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Lucane Z, Slisere B, Gersone G, Papirte S, Gailite L, Tretjakovs P, Kurjane N. Cytokine Response Following SARS-CoV-2 Antigen Stimulation in Patients with Predominantly Antibody Deficiencies. Viruses 2023; 15:v15051146. [PMID: 37243231 DOI: 10.3390/v15051146] [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: 03/29/2023] [Revised: 05/02/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Predominantly antibody deficiencies (PADs) are inborn disorders characterized by immune dysregulation and increased susceptibility to infections. Response to vaccination, including severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), may be impaired in these patients, and studies on responsiveness correlates, including cytokine signatures to antigen stimulation, are sparse. In this study, we aimed to describe the spike-specific cytokine response following whole-blood stimulation with SARS-CoV-2 spike peptides in patients with PAD (n = 16 with common variable immunodeficiency and n = 15 with selective IgA deficiency) and its relationship with the occurrence of coronavirus disease 2019 (COVID-19) during up to 10-month follow-up period. Spike-induced antibody and cytokine production was measured using ELISA (anti-spike IgG, IFN-γ) and xMAP technology (interleukin-1β (IL-1β), IL-4, IL-6, IL-10, IL-15, IL-17A, IL-21, TNF-α, TGF-β1). No difference was found in the production of cytokines between patients with PAD and controls. Anti-spike IgG and cytokine levels did not predict contraction of COVID-19. The only cytokine that distinguished between vaccinated and naturally infected unvaccinated PAD patients was IFN-γ (median 0.64 (IQR = 1.08) in vaccinated vs. 0.10 (IQR = 0.28) in unvaccinated). This study describes the spike-specific cytokine response to SARS-CoV-2 antigens, which is not predictive of contracting COVID-19 during the follow-up.
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Affiliation(s)
- Zane Lucane
- Department of Biology and Microbiology, Riga Stradins University, LV-1007 Riga, Latvia
| | - Baiba Slisere
- The Joint Laboratory, Pauls Stradins Clinical University Hospital, LV-1002 Riga, Latvia
- Department of Internal Diseases, Riga Stradins University, LV-1007 Riga, Latvia
| | - Gita Gersone
- Department of Human Physiology and Biochemistry, Riga Stradins University, LV-1007 Riga, Latvia
| | - Sindija Papirte
- Faculty of Medicine, Riga Stradins University, LV-1007 Riga, Latvia
| | - Linda Gailite
- Scientific Laboratory of Molecular Genetics, Riga Stradins University, LV-1007 Riga, Latvia
| | - Peteris Tretjakovs
- Department of Human Physiology and Biochemistry, Riga Stradins University, LV-1007 Riga, Latvia
| | - Natalja Kurjane
- Department of Biology and Microbiology, Riga Stradins University, LV-1007 Riga, Latvia
- Outpatient Clinic, Pauls Stradins Clinical University Hospital, LV-1002 Riga, Latvia
- Outpatient Clinic, Children's Clinical University Hospital, LV-1004 Riga, Latvia
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Amato G, Vita F, Quattrocchi P, Minciullo PL, Pioggia G, Gangemi S. Involvement of miR-142 and miR-155 in Non-Infectious Complications of CVID. Molecules 2020; 25:molecules25204760. [PMID: 33081305 PMCID: PMC7587593 DOI: 10.3390/molecules25204760] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND AND OBJECTIVES Common variable immunodeficiency (CVID) is the most prevalent antibody impairment. It is characterized by failure in immunoglobulin and protective antibody generation and defined by an increased tendency toward bacterial infections, autoimmunity, and malignancy. Most CVID diagnoses do not follow a classical Mendelian pattern of inheritance. In recent years, CVID has been considered an epigenetic phenomenon in the majority of cases, overtaking previous monogenetic and/or polygenetic theories. The aim of this study was to review the role of microRNAs (miRNAs) in CVID, focusing on the involvement of the same miRNAs in various non-infectious clinical complications of CVID, mainly autoimmunity and/or cancer. MATERIALS AND METHODS A bibliographic search of the scientific literature was carried out independently by two researchers in scientific databases and search engines. The MeSH terms "microRNAs" and "common variable immunodeficiency" were used. All research articles from inception to May 2020 were considered. RESULTS The literature data showed the involvement of two miRNAs in primary immunodeficiency: miR-142 and miR-155. Both of these miRNAs have been investigated through mice models, in which miR-142 and miR-155 were deleted. These knock-out (KO) mice models showed phenotypic analogies to CVID patients with hypogammaglobulinemia, adaptive immunodeficiency, polyclonal proliferation, lung disease, and enteric inflammation. miR-142 and miR-155 have been found to be involved in the following autoimmune and neoplastic clinical complications of CVID: Gastric cancer, gastric mucosa-associated lymphoid tissue (MALT) lymphoma, natural killer/Tcell lymphoma (NKTCL), and immune thrombocytopenia. CONCLUSIONS miR-142 and miR-155 deregulation leads to similar CVID phenotypesin KO mice models. Although no data are available on the involvement of these miRNAs in human CVID, their dysregulation has been detected in human CVID comorbidities. The literature data show that miRNA sequences in murine models are comparable to those in humans; therefore, miR-142 and miR-155 involvement in human CVID could be hypothesized.
