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Li D, Cho MS, Gonzalez‐Delgado R, Liang X, Dong J, Cruz MA, Ma Q, Afshar‐Kharghan V. The effect of ADAMTS13 on graft-versus-host disease. J Cell Mol Med 2024; 28:e18457. [PMID: 38963011 PMCID: PMC11222974 DOI: 10.1111/jcmm.18457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 05/08/2024] [Accepted: 05/16/2024] [Indexed: 07/05/2024] Open
Abstract
Allogeneic haematopoietic stem cell transplantation (allo-HSCT) can potentially cure malignant blood disorders and benign conditions such as haemoglobinopathies and immunologic diseases. However, allo-HSCT is associated with significant complications. The most common and debilitating among them is graft-versus-host disease (GVHD). In GVHD, donor-derived T cells mount an alloimmune response against the recipient. The alloimmune response involves several steps, including recognition of recipient antigens, activation and proliferation of T cells in secondary lymphoid organs, and homing into GVHD-targeted organs. Adhesion molecules on T cells and endothelial cells mediate homing of T cells into lymphoid and non-lymphoid tissues. In this study, we showed that Von Willebrand factor (VWF), an adhesion molecule secreted by activated endothelial cells, plays an important role in mouse models of GVHD. We investigated the effect of the VWF-cleaving protease ADAMTS13 on GVHD. We found that ADAMTS13 reduced the severity of GVHD after bone marrow transplantation from C57BL6 donor to BALB/C recipient mice. A recombinant VWF-A2 domain peptide also reduced GVHD in mice. We showed that ADAMTS13 and recombinant VWF-A2 reduced the binding of T cells to endothelial cells and VWF in vitro, and reduced the number of T cells in lymph nodes, Peyer's patches and GVHD-targeted organs in vivo. We identified LFA-1 (αLβ2) as the binding site of VWF on T cells. Our results showed that blocking T-cell homing by ADAMTS13 or VWF-A2 peptide reduced the severity of the GVHD after allo-HSCT, a potentially novel method for treating and preventing GVHD.
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Affiliation(s)
- Dan Li
- Department of Hematopoietic Biology & MalignancyThe University of Texas MD Anderson Cancer CenterHoustonTexasUSA
| | - Min Soon Cho
- Section of Benign HematologyThe University of Texas MD Anderson Cancer CenterHoustonTexasUSA
| | | | - Xiaowen Liang
- Department of Integrative Biology and PharmacologyMcGovern Medical School, The University of Texas Health Science CenterHoustonTexasUSA
| | - Jing‐Fei Dong
- Bloodworks Research Institute and Hematology Division, Department of MedicineUniversity of Washington School of MedicineSeattleWashingtonUSA
| | - Miguel A. Cruz
- Center for Translational Research on Inflammatory Diseases (CTRID), Michael E. DeBakey VA Medical CenterHoustonTexasUSA
- Baylor College of MedicineHoustonTexasUSA
- Department of MedicineBaylor College of MedicineHoustonTexasUSA
| | - Qing Ma
- Department of Hematopoietic Biology & MalignancyThe University of Texas MD Anderson Cancer CenterHoustonTexasUSA
| | - Vahid Afshar‐Kharghan
- Section of Benign HematologyThe University of Texas MD Anderson Cancer CenterHoustonTexasUSA
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2
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Zhou L, Velegraki M, Wang Y, Mandula JK, Chang Y, Liu W, Song NJ, Kwon H, Xiao T, Bolyard C, Hong F, Xin G, Ma Q, Rubinstein MP, Wen H, Li Z. Spatial and functional targeting of intratumoral Tregs reverses CD8+ T cell exhaustion and promotes cancer immunotherapy. J Clin Invest 2024; 134:e180080. [PMID: 38787791 PMCID: PMC11245154 DOI: 10.1172/jci180080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 05/17/2024] [Indexed: 05/26/2024] Open
Abstract
Intratumoral Tregs are key mediators of cancer immunotherapy resistance, including anti-programmed cell death (ligand) 1 [anti-PD-(L)1] immune checkpoint blockade (ICB). The mechanisms driving Treg infiltration into the tumor microenvironment (TME) and the consequence on CD8+ T cell exhaustion remain elusive. Here, we report that heat shock protein gp96 (also known as GRP94) was indispensable for Treg tumor infiltration, primarily through the roles of gp96 in chaperoning integrins. Among various gp96-dependent integrins, we found that only LFA-1 (αL integrin), and not αV, CD103 (αE), or β7 integrin, was required for Treg tumor homing. Loss of Treg infiltration into the TME by genetic deletion of gp96/LFA-1 potently induced rejection of tumors in multiple ICB-resistant murine cancer models in a CD8+ T cell-dependent manner, without loss of self-tolerance. Moreover, gp96 deletion impeded Treg activation primarily by suppressing IL-2/STAT5 signaling, which also contributed to tumor regression. By competing for intratumoral IL-2, Tregs prevented the activation of CD8+ tumor-infiltrating lymphocytes, drove thymocyte selection-associated high mobility group box protein (TOX) induction, and induced bona fide CD8+ T cell exhaustion. By contrast, Treg ablation led to striking CD8+ T cell activation without TOX induction, demonstrating clear uncoupling of the 2 processes. Our study reveals that the gp96/LFA-1 axis plays a fundamental role in Treg biology and suggests that Treg-specific gp96/LFA-1 targeting represents a valuable strategy for cancer immunotherapy without inflicting autoinflammatory conditions.
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Affiliation(s)
- Lei Zhou
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Department of Anesthesiology, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Maria Velegraki
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
| | - Yi Wang
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Molecular, Cellular and Developmental Biology Graduate Program, Ohio State University, Columbus, Ohio, USA
| | - J K Mandula
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
| | - Yuzhou Chang
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Department of Biomedical Informatics
| | - Weiwei Liu
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Molecular, Cellular and Developmental Biology Graduate Program, Ohio State University, Columbus, Ohio, USA
| | - No-Joon Song
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
| | - Hyunwoo Kwon
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Department of Internal Medicine, Ohio State University College of Medicine, Columbus, USA
| | - Tong Xiao
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Molecular, Cellular and Developmental Biology Graduate Program, Ohio State University, Columbus, Ohio, USA
| | - Chelsea Bolyard
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
| | - Feng Hong
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Gang Xin
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Department of Microbial Infection and Immunity, Ohio State University College of Medicine, Columbus, USA
| | - Qin Ma
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Department of Biomedical Informatics
| | - Mark P. Rubinstein
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus, USA
| | - Haitao Wen
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Department of Microbial Infection and Immunity, Ohio State University College of Medicine, Columbus, USA
| | - Zihai Li
- Pelotonia Institute for Immuno-Oncology (PIIO), The Ohio State University Comprehensive Cancer Center – James Cancer Hospital and Solove Research Institute (OSUCCC), Columbus, Ohio, USA
- Division of Medical Oncology, Department of Internal Medicine, Ohio State University Comprehensive Cancer Center, Columbus, USA
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Afsharnoori F, Forouzandeh Moghadam M. Isolation and characterization of a novel single-chain variable fragment (scFv) against Lymphocyte function-associated antigen-1 (LFA-1) using phage display method. Med Oncol 2023; 41:15. [PMID: 38078968 DOI: 10.1007/s12032-023-02242-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 11/07/2023] [Indexed: 12/18/2023]
Abstract
Lymphocyte function-associated antigene-1 (LFA-1) is a well-described integrin found on lymphocytes and other leukocytes, which is known to be overexpressed in leukemias and lymphomas. This receptor plays a significant role in immune responses such as T-cell activation, leukocyte cell-cell interactions, and trafficking of leukocyte populations. Subsequently, binders of LFA-1 emerge as potential candidates for cancer and autoimmune therapy. This study used the phage display technique to construct and characterize a high-affinity single-chain fragment variable (scFv) antibody against LFA-1. After expression, purification, dialysis, and concentration of the recombinant LFA-1 protein, four female BALB/c mice were immunized, splenocyte's mRNA was extracted, and cDNA was synthesized. A scFv library was constructed by linking the amplified VH/Vκ fragments through a 72-bp linker using SOEing PCR. Next, the scFv gene fragments were cloned into the pComb-3XSS phagemid vector; thus, the phage library was developed. The selection process involved three rounds of phage-bio-panning, polyclonal, and monoclonal phage ELISA. AF17 was chosen and characterized among the positive clones through SDS-PAGE, Western blotting, indirect ELISA, and in-silico analyses. The results of the study showed the successful construction of a high-affinity scFv library against LFA-1. The accuracy of the AF17 production and its ability to bind to the LFA-1 were confirmed through SDS-PAGE, Western blot, and ELISA. This study highlights the potential application of the high-affinity AF17 against LFA-1 for targeting T lymphocytes for therapeutic purposes.
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Affiliation(s)
- Fatemeh Afsharnoori
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, P.O. Box 14115-111, Tehran, Iran
| | - Mehdi Forouzandeh Moghadam
- Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, P.O. Box 14115-111, Tehran, Iran.
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Feng Z, Li M, Ma A, Wei Y, Huang L, Kong L, Kang Y, Wang Z, Xiao F, Zhang W. Intermedin (adrenomedullin 2) plays a protective role in sepsis by regulating T- and B-cell proliferation and activity. Int Immunopharmacol 2023; 121:110488. [PMID: 37352568 DOI: 10.1016/j.intimp.2023.110488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/24/2023] [Accepted: 06/09/2023] [Indexed: 06/25/2023]
Abstract
BACKGROUND Sepsis is the major cause of death in intensive care units. We previously found that intermedin (IMD), a calcitonin family peptide, can protect against sepsis by dynamically repairing vascular endothelial junctions and can ameliorate the inflammatory response by inhibiting the infiltration of macrophages in peripheral tissues. The effects of IMD on inflammatory and immune responses indicate that IMD may play a role in immunity. However, whether IMD affects immune cell development, differentiation and response to infection remains unclear. METHODS IMD-knockout (Adm2-/-) mice were generated in our previous work. Wild-type and IMD-KO mice were subjected to sham or cecal ligation and puncture (CLP) surgery, and bone marrow cells were obtained for RNA sequencing (RNA-Seq) analysis. The RNA-Seq results were verified by real-time RT-PCR. The effect of IMD KO or IMD rescue on the septic mice was explored using mild and severe infection models induced by CLP surgery at different levels of severity, and the survival outcomes were analyzed using Kaplan-Meier curves and the log-rank test. The mechanism underlying the effects of IMD in T/B cell proliferation and differentiation were investigated by PCR, Western blot (WB), and cell proliferation assays and flow cytometry analysis. RESULTS RNA-Seq showed that IMD-KO mice exhibited a primary immunosuppression phenotype characterized by a marked decrease in the expression of T- and B-cell function-related genes. This immunosuppression made the IMD-KO mice vulnerable to pathogenic invasion, and even mild infection killed nearly half of the IMD-KO mice. Supplementation with the IMD peptide restored the expression of T/B-cell-related genes and significantly reduced the mortality rate of the IMD-KO mice. IMD is likely to directly promote T- and B-cell proliferation through ERK1/2 phosphorylation, stimulate T-cell differentiation via Ilr7/Rag1/2-controled T cell receptor (TCR) recombination, and activate B cells via Pax5, a transcription factor that activates at least 170 genes needed for B-cell functions. CONCLUSION Together with previous findings, our results indicate that IMD may play a protective role in sepsis via three mechanisms: protecting the vascular endothelium, reducing the inflammatory response, and activating T/B-cell proliferation and differentiation. Our study may provide the first identification of IMD as a calcitonin peptide that plays an important role in the adaptive immune response by activating T/B cells and provides translational opportunities for the design of immunotherapies for sepsis and other diseases associated with primary immunodeficiency.
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Affiliation(s)
- Zhongxue Feng
- Department of Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, China
| | - Min Li
- Department of Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, China
| | - Aijia Ma
- Department of Critical Care Medicine, West China Hospital, Sichuan University, China
| | - Yong'gang Wei
- Department of Intensive Care Unit of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, China
| | - Luping Huang
- Department of Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, China
| | - Lingmiao Kong
- Department of Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, China
| | - Yan Kang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, China
| | - Zhenling Wang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center of Biotherapy, China
| | - Fei Xiao
- Department of Intensive Care Unit of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, China.
| | - Wei Zhang
- Department of Critical Care Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, China.
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5
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Zhao L, Zhao G, Feng J, Zhang Z, Zhang J, Guo H, Lin M. T Cell engineering for cancer immunotherapy by manipulating mechanosensitive force-bearing receptors. Front Bioeng Biotechnol 2023; 11:1220074. [PMID: 37560540 PMCID: PMC10407658 DOI: 10.3389/fbioe.2023.1220074] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/13/2023] [Indexed: 08/11/2023] Open
Abstract
T cell immune responses are critical for in both physiological and pathological processes. While biochemical cues are important, mechanical cues arising from the microenvironment have also been found to act a significant role in regulating various T cell immune responses, including activation, cytokine production, metabolism, proliferation, and migration. The immune synapse contains force-sensitive receptors that convert these mechanical cues into biochemical signals. This phenomenon is accepted in the emerging research field of immunomechanobiology. In this review, we provide insights into immunomechanobiology, with a specific focus on how mechanosensitive receptors are bound and triggered, and ultimately resulting T cell immune responses.
