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Pinho ACO, Barbosa P, Lazaro A, Tralhão JG, Pereira MJ, Paiva A, Laranjeira P, Carvalho E. Identification and characterization of circulating and adipose tissue infiltrated CD20 +T cells from subjects with obesity that undergo bariatric surgery. Immunol Lett 2024; 269:106911. [PMID: 39147242 DOI: 10.1016/j.imlet.2024.106911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 08/10/2024] [Accepted: 08/12/2024] [Indexed: 08/17/2024]
Abstract
T cells play critical roles in adipose tissue (AT) inflammation. The role of CD20+T cell in AT dysfunction and their contributing to insulin resistance (IR) and type 2 diabetes progression, is not known. The aim was to characterize CD20+T cells in omental (OAT), subcutaneous (SAT) and peripheral blood (PB) from subjects with obesity (OB, n = 42), by flow cytometry. Eight subjects were evaluated before (T1) and 12 months post (T2) bariatric/metabolic surgery (BMS). PB from subjects without obesity (nOB, n = 12) was also collected. Higher percentage of CD20+T cells was observed in OAT, compared to PB or SAT, in OB-T1. CD20 expression by PB CD4+T cells was inversely correlated with adiposity markers, while follicular-like CD20+T cells were positively correlated with impaired glucose tolerance (increased HbA1c). Notably, among OB-T1, IR establishment was marked by a lower percentage and absolute number of PB CD20+T cells, compared nOB. Obesity was associated with higher percentage of activated CD20+T cells; however, OAT-infiltrated CD20+T cells from OB-T1 with diabetes displayed the lowest activation. CD20+T cells infiltrating OAT from OB-T1 displayed a phenotype towards IFN-γ-producing Th1 and Tc1 cells. After BMS, the percentage of PB CD4+CD20+T cells increased, with reduced Th1 and increased Th17 phenotype. Whereas in OAT the percentage of CD20+T cells with Th1/17 and Tc1/17 phenotypes increased. Interestingly, OAT from OB pre/post BMS maintained higher frequency of effector memory CD20+T cells. In conclusion, CD20+T cells may play a prominent role in obesity-related AT inflammation.
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Affiliation(s)
- Aryane Cruz Oliveira Pinho
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504, Coimbra, Portugal; CIBB - Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3004-504, Coimbra, Portugal; Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, 3000-456, Coimbra, Portugal
| | - Pedro Barbosa
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504, Coimbra, Portugal; CIBB - Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3004-504, Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, 3030-789, Coimbra, Portugal
| | - André Lazaro
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra University of Coimbra, 3000-075, Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548, Coimbra, Portugal
| | - José G Tralhão
- General Surgery Unit, Centro Hospitalar e Universitário de Coimbra University of Coimbra, 3000-075, Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548, Coimbra, Portugal
| | - Maria João Pereira
- Department of Medical Sciences, Clinical Diabetology and Metabolism, Uppsala University, Uppsala, Sweden
| | - Artur Paiva
- CIBB - Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3004-504, Coimbra, Portugal; Flow Cytometry Unit, Clinical Pathology Department, Hospitais da Universidade de Coimbra, Unidade Local de Saúde de Coimbra, 3000-076, Coimbra, Portugal; Instituto Politécnico de Coimbra, ESTESC-Coimbra Health School, Ciências Biomédicas Laboratoriais, 3046-854, Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548, Coimbra, Portugal; Clinical Academic Center of Coimbra (CACC), 3000-061, Coimbra, Portugal
| | - Paula Laranjeira
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504, Coimbra, Portugal; CIBB - Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3004-504, Coimbra, Portugal; Flow Cytometry Unit, Clinical Pathology Department, Hospitais da Universidade de Coimbra, Unidade Local de Saúde de Coimbra, 3000-076, Coimbra, Portugal; Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, 3000-548, Coimbra, Portugal; Clinical Academic Center of Coimbra (CACC), 3000-061, Coimbra, Portugal.
| | - Eugenia Carvalho
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504, Coimbra, Portugal; CIBB - Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, 3004-504, Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, 3030-789, Coimbra, Portugal; APDP-Portuguese Diabetes Association, Lisbon, Portugal.
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Pinho ACO, Barbosa P, Pereira MJ, Paiva A, Carvalho E, Laranjeira P. The role of CD20 + T cells: Insights in human peripheral blood. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2024; 106:171-180. [PMID: 38695297 DOI: 10.1002/cyto.b.22178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 03/26/2024] [Accepted: 04/17/2024] [Indexed: 06/01/2024]
Abstract
CD20+ T cells constitute a small subset of T cells. These are found among CD4+, CD8+, CD4+CD8+, CD4-CD8- T, and TCRγδ+ T cells, and have been poorly characterized. The aim of this study was to characterize peripheral blood (PB) CD20+ T cells and compare them to their PB CD20- T cell counterparts. PB from 17 healthy individuals was collected. The distribution of CD20+ T cells among maturation-associated T cells compartments (naïve, central memory, transitional memory, effector memory, and effector T cells), their polarization, activation status, and expression of immune-regulatory proteins were evaluated by flow cytometry. Their function was also assessed, by measuring IFN-γ, TNF-α, and IL-17 production. Compared with CD20- T cells, CD20+ T cells represent a higher proportion of transitional memory cells. Furthermore, CD20+ T cells display a proinflammatory phenotype, characterized by the expansion of Th1, Th1/17, and Tc1 cell subsets , associated to a high expression of activation (CD25) and exhaustion (PD-1) markers. In addition, the simultaneous production of the proinflammatory cytokines IFN-γ, TNF-α, and IL-17 was also detected in CD4+CD20+ T cells. Our results show that CD20+ T cells are phenotypically and functionally different from CD20- T cells, suggesting that these cells are a distinct subset of T cells.
