1
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Kvalvaag A, Dustin ML. Clathrin controls bidirectional communication between T cells and antigen presenting cells. Bioessays 2024; 46:e2300230. [PMID: 38412391 DOI: 10.1002/bies.202300230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/29/2024]
Abstract
In circulation, T cells are spherical with selectin enriched dynamic microvilli protruding from the surface. Following extravasation, these microvilli serve another role, continuously surveying their environment for antigen in the form of peptide-MHC (pMHC) expressed on the surface of antigen presenting cells (APCs). Upon recognition of their cognate pMHC, the microvilli are initially stabilized and then flatten into F-actin dependent microclusters as the T cell spreads over the APC. Within 1-5 min, clathrin is recruited by the ESCRT-0 component Hrs to mediate release of T cell receptor (TCR) loaded vesicles directly from the plasma membrane by clathrin and ESCRT-mediated ectocytosis (CEME). After 5-10 min, Hrs is displaced by the endocytic clathrin adaptor epsin-1 to induce clathrin-mediated trans-endocytosis (CMTE) of TCR-pMHC conjugates. Here we discuss some of the functional properties of the clathrin machinery which enables it to control these topologically opposite modes of membrane transfer at the immunological synapse, and how this might be regulated during T cell activation.
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Affiliation(s)
- Audun Kvalvaag
- Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - Michael L Dustin
- Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
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2
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Lacouture C, Chaves B, Guipouy D, Houmadi R, Duplan-Eche V, Allart S, Destainville N, Dupré L. LFA-1 nanoclusters integrate TCR stimulation strength to tune T-cell cytotoxic activity. Nat Commun 2024; 15:407. [PMID: 38195629 PMCID: PMC10776856 DOI: 10.1038/s41467-024-44688-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Accepted: 12/29/2023] [Indexed: 01/11/2024] Open
Abstract
T-cell cytotoxic function relies on the cooperation between the highly specific but poorly adhesive T-cell receptor (TCR) and the integrin LFA-1. How LFA-1-mediated adhesion may scale with TCR stimulation strength is ill-defined. Here, we show that LFA-1 conformation activation scales with TCR stimulation to calibrate human T-cell cytotoxicity. Super-resolution microscopy analysis reveals that >1000 LFA-1 nanoclusters provide a discretized platform at the immunological synapse to translate TCR engagement and density of the LFA-1 ligand ICAM-1 into graded adhesion. Indeed, the number of high-affinity conformation LFA-1 nanoclusters increases as a function of TCR triggering strength. Blockade of LFA-1 conformational activation impairs adhesion to target cells and killing. However, it occurs at a lower TCR stimulation threshold than lytic granule exocytosis implying that it licenses, rather than directly controls, the killing decision. We conclude that the organization of LFA-1 into nanoclusters provides a calibrated system to adjust T-cell killing to the antigen stimulation strength.
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Affiliation(s)
- Claire Lacouture
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
- Laboratoire de Physique Théorique, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Beatriz Chaves
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
- National Institute of Science and Technology on Neuroimmunomodulation (INCT-NIM), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro, Brazil
- Computational Modeling Group, Oswaldo Cruz Foundation (Fiocruz), Eusébio, Brazil
| | - Delphine Guipouy
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
| | - Raïssa Houmadi
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
| | - Valérie Duplan-Eche
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
| | - Sophie Allart
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
| | - Nicolas Destainville
- Laboratoire de Physique Théorique, Université de Toulouse, CNRS, UPS, Toulouse, France.
| | - Loïc Dupré
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France.
- Department of Dermatology, Medical University of Vienna, Vienna, Austria.
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3
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Mandal S, Melo M, Gordiichuk P, Acharya S, Poh YC, Li N, Aung A, Dane EL, Irvine DJ, Kumari S. WASP facilitates tumor mechanosensitivity in T lymphocytes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.02.560434. [PMID: 37873483 PMCID: PMC10592916 DOI: 10.1101/2023.10.02.560434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Cytotoxic T lymphocytes (CTLs) carry out immunosurveillance by scanning target cells of diverse physical properties for the presence of antigens. While the recognition of cognate antigen by the T cell receptor is the primary signal for CTL activation, it has become increasingly clear that the mechanical stiffness of target cells plays an important role in antigen-triggered T cell responses. However, the molecular machinery within CTLs that transduces the mechanical information of tumor cells remains unclear. We find that CTL's mechanosensitive ability requires the activity of the actin-organizing protein Wiskott-Aldrich Syndrome Protein (WASP). WASP activation is modulated by the mechanical properties of antigen-presenting contexts across a wide range of target cell stiffnesses and activated WASP then mediates mechanosensitive activation of early TCR signaling markers in the CTL. Our results provide a molecular link between antigen mechanosensing and CTL immune response and suggest that CTL-intrinsic cytoskeletal organizing principles enable the processing of mechanical information from diverse target cells.
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Affiliation(s)
| | - Mariane Melo
- Koch Institute of Integrative Cancer Research, MIT, Cambridge, USA
| | | | | | - Yeh-Chuin Poh
- Koch Institute of Integrative Cancer Research, MIT, Cambridge, USA
| | - Na Li
- Koch Institute of Integrative Cancer Research, MIT, Cambridge, USA
| | - Aereas Aung
- Koch Institute of Integrative Cancer Research, MIT, Cambridge, USA
| | - Eric L. Dane
- Koch Institute of Integrative Cancer Research, MIT, Cambridge, USA
| | - Darrell J. Irvine
- Koch Institute of Integrative Cancer Research, MIT, Cambridge, USA
- Department of Biological Engineering, MIT, Cambridge, USA
- Howard Hughes Medical Institute, Ashburn, Virginia, USA
| | - Sudha Kumari
- Indian Institute of Science, Bengaluru, India
- Koch Institute of Integrative Cancer Research, MIT, Cambridge, USA
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4
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Vieira RC, Pinho LG, Westerberg LS. Understanding immunoactinopathies: A decade of research on WAS gene defects. Pediatr Allergy Immunol 2023; 34:e13951. [PMID: 37102395 DOI: 10.1111/pai.13951] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 04/28/2023]
Abstract
Immunoactinopathies caused by mutations in actin-related proteins are a growing group of inborn errors of immunity (IEI). Immunoactinopathies are caused by a dysregulated actin cytoskeleton and affect hematopoietic cells especially because of their unique capacity to survey the body for invading pathogens and altered self, such as cancer cells. These cell motility and cell-to-cell interaction properties depend on the dynamic nature of the actin cytoskeleton. Wiskott-Aldrich syndrome (WAS) is the archetypical immunoactinopathy and the first described. WAS is caused by loss-of-function and gain-of-function mutations in the actin regulator WASp, uniquely expressed in hematopoietic cells. Mutations in WAS cause a profound disturbance of actin cytoskeleton regulation of hematopoietic cells. Studies during the last 10 years have shed light on the specific effects on different hematopoietic cells, revealing that they are not affected equally by mutations in the WAS gene. Moreover, the mechanistic understanding of how WASp controls nuclear and cytoplasmatic activities may help to find therapeutic alternatives according to the site of the mutation and clinical phenotypes. In this review, we summarize recent findings that have added to the complexity and increased our understanding of WAS-related diseases and immunoactinopathies.