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Affiliation(s)
- Lingzhu Zhao
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, China
| | - Guoqing Zhao
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, China
| | - Jinteng Feng
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, China
- Department of Thoracic Surgery, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Zheng Zhang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, China
| | - Jiayu Zhang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, China
| | - Hui Guo
- Department of Medical Oncology, First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Min Lin
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi’an Jiaotong University, Xi’an, China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi’an Jiaotong University, Xi’an, China
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6
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Hibino S, Eto S, Hangai S, Endo K, Ashitani S, Sugaya M, Osawa T, Soga T, Taniguchi T, Yanai H. Tumor cell-derived spermidine is an oncometabolite that suppresses TCR clustering for intratumoral CD8 + T cell activation. Proc Natl Acad Sci U S A 2023; 120:e2305245120. [PMID: 37276392 PMCID: PMC10268234 DOI: 10.1073/pnas.2305245120] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 05/03/2023] [Indexed: 06/07/2023] Open
Abstract
The activation and expansion of T cells that recognize cancer cells is an essential aspect to antitumor immunity. Tumors may escape destruction by the immune system through ectopic expression of inhibitory immune ligands typically exemplified by the PD-L1/PD-1 pathway. Here, we reveal another facet of tumor evasion from T cell surveillance. By secretome profiling of necrotic tumor cells, we identified an oncometabolite spermidine as a unique inhibitor of T cell receptor (TCR) signaling. Mechanistically, spermidine causes the downregulation of the plasma membrane cholesterol levels, resulting in the suppression of TCR clustering. Using syngeneic mouse models, we show that spermidine is abundantly detected in the tumor immune microenvironment (TIME) and that administration of the polyamine synthesis inhibitor effectively enhanced CD8+ T cell-dependent antitumor responses. Further, the combination of the polyamine synthesis inhibitor with anti-PD-1 immune checkpoint antibody resulted in a much stronger antitumor immune response. This study reveals an aspect of immunosuppressive TIME, wherein spermidine functions as a metabolic T cell checkpoint that may offer a unique approach for promoting tumor immunotherapy.
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Affiliation(s)
- Sana Hibino
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
| | - Shotaro Eto
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
| | - Sho Hangai
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
| | - Keiko Endo
- Institute for Advanced Biosciences, Keio University, Yamagata997-0052, Japan
| | - Sanae Ashitani
- Institute for Advanced Biosciences, Keio University, Yamagata997-0052, Japan
| | - Maki Sugaya
- Division of Nutriomics and Oncology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-8904, Japan
| | - Tsuyoshi Osawa
- Division of Nutriomics and Oncology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-8904, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata997-0052, Japan
| | - Tadatsugu Taniguchi
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
| | - Hideyuki Yanai
- Department of Inflammology, Research Center for Advanced Science and Technology, The University of Tokyo, Meguro-ku, Tokyo153-0041, Japan
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7
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Shi H, Shao B. LFA-1 Activation in T-Cell Migration and Immunological Synapse Formation. Cells 2023; 12:cells12081136. [PMID: 37190045 DOI: 10.3390/cells12081136] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 04/02/2023] [Accepted: 04/06/2023] [Indexed: 05/17/2023] Open
Abstract
Integrin LFA-1 plays a critical role in T-cell migration and in the formation of immunological synapses. LFA-1 functions through interacting with its ligands with differing affinities: low, intermediate, and high. Most prior research has studied how LFA-1 in the high-affinity state regulates the trafficking and functions of T cells. LFA-1 is also presented in the intermediate-affinity state on T cells, however, the signaling to activate LFA-1 to the intermediate-affinity state and the role of LFA-1 in this affinity state both remain largely elusive. This review briefly summarizes the activation and roles of LFA-1 with varied ligand-binding affinities in the regulation of T-cell migration and immunological synapse formation.
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Affiliation(s)
- Huiping Shi
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Bojing Shao
- Cardiovascular Biology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
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8
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Shen F, Liu J, Fang L, Fang Y, Zhou H. Development and application of animal models to study thyroid-associated ophthalmopathy. Exp Eye Res 2023; 230:109436. [PMID: 36914000 DOI: 10.1016/j.exer.2023.109436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 02/08/2023] [Accepted: 03/08/2023] [Indexed: 03/13/2023]
Abstract
Thyroid-associated ophthalmopathy (TAO), also known as Graves' ophthalmopathy, is an autoimmune disease that is usually accompanied by hyperthyroidism. Its pathogenesis involves the activation of autoimmune T lymphocytes by a cross-antigen reaction of thyroid and orbital tissues. The thyroid-stimulating hormone receptor (TSHR) is known to play an important role in the development of TAO. Because of the difficulty of orbital tissue biopsy, the establishment of an ideal animal model is important for developing novel clinical therapies of TAO. To date, TAO animal modeling methods are mainly based on inducing experimental animals to produce anti-thyroid-stimulating hormone receptor antibodies (TRAbs) and then recruit autoimmune T lymphocytes. Currently, the most common methods are hTSHR-A subunit plasmid electroporation and hTSHR-A subunit adenovirus transfection. These animal models provide a powerful tool for exploring the internal relationship between local and systemic immune microenvironment disorders of the TAO orbit, facilitating the development of new drugs. However, existing TAO modeling methods still have some defects, such as low modeling rate, long modeling cycles, low repetition rate, and considerable differences from human histology. Hence, the modeling methods require further innovation, improvement, and in-depth exploration.
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Affiliation(s)
- Feiyang Shen
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, China.
| | - Jin Liu
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, China
| | - Lianfei Fang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, China.
| | - Yan Fang
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, China.
| | - Huifang Zhou
- Department of Ophthalmology, Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025, China.
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9
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Shen F, Fang Y, Wu Y, Zhou M, Shen J, Fan X. Metal ions and nanometallic materials in antitumor immunity: Function, application, and perspective. J Nanobiotechnology 2023; 21:20. [PMID: 36658649 PMCID: PMC9850565 DOI: 10.1186/s12951-023-01771-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 01/05/2023] [Indexed: 01/20/2023] Open
Abstract
The slightest change in the extra/intracellular concentration of metal ions results in amplified effects by signaling cascades that regulate both cell fate within the tumor microenvironment and immune status, which influences the network of antitumor immunity through various pathways. Based on the fact that metal ions influence the fate of cancer cells and participate in both innate and adaptive immunity, they are widely applied in antitumor therapy as immune modulators. Moreover, nanomedicine possesses the advantage of precise delivery and responsive release, which can perfectly remedy the drawbacks of metal ions, such as low target selectivity and systematic toxicity, thus providing an ideal platform for metal ion application in cancer treatment. Emerging evidence has shown that immunotherapy applied with nanometallic materials may significantly enhance therapeutic efficacy. Here, we focus on the physiopathology of metal ions in tumorigenesis and discuss several breakthroughs regarding the use of nanometallic materials in antitumor immunotherapeutics. These findings demonstrate the prominence of metal ion-based nanomedicine in cancer therapy and prophylaxis, providing many new ideas for basic immunity research and clinical application. Consequently, we provide innovative insights into the comprehensive understanding of the application of metal ions combined with nanomedicine in cancer immunotherapy in the past few years.
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Affiliation(s)
- Feiyang Shen
- grid.16821.3c0000 0004 0368 8293Department of Ophthalmology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 China ,grid.16821.3c0000 0004 0368 8293Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025 China
| | - Yan Fang
- grid.16821.3c0000 0004 0368 8293Department of Ophthalmology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 China ,grid.16821.3c0000 0004 0368 8293Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025 China
| | - Yijia Wu
- grid.16821.3c0000 0004 0368 8293Department of Ophthalmology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 China ,grid.16821.3c0000 0004 0368 8293Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025 China
| | - Min Zhou
- grid.16821.3c0000 0004 0368 8293Department of Ophthalmology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 China ,grid.16821.3c0000 0004 0368 8293Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025 China
| | - Jianfeng Shen
- grid.16821.3c0000 0004 0368 8293Department of Ophthalmology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 China ,grid.16821.3c0000 0004 0368 8293Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025 China ,grid.16821.3c0000 0004 0368 8293Institute of Translational Medicine, National Facility for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240 China
| | - Xianqun Fan
- grid.16821.3c0000 0004 0368 8293Department of Ophthalmology, Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025 China ,grid.16821.3c0000 0004 0368 8293Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, 200025 China ,grid.16821.3c0000 0004 0368 8293Institute of Translational Medicine, National Facility for Translational Medicine, Shanghai Jiao Tong University, Shanghai, 200240 China
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10
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Abstract
Immune responses are governed by signals from the tissue microenvironment, and in addition to biochemical signals, mechanical cues and forces arising from the tissue, its extracellular matrix and its constituent cells shape immune cell function. Indeed, changes in biophysical properties of tissue alter the mechanical signals experienced by cells in many disease conditions, in inflammatory states and in the context of ageing. These mechanical cues are converted into biochemical signals through the process of mechanotransduction, and multiple pathways of mechanotransduction have been identified in immune cells. Such pathways impact important cellular functions including cell activation, cytokine production, metabolism, proliferation and trafficking. Changes in tissue mechanics may also represent a new form of 'danger signal' that alerts the innate and adaptive immune systems to the possibility of injury or infection. Tissue mechanics can change temporally during an infection or inflammatory response, offering a novel layer of dynamic immune regulation. Here, we review the emerging field of mechanoimmunology, focusing on how mechanical cues at the scale of the tissue environment regulate immune cell behaviours to initiate, propagate and resolve the immune response.
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11
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Shan Z, Xie X, Wu X, Zhuang S, Zhang C. Development of degradable magnesium-based metal implants and their function in promoting bone metabolism (A review). J Orthop Translat 2022; 36:184-193. [PMID: 36263386 PMCID: PMC9552026 DOI: 10.1016/j.jot.2022.09.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 09/05/2022] [Accepted: 09/26/2022] [Indexed: 11/06/2022] Open
Abstract
Background Use of degradable magnesium (Mg)-based metal implants in orthopaedic surgeries can avoid drawbacks associated with subsequent removal of the non-degradable metallic implants, reducing cost and trauma of patients. Although Mg has been applied in the clinic for orthopaedic treatment, the use of Mg-based metal implants is largely in the research phase. But its application is potentially beneficial in this context as it has been shown that Mg can promote osteogenesis and inhibit osteoclast activity. Methods A systematic literature search about “degradable magnesium (Mg)-based metal implants” was performed in PubMed and Web of Science. Meanwhile, relevant findings have been reviewed and quoted. Results In this review, we summarize the latest developments in Mg-based metal implants and their role in bone regeneration. We also review the various molecular mechanisms by which Mg ions regulate bone metabolic processes, including osteogenesis, osteoclast activity, angiogenesis, immunity, and neurology. Finally, we discuss the remaining research challenges and opportunities for Mg-based implants and their applications. Conclusion Currently, establishment of the in vitro and in vivo biological evaluation systems and phenotypic modification improvement of Mg-based implants are still needed. Clarifying the functions of Mg-based metal implants in promoting bone metabolism is beneficial for their clinical application. The Translational potential of this article All current reviews on Mg-based implants are mainly concerned with the improvement of Mg alloy properties or the progress of applications. However, there are few reviews that provides a systematic narrative on the effect of Mg on bone metabolism. This review summarized the latest developments in Mg-based metal implants and various molecular mechanisms of Mg ions regulating bone metabolism, which is beneficial to further promote the translation of Mg based implants in the clinic and is able to provide a strong basis for the clinical application of Mg based implants.
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Affiliation(s)
- Zhengming Shan
- School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
| | - Xinhui Xie
- School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- The Department of Orthopaedics, ZhongDa Hospital, Nanjing, Jiangsu, 210009, China
- Corresponding author. The Department of Orthopaedics, ZhongDa hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China.
| | - Xiaotao Wu
- School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- The Department of Orthopaedics, ZhongDa Hospital, Nanjing, Jiangsu, 210009, China
- Corresponding author. The Department of Orthopaedics, ZhongDa hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China.
| | - Suyang Zhuang
- School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- The Department of Orthopaedics, ZhongDa Hospital, Nanjing, Jiangsu, 210009, China
| | - Cong Zhang
- School of Medicine, Southeast University, Nanjing, Jiangsu, 210009, China
- The Department of Orthopaedics, ZhongDa Hospital, Nanjing, Jiangsu, 210009, China
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12
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Cai X, Li H, Wang M, Chu E, Wei N, Lin J, Hu Y, Dai J, Chen A, Zheng H, Zhang Q, Zhong Y, Chang R, Wu S, Xiao Y, Liu C. mTOR Participates in the Formation, Maintenance, and Function of Memory CD8 +T Cells Regulated by Glycometabolism. Biochem Pharmacol 2022; 204:115197. [PMID: 35926651 DOI: 10.1016/j.bcp.2022.115197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/21/2022] [Accepted: 07/27/2022] [Indexed: 11/02/2022]
Abstract
Memory CD8+T cells participate in the fight against infection and tumorigenesis as well as in autoimmune disease progression because of their efficient and rapid immune response, long-term survival, and continuous differentiation. At each stage of their formation, maintenance, and function, the cell metabolism must be adjusted to match the functional requirements of the specific stage. Notably, enhanced glycolytic metabolism can generate sufficient levels of adenosine triphosphate (ATP) to form memory CD8+T cells, countering the view that glycolysis prevents the formation of memory CD8+T cells. This review focuses on how glycometabolism regulates memory CD8+T cells and highlights the key mechanisms through which the mammalian target of rapamycin (mTOR) signaling pathway affects memory CD8+T cell formation, maintenance, and function by regulating glycometabolism. In addition, different subpopulations of memory CD8+T cells exhibit different metabolic flexibility during their formation, survival, and functional stages, during which the energy metabolism may be critical. These findings which may explain why enhanced glycolytic metabolism can give rise to memory CD8+T cells. Modulating the metabolism of memory CD8+T cells to influence specific cell fates may be useful for disease treatment.