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Affiliation(s)
- Aryane Cruz Oliveira Pinho
- CNC-UC- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- CIBB -Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, Coimbra, Portugal
| | - Pedro Barbosa
- CNC-UC- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- CIBB -Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Maria João Pereira
- Department of Medical Sciences, Clinical Diabetology and Metabolism, Uppsala University, Uppsala, Sweden
| | - Artur Paiva
- CIBB -Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Flow Cytometry Unit, Clinical Pathology Department, Hospitais da Universidade de Coimbra, Unidade Local de Saúde de Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Onco-biology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Instituto Politécnico de Coimbra, ESTESC-Coimbra Health School, Ciências Biomédicas Laboratoriais, Coimbra, Portugal
| | - Eugenia Carvalho
- CNC-UC- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- CIBB -Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
- APDP-Portuguese Diabetes Association, Lisbon, Portugal
| | - Paula Laranjeira
- CNC-UC- Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
- CIBB -Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
- Flow Cytometry Unit, Clinical Pathology Department, Hospitais da Universidade de Coimbra, Unidade Local de Saúde de Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Onco-biology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
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Xu AM, Haro M, Walts AE, Hu Y, John J, Karlan BY, Merchant A, Orsulic S. Spatiotemporal architecture of immune cells and cancer-associated fibroblasts in high-grade serous ovarian carcinoma. SCIENCE ADVANCES 2024; 10:eadk8805. [PMID: 38630822 PMCID: PMC11023532 DOI: 10.1126/sciadv.adk8805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Accepted: 03/15/2024] [Indexed: 04/19/2024]
Abstract
High-grade serous ovarian carcinoma (HGSOC), the deadliest form of ovarian cancer, is typically diagnosed after it has metastasized and often relapses after standard-of-care platinum-based chemotherapy, likely due to advanced tumor stage, heterogeneity, and immune evasion and tumor-promoting signaling from the tumor microenvironment. To understand how spatial heterogeneity contributes to HGSOC progression and early relapse, we profiled an HGSOC tissue microarray of patient-matched longitudinal samples from 42 patients. We found spatial patterns associated with early relapse, including changes in T cell localization, malformed tertiary lymphoid structure (TLS)-like aggregates, and increased podoplanin-positive cancer-associated fibroblasts (CAFs). Using spatial features to compartmentalize the tissue, we found that plasma cells distribute in two different compartments associated with TLS-like aggregates and CAFs, and these distinct microenvironments may account for the conflicting reports about the role of plasma cells in HGSOC prognosis.
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Affiliation(s)
- Alexander M. Xu
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
- Division of Hematology and Cellular Therapy, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Marcela Haro
- Department of Obstetrics and Gynecology and Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Ann E. Walts
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Ye Hu
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Joshi John
- Department of Veterans Affairs, Greater Los Angeles Healthcare System, Los Angeles, CA 90073, USA
- Department of Medicine, Division of Geriatrics, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Beth Y. Karlan
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA 90095, USA
| | - Akil Merchant
- Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
- Division of Hematology and Cellular Therapy, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Sandra Orsulic
- Department of Obstetrics and Gynecology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA
- Department of Veterans Affairs, Greater Los Angeles Healthcare System, Los Angeles, CA 90073, USA
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, CA 90095, USA
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Ünlü S, Sánchez Navarro BG, Cakan E, Berchtold D, Meleka Hanna R, Vural S, Vural A, Meisel A, Fichtner ML. Exploring the depths of IgG4: insights into autoimmunity and novel treatments. Front Immunol 2024; 15:1346671. [PMID: 38698867 PMCID: PMC11063302 DOI: 10.3389/fimmu.2024.1346671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/29/2024] [Indexed: 05/05/2024] Open
Abstract
IgG4 subclass antibodies represent the rarest subclass of IgG antibodies, comprising only 3-5% of antibodies circulating in the bloodstream. These antibodies possess unique structural features, notably their ability to undergo a process known as fragment-antigen binding (Fab)-arm exchange, wherein they exchange half-molecules with other IgG4 antibodies. Functionally, IgG4 antibodies primarily block and exert immunomodulatory effects, particularly in the context of IgE isotype-mediated hypersensitivity reactions. In the context of disease, IgG4 antibodies are prominently observed in various autoimmune diseases combined under the term IgG4 autoimmune diseases (IgG4-AID). These diseases include myasthenia gravis (MG) with autoantibodies against muscle-specific tyrosine kinase (MuSK), nodo-paranodopathies with autoantibodies against paranodal and nodal proteins, pemphigus vulgaris and foliaceus with antibodies against desmoglein and encephalitis with antibodies against LGI1/CASPR2. Additionally, IgG4 antibodies are a prominent feature in the rare entity of IgG4 related disease (IgG4-RD). Intriguingly, both IgG4-AID and IgG4-RD demonstrate a remarkable responsiveness to anti-CD20-mediated B cell depletion therapy (BCDT), suggesting shared underlying immunopathologies. This review aims to provide a comprehensive exploration of B cells, antibody subclasses, and their general properties before examining the distinctive characteristics of IgG4 subclass antibodies in the context of health, IgG4-AID and IgG4-RD. Furthermore, we will examine potential therapeutic strategies for these conditions, with a special focus on leveraging insights gained from anti-CD20-mediated BCDT. Through this analysis, we aim to enhance our understanding of the pathogenesis of IgG4-mediated diseases and identify promising possibilities for targeted therapeutic intervention.
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Affiliation(s)
- Selen Ünlü
- Koç University Research Center for Translational Medicine (KUTTAM), İstanbul, Türkiye
- Koç University School of Medicine, Istanbul, Türkiye
| | - Blanca G. Sánchez Navarro
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Elif Cakan
- Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Cambridge, MA, United States
| | - Daniel Berchtold
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Rafael Meleka Hanna
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Secil Vural
- Koç University Research Center for Translational Medicine (KUTTAM), İstanbul, Türkiye
- Department of Dermatology and Venereology, Koç University School of Medicine, İstanbul, Türkiye
| | - Atay Vural
- Koç University Research Center for Translational Medicine (KUTTAM), İstanbul, Türkiye
- Department of Neurology, Koç University School of Medicine, İstanbul, Türkiye
| | - Andreas Meisel
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Miriam L. Fichtner
- Koç University Research Center for Translational Medicine (KUTTAM), İstanbul, Türkiye
- Department of Neurology with Experimental Neurology, Integrated Myasthenia Gravis Center, Neuroscience Clinical Research Center, Charité Universitätsmedizin Berlin, Berlin, Germany
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Rodrigues C, Laranjeira P, Pinho A, Silva I, Silva S, Coucelo M, Oliveira AC, Simões AT, Damásio I, Silva HM, Urbano M, Sarmento-Ribeiro AB, Geraldes C, Domingues MR, Almeida J, Criado I, Orfao A, Paiva A. CD20+ T cells in monoclonal B cell lymphocytosis and chronic lymphocytic leukemia: frequency, phenotype and association with disease progression. Front Oncol 2024; 14:1380648. [PMID: 38606091 PMCID: PMC11007165 DOI: 10.3389/fonc.2024.1380648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 03/18/2024] [Indexed: 04/13/2024] Open
Abstract
Introduction In monoclonal B cell lymphocytosis (MBL) and chronic lymphocytic leukemia (CLL), the expansion of malignant B cells disrupts the normal homeostasis and interactions between B cells and T cells, leading to immune dysregulation. CD20+ T cells are a subpopulation of T cells that appear to be involved in autoimmune diseases and cancer. Methods Here, we quantified and phenotypically characterized CD20+ T cells from MBL subjects and CLL patients using flow cytometry and correlated our findings with the B-cell receptor mutational status and other features of the disease. Results and discussion CD20+ T cells were more represented within the CD8+ T cell compartment and they showed a predominant memory Tc1 phenotype. CD20+ T cells were less represented in MBL and CLL patients vs healthy controls, particularly among those with unmutated IGVH gene. The expansion of malignant B cells was accompanied by phenotypic and functional changes in CD20+ T cells, including an increase in follicular helper CD4+ CD20+ T cells and CD20+ Tc1 cells, in addition to the expansion of the TCR Vβ 5.1 in CD4+ CD20+ T cells in CLL.