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Affiliation(s)
- Rhaissa Calixto Vieira
- Department of Microbiology, Tumor and Cell biology, Karolinska Institutet, Stockholm, Sweden
| | - Lia Goncalves Pinho
- Department of Microbiology, Tumor and Cell biology, Karolinska Institutet, Stockholm, Sweden
| | - Lisa S Westerberg
- Department of Microbiology, Tumor and Cell biology, Karolinska Institutet, Stockholm, Sweden
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5
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Deciphering actin remodelling in immune cells through the prism of actin-related inborn errors of immunity. Eur J Cell Biol 2023; 102:151283. [PMID: 36525824 DOI: 10.1016/j.ejcb.2022.151283] [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: 06/30/2022] [Revised: 11/14/2022] [Accepted: 11/14/2022] [Indexed: 12/14/2022] Open
Abstract
Actin cytoskeleton remodelling drives cell motility, cell to cell contacts, as well as membrane and organelle dynamics. Those cellular activities operate at a particularly high pace in immune cells since these cells migrate through various tissues, interact with multiple cellular partners, ingest microorganisms and secrete effector molecules. The central and multifaceted role of actin cytoskeleton remodelling in sustaining immune cell tasks in humans is highlighted by rare inborn errors of immunity due to mutations in genes encoding proximal and distal actin regulators. In line with the specificity of some of the actin-based processes at work in immune cells, the expression of some of the affected genes, such as WAS, ARPC1B and HEM1 is restricted to the hematopoietic compartment. Exploration of these natural deficiencies highlights the fact that the molecular control of actin remodelling is tuned distinctly in the various subsets of myeloid and lymphoid immune cells and sustains different networks associated with a vast array of specialized tasks. Furthermore, defects in individual actin remodelling proteins are usually associated with partial cellular impairments highlighting the plasticity of actin cytoskeleton remodelling. This review covers the roles of disease-associated actin regulators in promoting the actin-based processes of immune cells. It focuses on the specific molecular function of those regulators across various immune cell subsets and in response to different stimuli. Given the fact that numerous immune-related actin defects have only been characterized recently, we further discuss the challenges lying ahead to decipher the underlying patho-mechanisms.
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Sasahara Y, Wada T, Morio T. Impairment of cytokine production following immunological synapse formation in patients with Wiskott-Aldrich syndrome and leukocyte adhesion deficiency type 1. Clin Immunol 2022; 242:109098. [PMID: 35973636 DOI: 10.1016/j.clim.2022.109098] [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: 05/21/2022] [Revised: 07/30/2022] [Accepted: 08/07/2022] [Indexed: 11/03/2022]
Abstract
T cells following immunological synapse (IS) formation with antigen-presenting cells produce multiple cytokines through T cell receptor, integrin, and costimulatory signaling. Here, we investigated the cytokine profiles following IS formation in response to staphylococcal superantigen exposure in three adolescent patients with classical Wiskott-Aldrich syndrome (WAS) and in one patient with leukocyte adhesion deficiency (LAD) type 1. All WAS patients showed lower Th1 and Th2-skewed cytokine production; similar results were observed in the flow cytometric analysis of IFNγ- and IL-4-producing T cells. The patient with LAD type 1 with somatic mosaicism in 2% of CD8+ T cells showed lower Th1 and Th2 cytokine production than healthy controls. The patients with WAS were susceptible to infections and atopic manifestations, and the patients with LAD type 1 showed cold abscess on their skin, our findings using patient samples provide clinical insights into the mechanisms underlying immunodeficiency related to the symptoms of each disease.
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Affiliation(s)
- Yoji Sasahara
- Department of Pediatrics, Tohoku University Graduate School of Medicine, Miyagi, Japan.
| | - Taizo Wada
- Department of Pediatrics, School of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Ishikawa, Japan
| | - Tomohiro Morio
- Department of Pediatrics and Developmental Biology, Graduate School of Medical Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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7
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Wang MS, Hu Y, Sanchez EE, Xie X, Roy NH, de Jesus M, Winer BY, Zale EA, Jin W, Sachar C, Lee JH, Hong Y, Kim M, Kam LC, Salaita K, Huse M. Mechanically active integrins target lytic secretion at the immune synapse to facilitate cellular cytotoxicity. Nat Commun 2022; 13:3222. [PMID: 35680882 PMCID: PMC9184626 DOI: 10.1038/s41467-022-30809-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 05/19/2022] [Indexed: 01/25/2023] Open
Abstract
Cytotoxic lymphocytes fight pathogens and cancer by forming immune synapses with infected or transformed target cells and then secreting cytotoxic perforin and granzyme into the synaptic space, with potent and specific killing achieved by this focused delivery. The mechanisms that establish the precise location of secretory events, however, remain poorly understood. Here we use single cell biophysical measurements, micropatterning, and functional assays to demonstrate that localized mechanotransduction helps define the position of secretory events within the synapse. Ligand-bound integrins, predominantly the αLβ2 isoform LFA-1, function as spatial cues to attract lytic granules containing perforin and granzyme and induce their fusion with the plasma membrane for content release. LFA-1 is subjected to pulling forces within secretory domains, and disruption of these forces via depletion of the adaptor molecule talin abrogates cytotoxicity. We thus conclude that lymphocytes employ an integrin-dependent mechanical checkpoint to enhance their cytotoxic power and fidelity.
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Affiliation(s)
- Mitchell S Wang
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Pharmacology Program, Weill-Cornell Graduate School of Medical Sciences, New York, NY, USA
| | - Yuesong Hu
- Department of Chemistry, Emory University, Atlanta, GA, USA
| | - Elisa E Sanchez
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Biochemistry and Molecular Biology Program, Weill-Cornell Graduate School of Medical Sciences, New York, NY, USA
| | - Xihe Xie
- Neuroscience Program, Weill-Cornell Graduate School of Medical Sciences, New York, NY, USA
| | - Nathan H Roy
- Department of Microbiology and Immunology, State University of New York Upstate Medical University, Syracuse, NY, USA
| | - Miguel de Jesus
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Benjamin Y Winer
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Elizabeth A Zale
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Weiyang Jin
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Chirag Sachar
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Joanne H Lee
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Yeonsun Hong
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA
| | - Minsoo Kim
- Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, NY, USA
| | - Lance C Kam
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Khalid Salaita
- Department of Chemistry, Emory University, Atlanta, GA, USA
| | - Morgan Huse
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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8
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Long-term safety and efficacy of lentiviral hematopoietic stem/progenitor cell gene therapy for Wiskott-Aldrich syndrome. Nat Med 2022; 28:71-80. [PMID: 35075289 PMCID: PMC8799465 DOI: 10.1038/s41591-021-01641-x] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 11/24/2021] [Indexed: 12/14/2022]
Abstract
Patients with Wiskott–Aldrich syndrome (WAS) lacking a human leukocyte antigen-matched donor may benefit from gene therapy through the provision of gene-corrected, autologous hematopoietic stem/progenitor cells. Here, we present comprehensive, long-term follow-up results (median follow-up, 7.6 years) (phase I/II trial no. NCT02333760) for eight patients with WAS having undergone phase I/II lentiviral vector-based gene therapy trials (nos. NCT01347346 and NCT01347242), with a focus on thrombocytopenia and autoimmunity. Primary outcomes of the long-term study were to establish clinical and biological safety, efficacy and tolerability by evaluating the incidence and type of serious adverse events and clinical status and biological parameters including lentiviral genomic integration sites in different cell subpopulations from 3 years to 15 years after gene therapy. Secondary outcomes included monitoring the need for additional treatment and T cell repertoire diversity. An interim analysis shows that the study meets the primary outcome criteria tested given that the gene-corrected cells engrafted stably, and no serious treatment-associated adverse events occurred. Overall, severe infections and eczema resolved. Autoimmune disorders and bleeding episodes were significantly less frequent, despite only partial correction of the platelet compartment. The results suggest that lentiviral gene therapy provides sustained clinical benefits for patients with WAS. Long-term monitoring of patients with Wiskott–Aldrich syndrome following lentiviral gene therapy shows a safe profile and a reduction in the frequency of autoimmune manifestations and bleeding events, despite incomplete platelet reconstitution.
