1
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Rogers J, Bajur AT, Salaita K, Spillane KM. Mechanical control of antigen detection and discrimination by T and B cell receptors. Biophys J 2024:S0006-3495(24)00347-3. [PMID: 38794795 DOI: 10.1016/j.bpj.2024.05.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 05/10/2024] [Accepted: 05/21/2024] [Indexed: 05/26/2024] Open
Abstract
The adaptive immune response is orchestrated by just two cell types, T cells and B cells. Both cells possess the remarkable ability to recognize virtually any antigen through their respective antigen receptors-the T cell receptor (TCR) and B cell receptor (BCR). Despite extensive investigations into the biochemical signaling events triggered by antigen recognition in these cells, our ability to predict or control the outcome of T and B cell activation remains elusive. This challenge is compounded by the sensitivity of T and B cells to the biophysical properties of antigens and the cells presenting them-a phenomenon we are just beginning to understand. Recent insights underscore the central role of mechanical forces in this process, governing the conformation, signaling activity, and spatial organization of TCRs and BCRs within the cell membrane, ultimately eliciting distinct cellular responses. Traditionally, T cells and B cells have been studied independently, with researchers working in parallel to decipher the mechanisms of activation. While these investigations have unveiled many overlaps in how these cell types sense and respond to antigens, notable differences exist. To fully grasp their biology and harness it for therapeutic purposes, these distinctions must be considered. This review compares and contrasts the TCR and BCR, placing emphasis on the role of mechanical force in regulating the activity of both receptors to shape cellular and humoral adaptive immune responses.
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Affiliation(s)
- Jhordan Rogers
- Department of Chemistry, Emory University, Atlanta, Georgia
| | - Anna T Bajur
- Department of Physics, King's College London, London, United Kingdom; Randall Centre for Cell and Molecular Biophysics, King's College London, London, United Kingdom
| | - Khalid Salaita
- Department of Chemistry, Emory University, Atlanta, Georgia; Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia.
| | - Katelyn M Spillane
- Department of Physics, King's College London, London, United Kingdom; Randall Centre for Cell and Molecular Biophysics, King's College London, London, United Kingdom; Department of Life Sciences, Imperial College London, London, United Kingdom.
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2
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Pagadala M, Sears TJ, Wu VH, Pérez-Guijarro E, Kim H, Castro A, Talwar JV, Gonzalez-Colin C, Cao S, Schmiedel BJ, Goudarzi S, Kirani D, Au J, Zhang T, Landi T, Salem RM, Morris GP, Harismendy O, Patel SP, Alexandrov LB, Mesirov JP, Zanetti M, Day CP, Fan CC, Thompson WK, Merlino G, Gutkind JS, Vijayanand P, Carter H. Germline modifiers of the tumor immune microenvironment implicate drivers of cancer risk and immunotherapy response. Nat Commun 2023; 14:2744. [PMID: 37173324 PMCID: PMC10182072 DOI: 10.1038/s41467-023-38271-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
With the continued promise of immunotherapy for treating cancer, understanding how host genetics contributes to the tumor immune microenvironment (TIME) is essential to tailoring cancer screening and treatment strategies. Here, we study 1084 eQTLs affecting the TIME found through analysis of The Cancer Genome Atlas and literature curation. These TIME eQTLs are enriched in areas of active transcription, and associate with gene expression in specific immune cell subsets, such as macrophages and dendritic cells. Polygenic score models built with TIME eQTLs reproducibly stratify cancer risk, survival and immune checkpoint blockade (ICB) response across independent cohorts. To assess whether an eQTL-informed approach could reveal potential cancer immunotherapy targets, we inhibit CTSS, a gene implicated by cancer risk and ICB response-associated polygenic models; CTSS inhibition results in slowed tumor growth and extended survival in vivo. These results validate the potential of integrating germline variation and TIME characteristics for uncovering potential targets for immunotherapy.
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Affiliation(s)
- Meghana Pagadala
- Biomedical Sciences Program, University of California San Diego, La Jolla, CA, 92093, USA
| | - Timothy J Sears
- Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA, 92093, USA
| | - Victoria H Wu
- Department of Pharmacology, UCSD Moores Cancer Center, La Jolla, CA, 92093, USA
| | - Eva Pérez-Guijarro
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Hyo Kim
- Undergraduate Bioengineering Program, Jacobs School of Engineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Andrea Castro
- Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA, 92093, USA
| | - James V Talwar
- Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA, 92093, USA
| | | | - Steven Cao
- Division of Epidemiology, Herbert Wertheim School of Public Health and Human Longevity Science, University of California San Diego, La Jolla, CA, 92093, USA
| | | | | | - Divya Kirani
- Undergraduate Biology and Bioinformatics Program, University of California San Diego, La Jolla, CA, 92093, USA
| | - Jessica Au
- Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA, 92093, USA
| | - Tongwu Zhang
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Teresa Landi
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Rany M Salem
- Division of Epidemiology, Herbert Wertheim School of Public Health and Human Longevity Science, University of California San Diego, La Jolla, CA, 92093, USA
| | - Gerald P Morris
- Department of Pathology, University of California San Diego, La Jolla, CA, 92093, USA
| | - Olivier Harismendy
- Bioinformatics and Systems Biology Program, University of California San Diego, La Jolla, CA, 92093, USA
- Division of Biomedical Informatics, Department of Medicine, University of California San Diego School of Medicine, La Jolla, CA, 92093, USA
| | - Sandip Pravin Patel
- Center for Personalized Cancer Therapy, Division of Hematology and Oncology, UC San Diego Moores Cancer Center, San Diego, CA, 92037, USA
| | - Ludmil B Alexandrov
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA, 92093, USA
- Department of Bioengineering, University of California San Diego, La Jolla, CA, 92093, USA
| | - Jill P Mesirov
- Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA
- Department of Medicine, Division of Medical Genetics, University of California San Diego, La Jolla, CA, 92093, USA
| | - Maurizio Zanetti
- Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA
- The Laboratory of Immunology and Department of Medicine, University of California San Diego, La Jolla, CA, 92093, USA
| | - Chi-Ping Day
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Chun Chieh Fan
- Center for Population Neuroscience and Genetics, Laureate Institute for Brain Research, Tulsa, OK, 74136, USA
- Department of Radiology, University of California San Diego, La Jolla, CA, 92093, USA
| | - Wesley K Thompson
- Division of Biostatistics, Herbert Wertheim School of Public Health and Human Longevity Science, University of California San Diego, La Jolla, CA, 92093, USA
| | - Glenn Merlino
- Laboratory of Cancer Biology and Genetics, National Cancer Institute, National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - J Silvio Gutkind
- Department of Pharmacology, UCSD Moores Cancer Center, La Jolla, CA, 92093, USA
| | | | - Hannah Carter
- Moores Cancer Center, University of California San Diego, La Jolla, CA, 92093, USA.
- Department of Medicine, Division of Medical Genetics, University of California San Diego, La Jolla, CA, 92093, USA.
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3
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Ide H, Aoshi T, Saito M, Espulgar WV, Briones JC, Hosokawa M, Matsunaga H, Arikawa K, Takeyama H, Koyama S, Takamatsu H, Tamiya E. Linking antigen specific T-cell dynamics in a microfluidic chip to single cell transcription patterns. Biochem Biophys Res Commun 2023; 657:8-15. [PMID: 36963175 DOI: 10.1016/j.bbrc.2023.03.035] [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: 02/24/2023] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023]
Abstract
A new non-invasive screening profile has been realized that can aid in determining T-cell activation state at single-cell level. Production of activated T-cells with good specificity and stable proliferation is greatly beneficial for advancing adoptive immunotherapy as innate immunological cells are not effective in recognizing and eliminating cancer as expected. The screening method is realized by relating intracellular Ca2+ intensity and motility of T-cells interacting with APC (Antigen Presenting Cells) in a microfluidic chip. The system is tested using APC pulsed with OVA257-264 peptide and its modified affinities (N4, Q4, T4 and V4), and the T-cells from OT-1 mice. In addition, single cell RNA sequencing reveals the activation states of the cells and the clusters from the derived profiles can be indicative of the T-cell activation state. The presented system here can be versatile for a comprehensive application to proceed with T-cell-based immunotherapy and screen the antigen-specific T-cells with excellent efficiency and high proliferation.