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Affiliation(s)
- Cristiana Rodrigues
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Paula Laranjeira
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Aryane Pinho
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal
| | - Isabel Silva
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Sandra Silva
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Margarida Coucelo
- Unidade Funcional de Hematologia Molecular, Serviço de Hematologia Clínica, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Ana Catarina Oliveira
- Unidade Funcional de Hematologia Molecular, Serviço de Hematologia Clínica, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Ana Teresa Simões
- Unidade Funcional de Hematologia Molecular, Serviço de Hematologia Clínica, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Inês Damásio
- Hematology Department, Centro Hospitalar Tondela-Viseu, Viseu, Portugal
| | | | - Mafalda Urbano
- Hematology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Ana Bela Sarmento-Ribeiro
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Hematology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- University Clinics of Hematology and Oncology and Laboratory of Oncobiology and Hematology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Catarina Geraldes
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Hematology Department, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- University Clinics of Hematology and Oncology and Laboratory of Oncobiology and Hematology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - M. Rosário Domingues
- Mass Spectrometry Centre, Associated Laboratory for Green Chemistry (LAQV-REQUIMTE), Department of Chemistry, University of Aveiro, Aveiro, Portugal
- CESAM—Centre for Environmental and Marine Studies, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Julia Almeida
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca), Salamanca, Spain
- Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - Ignacio Criado
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca), Salamanca, Spain
- Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - Alberto Orfao
- Translational and Clinical Research Program, Cancer Research Center (IBMCC, CSIC-University of Salamanca), Salamanca, Spain
- Department of Medicine, University of Salamanca (Universidad de Salamanca), Salamanca, Spain
- Institute of Biomedical Research of Salamanca (IBSAL), Salamanca, Spain
- Biomedical Research Networking Centre Consortium of Oncology (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - Artur Paiva
- Flow Cytometry Unit, Department of Clinical Pathology, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Group of Environmental Genetics of Oncobiology (CIMAGO), Faculty of Medicine (FMUC), University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Ciências Biomédicas Laboratoriais, Instituto Politécnico de Coimbra, Escola Superior de Tecnologia da Saúde de Coimbra (ESTESC)-Coimbra Health School, Coimbra, Portugal
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Zhang Y, Guo C, Zhou Y, Zhang W, Zhu Z, Wang W, Wan Y. A biphenotypic lymphocyte subset displays both T- and B-cell functionalities. Commun Biol 2024; 7:28. [PMID: 38182721 PMCID: PMC10770049 DOI: 10.1038/s42003-023-05719-9] [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: 04/10/2023] [Accepted: 12/18/2023] [Indexed: 01/07/2024] Open
Abstract
T cell/B cell mixed phenotypic lymphocytes have been observed in different disease contexts, yet their presence and function in physiological conditions remain elusive. Here, we provide evidence for the existence of a lymphocyte subset endogenously expressing both T- and B-cell lineage markers in mice. The majority of these T/B phenotypic lymphocytes (CD3+CD19+) show an origin of pro/pre B cells and distribute widely in mouse bone marrow, lymph nodes, spleen, and peripheral blood. Functional assays show that these biphenotypic lymphocytes can be activated through stimulating TCR or BCR signaling pathways. Moreover, we show that these cells actively participate both the humoral and cellular immune responses elicited by vaccination. Compared to conventional T cells, these biphenotypic lymphocytes can secrete a higher level of IL-2 but a lower level of TNF-α upon antigen specific stimulation. An equivalent lymphocyte subset is found in freshly isolated human PBMCs and exhibits similar functionality, albeit at a lower frequency than in mice.
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Affiliation(s)
- Yifan Zhang
- Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Key Laboratory of Laboratory Medicine of Henan Province, Zhengzhou, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Laboratory Medicine, Shanghai Public Health Clinical Center, Shanghai, China
| | - Cuiyuan Guo
- Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Key Laboratory of Laboratory Medicine of Henan Province, Zhengzhou, China
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Laboratory Medicine, Shanghai Public Health Clinical Center, Shanghai, China
| | - Yigong Zhou
- Life Science Department, Faculty of Agricultural and Environmental Sciences, Macdonald Campus of McGill University, Quebec, Canada
| | - Wenhong Zhang
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhaoqin Zhu
- Department of Laboratory Medicine, Shanghai Public Health Clinical Center, Shanghai, China.
| | - Wanhai Wang
- Clinical Laboratory, The First Affiliated Hospital of Zhengzhou University, Key Laboratory of Laboratory Medicine of Henan Province, Zhengzhou, China.
| | - Yanmin Wan
- Department of Infectious Diseases, Shanghai Key Laboratory of Infectious Diseases and Biosafety Emergency Response, National Medical Center for Infectious Diseases, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China.
- Shanghai Huashen Institute of Microbes and Infections, Shanghai, China.
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7
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KUROKAWA A, YAMAMOTO Y. Immunohistochemical identification of T and B lymphocytes in formalin-fixed, paraffin-embedded tissues of 53 avian species using commercial antibodies. J Vet Med Sci 2023; 85:1121-1130. [PMID: 37661384 PMCID: PMC10600538 DOI: 10.1292/jvms.23-0255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023] Open
Abstract
Providing a method to detect avian lymphocytes by immunohistochemistry (IHC) would be helpful for analyzing immune function and diagnosing diseases in birds. In this study, we comprehensively examined the immunohistochemical identification of avian T and B lymphocytes in formalin-fixed, paraffin-embedded tissues from 53 avian species across 15 orders, using eight commercially available lymphocyte markers. T lymphocytes from all 53 avian species tested were specifically detected by IHC using the anti-CD3 antibody (clone F7.2.38). The appropriate antibody for detecting avian B lymphocytes in IHC varied depending on the avian species. B lymphocytes were specifically labeled by IHC in 46 of 53 avian species (86.8%) using any of seven B cell markers. The anti-PAX5 antibody (clone SP34) immunohistochemically detected B lymphocytes from the majority of avian species (41 out of 53 species), excluding those in the orders Falconiformes (falcons) and Passeriformes (oscines). The anti-BAFF-R antibody (clone 2C4) proved suitable for detecting B lymphocytes in the orders Galliformes (landfowls) and Anseriformes (waterfowls) in IHC. Caution is advised when using the anti-BLA36 (clone A27-42) and two anti-CD20 (clone L26 and product No. PA5-16701) antibodies, which are commonly used as B cell markers in mammals, for detecting avian B lymphocytes. These antibodies reacted with cells located in both T and B cell areas in certain avian species. The anti-Bu-1a/b (clone AV20) and anti-CD79a (clone HM57) antibodies were found not to bind to B lymphocytes in various avian species in IHC.
