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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] [MESH Headings] [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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Costaguta GA, Álvarez F. B cell depletion for autoimmune liver diseases: A retrospective review of indications and outcomes. JPGN REPORTS 2024; 5:326-333. [PMID: 39149184 PMCID: PMC11322033 DOI: 10.1002/jpr3.12098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 04/08/2024] [Accepted: 05/19/2024] [Indexed: 08/17/2024]
Abstract
Objectives Pediatric autoimmune hepatitis has an incidence of 0.23/100.000 children in North America, with a bleak prognosis if left untreated. Steroids are the therapy of choice but are not always effective. B cell depletion is a safe and effective therapy that allows for a steroid-sparing protocol, especially in patients who do not tolerate side effects. Methods We retrospectively reviewed rituximab-treated patients between 2017 and 2022. Demographics, previous treatments, reasons for B cell depletion, response, and adverse effects were noted. Results Six patients with a mean age of 10.2 years were included. All patients had comorbidities that rendered treatment with steroids unsuccessful or undesirable. Rituximab was started at a mean follow-up of 8 months. After 6 months, the mean alanine transaminase and aspartate transaminase levels decreased from 575 IU/L and 342 IU/L, respectively, to 28 IU/L (p = 0.02) and 36 IU/L (p = 0.008), respectively. Mean γ-glutamyl transpeptidase decreased from 105 to 25 IU/L (p = 0.01). Immunoglobulin G levels were normalized in all patients (p = 0.01). No severe adverse events were observed. One patient had persistent hypogammaglobulinemia, and another had lymphopenia. Conclusion B-cell depletion is an effective and safe treatment for autoimmune liver diseases and should be included as an option, particularly for relapsing patients in whom steroids are undesirable or have shown nonadherence.
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Affiliation(s)
| | - Fernando Álvarez
- Gastroenterology, Hepatology and NutritionCHU Sainte‐JustineMontrealQuebecCanada
- Department of PediatricsUniversity of MontrealMontrealQuebecCanada
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3
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Golabi M, Kazemi D, Chadeganipour AS, Fouladseresht H, Sullman MJM, Ghezelbash B, Dastgerdi AY, Eskandari N. The Role of Cobalamin in Multiple Sclerosis: An Update. Inflammation 2024:10.1007/s10753-024-02075-6. [PMID: 38902541 DOI: 10.1007/s10753-024-02075-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/22/2024]
Abstract
Multiple sclerosis (MS) is a neurodegenerative condition that results in axonal and permanent damage to the central nervous system, necessitating healing owing to autoimmune reactions and persistent neuroinflammation. Antioxidant and anti-inflammatory drugs are essential for the management of oxidative stress and neuroinflammation. Additionally, multivitamin supplementation, particularly vitamin B12 (cobalamin), may be beneficial for neuronal protection. Although there is no documented connection between vitamin B12 deficiency and MS, researchers have explored its potential as a metabolic cause. This review highlights the therapeutic benefits of cobalamin (Cbl) in patients with MS.
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Affiliation(s)
- Marjan Golabi
- Applied Physiology Research Center, Cardiovascular Research Institute, Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Danial Kazemi
- Student Research Committee, Isfahan University of Medical Science, Isfahan, Iran
| | | | - Hamed Fouladseresht
- Applied Physiology Research Center, Cardiovascular Research Institute, Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mark J M Sullman
- Department of Life and Health Sciences, University of Nicosia, Nicosia, Cyprus
- Department of Social Sciences, University of Nicosia, Nicosia, Cyprus
| | - Behrooz Ghezelbash
- Laboratory Hematology and Blood Banking, School of Allied Medical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Ava Yeganegi Dastgerdi
- Department of Cell and Molecular Biology, Falavarjan Branch, Islamic Azad University of Science, Isfahan, Iran
| | - Nahid Eskandari
- Applied Physiology Research Center, Cardiovascular Research Institute, Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
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Friedli C, Krajnc N, Hammer HN, Marti S, Zrzavy T, Evangelopoulos ME, Kapsali I, Rommer P, Berger T, Chan A, Bsteh G, Hoepner R. Different lymphocyte counts of multiple sclerosis patients treated with ofatumumab and ocrelizumab: A retrospective observational study. J Cent Nerv Syst Dis 2024; 16:11795735241249644. [PMID: 38711956 PMCID: PMC11072073 DOI: 10.1177/11795735241249644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 03/08/2024] [Indexed: 05/08/2024] Open
Abstract
Introduction Patients with Multiple Sclerosis (pwMS) treated with anti-CD20 (cluster of differentiation) monoclonal antibodies (mAbs) such as ocrelizumab (OCR) and ofatumumab (OFA) show a reduction mainly of B-lymphocytes, but also other lymphocyte subsets can be affected by these treatments. There is limited data on differences between lymphocyte subset counts of pwMS after treatment initiation with OCR or OFA. Objective To compare lymphocyte subset counts after treatment initiation in pwMS treated with OCR and OFA. Methods We analyzed 22 pwMS initiated on OFA and 56 sex-, age- and MS course matched pwMS initiated on OCR from 2 prospectively collected observational MS databases (Bern [n: OFA 14, OCR 44] and Vienna [n: OFA 8, OCR 12]) statistically comparing lymphocyte subset counts (Mann Whitney Test). Results We found that pwMS treated with OCR showed a stronger reduction of CD20 B-lymphocytes (P = .001), and a trend towards lower counts of CD8+ T cells (P = .056) compared to pwMS treated with OFA, whereas reduction of total lymphocyte, CD4+ lymphocyte and NK cell count was equally distributed between both treatments. Conclusion Different effects on lymphocyte subpopulations appear to be present in pwMS after treatment initiation with different anti-CD20 mAbs. Further studies are needed to determine potential effects on anti-CD20 treatment efficacy as well as treatment associated risks such as failed vaccinations and infections.