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Affiliation(s)
- Hiroki Ide
- Graduate School of Engineering Osaka Univ, Japan; PhotoBIO Lab, AIST-Osaka Univ, Japan
| | - Taiki Aoshi
- Research Institute for Microbial Diseases, Osaka Univ, Japan
| | - Masato Saito
- PhotoBIO Lab, AIST-Osaka Univ, Japan; Life and Medical Photonics Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan.
| | | | - Jonathan Campos Briones
- Life and Medical Photonics Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka, Japan
| | - Masahito Hosokawa
- Department of Life Science and Medical Bioscience, Waseda Univ, Japan; CBBD-OIL, AIST-Waseda Univ, Japan; Institute for Advanced Research of Biosystem Dynamics, Waseda Research Institute for Science and Engineering, Waseda Univ, Japan; Research Organization for Nano and Life Innovation, Waseda Univ, Japan
| | - Hiroko Matsunaga
- Research Organization for Nano and Life Innovation, Waseda Univ, Japan
| | - Koji Arikawa
- Research Organization for Nano and Life Innovation, Waseda Univ, Japan
| | - Haruko Takeyama
- Department of Life Science and Medical Bioscience, Waseda Univ, Japan; CBBD-OIL, AIST-Waseda Univ, Japan; Institute for Advanced Research of Biosystem Dynamics, Waseda Research Institute for Science and Engineering, Waseda Univ, Japan; Research Organization for Nano and Life Innovation, Waseda Univ, Japan
| | | | | | - Eiichi Tamiya
- PhotoBIO Lab, AIST-Osaka Univ, Japan; Institute of Scientific and Industrial Research, Osaka University, Japan
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4
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Tavasolian F, Pastrello C, Ahmed Z, Jurisica I, Inman RD. Vesicular traffic-mediated cell-to-cell signaling at the immune synapse in Ankylosing Spondylitis. Front Immunol 2023; 13:1102405. [PMID: 36741392 PMCID: PMC9889860 DOI: 10.3389/fimmu.2022.1102405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/21/2022] [Indexed: 01/19/2023] Open
Abstract
The chronic inflammatory disease ankylosing spondylitis (AS) is marked by back discomfort, spinal ankylosis, and extra-articular symptoms. In AS, inflammation is responsible for both pain and spinal ankylosis. However, the processes that sustain chronic inflammation remain unknown. Despite the years of research conducted to decipher the intricacy of AS, little progress has been made in identifying the signaling events that lead to the development of this disease. T cells, an immune cell type that initiates and regulates the body's response to infection, have been established to substantially impact the development of AS. T lymphocytes are regarded as a crucial part of adaptive immunity for the control of the immune system. A highly coordinated interaction involving antigen-presenting cells (APCs) and T cells that regulate T cell activation constitutes an immunological synapse (IS). This first phase leads to the controlled trafficking of receptors and signaling mediators involved in folding endosomes to the cellular interface, which allows the transfer of information from T cells to APCs through IS formation. Discrimination of self and nonself antigen is somatically learned in adaptive immunity. In an autoimmune condition such as AS, there is a disturbance of self/nonself antigen discrimination; available findings imply that the IS plays a preeminent role in the adaptive immune response. In this paper, we provide insights into the genesis of AS by evaluating recent developments in the function of vesicular trafficking in IS formation and the targeted release of exosomes enriched microRNAs (miRNA) at the synaptic region in T cells.
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Affiliation(s)
- Fataneh Tavasolian
- Spondylitis Program, Division of Rheumatology, Schroeder Arthritis Institute, University Health Network, Toronto, ON, Canada
| | - Chiara Pastrello
- Osteoarthritis Research Program, Division of Orthopedic Surgery, Schroeder Arthritis Institute, and Data Science Discovery Centre for Chronic Diseases, Krembil Research Institute, University Health Network, Toronto, ON, Canada
| | - Zuhaib Ahmed
- Osteoarthritis Research Program, Division of Orthopedic Surgery, Schroeder Arthritis Institute, and Data Science Discovery Centre for Chronic Diseases, Krembil Research Institute, University Health Network, Toronto, ON, Canada
| | - Igor Jurisica
- Osteoarthritis Research Program, Division of Orthopedic Surgery, Schroeder Arthritis Institute, and Data Science Discovery Centre for Chronic Diseases, Krembil Research Institute, University Health Network, Toronto, ON, Canada,Departments of Medical Biophysics and Computer Science, and the Faculty of Dentistry, University of Toronto, Toronto, ON, Canada,Institute of Neuroimmunology, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Robert D. Inman
- Spondylitis Program, Division of Rheumatology, Schroeder Arthritis Institute, University Health Network, Toronto, ON, Canada,Krembil Research Institute, University Health Network, Toronto, ON, Canada,Departments of Medicine and Immunology, University of Toronto, Toronto, ON, Canada,*Correspondence: Robert D. Inman,
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Gómez-Morón A, Requena S, Roda-Navarro P, Martín-Cófreces NB. Activation kinetics of regulatory molecules during immunological synapse in T cells. Methods Cell Biol 2023. [PMID: 37516524 DOI: 10.1016/bs.mcb.2022.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
T cell activation through TCR stimulation leads to the formation of the immunological synapse (IS), a specialized adhesion organized between T lymphocytes and antigen presenting cells (APCs) in which a dynamic interaction among signaling molecules, the cytoskeleton and intracellular organelles achieves proper antigen-mediated stimulation and effector function. The kinetics of molecular reactions at the IS is essential to determine the quality of the response to the antigen stimulation. Herein, we describe methods based on biochemistry, flow cytometry and imaging in live and fixed cells to study the activation state and dynamics of regulatory molecules at the IS in the Jurkat T cell line CH7C17 and primary human and mouse CD4+ T lymphocytes stimulated by antigen presented by Raji and HOM2 B cell lines and human and mouse dendritic cells.
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Onnis A, Andreano E, Cassioli C, Finetti F, Della Bella C, Staufer O, Pantano E, Abbiento V, Marotta G, D’Elios MM, Rappuoli R, Baldari CT. SARS-CoV-2 Spike protein suppresses CTL-mediated killing by inhibiting immune synapse assembly. J Exp Med 2022; 220:213689. [PMID: 36378226 PMCID: PMC9671159 DOI: 10.1084/jem.20220906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/28/2022] [Accepted: 11/02/2022] [Indexed: 11/16/2022] Open
Abstract
CTL-mediated killing of virally infected or malignant cells is orchestrated at the immune synapse (IS). We hypothesized that SARS-CoV-2 may target lytic IS assembly to escape elimination. We show that human CD8+ T cells upregulate the expression of ACE2, the Spike receptor, during differentiation to CTLs. CTL preincubation with the Wuhan or Omicron Spike variants inhibits IS assembly and function, as shown by defective synaptic accumulation of TCRs and tyrosine phosphoproteins as well as defective centrosome and lytic granule polarization to the IS, resulting in impaired target cell killing and cytokine production. These defects were reversed by anti-Spike antibodies interfering with ACE2 binding and reproduced by ACE2 engagement by angiotensin II or anti-ACE2 antibodies, but not by the ACE2 product Ang (1-7). IS defects were also observed ex vivo in CTLs from COVID-19 patients. These results highlight a new strategy of immune evasion by SARS-CoV-2 based on the Spike-dependent, ACE2-mediated targeting of the lytic IS to prevent elimination of infected cells.
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Affiliation(s)
- Anna Onnis
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Emanuele Andreano
- Monoclonal Antibody Discovery Lab, Fondazione Toscana Life Sciences, Siena, Italy
| | - Chiara Cassioli
- Department of Life Sciences, University of Siena, Siena, Italy
| | | | - Chiara Della Bella
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Oskar Staufer
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Science, University of Oxford, Oxford, UK
| | - Elisa Pantano
- Monoclonal Antibody Discovery Lab, Fondazione Toscana Life Sciences, Siena, Italy
| | - Valentina Abbiento
- Monoclonal Antibody Discovery Lab, Fondazione Toscana Life Sciences, Siena, Italy
| | | | - Mario Milco D’Elios
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | - Rino Rappuoli
- Monoclonal Antibody Discovery Lab, Fondazione Toscana Life Sciences, Siena, Italy,Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Siena, Italy
| | - Cosima T. Baldari
- Department of Life Sciences, University of Siena, Siena, Italy,Correspondence to Cosima T. Baldari:
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De Souza MM, Koltes DA, Beiki H, Sales MA, Tsai T, Maxwell CV, Zhao J, Koltes JE. Early-Life Exposure of Pigs to Topsoil Alters miRNA and mRNA Expression in Peripheral Blood Mononuclear Cells. Front Genet 2022; 13:886875. [PMID: 36081988 PMCID: PMC9445269 DOI: 10.3389/fgene.2022.886875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 06/23/2022] [Indexed: 11/13/2022] Open
Abstract
Exposure to less-hygienic conditions during early childhood has been associated with stimulation and development of the immune system. A recent study indicated that exposure of piglets to soil-borne microbes during lactation was related with modulation of gut microbiota and immune function. To identify the potential molecular mechanisms and pathways impacted by early-life topsoil exposure, we analyzed the messenger RNA (mRNA) and micro-RNA (miRNA) expression in peripheral blood mononuclear cells (PBMCs) from these piglets. Total RNA was extracted from the PBMCs of piglets exposed to topsoil only from d 4–d 21 of life (mRNA n = 6; miRNA n = 5) or unexposed control pigs (mRNA n = 6; miRNA n = 8) at 11, 20, and 56 days of age. Small RNA and mRNA were sequenced with 50-bp single-end reads using Illumina chemistry. Sequence data were quality checked with FASTQC software and aligned to the Sscrofa 11.1 genome with the STAR aligner for mRNA and mirDeep2 for miRNA. Differential expression (DE) analysis was performed using PROC Glimmix of SAS to evaluate changes in expression due to topsoil exposure over time with genes declared DE at a false discovery rate (FDR) of q < 0.10. A total of 138 mRNA and 21 miRNAs were identified as DE for the treatment by age interaction. Ontology enrichment analysis of DE mRNA revealed Gene ontology (GO) terms directly involved in the connection between T-cell and antigen-presenting cells that are associated with T-cell activation. Key regulatory genes identified include PTPRJ, ITGB3, TRBV30, CD3D, mir-143, mir-29, and mir-148a. While these results require validation, this study provides data supporting the hypothesis that less-hygienic environments during early life may contribute to the development of the immune system.