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Affiliation(s)
- Aoi KUROKAWA
- National Institute of Animal Health, National Agriculture
and Food Research Organization, Ibaraki, Japan
| | - Yu YAMAMOTO
- National Institute of Animal Health, National Agriculture
and Food Research Organization, Ibaraki, Japan
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8
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Geng Z, Pan X, Xu J, Jia X. Friend and foe: the regulation network of ascites components in ovarian cancer progression. J Cell Commun Signal 2023; 17:391-407. [PMID: 36227507 PMCID: PMC10409702 DOI: 10.1007/s12079-022-00698-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 09/11/2022] [Indexed: 10/17/2022] Open
Abstract
The tumor microenvironment (TME) and its complex role in cancer progression have been hotspots of cancer research in recent years. Ascites, which occurs frequently in patients with ovarian cancer especially in advanced stages, represents a unique TME. Malignant ascites contains abundant cellular and acellular components that play important roles in tumorigenesis, growth, metastasis, and chemoresistance of ovarian cancer through complex molecular mechanisms and signaling pathways. As a valuable liquid biopsy sample, ascites fluid is also of great significance for the prognostic analysis of ovarian cancer. The components of ovarian cancer ascites are generally considered to comprise tumor-promoting factors; however, in recent years studies have found that ascites also contains tumor-suppressing factors, raising new perspectives on interactions between ascites and tumors. Malignant ascites directly constitutes the ovarian cancer microenvironment, therefore, the study of its components will aid in the development of new therapeutic strategies. This article reviews the current research on tumor-promoting and tumor-suppressing factors and molecular mechanisms of their actions in ovarian cancer-derived ascites and therapeutic strategies targeting ascites, which may provide references for the development of novel therapeutic targets for ovarian cancer in the future.
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Affiliation(s)
- Zhe Geng
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, 123 Mochou Rd, Nanjing, 210004, China
| | - Xinxing Pan
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, 123 Mochou Rd, Nanjing, 210004, China
| | - Juan Xu
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, 123 Mochou Rd, Nanjing, 210004, China.
| | - Xuemei Jia
- Department of Gynecology, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, 123 Mochou Rd, Nanjing, 210004, China.
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9
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Shinoda K, Li R, Rezk A, Mexhitaj I, Patterson KR, Kakara M, Zuroff L, Bennett JL, von Büdingen HC, Carruthers R, Edwards KR, Fallis R, Giacomini PS, Greenberg BM, Hafler DA, Ionete C, Kaunzner UW, Lock CB, Longbrake EE, Pardo G, Piehl F, Weber MS, Ziemssen T, Jacobs D, Gelfand JM, Cross AH, Cameron B, Musch B, Winger RC, Jia X, Harp CT, Herman A, Bar-Or A. Differential effects of anti-CD20 therapy on CD4 and CD8 T cells and implication of CD20-expressing CD8 T cells in MS disease activity. Proc Natl Acad Sci U S A 2023; 120:e2207291120. [PMID: 36634138 PMCID: PMC9934304 DOI: 10.1073/pnas.2207291120] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
A small proportion of multiple sclerosis (MS) patients develop new disease activity soon after starting anti-CD20 therapy. This activity does not recur with further dosing, possibly reflecting deeper depletion of CD20-expressing cells with repeat infusions. We assessed cellular immune profiles and their association with transient disease activity following anti-CD20 initiation as a window into relapsing disease biology. Peripheral blood mononuclear cells from independent discovery and validation cohorts of MS patients initiating ocrelizumab were assessed for phenotypic and functional profiles using multiparametric flow cytometry. Pretreatment CD20-expressing T cells, especially CD20dimCD8+ T cells with a highly inflammatory and central nervous system (CNS)-homing phenotype, were significantly inversely correlated with pretreatment MRI gadolinium-lesion counts, and also predictive of early disease activity observed after anti-CD20 initiation. Direct removal of pretreatment proinflammatory CD20dimCD8+ T cells had a greater contribution to treatment-associated changes in the CD8+ T cell pool than was the case for CD4+ T cells. Early disease activity following anti-CD20 initiation was not associated with reconstituting CD20dimCD8+ T cells, which were less proinflammatory compared with pretreatment. Similarly, this disease activity did not correlate with early reconstituting B cells, which were predominantly transitional CD19+CD24highCD38high with a more anti-inflammatory profile. We provide insights into the mode-of-action of anti-CD20 and highlight a potential role for CD20dimCD8+ T cells in MS relapse biology; their strong inverse correlation with both pretreatment and early posttreatment disease activity suggests that CD20-expressing CD8+ T cells leaving the circulation (possibly to the CNS) play a particularly early role in the immune cascades involved in relapse development.