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9
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Prunier G, Chaves B, Lacouture C, Dupré L. Metrics of 2D immunological synapses in human T cells via high-content confocal cell imaging. Methods Cell Biol 2022. [PMID: 37516520 DOI: 10.1016/bs.mcb.2022.07.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Immunological synapses (IS) are the privileged site of complex information transfer between T cells and antigen presenting cells. IS are highly structured in terms of actin and tubulin cytoskeleton organization, receptor and proximal signal patterning, and intracellular organelle polarization. The magnitude and quality of T cell responses upon antigen recognition is dependent on IS molecular organization. For that reason, methods to precisely assess IS parameters are crucial to monitor T cell activation and function in health and disease, but also for T cell centered therapeutic intervention. Confocal and super-resolution microscopy approaches have allowed to characterize the complex structure of the T cell IS. However, those approaches suffer from a low-throughput and low-content format precluding multi-parametric classification of IS across large numbers of samples or stimulatory conditions. Here, we present a protocol of high-content confocal cell imaging in a 384-well plate format adapted to the unbiased analysis of primary T cells forming IS over pre-coated stimulatory molecules. The protocol focuses on the staining of F-actin, pericentrin and granzyme B in CD8+ T cells, but is transposable to other IS molecular markers and lymphocyte subsets. We discuss potential applications offered by the multi-parametric characterization of T cell IS in a high-throughput format.
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10
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Abstract
The elimination of infected or cancerous cells by CD8+ cytotoxic T lymphocytes (CTL) is a crucial effector mechanism of the immune system. Upon antigen recognition, CTL stop migrating, establish a tight contact with target cells and deliver cytotoxic molecules such as perforin and granzymes that lead to target cell apoptosis. The ability of CTL to control a population of infected cells or a tumor depends on multiple parameters, such as the relative numbers of CTL and target cells, the intrinsic cytotoxic activity of CTL, the intrinsic resistance of target cells and the repertoire of immune checkpoints tuning cytotoxic activity at the CTL:target cell interface. In this context, in vitro assays to precisely measure CTL:target cell interactions and cytotoxic activity over time are required to monitor natural or therapeutic responses. We here present an image-based method that allows recording of positions and survival of CTL and target cells over time in a high-throughput format. The protocol relies on the staining of CTL and target cells with fluorescent dyes and the automated imaging of cells deposited in wells of a 384-well plate with an automated cell imaging device. We discuss potential applications offered by the kinetic assessment of CTL cytotoxic activity in a high-throughput format.
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11
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Kamnev A, Lacouture C, Fusaro M, Dupré L. Molecular Tuning of Actin Dynamics in Leukocyte Migration as Revealed by Immune-Related Actinopathies. Front Immunol 2021; 12:750537. [PMID: 34867982 PMCID: PMC8634686 DOI: 10.3389/fimmu.2021.750537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 10/12/2021] [Indexed: 01/13/2023] Open
Abstract
Motility is a crucial activity of immune cells allowing them to patrol tissues as they differentiate, sample or exchange information, and execute their effector functions. Although all immune cells are highly migratory, each subset is endowed with very distinct motility patterns in accordance with functional specification. Furthermore individual immune cell subsets adapt their motility behaviour to the surrounding tissue environment. This review focuses on how the generation and adaptation of diversified motility patterns in immune cells is sustained by actin cytoskeleton dynamics. In particular, we review the knowledge gained through the study of inborn errors of immunity (IEI) related to actin defects. Such pathologies are unique models that help us to uncover the contribution of individual actin regulators to the migration of immune cells in the context of their development and function.
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Affiliation(s)
- Anton Kamnev
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Claire Lacouture
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France.,Laboratoire De Physique Théorique, IRSAMC, Université De Toulouse (UPS), CNRS, Toulouse, France
| | - Mathieu Fusaro
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
| | - Loïc Dupré
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,Department of Dermatology, Medical University of Vienna, Vienna, Austria.,Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
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12
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Targeting the actin nucleation promoting factor WASp provides a therapeutic approach for hematopoietic malignancies. Nat Commun 2021; 12:5581. [PMID: 34552085 PMCID: PMC8458504 DOI: 10.1038/s41467-021-25842-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 09/03/2021] [Indexed: 12/24/2022] Open
Abstract
Cancer cells depend on actin cytoskeleton rearrangement to carry out hallmark malignant functions including activation, proliferation, migration and invasiveness. Wiskott–Aldrich Syndrome protein (WASp) is an actin nucleation-promoting factor and is a key regulator of actin polymerization in hematopoietic cells. The involvement of WASp in malignancies is incompletely understood. Since WASp is exclusively expressed in hematopoietic cells, we performed in silico screening to identify small molecule compounds (SMCs) that bind WASp and promote its degradation. We describe here one such identified molecule; this WASp-targeting SMC inhibits key WASp-dependent actin processes in several types of hematopoietic malignancies in vitro and in vivo without affecting naïve healthy cells. This small molecule demonstrates limited toxicity and immunogenic effects, and thus, might serve as an effective strategy to treat specific hematopoietic malignancies in a safe and precisely targeted manner. Cancer cells proliferate and invade via cytoskeletal proteins such as WASp, exclusively expressed in hematopoietic cells. Here the authors show a specific small molecule compound inhibiting cancer cell activity by WASp degradation and demonstrating its therapeutic potential in vitro and in vivo.
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German Y, Vulliard L, Kamnev A, Pfajfer L, Huemer J, Mautner AK, Rubio A, Kalinichenko A, Boztug K, Ferrand A, Menche J, Dupré L. Morphological profiling of human T and NK lymphocytes by high-content cell imaging. Cell Rep 2021; 36:109318. [PMID: 34233185 DOI: 10.1016/j.celrep.2021.109318] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 02/25/2021] [Accepted: 06/07/2021] [Indexed: 01/21/2023] Open
Abstract
The immunological synapse is a complex structure that decodes stimulatory signals into adapted lymphocyte responses. It is a unique window to monitor lymphocyte activity because of development of systematic quantitative approaches. Here we demonstrate the applicability of high-content imaging to human T and natural killer (NK) cells and develop a pipeline for unbiased analysis of high-definition morphological profiles. Our approach reveals how distinct facets of actin cytoskeleton remodeling shape immunological synapse architecture and affect lytic granule positioning. Morphological profiling of CD8+ T cells from immunodeficient individuals allows discrimination of the roles of the ARP2/3 subunit ARPC1B and the ARP2/3 activator Wiskott-Aldrich syndrome protein (WASP) in immunological synapse assembly. Single-cell analysis further identifies uncoupling of lytic granules and F-actin radial distribution in ARPC1B-deficient lymphocytes. Our study provides a foundation for development of morphological profiling as a scalable approach to monitor primary lymphocyte responsiveness and to identify complex aspects of lymphocyte micro-architecture.