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Affiliation(s)
- Christoph Friedli
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Switzerland
- Department of Neurology, Waikato Hospital, Hamilton, New Zealand
| | - Nik Krajnc
- Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, Vienna, Austria
- Department of Neurology, Medical University of Vienna, Wien, Austria
| | - Helly N. Hammer
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Switzerland
| | - Stefanie Marti
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Switzerland
| | - Tobias Zrzavy
- Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, Vienna, Austria
- Department of Neurology, Medical University of Vienna, Wien, Austria
| | - Maria E. Evangelopoulos
- Department of Neurology, Eginition University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Ioanna Kapsali
- Department of Neurology, Eginition University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Paulus Rommer
- Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, Vienna, Austria
- Department of Neurology, Medical University of Vienna, Wien, Austria
| | - Thomas Berger
- Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, Vienna, Austria
- Department of Neurology, Medical University of Vienna, Wien, Austria
| | - Andrew Chan
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Switzerland
| | - Gabriel Bsteh
- Comprehensive Center for Clinical Neurosciences and Mental Health, Medical University of Vienna, Vienna, Austria
- Department of Neurology, Medical University of Vienna, Wien, Austria
| | - Robert Hoepner
- Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Switzerland
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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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Fu C, Wang J, Ma T, Yin C, Zhou L, Clausen BE, Mi QS, Jiang A. β-Catenin in Dendritic Cells Negatively Regulates CD8 T Cell Immune Responses through the Immune Checkpoint Molecule Tim-3. Vaccines (Basel) 2024; 12:460. [PMID: 38793711 PMCID: PMC11125945 DOI: 10.3390/vaccines12050460] [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: 03/16/2024] [Revised: 04/15/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024] Open
Abstract
Recent studies have demonstrated that β-catenin in dendritic cells (DCs) serves as a key mediator in promoting both CD4 and CD8 T cell tolerance, although the mechanisms underlying how β-catenin exerts its functions remain incompletely understood. Here, we report that activation of β-catenin leads to the up-regulation of inhibitory molecule T-cell immunoglobulin and mucin domain 3 (Tim-3) in type 1 conventional DCs (cDC1s). Using a cDC1-targeted vaccine model with anti-DEC-205 engineered to express the melanoma antigen human gp100 (anti-DEC-205-hgp100), we demonstrated that CD11c-β-cateninactive mice exhibited impaired cross-priming and memory responses of gp100-specific CD8 T (Pmel-1) cells upon immunization with anti-DEC-205-hgp100. Single-cell RNA sequencing (scRNA-seq) analysis revealed that β-catenin in DCs negatively regulated transcription programs for effector function and proliferation of primed Pmel-1 cells, correlating with suppressed CD8 T cell immunity in CD11c-β-cateninactive mice. Further experiments showed that treating CD11c-β-cateninactive mice with an anti-Tim-3 antibody upon anti-DEC-205-hgp100 vaccination led to restored cross-priming and memory responses of gp100-specific CD8 T cells, suggesting that anti-Tim-3 treatment likely synergizes with DC vaccines to improve their efficacy. Indeed, treating B16F10-bearing mice with DC vaccines using anti-DEC-205-hgp100 in combination with anti-Tim-3 treatment resulted in significantly reduced tumor growth compared with treatment with the DC vaccine alone. Taken together, we identified the β-catenin/Tim-3 axis as a potentially novel mechanism to inhibit anti-tumor CD8 T cell immunity and that combination immunotherapy of a DC-targeted vaccine with anti-Tim-3 treatment leads to improved anti-tumor efficacy.
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Affiliation(s)
- Chunmei Fu
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health, Detroit, MI 48202, USA; (C.F.); (J.W.); (C.Y.); (L.Z.)