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Affiliation(s)
- Koji Shinoda
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Rui Li
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Ayman Rezk
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Ina Mexhitaj
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Kristina R. Patterson
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Mihir Kakara
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Leah Zuroff
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Jeffrey L. Bennett
- cDepartments of Neurology and Ophthalmology, Programs in Neuroscience and Immunology, University of Colorado School of Medicine, Aurora, CO80045
| | | | - Robert Carruthers
- eDepartment of Medicine, University of British Columbia, Vancouver, BCV6T 2B5, Canada
| | - Keith R. Edwards
- fMultiple Sclerosis Center of Northeastern New York, Comprehensive MS Care Center Affiliated with the National MS Society, Latham, NY12110
| | - Robert Fallis
- gDepartment of Neurology, Ohio State University Medical Center, Columbus, OH43210
| | - Paul S. Giacomini
- hDepartment of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QCH3A 2B4, Canada
| | - Benjamin M. Greenberg
- iDepartment of Neurology, University of Texas Southwestern Medical Center, Dallas, TX75390
| | - David A. Hafler
- jDepartments of Neurology and Immunobiology, Yale School of Medicine, New Haven, CT06510
| | - Carolina Ionete
- kDepartment of Neurology, University of Massachusetts Medical School, Worcester, MA01655
| | - Ulrike W. Kaunzner
- lJudith Jaffe Multiple Sclerosis Center, Weill Cornell Medicine, New York, NY10021
| | - Christopher B. Lock
- mDepartment of Neurology and Neurological Sciences, Stanford University, Palo Alto, CA94304
| | | | - Gabriel Pardo
- oOklahoma Medical Research Foundation, Multiple Sclerosis Center of Excellence, Oklahoma City, OK73104
| | - Fredrik Piehl
- pDepartment of Clinical Neuroscience, Karolinska Institute, SE-171 76Stockholm, Sweden
- qDepartment of Neurology, Karolinska University Hospital, SE-171 77Stockholm, Sweden
- rNeuroimmunology Unit, Center for Molecular Medicine, Karolinska University Hospital, Karolinska Institute, SE-171 77Stockholm, Sweden
| | - Martin S. Weber
- sInstitute of Neuropathology, University Medical Center, 37075Göttingen, Germany
- tDepartment of Neurology, University Medical Center, 37075Göttingen, Germany
- uFraunhofer-Institute for Translational Medicine and Pharmackology ITMP, 37075Göttingen, Germany
| | - Tjalf Ziemssen
- vDepartment of Neurology, Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Technical University of Dresden, 01307Dresden, Germany
| | - Dina Jacobs
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
| | - Jeffrey M. Gelfand
- wWeill Institute for Neurosciences, University of California, San Francisco, CA94158
- xDepartment of Neurology, University of California, San Francisco, CA94158
| | - Anne H. Cross
- yDepartment of Neurology, Washington University School of Medicine, Saint Louis, MO63110
| | | | - Bruno Musch
- zGenentech, Inc., South San Francisco, CA94080
| | | | | | | | - Ann Herman
- zGenentech, Inc., South San Francisco, CA94080
| | - Amit Bar-Or
- aDepartment of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- bCenter for Neuroinflammation and Experimental Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA19104
- aaChildren's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA19104
- 1To whom correspondence may be addressed.
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10
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Lee AYS. CD20 + T cells: an emerging T cell subset in human pathology. Inflamm Res 2022; 71:1181-1189. [PMID: 35951029 PMCID: PMC9616751 DOI: 10.1007/s00011-022-01622-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 07/23/2022] [Accepted: 07/27/2022] [Indexed: 11/13/2022] Open
Abstract
Introduction Although CD20 is classically a B cell marker, in the last three decades, dim expression has been noted on a subset of T cells as well that has been independently verified by a number of groups. Our understanding of these cells and their function is not well established. Methods A thorough review of original articles on CD20+T cells was undertaken of Pubmed by using combination of phrases including “CD20+”, “CD20-positive” and “T cells”. Articles in English were considered, and there was no time restriction. Results CD20+T cells express the standard T cell markers and, in comparison to CD20¯ T cells, appear to express greater inflammatory cytokines and markers of effector function. Although the ontogeny of these cells is still being established, the current theory is that CD20 may be acquired by trogocytosis from B cells. CD20+T cells may be found in healthy controls and in a wide range of pathologies including autoimmune diseases, haematological and non-haematological malignancies and human immunodeficiency virus (HIV) infections. One of the best studied diseases where these cells are found is multiple sclerosis (MS) where a number of therapeutic interventions, including anti-CD20 depletion, have been shown to effectively deplete these cells. Conclusion This review summarises the latest understanding of CD20+T cells, their presence in various diseases, their putative function and how they may be an ongoing target of CD20-depleting agents. Unfortunately, our understanding of these cells is still at its infancy and ongoing study in a wider range of pathologies is required.
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Affiliation(s)
- Adrian Y S Lee
- Department of Clinical Immunology, Westmead Hospital, Hawkesbury Road, Westmead, NSW, 2145, Australia. .,Department of Immunopathology, ICPMR and NSW Health Pathology, Westmead Hospital, Westmead, NSW, Australia. .,Department of Medicine, Westmead Clinical School, The University of Sydney, Westmead, NSW, Australia.
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11
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CD20 positive CD8 T cells are a unique and transcriptionally-distinct subset of T cells with distinct transmigration properties. Sci Rep 2021; 11:20499. [PMID: 34654826 PMCID: PMC8520003 DOI: 10.1038/s41598-021-00007-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 10/05/2021] [Indexed: 11/09/2022] Open
Abstract
The presence of T cells that are dimly positive for the B cell marker CD20 is well-established in autoimmunity and correlates with disease severity in various diseases. Further, we previously identified that the level of CD20-positive T cells was three-fourfold elevated in ascites fluid of ovarian carcinoma patients, together suggesting a role in both autoimmunity and cancer. In this respect, treatment of autoimmune patients with the CD20-targeting antibody Rituximab has also been shown to target and deplete CD20-positive T cells, previously identified as IFN-gamma producing, low proliferative, CD8 cytotoxic T cells with an effector memory (EM) differentiation state. However, the exact phenotype and relevance of CD20-positive T cells remains unclear. Here, we set out to identify the transcriptomic profile of CD20-positive T cells using RNA sequencing. Further, to gain insight into potential functional properties of CD20 expression in T cells, CD20 was ectopically expressed on healthy human T cells and phenotypic, functional, migratory and adhesive properties were determined in vitro and in vivo. Together, these assays revealed a reduced transmigration and an enhanced adhesive profile combined with an enhanced activation status for CD20-positive T cells.
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12
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Huot N, Rascle P, Planchais C, Contreras V, Passaes C, Le Grand R, Beignon AS, Kornobis E, Legendre R, Varet H, Saez-Cirion A, Mouquet H, Jacquelin B, Müller-Trutwin M. CD32 +CD4 + T Cells Sharing B Cell Properties Increase With Simian Immunodeficiency Virus Replication in Lymphoid Tissues. Front Immunol 2021; 12:695148. [PMID: 34220857 PMCID: PMC8242952 DOI: 10.3389/fimmu.2021.695148] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/25/2021] [Indexed: 11/16/2022] Open
Abstract
CD4 T cell responses constitute an important component of adaptive immunity and are critical regulators of anti-microbial protection. CD4+ T cells expressing CD32a have been identified as a target for HIV. CD32a is an Fcγ receptor known to be expressed on myeloid cells, granulocytes, B cells and NK cells. Little is known about the biology of CD32+CD4+ T cells. Our goal was to understand the dynamics of CD32+CD4+ T cells in tissues. We analyzed these cells in the blood, lymph nodes, spleen, ileum, jejunum and liver of two nonhuman primate models frequently used in biomedical research: African green monkeys (AGM) and macaques. We studied them in healthy animals and during viral (SIV) infection. We performed phenotypic and transcriptomic analysis at different stages of infection. In addition, we compared CD32+CD4+ T cells in tissues with well-controlled (spleen) and not efficiently controlled (jejunum) SIV replication in AGM. The CD32+CD4+ T cells more frequently expressed markers associated with T cell activation and HIV infection (CCR5, PD-1, CXCR5, CXCR3) and had higher levels of actively transcribed SIV RNA than CD32-CD4+T cells. Furthermore, CD32+CD4+ T cells from lymphoid tissues strongly expressed B-cell-related transcriptomic signatures, and displayed B cell markers at the cell surface, including immunoglobulins CD32+CD4+ T cells were rare in healthy animals and blood but increased strongly in tissues with ongoing viral replication. CD32+CD4+ T cell levels in tissues correlated with viremia. Our results suggest that the tissue environment induced by SIV replication drives the accumulation of these unusual cells with enhanced susceptibility to viral infection.