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Affiliation(s)
- Xuepei Cai
- Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Haokun Li
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Manyi Wang
- Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Edward Chu
- Department of Oncology and Cancer Therapeutics Program, Albert Einstein Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ning Wei
- Department of Oncology and Cancer Therapeutics Program, Albert Einstein Cancer Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Jiayu Lin
- Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Yun Hu
- Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Jingtao Dai
- Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Aijie Chen
- Stomatological Hospital, Southern Medical University, Guangzhou, China
| | - Hua Zheng
- Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Qianbing Zhang
- Cancer Research Institute, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Yuxia Zhong
- Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Ruoshui Chang
- Department of Immunology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Sha Wu
- Department of Immunology, School of Basic Medical Sciences, Microbiome Medicine Center, Department of Laboratory Medicine, Zhujiang Hospital, Southern Medical University, Guangzhou, China; Key Laboratory of Functional Proteomics of Guangdong Province, Guangzhou, China; National Demonstration Center for Experimental Education of Basic Medical Sciences of China, Guangzhou, China.
| | - Yaomu Xiao
- Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China.
| | - Chufeng Liu
- Department of Orthodontics, Stomatological Hospital, Southern Medical University, Guangzhou, China.
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13
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Lötscher J, Martí I Líndez AA, Kirchhammer N, Cribioli E, Giordano Attianese GMP, Trefny MP, Lenz M, Rothschild SI, Strati P, Künzli M, Lotter C, Schenk SH, Dehio P, Löliger J, Litzler L, Schreiner D, Koch V, Page N, Lee D, Grählert J, Kuzmin D, Burgener AV, Merkler D, Pless M, Balmer ML, Reith W, Huwyler J, Irving M, King CG, Zippelius A, Hess C. Magnesium sensing via LFA-1 regulates CD8 + T cell effector function. Cell 2022; 185:585-602.e29. [PMID: 35051368 DOI: 10.1016/j.cell.2021.12.039] [Citation(s) in RCA: 74] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 11/15/2021] [Accepted: 12/22/2021] [Indexed: 12/13/2022]
Abstract
The relevance of extracellular magnesium in cellular immunity remains largely unknown. Here, we show that the co-stimulatory cell-surface molecule LFA-1 requires magnesium to adopt its active conformation on CD8+ T cells, thereby augmenting calcium flux, signal transduction, metabolic reprogramming, immune synapse formation, and, as a consequence, specific cytotoxicity. Accordingly, magnesium-sufficiency sensed via LFA-1 translated to the superior performance of pathogen- and tumor-specific T cells, enhanced effectiveness of bi-specific T cell engaging antibodies, and improved CAR T cell function. Clinically, low serum magnesium levels were associated with more rapid disease progression and shorter overall survival in CAR T cell and immune checkpoint antibody-treated patients. LFA-1 thus directly incorporates information on the composition of the microenvironment as a determinant of outside-in signaling activity. These findings conceptually link co-stimulation and nutrient sensing and point to the magnesium-LFA-1 axis as a therapeutically amenable biologic system.
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Affiliation(s)
- Jonas Lötscher
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Adrià-Arnau Martí I Líndez
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland; Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland; Department of Medicine, CITIID, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK
| | - Nicole Kirchhammer
- Department of Biomedicine, Cancer Immunology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Elisabetta Cribioli
- Ludwig Institute for Cancer Research, University of Lausanne, 1066 Epalinges, Switzerland; Department of Oncology, University Hospital of Lausanne, 1011 Lausanne, Switzerland
| | - Greta Maria Paola Giordano Attianese
- Ludwig Institute for Cancer Research, University of Lausanne, 1066 Epalinges, Switzerland; Department of Oncology, University Hospital of Lausanne, 1011 Lausanne, Switzerland
| | - Marcel P Trefny
- Department of Biomedicine, Cancer Immunology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Markus Lenz
- University of Applied Science Northwestern Switzerland, Institute for Ecopreneurship, 4132 Muttenz, Switzerland
| | - Sacha I Rothschild
- Division of Medical Oncology and Comprehensive Cancer Center, University Hospital Basel, 4031 Basel, Switzerland; Swiss Group for Clinical Cancer Research, 3008 Bern, Switzerland
| | - Paolo Strati
- Department of Lymphoma and Myeloma, University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Marco Künzli
- Department of Biomedicine, Immune Cell Biology, University and University Hospital of Basel, 4031 Basel, Switzerland
| | - Claudia Lotter
- Department of Pharmaceutical Sciences, Pharmaceutical Technology, University of Basel, 4056 Basel, Switzerland
| | - Susanne H Schenk
- Department of Pharmaceutical Sciences, Pharmaceutical Technology, University of Basel, 4056 Basel, Switzerland
| | - Philippe Dehio
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Jordan Löliger
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Ludivine Litzler
- Department of Biomedicine, Immune Cell Biology, University and University Hospital of Basel, 4031 Basel, Switzerland
| | - David Schreiner
- Department of Biomedicine, Immune Cell Biology, University and University Hospital of Basel, 4031 Basel, Switzerland
| | - Victoria Koch
- Department of Biomedicine, Cancer Immunology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Nicolas Page
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Dahye Lee
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Jasmin Grählert
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Dmitry Kuzmin
- Hornet Therapeutics Ltd, London SW1Y 5ES, UK; Department of Medical Oncology, Yale School of Medicine, New Haven, CT 06510, USA
| | - Anne-Valérie Burgener
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland
| | - Doron Merkler
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
| | - Miklos Pless
- Swiss Group for Clinical Cancer Research, 3008 Bern, Switzerland; Department of Oncology, Cantonal Hospital Winterthur, 8400 Winterthur, Switzerland
| | - Maria L Balmer
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland; Department for Biomedical Research (DBMR), University Clinic for Diabetes, Endocrinology, Clinical Nutrition and Metabolism, Inselspital, University of Bern, 3008 Bern, Switzerland; Diabetes Center Berne (DCB), 3010 Bern, Switzerland
| | - Walter Reith
- Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, 1211 Geneva, Switzerland
| | - Jörg Huwyler
- Department of Pharmaceutical Sciences, Pharmaceutical Technology, University of Basel, 4056 Basel, Switzerland
| | - Melita Irving
- Ludwig Institute for Cancer Research, University of Lausanne, 1066 Epalinges, Switzerland; Department of Oncology, University Hospital of Lausanne, 1011 Lausanne, Switzerland
| | - Carolyn G King
- Department of Biomedicine, Immune Cell Biology, University and University Hospital of Basel, 4031 Basel, Switzerland
| | - Alfred Zippelius
- Department of Biomedicine, Cancer Immunology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland; Division of Medical Oncology and Comprehensive Cancer Center, University Hospital Basel, 4031 Basel, Switzerland
| | - Christoph Hess
- Department of Biomedicine, Immunobiology, University of Basel and University Hospital of Basel, 4031 Basel, Switzerland; Department of Medicine, CITIID, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge CB2 0AW, UK.
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14
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Guha S, Paidi RK, Goswami S, Saha P, Biswas SC. ICAM-1 protects neurons against Amyloid-β and improves cognitive behaviors in 5xFAD mice by inhibiting NF-κB. Brain Behav Immun 2022; 100:194-210. [PMID: 34875346 DOI: 10.1016/j.bbi.2021.11.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 11/08/2021] [Accepted: 11/29/2021] [Indexed: 10/19/2022] Open
Abstract
Alzheimer's disease (AD) is mainly characterized by amyloid beta (Aβ) plaque deposition and neurofibrillary tangle formation due to tau hyperphosphorylation. It has been shown that astrocytes respond to these pathologies very early and exert either beneficial or deleterious effects towards neurons. Here, we identified soluble intercellular adhesion molecule-1 (ICAM-1) which is rapidly increased in astrocyte conditioned medium derived from Aβ1-42 treated cultured astrocytes (Aβ1-42-ACM). Aβ1-42-ACM was found to be neuroprotective, however, Aβ1-42-ACM deprived of ICAM-1 was unable to protect neurons against Aβ1-42 mediated toxicity. Moreover, exogenous ICAM-1 renders protection to neurons from Aβ1-42 induced death. It blocks Aβ1-42-mediated PARP cleavage and increases the levels of anti-apoptotic proteins such as Bcl-2 and Bcl-xL, and decreases pro-apoptotic protein Bim. In an Aβ-infused rat model of AD and in 5xFAD mouse, intra-peritoneal administration of ICAM-1 revealed a reduction in Aβ load in hippocampal and cortical regions. Moreover, ICAM-1 treatment led to an increment in the expression of the Aβ-degrading enzyme, neprilysin in 5xFAD mice. Finally, we found that ICAM-1 can ameliorate cognitive deficits in Aβ-infused rat and 5xFAD mouse. Interestingly, ICAM-1 could block the NF-κB upregulation by Aβ and inhibition of NF-κB recovers cognitive impairments in 5xFAD mice. Thus, our study finds a neuroprotective role of ICAM-1 and suggests that it can be a major candidate in cytokine-mediated therapy of AD.
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Affiliation(s)
- Subhalakshmi Guha
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Ramesh Kumar Paidi
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700 032, India; Current address: Department of Neurological Sciences, RUMC, 1735 West Harrison St, Suite Cohn 336, Chicago, IL 60612, USA
| | - Soumita Goswami
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700 032, India
| | - Pampa Saha
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700 032, India; Current address: Department of Neurological Surgery, University of Pittsburgh, 200 Lothrop Street, Scaife Hall, Pittsburgh 15213, USA
| | - Subhas C Biswas
- Cell Biology and Physiology Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Kolkata 700 032, India.
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15
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Peng Z, Zhang Y, Ma X, Zhou M, Wu S, Song Z, Yuan Y, Chen Y, Li Y, Wang G, Huang F, Qiao Y, Xia B, Liu W, Liu J, Zhang X, He X, Pan T, Xu H, Zhang H. Brd4 Regulates the Homeostasis of CD8 + T-Lymphocytes and Their Proliferation in Response to Antigen Stimulation. Front Immunol 2021; 12:728082. [PMID: 34512660 PMCID: PMC8427756 DOI: 10.3389/fimmu.2021.728082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 08/05/2021] [Indexed: 12/24/2022] Open
Abstract
CD8+ T cells are major components of adaptive immunity and confer robust protective cellular immunity, which requires adequate T-cell numbers, targeted migration, and efficient T-cell proliferation. Altered CD8+ T-cell homeostasis and impaired proliferation result in dysfunctional immune response to infection or tumorigenesis. However, intrinsic factors controlling CD8+ T-cell homeostasis and immunity remain largely elusive. Here, we demonstrate the prominent role of Brd4 on CD8+ T cell homeostasis and immune response. By upregulating Myc and GLUT1 expression, Brd4 facilitates glucose uptake and energy production in mitochondria, subsequently supporting naïve CD8+ T-cell survival. Besides, Brd4 promotes the trafficking of naïve CD8+ T cells partially through maintaining the expression of homing receptors (CD62L and LFA-1). Furthermore, Brd4 is required for CD8+ T cell response to antigen stimulation, as Brd4 deficiency leads to a severe defect in clonal expansion and terminal differentiation by decreasing glycolysis. Importantly, as JQ1, a pan-BRD inhibitor, severely dampens CD8+ T-cell immune response, its usage as an anti-tumor agent or latency-reversing agent for human immunodeficiency virus type I (HIV-1) should be more cautious. Collectively, our study identifies a previously-unexpected role of Brd4 in the metabolic regulation of CD8+ T cell-mediated immune surveillance and also provides a potential immunomodulation target.
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Affiliation(s)
- Zhilin Peng
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yiwen Zhang
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xiancai Ma
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Mo Zhou
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Shiyu Wu
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Zheng Song
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yaochang Yuan
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yingshi Chen
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Yuzhuang Li
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Guanwen Wang
- Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Feng Huang
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, China
| | - Yidan Qiao
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Baijing Xia
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Weiwei Liu
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Jun Liu
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xu Zhang
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Xin He
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
| | - Ting Pan
- Center for Infection and Immunity Studies, School of Medicine, Sun Yat-sen University, Shenzhen, China
| | - Hanshi Xu
- Department of Rheumatology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hui Zhang
- Key Laboratory of Tropical Disease Control of Ministry of Education, Institute of Human Virology, Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
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16
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Gao Y, Wang Y, Luo F, Chu Y. Optimization of T Cell Redirecting Strategies: Obtaining Inspirations From Natural Process of T Cell Activation. Front Immunol 2021; 12:664329. [PMID: 33981310 PMCID: PMC8107274 DOI: 10.3389/fimmu.2021.664329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/29/2021] [Indexed: 12/13/2022] Open
Abstract
Chimeric antigen receptors (CARs) or bispecific antibodies (bsAbs) redirected T cell against tumors is one of the most promising immunotherapy approaches. However, insufficient clinical outcomes are still observed in treatments of both solid and non-solid tumors. Limited efficacy and poor persistence are two major challenges in redirected T cell therapies. The immunological synapse (IS) is a vital component during the T cell response, which largely determines the clinical outcomes of T cell-based therapies. Here, we review the structural and signaling characteristics of IS formed by natural T cells and redirected T cells. Furthermore, inspired by the elaborate natural T cell receptor-mediated IS, we provide potential strategies for higher efficacy and longer persistence of redirected T cells.