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Affiliation(s)
- Giuliana Amato
- Operative Unit and School of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (G.A.); (F.V.); (P.Q.); (P.L.M.); (S.G.)
| | - Federica Vita
- Operative Unit and School of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (G.A.); (F.V.); (P.Q.); (P.L.M.); (S.G.)
| | - Paolina Quattrocchi
- Operative Unit and School of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (G.A.); (F.V.); (P.Q.); (P.L.M.); (S.G.)
| | - Paola Lucia Minciullo
- Operative Unit and School of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (G.A.); (F.V.); (P.Q.); (P.L.M.); (S.G.)
| | - Giovanni Pioggia
- Institute for Biomedical Research and Innovation (IRIB), National Research Council of Italy (CNR), 98164 Messina, Italy
- Correspondence:
| | - Sebastiano Gangemi
- Operative Unit and School of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98125 Messina, Italy; (G.A.); (F.V.); (P.Q.); (P.L.M.); (S.G.)
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Yesillik S, Gupta S. Phenotypically defined subpopulations of circulating follicular helper T cells in common variable immunodeficiency. Immun Inflamm Dis 2020; 8:441-446. [PMID: 32618135 PMCID: PMC7416056 DOI: 10.1002/iid3.326] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/10/2020] [Accepted: 06/12/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Common variable immunodeficiency (CVID) is characterized by low immunoglobulin G and IgA/IgM, decreased switched memory B cells, impaired response to vaccine, and an increased susceptibility to infections and autoimmunity. TFH cells play an important role in germinal center reaction where it supports isotype switching, somatic hypermutation, generation of memory B cells, and differentiation of B cells to plasma cells. The objective was to study the distribution of three subsets of TFH cells and their relationship with autoimmune diseases associated with CVID. METHODS TFH cells have been divided into TFH 1 (interleukin 21 [IL-21] and interferon γ), TFH 2 (IL-21 and IL-4), and TFH 17 (IL-21 and IL-17) cells. Mononuclear cells from 25 patients with CVID and age and gender-matched controls were stained with various monoclonal antibodies (anti-CD4 APC, anti-CXCR5 FITC, anti-CCR6 PerCP, and anti-CXCR3 PE) and isotype controls and analyzed for TFH 1 (CD4+ CXCR5+ CXCR3+ CCR6- ), TFH 2 (CD4+ CXCR5+ CXCR3- CCR6- ), and TFH 17 (CD4+ CXCR5+ CXCR3- CCR6+ ) cells by multicolor flow cytometry. Twenty thousand cells were acquired and analyzed by FlowJo software. Statistical analysis of comparison of patients and healthy controls was performed by paired t test using PRISM 7 software. RESULTS TFH 2 and TFH 17 cells subpopulations of TFH cells were significantly decreased (P < .003 and P < .006, respectively) in CVID as compared with controls. No significant difference was observed in any of TFH cell subpopulations between CVID with and those without autoimmunity group. CONCLUSION Alterations in TFH cell subpopulation may play a role in defects in B cell compartment in CVID.
