomedical Engineering of the Ministry of Education, College of Biomedical Engineering and Instrument Science, Zhejiang University, Hangzhou, Zhejiang310012, China
- Zhejiang Laboratory for Systems and Precision Medicine, Zhejiang University Medical Center, Hangzhou, Zhejiang311121, China
| | - Chenqi Xu
- State Key Laboratory of Molecular Biology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai200031, China
- School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, Zhejiang310024, China
| | - Jizhong Lou
- Key Laboratory of RNA Biology, Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing100101, China
- University of Chinese Academy of Sciences, Beijing100049, China
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13
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Liu Y, Chen S, Liu S, Wallace KL, Zille M, Zhang J, Wang J, Jiang C. T-cell receptor signaling modulated by the co-receptors: Potential targets for stroke treatment. Pharmacol Res 2023; 192:106797. [PMID: 37211238 DOI: 10.1016/j.phrs.2023.106797] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/02/2023] [Accepted: 05/16/2023] [Indexed: 05/23/2023]
Abstract
Stroke is a severe and life-threatening disease, necessitating more research on new treatment strategies. Infiltrated T lymphocytes, an essential adaptive immune cell with extensive effector function, are crucially involved in post-stroke inflammation. Immediately after the initiation of the innate immune response triggered by microglia/macrophages, the adaptive immune response associated with T lymphocytes also participates in the complex pathophysiology of stroke and partially informs the outcome of stroke. Preclinical and clinical studies have revealed the conflicting roles of T cells in post-stroke inflammation and as potential therapeutic targets. Therefore, exploring the mechanisms that underlie the adaptive immune response associated with T lymphocytes in stroke is essential. The T-cell receptor (TCR) and its downstream signaling regulate T lymphocyte differentiation and activation. This review comprehensively summarizes the various molecules that regulate TCR signaling and the T-cell response. It covers both the co-stimulatory and co-inhibitory molecules and their roles in stroke. Because immunoregulatory therapies targeting TCR and its mediators have achieved great success in some proliferative diseases, this article also summarizes the advances in therapeutic strategies related to TCR signaling in lymphocytes after stroke, which can facilitate translation. DATA AVAILABILITY: No data was used for the research described in the article.
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Affiliation(s)
- Yuanyuan Liu
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, P. R. China
| | - Shuai Chen
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, P. R. China
| | - Simon Liu
- Medical Genomics Unit, National Human Genome Research Institute, Bethesda, MD, 20814, USA
| | - Kevin L Wallace
- College of Mathematical and Natural Sciences, University of Maryland, College Park, MD, 20742, USA
| | - Marietta Zille
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, A-1090 Vienna, Austria
| | - Jiewen Zhang
- Department of Neurology, People's Hospital of Zhengzhou University, 450000, Zhengzhou, P. R. China.
| | - Jian Wang
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, P. R. China; Department of Anatomy, School of Basic Medical Sciences, Zhengzhou University, 450001, Zhengzhou, P. R. China.
| | - Chao Jiang
- Department of Neurology, The Fifth Affiliated Hospital of Zhengzhou University, 450052, Zhengzhou, P. R. China.
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14
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Jiang B, Weinstock DM, Donovan KA, Sun HW, Wolfe A, Amaka S, Donaldson NL, Wu G, Jiang Y, Wilcox RA, Fischer ES, Gray NS, Wu W. ITK degradation to block T cell receptor signaling and overcome therapeutic resistance in T cell lymphomas. Cell Chem Biol 2023; 30:383-393.e6. [PMID: 37015223 PMCID: PMC10151063 DOI: 10.1016/j.chembiol.2023.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 01/06/2023] [Accepted: 03/13/2023] [Indexed: 04/05/2023]
Abstract
Interleukin (IL)-2-inducible T cell kinase (ITK) is essential for T cell receptor (TCR) signaling and plays an integral role in T cell proliferation and differentiation. Unlike the ITK homolog BTK, no inhibitors of ITK are currently US Food and Drug Administration (FDA) approved. In addition, recent studies have identified mutations within BTK that confer resistance to both covalent and non-covalent inhibitors. Here, as an alternative strategy, we report the development of BSJ-05-037, a potent and selective heterobifunctional degrader of ITK. BSJ-05-037 displayed enhanced anti-proliferative effects relative to its parent inhibitor BMS-509744, blocked the activation of NF-kB/GATA-3 signaling, and increased the sensitivity of T cell lymphoma cells to cytotoxic chemotherapy both in vitro and in vivo. In summary, targeted degradation of ITK is a novel approach to modulate TCR signal strength that could have broad application for the investigation and treatment of T cell-mediated diseases.
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Affiliation(s)
- Baishan Jiang
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - David M Weinstock
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Broad Institute of MIT and Harvard University, Cambridge, MA 02142, USA
| | - Katherine A Donovan
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Hong-Wei Sun
- Guangdong Provincial Key Laboratory of Tumor Interventional Diagnosis and Treatment, Zhuhai Institute of Translational Medicine, Zhuhai People's Hospital, Jinan University, Zhuhai, China
| | - Ashley Wolfe
- Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Sam Amaka
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Nicholas L Donaldson
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Gongwei Wu
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Center for Functional Cancer Epigenetics, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA, USA
| | - Yuan Jiang
- Department of Radiation and Medical Oncology, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, China
| | - Ryan A Wilcox
- Department of Internal Medicine, Division of Hematology and Oncology, University of Michigan, Ann Arbor, MI, USA
| | - Eric S Fischer
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02215, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA
| | - Nathanael S Gray
- Department of Chemical and Systems Biology, ChEM-H, Stanford Cancer Institute, School of Medicine, Stanford University, Stanford, CA 94305, USA.
| | - Wenchao Wu
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China.
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15
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Beckmann D, Langnaese K, Gottfried A, Hradsky J, Tedford K, Tiwari N, Thomas U, Fischer KD, Korthals M. Ca 2+ Homeostasis by Plasma Membrane Ca 2+ ATPase (PMCA) 1 Is Essential for the Development of DP Thymocytes. Int J Mol Sci 2023; 24:ijms24021442. [PMID: 36674959 PMCID: PMC9865543 DOI: 10.3390/ijms24021442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/22/2022] [Accepted: 12/30/2022] [Indexed: 01/13/2023] Open
Abstract
The strength of Ca2+ signaling is a hallmark of T cell activation, yet the role of Ca2+ homeostasis in developing T cells before expressing a mature T cell receptor is poorly understood. We aimed to unveil specific functions of the two plasma membrane Ca2+ ATPases expressed in T cells, PMCA1 and PMCA4. On a transcriptional and protein level we found that PMCA4 was expressed at low levels in CD4-CD8- double negative (DN) thymocytes and was even downregulated in subsequent stages while PMCA1 was present throughout development and upregulated in CD4+CD8+ double positive (DP) thymocytes. Mice with a targeted deletion of Pmca1 in DN3 thymocytes had an almost complete block of DP thymocyte development with an accumulation of DN4 thymocytes but severely reduced numbers of CD8+ immature single positive (ISP) thymocytes. The DN4 thymocytes of these mice showed strongly elevated basal cytosolic Ca2+ levels and a pre-mature CD5 expression, but in contrast to the DP thymocytes they were only mildly prone to apoptosis. Surprisingly, mice with a germline deletion of Pmca4 did not show any signs of altered progression through the developmental thymocyte stages, nor altered Ca2+ homeostasis throughout this process. PMCA1 is, therefore, non-redundant in keeping cellular Ca2+ levels low in the early thymocyte development required for the DN to DP transition.
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Affiliation(s)
- David Beckmann
- Institute for Biochemistry and Cell Biology, Medical Faculty, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
| | - Kristina Langnaese
- Institute for Biochemistry and Cell Biology, Medical Faculty, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
| | - Anna Gottfried
- Institute for Biochemistry and Cell Biology, Medical Faculty, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
| | - Johannes Hradsky
- Institute for Biochemistry and Cell Biology, Medical Faculty, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
| | - Kerry Tedford
- Institute for Biochemistry and Cell Biology, Medical Faculty, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
| | - Nikhil Tiwari
- Department of Cellular Neuroscience, Leibniz Institute for Neurobiology, 39120 Magdeburg, Germany
| | - Ulrich Thomas
- Department of Cellular Neuroscience, Leibniz Institute for Neurobiology, 39120 Magdeburg, Germany
| | - Klaus-Dieter Fischer
- Institute for Biochemistry and Cell Biology, Medical Faculty, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
- Correspondence:
| | - Mark Korthals
- Institute for Biochemistry and Cell Biology, Medical Faculty, Otto-von-Guericke-University Magdeburg, 39120 Magdeburg, Germany
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16
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du Halgouet A, Darbois A, Alkobtawi M, Mestdagh M, Alphonse A, Premel V, Yvorra T, Colombeau L, Rodriguez R, Zaiss D, El Morr Y, Bugaut H, Legoux F, Perrin L, Aractingi S, Golub R, Lantz O, Salou M. Role of MR1-driven signals and amphiregulin on the recruitment and repair function of MAIT cells during skin wound healing. Immunity 2023; 56:78-92.e6. [PMID: 36630919 PMCID: PMC9839364 DOI: 10.1016/j.immuni.2022.12.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 09/02/2022] [Accepted: 12/06/2022] [Indexed: 01/11/2023]
Abstract
Tissue repair processes maintain proper organ function following mechanical or infection-related damage. In addition to antibacterial properties, mucosal associated invariant T (MAIT) cells express a tissue repair transcriptomic program and promote skin wound healing when expanded. Herein, we use a human-like mouse model of full-thickness skin excision to assess the underlying mechanisms of MAIT cell tissue repair function. Single-cell RNA sequencing analysis suggested that skin MAIT cells already express a repair program at steady state. Following skin excision, MAIT cells promoted keratinocyte proliferation, thereby accelerating healing. Using skin grafts, parabiosis, and adoptive transfer experiments, we show that MAIT cells migrated into the wound in a T cell receptor (TCR)-independent but CXCR6 chemokine receptor-dependent manner. Amphiregulin secreted by MAIT cells following excision promoted wound healing. Expression of the repair function was probably independent of sustained TCR stimulation. Overall, our study provides mechanistic insights into MAIT cell wound healing function in the skin.
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Affiliation(s)
| | - Aurélie Darbois
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Mansour Alkobtawi
- Cutaneous Biology, Institut Cochin, Inserm 1016, and Université de Paris Cité, 75014 Paris, France
| | - Martin Mestdagh
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Aurélia Alphonse
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Virginie Premel
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Thomas Yvorra
- CNRS UMR 3666, INSERM U1143, Chemical Biology of Cancer Laboratory, PSL University, Institut Curie, 75005 Paris, France
| | - Ludovic Colombeau
- CNRS UMR 3666, INSERM U1143, Chemical Biology of Cancer Laboratory, PSL University, Institut Curie, 75005 Paris, France
| | - Raphaël Rodriguez
- CNRS UMR 3666, INSERM U1143, Chemical Biology of Cancer Laboratory, PSL University, Institut Curie, 75005 Paris, France
| | - Dietmar Zaiss
- Department of Immune Medicine, University of Regensburg, Regensburg, Germany,Institute of Clinical Chemistry and Laboratory Medicine, University Hospital Regensburg, Regensburg, Germany,Institute of Pathology, University Regensburg, Regensburg, Germany,Leibniz Institute for Immunotherapy (LIT), Regensburg, Germany
| | - Yara El Morr
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Hélène Bugaut
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - François Legoux
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Laetitia Perrin
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France
| | - Selim Aractingi
- Cutaneous Biology, Institut Cochin, Inserm 1016, and Université de Paris Cité, 75014 Paris, France
| | - Rachel Golub
- Institut Pasteur, Université Paris Cité, INSERM U1223, 75015 Paris, France
| | - Olivier Lantz
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France; Laboratoire d'Immunologie Clinique, Institut Curie, 75005 Paris, France; Centre d'investigation Clinique en Biothérapie Gustave-Roussy Institut Curie (CIC-BT1428), Institut Curie, 75005 Paris, France.
| | - Marion Salou
- INSERM U932, PSL University, Institut Curie, 75005 Paris, France.