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Affiliation(s)
- Yolla German
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM UMR1291, CNRS UMR5051, Toulouse III Paul Sabatier University, Toulouse, France; Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria
| | - Loan Vulliard
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Structural and Computational Biology, Max Perutz Labs, University of Vienna, Vienna, Austria
| | - Anton Kamnev
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria; Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Laurène Pfajfer
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM UMR1291, CNRS UMR5051, Toulouse III Paul Sabatier University, Toulouse, France; Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria
| | - Jakob Huemer
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria; St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria
| | - Anna-Katharina Mautner
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria; Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Aude Rubio
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, 31024 Toulouse, France
| | - Artem Kalinichenko
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria; St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria
| | - Kaan Boztug
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria; CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria; Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria; St. Anna Children's Hospital, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Audrey Ferrand
- IRSD, Université de Toulouse, INSERM, INRA, ENVT, UPS, 31024 Toulouse, France
| | - Jörg Menche
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria; Department of Structural and Computational Biology, Max Perutz Labs, University of Vienna, Vienna, Austria; Faculty of Mathematics, University of Vienna, Vienna, Austria
| | - Loïc Dupré
- Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM UMR1291, CNRS UMR5051, Toulouse III Paul Sabatier University, Toulouse, France; Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria; Department of Dermatology, Medical University of Vienna, Vienna, Austria.
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14
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Dupré L, Boztug K, Pfajfer L. Actin Dynamics at the T Cell Synapse as Revealed by Immune-Related Actinopathies. Front Cell Dev Biol 2021; 9:665519. [PMID: 34249918 PMCID: PMC8266300 DOI: 10.3389/fcell.2021.665519] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/06/2021] [Indexed: 01/21/2023] Open
Abstract
The actin cytoskeleton is composed of dynamic filament networks that build adaptable local architectures to sustain nearly all cellular activities in response to a myriad of stimuli. Although the function of numerous players that tune actin remodeling is known, the coordinated molecular orchestration of the actin cytoskeleton to guide cellular decisions is still ill defined. T lymphocytes provide a prototypical example of how a complex program of actin cytoskeleton remodeling sustains the spatio-temporal control of key cellular activities, namely antigen scanning and sensing, as well as polarized delivery of effector molecules, via the immunological synapse. We here review the unique knowledge on actin dynamics at the T lymphocyte synapse gained through the study of primary immunodeficiences caused by mutations in genes encoding actin regulatory proteins. Beyond the specific roles of individual actin remodelers, we further develop the view that these operate in a coordinated manner and are an integral part of multiple signaling pathways in T lymphocytes.
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Affiliation(s)
- Loïc Dupré
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria.,Department of Dermatology, Medical University of Vienna, Vienna, Austria.,Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France
| | - Kaan Boztug
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.,St. Anna Children's Hospital, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Laurène Pfajfer
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases (LBI-RUD), Vienna, Austria.,Department of Dermatology, Medical University of Vienna, Vienna, Austria.,Toulouse Institute for Infectious and Inflammatory Diseases (INFINITy), INSERM, CNRS, Toulouse III Paul Sabatier University, Toulouse, France.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria
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15
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RhoG deficiency abrogates cytotoxicity of human lymphocytes and causes hemophagocytic lymphohistiocytosis. Blood 2021; 137:2033-2045. [PMID: 33513601 DOI: 10.1182/blood.2020008738] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 01/11/2021] [Indexed: 11/20/2022] Open
Abstract
Exocytosis of cytotoxic granules (CG) by lymphocytes is required for the elimination of infected and malignant cells. Impairments in this process underly a group of diseases with dramatic hyperferritinemic inflammation termed hemophagocytic lymphohistiocytosis (HLH). Although genetic and functional studies of HLH have identified proteins controlling distinct steps of CG exocytosis, the molecular mechanisms that spatiotemporally coordinate CG release remain partially elusive. We studied a patient exhibiting characteristic clinical features of HLH associated with markedly impaired cytotoxic T lymphocyte (CTL) and natural killer (NK) cell exocytosis functions, who beared biallelic deleterious mutations in the gene encoding the small GTPase RhoG. Experimental ablation of RHOG in a model cell line and primary CTLs from healthy individuals uncovered a hitherto unappreciated role of RhoG in retaining CGs in the vicinity of the plasma membrane (PM), a fundamental prerequisite for CG exocytotic release. We discovered that RhoG engages in a protein-protein interaction with Munc13-4, an exocytosis protein essential for CG fusion with the PM. We show that this interaction is critical for docking of Munc13-4+ CGs to the PM and subsequent membrane fusion and release of CG content. Thus, our study illuminates RhoG as a novel essential regulator of human lymphocyte cytotoxicity and provides the molecular pathomechanism behind the identified here and previously unreported genetically determined form of HLH.
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16
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Wabnitz GH, Honus S, Habicht J, Orlik C, Kirchgessner H, Samstag Y. LFA-1 cluster formation in T-cells depends on L-plastin phosphorylation regulated by P90 RSK and PP2A. Cell Mol Life Sci 2021; 78:3543-3564. [PMID: 33449151 PMCID: PMC11072591 DOI: 10.1007/s00018-020-03744-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 11/21/2020] [Accepted: 12/15/2020] [Indexed: 10/25/2022]
Abstract
The integrin LFA-1 is crucial for T-cell/ APC interactions and sensitive recognition of antigens. Precise nanoscale organization and valency regulation of LFA-1 are mandatory for an appropriate function of the immune system. While the inside-out signals regulating the LFA-1 affinity are well described, the molecular mechanisms controlling LFA-1 avidity are still not fully understood. Here, we show that activation of the actin-bundling protein L-plastin (LPL) through phosphorylation at serine-5 enables the formation of clusters containing LFA-1 in high-affinity conformation. Phosphorylation of LPL is induced by an nPKC-MEK-p90RSK pathway and counter-regulated by the serine-threonine phosphatase PP2A. Interestingly, recruitment of LFA-1 into the T-cell/APC contact zone is not affected by LPL phosphorylation. Instead, for this process, activation of the actin-remodeling protein cofilin through dephosphorylation is essential. Together, this study reveals a dichotomic spatial regulation of LFA-1 clustering and microscale movement in T-cells by two different actin-binding proteins, LPL and cofilin.
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Affiliation(s)
- Guido H Wabnitz
- Institute of Immunology, Section Molecular Immunology, Heidelberg University, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany.
| | - Sibylle Honus
- Institute of Immunology, Section Molecular Immunology, Heidelberg University, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Jüri Habicht
- Institute of Immunology, Section Molecular Immunology, Heidelberg University, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Christian Orlik
- Institute of Immunology, Section Molecular Immunology, Heidelberg University, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Henning Kirchgessner
- Institute of Immunology, Section Molecular Immunology, Heidelberg University, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
| | - Yvonne Samstag
- Institute of Immunology, Section Molecular Immunology, Heidelberg University, Im Neuenheimer Feld 305, 69120, Heidelberg, Germany
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17
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Kritikou JS, Oliveira MM, Record J, Saeed MB, Nigam SM, He M, Keszei M, Wagner AK, Brauner H, Sendel A, Sedimbi SK, Rentouli S, Lane DP, Snapper SB, Kärre K, Vandenberghe P, Orange JS, Westerberg LS. Constitutive activation of WASp leads to abnormal cytotoxic cells with increased granzyme B and degranulation response to target cells. JCI Insight 2021; 6:140273. [PMID: 33621210 PMCID: PMC8026198 DOI: 10.1172/jci.insight.140273] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 02/17/2021] [Indexed: 11/23/2022] Open
Abstract
X-linked neutropenia (XLN) is caused by gain-of-function mutations in the actin regulator Wiskott-Aldrich Syndrome protein (WASp). XLN patients have reduced numbers of cytotoxic cells in peripheral blood; however, their capacity to kill tumor cells remains to be determined. Here, we examined NK and T cells from 2 patients with XLN harboring the activating WASpL270P mutation. XLN patient NK and T cells had increased granzyme B content and elevated degranulation and IFN-γ production when compared with healthy control cells. Murine WASpL272P NK and T cells formed stable synapses with YAC-1 tumor cells and anti-CD3/CD28-coated beads, respectively. WASpL272P mouse T cells had normal degranulation and cytokine response whereas WASpL272P NK cells showed an enhanced response. Imaging experiments revealed that while WASpL272P CD8+ T cells had increased accumulation of actin upon TCR activation, WASpL272P NK cells had normal actin accumulation at lytic synapses triggered through NKp46 signaling but had impaired response to lymphocyte function associated antigen-1 engagement. When compared with WT mice, WASpL272P mice showed reduced growth of B16 melanoma and increased capacity to reject MHC class I-deficient cells. Together, our data suggest that cytotoxic cells with constitutively active WASp have an increased capacity to respond to and kill tumor cells.