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Affiliation(s)
- M. M. De Souza
- Department of Animal Science, Iowa State University, Ames, IA, United States
| | - D. A. Koltes
- Department of Animal Science, Iowa State University, Ames, IA, United States
| | - H. Beiki
- Department of Animal Science, Iowa State University, Ames, IA, United States
| | - M. A. Sales
- Department of Animal Science, University of Arkansas-Division of Agriculture, Fayetteville, AR, United States
| | - T. Tsai
- Department of Animal Science, University of Arkansas-Division of Agriculture, Fayetteville, AR, United States
| | - C. V. Maxwell
- Department of Animal Science, University of Arkansas-Division of Agriculture, Fayetteville, AR, United States
| | - J. Zhao
- Department of Animal Science, University of Arkansas-Division of Agriculture, Fayetteville, AR, United States
| | - J. E. Koltes
- Department of Animal Science, Iowa State University, Ames, IA, United States
- *Correspondence: J. E. Koltes,
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Capitani N, Baldari CT. The Immunological Synapse: An Emerging Target for Immune Evasion by Bacterial Pathogens. Front Immunol 2022; 13:943344. [PMID: 35911720 PMCID: PMC9325968 DOI: 10.3389/fimmu.2022.943344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/20/2022] [Indexed: 11/13/2022] Open
Abstract
Similar to other pathogens, bacteria have developed during their evolution a variety of mechanisms to overcome both innate and acquired immunity, accounting for their ability to cause disease or chronic infections. The mechanisms exploited for this critical function act by targeting conserved structures or pathways that regulate the host immune response. A strategic potential target is the immunological synapse (IS), a highly specialized structure that forms at the interface between antigen presenting cells (APC) and T lymphocytes and is required for the establishment of an effective T cell response to the infectious agent and for the development of long-lasting T cell memory. While a variety of bacterial pathogens are known to impair or subvert cellular processes essential for antigen processing and presentation, on which IS assembly depends, it is only recently that the possibility that IS may be a direct target of bacterial virulence factors has been considered. Emerging evidence strongly supports this notion, highlighting IS targeting as a powerful, novel means of immune evasion by bacterial pathogens. In this review we will present a brief overview of the mechanisms used by bacteria to affect IS assembly by targeting APCs. We will then summarize what has emerged from the current handful of studies that have addressed the direct impact of bacterial virulence factors on IS assembly in T cells and, based on the strategic cellular processes targeted by these factors in other cell types, highlight potential IS-related vulnerabilities that could be exploited by these pathogens to evade T cell mediated immunity.
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Affiliation(s)
- Nagaja Capitani
- Department of Life Sciences, University of Siena, Siena, Italy
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9
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Amo L, Díez-García J, Tamayo-Orbegozo E, Maruri N, Larrucea S. Podocalyxin Expressed in Antigen Presenting Cells Promotes Interaction With T Cells and Alters Centrosome Translocation to the Contact Site. Front Immunol 2022; 13:835527. [PMID: 35711462 PMCID: PMC9197222 DOI: 10.3389/fimmu.2022.835527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 05/02/2022] [Indexed: 11/25/2022] Open
Abstract
Podocalyxin (PODXL), a cell surface sialomucin expressed in diverse types of normal and malignant cells, mediates cellular adhesion to extracellular matrix and cell-to-cell interaction. A previous study reported the expression of PODXL protein on monocytes undergoing macrophage differentiation, yet the expression of this molecule in other antigen presenting cells (APCs) and its function in the immune system still remain undetermined. In this study, we report that PODXL is expressed in human monocyte-derived immature dendritic cells at both the mRNA and protein levels. Following dendritric cells maturation using pro-inflammatory stimuli, PODXL expression level decreased substantially. Furthermore, we found that PODXL expression is positively regulated by IL-4 through MEK/ERK and JAK3/STAT6 signaling pathways. Our results revealed a polarized distribution of PODXL during the interaction of APCs with CD4+ T cells, partially colocalizing with F-actin. Notably, PODXL overexpression in APCs promoted their interaction with CD4+ T cells and CD8+ T cells and decreased the expression of MHC-I, MHC-II, and the costimulatory molecule CD86. In addition, PODXL reduced the translocation of CD4+ T-cell centrosome toward the APC-contact site. These findings suggest a regulatory role for PODXL expressed by APCs in immune responses, thus representing a potential target for therapeutic blockade in infection and cancer.
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Affiliation(s)
- Laura Amo
- Regulation of the Immune System Group, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Javier Díez-García
- Microscopy Facility, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Estíbaliz Tamayo-Orbegozo
- Regulation of the Immune System Group, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Natalia Maruri
- Regulation of the Immune System Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
| | - Susana Larrucea
- Regulation of the Immune System Group, Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
- *Correspondence: Susana Larrucea,
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10
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Maliekal TT, Dharmapal D, Sengupta S. Tubulin Isotypes: Emerging Roles in Defining Cancer Stem Cell Niche. Front Immunol 2022; 13:876278. [PMID: 35693789 PMCID: PMC9179084 DOI: 10.3389/fimmu.2022.876278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/05/2022] [Indexed: 11/13/2022] Open
Abstract
Although the role of microtubule dynamics in cancer progression is well-established, the roles of tubulin isotypes, their cargos and their specific function in the induction and sustenance of cancer stem cells (CSCs) were poorly explored. But emerging reports urge to focus on the transport function of tubulin isotypes in defining orchestrated expression of functionally critical molecules in establishing a stem cell niche, which is the key for CSC regulation. In this review, we summarize the role of specific tubulin isotypes in the transport of functional molecules that regulate metabolic reprogramming, which leads to the induction of CSCs and immune evasion. Recently, the surface expression of GLUT1 and GRP78 as well as voltage-dependent anion channel (VDAC) permeability, regulated by specific isotypes of β-tubulins have been shown to impart CSC properties to cancer cells, by implementing a metabolic reprogramming. Moreover, βIVb tubulin is shown to be critical in modulating EphrinB1signaling to sustain CSCs in oral carcinoma. These tubulin-interacting molecules, Ephrins, GLUT1 and GRP78, are also important regulators of immune evasion, by evoking PD-L1 mediated T-cell suppression. Thus, the recent advances in the field implicate that tubulins play a role in the controlled transport of molecules involved in CSC niche. The indication of tubulin isotypes in the regulation of CSCs offers a strategy to specifically target those tubulin isotypes to eliminate CSCs, rather than the general inhibition of microtubules, which usually leads to therapy resistance.
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Affiliation(s)
- Tessy Thomas Maliekal
- Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
- Regional Centre for Biotechnology, Faridabad, India
- *Correspondence: Tessy Thomas Maliekal, ; Suparna Sengupta,
| | - Dhrishya Dharmapal
- Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
- University of Kerala, Department of Biotechnology, Thiruvananthapuram, India
| | - Suparna Sengupta
- Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
- Regional Centre for Biotechnology, Faridabad, India
- University of Kerala, Department of Biotechnology, Thiruvananthapuram, India
- *Correspondence: Tessy Thomas Maliekal, ; Suparna Sengupta,
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11
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Arve-Butler S, Mossberg A, Schmidt T, Welinder C, Yan H, Berthold E, Król P, Kahn R. Neutrophils Lose the Capacity to Suppress T Cell Proliferation Upon Migration Towards Inflamed Joints in Juvenile Idiopathic Arthritis. Front Immunol 2022; 12:795260. [PMID: 35095871 PMCID: PMC8792960 DOI: 10.3389/fimmu.2021.795260] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/23/2021] [Indexed: 02/03/2023] Open
Abstract
Neutrophils are highly abundant in synovial fluid of rheumatic inflamed joints. In oligoarticular juvenile idiopathic arthritis (JIA), synovial fluid neutrophils have impaired effector functions and altered phenotype. We hypothesized that these alterations might impact the immunoregulatory interplay between neutrophils and T cells. In this study we analyzed the suppressive effect of neutrophils, isolated from blood and synovial fluid of oligoarticular JIA patients, on CD4+ T cells activated by CD3/CD28 stimulation. JIA blood neutrophils suppressed T cell proliferation but synovial fluid neutrophils from several patients did not. The loss of T cell suppression was replicated in an in vitro transmigration assay, where healthy control neutrophils migrated into synovial fluid through transwell inserts with endothelial cells and synoviocytes. Non-migrated neutrophils suppressed proliferation of activated CD4+ T cells, but migrated neutrophils had no suppressive effect. Neutrophil suppression of T cells was partly dependent on reactive oxygen species (ROS), demonstrated by impaired suppression in presence of catalase. Migrated neutrophils had reduced ROS production compared to non-migrated neutrophils. A proteomic analysis of transwell-migrated neutrophils identified alterations in proteins related to neutrophil ROS production and degranulation, and biological processes involving protein transport, cell-cell contact and inflammation. In conclusion, neutrophils in synovial fluid of children with JIA have impaired capacity to suppress activated T cells, which may be due to reduced oxidative burst and alterations in proteins related to cell-cell contact and inflammation. The lack of T cell suppression by neutrophils in synovial fluid may contribute to local inflammation and autoimmune reactions in the JIA joint.