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17
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Teixeiro E, Daniels MA. In Vitro Analysis of Thymocyte Signaling. Methods Mol Biol 2023; 2580:303-313. [PMID: 36374466 DOI: 10.1007/978-1-0716-2740-2_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
When a developing thymocyte expresses a TCR, it is subjected to numerous interactions with self-peptide/MHC complexes that determine its fate. These include death by neglect, negative selection (apoptosis and lineage deviation), positive selection, and lineage commitment. Identifying signals that govern these unique cell fates requires the ability to assess the activity, level of expression, subcellular location, and molecular associations between numerous proteins within the developing T cell. Given the unique, temporal, and developmental changes that occur during development, isolating and analyzing small populations of thymocytes are necessary to get a complete picture of the development process. Thus, this chapter describes methods designed to analyze thymocyte signaling under various types of peptide-based stimulation in vitro.
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Affiliation(s)
- Emma Teixeiro
- Department of Molecular Microbiology and Immunology, NextGen Precision Health, University of Missouri, Columbia, MO, USA
| | - Mark A Daniels
- Department of Molecular Microbiology and Immunology, NextGen Precision Health, University of Missouri, Columbia, MO, USA.
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18
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Ito-Kureha T, Heissmeyer V. Critical functions of N 6-adenosine methylation of mRNAs in T cells. Biochim Biophys Acta Mol Cell Res 2023; 1870:119380. [PMID: 36228837 DOI: 10.1016/j.bbamcr.2022.119380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/22/2022] [Accepted: 09/28/2022] [Indexed: 11/13/2022]
Abstract
The existence of N6-adenosine methylation (m6A) of mRNA has been known for a long time, but only recently its regulatory potential was uncovered. Current research deciphers the molecular determinants leading to the deposition of this modification and consequences for modified mRNAs. It also evaluates the importance of such modifications for specific cell types and programs. In this review, we summarize the current knowledge on m6A modification of mRNAs in conventional and regulatory T cells and T-cell-driven immune responses and pathology. We discuss the impact of m6A modification on T cell activation including cytokine and antigen receptor signaling or sensing of double-stranded RNAs (dsRNA).
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Affiliation(s)
- Taku Ito-Kureha
- Institute for Immunology, Biomedical Center, Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, 82152 Planegg-Martinsried, Germany.
| | - Vigo Heissmeyer
- Institute for Immunology, Biomedical Center, Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, 82152 Planegg-Martinsried, Germany; Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, 81377 Munich, Germany.
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19
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Chen JL, Barr JY, Zuk JJ, Gorman JV, Colgan JD. Reciprocal SH2-SH3 Domain Contacts between ITK Molecules Limit T Cell Receptor Signaling in Th2-type CD4 + T Cells. Immunol Invest 2022; 51:1612-1629. [PMID: 34844506 DOI: 10.1080/08820139.2021.2007262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The nonreceptor tyrosine kinase ITK is a key component of the T cell receptor (TCR) signaling pathway and is required for cytokine production by CD4+ T cells that have differentiated into Th2 cells. Structural and biochemical studies suggest that contacts between the SH2 and SH3 domains of ITK mediate intermolecular self-association, forming a structure that restrains ITK activity by interfering with interactions between ITK and other components of the TCR signaling pathway. Wild-type (WT) ITK and a panel of ITK mutants containing amino acid substitutions in the SH2 and SH3 domains were tested for self-association and for binding to the adaptor protein SLP76, a key ligand for the ITK SH2 domain. WT and ITK mutants were also expressed in Itk-deficient CD4+ T cells via retroviral-mediated gene delivery to analyze their ability to support TCR signaling and cytokine production by Th2 cells. Specific amino acid substitutions in the ITK SH2 or SH3 domains impaired self-association, with the greatest effects being seen when both intermolecular SH2-SH3 domain contacts were disrupted. Two of the SH2 domain substitutions tested reduced ITK self-association but had no effect on binding to SLP-76. When their function was analyzed in Th2 cells, ITK proteins with diminished self-association activity supported greater IL-4 production and calcium flux in response to TCR stimulation compared to WT ITK. Our findings indicate that intermolecular contacts between ITK molecules can restrain the amplitude of TCR signaling, suggesting ITK is a limiting factor for responses by CD4+ T cells.
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Affiliation(s)
- Ji-Long Chen
- Department of Internal Medicine, Roy J. And Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Jennifer Y Barr
- Department of Anatomy and Cell Biology, Roy J. And Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Jonathan J Zuk
- The Molecular Medicine Graduate Program, Roy J. And Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Jacob V Gorman
- The Immunology Graduate Program, Roy J. And Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - John D Colgan
- Department of Internal Medicine, Roy J. And Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.,Department of Anatomy and Cell Biology, Roy J. And Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.,The Molecular Medicine Graduate Program, Roy J. And Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA.,The Immunology Graduate Program, Roy J. And Lucille A. Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
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20
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Iyer VS, Boddul SV, Johnsson AK, Raposo B, Sharma RK, Shen Y, Kasza Z, Lim KW, Chemin K, Nilsson G, Malmström V, Phan AT, Wermeling F. Modulating T-cell activation with antisense oligonucleotides targeting lymphocyte cytosolic protein 2. J Autoimmun 2022; 131:102857. [PMID: 35780036 DOI: 10.1016/j.jaut.2022.102857] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/15/2022] [Accepted: 06/15/2022] [Indexed: 11/29/2022]
Abstract
Dysregulated T-cell activation is a hallmark of several autoimmune diseases such as rheumatoid arthritis (RA) and multiple sclerosis (MS). The lymphocyte cytosolic protein 2 (LCP2), also known as SLP-76, is essential for the development and activation of T cells. Despite the critical role of LCP2 in T-cell activation and the need for developing drugs that modify T-cell activation, no LCP2 inhibitors have been developed. This can be explained by the "undruggable" nature of LCP2, lacking a structure permissive to standard small molecule inhibitor modalities. Here, we explored an alternative drug modality, developing antisense oligonucleotides (ASOs) targeting LCP2 mRNAs, and evaluated its activity in modulating T-cell activation. We identified a set of 3' UTR targeting LCP2 ASOs, which knocked down LCP2 in a human T-cell line and primary human T cells and found that these suppressed T-cell receptor mediated activation. We also found that the ASOs suppressed FcεR1-mediated mast cell activation, in line with the role of LCP2 in mast cells. Taken together, our data provide examples of how immunomodulatory ASOs that interfere with undruggable targets can be developed and propose that such drug modalities can be used to treat autoimmune diseases.
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Affiliation(s)
- Vaishnavi Srinivasan Iyer
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden; School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Sanjaykumar V Boddul
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Anna-Karin Johnsson
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Bruno Raposo
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Ravi K Sharma
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Yunbing Shen
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Zsolt Kasza
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Kah Wai Lim
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Karine Chemin
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Gunnar Nilsson
- Division of Immunology and Allergy, Department of Medicine Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Vivianne Malmström
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden
| | - Anh Tuân Phan
- School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore.
| | - Fredrik Wermeling
- Center for Molecular Medicine, Division of Rheumatology, Department of Medicine, Solna, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.
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21
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Madi A, Weisshaar N, Buettner M, Poschet G, Ma S, Wu J, Mieg A, Hering M, Ming Y, Mohr K, Ten Bosch N, Cui G. CD8 agonism functionally activates memory T cells and enhances anti-tumor immunity. Int J Cancer 2022; 151:797-808. [PMID: 35499751 DOI: 10.1002/ijc.34059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/30/2022] [Accepted: 04/11/2022] [Indexed: 11/12/2022]
Abstract
Memory CD8+ T cells mature after antigen clearance and ultimately express CD8 protein at levels higher than those detected in effector CD8+ T cells. However, it is not clear whether engagement of CD8 in the absence of antigenic stimulation will result in the functional activation of T cells. Here, we found that CD8 antibody-mediated activation of memory CD8+ T cells triggered T cell receptor (TCR) downstream signaling, enhanced T cell-mediated cytotoxicity, and promoted effector cytokine production in a glucose- and glutamine-dependent manner. Furthermore, pretreatment of memory CD8+ T cells with an agonistic anti-CD8 antibody enhanced their tumoricidal activity in vitro and in vivo. From these studies, we conclude that CD8 agonism activates glucose and glutamine metabolism in memory T cells and enhances the efficacy of memory T cell-based cancer immunotherapy.
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Affiliation(s)
- Alaa Madi
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Nina Weisshaar
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Michael Buettner
- Metabolomics Core Technology Platform, Centre for Organismal Studies (COS), Heidelberg University, Heidelberg, Germany
| | - Gernot Poschet
- Metabolomics Core Technology Platform, Centre for Organismal Studies (COS), Heidelberg University, Heidelberg, Germany
| | - Sicong Ma
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Jingxia Wu
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Alessa Mieg
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Marvin Hering
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany
| | - Yanan Ming
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Kerstin Mohr
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Nora Ten Bosch
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Helmholtz Institute for Translational Oncology (HI-TRON), Mainz, Germany
| | - Guoliang Cui
- T Cell Metabolism Group (D192), German Cancer Research Center (DKFZ), Heidelberg, Germany.,Faculty of Biosciences, Heidelberg University, Heidelberg, Germany.,Helmholtz Institute for Translational Oncology (HI-TRON), Mainz, Germany
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22
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Borroto A, Alarcón B, Navarro MN. Mutation of the Polyproline Sequence in CD3ε Evidences TCR Signaling Requirements for Differentiation and Function of Pro-Inflammatory Tγδ17 Cells. Front Immunol 2022; 13:799919. [PMID: 35432331 PMCID: PMC9008450 DOI: 10.3389/fimmu.2022.799919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 03/09/2022] [Indexed: 11/23/2022] Open
Abstract
Tγδ17 cells have emerged as a key population in the development of inflammatory and autoimmune conditions such as psoriasis. Thus, the therapeutic intervention of Tγδ17 cells can exert protective effects in this type of pathologies. Tγδ cells commit to IL-17 production during thymus development, and upon immune challenge, additional extrathymic signals induce the differentiation of uncommitted Tγδ cells into Tγδ17 effector cells. Despite the interest in Tγδ17 cells during the past 20 years, the role of TCR signaling in the generation and function of Tγδ17 cells has not been completely elucidated. While some studies point to the notion that Tγδ17 differentiation requires weak or no TCR signaling, other works suggest that Tγδ17 require the participation of specific kinases and adaptor molecules downstream of the TCR. Here we have examined the differentiation and pathogenic function of Tγδ17 cells in “knockin” mice bearing conservative mutations in the CD3ε polyproline rich sequence (KI-PRS) with attenuated TCR signaling due to lack of binding of the essential adaptor Nck. KI-PRS mice presented decreased frequency and numbers of Tγδ17 cells in adult thymus and lymph nodes. In the Imiquimod model of skin inflammation, KI-PRS presented attenuated skin inflammation parameters compared to wild-type littermates. Moreover, the generation, expansion and effector function Tγδ17 cells were impaired in KI-PRS mice upon Imiquimod challenge. Thus, we conclude that an intact CD3ε-PRS sequence is required for optimal differentiation and pathogenic function of Tγδ17 cells. These data open new opportunities for therapeutic targeting of specific TCR downstream effectors for treatment of Tγδ17-mediated diseases.