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI 48202, USA
- College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
| | - Jie Wang
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health, Detroit, MI 48202, USA; (C.F.); (J.W.); (C.Y.); (L.Z.)
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI 48202, USA
- College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
| | - Tianle Ma
- Department of Computer Science and Engineering, School of Engineering and Computer Science, Oakland University, Rochester, MI 48309, USA;
| | - Congcong Yin
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health, Detroit, MI 48202, USA; (C.F.); (J.W.); (C.Y.); (L.Z.)
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI 48202, USA
- College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
| | - Li Zhou
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health, Detroit, MI 48202, USA; (C.F.); (J.W.); (C.Y.); (L.Z.)
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI 48202, USA
- College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
- Department of Internal Medicine, Henry Ford Health, Detroit, MI 48202, USA
| | - Björn E. Clausen
- Institute for Molecular Medicine, Paul Klein Center for Immune Intervention, University Medical Center of the Johannes Gutenberg-University Mainz, Langenbeckstrasse 1, 55131 Mainz, Germany;
| | - Qing-Sheng Mi
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health, Detroit, MI 48202, USA; (C.F.); (J.W.); (C.Y.); (L.Z.)
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI 48202, USA
- College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
- Department of Internal Medicine, Henry Ford Health, Detroit, MI 48202, USA
| | - Aimin Jiang
- Center for Cutaneous Biology and Immunology, Department of Dermatology, Henry Ford Health, Detroit, MI 48202, USA; (C.F.); (J.W.); (C.Y.); (L.Z.)
- Immunology Program, Henry Ford Cancer Institute, Henry Ford Health, Detroit, MI 48202, USA
- College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
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7
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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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8
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Herold N, Bruhns M, Babaei S, Spreuer J, Castagna A, Yurttas C, Scheuermann S, Seitz C, Ruf B, Königsrainer A, Jurmeister P, Löffler MW, Claassen M, Wistuba-Hamprecht K. High-dimensional in situ proteomics imaging to assess γδ T cells in spatial biology. J Leukoc Biol 2024; 115:750-759. [PMID: 38285597 DOI: 10.1093/jleuko/qiad167] [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: 04/15/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/31/2024] Open
Abstract
This study presents a high-dimensional immunohistochemistry approach to assess human γδ T cell subsets in their native tissue microenvironments at spatial resolution, a hitherto unmet scientific goal due to the lack of established antibodies and required technology. We report an integrated approach based on multiplexed imaging and bioinformatic analysis to identify γδ T cells, characterize their phenotypes, and analyze the composition of their microenvironment. Twenty-eight γδ T cell microenvironments were identified in tissue samples from fresh frozen human colon and colorectal cancer where interaction partners of the immune system, but also cancer cells were discovered in close proximity to γδ T cells, visualizing their potential contributions to cancer immunosurveillance. While this proof-of-principle study demonstrates the potential of this cutting-edge technology to assess γδ T cell heterogeneity and to investigate their microenvironment, future comprehensive studies are warranted to associate phenotypes and microenvironment profiles with features such as relevant clinical characteristics.
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Affiliation(s)
- Nicola Herold
- Department of Internal Medicine I, University Hospital Tübingen, Otfried-Müller-Straße 10, 72076 Tübingen, Germany
- M3 Research Center for Malignome, Metabolome and Microbiome, Faculty of Medicine, University Tübingen, Otfried-Müller-Straße 37, 72076 Tübingen, Germany
| | - Matthias Bruhns
- Department of Internal Medicine I, University Hospital Tübingen, Otfried-Müller-Straße 10, 72076 Tübingen, Germany
- M3 Research Center for Malignome, Metabolome and Microbiome, Faculty of Medicine, University Tübingen, Otfried-Müller-Straße 37, 72076 Tübingen, Germany
- Department of Computer Science, Eberhard Karls University of Tübingen, Sand 14, 72076 Tübingen, Germany
- Institute of Biomedical Informatics, University Hospital Tübingen, Eberhard Karls University of Tübingen, Sand 14, 72076 Tübingen, Germany
| | - Sepideh Babaei
- Department of Internal Medicine I, University Hospital Tübingen, Otfried-Müller-Straße 10, 72076 Tübingen, Germany
- M3 Research Center for Malignome, Metabolome and Microbiome, Faculty of Medicine, University Tübingen, Otfried-Müller-Straße 37, 72076 Tübingen, Germany
- Department of Computer Science, Eberhard Karls University of Tübingen, Sand 14, 72076 Tübingen, Germany
- Institute of Biomedical Informatics, University Hospital Tübingen, Eberhard Karls University of Tübingen, Sand 14, 72076 Tübingen, Germany
| | - Janine Spreuer