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Affiliation(s)
- Sait Yesillik
- Division of Basic and Clinical ImmunologyUniversity of CaliforniaIrvineCalifornia
| | - Sudhir Gupta
- Division of Basic and Clinical ImmunologyUniversity of CaliforniaIrvineCalifornia
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Zainaldain H, Rizvi FS, Rafiemanesh H, Alizadeh M, Jamee M, Mohammadi S, Kiaee F, Mohammadi H, Babaie F, Yazdani R, Abolhassani H, Aghamohammadi A, Azizi G. Infectious Complications Reporting in Common Variable Immunodeficiency: A Systematic Review and Meta-analysis. Oman Med J 2020; 35:e157. [PMID: 32802416 PMCID: PMC7417520 DOI: 10.5001/omj.2020.64] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 01/14/2019] [Indexed: 01/01/2023] Open
Abstract
Objectives Common variable immunodeficiency (CVID) is a heterogeneous disorder characterized by hypogammaglobulinemia and increased susceptibility to recurrent infections. Methods We searched PubMed, Web of Science, and Scopus databases to find eligible studies from the earliest available date to January 2018 with standard keywords. Pooled estimates of the infection prevalence and the corresponding 95% confidence intervals were calculated using random-effects models. Results We found that pneumonia (67.7%) was the most prevalent infection followed by upper respiratory tract (59.0%) and gastrointestinal infections (36.3%). Furthermore, bacterial complications (41.7%) were higher in CVID patients compared to viral (25.4%), parasitic (18.8%), or fungal (3.4%) infections. Patients with longer age at diagnosis presented with fewer disease comorbidities. There was an inverse correlation between T lymphocyte count and viral infections. Moreover, we found that immunoglobulin M (IgM) serum level was inversely correlated with hepatitis C and gastrointestinal infections, and IgG serum level was inversely correlated with infectious arthritis. Higher numbers of CD4 and CD8 T cells were associated with the lower frequencies of otitis media. CVID patients with infections had significantly lower percentages of CD3 T cells. In contrast, higher percentages of CD19 lymphocytes were found in CVID patients who had a history of infections. Conclusions Our findings demonstrated that in addition to hypogammaglobulinemia, patients with CVID have an imbalance in the frequency of T lymphocytes, which is in parallel with the higher frequency of infectious complications.
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Affiliation(s)
- Hamed Zainaldain
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences,
Tehran, Iran
| | - Fatema Sadaat Rizvi
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences,
Tehran, Iran
| | - Hosein Rafiemanesh
- Student Research Committee, Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mahla Alizadeh
- Student Research Committee, Alborz University of Medical Sciences, Karaj, Iran.,Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Mahnaz Jamee
- Student Research Committee, Alborz University of Medical Sciences, Karaj, Iran.,Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Sara Mohammadi
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences,
Tehran, Iran
| | - Fatemeh Kiaee
- Student Research Committee, Department of Immunology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hamed Mohammadi
- Department of Immunology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Farhad Babaie
- Cellular and Molecular Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Reza Yazdani
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences,
Tehran, Iran
| | - Hassan Abolhassani
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Asghar Aghamohammadi
- Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences,
Tehran, Iran
| | - Gholamreza Azizi
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
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Kasahara TDM, Bento CADM, Gupta S. Phenotypic and Functional Analysis of T Follicular Cells in Common Variable Immunodeficiency. Int Arch Allergy Immunol 2020; 181:635-647. [PMID: 32492690 DOI: 10.1159/000507995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 04/17/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION One of the most frequent abnormalities of B cells in common variable immunodeficiency (CVID) is reduced number of class-switched memory B cells, suggesting an impaired germinal center response. Therefore, due to its pivotal role in regulating the development of humoral immunity, the objective of this study was to evaluate the role of circulating T follicular helper (cTFH) and circulating T follicular regulatory (cTFR) cells in the pathogenesis of CVID. METHODS cTFH and cTFR cells from CVID patients and healthy subjects were phenotypically characterized by flow cytometry. cTFH and memory B cells from CVID patients and healthy subjects were isolated and cocultured. RESULTS Our results showed a reduced proportion of cTFH17 cells in patients with CVID and an increased ratio of cTFH/cTFR cells in CVID patients with autoimmune diseases. Furthermore, the proportion of IL-21-producing cTFH cells was directly related to the proportion of CD27+ IgD- B cells. Interestingly, coculture assay showed that CVID-derived cTFH cells are able to help memory B cells from healthy controls to produce immunoglobulins. CONCLUSIONS The proportions of cTFH17 and cTFR cells are altered in CVID patients; however, the cTFH function in assisting B cells to produce antibodies in vitro is preserved.