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Affiliation(s)
- Aldo Borroto
- Interactions with the Environment Program, Centro Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Madrid, Spain
| | - Balbino Alarcón
- Interactions with the Environment Program, Centro Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Madrid, Spain
| | - María N Navarro
- Interactions with the Environment Program, Centro Biología Molecular Severo Ochoa, Consejo Superior de Investigaciones Científicas, Universidad Autónoma de Madrid, Madrid, Spain
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23
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Pankaew S, Potier D, Grosjean C, Nozais M, Quessada J, Loosveld M, Remy É, Payet-Bornet D. Calcium Signaling Is Impaired in PTEN-Deficient T Cell Acute Lymphoblastic Leukemia. Front Immunol 2022; 13:797244. [PMID: 35185889 PMCID: PMC8847596 DOI: 10.3389/fimmu.2022.797244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 01/17/2022] [Indexed: 11/13/2022] Open
Abstract
PTEN (Phosphatase and TENsin homolog) is a well-known tumor suppressor involved in numerous types of cancer, including T-cell acute lymphoblastic leukemia (T-ALL). In human, loss-of-function mutations of PTEN are correlated to mature T-ALL expressing a T-cell receptor (TCR) at their cell surface. In accordance with human T-ALL, inactivation of Pten gene in mouse thymocytes induces TCRαβ+ T-ALL development. Herein, we explored the functional interaction between TCRαβ signaling and PTEN. First, we performed single-cell RNA sequencing (scRNAseq) of PTEN-deficient and PTEN-proficient thymocytes. Bioinformatic analysis of our scRNAseq data showed that pathological Ptendel thymocytes express, as expected, Myc transcript, whereas inference of pathway activity revealed that these Ptendel thymocytes display a lower calcium pathway activity score compared to their physiological counterparts. We confirmed this result using ex vivo calcium flux assay and showed that upon TCR activation tumor Ptendel blasts were unable to release calcium ions (Ca2+) from the endoplasmic reticulum to the cytosol. In order to understand such phenomena, we constructed a mathematical model centered on the mechanisms controlling the calcium flux, integrating TCR signal strength and PTEN interactions. This qualitative model displays a dynamical behavior coherent with the dynamics reported in the literature, it also predicts that PTEN affects positively IP3 (inositol 1,4,5-trisphosphate) receptors (ITPR). Hence, we analyzed Itpr expression and unraveled that ITPR proteins levels are reduced in PTEN-deficient tumor cells compared to physiological and leukemic PTEN-proficient cells. However, calcium flux and ITPR proteins expression are not defective in non-leukemic PTEN-deficient T cells indicating that beyond PTEN loss an additional alteration is required. Altogether, our study shows that ITPR/Calcium flux is a part of the oncogenic landscape shaped by PTEN loss and pinpoints a putative role of PTEN in the regulation of ITPR proteins in thymocytes, which remains to be characterized.
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Affiliation(s)
- Saran Pankaew
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France.,Aix Marseille Univ, CNRS, I2M, Marseille, France
| | | | | | - Mathis Nozais
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Julie Quessada
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France
| | - Marie Loosveld
- Aix Marseille Univ, CNRS, INSERM, CIML, Marseille, France.,APHM, Hôpital La Timone, Laboratoire d'Hématologie, Marseille, France
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24
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Lory NC, Nawrocki M, Corazza M, Schmid J, Schumacher V, Bedke T, Menzel S, Koch-Nolte F, Guse AH, Huber S, Mittrücker HW. TRPM2 Is Not Required for T-Cell Activation and Differentiation. Front Immunol 2022; 12:778916. [PMID: 35095852 PMCID: PMC8795911 DOI: 10.3389/fimmu.2021.778916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 12/20/2021] [Indexed: 11/22/2022] Open
Abstract
Antigen recognition by the T-cell receptor induces a cytosolic Ca2+ signal that is crucial for T-cell function. The Ca2+ channel TRPM2 (transient receptor potential cation channel subfamily M member 2) has been shown to facilitate influx of extracellular Ca2+ through the plasma membrane of T cells. Therefore, it was suggested that TRPM2 is involved in T-cell activation and differentiation. However, these results are largely derived from in vitro studies using T-cell lines and non-physiologic means of TRPM2 activation. Thus, the relevance of TRPM2-mediated Ca2+ signaling in T cells remains unclear. Here, we use TRPM2-deficient mice to investigate the function of TRPM2 in T-cell activation and differentiation. In response to TCR stimulation in vitro, Trpm2-/- and WT CD4+ and CD8+ T cells similarly upregulated the early activation markers NUR77, IRF4, and CD69. We also observed regular proliferation of Trpm2-/- CD8+ T cells and unimpaired differentiation of CD4+ T cells into Th1, Th17, and Treg cells under specific polarizing conditions. In vivo, Trpm2-/- and WT CD8+ T cells showed equal specific responses to Listeria monocytogenes after infection of WT and Trpm2-/- mice and after transfer of WT and Trpm2-/- CD8+ T cells into infected recipients. CD4+ T-cell responses were investigated in the model of anti-CD3 mAb-induced intestinal inflammation, which allows analysis of Th1, Th17, Treg, and Tr1-cell differentiation. Here again, we detected similar responses of WT and Trpm2-/- CD4+ T cells. In conclusion, our results argue against a major function of TRPM2 in T-cell activation and differentiation.
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Affiliation(s)
- Niels C Lory
- Department for Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Mikolaj Nawrocki
- Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Section of Molecular Immunology and Gastroenterology, I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Martina Corazza
- Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Section of Molecular Immunology and Gastroenterology, I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Joanna Schmid
- Department for Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Valéa Schumacher
- Department for Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tanja Bedke
- Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Section of Molecular Immunology and Gastroenterology, I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Stephan Menzel
- Department for Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,The Calcium Signalling Group, Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Friedrich Koch-Nolte
- Department for Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Andreas H Guse
- Mildred Scheel Cancer Career Center HaTriCS4, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Samuel Huber
- Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Section of Molecular Immunology and Gastroenterology, I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Hans-Willi Mittrücker
- Department for Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Hamburg Center for Translational Immunology (HCTI), University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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25
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Li YY, Cen H, Gong BN, Mai S, Wang QL, Mou S, Li Y. TCR-Induced Tyrosine Phosphorylation at Tyr270 of SUMO Protease SENP1 by Lck Modulates SENP1 Enzyme Activity and Specificity. Front Cell Dev Biol 2022; 9:789348. [PMID: 35186948 PMCID: PMC8847397 DOI: 10.3389/fcell.2021.789348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/13/2021] [Indexed: 12/13/2022] Open
Abstract
Small ubiquitin-like modifier (SUMO) modification plays an important regulatory role in T cell receptor (TCR) signaling transduction. SUMO-specific proteases (SENPs) have dual-enzyme activities; they can both process SUMO precursors as endopeptidases and participate in SUMO deconjugation as isopeptidases. It remains unclear how the SUMO system, especially SENP1, is regulated by TCR signaling. Here, we show that Lck phosphorylates tyrosine 270 (Y270) of SENP1 upon TCR stimulation, indicating that SENP1 is a substrate of Lck. In vitro endopeptidase activity analysis showed that mutating SENP1 Y270 to either phenylalanine (F) to mimic the phosphorylation-defective state or to glutamate (E) to mimic the negative charge of tyrosine phosphorylation in the enzyme microenvironment did not change its endopeptidase activity towards pre-SUMO1. However, SENP1 Y270E but not Y270F mutation exhibited decreased endopeptidase activity towards pre-SUMO3. Through in vivo isopeptidase activity analysis by rescue expression of SENP1 and its Y270 mutants in a SENP1 CRISPR knockout T cell line, we found that SENP1 Y270F downregulated its isopeptidase activity towards both SUMO1 and SUMO2/3 conjugation by reducing SENP1 binding with sumoylated targets. While overexpression of SENP1 inhibited TCR-induced IL-2 production, overexpression of SENP1 Y270F enhanced it instead. In summary, TCR-induced Y270 phosphorylation of SENP1 may promote its isopeptidase activity and specifically decrease its endopeptidase activity against pre-SUMO3, which finely tunes activation of T cells.
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Affiliation(s)
- Yun-Yi Li
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Haohua Cen
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Bei-Ni Gong
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Siqi Mai
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Qi-Long Wang
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Sisi Mou
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yingqiu Li
- Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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26
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Kim S, Park GY, Park JS, Park J, Hong H, Lee Y. Regulation of positive and negative selection and TCR signaling during thymic T cell development by capicua. eLife 2021; 10:71769. [PMID: 34895467 PMCID: PMC8700290 DOI: 10.7554/elife.71769] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 12/10/2021] [Indexed: 12/27/2022] Open
Abstract
Central tolerance is achieved through positive and negative selection of thymocytes mediated by T cell receptor (TCR) signaling strength. Thus, dysregulation of the thymic selection process often leads to autoimmunity. Here, we show that Capicua (CIC), a transcriptional repressor that suppresses autoimmunity, controls the thymic selection process. Loss of CIC prior to T-cell lineage commitment impairs both positive and negative selection of thymocytes. CIC deficiency attenuated TCR signaling in CD4+CD8+ double-positive (DP) cells, as evidenced by a decrease in CD5 and phospho-ERK levels and calcium flux. We identified Spry4, Dusp4, Dusp6, and Spred1 as CIC target genes that could inhibit TCR signaling in DP cells. Furthermore, impaired positive selection and TCR signaling were partially rescued in Cic and Spry4 double mutant mice. Our findings indicate that CIC is a transcription factor required for thymic T cell development and suggests that CIC acts at multiple stages of T cell development and differentiation to prevent autoimmunity.
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Affiliation(s)
- Soeun Kim
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Guk-Yeol Park
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Jong Seok Park
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Jiho Park
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Hyebeen Hong
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Yoontae Lee
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea.,Institute of Convergence Science, Yonsei University, Seoul, Republic of Korea
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27
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Elliot TAE, Jennings EK, Lecky DAJ, Thawait N, Flores-Langarica A, Copland A, Maslowski KM, Wraith DC, Bending D. Antigen and checkpoint receptor engagement recalibrates T cell receptor signal strength. Immunity 2021; 54:2481-2496.e6. [PMID: 34534438 PMCID: PMC8585507 DOI: 10.1016/j.immuni.2021.08.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 06/21/2021] [Accepted: 08/17/2021] [Indexed: 12/17/2022]
Abstract
How T cell receptor (TCR) signal strength modulates T cell function and to what extent this is modified by immune checkpoint blockade (ICB) are key questions in immunology. Using Nr4a3-Tocky mice, we characterized early quantitative and qualitative changes that occur in CD4+ T cells in relation to TCR signaling strength. We captured how dose- and time-dependent programming of distinct co-inhibitory receptors rapidly recalibrates T cell activation thresholds and visualized the immediate effects of ICB on T cell re-activation. Our findings reveal that anti-PD1 immunotherapy leads to an increased TCR signal strength. We defined a strong TCR signal metric of five genes upregulated by anti-PD1 in T cells (TCR.strong), which was superior to a canonical T cell activation gene signature in stratifying melanoma patient outcomes to anti-PD1 therapy. Our study therefore reveals how analysis of TCR signal strength-and its manipulation-can provide powerful metrics for monitoring outcomes to immunotherapy.
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Affiliation(s)
- Thomas A E Elliot
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Emma K Jennings
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - David A J Lecky
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Natasha Thawait
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Adriana Flores-Langarica
- Infrastructure and Facilities, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Alastair Copland
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Kendle M Maslowski
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - David C Wraith
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - David Bending
- Institute of Immunology and Immunotherapy, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK.