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Affiliation(s)
- Nicolas Huot
- Institut Pasteur, Unité HIV, Inflammation et Persistance, Paris, France
| | - Philippe Rascle
- Institut Pasteur, Unité HIV, Inflammation et Persistance, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Cyril Planchais
- Institut Pasteur, INSERM U1222, Laboratoire d'Immunologie Humorale, Paris, France
| | - Vanessa Contreras
- CEA-Université Paris Sud-Inserm, U1184, IDMIT Department, IBFJ, Fontenay-aux-Roses, France
| | - Caroline Passaes
- Institut Pasteur, Unité HIV, Inflammation et Persistance, Paris, France
| | - Roger Le Grand
- CEA-Université Paris Sud-Inserm, U1184, IDMIT Department, IBFJ, Fontenay-aux-Roses, France
| | - Anne-Sophie Beignon
- CEA-Université Paris Sud-Inserm, U1184, IDMIT Department, IBFJ, Fontenay-aux-Roses, France
| | - Etienne Kornobis
- Hub de Bioinformatique et Biostatistique - Département Biologie Computationnelle, Institut Pasteur, Paris, France.,Plate-forme Technologique Biomics - Centre de Ressources et Recherches Technologiques (C2RT), Institut Pasteur, Paris, France
| | - Rachel Legendre
- Hub de Bioinformatique et Biostatistique - Département Biologie Computationnelle, Institut Pasteur, Paris, France.,Plate-forme Technologique Biomics - Centre de Ressources et Recherches Technologiques (C2RT), Institut Pasteur, Paris, France
| | - Hugo Varet
- Hub de Bioinformatique et Biostatistique - Département Biologie Computationnelle, Institut Pasteur, Paris, France.,Plate-forme Technologique Biomics - Centre de Ressources et Recherches Technologiques (C2RT), Institut Pasteur, Paris, France
| | - Asier Saez-Cirion
- Institut Pasteur, Unité HIV, Inflammation et Persistance, Paris, France
| | - Hugo Mouquet
- Institut Pasteur, INSERM U1222, Laboratoire d'Immunologie Humorale, Paris, France
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13
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Increased proportion of CD20+ T cells after rituximab treatment in patient with neuromyelitis optica later diagnosed with lung B-cell lymphoma: A case report. J Neuroimmunol 2021; 355:577564. [PMID: 33862419 DOI: 10.1016/j.jneuroim.2021.577564] [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: 12/22/2020] [Revised: 03/29/2021] [Accepted: 03/29/2021] [Indexed: 11/20/2022]
Abstract
INTRODUCTION Neuromyelitis optica (NMO) is a rare inflammatory autoimmune disorder of the CNS. Rituximab is used to treat antibody-mediated autoimmune diseases. CASE PRESENTATION We report the case a patient with NMO, who was treated with rituximab and presented CD20+ T cells by flow cytometry after treatment, later diagnosed with lung B-cell lymphoma. CONCLUSION This is the first report of CD20+ T cell detection in an NMO patient. We found that CD20+ T cells recovered faster than B cells after rituximab treatment and that CD20+ T cells seemed to play a role in suppressing tumor growth and memory T cell activity.
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14
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Moser T, Akgün K, Proschmann U, Sellner J, Ziemssen T. The role of TH17 cells in multiple sclerosis: Therapeutic implications. Autoimmun Rev 2020; 19:102647. [PMID: 32801039 DOI: 10.1016/j.autrev.2020.102647] [Citation(s) in RCA: 144] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 03/08/2020] [Indexed: 12/13/2022]
Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system (CNS) where immunopathology is thought to be mediated by myelin-reactive CD4+ T helper (TH) cells. The TH cells most commonly implicated in the pathogenesis of the disease are of TH1 and TH17 lineage, which are defined by the production of interferon-γ and interleukin-17, respectively. Moreover, there is emerging evidence for the involvement of TH17.1 cells, which share the hallmarks of TH1 and TH17 subsets. In this review, we summarise current knowledge about the potential role of TH17 subsets in the initiation and progression of the disease and put a focus on their response to approved immunomodulatory MS drugs. In this regard, TH17 cells are abundant in peripheral blood, cerebrospinal fluid and brain lesions of MS patients, and their counts and inflammatory mediators are further increased during relapses. Fingolimod and alemtuzumab induce a paramount decrease in central memory T cells, which harbour the majority of peripheral TH17 cells, while the efficacy of natalizumab, dimethyl fumarate and importantly hematopoietic stem cell therapy correlates with TH17.1 cell inhibition. Interestingly, also CD20 antibodies target highly inflammatory TH cells and hamper TH17 differentiation by IL-6 reductions. Moreover, recovery rates of TH cells best correlate with long-term efficacy after therapeutical immunodepletion. We conclude that central memory TH17.1 cells play a pivotal role in MS pathogenesis and they represent a major target of MS therapeutics.
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Affiliation(s)
- Tobias Moser
- Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technical, Fetscherstrasse 74, 01307 Dresden, Germany; Department of Neurology, Christian Doppler Medical Center, Paracelsus Medical University, Ignaz-Harrer-Straße 79, 5020 Salzburg, Austria
| | - Katja Akgün
- Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technical, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Undine Proschmann
- Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technical, Fetscherstrasse 74, 01307 Dresden, Germany
| | - Johann Sellner
- Department of Neurology, Christian Doppler Medical Center, Paracelsus Medical University, Ignaz-Harrer-Straße 79, 5020 Salzburg, Austria; Department of Neurology, Landesklinikum Mistelbach-Gänserndorf, Liechtensteinstrasse 67, 3120 Mistelbach, Austria; Department of Neurology, Klinikum rechts der Isar, Technische Universität München, Ismaninger Strasse 22, 81675 München, Germany
| | - Tjalf Ziemssen
- Center of Clinical Neuroscience, University Hospital Carl Gustav Carus, Dresden University of Technical, Fetscherstrasse 74, 01307 Dresden, Germany.