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Affiliation(s)
- Yiyuan Gao
- Institutes of Biomedical Sciences, and Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Center, Fudan University, Shanghai, China
| | - Yuedi Wang
- Institutes of Biomedical Sciences, and Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Center, Fudan University, Shanghai, China
| | - Feifei Luo
- Biotherapy Research Center, Fudan University, Shanghai, China.,Department of Digestive Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Yiwei Chu
- Institutes of Biomedical Sciences, and Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Center, Fudan University, Shanghai, China
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17
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Kumar S, Singh SK, Rana B, Rana A. Tumor-infiltrating CD8 + T cell antitumor efficacy and exhaustion: molecular insights. Drug Discov Today 2021; 26:951-967. [PMID: 33450394 PMCID: PMC8131230 DOI: 10.1016/j.drudis.2021.01.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 11/20/2020] [Accepted: 01/07/2021] [Indexed: 02/06/2023]
Abstract
Host immunity has an essential role in the clinical management of cancers. Therefore, it is advantageous to choose therapies that can promote tumor cell death and concurrently boost host immunity. The dynamic tumor microenvironment (TME) determines whether an antineoplastic drug will elicit favorable or disparaging immune responses from tumor-infiltrating lymphocytes (TILs). CD8+ T cells are one of the primary tumor-infiltrating immune cells that deliver antitumor responses. Here, we review the influence of various factors in the TME on CD8+ T cell exhaustion and survival, and possible strategies for restoring CD8+ T cell effector function through immunotherapy.
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Affiliation(s)
- Sandeep Kumar
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, IL 60612, USA.
| | - Sunil Kumar Singh
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, IL 60612, USA
| | - Basabi Rana
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, IL 60612, USA; University of Illinois Hospital & Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612, USA; Jesse Brown VA Medical Center, Chicago, IL 60612, USA
| | - Ajay Rana
- Department of Surgery, Division of Surgical Oncology, University of Illinois at Chicago, IL 60612, USA; University of Illinois Hospital & Health Sciences System Cancer Center, University of Illinois at Chicago, Chicago, IL 60612, USA; Jesse Brown VA Medical Center, Chicago, IL 60612, USA
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18
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Xi Y, Ma Y, Xie B, Di A, Xu S, Luo X, Wang C, Dai H, Yan G, Qi Z. Vitamin D3 combined with antibody agents suppresses alloreactive memory T-cell responses to induce heart allograft long-term survival. Transpl Immunol 2021; 66:101374. [PMID: 33592299 DOI: 10.1016/j.trim.2021.101374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/11/2021] [Accepted: 02/11/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND The pre-stored memory T cells in organ transplant patient carry a high risk of allograft rejection. The current study aimed to determine whether the allogenic response of adoptively transferred memory T cells in mice was suppressed by vitamin D3 monotherapy alone or in combination with monoclonal antibody treatment. METHODS Prior to vascularized heterotopic heart transplantation, naïve C57BL/6 mice were primed with memory T cells. Recipient mice were administered vitamin D3 alone or in combination with monoclonal antibodies (anti-CD40L/ anti-LFA-1). Memory T cells and CD4+ forkhead box P3+ T cells in recipient spleens were measured using flow cytometry. Additionally, the expression of cytokines was measured by ELISA and quantitative PCR. Inflammatory factors in the grafts were identified by hematoxylin and eosin staining. RESULTS Vitamin D3 in conjunction with anti-CD40L/ anti-LFA-1 antibodies were administered according to the median survival time from 6.5 to 80 days. The results revealed that grafts were protected through the prevention of inflammatory cell infiltration. Combined treatment decreased the mRNA levels of IL-2, IFN-γ and IL-10 and increased the mRNA levels of IL-4, Foxp3 and TGF-β in the allograft. Rejection was suppressed by a reduction of CD4+CD44high CD62L+ and CD8+ CD44high CD62L+ memory T cells, the induction of regulatory T cells in the recipient spleen and a reduction of serum IL-2, IFN-γ and IL-10 levels. CONCLUSION Vitamin D3 efficiently protected allografts from memory T-cell allo-responses when combined with anti-CD40L/anti-LFA-1 antibodies therapy.
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Affiliation(s)
- Yanfeng Xi
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China; The tumor hospital of Chang Zhou, Chang Zhou, Jiangsu, China
| | - Yunhan Ma
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Baiyi Xie
- Department of Urology Surgery, Ruikang Hospital affiliated to Guangxi University of Chinese Medicine, Nanning, Guangxi, China
| | - Anjie Di
- Basic Medical Department of Medical College, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Shuangyue Xu
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Xuewei Luo
- Medicinal College, Guangxi University, Nanning, Guangxi, China
| | - Chenxi Wang
- Basic Medical Department of Medical College, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Helong Dai
- Department of Kidney Transplantation, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China; Clinical Research Center for Organ Transplantation in Hunan Province, Changsha, Hunan, China; Clinical Immunology Center, Central South University, Changsha, Hunan 410000, China.
| | - Guoliang Yan
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China; Basic Medical Department of Medical College, School of Medicine, Xiamen University, Xiamen, Fujian, China.
| | - Zhongquan Qi
- Fujian Provincial Key Laboratory of Organ and Tissue Regeneration, School of Medicine, Xiamen University, Xiamen, Fujian, China; Medicinal College, Guangxi University, Nanning, Guangxi, China.
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Kumashie KG, Cebula M, Hagedorn C, Kreppel F, Pils MC, Koch-Nolte F, Rissiek B, Wirth D. Improved Functionality of Exhausted Intrahepatic CXCR5+ CD8+ T Cells Contributes to Chronic Antigen Clearance Upon Immunomodulation. Front Immunol 2021; 11:592328. [PMID: 33613516 PMCID: PMC7886981 DOI: 10.3389/fimmu.2020.592328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 12/15/2020] [Indexed: 12/23/2022] Open
Abstract
Chronic hepatotropic viral infections are characterized by exhausted CD8+ T cells in the presence of cognate antigen in the liver. The impairment of T cell response limits the control of chronic hepatotropic viruses. Immune-modulatory strategies are attractive options to re-invigorate exhausted T cells. However, in hepatotropic viral infections, the knowledge about immune-modulatory effects on the in-situ regulation of exhausted intrahepatic CD8+ T cells is limited. In this study, we elucidated the functional heterogeneity in the pool of exhausted CD8+ T cells in the liver of mice expressing the model antigen Ova in a fraction of hepatocytes. We found a subpopulation of intrahepatic CXCR5+ Ova-specific CD8+ T cells, which are profoundly cytotoxic, exhibiting efficient metabolic functions as well as improved memory recall and self-maintenance. The intrahepatic Ova-specific CXCR5+ CD8+ T cells are possibly tissue resident cells, which may rely largely on OXPHOS and glycolysis to fuel their cellular processes. Importantly, host conditioning with CpG oligonucleotide reinvigorates and promotes exhausted T cell expansion, facilitating complete antigen eradication. The CpG oligonucleotide-mediated reinvigoration may support resident memory T cell formation and the maintenance of CXCR5+ Ova-specific CD8+ T cells in the liver. These findings suggest that CpG oligodinucleotide may preferentially target CXCR5+ CD8+ T cells for expansion to facilitate the revival of exhausted T cells. Thus, therapeutic strategies aiming to expand CXCR5+ CD8+ T cells might provide a novel approach against chronic liver infection.
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Affiliation(s)
- Kingsley Gideon Kumashie
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Marcin Cebula
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Claudia Hagedorn
- Chair of Biochemistry and Molecular Medicine, University Witten/Herdecke, Witten, Germany
| | - Florian Kreppel
- Chair of Biochemistry and Molecular Medicine, University Witten/Herdecke, Witten, Germany
| | - Marina C Pils
- Mouse Pathology Unit, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Friedrich Koch-Nolte
- Institute of Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Björn Rissiek
- Institute of Neurology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Dagmar Wirth
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany.,Institute of Experimental Hematology, Hannover Medical School, Hannover, Germany
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20
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Perro M, Iannacone M, von Andrian UH, Peixoto A. Role of LFA-1 integrin in the control of a lymphocytic choriomeningitis virus (LCMV) infection. Virulence 2020; 11:1640-1655. [PMID: 33251934 PMCID: PMC7714442 DOI: 10.1080/21505594.2020.1845506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Leukocyte function-associated antigen 1 (LFA-1) is the most widely expressed member of the β2 integrin family of cell-cell adhesion molecules. Although LFA-1 is thought to regulate multiple aspects of T cell immunity, its role in the response of CD8+ T cells to viral infections remains unclear. Indeed, compelling clinical evidence shows that loss of LFA-1 function predisposes to infection in humans but animal models show limited to no susceptibility to infection. Here, we addressed this conundrum in a mouse model of infection with lymphocytic choriomeningitis virus (LCMV), where CD8+ T cells are necessary and sufficient to confer protection. To this end, we followed the fate and function of wild-type and LFA-1 deficient virus-specific CD8+ T cells and assessed the effect of blocking anti-LFA-1 monoclonal antibody in the outcome of infection. Our analysis of viral clearance and T cell responses using transcriptome profiling reveals a role for LFA-1 as a gatekeeper of effector T cell survival and dysfunction that when defective can predispose to LCMV infection.
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Affiliation(s)
- Mario Perro
- Harvard Medical School , Department of Microbiology and Immunobiology, Boston, Massachusetts, USA
| | - Matteo Iannacone
- Harvard Medical School , Department of Microbiology and Immunobiology, Boston, Massachusetts, USA
| | - Ulrich H von Andrian
- Harvard Medical School , Department of Microbiology and Immunobiology, Boston, Massachusetts, USA
| | - Antonio Peixoto
- Harvard Medical School , Department of Microbiology and Immunobiology, Boston, Massachusetts, USA
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21
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Connexin-Mediated Signaling at the Immunological Synapse. Int J Mol Sci 2020; 21:ijms21103736. [PMID: 32466338 PMCID: PMC7279457 DOI: 10.3390/ijms21103736] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 12/22/2022] Open
Abstract
The immunological synapse (IS) is an intercellular communication platform, organized at the contact site of two adjacent cells, where at least one is an immune cell. Functional IS formation is fundamental for the modulation of the most relevant immune system activities, such as T cell activation by antigen presenting cells and T cell/natural killer (NK) cell-mediated target cell (infected or cancer) killing. Extensive evidence suggests that connexins, in particular connexin-43 (Cx43) hemichannels and/or gap junctions, regulate signaling events in different types of IS. Although the underlying mechanisms are not fully understood, the current evidence suggests that Cx43 channels could act as facilitators for calcium ions, cyclic adenosine monophosphate, and/or adenosine triphosphate uptake and/or release at the interface of interacting cells. These second messengers have relevant roles in the IS signaling during dendritic cell-mediated T and NK cell activation, regulatory T cell-mediated immune suppression, and cytotoxic T lymphocyte or NK cell-mediated target tumor cell killing. Additionally, as the cytoplasmic C-terminus domain of Cx43 interacts with a plethora of proteins, Cx43 may act as scaffolds for integration of various regulatory proteins at the IS, as suggested by the high number of Cx43-interacting proteins that translocate at these cell-cell interface domains. In this review, we provide an updated overview and analysis on the role and possible underlying mechanisms of Cx43 in IS signaling.
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22
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Zhu M, Ma Y, Tan K, Zhang L, Wang Z, Li Y, Chen Y, Guo J, Yan G, Qi Z. Thalidomide with blockade of co-stimulatory molecules prolongs the survival of alloantigen-primed mice with cardiac allografts. BMC Immunol 2020; 21:19. [PMID: 32299357 PMCID: PMC7164359 DOI: 10.1186/s12865-020-00352-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 04/07/2020] [Indexed: 01/20/2023] Open
Abstract
Background Miscellaneous memory cell populations that exist before organ transplantation are crucial barriers to transplantation. In the present study, we used a skin-primed heart transplantation model in mouse to evaluate the abilities of Thalidomide (TD), alone or in combination with co-stimulatory blockade, using monoclonal antibodies (mAbs) against memory T cells and alloantibodies to prolong the second cardiac survival. Results In the skin-primed heart transplantation model, TD combined with mAbs significantly prolonged the second cardiac survival, accompanied by inhibition of memory CD8+ T cells. This combined treatment enhanced the CD4+Foxp3+ regulatory T cells ratio in the spleen, restrained the infiltration of lymphocytes into the allograft, and suppressed the allo-response of spleen T cells in the recipient. The levels of allo-antibodies also decreased in the recipient serum. In addition, we detected low levels of the constitutions of the lytic machinery of cytotoxic cells, which cause allograft damage. Conclusions Our study indicated a potential synergistic action of TD in combination with with mAbs to suppress the function of memory T cells and increase the survival of second allografts in alloantigen-primed mice.