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Affiliation(s)
- Sabine Arve-Butler
- Department of Rheumatology, Clinical Sciences Lund, Lund University, Lund, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
| | - Anki Mossberg
- Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden.,Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Tobias Schmidt
- Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden.,Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Charlotte Welinder
- Department of Clinical Sciences, Division of Oncology, Lund University, Lund, Sweden
| | - Hong Yan
- Swedish National Infrastructure for Biological Mass Spectrometry, Biological Mass Spectrometry (BioMS), Lund, Sweden
| | - Elisabet Berthold
- Department of Rheumatology, Clinical Sciences Lund, Lund University, Lund, Sweden.,Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden
| | - Petra Król
- Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Robin Kahn
- Wallenberg Center for Molecular Medicine, Lund University, Lund, Sweden.,Department of Pediatrics, Clinical Sciences Lund, Lund University, Lund, Sweden
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12
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Capitani N, Onnis A, Finetti F, Cassioli C, Plebani A, Brunetti J, Troilo A, D’Elios S, Baronio M, Gazzurelli L, Della Bella C, Billadeau DD, D’Elios MM, Lougaris V, Baldari CT. A CVID-associated variant in the ciliogenesis protein CCDC28B disrupts immune synapse assembly. Cell Death Differ 2022; 29:65-81. [PMID: 34294890 PMCID: PMC8738737 DOI: 10.1038/s41418-021-00837-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 06/30/2021] [Accepted: 07/07/2021] [Indexed: 01/03/2023] Open
Abstract
Ciliogenesis proteins orchestrate vesicular trafficking pathways that regulate immune synapse (IS) assembly in the non-ciliated T-cells. We hypothesized that ciliogenesis-related genes might be disease candidates for common variable immunodeficiency with impaired T-cell function (T-CVID). We identified a heterozygous, predicted pathogenic variant in the ciliogenesis protein CCDC28B present with increased frequency in a large CVID cohort. We show that CCDC28B participates in IS assembly by regulating polarized T-cell antigen receptor (TCR) recycling. This involves the CCDC28B-dependent, FAM21-mediated recruitment of the actin regulator WASH to retromer at early endosomes to promote actin polymerization. The CVID-associated CCDC28BR25W variant failed to interact with FAM21, leading to impaired synaptic TCR recycling. CVID T cells carrying the ccdc28b 211 C > T allele displayed IS defects mapping to this pathway that were corrected by overexpression of the wild-type allele. These results identify a new disease gene in T-CVID and pinpoint CCDC28B as a new player in IS assembly.
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Affiliation(s)
- Nagaja Capitani
- grid.9024.f0000 0004 1757 4641Department of Life Sciences, University of Siena, Siena, Italy
| | - Anna Onnis
- grid.9024.f0000 0004 1757 4641Department of Life Sciences, University of Siena, Siena, Italy
| | - Francesca Finetti
- grid.9024.f0000 0004 1757 4641Department of Life Sciences, University of Siena, Siena, Italy
| | - Chiara Cassioli
- grid.9024.f0000 0004 1757 4641Department of Life Sciences, University of Siena, Siena, Italy
| | - Alessandro Plebani
- grid.7637.50000000417571846Department of Clinical and Experimental Sciences, University of Brescia, and ASST-Spedali Civili of Brescia, Brescia, Italy
| | - Jlenia Brunetti
- grid.9024.f0000 0004 1757 4641Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Arianna Troilo
- grid.8404.80000 0004 1757 2304Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Sofia D’Elios
- grid.5395.a0000 0004 1757 3729Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Manuela Baronio
- grid.7637.50000000417571846Department of Clinical and Experimental Sciences, University of Brescia, and ASST-Spedali Civili of Brescia, Brescia, Italy
| | - Luisa Gazzurelli
- grid.7637.50000000417571846Department of Clinical and Experimental Sciences, University of Brescia, and ASST-Spedali Civili of Brescia, Brescia, Italy
| | - Chiara Della Bella
- grid.8404.80000 0004 1757 2304Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Daniel D. Billadeau
- grid.66875.3a0000 0004 0459 167XDivision of Oncology Research, Schulze Center for Novel Therapeutics, Mayo Clinic, Rochester, MN USA
| | - Mario Milco D’Elios
- grid.8404.80000 0004 1757 2304Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Vassilios Lougaris
- grid.7637.50000000417571846Department of Clinical and Experimental Sciences, University of Brescia, and ASST-Spedali Civili of Brescia, Brescia, Italy
| | - Cosima T. Baldari
- grid.9024.f0000 0004 1757 4641Department of Life Sciences, University of Siena, Siena, Italy
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13
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Martínez-Méndez D, Mendoza L, Villarreal C, Huerta L. Continuous Modeling of T CD4 Lymphocyte Activation and Function. Front Immunol 2021; 12:743559. [PMID: 34804023 PMCID: PMC8602102 DOI: 10.3389/fimmu.2021.743559] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2021] [Accepted: 10/05/2021] [Indexed: 11/13/2022] Open
Abstract
T CD4+ cells are central to the adaptive immune response against pathogens. Their activation is induced by the engagement of the T-cell receptor by antigens, and of co-stimulatory receptors by molecules also expressed on antigen presenting cells. Then, a complex network of intracellular events reinforce, diversify and regulate the initial signals, including dynamic metabolic processes that strongly influence both the activation state and the differentiation to effector cell phenotypes. The regulation of cell metabolism is controlled by the nutrient sensor adenosine monophosphate-activated protein kinase (AMPK), which drives the balance between oxidative phosphorylation (OXPHOS) and glycolysis. Herein, we put forward a 51-node continuous mathematical model that describes the temporal evolution of the early events of activation, integrating a circuit of metabolic regulation into the main routes of signaling. The model simulates the induction of anergy due to defective co-stimulation, the CTLA-4 checkpoint blockade, and the differentiation to effector phenotypes induced by external cytokines. It also describes the adjustment of the OXPHOS-glycolysis equilibrium by the action of AMPK as the effector function of the T cell develops. The development of a transient phase of increased OXPHOS before induction of a sustained glycolytic phase during differentiation to the Th1, Th2 and Th17 phenotypes is shown. In contrast, during Treg differentiation, glycolysis is subsequently reduced as cell metabolism is predominantly polarized towards OXPHOS. These observations are in agreement with experimental data suggesting that OXPHOS produces an ATP reservoir before glycolysis boosts the production of metabolites needed for protein synthesis, cell function, and growth.
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Affiliation(s)
| | - Luis Mendoza
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Carlos Villarreal
- Instituto de Física, Universidad Nacional Autónoma de México, Mexico City, Mexico
- Centro de Ciencias de la Complejidad, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Leonor Huerta
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, Mexico
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14
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Garofalo C, De Marco C, Cristiani CM. NK Cells in the Tumor Microenvironment as New Potential Players Mediating Chemotherapy Effects in Metastatic Melanoma. Front Oncol 2021; 11:754541. [PMID: 34712615 PMCID: PMC8547654 DOI: 10.3389/fonc.2021.754541] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 09/27/2021] [Indexed: 12/13/2022] Open
Abstract
Until the last decade, chemotherapy was the standard treatment for metastatic cutaneous melanoma, even with poor results. The introduction of immune checkpoints inhibitors (ICIs) radically changed the outcome, increasing 5-year survival from 5% to 60%. However, there is still a large portion of unresponsive patients that would need further therapies. NK cells are skin-resident innate cytotoxic lymphocytes that recognize and kill virus-infected as well as cancer cells thanks to a balance between inhibitory and activating signals delivered by surface molecules expressed by the target. Since NK cells are equipped with cytotoxic machinery but lack of antigen restriction and needing to be primed, they are nowadays gaining attention as an alternative to T cells to be exploited in immunotherapy. However, their usage suffers of the same limitations reported for T cells, that is the loss of immunogenicity by target cells and the difficulty to penetrate and be activated in the suppressive tumor microenvironment (TME). Several evidence showed that chemotherapy used in metastatic melanoma therapy possess immunomodulatory properties that may restore NK cells functions within TME. Here, we will discuss the capability of such chemotherapeutics to: i) up-regulate melanoma cells susceptibility to NK cell-mediated killing, ii) promote NK cells infiltration within TME, iii) target other immune cell subsets that affect NK cells activities. Alongside traditional systemic melanoma chemotherapy, a new pharmacological strategy based on nanocarriers loaded with chemotherapeutics is developing. The use of nanotechnologies represents a very promising approach to improve drug tolerability and effectiveness thanks to the targeted delivery of the therapeutic molecules. Here, we will also discuss the recent developments in using nanocarriers to deliver anti-cancer drugs within the melanoma microenvironment in order to improve chemotherapeutics effects. Overall, we highlight the possibility to use standard chemotherapeutics, possibly delivered by nanosystems, to enhance NK cells anti-tumor cytotoxicity. Combined with immunotherapies targeting NK cells, this may represent a valuable alternative approach to treat those patients that do not respond to current ICIs.