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28
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Madhok A, Bhat SA, Philip CS, Sureshbabu SK, Chiplunkar S, Galande S. Transcriptome Signature of Vγ9Vδ2 T Cells Treated With Phosphoantigens and Notch Inhibitor Reveals Interplay Between TCR and Notch Signaling Pathways. Front Immunol 2021; 12:660361. [PMID: 34526984 PMCID: PMC8435775 DOI: 10.3389/fimmu.2021.660361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 08/05/2021] [Indexed: 11/13/2022] Open
Abstract
Gamma delta (γδ) T cells, especially the Vγ9Vδ2 subtype, have been implicated in cancer therapy and thus have earned the spotlight in the past decade. Although one of the most important properties of γδ T cells is their activation by phosphoantigens, which are intermediates of the Mevalonate and Rohmer pathway of isoprenoid biosynthesis, such as IPP and HDMAPP, respectively, the global effects of such treatments on Vγ9Vδ2 T cells remain elusive. Here, we used the high-throughput transcriptomics approach to elucidate the transcriptional changes in human Vγ9Vδ2 T cells upon HDMAPP, IPP, and anti-CD3 treatments in combination with interleukin 2 (IL2) cytokine stimulation. These activation treatments exhibited a dramatic surge in transcription with distinctly enriched pathways. We further assessed the transcriptional dynamics upon inhibition of Notch signaling coupled with activation treatments. We observed that the metabolic processes are most affected upon Notch inhibition via GSI-X. The key effector genes involved in gamma-delta cytotoxic function were downregulated upon Notch blockade even in combination with activation treatment, suggesting a transcriptional crosstalk between T-cell receptor (TCR) signaling and Notch signaling in Vγ9Vδ2 T cells. Collectively, we demonstrate the effect of the activation of TCR signaling by phosphoantigens or anti-CD3 on the transcriptional status of Vγ9Vδ2 T cells along with IL2 stimulation. We further show that the blockade of Notch signaling antagonistically affects this activation.
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Affiliation(s)
- Ayush Madhok
- Centre of Excellence in Epigenetics, Department of Biology, Indian Institute of Science and Education and Research (IISER), Pune, India
| | - Sajad Ahmad Bhat
- Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Chinna Susan Philip
- Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Shalini Kashipathi Sureshbabu
- Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Shubhada Chiplunkar
- Advanced Centre for Treatment, Research and Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, India.,Homi Bhabha National Institute (HBNI), Mumbai, India
| | - Sanjeev Galande
- Centre of Excellence in Epigenetics, Department of Biology, Indian Institute of Science and Education and Research (IISER), Pune, India.,Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Greater Noida, India
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29
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Abstract
Once thought of primarily as a means to neutralize pathogens or to facilitate feeding, endocytosis is now known to regulate a wide range of eukaryotic cell processes. Among these are regulation of signal transduction, mitosis, lipid homeostasis, and directed migration, among others. Less well-appreciated are the roles various forms of endocytosis plays in regulating αβ and, especially, γδ T cell functions, such as T cell receptor signaling, antigen discovery by trogocytosis, and activated cell growth. Herein we examine the contribution of both clathrin-mediated and clathrin-independent mechanisms of endocytosis to T cell biology. Video Abstract
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Affiliation(s)
- John C Charpentier
- Department of Microbiology and Immunology, University of Michigan Medical School, 6606 Med Sci II, 1150 West Medical Center Drive, Ann Arbor, MI, 48109-5620, USA
| | - Philip D King
- Department of Microbiology and Immunology, University of Michigan Medical School, 6606 Med Sci II, 1150 West Medical Center Drive, Ann Arbor, MI, 48109-5620, USA.
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30
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Zhang J, Wencker M, Marliac Q, Berton A, Hasan U, Schneider R, Laubreton D, Cherrier DE, Mathieu AL, Rey A, Jiang W, Caramel J, Genestier L, Marçais A, Marvel J, Ghavi-Helm Y, Walzer T. Zeb1 represses TCR signaling, promotes the proliferation of T cell progenitors and is essential for NK1.1 + T cell development. Cell Mol Immunol 2021; 18:2140-2152. [PMID: 32398809 PMCID: PMC8429412 DOI: 10.1038/s41423-020-0459-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 01/15/2023] Open
Abstract
T cell development proceeds under the influence of a network of transcription factors (TFs). The precise role of Zeb1, a member of this network, remains unclear. Here, we report that Zeb1 expression is induced early during T cell development in CD4-CD8- double-negative (DN) stage 2 (DN2). Zeb1 expression was further increased in the CD4+CD8+ double-positive (DP) stage before decreasing in more mature T cell subsets. We performed an exhaustive characterization of T cells in Cellophane mice that bear Zeb1 hypomorphic mutations. The Zeb1 mutation profoundly affected all thymic subsets, especially DN2 and DP cells. Zeb1 promoted the survival and proliferation of both cell populations in a cell-intrinsic manner. In the periphery of Cellophane mice, the number of conventional T cells was near normal, but invariant NKT cells, NK1.1+ γδ T cells and Ly49+ CD8 T cells were virtually absent. This suggested that Zeb1 regulates the development of unconventional T cell types from DP progenitors. A transcriptomic analysis of WT and Cellophane DP cells revealed that Zeb1 regulated the expression of multiple genes involved in the cell cycle and TCR signaling, which possibly occurred in cooperation with Tcf1 and Heb. Indeed, Cellophane DP cells displayed stronger signaling than WT DP cells upon TCR engagement in terms of the calcium response, phosphorylation events, and expression of early genes. Thus, Zeb1 is a key regulator of the cell cycle and TCR signaling during thymic T cell development. We propose that thymocyte selection is perturbed in Zeb1-mutated mice in a way that does not allow the survival of unconventional T cell subsets.
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Affiliation(s)
- Jiang Zhang
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, China
| | - Mélanie Wencker
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Quentin Marliac
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Aurore Berton
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Uzma Hasan
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Raphaël Schneider
- Institut de Génomique Fonctionnelle de Lyon, CNRS UMR 5242, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, 46 allée d'Italie, F-69364, Lyon, France
| | - Daphné Laubreton
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Dylan E Cherrier
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Anne-Laure Mathieu
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Amaury Rey
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Wenzheng Jiang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, China
| | - Julie Caramel
- CRCL, Centre de Recherche sur le Cancer de Lyon, INSERM U1052-CNRS UMR5286, Centre Léon Bérard, Université Claude Bernard Lyon 1, Lyon, France
| | - Laurent Genestier
- CRCL, Centre de Recherche sur le Cancer de Lyon, INSERM U1052-CNRS UMR5286, Centre Léon Bérard, Université Claude Bernard Lyon 1, Lyon, France
| | - Antoine Marçais
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Jacqueline Marvel
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France
| | - Yad Ghavi-Helm
- Institut de Génomique Fonctionnelle de Lyon, CNRS UMR 5242, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, 46 allée d'Italie, F-69364, Lyon, France
| | - Thierry Walzer
- CIRI, Centre International de Recherche en Infectiologie, Univ Lyon, Inserm, U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, F-69007, Lyon, France.
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31
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Cassioli C, Balint S, Compeer EB, Felce JH, Gamberucci A, Della Bella C, Felce SL, Brunetti J, Valvo S, Pende D, D’Elios MM, Moretta L, Dustin ML, Baldari CT. Increasing LFA-1 Expression Enhances Immune Synapse Architecture and T Cell Receptor Signaling in Jurkat E6.1 Cells. Front Cell Dev Biol 2021; 9:673446. [PMID: 34368126 PMCID: PMC8343233 DOI: 10.3389/fcell.2021.673446] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 06/21/2021] [Indexed: 11/21/2022] Open
Abstract
The Jurkat E6.1 clone has been extensively used as a powerful tool for the genetic and biochemical dissection of the TCR signaling pathway. More recently, these cells have been exploited in imaging studies to identify key players in immunological synapse (IS) assembly in superantigen-specific conjugates and to track the dynamics of signaling molecules on glass surfaces coated with activating anti-CD3 antibodies. By comparison, Jurkat cells have been used only scantily for imaging on supported lipid bilayers (SLBs) incorporating laterally mobile TCR and integrin ligands, which allow to study synaptic rearrangements of surface molecules and the fine architecture of the mature IS, likely due to limitations in the assembly of immune synapses with well-defined architecture. Here we have explored whether upregulating the low levels of endogenous LFA-1 expression on Jurkat E6.1 cells through transduction with CD11a- and CD18-encoding lentiviruses can improve IS architecture. We show that, while forced LFA-1 expression did not affect TCR recruitment to the IS, E6.1 LFA-1 high cells assembled better structured synapses, with a tighter distribution of signaling-competent TCRs at the center of the IS. LFA-1 upregulation enhanced protein phosphotyrosine signaling on SLBs but not at the IS formed in conjugates with SEE-pulsed APCs, and led to the constitutive formation of an intracellular phosphotyrosine pool co-localizing with endosomal CD3ζ. This was paralleled by an increase in the levels of p-ZAP-70 and p-Erk both under basal conditions and following activation, and in enhanced Ca2+ mobilization from intracellular stores. The enhancement in early signaling E6.1 LFA-1 high cells did not affect expression of the early activation marker CD69 but led to an increase in IL-2 expression. Our results highlight a new role for LFA-1 in the core architecture of the IS that can be exploited to study the spatiotemporal redistribution of surface receptors on SLBs, thereby extending the potential of E6.1 cells and their derivatives for fine-scale imaging studies.
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Affiliation(s)
- Chiara Cassioli
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Stefan Balint
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Ewoud B. Compeer
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - James H. Felce
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Alessandra Gamberucci
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Chiara Della Bella
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Suet Ling Felce
- Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Jlenia Brunetti
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Salvatore Valvo
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
| | - Daniela Pende
- IRCCS Ospedale Policlinico San Martino, Genova, Italy
| | - Mario M. D’Elios
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | | | - Michael L. Dustin
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom
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32
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Chen ELY, Lee CR, Thompson PK, Wiest DL, Anderson MK, Zúñiga-Pflücker JC. Ontogenic timing, T cell receptor signal strength, and Notch signaling direct γδ T cell functional differentiation in vivo. Cell Rep 2021; 35:109227. [PMID: 34107257 PMCID: PMC8256923 DOI: 10.1016/j.celrep.2021.109227] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 02/20/2021] [Accepted: 05/14/2021] [Indexed: 12/29/2022] Open
Abstract
γδ T cells form an integral arm of the immune system and are critical during protective and destructive immunity. However, how γδ T cells are functionally programmed in vivo remains unclear. Here, we employ RBPJ-inducible and KN6-transgenic mice to assess the roles of ontogenic timing, T cell receptor (TCR) signal strength, and Notch signaling. We find skewing of Vγ1+ cells toward the PLZF+Lin28b+ lineage at the fetal stage. Generation of interleukin-17 (IL-17)-producing γδ T cells is favored during, although not exclusive to, the fetal stage. Surprisingly, Notch signaling is dispensable for peripheral γδ T cell IL-17 production. Strong TCR signals, together with Notch, promote IL-4 differentiation. Conversely, less strong TCR signals promote Notch-independent IL-17 differentiation. Single-cell transcriptomic analysis reveals differential programming instilled by TCR signal strength and Notch for specific subsets. Thus, our results precisely define the roles of ontogenic timing, TCR signal strength, and Notch signaling in γδ T cell functional programming in vivo.