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Affiliation(s)
- Maoshu Zhu
- Xiang'an Branch, The First Affiliated Hospital of Xiamen University, Xiamen, 361100, Fujian, China.,The Fifth Hospital of Xiamen, Xiamen, 361100, Fujian, China
| | - Yunhan Ma
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China
| | - Kai Tan
- Grade 2015 Clinical Medicine, Fuzhou Medical College of Nanchang University, Fuzhou, 344000, Jiangxi, China
| | - Liyi Zhang
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China
| | - Zhaowei Wang
- Xiang'an Branch, The First Affiliated Hospital of Xiamen University, Xiamen, 361100, Fujian, China.,The Fifth Hospital of Xiamen, Xiamen, 361100, Fujian, China
| | - Yongsheng Li
- Xiang'an Branch, The First Affiliated Hospital of Xiamen University, Xiamen, 361100, Fujian, China.,The Fifth Hospital of Xiamen, Xiamen, 361100, Fujian, China
| | - Yingyu Chen
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China
| | - Junjun Guo
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China.,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China
| | - Guoliang Yan
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China. .,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China.
| | - Zhongquan Qi
- Organ Transplantation institute, School of Medicine, Xiamen University, Xiamen, 361100, Fujian, China. .,Fujian Key Laboratory of Organ and Tissue Regeneration, Xiamen, 361100, Fujian, China. .,School of Medicine, Guangxi University, Nanning, 530004, Guangxi, China.
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23
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Liu YY, Sha W, Xu S, Gui XW, Xia L, Ji P, Wang S, Zhao GP, Zhang X, Chen Y, Wang Y. Identification of HLA-A2-Restricted Mycobacterial Lipoprotein Z Peptides Recognized by T CellsFrom Patients With ActiveTuberculosis Infection. Front Microbiol 2018; 9:3131. [PMID: 30622521 PMCID: PMC6308912 DOI: 10.3389/fmicb.2018.03131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Accepted: 12/04/2018] [Indexed: 12/14/2022] Open
Abstract
Identification of HLA-restricted peptides derived from mycobacterial antigens that are endowed with high affinity and strong antigenicity is not only of interest in tuberculosis (TB) diagnostics and treatment efficacy evaluation, but might also provide potential candidates for the development of therapeutic vaccines against drug-resistant TB. Our previous work demonstrated that lipoprotein Z (LppZ) displayed high immunogenicity and antigenicity in active TB patients. In the present study, ten HLA-A2-restricted LppZ peptides (LppZp1-10) were predicted by bioinformatics, among which LppZp7 and LppZp10 were verified to possess high affinity to HLA-A2 molecules using T2 cell-based affinity binding assay. Moreover, results from ELISpot assay showed that both LppZp7 and LppZp10 peptides were able to induce more IFN-γ producing cells upon ex vivo stimulation of PBMC from HLA-A2+ active TB (ATB) patients as compared to those from healthy controls (HCs). Also, the numbers of LppZp7 and LppZp10-specific IFN-γ producing cells exhibited positive correlations with those of ESAT-6 peptide (E6p) or CFP-10 peptide (C10p) in ATB. Interestingly, stimulation with LppZp7/p10 mixture was able to induce higher intracellular expression of IFN-γ and IL-2 cytokines in CD8+ and CD4+ T cells from ATB as compared to HC, associated with lower expression of TNF-α in both CD8+ and CD4+ T cells. Taken together, HLA-A2-restricted LppZp7 and LppZp10 peptides display high immunoreactivity in HLA-matched ATB patients demonstrated by high responsiveness in both CD8+ and CD4+ T cells. With the ability to induce strong antigen-specific cellular responses, LppZp7 and LppZp10 are of potential value for the future applications in the prevention and control of TB.
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Affiliation(s)
- Yuan-Yong Liu
- School of Life Science and Technology, Changchun University of Science and Technology, Changchun, China.,Department of Microbiology and Immunology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Sha
- Clinic and Research Center of Tuberculosis, Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shiqiang Xu
- Department of Microbiology and Immunology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xu-Wei Gui
- Clinic and Research Center of Tuberculosis, Shanghai Key Laboratory of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Liliang Xia
- Department of Microbiology and Immunology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ping Ji
- Department of Microbiology and Immunology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shujun Wang
- Department of Microbiology and Immunology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guo-Ping Zhao
- Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
| | - Xiao Zhang
- School of Life Science and Technology, Changchun University of Science and Technology, Changchun, China
| | - Yingying Chen
- Department of Microbiology and Immunology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Wang
- Department of Microbiology and Immunology, Shanghai Institute of Immunology, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, China
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24
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Muller J, Baeyens A, Dustin ML. Tumor Necrosis Factor Receptor Superfamily in T Cell Priming and Effector Function. Adv Immunol 2018; 140:21-57. [PMID: 30366518 DOI: 10.1016/bs.ai.2018.08.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The tumor necrosis factor receptor superfamily (TNFRSF) and their ligands mediate lymphoid tissue development and homeostasis in addition to key aspects of innate and adaptive immune responses. T cells of the adaptive immune system express a number of TNFRSF members that are used to receive signals at different instructive stages and produce several tumor necrosis factor superfamily (TNFSF) members as effector molecules. There is also one example of a TNFRSF member serving as a ligand for negative regulatory checkpoint receptors. In most cases, the ligands in afferent and efferent phases are membrane proteins and thus the interaction with TNFRSF members must take place in immunological synapses and other modes of cell-cell interaction. A particular feature of the TNFRSF-mediated signaling is the prominent use of linear ubiquitin chains as scaffolds for signaling complexes that activate nuclear factor κ-B and Fos/Jun transcriptional regulators. This review will focus on the signaling mechanisms triggered by TNFRSF members in their role as costimulators of early and late phases of T cell instruction and the delivery mechanism of TNFSF members through the immunological synapses of helper and cytotoxic effector cells.
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Affiliation(s)
- James Muller
- Skirball Institute of Biomolecular Medicine and Immunology Training Program, New York University School of Medicine, New York, NY, United States
| | - Audrey Baeyens
- Skirball Institute of Biomolecular Medicine and Immunology Training Program, New York University School of Medicine, New York, NY, United States
| | - Michael L Dustin
- Skirball Institute of Biomolecular Medicine and Immunology Training Program, New York University School of Medicine, New York, NY, United States; Nuffield Department of Orthopaedics Rheumatology and Musculoskeletal Sciences, Kennedy Institute of Rheumatology, University of Oxford, Oxford, United Kingdom.
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25
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Sanchez-Blanco C, Clarke F, Cornish GH, Depoil D, Thompson SJ, Dai X, Rawlings DJ, Dustin ML, Zamoyska R, Cope AP, Purvis HA. Protein tyrosine phosphatase PTPN22 regulates LFA-1 dependent Th1 responses. J Autoimmun 2018; 94:45-55. [PMID: 30054208 PMCID: PMC6198113 DOI: 10.1016/j.jaut.2018.07.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/13/2018] [Accepted: 07/13/2018] [Indexed: 02/07/2023]
Abstract
A missense C1858T single nucleotide polymorphism within PTPN22 is a strong genetic risk factor for the development of multiple autoimmune diseases. PTPN22 encodes a protein tyrosine phosphatase that negatively regulates immuno-receptor proximal Src and Syk family kinases. Notably, PTPN22 negatively regulates kinases downstream of T-cell receptor (TCR) and LFA-1, thereby setting thresholds for T-cell activation. Alterations to the quality of TCR and LFA-1 engagement at the immune synapse and the regulation of downstream signals can have profound effects on the type of effector T-cell response induced. Here we describe how IFNγ+ Th1 responses are potentiated in Ptpn22−/− T-cells and in T-cells from mice expressing Ptpn22R619W (the mouse orthologue of the human genetic variant) as they age, or following repeated immune challenge, and explore the mechanisms contributing to the expansion of Th1 cells. Specifically, we uncover two LFA-1-ICAM dependent mechanisms; one T-cell intrinsic, and one T-cell extrinsic. Firstly, we found that in vitro anti-CD3/LFA-1 induced Th1 responses were enhanced in Ptpn22−/− T-cells compared to WT, whereas anti-CD3/anti-CD28 induced IFNy responses were similar. These data were associated with an enhanced ability of Ptpn22−/− T-cells to engage ICAM-1 at the immune synapse when incubated on planar lipid bilayers, and to form conjugates with dendritic cells. Secondly, we observed a T-cell extrinsic mechanism whereby repeated stimulation of WT OT-II T-cells with LPS and OVA323-339 pulsed Ptpn22−/− bone marrow derived dendritic cells (BMDCs) was sufficient to enhance Th1 cell development compared to WT BMDCs. Furthermore, this response could be reversed by LFA-1 blockade. Our data point to two related but distinct mechanisms by which PTPN22 regulates LFA-1 dependent signals to enhance Th1 development, highlighting how perturbations to PTPN22 function over time to regulate the balance of the immune response. PTPN22R620W is one of the strongest risk factors for multiple autoimmune diseases. In Ptpn22−/− and Ptpn22R619W mice IFNy+ Th1 cells preferentially and significantly expand with age or following immune challenge. PTPN22 negatively regulates IFNγ+ Th1 cells by T-cell and dendritic cell LFA-1-ICAM-1 dependent mechanisms. PTPN22 negatively regulates LFA-1 induced Th1 cells enhancing T-cell LFA-1 clustering and immune synapse formation. Repeated stimulation of T-cells with Ptpn22−/− BMDC enhances Th1 responses.
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Affiliation(s)
- Cristina Sanchez-Blanco
- Centre for Inflammation Biology and Cancer Immunology, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Fiona Clarke
- Centre for Inflammation Biology and Cancer Immunology, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Georgina H Cornish
- Centre for Inflammation Biology and Cancer Immunology, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - David Depoil
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Stephen J Thompson
- Centre for Inflammation Biology and Cancer Immunology, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Xuezhi Dai
- Seattle Children's Research Institute, Departments of Pediatrics and Immunology, University of Washington School of Medicine, Seattle, WA, USA
| | - David J Rawlings
- Seattle Children's Research Institute, Departments of Pediatrics and Immunology, University of Washington School of Medicine, Seattle, WA, USA
| | - Michael L Dustin
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom
| | - Rose Zamoyska
- Institute of Immunology and Infection Research, Centre for Immunity, Infection and Evolution, University of Edinburgh, Edinburgh, United Kingdom
| | - Andrew P Cope
- Centre for Inflammation Biology and Cancer Immunology, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom
| | - Harriet A Purvis
- Centre for Inflammation Biology and Cancer Immunology, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom.
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26
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Brummelman J, Pilipow K, Lugli E. The Single-Cell Phenotypic Identity of Human CD8+ and CD4+ T Cells. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2018; 341:63-124. [DOI: 10.1016/bs.ircmb.2018.05.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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27
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Ju L, Chen Y, Li K, Yuan Z, Liu B, Jackson SP, Zhu C. Dual Biomembrane Force Probe enables single-cell mechanical analysis of signal crosstalk between multiple molecular species. Sci Rep 2017; 7:14185. [PMID: 29079742 PMCID: PMC5660210 DOI: 10.1038/s41598-017-13793-3] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 10/02/2017] [Indexed: 02/07/2023] Open
Abstract
Conventional approaches for studying receptor-mediated cell signaling, such as the western blot and flow cytometry, are limited in three aspects: 1) The perturbing preparation procedures often alter the molecules from their native state on the cell; 2) Long processing time before the final readout makes it difficult to capture transient signaling events (<1 min); 3) The experimental environments are force-free, therefore unable to visualize mechanical signals in real time. In contrast to these methods in biochemistry and cell biology that are usually population-averaged and non-real-time, here we introduce a novel single-cell based nanotool termed dual biomembrane force probe (dBFP). The dBFP provides precise controls and quantitative readouts in both mechanical and chemical terms, which is particularly suited for juxtacrine signaling and mechanosensing studies. Specifically, the dBFP allows us to analyze dual receptor crosstalk by quantifying the spatiotemporal requirements and functional consequences of the up- and down-stream signaling events. In this work, the utility and power of the dBFP has been demonstrated in four important dual receptor systems that play key roles in immunological synapse formation, shear-dependent thrombus formation, and agonist-driven blood clotting.
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Affiliation(s)
- Lining Ju
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, 30332, GA, United States.
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, 30332, GA, USA.
- Heart Research Institute, Newtown, 2050, NSW, Australia.
- Charles Perkins Centre, The University of Sydney, Camperdown, 2006, NSW, Australia.
| | - Yunfeng Chen
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, 30332, GA, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, 30332, GA, USA
- Department of Molecular Medicine, MERU-Roon Research Center on Vascular Biology, The Scripps Research Institute, La Jolla, 92037, CA, USA
| | - Kaitao Li
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, 30332, GA, United States
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, 30332, GA, USA
| | - Zhou Yuan
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, 30332, GA, USA
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, 30332, GA, USA
| | - Baoyu Liu
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, 30332, GA, United States
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, 30332, GA, USA
| | - Shaun P Jackson
- Heart Research Institute, Newtown, 2050, NSW, Australia
- Charles Perkins Centre, The University of Sydney, Camperdown, 2006, NSW, Australia
| | - Cheng Zhu
- Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, 30332, GA, United States.
- Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, 30332, GA, USA.
- Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, 30332, GA, USA.