- Department of Internal Medicine I, University Hospital Tübingen, Otfried-Müller-Straße 10, 72076 Tübingen, Germany
- M3 Research Center for Malignome, Metabolome and Microbiome, Faculty of Medicine, University Tübingen, Otfried-Müller-Straße 37, 72076 Tübingen, Germany
| | - Arianna Castagna
- Department of General, Visceral and Transplant Surgery, University Hospital Tübingen, Hoppe-Seyler-Straße 3, 72076 Tübingen, Germany
| | - Can Yurttas
- Department of General, Visceral and Transplant Surgery, University Hospital Tübingen, Hoppe-Seyler-Straße 3, 72076 Tübingen, Germany
| | - Sophia Scheuermann
- Department of Pediatric Hematology and Oncology, University Hospital Tübingen, Hoppe-Seyler-Straße 1, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies," Tübingen, Germany
| | - Christian Seitz
- Department of Pediatric Hematology and Oncology, University Hospital Tübingen, Hoppe-Seyler-Straße 1, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies," Tübingen, Germany
| | - Benjamin Ruf
- Department of Internal Medicine I, University Hospital Tübingen, Otfried-Müller-Straße 10, 72076 Tübingen, Germany
- M3 Research Center for Malignome, Metabolome and Microbiome, Faculty of Medicine, University Tübingen, Otfried-Müller-Straße 37, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies," Tübingen, Germany
| | - Alfred Königsrainer
- Department of General, Visceral and Transplant Surgery, University Hospital Tübingen, Hoppe-Seyler-Straße 3, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies," Tübingen, Germany
| | - Philipp Jurmeister
- Institute of Pathology, Ludwig Maximilians University Hospital Munich, Thalkirchner Straße 36, 80337 Munich, Germany
- German Cancer Consortium, Partner Site Munich, and German Cancer Research Center, Heidelberg, Germany
| | - Markus W Löffler
- Department of General, Visceral and Transplant Surgery, University Hospital Tübingen, Hoppe-Seyler-Straße 3, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies," Tübingen, Germany
- Department of Immunology, Interfaculty Institute for Cell Biology, Eberhard Karls University Tübingen, Auf der Morgenstelle 15, 72076 Tübingen, Germany
- Institute for Clinical and Experimental Transfusion Medicine, Medical Faculty of Tübingen, University Hospital Tübingen, Otfried-Müller-Straße 4/1, 72076 Tübingen, Germany
- German Cancer Consortium, Partner Site Tübingen, and German Cancer Research Center, Heidelberg, Germany
| | - Manfred Claassen
- Department of Internal Medicine I, University Hospital Tübingen, Otfried-Müller-Straße 10, 72076 Tübingen, Germany
- M3 Research Center for Malignome, Metabolome and Microbiome, Faculty of Medicine, University Tübingen, Otfried-Müller-Straße 37, 72076 Tübingen, Germany
- Department of Computer Science, Eberhard Karls University of Tübingen, Sand 14, 72076 Tübingen, Germany
- Institute of Biomedical Informatics, University Hospital Tübingen, Eberhard Karls University of Tübingen, Sand 14, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies," Tübingen, Germany
| | - Kilian Wistuba-Hamprecht
- Department of Internal Medicine I, University Hospital Tübingen, Otfried-Müller-Straße 10, 72076 Tübingen, Germany
- M3 Research Center for Malignome, Metabolome and Microbiome, Faculty of Medicine, University Tübingen, Otfried-Müller-Straße 37, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided and Functionally Instructed Tumor Therapies," Tübingen, Germany
- Department of Immunology, Interfaculty Institute for Cell Biology, Eberhard Karls University Tübingen, Auf der Morgenstelle 15, 72076 Tübingen, Germany
- German Cancer Consortium, Partner Site Tübingen, and German Cancer Research Center, Heidelberg, Germany
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9
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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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11
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Groß-Albenhausen E, Weier A, Velten M, Heider T, Chunder R, Kuerten S. Immune monitoring of SARS-CoV-2-specific T cell and B cell responses in patients with multiple sclerosis treated with ocrelizumab. Front Immunol 2023; 14:1254128. [PMID: 37841269 PMCID: PMC10569464 DOI: 10.3389/fimmu.2023.1254128] [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: 07/06/2023] [Accepted: 08/30/2023] [Indexed: 10/17/2023] Open
Abstract
Introduction Since the development of the coronavirus disease (COVID-19) pandemic caused by severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2), there has been significant interest in determining the effectiveness of SARS-CoV-2 vaccines in patients under immunomodulatory or immunosuppressive therapies. The aim of this study was to evaluate the impact of ocrelizumab, a monoclonal anti-CD20 antibody, on SARS-CoV-2-specific T cell and B cell responses in patients with relapsing-remitting multiple sclerosis (RRMS). Methods To this end, peripheral blood mononuclear cells (PBMCs) were isolated from n = 23 patients with RRMS. Of these patients, n = 17 were tested before (time point t0) and one month after (time point t1) their first dose of ocrelizumab. In addition, we studied n = 9 RRMS patients that got infected with SARS-CoV-2 over the course of ocrelizumab therapy (time point t2). PBMCs were also isolated from n = 19 age- and gender-matched healthy controls (HCs) after