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Affiliation(s)
- Edward L Y Chen
- Sunnybrook Research Institute, Toronto, ON, Canada; Department of Immunology, University of Toronto, Toronto, ON, Canada
| | | | | | - David L Wiest
- Blood Cell Development and Function, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Michele K Anderson
- Sunnybrook Research Institute, Toronto, ON, Canada; Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Juan Carlos Zúñiga-Pflücker
- Sunnybrook Research Institute, Toronto, ON, Canada; Department of Immunology, University of Toronto, Toronto, ON, Canada.
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33
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Weulersse M, Asrir A, Pichler AC, Lemaitre L, Braun M, Carrié N, Joubert MV, Le Moine M, Do Souto L, Gaud G, Das I, Brauns E, Scarlata CM, Morandi E, Sundarrajan A, Cuisinier M, Buisson L, Maheo S, Kassem S, Agesta A, Pérès M, Verhoeyen E, Martinez A, Mazieres J, Dupré L, Gossye T, Pancaldi V, Guillerey C, Ayyoub M, Dejean AS, Saoudi A, Goriely S, Avet-Loiseau H, Bald T, Smyth MJ, Martinet L. Eomes-Dependent Loss of the Co-activating Receptor CD226 Restrains CD8 + T Cell Anti-tumor Functions and Limits the Efficacy of Cancer Immunotherapy. Immunity 2021; 53:824-839.e10. [PMID: 33053331 DOI: 10.1016/j.immuni.2020.09.006] [Citation(s) in RCA: 73] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 05/15/2020] [Accepted: 09/10/2020] [Indexed: 01/16/2023]
Abstract
CD8+ T cells within the tumor microenvironment (TME) are exposed to various signals that ultimately determine functional outcomes. Here, we examined the role of the co-activating receptor CD226 (DNAM-1) in CD8+ T cell function. The absence of CD226 expression identified a subset of dysfunctional CD8+ T cells present in peripheral blood of healthy individuals. These cells exhibited reduced LFA-1 activation, altered TCR signaling, and a distinct transcriptomic program upon stimulation. CD226neg CD8+ T cells accumulated in human and mouse tumors of diverse origin through an antigen-specific mechanism involving the transcriptional regulator Eomesodermin (Eomes). Despite similar expression of co-inhibitory receptors, CD8+ tumor-infiltrating lymphocyte failed to respond to anti-PD-1 in the absence of CD226. Immune checkpoint blockade efficacy was hampered in Cd226-/- mice. Anti-CD137 (4-1BB) agonists also stimulated Eomes-dependent CD226 loss that limited the anti-tumor efficacy of this treatment. Thus, CD226 loss restrains CD8+ T cell function and limits the efficacy of cancer immunotherapy.
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Affiliation(s)
- Marianne Weulersse
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France
| | - Assia Asrir
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France
| | - Andrea C Pichler
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France
| | - Lea Lemaitre
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France
| | - Matthias Braun
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Nadège Carrié
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France
| | - Marie-Véronique Joubert
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Marie Le Moine
- UCR-I (ULB Centre for Research in Immunology), Université Libre de Bruxelles, Institute for Medical Immunology (IMI), Gosselies, 6041 Belgium
| | - Laura Do Souto
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Guillaume Gaud
- Centre de physiopathologie de Toulouse Purpan (CPTP), INSERM UMR 1043, CNRS UMR 5282, UPS, Toulouse, France
| | - Indrajit Das
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Elisa Brauns
- UCR-I (ULB Centre for Research in Immunology), Université Libre de Bruxelles, Institute for Medical Immunology (IMI), Gosselies, 6041 Belgium
| | - Clara M Scarlata
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Elena Morandi
- Centre de physiopathologie de Toulouse Purpan (CPTP), INSERM UMR 1043, CNRS UMR 5282, UPS, Toulouse, France
| | | | - Marine Cuisinier
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Laure Buisson
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Sabrina Maheo
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Sahar Kassem
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France
| | - Arantxa Agesta
- Centre de physiopathologie de Toulouse Purpan (CPTP), INSERM UMR 1043, CNRS UMR 5282, UPS, Toulouse, France
| | - Michaël Pérès
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Els Verhoeyen
- Université Côte d'Azur, INSERM, C3M, Nice, France; Centre international de recherche en infectiologie (CIRI), Inserm U1111, CNRS UMR5308, Ecole Normale Supérieure de Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Alejandra Martinez
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Julien Mazieres
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Loïc Dupré
- Centre de physiopathologie de Toulouse Purpan (CPTP), INSERM UMR 1043, CNRS UMR 5282, UPS, Toulouse, France; Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria
| | - Thomas Gossye
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France
| | - Vera Pancaldi
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Barcelona Supercomputing Center, Barcelona, Spain
| | - Camille Guillerey
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Maha Ayyoub
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Anne S Dejean
- Centre de physiopathologie de Toulouse Purpan (CPTP), INSERM UMR 1043, CNRS UMR 5282, UPS, Toulouse, France
| | - Abdelhadi Saoudi
- Centre de physiopathologie de Toulouse Purpan (CPTP), INSERM UMR 1043, CNRS UMR 5282, UPS, Toulouse, France
| | - Stanislas Goriely
- UCR-I (ULB Centre for Research in Immunology), Université Libre de Bruxelles, Institute for Medical Immunology (IMI), Gosselies, 6041 Belgium
| | - Hervé Avet-Loiseau
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France
| | - Tobias Bald
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Mark J Smyth
- QIMR Berghofer Medical Research Institute, Herston, Queensland, Australia
| | - Ludovic Martinet
- Cancer Research Center of Toulouse (CRCT), Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1037, Centre National de la Recherche Scientifique (CNRS), Université Paul Sabatier (UPS), Toulouse, France; Institut Universitaire du Cancer, CHU Toulouse, France.
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34
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O'Brien SA, Zhu M, Zhang W. Spontaneous Differentiation of T Follicular Helper Cells in LATY136F Mutant Mice. Front Immunol 2021; 12:656817. [PMID: 33912184 PMCID: PMC8072119 DOI: 10.3389/fimmu.2021.656817] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/22/2021] [Indexed: 11/29/2022] Open
Abstract
Mice with a mutation at the LAT-PLCγ1 binding site (Y136) have a defect in thymocyte development due to dampened TCR signaling. CD4+ T cells that do reach the periphery are hyper-activated and skewed to Th2. Over time, these mice develop an autoimmune-like syndrome, characterize by overproduction of Th2 cytokines, T cell infiltration into various organs, and B cell activation, isotype switching, and autoantibody production. In this study, we examined IL4 production by CD4+ T cells in the LATY136F mice using the KN2 reporter mice, in which human CD2 expression marks T cells that are actively producing IL4 protein. We showed that these mice had spontaneous Tfh differentiation. Despite the fact that the majority of CD4+ T cells were skewed to Th2 and were GATA3+, only a small subset of them were actively secreting IL4. These T cells were Tfh cells that expressed BCL6 and were localized to B cell-rich germinal centers within the spleen. Interestingly, these Tfh cells expressed high levels of both BCL6 and GATA3. By using LAT conditional knockout mice that inducibly express only the LATY136F allele, we further showed that Tfh cell differentiation was likely the result of defective LAT-PLCγ1 signaling in the periphery. In addition, B cells were required for spontaneous development of Tfh cells and uncontrolled T cell expansion in these mice. Together, these results indicated a novel role for tonic LAT-PLCγ1 signaling in modulating Tfh cell differentiation during development of autoimmune syndrome.
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Affiliation(s)
- Sarah A O'Brien
- Department of Immunology, Duke University Medical Center, Durham, NC, United States
| | - Minghua Zhu
- Department of Immunology, Duke University Medical Center, Durham, NC, United States
| | - Weiguo Zhang
- Department of Immunology, Duke University Medical Center, Durham, NC, United States.,Suzhou Institute of Systems Medicine, Chinese Academy of Medical Sciences, Suzhou, China
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35
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Su FY, Huang SC, Wei PC, Hsu PH, Li JP, Su LW, Hsieh YL, Hu CM, Hsu JL, Yang CY, Chung CY, Shew JY, Lan JL, Sytwu HK, Lee EYH, Lee WH. Redox sensor NPGPx restrains ZAP70 activity and modulates T cell homeostasis. Free Radic Biol Med 2021; 165:368-384. [PMID: 33460768 DOI: 10.1016/j.freeradbiomed.2021.01.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 01/02/2021] [Accepted: 01/07/2021] [Indexed: 10/22/2022]
Abstract
Emerging evidences implicate the contribution of ROS to T cell activation and signaling. The tyrosine kinase, ζ-chain-associated protein of 70 kDa (ZAP70), is essential for T cell development and activation. However, it remains elusive whether a direct redox regulation affects ZAP70 activity upon TCR stimulation. Here, we show that deficiency of non-selenocysteine containing phospholipid hydroperoxide glutathione peroxidase (NPGPx), a redox sensor, results in T cell hyperproliferation and elevated cytokine productions. T cell-specific NPGPx-knockout mice reveal enhanced T-dependent humoral responses and are susceptible to experimental autoimmune encephalomyelitis (EAE). Through proteomic approaches, ZAP70 is identified as the key interacting protein of NPGPx through disulfide bonding. NPGPx is activated by ROS generated from TCR stimulation, and modulates ZAP70 activity through redox switching to reduce ZAP70 recruitment to TCR/CD3 complex in membrane lipid raft, therefore subduing TCR responses. These results reveal a delicate redox mechanism that NPGPx serves as a modulator to curb ZAP70 functions in maintaining T cell homeostasis.
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Affiliation(s)
- Fang-Yi Su
- Genomics Research Center, Academia Sinica, Taipei, Taiwan; Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan
| | | | - Pei-Chi Wei
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Pang-Hung Hsu
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei, Taiwan; Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan
| | - Ju-Pi Li
- Division of Rheumatology and Immunology and Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan; School of Chinese Medicine, China Medical University, Taichung, Taiwan
| | - Li-Wen Su
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Yung-Lin Hsieh
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Chun-Mei Hu
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Jye-Lin Hsu
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan; Drug Development Research Center, China Medical University, Taichung, Taiwan
| | | | - Chen-Yen Chung
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Jin-Yuh Shew
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Joung-Liang Lan
- Division of Rheumatology and Immunology and Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Huey-Kang Sytwu
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Taipei, Taiwan; National Institute of Infectious Diseases and Vaccinology, National Health Research Institutes, Zhunan, Taiwan
| | - Eva Y-Hp Lee
- Department of Biological Chemistry, University of California, Irvine, Irvine, CA, USA
| | - Wen-Hwa Lee
- Genomics Research Center, Academia Sinica, Taipei, Taiwan; Drug Development Research Center, China Medical University, Taichung, Taiwan; Department of Biological Chemistry, University of California, Irvine, Irvine, CA, USA.
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36
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Zheng S, Huang K, Xia W, Shi J, Liu Q, Zhang X, Li G, Chen J, Wang T, Chen X, Xiang AP. Mesenchymal Stromal Cells Rapidly Suppress TCR Signaling-Mediated Cytokine Transcription in Activated T Cells Through the ICAM-1/CD43 Interaction. Front Immunol 2021; 12:609544. [PMID: 33692786 PMCID: PMC7937648 DOI: 10.3389/fimmu.2021.609544] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 02/01/2021] [Indexed: 12/15/2022] Open
Abstract
Cell-cell contact participates in the process of mesenchymal stromal cell (MSC)-mediated T cell modulation and thus contributes to MSC-based therapies for various inflammatory diseases, especially T cell-mediated diseases. However, the mechanisms underlying the adhesion interactions between MSCs and T cells are still poorly understood. In this study, we explored the interaction between MSCs and T cells and found that activated T cells could rapidly adhere to MSCs, leading to significant reduction of TNF-α and IFN-γ mRNA expression. Furthermore, TCR-proximal signaling in activated T cells was also dramatically suppressed in the MSC co-culture, resulting in weakened Ca2+ signaling. MSCs rapidly suppressed TCR signaling and its downstream signaling in a cell-cell contact-dependent manner, partially through the ICAM-1/CD43 adhesion interaction. Blockade of either ICAM-1 on MSCs or CD43 on T cells significantly reversed this rapid suppression of proinflammatory cytokine expression in T cells. Mechanistically, MSC-derived ICAM-1 likely disrupts CD43-mediated TCR microcluster formation to limit T cell activation. Taken together, our results reveal a fast mechanism of activated T cell inhibition by MSCs, which provides new clues to unravel the MSC-mediated immunoregulatory mechanism for aGVHD and other severe acute T cell-related diseases.