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Ross SL, Sherman M, McElroy PL, Lofgren JA, Moody G, Baeuerle PA, Coxon A, Arvedson T. Bispecific T cell engager (BiTE®) antibody constructs can mediate bystander tumor cell killing. PLoS One 2017; 12:e0183390. [PMID: 28837681 PMCID: PMC5570333 DOI: 10.1371/journal.pone.0183390] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 08/03/2017] [Indexed: 12/21/2022] Open
Abstract
For targets that are homogenously expressed, such as CD19 on cells of the B lymphocyte lineage, immunotherapies can be highly effective. Targeting CD19 with blinatumomab, a CD19/CD3 bispecific antibody construct (BiTE®), or with chimeric antigen receptor T cells (CAR-T) has shown great promise for treating certain CD19-positive hematological malignancies. In contrast, solid tumors with heterogeneous expression of the tumor-associated antigen (TAA) may present a challenge for targeted therapies. To prevent escape of TAA-negative cancer cells, immunotherapies with a local bystander effect would be beneficial. As a model to investigate BiTE®-mediated bystander killing in the solid tumor setting, we used epidermal growth factor receptor (EGFR) as a target. We measured lysis of EGFR-negative populations in vitro and in vivo when co-cultured with EGFR-positive cells, human T cells and an EGFR/CD3 BiTE® antibody construct. Bystander EGFR-negative cells were efficiently lysed by BiTE®-activated T cells only when proximal to EGFR-positive cells. Our mechanistic analysis suggests that cytokines released by BiTE®-activated T-cells induced upregulation of ICAM-1 and FAS on EGFR-negative bystander cells, contributing to T cell-induced bystander cell lysis.
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Affiliation(s)
- Sandra L. Ross
- Department of Oncology Research, Amgen Inc., Thousand Oaks, California, United States of America
| | - Marika Sherman
- Department of Oncology Research, Amgen Inc., Thousand Oaks, California, United States of America
| | - Patricia L. McElroy
- Department of Oncology Research, Amgen Inc., Thousand Oaks, California, United States of America
| | - Julie A. Lofgren
- Department of Oncology Research, Amgen Inc., Thousand Oaks, California, United States of America
| | - Gordon Moody
- Department of Oncology Research, Amgen Inc., Thousand Oaks, California, United States of America
| | | | - Angela Coxon
- Department of Oncology Research, Amgen Inc., Thousand Oaks, California, United States of America
| | - Tara Arvedson
- Department of Oncology Research, Amgen Inc., Thousand Oaks, California, United States of America
- * E-mail:
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Papazian D, Hansen S, Würtzen PA. Airway responses towards allergens - from the airway epithelium to T cells. Clin Exp Allergy 2016; 45:1268-87. [PMID: 25394747 DOI: 10.1111/cea.12451] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The prevalence of allergic diseases such as allergic rhinitis is increasing, affecting up to 30% of the human population worldwide. Allergic sensitization arises from complex interactions between environmental exposures and genetic susceptibility, resulting in inflammatory T helper 2 (Th2) cell-derived immune responses towards environmental allergens. Emerging evidence now suggests that an epithelial dysfunction, coupled with inherent properties of environmental allergens, can be responsible for the inflammatory responses towards allergens. Several epithelial-derived cytokines, such as thymic stromal lymphopoietin (TSLP), IL-25 and IL-33, influence tissue-resident dendritic cells (DCs) as well as Th2 effector cells. Exposure to environmental allergens does not elicit Th2 inflammatory responses or any clinical symptoms in nonatopic individuals, and recent findings suggest that a nondamaged, healthy epithelium lowers the DCs' ability to induce inflammatory T-cell responses towards allergens. The purpose of this review was to summarize the current knowledge on which signals from the airway epithelium, from first contact with inhaled allergens all the way to the ensuing Th2-cell responses, influence the pathology of allergic diseases.
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Affiliation(s)
- D Papazian
- Department of Cancer & Inflammation Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark.,ALK, Hørsholm, Denmark
| | - S Hansen
- Department of Cancer & Inflammation Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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Benvenuti F. The Dendritic Cell Synapse: A Life Dedicated to T Cell Activation. Front Immunol 2016; 7:70. [PMID: 27014259 PMCID: PMC4780025 DOI: 10.3389/fimmu.2016.00070] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 02/15/2016] [Indexed: 01/30/2023] Open
Abstract
T-cell activation within immunological synapses is a complex process whereby different types of signals are transmitted from antigen-presenting cells to T cells. The molecular strategies developed by T cells to interpret and integrate these signals have been systematically dissected in recent years and are now in large part understood. On the other side of the immune synapse, dendritic cells (DCs) participate actively in synapse formation and maintenance by remodeling of membrane receptors and intracellular content. However, the details of such changes have been only partially characterized. The DCs actin cytoskeleton has been one of the first systems to be identified as playing an important role in T-cell priming and some of the underlying mechanisms have been elucidated. Similarly, the DCs microtubule cytoskeleton undergoes major spatial changes during synapse formation that favor polarization of the DCs subcellular space toward the interacting T cell. Recently, we have begun to investigate the trafficking machinery that controls polarized delivery of endosomal vesicles at the DC–T immune synapse with the aim of understanding the functional relevance of polarized secretion of soluble factors during T-cell priming. Here, we will review the current knowledge of events occurring in DCs during synapse formation and discuss the open questions that still remain unanswered.
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Affiliation(s)
- Federica Benvenuti
- Cellular Immunology, International Centre for Genetic Engineering and Biotechnology , Trieste , Italy
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Comrie WA, Burkhardt JK. Action and Traction: Cytoskeletal Control of Receptor Triggering at the Immunological Synapse. Front Immunol 2016; 7:68. [PMID: 27014258 PMCID: PMC4779853 DOI: 10.3389/fimmu.2016.00068] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Accepted: 02/12/2016] [Indexed: 01/03/2023] Open
Abstract
It is well known that F-actin dynamics drive the micron-scale cell shape changes required for migration and immunological synapse (IS) formation. In addition, recent evidence points to a more intimate role for the actin cytoskeleton in promoting T cell activation. Mechanotransduction, the conversion of mechanical input into intracellular biochemical changes, is thought to play a critical role in several aspects of immunoreceptor triggering and downstream signal transduction. Multiple molecules associated with signaling events at the IS have been shown to respond to physical force, including the TCR, costimulatory molecules, adhesion molecules, and several downstream adapters. In at least some cases, it is clear that the relevant forces are exerted by dynamics of the T cell actomyosin cytoskeleton. Interestingly, there is evidence that the cytoskeleton of the antigen-presenting cell also plays an active role in T cell activation, by countering the molecular forces exerted by the T cell at the IS. Since actin polymerization is itself driven by TCR and costimulatory signaling pathways, a complex relationship exists between actin dynamics and receptor activation. This review will focus on recent advances in our understanding of the mechanosensitive aspects of T cell activation, paying specific attention to how F-actin-directed forces applied from both sides of the IS fit into current models of receptor triggering and activation.
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Affiliation(s)
- William A Comrie
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania , Philadelphia, PA , USA
| | - Janis K Burkhardt
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Perelman School of Medicine, University of Pennsylvania , Philadelphia, PA , USA
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Kallikourdis M, Viola A, Benvenuti F. Human Immunodeficiencies Related to Defective APC/T Cell Interaction. Front Immunol 2015; 6:433. [PMID: 26379669 PMCID: PMC4551858 DOI: 10.3389/fimmu.2015.00433] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 08/09/2015] [Indexed: 11/13/2022] Open
Abstract
The primary event for initiating adaptive immune responses is the encounter between T lymphocytes and antigen presenting cells (APCs) in the T cell area of secondary lymphoid organs and the formation of highly organized intercellular junctions referred to as immune synapses (IS). In vivo live-cell imaging of APC-T cell interactions combined to functional studies unveiled that T cell fate is dictated, in large part, by the stability of the initial contact. Immune cell interaction is equally important during delivery of T cell help to B cells and for the killing of target cells by cytotoxic T cells and NK cells. The critical role of contact dynamics and synapse stability on the immune response is well illustrated by human immune deficiencies in which disease pathogenesis is linked to altered adhesion or defective cross-talk between the synaptic partners. The Wiskott-Aldrich syndrome (WAS) is a severe primary immunodeficiency caused by mutations in the Wiskott-Aldrich syndrome protein (WASp), a scaffold that promotes actin polymerization and links TCR stimulation to T cell activation. Absence or mutations in WASp affects intercellular APC-T cell communications by interfering with multiple mechanisms on both sides of the IS. The warts, hypogammaglobulinemia, infections, and myelokathexis (WHIM) syndrome is caused by mutations in CXCR4, a chemokine receptor that in mutant form leads to impairment of APC-T cell interactions. Present evidences suggest that other recently characterized primary immune deficiencies caused by mutation in genes linked to actin cytoskeletal reorganization, such as WIP and DOCK8, may also depend on altered synapse stability. Here, we will discuss in details the mechanisms of disturbed APC-T cell interactions in WAS and WHIM. Moreover, we will summarize the evidence pointing to a compromised conjugate formation in WIP, DOCK8, and X-linked lymphoproliferative syndrome.
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Affiliation(s)
- Marinos Kallikourdis
- Humanitas University , Rozzano , Italy ; Adaptive Immunity Laboratory, Humanitas Clinical and Research Center , Rozzano , Italy
| | | | - Federica Benvenuti
- Cellular Immunology, International Centre for Genetic Engineering and Biotechnology , Trieste , Italy
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Comrie WA, Li S, Boyle S, Burkhardt JK. The dendritic cell cytoskeleton promotes T cell adhesion and activation by constraining ICAM-1 mobility. ACTA ACUST UNITED AC 2015; 208:457-73. [PMID: 25666808 PMCID: PMC4332244 DOI: 10.1083/jcb.201406120] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Integrity of the dendritic cell (DC) actin cytoskeleton is essential for T cell priming, but the underlying mechanisms are poorly understood. We show that the DC F-actin network regulates the lateral mobility of intracellular cell adhesion molecule 1 (ICAM-1), but not MHCII. ICAM-1 mobility and clustering are regulated by maturation-induced changes in the expression and activation of moesin and α-actinin-1, which associate with actin filaments and the ICAM-1 cytoplasmic domain. Constrained ICAM-1 mobility is important for DC function, as DCs expressing a high-mobility ICAM-1 mutant lacking the cytoplasmic domain exhibit diminished antigen-dependent conjugate formation and T cell priming. These defects are associated with inefficient induction of leukocyte functional antigen 1 (LFA-1) affinity maturation, which is consistent with a model in which constrained ICAM-1 mobility opposes forces on LFA-1 exerted by the T cell cytoskeleton, whereas ICAM-1 clustering enhances valency and further promotes ligand-dependent LFA-1 activation. Our results reveal an important new mechanism through which the DC cytoskeleton regulates receptor activation at the immunological synapse.
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Affiliation(s)
- William A Comrie
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19102
| | - Shuixing Li
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19102
| | - Sarah Boyle
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19102
| | - Janis K Burkhardt
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19102
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Comrie WA, Babich A, Burkhardt JK. F-actin flow drives affinity maturation and spatial organization of LFA-1 at the immunological synapse. ACTA ACUST UNITED AC 2015; 208:475-91. [PMID: 25666810 PMCID: PMC4332248 DOI: 10.1083/jcb.201406121] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The T cell actin network generates mechanical forces that regulate LFA-1 activity at the immunological synapse. Integrin-dependent interactions between T cells and antigen-presenting cells are vital for proper T cell activation, effector function, and memory. Regulation of integrin function occurs via conformational change, which modulates ligand affinity, and receptor clustering, which modulates valency. Here, we show that conformational intermediates of leukocyte functional antigen 1 (LFA-1) form a concentric array at the immunological synapse. Using an inhibitor cocktail to arrest F-actin dynamics, we show that organization of this array depends on F-actin flow and ligand mobility. Furthermore, F-actin flow is critical for maintaining the high affinity conformation of LFA-1, for increasing valency by recruiting LFA-1 to the immunological synapse, and ultimately for promoting intracellular cell adhesion molecule 1 (ICAM-1) binding. Finally, we show that F-actin forces are opposed by immobilized ICAM-1, which triggers LFA-1 activation through a combination of induced fit and tension-based mechanisms. Our data provide direct support for a model in which the T cell actin network generates mechanical forces that regulate LFA-1 activity at the immunological synapse.