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Affiliation(s)
- Cinzia Garofalo
- Department of Experimental and Clinical Medicine, "Magna Græcia" University of Catanzaro, Catanzaro, Italy
| | - Carmela De Marco
- Department of Experimental and Clinical Medicine, "Magna Græcia" University of Catanzaro, Catanzaro, Italy
| | - Costanza Maria Cristiani
- Department of Experimental and Clinical Medicine, "Magna Græcia" University of Catanzaro, Catanzaro, Italy
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15
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Mastrogiovanni M, Di Bartolo V, Alcover A. Cell Polarity Regulators, Multifunctional Organizers of Lymphocyte Activation and Function. Biomed J 2021; 45:299-309. [PMID: 34626864 PMCID: PMC9250085 DOI: 10.1016/j.bj.2021.10.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/01/2021] [Accepted: 10/01/2021] [Indexed: 11/27/2022] Open
Abstract
Cell polarity regulators are ubiquitous, evolutionary conserved multifunctional proteins. They contain a variety of protein–protein interaction domains endowing them the capacity to interact with cytoskeleton structures, membrane components and multiple regulatory proteins. In this way, they act in complexes and are pivotal for cell growth and differentiation, tissue formation, stability and turnover, cell migration, wound healing, and others. Hence some of these proteins are tumor suppressors. These cellular processes rely on the establishment of cell polarity characterized by the asymmetric localization of proteins, RNAs, membrane domains, or organelles that together condition cell shape and function. Whether apparently stable, as in epithelia or neurons, or very dynamic, as in immune cells, cell polarity is an active process. It involves cytoskeleton reorganization and targeted intracellular traffic, and results in cellular events such as protein synthesis, secretion and assembly taking place at defined cell poles. Multiple polarity regulators orchestrate these processes. Immune cells are particularly versatile in rapidly polarizing and assuming different shapes, so to swiftly adopt specialized behaviors and functions. Polarity regulators act in various ways in different immune cell types and at their distinct differentiation states. Here we review how cell polarity regulators control different processes and functions along T lymphocyte physiology, including cell migration through different tissues, immunological synapse formation and effector functions.
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Affiliation(s)
- Marta Mastrogiovanni
- Lymphocyte Cell Biology Unit, Ligue Nationale Contre le Cancer, Équipe Labellisée Ligue 2018, Department of Immunology, Institut Pasteur, INSERM-U1224. F-75015 Paris, France; Sorbonne Université, Collège Doctoral, F-75005 Paris. France
| | - Vincenzo Di Bartolo
- Lymphocyte Cell Biology Unit, Ligue Nationale Contre le Cancer, Équipe Labellisée Ligue 2018, Department of Immunology, Institut Pasteur, INSERM-U1224. F-75015 Paris, France
| | - Andrés Alcover
- Lymphocyte Cell Biology Unit, Ligue Nationale Contre le Cancer, Équipe Labellisée Ligue 2018, Department of Immunology, Institut Pasteur, INSERM-U1224. F-75015 Paris, France.
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16
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Post-translational modifications and stabilization of microtubules regulate transport of viral factors during infections. Biochem Soc Trans 2021; 49:1735-1748. [PMID: 34436545 DOI: 10.1042/bst20210017] [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: 05/24/2021] [Revised: 08/05/2021] [Accepted: 08/10/2021] [Indexed: 11/17/2022]
Abstract
Tubulin post-translational modifications (PTMs) constitute a source of diversity for microtubule (MT) functions, in addition to the different isotypes of α and β-tubulin acting as building blocks of MTs. Also, MT-associated proteins (MAPs) confer different characteristics to MTs. The combination of all these factors regulates the stability of these structures that act as rails to transport organelles within the cell, facilitating the association of motor complexes. All these functions are involved in crucial cellular processes in most cell types, ranging from spindle formation in mitosis to the defense against incoming cellular threats during phagocytosis mediated by immune cells. The regulation of MT dynamics through tubulin PTMs has evolved to depend on many different factors that act in a complex orchestrated manner. These tightly regulated processes are particularly relevant during the induction of effective immune responses against pathogens. Viruses have proved not only to hijack MTs and MAPs in order to favor an efficient infection, but also to induce certain PTMs that improve their cellular spread and lead to secondary consequences of viral processes. In this review, we offer a perspective on relevant MT-related elements exploited by viruses.
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17
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Zhou H, Xue Y, Dong L, Wang C. Biomaterial-based physical regulation of macrophage behaviour. J Mater Chem B 2021; 9:3608-3621. [PMID: 33908577 DOI: 10.1039/d1tb00107h] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Macrophages play a critical role in regulating immune reactions induced by implanted biomaterials. They are highly plastic and in response to diverse stimuli in the microenvironment can exhibit a spectrum of phenotypes and functions. In addition to biochemical signals, the physical properties of biomaterials are becoming increasingly appreciated for their significant impact on macrophage behaviour, and the underlying mechanisms deserve more in-depth investigations. This review first summarises the effects of key physical cues - including stiffness, topography, physical confinement and applied force - on macrophage behaviour. Then, it reviews the current knowledge of cellular sensing and transduction of physical cues into intracellular signals. Finally, it discusses the major challenges in understanding mechanical regulation that could provide insights for biomaterial design.
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Affiliation(s)
- Huiqun Zhou
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China.
| | - Yizebang Xue
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China. and Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, China
| | - Lei Dong
- State Key Laboratory of Pharmaceutical Biotechnology, Medical School & School of Life Sciences, Nanjing University, Nanjing, Jiangsu 210023, China
| | - Chunming Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Taipa, Macau SAR, China.
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18
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Capitani N, Baldari CT. F-Actin Dynamics in the Regulation of Endosomal Recycling and Immune Synapse Assembly. Front Cell Dev Biol 2021; 9:670882. [PMID: 34249926 PMCID: PMC8265274 DOI: 10.3389/fcell.2021.670882] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 05/24/2021] [Indexed: 12/24/2022] Open
Abstract
Membrane proteins endocytosed at the cell surface as vesicular cargoes are sorted at early endosomes for delivery to lysosomes for degradation or alternatively recycled to different cellular destinations. Cargo recycling is orchestrated by multimolecular complexes that include the retromer, retriever, and the WASH complex, which promote the polymerization of new actin filaments at early endosomes. These endosomal actin pools play a key role at different steps of the recycling process, from cargo segregation to specific endosomal subdomains to the generation and mobility of tubulo-vesicular transport carriers. Local F-actin pools also participate in the complex redistribution of endomembranes and organelles that leads to the acquisition of cell polarity. Here, we will present an overview of the contribution of endosomal F-actin to T-cell polarization during assembly of the immune synapse, a specialized membrane domain that T cells form at the contact with cognate antigen-presenting cells.
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Affiliation(s)
- Nagaja Capitani
- Department of Life Sciences, University of Siena, Siena, Italy
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19
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[Effect of dexamethasone on the expression of Dynein heavy chain and Dynactin in the cytoplasm of fetal rat cerebral cortical neurons cultured in vitro]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2021; 23. [PMID: 34130788 PMCID: PMC8213999 DOI: 10.7499/j.issn.1008-8830.2103151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVE To study the effect of dexamethasone (DEX) on the expression of Dynein heavy chain (DHC) and Dynactin in the cytoplasm of fetal rat cerebral cortical neurons cultured in vitro. METHODS Primary cerebral cortical neurons of fetal rats were cultured in vitro and were used to establish a cellular model of DEX intervention. According to the final concentration of DEX, the neurons were divided into three groups:control (without DEX), 0.1 μmol/L DEX, and 1.0 μmol/L DEX. On days 1, 3, and 7 after intervention, the quantitative PCR was used to observe the effect of DEX on the mRNA expression of DHC and Dynactin. The Western blot was used to observe the effect of DEX on the protein expression of DHC and Dynactin. RESULTS There was no significant difference in the mRNA expression levels of DHC and Dynactin among the three groups at all time points (P > 0.05). On day 7 after DEX intervention, the protein expression of DHC in the 1.0 μmol/L DEX group gradually increased and reached the peak over time, which was significantly higher than that in the control and 0.1 μmol/L DEX groups (P < 0.05). The control and 0.1 μmol/L DEX groups had a significant increase in the protein expression of Dynactin from day 1 to days 3 and 7 after DEX intervention (P < 0.05). The control group had a significant increase in the protein expression of Dynactin from day 3 to day 7 after intervention (P < 0.05), while the 0.1 μmol/L DEX group had a significant reduction in the protein expression of Dynactin from day 3 to day 7 after intervention (P < 0.05). On days 3 and 7 after DEX intervention, the 0.1 μmol/L DEX and 1.0 μmol/L DEX groups had a significantly lower protein expression level of Dynactin in the cerebral cortical neurons than the control group (P < 0.05). On day 7 after DEX intervention, the 1.0 μmol/L DEX group had a significantly lower protein expression level of Dynactin than the 0.1 μmol/L DEX group (P < 0.05). CONCLUSIONS DEX affects the protein expression of DHC and Dynactin in the fetal rat cerebral cortical neurons cultured in vitro, possibly in a concentration- and time-dependent manner.