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Affiliation(s)
- Shuwei Zheng
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Guangzhou, China
| | - Ke Huang
- Department of Pediatrics, Sun Yat-sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Wenjie Xia
- Guangzhou Blood Centre, Institute of Blood Transfusion, Guangzhou, China
| | - Jiahao Shi
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Guangzhou, China
| | - Qiuli Liu
- The Biotherapy Center, The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiaoran Zhang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Guangzhou, China
| | - Gang Li
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Guangzhou, China
| | - Jieying Chen
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Guangzhou, China
| | - Tao Wang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Guangzhou, China
| | - Xiaoyong Chen
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Guangzhou, China.,Department of Pathophysiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Andy Peng Xiang
- Key Laboratory for Stem Cells and Tissue Engineering, Ministry of Education, Center for Stem Cell Biology and Tissue Engineering, Sun Yat-sen University, Guangzhou, China.,Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.,Guangzhou Regenerative Medicine and Health Guangdong Laboratory, Guangzhou, China
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37
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Fahl SP, Contreras AV, Verma A, Qiu X, Harly C, Radtke F, Zúñiga-Pflücker JC, Murre C, Xue HH, Sen JM, Wiest DL. The E protein-TCF1 axis controls γδ T cell development and effector fate. Cell Rep 2021; 34:108716. [PMID: 33535043 DOI: 10.1016/j.celrep.2021.108716] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 11/27/2020] [Accepted: 01/12/2021] [Indexed: 12/25/2022] Open
Abstract
TCF1 plays a critical role in T lineage commitment and the development of αβ lineage T cells, but its role in γδ T cell development remains poorly understood. Here, we reveal a regulatory axis where T cell receptor (TCR) signaling controls TCF1 expression through an E-protein-bound regulatory element in the Tcf7 locus, and this axis regulates both γδ T lineage commitment and effector fate. Indeed, the level of TCF1 expression plays an important role in setting the threshold for γδ T lineage commitment and modulates the ability of TCR signaling to influence effector fate adoption by γδ T lineage progenitors. This finding provides mechanistic insight into how TCR-mediated repression of E proteins promotes the development of γδ T cells and their adoption of the interleukin (IL)-17-producing effector fate. IL-17-producing γδ T cells have been implicated in cancer progression and in the pathogenesis of psoriasis and multiple sclerosis.
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38
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Kowallik S, Kritikos A, Kästle M, Thurm C, Schraven B, Simeoni L. The Activity and Stability of p56Lck and TCR Signaling Do Not Depend on the Co-Chaperone Cdc37. Int J Mol Sci 2020; 22:E126. [PMID: 33374422 DOI: 10.3390/ijms22010126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 11/16/2022] Open
Abstract
Lymphocyte-specific protein tyrosine kinase (Lck) is a pivotal tyrosine kinase involved in T cell receptor (TCR) signaling. Because of its importance, the activity of Lck is regulated at different levels including phosphorylation of tyrosine residues, protein-protein interactions, and localization. It has been proposed that the co-chaperone Cdc37, which assists the chaperone heat shock protein 90 (Hsp90) in the folding of client proteins, is also involved in the regulation of the activity/stability of Lck. Nevertheless, the available experimental data do not clearly support this conclusion. Thus, we assessed whether or not Cdc37 regulates Lck. We performed experiments in which the expression of Cdc37 was either augmented or suppressed in Jurkat T cells. The results of our experiments indicated that neither the overexpression nor the suppression of Cdc37 affected Lck stability and activity. Moreover, TCR signaling proceeded normally in T cells in which Cdc37 expression was either augmented or suppressed. Finally, we demonstrated that also under stress conditions Cdc37 was dispensable for the regulation of Lck activity/stability. In conclusion, our data do not support the idea that Lck is a Cdc37 client.
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39
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Castellano F, Molinier-Frenkel V. Control of T-Cell Activation and Signaling by Amino-Acid Catabolizing Enzymes. Front Cell Dev Biol 2020; 8:613416. [PMID: 33392202 PMCID: PMC7773816 DOI: 10.3389/fcell.2020.613416] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 11/30/2020] [Indexed: 12/12/2022] Open
Abstract
Amino acids are essential for protein synthesis, epigenetic modification through the methylation of histones, and the maintenance of a controlled balance of oxidoreduction via the production of glutathione and are precursors of certain neurotransmitters. T lymphocytes are particularly sensitive to fluctuations in amino acid levels. During evolution, the production of amino-acid catabolizing enzymes by mainly antigen-presenting cells has become a physiological mechanism to control T-cell activation and polarization. The action of these enzymes interferes with TCR and co-stimulation signaling, allowing tuning of the T-cell response. These capacities can be altered in certain pathological conditions, with relevant consequences for the development of disease.
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Affiliation(s)
- Flavia Castellano
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France.,AP-HP, Hopital Henri Mondor, Departement Immunologie-Hématologie, Creteil, France
| | - Valérie Molinier-Frenkel
- Univ Paris Est Creteil, INSERM, IMRB, Creteil, France.,AP-HP, Hopital Henri Mondor, Departement Immunologie-Hématologie, Creteil, France
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40
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Castro-Sanchez P, Teagle AR, Prade S, Zamoyska R. Modulation of TCR Signaling by Tyrosine Phosphatases: From Autoimmunity to Immunotherapy. Front Cell Dev Biol 2020; 8:608747. [PMID: 33425916 PMCID: PMC7793860 DOI: 10.3389/fcell.2020.608747] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 11/18/2020] [Indexed: 02/06/2023] Open
Abstract
Early TCR signaling is dependent on rapid phosphorylation and dephosphorylation of multiple signaling and adaptor proteins, leading to T cell activation. This process is tightly regulated by an intricate web of interactions between kinases and phosphatases. A number of tyrosine phosphatases have been shown to modulate T cell responses and thus alter T cell fate by negatively regulating early TCR signaling. Mutations in some of these enzymes are associated with enhanced predisposition to autoimmunity in humans, and mouse models deficient in orthologous genes often show T cell hyper-activation. Therefore, phosphatases are emerging as potential targets in situations where it is desirable to enhance T cell responses, such as immune responses to tumors. In this review, we summarize the current knowledge about tyrosine phosphatases that regulate early TCR signaling and discuss their involvement in autoimmunity and their potential as targets for tumor immunotherapy.
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Affiliation(s)
- Patricia Castro-Sanchez
- Ashworth Laboratories, Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Alexandra R Teagle
- Ashworth Laboratories, Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Sonja Prade
- Ashworth Laboratories, Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Rose Zamoyska
- Ashworth Laboratories, Institute of Immunology and Infection Research, University of Edinburgh, Edinburgh, United Kingdom
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41
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Kästle M, Merten C, Hartig R, Kaehne T, Liaunardy-Jopeace A, Woessner NM, Schamel WW, James J, Minguet S, Simeoni L, Schraven B. Tyrosine 192 within the SH2 domain of the Src-protein tyrosine kinase p56 Lck regulates T-cell activation independently of Lck/CD45 interactions. Cell Commun Signal 2020; 18:183. [PMID: 33225946 PMCID: PMC7682018 DOI: 10.1186/s12964-020-00673-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 10/13/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Upon engagement of the T-cell receptor (TCR), the Src-family protein tyrosine kinase p56Lck phosphorylates components of the TCR (e.g. the TCRζ chains), thereby initiating T-cell activation. The enzymatic activity of Lck is primarily regulated via reversible and dynamic phosphorylation of two tyrosine residues, Y394 and Y505. Lck possesses an additional highly conserved tyrosine Y192, located within the SH2 domain, whose role in T-cell activation is not fully understood. METHODS Knock-in mice expressing a phospho-mimetic (Y192E) form of Lck were generated. Cellular and biochemical characterization was performed to elucidate the function of Y192 in primary T cells. HEK 293T and Jurkat T cells were used for in vitro studies. RESULTS Co-immunoprecipitation studies and biochemical analyses using T cells from LckY192E knock-in mice revealed a diminished binding of LckY192E to CD45 and a concomitant hyperphosphorylation of Y505, thus corroborating previous data obtained in Jurkat T cells. Surprisingly however, in vitro kinase assays showed that LckY192E possesses a normal enzymatic activity in human and murine T cells. FLIM/FRET measurements employing an LckY192E biosensor further indicated that the steady state conformation of the LckY192E mutant is similar to Lckwt. These data suggest that Y192 might regulate Lck functions also independently from the Lck/CD45-association. Indeed, when LckY192E was expressed in CD45-/-/Csk-/- non-T cells (HEK 293T cells), phosphorylation of Y505 was similar to Lckwt, but LckY192E still failed to optimally phosphorylate and activate the Lck downstream substrate ZAP70. Furthermore, LckY19E was recruited less to CD3 after TCR stimulation. CONCLUSIONS Taken together, phosphorylation of Y192 regulates Lck functions in T cells at least twofold, by preventing Lck association to CD45 and by modulating ligand-induced recruitment of Lck to the TCR. MAJOR FINDINGS Our data change the current view on the function of Y192 and suggest that Y192 also regulates Lck activity in a manner independent of Y505 phosphorylation. Video Abstract.
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Affiliation(s)
- Matthias Kästle
- Institute of Molecular and Clinical Immunology, Medical Faculty, Otto-von-Guericke University, Leipziger Str.44, Building 26, 39120, Magdeburg, Germany.,Health Campus Immunology, Infectiology and Inflammation (GC-I3), Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Camilla Merten
- Institute of Molecular and Clinical Immunology, Medical Faculty, Otto-von-Guericke University, Leipziger Str.44, Building 26, 39120, Magdeburg, Germany.,Health Campus Immunology, Infectiology and Inflammation (GC-I3), Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Roland Hartig
- Institute of Molecular and Clinical Immunology, Medical Faculty, Otto-von-Guericke University, Leipziger Str.44, Building 26, 39120, Magdeburg, Germany.,Health Campus Immunology, Infectiology and Inflammation (GC-I3), Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Thilo Kaehne
- Institute of Experimental Internal Medicine, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | | | - Nadine M Woessner
- Spemann Graduate School of Biology and Medicine (SGBM), Albert-Ludwigs-University Freiburg, Freiburg, Germany.,Faculty of Biology, Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany.,Center of Chronic Immunodeficiency CCI, University Clinics and Medical Faculty, Freiburg, Germany
| | - Wolfgang W Schamel
- Faculty of Biology, Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany.,Center of Chronic Immunodeficiency CCI, University Clinics and Medical Faculty, Freiburg, Germany
| | - John James
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, MRC-LMB, Cambridge, UK.,Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Gibbet Hill, Coventry, UK
| | - Susana Minguet
- Faculty of Biology, Signalling Research Centres BIOSS and CIBSS, University of Freiburg, Freiburg, Germany.,Center of Chronic Immunodeficiency CCI, University Clinics and Medical Faculty, Freiburg, Germany
| | - Luca Simeoni
- Institute of Molecular and Clinical Immunology, Medical Faculty, Otto-von-Guericke University, Leipziger Str.44, Building 26, 39120, Magdeburg, Germany. .,Health Campus Immunology, Infectiology and Inflammation (GC-I3), Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany.
| | - Burkhart Schraven
- Institute of Molecular and Clinical Immunology, Medical Faculty, Otto-von-Guericke University, Leipziger Str.44, Building 26, 39120, Magdeburg, Germany. .,Health Campus Immunology, Infectiology and Inflammation (GC-I3), Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany.