vaccination or infection with SARS-CoV-2, respectively. Interferon-γ (IFN-γ)/interleukin-2 (IL-2) and granzyme B (GzB)/perforin (PFN) double-color enzyme-linked immunospot (ELISPOT) assays or single-color ELISPOT assays were performed to measure SARS-CoV-2 antigen-specific T cell and B cell responses. Anti-viral antibody titers were quantified in the serum by chemiluminescence immunoassay. Results Our data indicate a significant difference in the SARS-CoV-2 specific IFN-γ (P = 0.0119) and PFN (P = 0.0005) secreting T cell compartment in the MS cohort at t0 compared to HCs. Following the first dose of ocrelizumab treatment, a significant decrease in the number of SARS-CoV-2 spike protein-specific B cells was observed (P = 0.0012). Infection with SARS-CoV-2 in MS patients under ocrelizumab therapy did not significantly alter their existing immune response against the virus. Kaplan-Meier survival analysis suggested that the spike S1 protein-specific immunoglobulin (Ig)G response might be a key parameter for predicting the probability of (re)infection with SARS-CoV-2. Discussion Our results call for a critical discussion regarding appropriate vaccination intervals and potential biomarkers for the prediction of (re)infection with SARS-CoV-2 in patients with MS receiving ocrelizumab. Unique identifier DRKS00029110; URL: http://apps.who.int/trialsearch/.
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Affiliation(s)
- Elina Groß-Albenhausen
- Institute of Neuroanatomy, Faculty of Medicine, University of Bonn and University Hospital Bonn, Bonn, Germany
| | - Alicia Weier
- Institute of Neuroanatomy, Faculty of Medicine, University of Bonn and University Hospital Bonn, Bonn, Germany
| | - Markus Velten
- Department of Anesthesiology and Intensive Care Medicine, University Medical Center Bonn, Bonn, Germany
| | - Thorsten Heider
- Clinic for Neurology, Klinikum St. Marien Amberg, Amberg, Germany
| | - Rittika Chunder
- Institute of Neuroanatomy, Faculty of Medicine, University of Bonn and University Hospital Bonn, Bonn, Germany
| | - Stefanie Kuerten
- Institute of Neuroanatomy, Faculty of Medicine, University of Bonn and University Hospital Bonn, Bonn, Germany
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12
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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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13
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Szabó E, Modok S, Rónaszéki B, Faragó A, Gémes N, Nagy LI, Hackler L, Farkas K, Neuperger P, Balog JÁ, Balog A, Puskás LG, Szebeni GJ. Comparison of humoral and cellular immune responses in hematologic diseases following completed vaccination protocol with BBIBP-CorV, or AZD1222, or BNT162b2 vaccines against SARS-CoV-2. Front Med (Lausanne) 2023; 10:1176168. [PMID: 37529238 PMCID: PMC10389666 DOI: 10.3389/fmed.2023.1176168] [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: 02/28/2023] [Accepted: 06/23/2023] [Indexed: 08/03/2023] Open
Abstract
Background Vaccination has proven the potential to control the COVID-19 pandemic worldwide. Although recent evidence suggests a poor humoral response against SARS-CoV-2 in vaccinated hematological disease (HD) patients, data on vaccination in these patients is limited with the comparison of mRNA-based, vector-based or inactivated virus-based vaccines. Methods Forty-nine HD patients and 46 healthy controls (HCs) were enrolled who received two-doses complete vaccination with BNT162b2, or AZD1222, or BBIBP-CorV, respectively. The antibodies reactive to the receptor binding domain of spike protein of SARS-CoV-2 were assayed by Siemens ADVIA Centaur assay. The reactive cellular immunity was assayed by flow cytometry. The PBMCs were reactivated with SARS-CoV-2 antigens and the production of activation-induced markers (TNF-α, IFN-γ, CD40L) was measured in CD4+ or CD8+ T-cells ex vivo. Results The anti-RBD IgG level was the highest upon BNT162b2 vaccination in HDs (1264 BAU/mL) vs. HCs (1325 BAU/mL) among the studied groups. The BBIBP-CorV vaccination in HDs (339.8 BAU/mL ***p < 0.001) and AZD1222 in HDs (669.9 BAU/mL *p < 0.05) resulted in weaker antibody response vs. BNT162b2 in HCs. The response rate of IgG production of HC vs. HD patients above the diagnostic cut-off value was 100% vs. 72% for the mRNA-based BNT162b2 vaccine; 93% vs. 56% for the vector-based AZD1222, or 69% vs. 33% for the inactivated vaccine BBIBP-CorV, respectively. Cases that underwent the anti-CD20 therapy resulted in significantly weaker (**p < 0.01) anti-RBD IgG level (302 BAU/mL) than without CD20 blocking in the HD group (928 BAU/mL). The response rates of CD4+ TNF-α+, CD4+ IFN-γ+, or CD4+ CD40L+ cases were lower in HDs vs. HCs in all vaccine groups. However, the BBIBP-CorV vaccine resulted the highest CD4+ TNF-α and CD4+ IFN-γ+ T-cell mediated immunity in the HD group. Conclusion We have demonstrated a significant weaker overall response to vaccines in the immunologically impaired HD population vs. HCs regardless of vaccine type. Although, the humoral immune activity against SARS-CoV-2 can be highly evoked by mRNA-based BNT162b2 vaccination compared to vector-based AZD1222 vaccine, or inactivated virus vaccine BBIBP-CorV, whereas the CD4+ T-cell mediated cellular activity was highest in HDs vaccinated with BBIBP-CorV.