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20
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Fragliasso V, Tameni A, Inghirami G, Mularoni V, Ciarrocchi A. Cytoskeleton Dynamics in Peripheral T Cell Lymphomas: An Intricate Network Sustaining Lymphomagenesis. Front Oncol 2021; 11:643620. [PMID: 33928032 PMCID: PMC8076600 DOI: 10.3389/fonc.2021.643620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/17/2021] [Indexed: 12/04/2022] Open
Abstract
Defects in cytoskeleton functions support tumorigenesis fostering an aberrant proliferation and promoting inappropriate migratory and invasive features. The link between cytoskeleton and tumor features has been extensively investigated in solid tumors. However, the emerging genetic and molecular landscape of peripheral T cell lymphomas (PTCL) has unveiled several alterations targeting structure and function of the cytoskeleton, highlighting its role in cell shape changes and the aberrant cell division of malignant T cells. In this review, we summarize the most recent evidence about the role of cytoskeleton in PTCLs development and progression. We also discuss how aberrant signaling pathways, like JAK/STAT3, NPM-ALK, RhoGTPase, and Aurora Kinase, can contribute to lymphomagenesis by modifying the structure and the signaling properties of cytoskeleton.
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Affiliation(s)
- Valentina Fragliasso
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Annalisa Tameni
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy.,Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Giorgio Inghirami
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Valentina Mularoni
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Alessia Ciarrocchi
- Laboratory of Translational Research, Azienda USL-IRCCS di Reggio Emilia, Reggio Emilia, Italy
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21
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Martín-Cófreces NB, Valpuesta JM, Sánchez-Madrid F. Folding for the Immune Synapse: CCT Chaperonin and the Cytoskeleton. Front Cell Dev Biol 2021; 9:658460. [PMID: 33912568 PMCID: PMC8075050 DOI: 10.3389/fcell.2021.658460] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 03/23/2021] [Indexed: 12/17/2022] Open
Abstract
Lymphocytes rearrange their shape, membrane receptors and organelles during cognate contacts with antigen-presenting cells (APCs). Activation of T cells by APCs through pMHC-TCR/CD3 interaction (peptide-major histocompatibility complex-T cell receptor/CD3 complexes) involves different steps that lead to the reorganization of the cytoskeleton and organelles and, eventually, activation of nuclear factors allowing transcription and ultimately, replication and cell division. Both the positioning of the lymphocyte centrosome in close proximity to the APC and the nucleation of a dense microtubule network beneath the plasma membrane from the centrosome support the T cell's intracellular polarity. Signaling from the TCR is facilitated by this traffic, which constitutes an important pathway for regulation of T cell activation. The coordinated enrichment upon T cell stimulation of the chaperonin CCT (chaperonin-containing tailless complex polypeptide 1; also termed TRiC) and tubulins at the centrosome area support polarized tubulin polymerization and T cell activation. The proteasome is also enriched in the centrosome of activated T cells, providing a mechanism to balance local protein synthesis and degradation. CCT assists the folding of proteins coming from de novo synthesis, therefore favoring mRNA translation. The functional role of this chaperonin in regulating cytoskeletal composition and dynamics at the immune synapse is discussed.
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Affiliation(s)
- Noa Beatriz Martín-Cófreces
- Immunology Service, Hospital Universitario de la Princesa, Universidad Autonoma Madrid (UAM), Instituto Investigacion Sanitaria-Instituto Princesa (IIS-IP), Madrid, Spain.,Area of Vascular Pathophysiology, Laboratory of Intercellular Communication, Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | | | - Francisco Sánchez-Madrid
- Immunology Service, Hospital Universitario de la Princesa, Universidad Autonoma Madrid (UAM), Instituto Investigacion Sanitaria-Instituto Princesa (IIS-IP), Madrid, Spain.,Area of Vascular Pathophysiology, Laboratory of Intercellular Communication, Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, Madrid, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
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22
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Kopf A, Kiermaier E. Dynamic Microtubule Arrays in Leukocytes and Their Role in Cell Migration and Immune Synapse Formation. Front Cell Dev Biol 2021; 9:635511. [PMID: 33634136 PMCID: PMC7900162 DOI: 10.3389/fcell.2021.635511] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/18/2021] [Indexed: 01/13/2023] Open
Abstract
The organization of microtubule arrays in immune cells is critically important for a properly operating immune system. Leukocytes are white blood cells of hematopoietic origin, which exert effector functions of innate and adaptive immune responses. During these processes the microtubule cytoskeleton plays a crucial role for establishing cell polarization and directed migration, targeted secretion of vesicles for T cell activation and cellular cytotoxicity as well as the maintenance of cell integrity. Considering this large spectrum of distinct effector functions, leukocytes require flexible microtubule arrays, which timely and spatially reorganize allowing the cells to accommodate their specific tasks. In contrast to other specialized cell types, which typically nucleate microtubule filaments from non-centrosomal microtubule organizing centers (MTOCs), leukocytes mainly utilize centrosomes for sites of microtubule nucleation. Yet, MTOC localization as well as microtubule organization and dynamics are highly plastic in leukocytes thus allowing the cells to adapt to different environmental constraints. Here we summarize our current knowledge on microtubule organization and dynamics during immune processes and how these microtubule arrays affect immune cell effector functions. We particularly highlight emerging concepts of microtubule involvement during maintenance of cell shape and physical coherence.
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Affiliation(s)
- Aglaja Kopf
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Eva Kiermaier
- Life and Medical Sciences Institute, Immune and Tumor Biology, University of Bonn, Bonn, Germany
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23
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Koppers M, Özkan N, Farías GG. Complex Interactions Between Membrane-Bound Organelles, Biomolecular Condensates and the Cytoskeleton. Front Cell Dev Biol 2020; 8:618733. [PMID: 33409284 PMCID: PMC7779554 DOI: 10.3389/fcell.2020.618733] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Accepted: 12/03/2020] [Indexed: 12/13/2022] Open
Abstract
Membrane-bound and membraneless organelles/biomolecular condensates ensure compartmentalization into functionally distinct units enabling proper organization of cellular processes. Membrane-bound organelles form dynamic contacts with each other to enable the exchange of molecules and to regulate organelle division and positioning in coordination with the cytoskeleton. Crosstalk between the cytoskeleton and dynamic membrane-bound organelles has more recently also been found to regulate cytoskeletal organization. Interestingly, recent work has revealed that, in addition, the cytoskeleton and membrane-bound organelles interact with cytoplasmic biomolecular condensates. The extent and relevance of these complex interactions are just beginning to emerge but may be important for cytoskeletal organization and organelle transport and remodeling. In this review, we highlight these emerging functions and emphasize the complex interplay of the cytoskeleton with these organelles. The crosstalk between membrane-bound organelles, biomolecular condensates and the cytoskeleton in highly polarized cells such as neurons could play essential roles in neuronal development, function and maintenance.
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Affiliation(s)
| | | | - Ginny G. Farías
- Cell Biology, Neurobiology and Biophysics, Department of Biology, Faculty of Science, Utrecht University, Utrecht, Netherlands
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24
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Li R, Ma C, Cai H, Chen W. The CAR T-Cell Mechanoimmunology at a Glance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2002628. [PMID: 33344135 PMCID: PMC7740088 DOI: 10.1002/advs.202002628] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/13/2020] [Indexed: 05/10/2023]
Abstract
Chimeric antigen receptor (CAR) T-cell transfer is a novel paradigm of adoptive T-cell immunotherapy. When coming into contact with a target cancer cell, CAR T-cell forms a nonclassical immunological synapse with the cancer cell and dynamically orchestrates multiple critical forces to commit cytotoxic immune function. Such an immunologic process involves a force transmission in the CAR and a spatiotemporal remodeling of cell cytoskeleton to facilitate CAR activation and CAR T-cell cytotoxic function. Yet, the detailed understanding of such mechanotransduction at the interface between the CAR T-cell and the target cell, as well as its molecular structure and signaling, remains less defined and is just beginning to emerge. This article summarizes the basic mechanisms and principles of CAR T-cell mechanoimmunology, and various lessons that can be comparatively learned from interrogation of mechanotransduction at the immunological synapse in normal cytotoxic T-cell. The recent development and future application of novel bioengineering tools for studying CAR T-cell mechanoimmunology is also discussed. It is believed that this progress report will shed light on the CAR T-cell mechanoimmunology and encourage future researches in revealing the less explored yet important mechanosensing and mechanotransductive mechanisms involved in CAR T-cell immuno-oncology.