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Matson CA, Choi S, Livak F, Zhao B, Mitra A, Love PE, Singh NJ. CD5 dynamically calibrates basal NF-κB signaling in T cells during thymic development and peripheral activation. Proc Natl Acad Sci U S A 2020; 117:14342-53. [PMID: 32513716 DOI: 10.1073/pnas.1922525117] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Immature T cells undergo a process of positive selection in the thymus when their new T cell receptor (TCR) engages and signals in response to self-peptides. As the T cell matures, a slew of negative regulatory molecules, including the inhibitory surface glycoprotein CD5, are up-regulated in proportion to the strength of the self-peptide signal. Together these regulators dampen TCR-proximal signaling and help avoid any subsequent peripheral activation of T cells by self-peptides. Paradoxically, antigen-specific T cells initially expressing more CD5 (CD5hi) have been found to better persist as effector/memory cells after a peripheral challenge. The molecular mechanisms underlying such a duality in CD5 function is not clear. We found that CD5 alters the basal activity of the NF-κB signaling in resting peripheral T cells. When CD5 was conditionally ablated, T cells were unable to maintain higher expression of the cytoplasmic NF-κB inhibitor IκBα. Consistent with this, resting CD5hi T cells expressed more of the NF-κB p65 protein than CD5lo cells, without significant increases in transcript levels, in the absence of TCR signals. This posttranslationally stabilized cellular NF-κB depot potentially confers a survival advantage to CD5hi T cells over CD5lo ones. Taken together, these data suggest a two-step model whereby the strength of self-peptide-induced TCR signal lead to the up-regulation of CD5, which subsequently maintains a proportional reserve of NF-κB in peripheral T cells poised for responding to agonistic antigen-driven T cell activation.
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Dunst J, Glaros V, Englmaier L, Sandoz PA, Önfelt B, Kisielow J, Kreslavsky T. Recognition of synthetic polyanionic ligands underlies "spontaneous" reactivity of Vγ1 γδTCRs. J Leukoc Biol 2020; 107:1033-1044. [PMID: 31943366 PMCID: PMC7317387 DOI: 10.1002/jlb.2ma1219-392r] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 12/05/2019] [Accepted: 12/11/2019] [Indexed: 01/02/2023] Open
Abstract
Although γδTCRs were discovered more than 30 yr ago, principles of antigen recognition by these receptors remain unclear and the nature of these antigens is largely elusive. Numerous studies reported that T cell hybridomas expressing several Vγ1-containing TCRs, including the Vγ1Vδ6 TCR of γδNKT cells, spontaneously secrete cytokines. This property was interpreted as recognition of a self-ligand expressed on the hybridoma cells themselves. Here, we revisited this finding using a recently developed reporter system and live single cell imaging. We confirmed strong spontaneous signaling by Vγ1Vδ6 and related TCRs, but not by TCRs from several other γδ or innate-like αβ T cells, and demonstrated that both γ and δ chains contributed to this reactivity. Unexpectedly, live single cell imaging showed that activation of this signaling did not require any interaction between cells. Further investigation revealed that the signaling is instead activated by interaction with negatively charged surfaces abundantly present under regular cell culture conditions and was abrogated when noncharged cell culture vessels were used. This mode of TCR signaling activation was not restricted to the reporter cell lines, as interaction with negatively charged surfaces also triggered TCR signaling in ex vivo Vγ1 γδ T cells. Taken together, these results explain long-standing observations on the spontaneous reactivity of Vγ1Vδ6 TCR and demonstrate an unexpected antigen presentation-independent mode of TCR activation by a spectrum of chemically unrelated polyanionic ligands.
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Affiliation(s)
- Josefine Dunst
- Department of Medicine, Division of Immunology and Allergy, Karolinska InstitutetKarolinska University HospitalStockholmSweden
- Center for Molecular MedicineKarolinska InstitutetStockholmSweden
| | - Vassilis Glaros
- Department of Medicine, Division of Immunology and Allergy, Karolinska InstitutetKarolinska University HospitalStockholmSweden
- Center for Molecular MedicineKarolinska InstitutetStockholmSweden
| | - Lukas Englmaier
- Department of Medicine, Division of Immunology and Allergy, Karolinska InstitutetKarolinska University HospitalStockholmSweden
- Center for Molecular MedicineKarolinska InstitutetStockholmSweden
| | - Patrick A. Sandoz
- Department of Applied PhysicsScience for Life LaboratoryKTH Royal Institute of TechnologyStockholmSweden
| | - Björn Önfelt
- Department of Applied PhysicsScience for Life LaboratoryKTH Royal Institute of TechnologyStockholmSweden
- Department of Microbiology, Tumor and Cell BiologyKarolinska InstituteSolnaSweden
| | - Jan Kisielow
- Institute of Molecular Health SciencesETHZurichSwitzerland
| | - Taras Kreslavsky
- Department of Medicine, Division of Immunology and Allergy, Karolinska InstitutetKarolinska University HospitalStockholmSweden
- Center for Molecular MedicineKarolinska InstitutetStockholmSweden
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44
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Matson CA, Singh NJ. Manipulating the TCR signaling network for cellular immunotherapy: Challenges & opportunities. Mol Immunol 2020; 123:64-73. [PMID: 32422416 DOI: 10.1016/j.molimm.2020.04.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 02/24/2020] [Accepted: 04/11/2020] [Indexed: 02/06/2023]
Abstract
T cells can help confer protective immunity by eliminating infections and tumors or drive immunopathology by damaging host cells. Both outcomes require a series of steps from the activation of naïve T cells to their clonal expansion, differentiation and migration to tissue sites. In addition to specific recognition of the antigen via the T cell receptor (TCR), multiple accessory signals from costimulatory molecules, cytokines and metabolites also influence each step along the progression of the T cell response. Current efforts to modify effector T cell function in many clinical contexts focus on the latter - which encompass antigen-independent and broad, contextual regulators. Not surprisingly, such approaches are often accompanied by adverse events, as they also affect T cells not relevant to the specific treatment. In contrast, fine tuning T cell responses by precisely targeting antigen-specific TCR signals has the potential to radically alter therapeutic strategies in a focused manner. Development of such approaches, however, requires a better understanding of functioning of the TCR and the biochemical signaling network coupled to it. In this article, we review some of the recent advances which highlight important roles of TCR signals throughout the activation and differentiation of T cells during an immune response. We discuss how, an appreciation of specific signaling modalities and variant ligands that influence the function of the TCR has the potential to influence design principles for the next generation of pharmacologic and cellular therapies, especially in the context of tumor immunotherapies involving adoptive cell transfers.
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Affiliation(s)
- Courtney A Matson
- Department of Microbiology & Immunology, University of Maryland School of Medicine, 685 W Baltimore St, HSF1, Room 380, Baltimore, MD 21201, United States
| | - Nevil J Singh
- Department of Microbiology & Immunology, University of Maryland School of Medicine, 685 W Baltimore St, HSF1, Room 380, Baltimore, MD 21201, United States.
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Ma Y, Lim YJ, Benda A, Lou J, Goyette J, Gaus K. Clustering of the ζ-Chain Can Initiate T Cell Receptor Signaling. Int J Mol Sci 2020; 21:ijms21103498. [PMID: 32429097 PMCID: PMC7279048 DOI: 10.3390/ijms21103498] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/11/2020] [Accepted: 05/13/2020] [Indexed: 11/16/2022] Open
Abstract
T cell activation is initiated when ligand binding to the T cell receptor (TCR) triggers intracellular phosphorylation of the TCR-CD3 complex. However, it remains unknown how biophysical properties of TCR engagement result in biochemical phosphorylation events. Here, we constructed an optogenetic tool that induces spatial clustering of ζ-chain in a light controlled manner. We showed that spatial clustering of the ζ-chain intracellular tail alone was sufficient to initialize T cell triggering including phosphorylation of ζ-chain, Zap70, PLCγ, ERK and initiated Ca2+ flux. In reconstituted COS-7 cells, only Lck expression was required to initiate ζ-chain phosphorylation upon ζ-chain clustering, which leads to the recruitment of tandem SH2 domain of Zap70 from cell cytosol to the newly formed ζ-chain clusters at the plasma membrane. Taken together, our data demonstrated the biophysical relevance of receptor clustering in TCR signaling.
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Affiliation(s)
- Yuanqing Ma
- EMBL Australia Node in Single Molecule Science, School of Medical Sciences, The University of New South Wales, 2052 Sydney, Australia; (J.L.); (J.G.)
- ARC Centre of Excellence in Advanced Molecular Imaging, The University of New South Wales, 2052 Sydney, Australia
- Correspondence: (Y.M.); (K.G.)
| | - Yean J. Lim
- ACRF Department of Cancer Biology and Therapeutics, The John Curtin School of Medical Research, The Australian National University, 131 Garran Road, 2601 Canberra, Australia;
- Research School of Electrical, Energy and Materials Engineering, College of Engineering and Computer Science, The Australian National University, 31 North Road, 2601 Canberra, Australia
| | - Aleš Benda
- IMCF at BIOCEV, Faculty of Science, Charles University, Průmyslová 595, 25250 Vestec, Czech Republic;
| | - Jieqiong Lou
- EMBL Australia Node in Single Molecule Science, School of Medical Sciences, The University of New South Wales, 2052 Sydney, Australia; (J.L.); (J.G.)
- ARC Centre of Excellence in Advanced Molecular Imaging, The University of New South Wales, 2052 Sydney, Australia
- School of Physics, University of Melbourne, Melbourne, VIC 3010, Australia
- Department of Biochemistry and Molecular Biology, Bio21 Institute, University of Melbourne, Melbourne, VIC 3010, Australia
| | - Jesse Goyette
- EMBL Australia Node in Single Molecule Science, School of Medical Sciences, The University of New South Wales, 2052 Sydney, Australia; (J.L.); (J.G.)
- ARC Centre of Excellence in Advanced Molecular Imaging, The University of New South Wales, 2052 Sydney, Australia
| | - Katharina Gaus
- EMBL Australia Node in Single Molecule Science, School of Medical Sciences, The University of New South Wales, 2052 Sydney, Australia; (J.L.); (J.G.)
- ARC Centre of Excellence in Advanced Molecular Imaging, The University of New South Wales, 2052 Sydney, Australia
- Correspondence: (Y.M.); (K.G.)