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15
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Anti-CD20 therapy depletes activated myelin-specific CD8 + T cells in multiple sclerosis. Proc Natl Acad Sci U S A 2019; 116:25800-25807. [PMID: 31748274 PMCID: PMC6926057 DOI: 10.1073/pnas.1915309116] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Multiple sclerosis (MS) is an inflammatory demyelinating disease of the central nervous system. CD8+ T cells have been strongly implicated in MS pathogenesis, but it is unclear whether myelin is a CD8+ T cell autoantigenic target in MS. This study demonstrated that while myelin-specific CD8+ T cells are present at similar frequencies in untreated MS patients and healthy subjects, the proportion of memory and CD20-expressing myelin-specific CD8+ T cells was increased in MS patients, suggesting prior antigen encounter. This activated phenotype was reversible as the memory and CD20-expressing populations of certain myelin-specific CD8+ T cells were reduced following anti-CD20 treatment. CD8+ T cells are believed to play an important role in multiple sclerosis (MS), yet their role in MS pathogenesis remains poorly defined. Although myelin proteins are considered potential autoantigenic targets, prior studies of myelin-reactive CD8+ T cells in MS have relied on in vitro stimulation, thereby limiting accurate measurement of their ex vivo precursor frequencies and phenotypes. Peptide:MHC I tetramers were used to identify and validate 5 myelin CD8+ T cell epitopes, including 2 newly described determinants in humans. The validated tetramers were used to measure the ex vivo precursor frequencies and phenotypes of myelin-specific CD8+ T cells in the peripheral blood of untreated MS patients and HLA allele-matched healthy controls. In parallel, CD8+ T cell responses against immunodominant influenza epitopes were also measured. There were no differences in ex vivo frequencies of tetramer-positive myelin-specific CD8+ T cells between MS patients and control subjects. An increased proportion of myelin-specific CD8+ T cells in MS patients exhibited a memory phenotype and expressed CD20 compared to control subjects, while there were no phenotypic differences observed among influenza-specific CD8+ T cells. Longitudinal assessments were also measured in a subset of MS patients subsequently treated with anti-CD20 monoclonal antibody therapy. The proportion of memory and CD20+ CD8+ T cells specific for certain myelin but not influenza epitopes was significantly reduced following anti-CD20 treatment. This study, representing a characterization of unmanipulated myelin-reactive CD8+ T cells in MS, indicates these cells may be attractive targets in MS therapy.
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16
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Serra-Peinado C, Grau-Expósito J, Luque-Ballesteros L, Astorga-Gamaza A, Navarro J, Gallego-Rodriguez J, Martin M, Curran A, Burgos J, Ribera E, Raventós B, Willekens R, Torrella A, Planas B, Badía R, Garcia F, Castellví J, Genescà M, Falcó V, Buzon MJ. Expression of CD20 after viral reactivation renders HIV-reservoir cells susceptible to Rituximab. Nat Commun 2019; 10:3705. [PMID: 31420544 PMCID: PMC6697690 DOI: 10.1038/s41467-019-11556-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 07/19/2019] [Indexed: 01/06/2023] Open
Abstract
The identification of exclusive markers to target HIV-reservoir cells will represent a significant advance in the search for therapies to cure HIV. Here, we identify the B lymphocyte antigen CD20 as a marker for HIV-infected cells in vitro and in vivo. The CD20 molecule is dimly expressed in a subpopulation of CD4-positive (CD4+) T lymphocytes from blood, with high levels of cell activation and heterogeneous memory phenotypes. In lymph node samples from infected patients, CD20 is present in productively HIV-infected cells, and ex vivo viral infection selectively upregulates the expression of CD20 during early infection. In samples from patients on antiretroviral therapy (ART) this subpopulation is significantly enriched in HIV transcripts, and the anti-CD20 monoclonal antibody Rituximab induces cell killing, which reduces the pool of HIV-expressing cells when combined with latency reversal agents. We provide a tool for targeting this active HIV-reservoir after viral reactivation in patients while on ART. Here, the authors identify B lymphocyte antigen CD20 as a marker for HIV-infected T cells and provide evidence for the potential use of anti-CD20 antibodies in combination with latency reversing agents for depletion of viral reactivated CD4 T cells in patients on antiretroviral therapy.
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Affiliation(s)
- Carla Serra-Peinado
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Judith Grau-Expósito
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Laura Luque-Ballesteros
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Antonio Astorga-Gamaza
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Jordi Navarro
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Jenny Gallego-Rodriguez
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Mario Martin
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Adrià Curran
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Joaquin Burgos
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Esteban Ribera
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Berta Raventós
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Rein Willekens
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ariadna Torrella
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Bibiana Planas
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Rosa Badía
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Felipe Garcia
- Infectious Disease Department, Hospital Clínic de Barcelona, Universitat de Barcelona, Barcelona, Spain
| | - Josep Castellví
- Department of Pathology, Hospital Vall d'Hebrón, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Meritxell Genescà
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Vicenç Falcó
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Maria J Buzon
- Infectious Disease Department, Hospital Universitari Vall d'Hebrón, Institut de Recerca (VHIR), Universitat Autònoma de Barcelona, Barcelona, Spain.