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Affiliation(s)
- Enikő Szabó
- Laboratory of Functional Genomics, Biological Research Centre, Szeged, Hungary
| | - Szabolcs Modok
- Department of Medicine, Szent-Györgyi Albert Medical School-University of Szeged, Szeged, Hungary
| | - Benedek Rónaszéki
- Department of Medicine, Szent-Györgyi Albert Medical School-University of Szeged, Szeged, Hungary
| | - Anna Faragó
- Avidin Ltd., Szeged, Hungary
- Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Nikolett Gémes
- Laboratory of Functional Genomics, Biological Research Centre, Szeged, Hungary
- Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | | | | | | | - Patrícia Neuperger
- Laboratory of Functional Genomics, Biological Research Centre, Szeged, Hungary
- Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - József Á. Balog
- Laboratory of Functional Genomics, Biological Research Centre, Szeged, Hungary
| | - Attila Balog
- Department of Rheumatology and Immunology, Faculty of Medicine, Albert Szent-Gyorgyi Health Centre, University of Szeged, Szeged, Hungary
| | - László G. Puskás
- Laboratory of Functional Genomics, Biological Research Centre, Szeged, Hungary
- Avidin Ltd., Szeged, Hungary
- Avicor Ltd., Szeged, Hungary
| | - Gabor J. Szebeni
- Laboratory of Functional Genomics, Biological Research Centre, Szeged, Hungary
- Department of Physiology, Anatomy and Neuroscience, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
- CS-Smartlab Devices, Kozarmisleny, Hungary
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14
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Erlandsson A, Lundholm M, Watz J, Bergh A, Petrova E, Alamdari F, Helleday T, Davidsson S, Andren O, Tarish F. Infiltrating immune cells in prostate cancer tissue after androgen deprivation and radiotherapy. Int J Immunopathol Pharmacol 2023; 37:3946320231158025. [PMID: 36880147 PMCID: PMC9996739 DOI: 10.1177/03946320231158025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
OBJECTIVES Androgen deprivation therapy (ADT) has long been a cornerstone in treatment of advanced prostate cancer (PCa), and is known to improve the results of radiotherapy (RT) for high-risk disease. The purpose of our study was to use a multiplexed immunohistochemical (mIHC) approach to investigate the infiltration of immune cells in PCa tissue after eight weeks of ADT and/or RT with 10 Gy. METHODS From a cohort of 48 patients divided into two treatment arms, we obtained biopsies before and after treatment and used a mIHC method with multispectral imaging to analyze the infiltration of immune cells in tumor stroma and tumor epithelium, focusing on areas with high infiltration. RESULTS Tumor stroma showed a significantly higher infiltration of immune cells compared to tumor epithelium. The most prominent immune cells were CD20+ B-lymphocytes, followed by CD68+ macrophages, CD8+ cytotoxic T-cells, FOXP3+ regulatory T-cells (Tregs), and T-bet+ Th1-cells. Neoadjuvant ADT followed by RT significantly increased the infiltration of all five immune cells. Numbers of Th1-cells and Tregs significantly increased after single treatment with ADT or RT. In addition, ADT alone increased the number of cytotoxic T-cells and RT increased the number of B-cells. CONCLUSIONS Neoadjuvant ADT in combination with RT results in a higher inflammatory response compared to RT or ADT alone. The mIHC method may be a useful tool for investigating infiltrating immune cells in PCa biopsies to understand how immunotherapeutic approaches can be combined with current PCa therapies.