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Affiliation(s)
- Taissa de Matos Kasahara
- Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Rio de Janeiro, Brazil, .,Division of Basic and Clinical Immunology, Department of Medicine, University of California, Irvine, Irvine, California, USA,
| | - Cleonice Alves de Melo Bento
- Department of Microbiology, Immunology and Parasitology, State University of Rio de Janeiro, Rio de Janeiro, Brazil.,Department of Microbiology and Parasitology, Federal University of the State of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Sudhir Gupta
- Division of Basic and Clinical Immunology, Department of Medicine, University of California, Irvine, Irvine, California, USA
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Le Saos-Patrinos C, Loizon S, Blanco P, Viallard JF, Duluc D. Functions of Tfh Cells in Common Variable Immunodeficiency. Front Immunol 2020; 11:6. [PMID: 32082308 PMCID: PMC7002358 DOI: 10.3389/fimmu.2020.00006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Accepted: 01/03/2020] [Indexed: 12/28/2022] Open
Abstract
Common variable immunodeficiency is the most common clinical primary immunodeficiency in adults. Its hallmarks are hypogammaglobulinemia and compromised B-cell differentiation into memory or antibody-secreting cells leading to recurrent infections. This disease is heterogeneous, with some patients harboring multiple complications such as lymphoproliferative disorders, autoimmune manifestations, or granulomatous inflammation. The mechanisms leading to these complications remain elusive despite numerous associations found in the literature. For instance, although described as a B cell intrinsic disease, numerous abnormalities have been reported in other immune cell compartments. Here, we tuned our attention to follicular helper T cells, a CD4+ T cell population specialized in B cell help, considering the recent publications showing an involvement of these cells in CVID pathogenesis.
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Affiliation(s)
| | - Séverine Loizon
- ImmunoConcEpT, CNRS-UMR 5164 and Université de Bordeaux, Bordeaux, France
| | - Patrick Blanco
- ImmunoConcEpT, CNRS-UMR 5164 and Université de Bordeaux, Bordeaux, France.,Centre Hospitalier Universitaire de Bordeaux, Service d'Immunologie et Immunogénétique, Bordeaux, France
| | - Jean-François Viallard
- Centre Hospitalier Universitaire de Bordeaux, Service de Médecine Interne, Hôpital du Haut-Lévêque, Pessac, France
| | - Dorothée Duluc
- ImmunoConcEpT, CNRS-UMR 5164 and Université de Bordeaux, Bordeaux, France
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7
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Desjardins M, Arjunaraja S, Stinson JR, Dorjbal B, Sundaresan J, Niemela J, Raffeld M, Matthews HF, Wang A, Angelus P, Su HC, Mazer BD, Snow AL. A Unique Heterozygous CARD11 Mutation Combines Pathogenic Features of Both Gain- and Loss-of-Function Patients in a Four-Generation Family. Front Immunol 2018; 9:2944. [PMID: 30619304 PMCID: PMC6299974 DOI: 10.3389/fimmu.2018.02944] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 11/30/2018] [Indexed: 12/14/2022] Open
Abstract
CARD11 is a lymphocyte-specific scaffold molecule required for proper activation of B- and T-cells in response to antigen. Germline gain-of-function (GOF) mutations in the CARD11 gene cause a unique B cell lymphoproliferative disorder known as B cell Expansion with NF-κB and T cell Anergy (BENTA). In contrast, patients carrying loss-of-function (LOF), dominant negative (DN) CARD11 mutations present with severe atopic disease. Interestingly, both GOF and DN CARD11 variants cause primary immunodeficiency, with recurrent bacterial and viral infections, likely resulting from impaired adaptive immune responses. This report describes a unique four-generation family harboring a novel heterozygous germline indel mutation in CARD11 (c.701-713delinsT), leading to one altered amino acid and a deletion of 4 others (p.His234_Lys238delinsLeu). Strikingly, affected members exhibit both moderate B cell lymphocytosis and atopic dermatitis/allergies. Ectopic expression of this CARD11 variant stimulated constitutive NF-κB activity in T cell lines, similar to other BENTA patient mutations. However, unlike other GOF mutants, this variant significantly impeded the ability of wild-type CARD11 to induce NF-κB activation following antigen receptor ligation. Patient lymphocytes display marked intrinsic defects in B cell differentiation and reduced T cell responsiveness in vitro. Collectively, these data imply that a single heterozygous CARD11 mutation can convey both GOF and DN signaling effects, manifesting in a blended BENTA phenotype with atopic features. Our findings further emphasize the importance of balanced CARD11 signaling for normal immune responses.