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Affiliation(s)
| | | | - Julien Record
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | - Mezida B. Saeed
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | - Saket M. Nigam
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | - Minghui He
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | - Marton Keszei
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | - Arnika K. Wagner
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | - Hanna Brauner
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
- Department of Medicine, Solna, Division of Rheumatology, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Anton Sendel
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | | | | | - David P. Lane
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | - Scott B. Snapper
- Gastroenterology Division, Children’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Klas Kärre
- Department of Microbiology Tumor and Cell Biology, Biomedicum C7, and
| | | | - Jordan S. Orange
- Department of Pediatrics, NewYork-Presbyterian Morgan Stanley Children’s Hospital, Columbia University Vagelos College of Physicians and Surgeons, New York, New York, USA
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18
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Douanne T, Griffiths GM. Cytoskeletal control of the secretory immune synapse. Curr Opin Cell Biol 2021; 71:87-94. [PMID: 33711784 DOI: 10.1016/j.ceb.2021.02.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/30/2021] [Accepted: 02/04/2021] [Indexed: 01/10/2023]
Abstract
The immune synapse is a very important but often transient site for secretion between immune cells. How secretion is controlled in a coordinated fashion at the synapse is a subject of much investigation. Two key mechanisms are the polarisation of the centrosome and rapid actin dynamics across the immune synapses that form between interacting immune cells. In recent years it has become clear that different immune cells utilise a diversity of immune synapses that modify these mechanisms in order to optimise specialised modes of secretion. Here we describe some of the latest research, focusing on regulation by centrosomal and actin dynamics in a variety of immune cells.
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Affiliation(s)
- Tiphaine Douanne
- Cambridge Institute for Medical Research, Cambridge Biomedical Campus, University of Cambridge, Cambridge, CB2 0XY UK
| | - Gillian M Griffiths
- Cambridge Institute for Medical Research, Cambridge Biomedical Campus, University of Cambridge, Cambridge, CB2 0XY UK.
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19
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Mastio J, Saeed MB, Wurzer H, Krecke M, Westerberg LS, Thomas C. Higher Incidence of B Cell Malignancies in Primary Immunodeficiencies: A Combination of Intrinsic Genomic Instability and Exocytosis Defects at the Immunological Synapse. Front Immunol 2020; 11:581119. [PMID: 33240268 PMCID: PMC7680899 DOI: 10.3389/fimmu.2020.581119] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 10/09/2020] [Indexed: 12/11/2022] Open
Abstract
Congenital defects of the immune system called primary immunodeficiency disorders (PID) describe a group of diseases characterized by a decrease, an absence, or a malfunction of at least one part of the immune system. As a result, PID patients are more prone to develop life-threatening complications, including cancer. PID currently include over 400 different disorders, however, the variety of PID-related cancers is narrow. We discuss here reasons for this clinical phenotype. Namely, PID can lead to cell intrinsic failure to control cell transformation, failure to activate tumor surveillance by cytotoxic cells or both. As the most frequent tumors seen among PID patients stem from faulty lymphocyte development leading to leukemia and lymphoma, we focus on the extensive genomic alterations needed to create the vast diversity of B and T lymphocytes with potential to recognize any pathogen and why defects in these processes lead to malignancies in the immunodeficient environment of PID patients. In the second part of the review, we discuss PID affecting tumor surveillance and especially membrane trafficking defects caused by altered exocytosis and regulation of the actin cytoskeleton. As an impairment of these membrane trafficking pathways often results in dysfunctional effector immune cells, tumor cell immune evasion is elevated in PID. By considering new anti-cancer treatment concepts, such as transfer of genetically engineered immune cells, restoration of anti-tumor immunity in PID patients could be an approach to complement standard therapies.
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Affiliation(s)
- Jérôme Mastio
- Department of Oncology, Cytoskeleton and Cancer Progression, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Mezida B Saeed
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Hannah Wurzer
- Department of Oncology, Cytoskeleton and Cancer Progression, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Max Krecke
- Department of Oncology, Cytoskeleton and Cancer Progression, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Lisa S Westerberg
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Clément Thomas
- Department of Oncology, Cytoskeleton and Cancer Progression, Luxembourg Institute of Health, Luxembourg City, Luxembourg
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20
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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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21
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Biolato AM, Filali L, Wurzer H, Hoffmann C, Gargiulo E, Valitutti S, Thomas C. Actin remodeling and vesicular trafficking at the tumor cell side of the immunological synapse direct evasion from cytotoxic lymphocytes. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 356:99-130. [PMID: 33066877 DOI: 10.1016/bs.ircmb.2020.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Andrea Michela Biolato
- Cytoskeleton and Cancer Progression, Department of Oncology, Luxembourg Institute of Health, Luxembourg City, Luxembourg; Faculty of Science, Technology and Medicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Liza Filali
- Cancer Research Center of Toulouse, INSERM, Toulouse, France
| | - Hannah Wurzer
- Cytoskeleton and Cancer Progression, Department of Oncology, Luxembourg Institute of Health, Luxembourg City, Luxembourg; Faculty of Science, Technology and Medicine, University of Luxembourg, Esch-sur-Alzette, Luxembourg
| | - Céline Hoffmann
- Cytoskeleton and Cancer Progression, Department of Oncology, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Ernesto Gargiulo
- Tumor-Stroma Interactions, Department of Oncology, Luxembourg Institute of Health, Luxembourg City, Luxembourg
| | - Salvatore Valitutti
- Cancer Research Center of Toulouse, INSERM, Toulouse, France; Department of Pathology, Institut Universitaire du Cancer-Oncopole, Toulouse, France.
| | - Clément Thomas
- Cytoskeleton and Cancer Progression, Department of Oncology, Luxembourg Institute of Health, Luxembourg City, Luxembourg.
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22
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Janssen E, Tohme M, Butts J, Giguere S, Sage PT, Velázquez FE, Kam C, Milin E, Das M, Sobh A, Al-Tamemi S, Luscinskas FW, Batista F, Geha RS. DOCK8 is essential for LFA-1-dependent positioning of T follicular helper cells in germinal centers. JCI Insight 2020; 5:134508. [PMID: 32573493 DOI: 10.1172/jci.insight.134508] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 06/18/2020] [Indexed: 01/07/2023] Open
Abstract
T follicular helper (Tfh) cell migration into germinal centers (GCs) is essential for the generation of GC B cells and antibody responses to T cell-dependent (TD) antigens. This process requires interactions between lymphocyte function-associated antigen 1 (LFA-1) on Tfh cells and ICAMs on B cells. The mechanisms underlying defective antibody responses to TD antigens in DOCK8 deficiency are incompletely understood. We show that mice selectively lacking DOCK8 in T cells had impaired IgG antibody responses to TD antigens, decreased GC size, and reduced numbers of GC B cells. However, they developed normal numbers of Tfh cells with intact capacity for driving B cell differentiation into a GC phenotype in vitro. Notably, migration of DOCK8-deficient T cells into GCs was defective. Following T cell receptor (TCR)/CD3 ligation, DOCK8-deficient T cells had impaired LFA-1 activation and reduced binding to ICAM-1. Our results therefore indicate that DOCK8 is important for LFA-1-dependent positioning of Tfh cells in GCs, and thereby the generation of GC B cells and IgG antibody responses to TD antigen.