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Affiliation(s)
- Ann Erlandsson
- Department of Urology, Faculty of Medicine and Health, 59566Örebro University, Örebro, Sweden.,Department of Environmental and Life Sciences/Biology, 101086Karlstad University, Karlstad, Sweden
| | - Marie Lundholm
- Department of Medical Biosciences, 377074Umeå University, Umeå, Sweden
| | - Johan Watz
- Department of Environmental and Life Sciences/Biology, 101086Karlstad University, Karlstad, Sweden
| | - Anders Bergh
- Department of Medical Biosciences, 377074Umeå University, Umeå, Sweden
| | - Elitsa Petrova
- Department of Clinical Pathology and Cytology, 59594Central Hospital Karlstad, Karlstad, Sweden
| | - Farhood Alamdari
- Department of Urology, 370894Västmanlands Hospital, Västerås, Sweden
| | - Thomas Helleday
- Department of Oncology-Pathology, Karolinska Institutet, 463758Science for Life Laboratory, Stockholm, Sweden
| | - Sabina Davidsson
- Department of Urology, Faculty of Medicine and Health, 59566Örebro University, Örebro, Sweden
| | - Ove Andren
- Department of Urology, Faculty of Medicine and Health, 59566Örebro University, Örebro, Sweden
| | - Firas Tarish
- Department of Oncology-Pathology, Karolinska Institutet, 463758Science for Life Laboratory, Stockholm, Sweden
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15
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Blincoe A, Labrosse R, Abraham RS. Acquired B-cell deficiency secondary to B-cell-depleting therapies. J Immunol Methods 2022; 511:113385. [PMID: 36372267 DOI: 10.1016/j.jim.2022.113385] [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: 06/19/2022] [Revised: 09/26/2022] [Accepted: 10/17/2022] [Indexed: 11/13/2022]
Abstract
The advantage of the newer biological therapies is that the immunosuppressive effect is targeted, in contrast, to the standard, traditional immunomodulatory agents, which have a more global effect. However, there are unintended targets and consequences, even to these "precise" therapeutics, leading to acquired or secondary immunodeficiencies. Besides depleting specific cellular immune subsets, these biological agents, which include monoclonal antibodies against biologically relevant molecules, often have broader functional immune consequences, which become apparent over time. This review focuses on acquired B-cell immunodeficiency, secondary to the use of B-cell depleting therapeutic agents. Among the many adverse consequences of B-cell depletion is the risk of hypogammaglobulinemia, failure of B-cell recovery, impaired B-cell differentiation, and risk of infections. Factors, which modulate the outcomes of B-cell depleting therapies, include the intrinsic nature of the underlying disease, the concomitant use of other immunomodulatory agents, and the clinical status of the patient and other co-existing morbidities. This article seeks to explore the mechanism of action of B-cell depleting agents, the clinical utility and adverse effects of these therapies, and the relevance of systematic and serial laboratory immune monitoring in identifying patients at risk for developing immunological complications, and who may benefit from early intervention to mitigate the secondary consequences. Though these biological drugs are gaining widespread use, a harmonized approach to immune evaluation pre-and post-treatment has not yet gained traction across multiple clinical specialties, because of which, the true prevalence of these adverse events cannot be determined in the treated population, and a systematic and evidence-based dosing schedule cannot be developed. The aim of this review is to bring these issues into focus, and initiate a multi-specialty, data-driven approach to immune monitoring.
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Affiliation(s)
- Annaliesse Blincoe
- Department of Paediatric Immunology and Allergy, Starship Child Health, Auckland, NZ, New Zealand
| | - Roxane Labrosse
- Department of Pediatrics, CHU Sainte-Justine, University of Montreal, Montreal, Canada
| | - Roshini S Abraham
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, OH, USA.
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16
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Kakkassery H, Carpenter E, Patten PEM, Irshad S. Immunogenicity of SARS-CoV-2 vaccines in patients with cancer. Trends Mol Med 2022; 28:1082-1099. [PMID: 35999131 PMCID: PMC9345889 DOI: 10.1016/j.molmed.2022.07.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/30/2022] [Accepted: 07/27/2022] [Indexed: 01/21/2023]
Abstract
Transmission of the SARS-CoV-2 virus and its corresponding disease (COVID-19) has been shown to impose a higher burden on cancer patients than on the general population. Approved vaccines for use include new technology mRNA vaccines such as BNT162b2 (Pfizer-BioNTech) and mRNA-1273 (Moderna), and nonreplicating viral vector vaccines such as Ad26.COV2.S (Johnson & Johnson) and AZD1222 (AstraZeneca). Impaired or delayed humoral and diminished T-cell responses are evident in patients with cancer, especially in patients with haematological cancers or those under active chemotherapy. Herein we review the current data on vaccine immunogenicity in cancer patients, including recommendations for current practice and future research.