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Affiliation(s)
- William A Comrie
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104
| | - Alexander Babich
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104
| | - Janis K Burkhardt
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104
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Rowan AG, Suemori K, Fujiwara H, Yasukawa M, Tanaka Y, Taylor GP, Bangham CRM. Cytotoxic T lymphocyte lysis of HTLV-1 infected cells is limited by weak HBZ protein expression, but non-specifically enhanced on induction of Tax expression. Retrovirology 2014; 11:116. [PMID: 25499803 PMCID: PMC4282740 DOI: 10.1186/s12977-014-0116-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Accepted: 11/27/2014] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Immunogenetic evidence indicates that cytotoxic T lymphocytes (CTLs) specific for the weak CTL antigen HBZ limit HTLV-1 proviral load in vivo, whereas there is no clear relationship between the proviral load and the frequency of CTLs specific for the immunodominant antigen Tax. In vivo, circulating HTLV-1-infected cells express HBZ mRNA in contrast, Tax expression is typically low or undetectable. To elucidate the virus-suppressing potential of CTLs targeting HBZ, we compared the ability of HBZ- and Tax-specific CTLs to lyse naturally-infected cells, by co-incubating HBZ- and Tax-specific CTL clones with primary CD4(+) T cells from HLA-matched HTLV-1-infected donors. We quantified lysis of infected cells, and tested whether specific virus-induced host cell surface molecules determine the susceptibility of infected cells to CTL-mediated lysis. RESULTS Primary infected cells upregulated HLA-A*02, ICAM-1, Fas and TRAIL-R1/2 in concert with Tax expression, forming efficient targets for both HTLV-1-specific CTLs and CTLs specific for an unrelated virus. We detected expression of HBZ mRNA (spliced isoform) in both Tax-expressing and non-expressing infected cells, and the HBZ26-34 epitope was processed and presented by cells transfected with an HBZ expression plasmid. However, when coincubated with primary cells, a high-avidity HBZ-specific CTL clone killed significantly fewer infected cells than were killed by a Tax-specific CTL clone. Finally, incubation with Tax- or HBZ-specific CTLs resulted in a significant decrease in the frequency of cells expressing high levels of HLA-A*02. CONCLUSIONS HTLV-1 gene expression in primary CD4(+) T cells non-specifically increases susceptibility to CTL lysis. Despite the presence of HBZ spliced-isoform mRNA, HBZ epitope presentation by primary cells is significantly less efficient than that of Tax.
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Affiliation(s)
- Aileen G Rowan
- Section of Virology, Department of Medicine, Imperial College London, London, W2 1PG, UK.
| | - Koichiro Suemori
- Department of Bioregulatory Medicine, Graduate School of Medicine, Ehime University, and Ehime University Proteomedicine Research Center, Toh-on city, Ehime, Japan.
| | - Hiroshi Fujiwara
- Department of Bioregulatory Medicine, Graduate School of Medicine, Ehime University, and Ehime University Proteomedicine Research Center, Toh-on city, Ehime, Japan.
| | - Masaki Yasukawa
- Department of Bioregulatory Medicine, Graduate School of Medicine, Ehime University, and Ehime University Proteomedicine Research Center, Toh-on city, Ehime, Japan.
| | - Yuetsu Tanaka
- Graduate School and Faculty of Medicine, University of the Ryukyus, Okinawa, Japan.
| | - Graham P Taylor
- Section of Virology, Department of Medicine, Imperial College London, London, W2 1PG, UK.
| | - Charles R M Bangham
- Section of Virology, Department of Medicine, Imperial College London, London, W2 1PG, UK.
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Wang D, Zeng Q, Song R, Ao L, Fullerton DA, Meng X. Ligation of ICAM-1 on human aortic valve interstitial cells induces the osteogenic response: A critical role of the Notch1-NF-κB pathway in BMP-2 expression. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:2744-53. [PMID: 25101972 DOI: 10.1016/j.bbamcr.2014.07.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 07/24/2014] [Accepted: 07/28/2014] [Indexed: 12/16/2022]
Abstract
Calcific aortic valve disease (CAVD) is a chronic inflammatory condition and affects a large number of elderly people. Aortic valve interstitial cells (AVICs) occupy an important role in valvular calcification and CAVD progression. While pro-inflammatory mechanisms are capable of inducing the osteogenic responses in AVICs, the molecular interaction between pro-inflammatory and pro-osteogenic mechanisms remains poorly understood. This study tested the hypothesis that intercellular adhesion molecule-1 (ICAM-1) plays a role in mediating pro-osteogenic factor expression in human AVICs. AVICs were isolated from normal human aortic valves and cultured in M199 medium. Treatment with leukocyte function-associated factor-1 (LFA-1, an ICAM-1 ligand) up-regulated the expression of bone morphogenetic protein-2 (BMP-2) and resulted in increased alkaline phosphatase activity and formation of calcification nodules. Pre-treatment with lipopolysaccharide (LPS, 0.05μg/ml) increased ICAM-1 levels on cell surfaces and exaggerated the pro-osteogenic response to LFA-1, and neutralization of ICAM-1 suppressed this response. Further, ligation of ICAM-1 by antibody cross-linking also up-regulated BMP-2 expression. Interestingly, LFA-1 elicited Notch1 cleavage and NF-κB activation. Inhibition of NF-κB markedly reduced LFA-1-induced BMP-2 expression, and inhibition of Notch1 cleavage with a γ-secretase inhibitor suppressed LFA-1-induced NF-κB activation and BMP-2 expression. Ligation of ICAM-1 on human AVICs activates the Notch1 pathway. Notch1 up-regulates BMP-2 expression in human AVICs through activation of NF-κB. The results demonstrate a novel role of ICAM-1 in translating a pro-inflammatory signal into a pro-osteogenic response in human AVICs and suggest that ICAM-1 on the surfaces of AVICs contributes to the mechanism of aortic valve calcification.
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Affiliation(s)
- Dong Wang
- Department of Surgery, University of Colorado Denver, Aurora, CO 80045, USA; Department of Anatomy, The Second Military Medical University, Shanghai, China
| | - Qingchun Zeng
- Department of Surgery, University of Colorado Denver, Aurora, CO 80045, USA; Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Rui Song
- Department of Surgery, University of Colorado Denver, Aurora, CO 80045, USA; Department of Pathophysiology, Southern Medical University, Guangzhou, China
| | - Lihua Ao
- Department of Surgery, University of Colorado Denver, Aurora, CO 80045, USA
| | - David A Fullerton
- Department of Surgery, University of Colorado Denver, Aurora, CO 80045, USA
| | - Xianzhong Meng
- Department of Surgery, University of Colorado Denver, Aurora, CO 80045, USA.
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Clayton KL, Haaland MS, Douglas-Vail MB, Mujib S, Chew GM, Ndhlovu LC, Ostrowski MA. T cell Ig and mucin domain-containing protein 3 is recruited to the immune synapse, disrupts stable synapse formation, and associates with receptor phosphatases. THE JOURNAL OF IMMUNOLOGY 2013; 192:782-91. [PMID: 24337741 DOI: 10.4049/jimmunol.1302663] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
CD8(+) CTLs are adept at killing virally infected cells and cancer cells and releasing cytokines (e.g., IFN-γ) to aid this response. However, during cancer and chronic viral infections, such as with HIV, this CTL response is progressively impaired due to a process called T cell exhaustion. Previous work has shown that the glycoprotein T cell Ig and mucin domain-containing protein 3 (Tim-3) plays a functional role in establishing T cell exhaustion. Tim-3 is highly upregulated on virus and tumor Ag-specific CD8(+) T cells, and antagonizing Tim-3 helps restore function of CD8(+) T cells. However, very little is known of how Tim-3 signals in CTLs. In this study, we assessed the role of Tim-3 at the immunological synapse as well as its interaction with proximal TCR signaling molecules in primary human CD8(+) T cells. Tim-3 was found within CD8(+) T cell lipid rafts at the immunological synapse. Blocking Tim-3 resulted in a significantly greater number of stable synapses being formed between Tim-3(hi)CD8(+) T cells and target cells, suggesting that Tim-3 plays a functional role in synapse formation. Further, we confirmed that Tim-3 interacts with Lck, but not the phospho-active form of Lck. Finally, Tim-3 colocalizes with receptor phosphatases CD45 and CD148, an interaction that is enhanced in the presence of the Tim-3 ligand, galectin-9. Thus, Tim-3 interacts with multiple signaling molecules at the immunological synapse, and characterizing these interactions could aid in the development of therapeutics to restore Tim-3-mediated immune dysfunction.
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Affiliation(s)
- Kiera L Clayton
- Department of Immunology, University of Toronto, Toronto, Ontario M5S 1A8, Canada
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CD25 and CD69 induction by α4β1 outside-in signalling requires TCR early signalling complex proteins. Biochem J 2013; 454:109-21. [PMID: 23758320 PMCID: PMC3749870 DOI: 10.1042/bj20130485] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Distinct signalling pathways producing diverse cellular outcomes can utilize similar subsets of proteins. For example, proteins from the TCR (T-cell receptor) ESC (early signalling complex) are also involved in interferon-α receptor signalling. Defining the mechanism for how these proteins function within a given pathway is important in understanding the integration and communication of signalling networks with one another. We investigated the contributions of the TCR ESC proteins Lck (lymphocyte-specific kinase), ZAP-70 (ζ-chain-associated protein of 70 kDa), Vav1, SLP-76 [SH2 (Src homology 2)-domain-containing leukocyte protein of 76 kDa] and LAT (linker for activation of T-cells) to integrin outside-in signalling in human T-cells. Lck, ZAP-70, SLP-76, Vav1 and LAT were activated by α4β1 outside-in signalling, but in a manner different from TCR signalling. TCR stimulation recruits ESC proteins to activate the mitogen-activated protein kinase ERK (extracellular-signal-regulated kinase). α4β1 outside-in-mediated ERK activation did not require TCR ESC proteins. However, α4β1 outside-in signalling induced CD25 and co-stimulated CD69 and this was dependent on TCR ESC proteins. TCR and α4β1 outside-in signalling are integrated through the common use of TCR ESC proteins; however, these proteins display functionally distinct roles in these pathways. These novel insights into the cross-talk between integrin outside-in and TCR signalling pathways are highly relevant to the development of therapeutic strategies to overcome disease associated with T-cell deregulation.
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Cheng HY, Wu R, Gebre AK, Hanna RN, Smith DJ, Parks JS, Ley K, Hedrick CC. Increased cholesterol content in gammadelta (γδ) T lymphocytes differentially regulates their activation. PLoS One 2013; 8:e63746. [PMID: 23704936 PMCID: PMC3660587 DOI: 10.1371/journal.pone.0063746] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Accepted: 04/04/2013] [Indexed: 11/18/2022] Open
Abstract
Gammadelta (γδ) T lymphocytes respond quickly upon antigen encounter to produce a cytokine response. In this study, we sought to understand how functions of γδ T cells are differentially regulated compared to αβ T cells. We found that cholesterol, an integral component of the plasma membrane and a regulator of TCR signaling, is increased in γδ T cells compared to αβ T cells, and modulates their function. Higher levels of activation markers, and increased lipid raft content in γδ cells suggest that γδ T cells are more activated. Cholesterol depletion effectively decreased lipid raft formation and activation of γδ T cells, indicating that increased cholesterol content contributes to the hyper-activated phenotype of γδ T cells, possibly through enhanced clustering of TCR signals in lipid rafts. TCR stimulation assays and western blotting revealed that instead of a lower TCR threshold, enhanced TCR signaling through ERK1/2 activation is likely the cause for high cholesterol-induced rapid activation and proliferation in γδ T cells. Our data indicate that cholesterol metabolism is differentially regulated in γδ T cells. The high intracellular cholesterol content leads to enhanced TCR signaling and increases activation and proliferation of γδ T cells.
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Affiliation(s)
- Hsin-Yuan Cheng
- Division of Inflammation Biology, La Jolla Institute for Allergy & Immunology, La Jolla, California, United States of America
| | - Runpei Wu
- Division of Inflammation Biology, La Jolla Institute for Allergy & Immunology, La Jolla, California, United States of America
| | - Abraham K. Gebre
- Department of Pathology/Lipid Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Richard N. Hanna
- Division of Inflammation Biology, La Jolla Institute for Allergy & Immunology, La Jolla, California, United States of America
| | - Dan J. Smith
- Targeson, Inc., San Diego, California, United States of America
| | - John S. Parks
- Department of Pathology/Lipid Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina, United States of America
| | - Klaus Ley
- Division of Inflammation Biology, La Jolla Institute for Allergy & Immunology, La Jolla, California, United States of America
| | - Catherine C. Hedrick
- Division of Inflammation Biology, La Jolla Institute for Allergy & Immunology, La Jolla, California, United States of America
- * E-mail:
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Robert P, Touchard D, Bongrand P, Pierres A. Biophysical description of multiple events contributing blood leukocyte arrest on endothelium. Front Immunol 2013; 4:108. [PMID: 23750158 PMCID: PMC3654224 DOI: 10.3389/fimmu.2013.00108] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Accepted: 04/26/2013] [Indexed: 12/16/2022] Open
Abstract
Blood leukocytes have a remarkable capacity to bind to and stop on specific blood vessel areas. Many studies have disclosed a key role of integrin structural changes following the interaction of rolling leukocytes with surface-bound chemoattractants. However, the functional significance of structural data and mechanisms of cell arrest are incompletely understood. Recent experiments revealed the unexpected complexity of several key steps of cell-surface interaction: (i) ligand-receptor binding requires a minimum amount of time to proceed and this is influenced by forces. (ii) Also, molecular interactions at interfaces are not fully accounted for by the interaction properties of soluble molecules. (iii) Cell arrest depends on nanoscale topography and mechanical properties of the cell membrane, and these properties are highly dynamic. Here, we summarize these results and we discuss their relevance to recent functional studies of integrin-receptor association in cells from a patient with type III leukocyte adhesion deficiency. It is concluded that an accurate understanding of all physical events listed in this review is needed to unravel the precise role of the multiple molecules and biochemical pathway involved in arrest triggering.