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Affiliation(s)
- Erin Janssen
- Division of Immunology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Mira Tohme
- Division of Immunology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Jordan Butts
- Division of Immunology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Sophie Giguere
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard Medical School, Cambridge, Massachusetts, USA
| | - Peter T Sage
- Transplantation Research Center, Renal Division, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Francisco E Velázquez
- Center for Excellence in Vascular Biology, Brigham and Women's Hospital, Departments of Pathology and Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Christy Kam
- Division of Immunology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Elena Milin
- Division of Immunology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Mrinmoy Das
- Division of Immunology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - Ali Sobh
- Department of Pediatrics, Mansoura University Children's Hospital, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | | | - Francis W Luscinskas
- Center for Excellence in Vascular Biology, Brigham and Women's Hospital, Departments of Pathology and Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Facundo Batista
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard Medical School, Cambridge, Massachusetts, USA
| | - Raif S Geha
- Division of Immunology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
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23
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Salzer E, Zoghi S, Kiss MG, Kage F, Rashkova C, Stahnke S, Haimel M, Platzer R, Caldera M, Ardy RC, Hoeger B, Block J, Medgyesi D, Sin C, Shahkarami S, Kain R, Ziaee V, Hammerl P, Bock C, Menche J, Dupré L, Huppa JB, Sixt M, Lomakin A, Rottner K, Binder CJ, Stradal TEB, Rezaei N, Boztug K. The cytoskeletal regulator HEM1 governs B cell development and prevents autoimmunity. Sci Immunol 2020; 5:5/49/eabc3979. [PMID: 32646852 DOI: 10.1126/sciimmunol.abc3979] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 06/04/2020] [Indexed: 12/12/2022]
Abstract
The WAVE regulatory complex (WRC) is crucial for assembly of the peripheral branched actin network constituting one of the main drivers of eukaryotic cell migration. Here, we uncover an essential role of the hematopoietic-specific WRC component HEM1 for immune cell development. Germline-encoded HEM1 deficiency underlies an inborn error of immunity with systemic autoimmunity, at cellular level marked by WRC destabilization, reduced filamentous actin, and failure to assemble lamellipodia. Hem1-/- mice display systemic autoimmunity, phenocopying the human disease. In the absence of Hem1, B cells become deprived of extracellular stimuli necessary to maintain the strength of B cell receptor signaling at a level permissive for survival of non-autoreactive B cells. This shifts the balance of B cell fate choices toward autoreactive B cells and thus autoimmunity.
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Affiliation(s)
- Elisabeth Salzer
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,St. Anna Children's Hospital, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Samaneh Zoghi
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Máté G Kiss
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Frieda Kage
- Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany.,Department of Cell Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Christina Rashkova
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
| | - Stephanie Stahnke
- Department of Cell Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Matthias Haimel
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - René Platzer
- Institute for Hygiene and Applied Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Michael Caldera
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Rico Chandra Ardy
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Birgit Hoeger
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Jana Block
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - David Medgyesi
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria
| | - Celine Sin
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Sepideh Shahkarami
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Medical Genetics Network (MeGeNe), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Renate Kain
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Vahid Ziaee
- Pediatric Rheumatology Research Group, Rheumatology Research Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Pediatrics, Tehran University of Medical Sciences, Tehran, Iran
| | - Peter Hammerl
- Department of Molecular Biology, University of Salzburg, Salzburg, Austria
| | - Christoph Bock
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Jörg Menche
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Loïc Dupré
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,Center for Pathophysiology of Toulouse Purpan, INSERM UMR1043, CNRS UMR5282, Paul Sabatier University, Toulouse, France
| | - Johannes B Huppa
- Institute for Hygiene and Applied Immunology, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Michael Sixt
- Institute of Science and Technology Austria, Klosterneuburg, Austria
| | - Alexis Lomakin
- Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Klemens Rottner
- Division of Molecular Cell Biology, Zoological Institute, Technische Universität Braunschweig, Braunschweig, Germany.,Department of Cell Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Christoph J Binder
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Theresia E B Stradal
- Department of Cell Biology, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Nima Rezaei
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran.,Department of Immunology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.,Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Kaan Boztug
- St. Anna Children's Cancer Research Institute (CCRI), Vienna, Austria. .,Ludwig Boltzmann Institute for Rare and Undiagnosed Diseases, Vienna, Austria.,CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria.,St. Anna Children's Hospital, Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.,Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
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24
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Tamzalit F, Wang MS, Jin W, Tello-Lafoz M, Boyko V, Heddleston JM, Black CT, Kam LC, Huse M. Interfacial actin protrusions mechanically enhance killing by cytotoxic T cells. Sci Immunol 2020; 4:4/33/eaav5445. [PMID: 30902904 DOI: 10.1126/sciimmunol.aav5445] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 02/05/2019] [Indexed: 12/30/2022]
Abstract
Cytotoxic T lymphocytes (CTLs) kill by forming immunological synapses with target cells and secreting toxic proteases and the pore-forming protein perforin into the intercellular space. Immunological synapses are highly dynamic structures that boost perforin activity by applying mechanical force against the target cell. Here, we used high-resolution imaging and microfabrication to investigate how CTLs exert synaptic forces and coordinate their mechanical output with perforin secretion. Using micropatterned stimulatory substrates that enable synapse growth in three dimensions, we found that perforin release occurs at the base of actin-rich protrusions that extend from central and intermediate locations within the synapse. These protrusions, which depended on the cytoskeletal regulator WASP and the Arp2/3 actin nucleation complex, were required for synaptic force exertion and efficient killing. They also mediated physical deformation of the target cell surface during CTL-target cell interactions. Our results reveal the mechanical basis of cellular cytotoxicity and highlight the functional importance of dynamic, three-dimensional architecture in immune cell-cell interfaces.
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Affiliation(s)
- Fella Tamzalit
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Mitchell S Wang
- Pharmacology Graduate Program, Weill Cornell Medical College, New York, NY, USA
| | - Weiyang Jin
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Maria Tello-Lafoz
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Vitaly Boyko
- Molecular Cytology Core Facility, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - John M Heddleston
- Advanced Imaging Center, Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA
| | - Charles T Black
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Lance C Kam
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Morgan Huse
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
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25
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Centrioles control the capacity, but not the specificity, of cytotoxic T cell killing. Proc Natl Acad Sci U S A 2020; 117:4310-4319. [PMID: 32041868 DOI: 10.1073/pnas.1913220117] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Immunological synapse formation between cytotoxic T lymphocytes (CTLs) and the target cells they aim to destroy is accompanied by reorientation of the CTL centrosome to a position beneath the synaptic membrane. Centrosome polarization is thought to enhance the potency and specificity of killing by driving lytic granule fusion at the synapse and thereby the release of perforin and granzymes toward the target cell. To test this model, we employed a genetic strategy to delete centrioles, the core structural components of the centrosome. Centriole deletion altered microtubule architecture as expected but surprisingly had no effect on lytic granule polarization and directional secretion. Nevertheless, CTLs lacking centrioles did display substantially reduced killing potential, which was associated with defects in both lytic granule biogenesis and synaptic actin remodeling. These results reveal an unexpected role for the intact centrosome in controlling the capacity but not the specificity of cytotoxic killing.