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Affiliation(s)
- Rui Li
- Department of Mechanical and Aerospace EngineeringNew York UniversityBrooklynNY11201USA
- Department of Biomedical EngineeringNew York UniversityBrooklynNY11201USA
| | - Chao Ma
- Department of Mechanical and Aerospace EngineeringNew York UniversityBrooklynNY11201USA
- Department of Biomedical EngineeringNew York UniversityBrooklynNY11201USA
| | - Haogang Cai
- Tech4Health instituteNYU Langone HealthNew YorkNY10016USA
- Department of RadiologyNYU Langone HealthNew YorkNY10016USA
| | - Weiqiang Chen
- Department of Mechanical and Aerospace EngineeringNew York UniversityBrooklynNY11201USA
- Department of Biomedical EngineeringNew York UniversityBrooklynNY11201USA
- Laura and Isaac Perlmutter Cancer CenterNYU Langone HealthNew YorkNY10016USA
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25
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Mastrogiovanni M, Juzans M, Alcover A, Di Bartolo V. Coordinating Cytoskeleton and Molecular Traffic in T Cell Migration, Activation, and Effector Functions. Front Cell Dev Biol 2020; 8:591348. [PMID: 33195256 PMCID: PMC7609836 DOI: 10.3389/fcell.2020.591348] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 09/24/2020] [Indexed: 12/28/2022] Open
Abstract
Dynamic localization of receptors and signaling molecules at the plasma membrane and within intracellular vesicular compartments is crucial for T lymphocyte sensing environmental cues, triggering membrane receptors, recruiting signaling molecules, and fine-tuning of intracellular signals. The orchestrated action of actin and microtubule cytoskeleton and intracellular vesicle traffic plays a key role in all these events that together ensure important steps in T cell physiology. These include extravasation and migration through lymphoid and peripheral tissues, T cell interactions with antigen-presenting cells, T cell receptor (TCR) triggering by cognate antigen–major histocompatibility complex (MHC) complexes, immunological synapse formation, cell activation, and effector functions. Cytoskeletal and vesicle traffic dynamics and their interplay are coordinated by a variety of regulatory molecules. Among them, polarity regulators and membrane–cytoskeleton linkers are master controllers of this interplay. Here, we review the various ways the T cell plasma membrane, receptors, and their signaling machinery interplay with the actin and microtubule cytoskeleton and with intracellular vesicular compartments. We highlight the importance of this fine-tuned crosstalk in three key stages of T cell biology involving cell polarization: T cell migration in response to chemokines, immunological synapse formation in response to antigen cues, and effector functions. Finally, we discuss two examples of perturbation of this interplay in pathological settings, such as HIV-1 infection and mutation of the polarity regulator and tumor suppressor adenomatous polyposis coli (Apc) that leads to familial polyposis and colorectal cancer.
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Affiliation(s)
- Marta Mastrogiovanni
- Ligue Nationale Contre le Cancer - Equipe Labellisée LIGUE 2018, Lymphocyte Cell Biology Unit, INSERM-U1221, Department of Immunology, Institut Pasteur, Paris, France.,Collège Doctoral, Sorbonne Université, Paris, France
| | - Marie Juzans
- Ligue Nationale Contre le Cancer - Equipe Labellisée LIGUE 2018, Lymphocyte Cell Biology Unit, INSERM-U1221, Department of Immunology, Institut Pasteur, Paris, France
| | - Andrés Alcover
- Ligue Nationale Contre le Cancer - Equipe Labellisée LIGUE 2018, Lymphocyte Cell Biology Unit, INSERM-U1221, Department of Immunology, Institut Pasteur, Paris, France
| | - Vincenzo Di Bartolo
- Ligue Nationale Contre le Cancer - Equipe Labellisée LIGUE 2018, Lymphocyte Cell Biology Unit, INSERM-U1221, Department of Immunology, Institut Pasteur, Paris, France
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26
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Ledderose C, Junger WG. Mitochondria Synergize With P2 Receptors to Regulate Human T Cell Function. Front Immunol 2020; 11:549889. [PMID: 33133068 PMCID: PMC7550529 DOI: 10.3389/fimmu.2020.549889] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 08/27/2020] [Indexed: 12/17/2022] Open
Abstract
Intracellular ATP is the universal energy carrier that fuels many cellular processes. However, immune cells can also release a portion of their ATP into the extracellular space. There, ATP activates purinergic receptors that mediate autocrine and paracrine signaling events needed for the initiation, modulation, and termination of cell functions. Mitochondria contribute to these processes by producing ATP that is released. Here, we summarize the synergistic interplay between mitochondria and purinergic signaling that regulates T cell functions. Specifically, we discuss how mitochondria interact with P2X1, P2X4, and P2Y11 receptors to regulate T cell metabolism, cell migration, and antigen recognition. These mitochondrial and purinergic signaling mechanisms are indispensable for host immune defense. However, they also represent an Achilles heel that can render the host susceptible to infections and inflammatory disorders. Hypoxia and mitochondrial dysfunction deflate the purinergic signaling mechanisms that regulate T cells, while inflammation and tissue damage generate excessive systemic ATP levels that distort autocrine purinergic signaling and impair T cell function. An improved understanding of the metabolic and purinergic signaling mechanisms that regulate T cells may lead to novel strategies for the diagnosis and treatment of infectious and inflammatory diseases.
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Affiliation(s)
- Carola Ledderose
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
| | - Wolfgang G Junger
- Department of Surgery, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
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27
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Montesinos JC, Abuzeineh A, Kopf A, Juanes-Garcia A, Ötvös K, Petrášek J, Sixt M, Benková E. Phytohormone cytokinin guides microtubule dynamics during cell progression from proliferative to differentiated stage. EMBO J 2020; 39:e104238. [PMID: 32667089 PMCID: PMC7459425 DOI: 10.15252/embj.2019104238] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 06/12/2020] [Accepted: 06/22/2020] [Indexed: 12/22/2022] Open
Abstract
Cell production and differentiation for the acquisition of specific functions are key features of living systems. The dynamic network of cellular microtubules provides the necessary platform to accommodate processes associated with the transition of cells through the individual phases of cytogenesis. Here, we show that the plant hormone cytokinin fine‐tunes the activity of the microtubular cytoskeleton during cell differentiation and counteracts microtubular rearrangements driven by the hormone auxin. The endogenous upward gradient of cytokinin activity along the longitudinal growth axis in Arabidopsis thaliana roots correlates with robust rearrangements of the microtubule cytoskeleton in epidermal cells progressing from the proliferative to the differentiation stage. Controlled increases in cytokinin activity result in premature re‐organization of the microtubule network from transversal to an oblique disposition in cells prior to their differentiation, whereas attenuated hormone perception delays cytoskeleton conversion into a configuration typical for differentiated cells. Intriguingly, cytokinin can interfere with microtubules also in animal cells, such as leukocytes, suggesting that a cytokinin‐sensitive control pathway for the microtubular cytoskeleton may be at least partially conserved between plant and animal cells.
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Affiliation(s)
| | - Anas Abuzeineh
- Department of Plant Biotechnology and Bioinformatics, Ghent University and Center for Plant Systems Biology, VIB, Gent, Belgium
| | - Aglaja Kopf
- Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Austria
| | - Alba Juanes-Garcia
- Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Austria
| | - Krisztina Ötvös
- Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Austria.,Bioresources Unit, Center for Health & Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | - Jan Petrášek
- Institute of Experimental Botany, The Czech Academy of Sciences, Praha, Czech Republic
| | - Michael Sixt
- Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Austria
| | - Eva Benková
- Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Austria
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28
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Ledderose C, Bromberger S, Slubowski CJ, Sueyoshi K, Junger WG. Frontline Science: P2Y11 receptors support T cell activation by directing mitochondrial trafficking to the immune synapse. J Leukoc Biol 2020; 109:497-508. [PMID: 32531829 DOI: 10.1002/jlb.2hi0520-191r] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/08/2020] [Accepted: 05/23/2020] [Indexed: 12/21/2022] Open
Abstract
T cells form an immune synapse (IS) with antigen-presenting cells (APCs) to detect antigens that match their TCR. Mitochondria, pannexin-1 (panx1) channels, and P2X4 receptors congregate at the IS where mitochondria produce the ATP that panx1 channels release in order to stimulate P2X4 receptors. P2X4 receptor stimulation causes cellular Ca2+ influx that up-regulates mitochondrial metabolism and localized ATP production at the IS. Here we show that P2Y11 receptors are essential players that sustain these T cell activation mechanisms. We found that P2Y11 receptors retract from the IS toward the back of cells where their stimulation by extracellular ATP induces cAMP/PKA signaling that redirects mitochondrial trafficking to the IS. P2Y11 receptors thus reinforce IS signaling by promoting the aggregation of mitochondria with panx1 ATP release channels and P2X4 receptors at the IS. This dual purinergic signaling mechanism involving P2X4 and P2Y11 receptors focuses mitochondrial metabolism to the IS where localized ATP production sustains synaptic activity in order to allow successful completion of T cell activation responses. Our findings have practical implications because rodents lack P2Y11 receptors, raising concerns as to the validity of rodent models to study treatment of infections and inflammatory conditions.