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Affiliation(s)
- Philippe Robert
- Laboratoire Adhésion and Inflammation, Aix-Marseille Université Marseille, France ; Institut National de la Santé et de la Recherche Médicale Marseille, France ; Centre National de la Recherche Scientifique Marseille, France ; Laboratoire d'Immunologie, Hôpitaux de Marseille, Hôpital de la Conception Marseille, France
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CD11a regulates effector CD8 T cell differentiation and central memory development in response to infection with Listeria monocytogenes. Infect Immun 2013; 81:1140-51. [PMID: 23357382 DOI: 10.1128/iai.00749-12] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
β2 (CD18) integrins with α-chains CD11a, -b, -c, and -d are important adhesion molecules necessary for leukocyte migration and cellular interactions. CD18 deficiency leads to recurrent bacterial infections and poor wound healing due to reduced migration of leukocytes to inflammatory sites. CD8 T cells also upregulate CD11a, CD11b, and CD11c upon activation. However, the role these molecules play for CD8 T cells in vivo is not known. To determine the function of individual β2 integrins, we examined CD8 T cell responses to Listeria monocytogenes infection in CD11a-, CD11b-, and CD11c-deficient mice. The absence of CD11b or CD11c had no effect on the generation of antigen-specific CD8 T cells. In contrast, the magnitude of the primary CD8 T cell response in CD11a-deficient mice was significantly reduced. Moreover, the response in CD11a(-/-) mice exhibited reduced differentiation of short-lived effector cells (KLRG1(hi) CD127(lo)), although cytokine and granzyme B production levels were unaffected. Notably, CD11a deficiency resulted in greatly enhanced generation of CD62L(+) central memory cells. Surprisingly, CD8 T cells lacking CD11a mounted a robust secondary response to infection. Taken together, these findings demonstrated that CD11a expression contributes to expansion and differentiation of primary CD8 T cells but may be dispensable for secondary responses to infection.
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Stephan MT, Stephan SB, Bak P, Chen J, Irvine DJ. Synapse-directed delivery of immunomodulators using T-cell-conjugated nanoparticles. Biomaterials 2012; 33:5776-87. [PMID: 22594972 DOI: 10.1016/j.biomaterials.2012.04.029] [Citation(s) in RCA: 146] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2012] [Accepted: 04/08/2012] [Indexed: 10/28/2022]
Abstract
Regulating molecular interactions in the T-cell synapse to prevent autoimmunity or, conversely, to boost anti-tumor immunity has long been a goal in immunotherapy. However, delivering therapeutically meaningful doses of immune-modulating compounds into the synapse represents a major challenge. Here, we report that covalent coupling of maleimide-functionlized nanoparticles (NPs) to free thiol groups on T-cell membrane proteins enables efficient delivery of compounds into the T-cell synapse. We demonstrate that surface-linked NPs are rapidly polarized toward the nascent immunological synapse (IS) at the T-cell/APC contact zone during antigen recognition. To translate these findings into a therapeutic application we tested the NP delivery of NSC-87877, a dual inhibitor of Shp1 and Shp2, key phosphatases that downregulate T-cell receptor activation in the synapse, in the context of adoptive T cell therapy of cancer. Conjugating NSC-87877-loaded NPs to the surface of tumor-specific T cells just prior to adoptive transfer into mice with advanced prostate cancer promoted a much greater T-cell expansion at the tumor site, relative to co-infusing the same drug dose systemically, leading to enhanced survival of treated animals. In summary, our studies support the application of T-cell-linked synthetic NPs as efficient drug delivery vehicles into the IS, as well as the broad applicability of this new paradigm for therapeutically modulating signaling events at the T-cell/APC interface.
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Affiliation(s)
- Matthias T Stephan
- Department of Material Science and Engineering, Massachusetts Institute of Technology-MIT, Cambridge, MA 02139, USA
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Interplay of polarity proteins and GTPases in T-lymphocyte function. Clin Dev Immunol 2012; 2012:417485. [PMID: 22461835 PMCID: PMC3296228 DOI: 10.1155/2012/417485] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Accepted: 12/13/2011] [Indexed: 01/16/2023]
Abstract
Polarity refers to the asymmetric distribution of different cellular components within a cell and is central to many cell functions. In T-cells, polarity regulates the activation, migration, and effector function of cytotoxic T-cells (CTLs) during an immune response. The regulation of asymmetric cell division by polarity proteins may also dictate CTL effector and memory differentiation following antigen presentation. Small GTPases, along with their associated polarity and adaptor proteins, are critical for mediating the polarity changes necessary for T-cell activation and function, and in turn, are regulated by guanine exchange factors (GEFS) and GTPase activating proteins (GAPS). For example, a novel GEF, dedicator of cytokinesis 8 (DOCK8) was recently identified as a regulator of immune cell function and mutations in DOCK8 have been detected in patients with severe combined immunodeficiency. Both B and T-cells from DOCK8 mutant mice form defective immunological synapses and have abnormal functions, in addition to impaired immune memory development. This paper will discuss the interplay between polarity proteins and GTPases, and their role in T-cell function.
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Kim JY, Kim DH, Kim JH, Lee D, Jeon HB, Kwon SJ, Kim SM, Yoo YJ, Lee EH, Choi SJ, Seo SW, Lee JI, Na DL, Yang YS, Oh W, Chang JW. Soluble intracellular adhesion molecule-1 secreted by human umbilical cord blood-derived mesenchymal stem cell reduces amyloid-β plaques. Cell Death Differ 2011; 19:680-91. [PMID: 22015609 PMCID: PMC3307982 DOI: 10.1038/cdd.2011.140] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Presently, co-culture of human umbilical cord blood mesenchymal stem cells (hUCB-MSCs) with BV2 microglia under amyloid-β42 (Aβ42) exposure induced a reduction of Aβ42 in the medium as well as an overexpression of the Aβ-degrading enzyme neprilysin (NEP) in microglia. Cytokine array examinations of co-cultured media revealed elevated release of soluble intracellular adhesion molecule-1 (sICAM-1) from hUCB-MSCs. Administration of human recombinant ICAM-1 in BV2 cells and wild-type mice brains induced NEP expression in time- and dose-dependent manners. In co-culturing with BV2 cells under Aβ42 exposure, knockdown of ICAM-1 expression on hUCB-MSCs by small interfering RNA (siRNA) abolished the induction of NEP in BV2 cells as well as reduction of added Aβ42 in the co-cultured media. By contrast, siRNA-mediated inhibition of the sICAM-1 receptor, lymphocyte function-associated antigen-1 (LFA-1), on BV2 cells reduced NEP expression by ICAM-1 exposure. When hUCB-MSCs were transplanted into the hippocampus of a 10-month-old transgenic mouse model of Alzheimer's disease for 10, 20, or 40 days, NEP expression was increased in the mice brains. Moreover, Aβ42 plaques in the hippocampus and other regions were decreased by active migration of hUCB-MSCs toward Aβ deposits. These data suggest that hUCB-MSC-derived sICAM-1 decreases Aβ plaques by inducing NEP expression in microglia through the sICAM-1/LFA-1 signaling pathway.
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Affiliation(s)
- J-Y Kim
- Biomedical Research Institute, MEDIPOST Co. Ltd., Seoul 137-874, Republic of Korea
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van der Aar AMG, de Groot R, Sanchez-Hernandez M, Taanman EWM, van Lier RAW, Teunissen MBM, de Jong EC, Kapsenberg ML. Cutting edge: virus selectively primes human langerhans cells for CD70 expression promoting CD8+ T cell responses. THE JOURNAL OF IMMUNOLOGY 2011; 187:3488-92. [PMID: 21880979 DOI: 10.4049/jimmunol.1101105] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The two outermost compartments of skin are populated by different Ag-presenting dendritic cell types. Epidermal Langerhans cells (LCs) are evolutionarily adapted to the continuous presence of harmless skin commensals by the selective lack of cell surface TLRs that sense bacteria. In this article, we analyze the ability of LCs and dermal dendritic cells (DDCs) to respond to virus infection. Live virus and intracellular TLR3-agonist dsRNA commit LCs more effectively than DDCs to stimulate naive CD8(+) T cell expansion and their differentiation into effector cells. This potent CD8(+) T cell-promoting capacity of LCs is causally related to high levels of virus-induced CD70 expression but not to IL-12 production. These data suggest a remarkable specialization of LCs in the induction of pathogen class-specific adaptive immunity. Whereas LCs ignore bacteria, they are superior to DDCs to initiate effective CD70-mediated CD8(+) T cells in response to virus stimulation.
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Affiliation(s)
- Angelic M G van der Aar
- Department of Cell Biology and Histology, Academic Medical Center, University of Amsterdam, 1105-AZ Amsterdam, The Netherlands
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Lovastatin inhibits T-cell proliferation while preserving the cytolytic function of EBV, CMV, and MART-1-specific CTLs. J Immunother 2011; 33:975-82. [PMID: 20948439 DOI: 10.1097/cji.0b013e3181fb0486] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Statin treatment has been shown to reduce graft-versus-host disease while preserving graft-versus-tumor effect in allogeneic stem cell transplantation. Herein, we investigated whether lovastatin treatment affects the function of human cytolytic T lymphocytes (CTLs). Upon T-cell receptor stimulation, lovastatin significantly inhibited the proliferation of both CD4+ and CD8+ T cells from healthy donors whereas their intracellular cytokine production including interferon-γ and tumor necrosis factor-α remained the same with a slight decrease of interleukin-2. Moreover, the specific lysis of target cells by CTL lines derived from patients and normal donors specific for Epstein-Barr virus-encoded antigen latent membrane protein-2 or cytomegalovirus-encoded antigen pp65 was uncompromised in the presence of lovastatin. In addition, we evaluated the effect of lovastatin on the proliferation and effector function of the CD8+ tumor-infiltrating lymphocytes (TILs) derived from melanoma patients specific for MART-1 antigen. Lovastatin significantly reduced the expansion of antigen-specific TILs upon MART-1 stimulation. However, the effector function of TILs, including the specific lysis of target cells and secretion of cytokine interferon-γ, remained intact with lovastatin treatment. Taken together, these data demonstrated that lovastatin inhibits the proliferation of Epstein-Barr virus, cytomegalovirus, and MART-1-specific CTLs without affecting cytolytic capacity. The differential effect of lovastatin on the proliferation versus cytotoxicity of CTLs might shed some light on elucidating the possible mechanisms of graft-versus-host disease and graft-versus-tumor effect elicited by alloimmune responses.
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Robert P, Canault M, Farnarier C, Nurden A, Grosdidier C, Barlogis V, Bongrand P, Pierres A, Chambost H, Alessi MC. A novel leukocyte adhesion deficiency III variant: kindlin-3 deficiency results in integrin- and nonintegrin-related defects in different steps of leukocyte adhesion. THE JOURNAL OF IMMUNOLOGY 2011; 186:5273-83. [PMID: 21441448 DOI: 10.4049/jimmunol.1003141] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Leukocyte adhesion deficiency type III is a recently described condition involving a Glanzmann-type bleeding syndrome and leukocyte adhesion deficiency. This was ascribed to a defect of the FERMT3 gene resulting in abnormal expression of kindlin-3, a protein expressed in hematopoietic cells with a major role in the regulation of integrin activation. In this article, we describe a patient with a new mutation of FERMT3 and lack of kindlin-3 expression in platelets and leukocytes. We assayed quantitatively the first steps of kindlin-3-defective leukocyte adhesion, namely, initial bond formation, bond strengthening, and early spreading. Initial bond formation was readily stimulated with neutrophils stimulated by fMLF, and neutrophils and lymphocytes stimulated by a phorbol ester or Mn(2+). In contrast, attachment strengthening was defective in the patient's lymphocytes treated with PMA or Mn(2+), or fMLF-stimulated neutrophils. However, attachment strengthening was normal in patient's neutrophils treated with phorbol ester or Mn(2+). In addition, the patient's T lymphocytes displayed defective integrin-mediated spreading and a moderate but significant decrease of spreading on anti-CD3-coated surfaces. Patient's neutrophils displayed a drastic alteration of integrin-mediated spreading after fMLF or PMA stimulation, whereas signaling-independent Mn(2+) allowed significant spreading. In conclusion, the consequences of kindlin-3 deficiency on β(2) integrin function depend on both cell type and the stimulus used for integrin activation. Our results suggest looking for a possible kindlin-3 involvement in membrane dynamical event independent of integrin-mediated adhesion.
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Affiliation(s)
- Philippe Robert
- Laboratoire d'Immunologie, Hôpital de la Conception, Assistance Publique-Hôpitaux de Marseille, 13385 Marseille Cedex 05, France
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Floc'h AL, Jalil A, Franciszkiewicz K, Validire P, Vergnon I, Mami-Chouaib F. Minimal Engagement of CD103 on Cytotoxic T Lymphocytes with an E-Cadherin-Fc Molecule Triggers Lytic Granule Polarization via a Phospholipase Cγ–Dependent Pathway. Cancer Res 2011; 71:328-38. [DOI: 10.1158/0008-5472.can-10-2457] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Efalizumab modulates T cell function both in vivo and in vitro. J Dermatol Sci 2010; 60:159-66. [DOI: 10.1016/j.jdermsci.2010.10.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2010] [Revised: 09/30/2010] [Accepted: 10/01/2010] [Indexed: 01/13/2023]
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50
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Xu S, Chen J, Wang F, Kang X, Lan T, Wang F, Li Z, Qi Z, Xing J. Arsenic trioxide combined with co-stimulatory molecule blockade prolongs survival of cardiac allografts in alloantigen-primed mice. Transpl Immunol 2010; 24:57-63. [DOI: 10.1016/j.trim.2010.07.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 07/23/2010] [Accepted: 07/25/2010] [Indexed: 01/08/2023]
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