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Affiliation(s)
- Helen Kakkassery
- Comprehensive Cancer Centre, School of Cancer & Pharmaceutical Sciences, King's College London, London, UK
| | - Esme Carpenter
- Comprehensive Cancer Centre, School of Cancer & Pharmaceutical Sciences, King's College London, London, UK
| | - Piers E M Patten
- Comprehensive Cancer Centre, School of Cancer & Pharmaceutical Sciences, King's College London, London, UK; Department of Haematological Medicine, King's College Hospital, London, UK
| | - Sheeba Irshad
- Comprehensive Cancer Centre, School of Cancer & Pharmaceutical Sciences, King's College London, London, UK; Breast Cancer Now Research Unit, King's College London, London, UK; Guy's and St Thomas' NHS Foundation Trust, London, UK.
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17
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Liu R, Du S, Zhao L, Jain S, Sahay K, Rizvanov A, Lezhnyova V, Khaibullin T, Martynova E, Khaiboullina S, Baranwal M. Autoreactive lymphocytes in multiple sclerosis: Pathogenesis and treatment target. Front Immunol 2022; 13:996469. [PMID: 36211343 PMCID: PMC9539795 DOI: 10.3389/fimmu.2022.996469] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 09/08/2022] [Indexed: 11/13/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system (CNS) characterized by destruction of the myelin sheath structure. The loss of myelin leads to damage of a neuron’s axon and cell body, which is identified as brain lesions on magnetic resonance image (MRI). The pathogenesis of MS remains largely unknown. However, immune mechanisms, especially those linked to the aberrant lymphocyte activity, are mainly responsible for neuronal damage. Th1 and Th17 populations of lymphocytes were primarily associated with MS pathogenesis. These lymphocytes are essential for differentiation of encephalitogenic CD8+ T cell and Th17 lymphocyte crossing the blood brain barrier and targeting myelin sheath in the CNS. B-lymphocytes could also contribute to MS pathogenesis by producing anti-myelin basic protein antibodies. In later studies, aberrant function of Treg and Th9 cells was identified as contributing to MS. This review summarizes the aberrant function and count of lymphocyte, and the contributions of these cell to the mechanisms of MS. Additionally, we have outlined the novel MS therapeutics aimed to amend the aberrant function or counts of these lymphocytes.
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Affiliation(s)
- Rongzeng Liu
- Department of Immunology, School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Shushu Du
- Department of Immunology, School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Lili Zhao
- Department of Immunology, School of Basic Medical Sciences, Henan University of Science and Technology, Luoyang, China
| | - Sahil Jain
- Department of Biochemistry and Molecular Biology, Faculty of Life Sciences, Tel-Aviv University, Tel-Aviv, Israel
| | - Kritika Sahay
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
| | - Albert Rizvanov
- Gene and cell Department, Kazan Federal University, Kazan, Russia
| | - Vera Lezhnyova
- Gene and cell Department, Kazan Federal University, Kazan, Russia
| | - Timur Khaibullin
- Neurological Department, Republican Clinical Neurological Center, Kazan, Russia
| | | | - Svetlana Khaiboullina
- Gene and cell Department, Kazan Federal University, Kazan, Russia
- *Correspondence: Svetlana Khaiboullina, ; Manoj Baranwal, ;
| | - Manoj Baranwal
- Department of Biotechnology, Thapar Institute of Engineering and Technology, Patiala, India
- *Correspondence: Svetlana Khaiboullina, ; Manoj Baranwal, ;
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18
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The Role of T Cells in Systemic Sclerosis: An Update. IMMUNO 2022. [DOI: 10.3390/immuno2030034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Systemic sclerosis (SSc) is a chronic disease characterized by microvasculopathy, autoantibodies (autoAbs), and fibrosis. The pathogenesis of the disease is incompletely understood. Microvasculopathy and autoAbs appear very early in the disease process. AutoAbs, such as those directed against DNA topoisomerase I (Topo I), are disease specific and associated with disease manifestations, and indicate activation of the adaptive immune system. B cells are involved in fibrosis in SSc. T cells are also involved in disease pathogenesis. T cells show signs of antigen-induced activation; T cells of TH2 type are increased and produce profibrotic cytokines interleukin (IL)-4, IL-13, and IL-31; CD4+ cytotoxic T lymphocytes are increased in skin lesions, and cause fibrosis and endothelial cell apoptosis; circulating T follicular helper (TFH) cells are increased in SSc produce IL-21 and promote plasmablast antibody production. On the other hand, regulatory T cells are impaired in SSc. These findings provide strong circumstantial evidence for T cell implication in SSc pathogenesis and encourage new T cell-directed therapeutic strategies for the disease.
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19
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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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