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Affiliation(s)
- Carola Ledderose
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Sophie Bromberger
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Christian J Slubowski
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Koichiro Sueyoshi
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Wolfgang G Junger
- Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
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29
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Microtubule Organization in Striated Muscle Cells. Cells 2020; 9:cells9061395. [PMID: 32503326 PMCID: PMC7349303 DOI: 10.3390/cells9061395] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/25/2020] [Accepted: 05/28/2020] [Indexed: 12/13/2022] Open
Abstract
Distinctly organized microtubule networks contribute to the function of differentiated cell types such as neurons, epithelial cells, skeletal myotubes, and cardiomyocytes. In striated (i.e., skeletal and cardiac) muscle cells, the nuclear envelope acts as the dominant microtubule-organizing center (MTOC) and the function of the centrosome—the canonical MTOC of mammalian cells—is attenuated, a common feature of differentiated cell types. We summarize the mechanisms known to underlie MTOC formation at the nuclear envelope, discuss the significance of the nuclear envelope MTOC for muscle function and cell cycle progression, and outline potential mechanisms of centrosome attenuation.
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30
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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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31
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The Swing of Lipids at Peroxisomes and Endolysosomes in T Cell Activation. Int J Mol Sci 2020; 21:ijms21082859. [PMID: 32325900 PMCID: PMC7215844 DOI: 10.3390/ijms21082859] [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: 02/26/2020] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 02/06/2023] Open
Abstract
The immune synapse (IS) is a well-known intercellular communication platform, organized at the interphase between the antigen presenting cell (APC) and the T cell. After T cell receptor (TCR) stimulation, signaling from plasma membrane proteins and lipids is amplified by molecules and downstream pathways for full synapse formation and maintenance. This secondary signaling event relies on intracellular reorganization at the IS, involving the cytoskeleton and components of the secretory/recycling machinery, such as the Golgi apparatus and the endolysosomal system (ELS). T cell activation triggers a metabolic reprogramming that involves the synthesis of lipids, which act as signaling mediators, and an increase of mitochondrial activity. Then, this mitochondrial activity results in elevated reactive oxygen species (ROS) production that may lead to cytotoxicity. The regulation of ROS levels requires the concerted action of mitochondria and peroxisomes. In this review, we analyze this reprogramming and the signaling implications of endolysosomal, mitochondrial, peroxisomal, and lipidic systems in T cell activation.
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32
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Kumari S, Mak M, Poh YC, Tohme M, Watson N, Melo M, Janssen E, Dustin M, Geha R, Irvine DJ. Cytoskeletal tension actively sustains the migratory T-cell synaptic contact. EMBO J 2020; 39:e102783. [PMID: 31894880 PMCID: PMC7049817 DOI: 10.15252/embj.2019102783] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 11/12/2019] [Accepted: 11/18/2019] [Indexed: 01/06/2023] Open
Abstract
When migratory T cells encounter antigen-presenting cells (APCs), they arrest and form radially symmetric, stable intercellular junctions termed immunological synapses which facilitate exchange of crucial biochemical information and are critical for T-cell immunity. While the cellular processes underlying synapse formation have been well characterized, those that maintain the symmetry, and thereby the stability of the synapse, remain unknown. Here we identify an antigen-triggered mechanism that actively promotes T-cell synapse symmetry by generating cytoskeletal tension in the plane of the synapse through focal nucleation of actin via Wiskott-Aldrich syndrome protein (WASP), and contraction of the resultant actin filaments by myosin II. Following T-cell activation, WASP is degraded, leading to cytoskeletal unraveling and tension decay, which result in synapse breaking. Thus, our study identifies and characterizes a mechanical program within otherwise highly motile T cells that sustains the symmetry and stability of the T cell-APC synaptic contact.
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Affiliation(s)
- Sudha Kumari
- Koch Institute of Integrative Research, MIT, Cambridge, MA, USA.,Ragon Institute of Harvard, MIT and MGH, Cambridge, MA, USA
| | - Michael Mak
- Department of Mechanical Engineering, MIT, Cambridge, MA, USA
| | - Yeh-Chuin Poh
- Koch Institute of Integrative Research, MIT, Cambridge, MA, USA.,Department of Mechanical Engineering, MIT, Cambridge, MA, USA
| | - Mira Tohme
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Nicki Watson
- Whitehead Institute of Biomedical Research, Cambridge, MA, USA
| | - Mariane Melo
- Koch Institute of Integrative Research, MIT, Cambridge, MA, USA.,Ragon Institute of Harvard, MIT and MGH, Cambridge, MA, USA
| | - Erin Janssen
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael Dustin
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Raif Geha
- Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Darrell J Irvine
- Koch Institute of Integrative Research, MIT, Cambridge, MA, USA.,Ragon Institute of Harvard, MIT and MGH, Cambridge, MA, USA.,Department of Biological Engineering, MIT, Cambridge, MA, USA.,Howard Hughes Medical Institute, Chevy Chase, MD, USA
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33
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Janssen E, Geha RS. Primary immunodeficiencies caused by mutations in actin regulatory proteins. Immunol Rev 2019; 287:121-134. [PMID: 30565251 DOI: 10.1111/imr.12716] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 08/31/2018] [Indexed: 12/31/2022]
Abstract
The identification of patients with monogenic gene defects have illuminated the function of different proteins in the immune system, including proteins that regulate the actin cytoskeleton. Many of these actin regulatory proteins are exclusively expressed in leukocytes and regulate the formation and branching of actin filaments. Their absence or abnormal function leads to defects in immune cell shape, cellular projections, migration, and signaling. Through the study of patients' mutations and generation of mouse models that recapitulate the patients' phenotypes, our laboratory and others have gained a better understanding of the role these proteins play in cell biology and the underlying pathogenesis of immunodeficiencies and immune dysregulatory syndromes.
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Affiliation(s)
- Erin Janssen
- Division of Immunology, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Raif S Geha
- Division of Immunology, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
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34
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Torralba D, Martín-Cófreces NB, Sanchez-Madrid F. Mechanisms of polarized cell-cell communication of T lymphocytes. Immunol Lett 2019; 209:11-20. [PMID: 30954509 DOI: 10.1016/j.imlet.2019.03.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/13/2019] [Accepted: 03/17/2019] [Indexed: 01/07/2023]
Abstract
Cell-cell communication comprises a variety of molecular mechanisms that immune cells use to respond appropriately to diverse pathogenic stimuli. T lymphocytes polarize in response to different stimuli, such as cytokines, adhesion to specific ligands and cognate antigens presented in the context of MHC. Polarization takes different shapes, from migratory front-back polarization to the formation of immune synapses (IS). The formation of IS between a T cell and an antigen-presenting cell involves early events of receptor-ligand interaction leading to the reorganization of the plasma membrane and the cytoskeleton to orchestrate vesicular and endosomal traffic and directed secretion of several types of mediators, including cytokines and nanovesicles. Cell polarization involves the repositioning of many subcellular organelles, including the endosomal compartment, which becomes an effective platform for the shuttling of molecules as vesicular cargoes that lately will be secreted to transfer information to antigen-presenting cells. Overall, the polarized interaction between a T cell and APC modifies the recipient cell in different ways that are likely lineage-dependent, e.g. dendritic cells, B cells or even other T cells. In this review, we will discuss the mechanisms that mediate the polarization of different membrane receptors, cytoskeletal components and organelles in T cells in a variety of immune contexts.
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Affiliation(s)
- D Torralba
- Servicio de Inmunología, Hospital Universitario de la Princesa, UAM, IIS-IP, 28006 Madrid, Spain; Area of Vascular Pathophysiology, Laboratory of Intercellular Communication Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, 28029 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029 Madrid, Spain
| | - N B Martín-Cófreces
- Servicio de Inmunología, Hospital Universitario de la Princesa, UAM, IIS-IP, 28006 Madrid, Spain; Area of Vascular Pathophysiology, Laboratory of Intercellular Communication Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, 28029 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029 Madrid, Spain
| | - F Sanchez-Madrid
- Servicio de Inmunología, Hospital Universitario de la Princesa, UAM, IIS-IP, 28006 Madrid, Spain; Area of Vascular Pathophysiology, Laboratory of Intercellular Communication Fundación Centro Nacional de Investigaciones Cardiovasculares-Carlos III, 28029 Madrid, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), 28029 Madrid, Spain.
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35
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Abstract
For over a century, the centrosome has been an organelle more easily tracked than understood, and the study of its peregrinations within the cell remains a chief underpinning of its functional investigation. Increasing attention and new approaches have been brought to bear on mechanisms that control centrosome localization in the context of cleavage plane determination, ciliogenesis, directional migration, and immunological synapse formation, among other cellular and developmental processes. The Golgi complex, often linked with the centrosome, presents a contrasting case of a pleiomorphic organelle for which functional studies advanced somewhat more rapidly than positional tracking. However, Golgi orientation and distribution has emerged as an area of considerable interest with respect to polarized cellular function. This chapter will review our current understanding of the mechanism and significance of the positioning of these organelles.
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