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Wang X, Xi D, Mo J, Wang K, Luo Y, Xia E, Huang R, Luo S, Wei J, Ren Z, Pang H, Yang R. Cordycepin exhibits a suppressive effect on T cells through inhibiting TCR signaling cascade in CFA-induced inflammation mice model. Immunopharmacol Immunotoxicol 2020; 42:119-127. [PMID: 32105161 DOI: 10.1080/08923973.2020.1728310] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Objective: Cordycepin has been shown to exhibit multiple pharmacological activities, such as antitumor, antifungi, antivirus, and immune-regulation activities, and is involved in the regulation of T cells. However, cordycepin that affects T cell activity is still not clear, and the molecular mechanism of cordycepin in regulation of TCR signaling has not yet been elucidated. In this study, the potential effect of cordycepin on T cells was observed in CFA-induced inflammation mice model, and the function of cordycepin in regulating TCR signaling cascade was investigated.Methods: A CFA-induced inflammation mice model was established for observing the effect of cordycepin on the thymus and spleen swellings, and T cell infiltration in paw tissue was detected by immunohistochemistry. The protein expression or phosphorilation was detected by western blotting, and the NFAT1 nuclear translocation was determined by fluorescence imaging. The cell proliferation, apoptosis, and IL-2 production were analyzed by CCK-8 method, flow cytometry, and ELISA.Results: In the mice model, the thymus and spleen swellings were suppressed and the T cell infiltration in paw tissue was inhibited by cordycepin at a concentration of 10 mg/kg. Although the expressions of ZAP70 and PLCγ1 were not significantly changed in the human T cell line Jurkat with cordycepin pretreatment, the CD3-antibody-induced phosphorylations of ZAP70 and PLCγ1 were markedly blocked. The protein level of p85 decreased when Jurkat cells were pretreated with cordycepin, and cordycepin blocked TCR downstream molecule Erk phosphorylation and NFAT1 nuclear translocation. Further investigation revealed that cordycepin inhibited T cell proliferation, reduced IL-2 production, and induced T cell apoptosis. Conclusions: These findings suggest that cordycepin regulates TCR signaling to inhibit excessive T cell activation in inflammation. Thus, cordycepin may be a potential therapeutic application in inflammation-associated diseases.
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Affiliation(s)
- Xiaoli Wang
- Department of Immunology, School of Preclinical Medicine, Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Deshuang Xi
- Department of Immunology, School of Preclinical Medicine, Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Jian Mo
- Department of Immunology, School of Preclinical Medicine, Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Ke Wang
- Department of Physiology, School of Preclinical Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Yu Luo
- Department of Clinical Laboratory, Peoples's Hospital of Guangxi Zhuang Autonomous Region, Nanning, People's Republic of China
| | - Erbin Xia
- Department of Immunology, School of Preclinical Medicine, Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Rong Huang
- Department of Immunology, School of Preclinical Medicine, Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Shunrong Luo
- Department of Immunology, School of Preclinical Medicine, Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Jiao Wei
- Department of Physiology, School of Preclinical Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Zhenghua Ren
- State Key Laboratory of Biocontrol, Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, Department of Biochemistry, National Engineering Research Center of South China Sea Marine Biotechnology, College of Life Sciences, Sun Yat-sen University, Guangzhou, People's Republic of China
| | - Hui Pang
- Department of Physiology, School of Preclinical Medicine, Guangxi Medical University, Nanning, People's Republic of China
| | - Rirong Yang
- Department of Immunology, School of Preclinical Medicine, Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, People's Republic of China
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Toshima K, Nagafuku M, Okazaki T, Kobayashi T, Inokuchi JI. Plasma membrane sphingomyelin modulates thymocyte development by inhibiting TCR-induced apoptosis. Int Immunol 2020; 31:211-223. [PMID: 30561621 DOI: 10.1093/intimm/dxy082] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/12/2019] [Indexed: 12/18/2022] Open
Abstract
Sphingomyelin (SM) in combination with cholesterol forms specialized membrane lipid microdomains in which specific receptors and signaling molecules are localized or recruited to mediate intracellular signaling. SM-microdomain levels in mouse thymus were low in the early CD4+CD8+ double-positive (DP) stage prior to thymic selection and increased >10-fold during late selection. T-cell receptor (TCR) signal strength is a key factor determining whether DP thymocytes undergo positive or negative selection. We examined the role of SM-microdomains in thymocyte development and related TCR signaling, using SM synthase 1 (SMS1)-deficient (SMS1-/-) mice which display low SM expression in all thymocyte populations. SMS1 deficiency caused reduced cell numbers after late DP stages in TCR transgenic models. TCR-dependent apoptosis induced by anti-CD3 treatment was enhanced in SMS1-/- DP thymocytes both in vivo and in vitro. SMS1-/- DP thymocytes, relative to controls, showed increased phosphorylation of TCR-proximal kinase ZAP-70 and increased expression of Bim and Nur77 proteins involved in negative selection following TCR stimulation. Addition of SM to cultured normal DP thymocytes led to greatly increased surface expression of SM-microdomains, with associated reduction of TCR signaling and TCR-induced apoptosis. Our findings indicate that SM-microdomains are increased in late DP stages, function as negative regulators of TCR signaling and modulate the efficiency of TCR-proximal signaling to promote thymic selection events leading to subsequent developmental stages.
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Affiliation(s)
- Kaoru Toshima
- Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Aoba-ku, Sendai, Miyagi, Japan
| | - Masakazu Nagafuku
- Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Aoba-ku, Sendai, Miyagi, Japan
| | - Toshiro Okazaki
- Department of Hematology and Immunology, Kanazawa Medical University, Uchinada, Ishikawa, Japan
| | | | - Jin-Ichi Inokuchi
- Division of Glycopathology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Aoba-ku, Sendai, Miyagi, Japan
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48
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Takeuchi Y, Hirota K, Sakaguchi S. Impaired T cell receptor signaling and development of T cell-mediated autoimmune arthritis. Immunol Rev 2020; 294:164-176. [PMID: 31944330 DOI: 10.1111/imr.12841] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 12/31/2019] [Indexed: 12/22/2022]
Abstract
Mutations of the genes encoding T-cell receptor (TCR)-proximal signaling molecules, such as ZAP-70, can be causative of immunological diseases ranging from T-cell immunodeficiency to T-cell-mediated autoimmune disease. For example, SKG mice, which carry a hypomorphic point mutation of the Zap-70 gene, spontaneously develop T-cell-mediated autoimmune arthritis immunopathologically similar to human rheumatoid arthritis (RA). The Zap-70 mutation alters the sensitivity of developing T cells to thymic positive/negative selection by self-peptides/MHC complexes, shifting self-reactive TCR repertoire to include a dominant arthritogenic specificity and also affecting thymic development and function of autoimmune suppressive regulatory T (Treg) cells. Polyclonal self-reactive T cells, including potentially arthritogenic T cells, thus produced by the thymus recognize self-peptide/MHC complexes on antigen-presenting cells (APCs) in the periphery and stimulate them to produce cytokines including IL-6 to drive the arthritogenic T cells to differentiate into arthritogenic T-helper 17 (Th17) cells. Insufficient Treg suppression or activation of APCs via microbial and other environmental stimuli evokes arthritis by activating granulocyte-macrophage colony-stimulating factor-secreting effector Th17 cells, mediating chronic bone-destructive joint inflammation by activating myeloid cells, innate lymphoid cells, and synoviocytes in the joint. These findings obtained from the study of SKG mouse arthritis are instrumental in understanding how arthritogenic T cells are produced, become activated, and differentiate into effector T cells mediating arthritis, and may help devising therapeutic measures targeting autoimmune pathogenic Th17 cells or autoimmune-suppressing Treg cells to treat and prevent RA.
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Affiliation(s)
- Yusuke Takeuchi
- Laboratory of Integrative Biological Science, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.,Department of Rheumatology and Clinical Immunology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Keiji Hirota
- Laboratory of Integrative Biological Science, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan.,Laboratory of Experimental Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Shimon Sakaguchi
- Laboratory of Experimental Immunology, Immunology Frontier Research Center, Osaka University, Osaka, Japan.,Laboratory of Experimental Immunology, Institute for Frontier Life and Medical Sciences, Kyoto University, Kyoto, Japan
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49
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Dimitriou ID, Lee K, Akpan I, Lind EF, Barr VA, Ohashi PS, Samelson LE, Rottapel R. Timed Regulation of 3BP2 Induction Is Critical for Sustaining CD8 + T Cell Expansion and Differentiation. Cell Rep 2019; 24:1123-1135. [PMID: 30067970 PMCID: PMC6701191 DOI: 10.1016/j.celrep.2018.06.075] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 04/17/2018] [Accepted: 06/18/2018] [Indexed: 12/28/2022] Open
Abstract
Successful anti-viral response requires the sustained activation and expansion of CD8+ T cells for periods that far exceed the time limit of physical T cell interaction with antigen-presenting cells (APCs). The expanding CD8+ T cell pool generates the effector and memory cell populations that provide viral clearance and long-term immunity, respectively. Here, we demonstrate that 3BP2 is recruited in cytoplasmic microclusters and nucleates a signaling complex that facilitates MHC:peptide-independent activation of signaling pathways downstream of the TCR. We show that induction of the adaptor molecule 3BP2 is a sensor of TCR signal strength and is critical for sustaining CD8+ T cell proliferation and regulating effector and memory differentiation. Dimitriou et al. show that the adaptor protein 3BP2 lowers the threshold of T cell activation and that the induction of the 3BP2 signaling module at later time points may serve to recapitulate and prolong the biochemical signals emanating from the TCR required for sustained MHC:peptide-independent T cell proliferation.
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Affiliation(s)
- Ioannis D Dimitriou
- Princess Margaret Cancer Center, Toronto Medical Discovery Tower, Toronto, ON M5G 1L7, Canada
| | - Korris Lee
- Princess Margaret Cancer Center, Toronto Medical Discovery Tower, Toronto, ON M5G 1L7, Canada
| | - Itoro Akpan
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research (CCR), National Cancer Institute (NCI), NIH, Bethesda, MD 20892, USA
| | - Evan F Lind
- Department of Molecular Microbiology & Immunology, Oregon Health & Science University, Portland, OR 97239, USA
| | - Valarie A Barr
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research (CCR), National Cancer Institute (NCI), NIH, Bethesda, MD 20892, USA
| | - Pamela S Ohashi
- Campbell Family Institute for Breast Cancer Research, Princess Margaret Cancer Centre, Toronto, ON M5G 2C1, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5S 1L7, Canada; Department of Immunology, University of Toronto, Toronto, ON M5S 1L7, Canada
| | - Lawrence E Samelson
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research (CCR), National Cancer Institute (NCI), NIH, Bethesda, MD 20892, USA
| | - Robert Rottapel
- Princess Margaret Cancer Center, Toronto Medical Discovery Tower, Toronto, ON M5G 1L7, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5S 1L7, Canada; Department of Immunology, University of Toronto, Toronto, ON M5S 1L7, Canada; Department of Medicine, University of Toronto, Toronto, ON M5S 1L7, Canada.
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50
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Kruglova N, Filatov A. T cell receptor signaling results in ERK-dependent Ser163 phosphorylation of lymphocyte phosphatase-associated phosphoprotein. Biochem Biophys Res Commun 2019; 519:559-65. [PMID: 31537385 DOI: 10.1016/j.bbrc.2019.09.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 09/11/2019] [Indexed: 11/22/2022]
Abstract
Lymphocyte phosphatase-associated phosphoprotein (LPAP) is a transmembrane protein tightly associated with the phosphatase CD45, which regulates antigen specific lymphocyte activation. Although LPAP is positioned in close proximity to key signaling molecules, its function remains unknown. In this study, we investigated signaling pathways involved in LPAP phosphorylation. Using phosphospecific antibodies generated in our laboratory, we analyzed changes in LPAP phosphorylation in response to various stimuli. Cross-linking with antibodies against TCR or BCR, as well as ionophores and Thapsigargin, resulted in rapid dephosphorylation at Ser172 and Ser99 followed by phosphorylation at Ser163. A panel of inhibitors allowed us to show that PMA and TCR cross-linkage engages the MEK-ERK pathway to drive phosphorylation of LPAP at Ser163. The ERK1/2 kinase was the most distal element in the cascade, which when inhibited prevented changes in LPAP phosphorylation. Supporting this, we found that ERK1 is capable of phosphorylating LPAP at Ser163 in vitro. Although the functional role of this event is yet to be revealed, we provide evidence for a new ERK1/2 target in lymphocytes, namely LPAP, representing a potential regulatory mechanism in the signaling cascade.
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