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26
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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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27
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Saeed MB, Record J, Westerberg LS. Two sides of the coin: Cytoskeletal regulation of immune synapses in cancer and primary immune deficiencies. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 356:1-97. [DOI: 10.1016/bs.ircmb.2020.06.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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28
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Randzavola LO, Strege K, Juzans M, Asano Y, Stinchcombe JC, Gawden-Bone CM, Seaman MN, Kuijpers TW, Griffiths GM. Loss of ARPC1B impairs cytotoxic T lymphocyte maintenance and cytolytic activity. J Clin Invest 2019. [PMID: 31710310 DOI: 10.1172/jci129388)] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
CD8 cytotoxic T lymphocytes (CTLs) rely on rapid reorganization of the branched F-actin network to drive the polarized secretion of lytic granules, initiating target cell death during the adaptive immune response. Branched F-actin is generated by the nucleation factor actin-related protein 2/3 (Arp2/3) complex. Patients with mutations in the actin-related protein complex 1B (ARPC1B) subunit of Arp2/3 show combined immunodeficiency, with symptoms of immune dysregulation, including recurrent viral infections and reduced CD8+ T cell count. Here, we show that loss of ARPC1B led to loss of CTL cytotoxicity, with the defect arising at 2 different levels. First, ARPC1B is required for lamellipodia formation, cell migration, and actin reorganization across the immune synapse. Second, we found that ARPC1B is indispensable for the maintenance of TCR, CD8, and GLUT1 membrane proteins at the plasma membrane of CTLs, as recycling via the retromer and WASH complexes was impaired in the absence of ARPC1B. Loss of TCR, CD8, and GLUT1 gave rise to defects in T cell signaling and proliferation upon antigen stimulation of ARPC1B-deficient CTLs, leading to a progressive loss of CD8+ T cells. This triggered an activation-induced immunodeficiency of CTL activity in ARPC1B-deficient patients, which could explain the susceptibility to severe and prolonged viral infections.
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Affiliation(s)
- Lyra O Randzavola
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Katharina Strege
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Marie Juzans
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Yukako Asano
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Jane C Stinchcombe
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Christian M Gawden-Bone
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Matthew Nj Seaman
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Taco W Kuijpers
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Department of Pediatric Immunology, Rheumatology and Infectious Disease, Emma Children's Hospital, Medical Center Amsterdam University, Amsterdam, Netherlands
| | - Gillian M Griffiths
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
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29
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Randzavola LO, Strege K, Juzans M, Asano Y, Stinchcombe JC, Gawden-Bone CM, Seaman MN, Kuijpers TW, Griffiths GM. Loss of ARPC1B impairs cytotoxic T lymphocyte maintenance and cytolytic activity. J Clin Invest 2019; 129:5600-5614. [PMID: 31710310 PMCID: PMC6877333 DOI: 10.1172/jci129388] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 09/10/2019] [Indexed: 12/30/2022] Open
Abstract
CD8 cytotoxic T lymphocytes (CTLs) rely on rapid reorganization of the branched F-actin network to drive the polarized secretion of lytic granules, initiating target cell death during the adaptive immune response. Branched F-actin is generated by the nucleation factor actin-related protein 2/3 (Arp2/3) complex. Patients with mutations in the actin-related protein complex 1B (ARPC1B) subunit of Arp2/3 show combined immunodeficiency, with symptoms of immune dysregulation, including recurrent viral infections and reduced CD8+ T cell count. Here, we show that loss of ARPC1B led to loss of CTL cytotoxicity, with the defect arising at 2 different levels. First, ARPC1B is required for lamellipodia formation, cell migration, and actin reorganization across the immune synapse. Second, we found that ARPC1B is indispensable for the maintenance of TCR, CD8, and GLUT1 membrane proteins at the plasma membrane of CTLs, as recycling via the retromer and WASH complexes was impaired in the absence of ARPC1B. Loss of TCR, CD8, and GLUT1 gave rise to defects in T cell signaling and proliferation upon antigen stimulation of ARPC1B-deficient CTLs, leading to a progressive loss of CD8+ T cells. This triggered an activation-induced immunodeficiency of CTL activity in ARPC1B-deficient patients, which could explain the susceptibility to severe and prolonged viral infections.
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Affiliation(s)
- Lyra O. Randzavola
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Katharina Strege
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Marie Juzans
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Yukako Asano
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Jane C. Stinchcombe
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | | | - Matthew N.J. Seaman
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
| | - Taco W. Kuijpers
- Department of Blood Cell Research, Sanquin Research and Landsteiner Laboratory, Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
- Department of Pediatric Immunology, Rheumatology and Infectious Disease, Emma Children’s Hospital, Medical Center Amsterdam University, Amsterdam, Netherlands
| | - Gillian M. Griffiths
- Cambridge Institute for Medical Research, University of Cambridge, Cambridge, United Kingdom
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30
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Colin-York H, Kumari S, Barbieri L, Cords L, Fritzsche M. Distinct actin cytoskeleton behaviour in primary and immortalised T-cells. J Cell Sci 2019; 133:jcs.232322. [PMID: 31413071 PMCID: PMC6898998 DOI: 10.1242/jcs.232322] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 07/19/2019] [Indexed: 12/30/2022] Open
Abstract
Cytoskeletal actin dynamics are crucial for the activation of T-cells. Immortalised Jurkat T-cells have been the model system of choice to examine and correlate the dynamics of the actin cytoskeleton and the immunological synapse leading to T-cell activation. However, it has remained unclear whether immortalised cellular systems, such as Jurkat T-cells can recapitulate the cytoskeletal behaviour of primary T-cells. Studies delineating the cytoskeletal behaviour of Jurkat T-cells in comparison to primary T-cells are lacking. Here, we employ live-cell super-resolution microscopy to investigate the cytoskeletal actin organisation and dynamics of living primary and immortalised Jurkat T-cells at the appropriate spatiotemporal resolution. Under comparable activation conditions, we found differences in the architectural organisation and dynamics of Jurkat and primary mouse and human T-cells. Although the three main actin network architectures in Jurkat T-cells were reminiscent of primary T-cells, there were differences in the organisation and molecular mechanisms underlying these networks. Our results highlight mechanistic distinctions in the T-cell model system most utilised to study cytoskeletal actin dynamics. Summary: The emerging idea that the cytoskeletal and biophysical principles are preserved in primary cells and transformed cell lines, and the two can be used to interchangeably examine synaptic actin characteristics, needs careful reconsideration.
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Affiliation(s)
- Huw Colin-York
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Headley Way, Oxford OX3 9DS, UK
| | - Sudha Kumari
- Koch Institute of Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge 02139, USA
| | - Liliana Barbieri
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Headley Way, Oxford OX3 9DS, UK
| | - Lena Cords
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Headley Way, Oxford OX3 9DS, UK
| | - Marco Fritzsche
- MRC Human Immunology Unit, Weatherall Institute of Molecular Medicine, University of Oxford, Headley Way, Oxford OX3 9DS, UK .,Kennedy Institute for Rheumatology, University of Oxford, Roosevelt Drive, Oxford OX3 7LF, UK
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31
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Wurzer H, Hoffmann C, Al Absi A, Thomas C. Actin Cytoskeleton Straddling the Immunological Synapse between Cytotoxic Lymphocytes and Cancer Cells. Cells 2019; 8:cells8050463. [PMID: 31100864 PMCID: PMC6563383 DOI: 10.3390/cells8050463] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 05/08/2019] [Accepted: 05/13/2019] [Indexed: 02/06/2023] Open
Abstract
The immune system is a fundamental part of the tumor microenvironment. In particular, cytotoxic lymphocytes, such as cytolytic T cells and natural killer cells, control tumor growth and disease progression by interacting and eliminating tumor cells. The actin cytoskeleton of cytotoxic lymphocytes engaged in an immunological synapse has received considerable research attention. It has been recognized as a central mediator of the formation and maturation of the immunological synapse, and its signaling and cytolytic activities. In comparison, fewer studies have explored the organization and function of actin filaments on the target cancer cell side of the immunological synapse. However, there is growing evidence that the actin cytoskeleton of cancer cells also undergoes extensive remodeling upon cytotoxic lymphocyte attack, and that such remodeling can alter physical and functional interactions at the immunological synapse. In this article, we review the current knowledge of actin organization and functions at both sides of the immunological synapse between cytotoxic lymphocytes and cancer cells, with particular focus on synapse formation, signaling and cytolytic activity, and immune evasion.