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17
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Gadgeel M, Al-Qanber B, Buck S, Savaşan S. CD20+ T Cells in Primary Mediastinal Large B Cell Lymphoma Microenvironment. CYTOMETRY PART B-CLINICAL CYTOMETRY 2019; 98:16-18. [PMID: 31218821 DOI: 10.1002/cyto.b.21832] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/28/2019] [Accepted: 06/04/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Manisha Gadgeel
- Hematology/Oncology Flow Cytometry Laboratory, Division of Hematology/Oncology, Children's Hospital of Michigan, and Carman and Ann Adams Department of Pediatrics, Wayne State University, Detroit, Michigan
| | - Batool Al-Qanber
- Hematology/Oncology Flow Cytometry Laboratory, Division of Hematology/Oncology, Children's Hospital of Michigan, and Carman and Ann Adams Department of Pediatrics, Wayne State University, Detroit, Michigan
| | - Steven Buck
- Hematology/Oncology Flow Cytometry Laboratory, Division of Hematology/Oncology, Children's Hospital of Michigan, and Carman and Ann Adams Department of Pediatrics, Wayne State University, Detroit, Michigan
| | - Süreyya Savaşan
- Hematology/Oncology Flow Cytometry Laboratory, Division of Hematology/Oncology, Children's Hospital of Michigan, and Carman and Ann Adams Department of Pediatrics, Wayne State University, Detroit, Michigan.,Pediatric Bone Marrow Transplant Program, Division of Hematology/Oncology, Children's Hospital of Michigan, and Barbara Ann Karmanos Cancer Center, Carman and Ann Adams Department of Pediatrics, Wayne State University, Detroit, Michigan
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18
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Chen Q, Yuan S, Sun H, Peng L. CD3 +CD20 + T cells and their roles in human diseases. Hum Immunol 2019; 80:191-194. [PMID: 30639700 DOI: 10.1016/j.humimm.2019.01.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Revised: 12/30/2018] [Accepted: 01/10/2019] [Indexed: 02/07/2023]
Abstract
CD3+CD20+ T cells are a population of CD3+ T cells co-expressing CD20 that make up to ∼3-5% of the CD3+ T-cell compartment in the peripheral blood of human beings. In healthy individuals, CD3+CD20+ T cells are heterogeneous for containing a lower proportion of CD4+ cells, but produce higher levels of IL-17A and/or IFN-γ than those of CD3+CD20- T cells. Recently, emerging studies have shown a pathogenic behavior of CD3+CD20+ T cells in autoimmune diseases and CD20+ T-cell malignancies, and patients with the diseases may benefit from anti-CD20 immunotherapy to deplete these cells. However, CD3+CD20+ T cells may also play a protective role in ovarian cancer and HIV infection for their strong propensity to IFN-γ production. In this review, we will describe the current knowledge about CD3+CD20+ T-cell biology, and discuss their functional roles in autoimmune diseases as well as cancer and infectious diseases.
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Affiliation(s)
- Qin Chen
- Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - Shunling Yuan
- East China Military Material Purchasing Bureau, Shanghai 200433, China
| | - Hongwu Sun
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
| | - Liusheng Peng
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China.
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19
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Niu J, Zhai Z, Hao F, Zhang Y, Song Z, Zhong H. Dissection of a circulating CD3 + CD20 + T cell subpopulation in patients with psoriasis. Clin Exp Immunol 2018; 192:206-212. [PMID: 29377068 DOI: 10.1111/cei.13106] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/17/2018] [Indexed: 12/26/2022] Open
Abstract
CD3+ CD20+ T cells are a population of CD3+ T cells that express CD20 and identified in healthy donors and autoimmune diseases. However, the nature and role of these cells in patients with psoriasis remain unclear. In this study, we aimed to investigate the level, phenotype, functional and clinical relevance of CD3+ CD20+ T cells in the peripheral blood of patients with psoriasis. We found that a small subset of CD3+ T cells expressed CD20 molecule in the peripheral blood of patients with psoriasis, and their levels were similar to those in healthy donors. Circulating CD3+ CD20+ T cells in patients with psoriasis were enriched in CD4+ cells and displayed an activated effector phenotype, as these cells contained fewer CD45RA+ -naive and CCR7+ cells with increased activity than those of CD3+ T cells lacking CD20. In addition, compared with healthy donors, circulating CD3+ CD20+ T cells in patients with psoriasis produced more cytokines, interleukin (IL)-17A, tumour necrosis factor (TNF)-α and IL-21, but not IL-4 and IFN-γ. Furthermore, a significantly positive correlation was found between the levels of IL-17A, TNF-α and IL-21-production CD3+ CD20+ T cells with Psoriasis Area and Severity Index scores. Our findings suggest that CD3+ CD20+ T cells may play a role in the pathogenesis of psoriasis.
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Affiliation(s)
- J Niu
- Department of Dermatology, General Hospital of Shenyang Military, Shenyang, Liaoning, China.,Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Z Zhai
- Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - F Hao
- Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Y Zhang
- Department of Dermatology, General Hospital of Shenyang Military, Shenyang, Liaoning, China
| | - Z Song
- Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - H Zhong
- Department of Dermatology, Southwest Hospital, Third Military Medical University, Chongqing, China.,Department of Zhonghua Clinic in Liangjiang New Area, Chongqing, China
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20
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Schuh E, Berer K, Mulazzani M, Feil K, Meinl I, Lahm H, Krane M, Lange R, Pfannes K, Subklewe M, Gürkov R, Bradl M, Hohlfeld R, Kümpfel T, Meinl E, Krumbholz M. Features of Human CD3+CD20+ T Cells. THE JOURNAL OF IMMUNOLOGY 2016; 197:1111-7. [DOI: 10.4049/jimmunol.1600089] [Citation(s) in RCA: 102] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 06/02/2016] [Indexed: 12/17/2022]
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21
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Hodara VL, Parodi LM, Keckler MS, Giavedoni LD. Increases in NKG2C Expression on T Cells and Higher Levels of Circulating CD8 + B Cells Are Associated with Sterilizing Immunity Provided by a Live Attenuated SIV Vaccine. AIDS Res Hum Retroviruses 2016; 32:1125-1134. [PMID: 26986800 DOI: 10.1089/aid.2015.0300] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Vaccines based on live attenuated viruses are highly effective immunogens in the simian immunodeficiency virus (SIV)/rhesus macaque animal model and offer the possibility of studying correlates of protection against infection with virulent virus. We utilized a tether system for studying, in naive macaques and animals vaccinated with a live-attenuated vaccine, the acute events after challenge with pathogenic SIV. This approach allowed for the frequent sampling of small blood volumes without sedation or restraining of the animals, thus reducing the confounding effect of sampling stress. Before challenge, vaccinated animals presented significantly higher levels of proliferating and activated B cells than naive macaques, which were manifested by high expression of CD8 on B cells. After SIV challenge, the only changes observed in protected vaccinated macaques were significant increases in expression of the NK marker NKG2C on CD4 and CD8 T cells. We also identified that infection of naive macaques with SIV resulted in a transient peak of expression of CD20 on CD8 T cells and a constant rise in the number of B cells expressing CD8. Finally, analysis of a larger cohort of vaccinated animals identified that, even when circulating levels of vaccine virus are below the limit of detection, live attenuated vaccines induce systemic increases of IP-10 and perforin. These studies indicate that components of both the innate and adaptive immune systems of animals inoculated with a live-attenuated SIV vaccine respond to and control infection with virulent virus. Persistence of the vaccine virus in tissues may explain the elevated cytokine and B-cell activation levels. In addition, our report underpins the utility of the tether system for the intensive study of acute immune responses to viral infections.
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Affiliation(s)
- Vida L. Hodara
- Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, Texas
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, Texas
| | - Laura M. Parodi
- Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, Texas
| | - M. Shannon Keckler
- Division of Healthcare Quality Promotion, Centers for Diseases Control and Prevention, Atlanta, Georgia
| | - Luis D. Giavedoni
- Department of Virology and Immunology, Texas Biomedical Research Institute, San Antonio, Texas
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, Texas
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