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Affiliation(s)
- Hannah Wurzer
- Cytoskeleton and Cancer Progression; Laboratory of Experimental Cancer Research, Department of Oncology 84 Val Fleuri, L-1526 Luxembourg City, Luxembourg.
- University of Luxembourg, Faculty of Science, Technology and Communication, 2 Avenue de l'Université, L-4365 Esch-sur-Alzette, Luxembourg.
| | - Céline Hoffmann
- Cytoskeleton and Cancer Progression; Laboratory of Experimental Cancer Research, Department of Oncology 84 Val Fleuri, L-1526 Luxembourg City, Luxembourg.
| | - Antoun Al Absi
- Cytoskeleton and Cancer Progression; Laboratory of Experimental Cancer Research, Department of Oncology 84 Val Fleuri, L-1526 Luxembourg City, Luxembourg.
- University of Strasbourg, 67081 Strasbourg, France.
| | - Clément Thomas
- Cytoskeleton and Cancer Progression; Laboratory of Experimental Cancer Research, Department of Oncology 84 Val Fleuri, L-1526 Luxembourg City, Luxembourg.
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32
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Baumgart F, Arnold AM, Rossboth BK, Brameshuber M, Schütz GJ. What we talk about when we talk about nanoclusters. Methods Appl Fluoresc 2018; 7:013001. [PMID: 30412469 DOI: 10.1088/2050-6120/aaed0f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Superresolution microscopy results have sparked the idea that many membrane proteins are not randomly distributed across the plasma membrane but are instead arranged in nanoclusters. Frequently, these new results seemed to confirm older data based on biochemical and electron microscopy experiments. Recently, however, it was recognized that multiple countings of the very same fluorescently labeled protein molecule can be easily confused with true protein clusters. Various strategies have been developed, which are intended to solve the problem of discriminating true protein clusters from imaging artifacts. We believe that there is currently no perfect algorithm for this problem; instead, different approaches have different strengths and weaknesses. In this review, we discuss single molecule localization microscopy in view of its ability to detect nanoclusters of membrane proteins. To capture the different views on nanoclustering, we chose an unconventional style for this article: we placed its scientific content in the setting of a fictive conference, where five researchers from different fields discuss the problem of detecting and quantifying nanoclusters. Using this style, we feel that the different approaches common for different research areas can be well illustrated. Similarities to a short story by Raymond Carver are not unintentional.
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33
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A Rationale for Mesoscopic Domain Formation in Biomembranes. Biomolecules 2018; 8:biom8040104. [PMID: 30274275 PMCID: PMC6316292 DOI: 10.3390/biom8040104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/04/2018] [Accepted: 09/06/2018] [Indexed: 12/25/2022] Open
Abstract
Cell plasma membranes display a dramatically rich structural complexity characterized by functional sub-wavelength domains with specific lipid and protein composition. Under favorable experimental conditions, patterned morphologies can also be observed in vitro on model systems such as supported membranes or lipid vesicles. Lipid mixtures separating in liquid-ordered and liquid-disordered phases below a demixing temperature play a pivotal role in this context. Protein-protein and protein-lipid interactions also contribute to membrane shaping by promoting small domains or clusters. Such phase separations displaying characteristic length-scales falling in-between the nanoscopic, molecular scale on the one hand and the macroscopic scale on the other hand, are named mesophases in soft condensed matter physics. In this review, we propose a classification of the diverse mechanisms leading to mesophase separation in biomembranes. We distinguish between mechanisms relying upon equilibrium thermodynamics and those involving out-of-equilibrium mechanisms, notably active membrane recycling. In equilibrium, we especially focus on the many mechanisms that dwell on an up-down symmetry breaking between the upper and lower bilayer leaflets. Symmetry breaking is an ubiquitous mechanism in condensed matter physics at the heart of several important phenomena. In the present case, it can be either spontaneous (domain buckling) or explicit, i.e., due to an external cause (global or local vesicle bending properties). Whenever possible, theoretical predictions and simulation results are confronted to experiments on model systems or living cells, which enables us to identify the most realistic mechanisms from a biological perspective.
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34
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Chiang SC, Vergamini SM, Husami A, Neumeier L, Quinn K, Ellerhorst T, Sheppard L, Gifford C, Buchbinder D, Joshi A, Ifversen M, Kleiner GI, Bussel JB, Chandrakasan S, Pesek RD, Pozos TC, Rose MJ, Scurlock AM, Zhang K, Bryceson YT, Bleesing J, Marsh RA. Screening for Wiskott-Aldrich syndrome by flow cytometry. J Allergy Clin Immunol 2018; 142:333-335.e8. [DOI: 10.1016/j.jaci.2018.04.017] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 04/06/2018] [Accepted: 04/18/2018] [Indexed: 12/29/2022]
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35
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Walling BL, Kim M. LFA-1 in T Cell Migration and Differentiation. Front Immunol 2018; 9:952. [PMID: 29774029 PMCID: PMC5943560 DOI: 10.3389/fimmu.2018.00952] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 04/17/2018] [Indexed: 01/21/2023] Open
Abstract
Maintenance of homeostatic immune surveillance and development of effective adaptive immune responses require precise regulation of spatial and temporal lymphocyte trafficking throughout the body to ensure pathogen clearance and memory generation. Dysregulation of lymphocyte activation and migration can lead to impaired adaptive immunity, recurrent infections, and an array of autoimmune diseases and chronic inflammation. Central to the recruitment of T cells, integrins are cell surface receptors that regulate adhesion, signal transduction, and migration. With 24 integrin pairs having been discovered to date, integrins are defined not only by the composition of the heterodimeric pair but by cell-type specific expression and their ligands. Furthermore, integrins not only facilitate adhesion but also induce intracellular signaling and have recently been uncovered as mechanosensors providing additional complexity to the signaling pathways. Among several leukocyte-specific integrins, lymphocyte function-associated antigen-1 (LFA-1 or αLβ2; CD11a/CD18) is a key T cell integrin, which plays a major role in regulating T cell activation and migration. Adhesion to LFA-1's ligand, intracellular adhesion receptor 1 (ICAM-1) facilitates firm endothelium adhesion, prolonged contact with antigen-presenting cells, and binding to target cells for killing. While the downstream signaling pathways utilized by LFA-1 are vastly conserved they allow for highly disparate responses. Here, we summarize the roles of LFA-1 and ongoing studies to better understand its functions and regulation.
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Affiliation(s)
- Brandon L Walling
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, United States
| | - Minsoo Kim
- Department of Microbiology and Immunology, David H. Smith Center for Vaccine Biology and Immunology, University of Rochester, Rochester, NY, United States
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