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Affiliation(s)
- Marylin Desjardins
- Division of Allergy and Immunology, Department of Paediatrics, McGill University Health Centre, Montreal, QC, Canada
- Meakins-Christie Laboratories of the Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Swadhinya Arjunaraja
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of Health Sciences, Bethesda, MD, United States
| | - Jeffrey R. Stinson
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of Health Sciences, Bethesda, MD, United States
| | - Batsukh Dorjbal
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of Health Sciences, Bethesda, MD, United States
| | - Janani Sundaresan
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of Health Sciences, Bethesda, MD, United States
| | - Julie Niemela
- Department of Laboratory Medicine, NIH Clinical Center, Bethesda, MD, United States
| | - Mark Raffeld
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Helen F. Matthews
- Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Angela Wang
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
- Clinical Research Directorate/Clinical Monitoring Research Program, Leidos Biomedical Research, Inc., National Cancer Institute at Frederick, Frederick, MD, United States
| | - Pamela Angelus
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
- Clinical Research Directorate/Clinical Monitoring Research Program, Leidos Biomedical Research, Inc., National Cancer Institute at Frederick, Frederick, MD, United States
| | - Helen C. Su
- Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, United States
| | - Bruce D. Mazer
- Division of Allergy and Immunology, Department of Paediatrics, McGill University Health Centre, Montreal, QC, Canada
- Meakins-Christie Laboratories of the Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Andrew L. Snow
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of Health Sciences, Bethesda, MD, United States
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IL-21 and anti-CD40 restore Bcl-2 family protein imbalance in vitro in low-survival CD27 + B cells from CVID patients. Cell Death Dis 2018; 9:1156. [PMID: 30464201 PMCID: PMC6249202 DOI: 10.1038/s41419-018-1191-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/24/2018] [Accepted: 10/29/2018] [Indexed: 12/11/2022]
Abstract
Common variable immunodeficiency (CVID) is characterized by an abnormal B cell differentiation to memory and antibody-secreting B cells. The defective functionality of CVID patients’ B cells could be the consequence of alterations in apoptosis regulation. We studied the balance of Bcl-2 family anti-/pro-apoptotic proteins to identify molecular mechanisms that could underlie B cell survival defects in CVID. We used flow cytometry to investigate Bcl-2, Bcl-XL, Bax, and Bim expression in B cells ex vivo and after anti-CD40 or anti-BCR activation with or without IL-21, besides to spontaneous and stimulation-induced Caspase-3 activation and viable/apoptotic B cell subpopulations. We found increased basal levels of Bax and Bim in CVID B cells that correlated with low viability and high Caspase-3 activation only in CD27+ B cells, particularly in a subgroup of apoptosis-prone CVID (AP-CVID) patients with low peripheral B cell counts and high autoimmunity prevalence (mostly cytopenias). We detected a broad B cell defect in CVID regarding Bcl-2 and Bcl-XL induction, irrespective of the stimulus used. Therefore, peripheral CVID memory B cells are prompted to die from apoptosis due to a constitutive Bcl-2 family protein imbalance and defective protection from activation-induced apoptosis. Interestingly, anti-CD40 and IL-21 induced normal and even higher levels of Bcl-XL, respectively, in CD27+ B cells from AP-CVID, which was accompanied by cell viability increase. Thus low-survival memory B cells from AP-CVID can overcome their cell death regulation defects through pro-survival signals provided by T cells. In conclusion, we identify apoptosis regulation defects as disease-contributing factors in CVID. B cell counts and case history of cytopenias might be useful to predict positive responses to therapeutic approaches targeting T-dependent signaling pathways.
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Turpin D, Furudoi A, Parrens M, Blanco P, Viallard JF, Duluc D. Increase of follicular helper T cells skewed toward a Th1 profile in CVID patients with non-infectious clinical complications. Clin Immunol 2018; 197:130-138. [PMID: 30219667 DOI: 10.1016/j.clim.2018.09.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 08/02/2018] [Accepted: 09/11/2018] [Indexed: 12/18/2022]
Abstract
Common variable immunodeficiency (CVID) is characterized by low levels of circulating immunoglobulins and defects in B cell maturation leading to an increased susceptibility to infections. Some patients develop complications such as autoimmune diseases, enteropathy, and lymphoproliferation, resulting in higher morbidity and mortality. Follicular helper T (Tfh) cells are specialized in helping B cell differentiation into Ig-producing cells. Three subsets have been described, namely non B-cell helper Tfh1 and the two B-helper cell subsets Tfh2 and Tfh17. We determined that circulating Tfh cells were elevated in CVID patients and skewed toward a Tfh1 profile. Interestingly, elevated levels of Tfh1 cells were significant only in patients harboring non-infectious complications regardless of the type of complication and inversely correlated with switched memory B cells. Moreover, CXCR3+ cells are increased in splenic CVID germinal centers. Our observations suggest that the altered balance in Tfh subsets in CVID is linked to a more severe disease.
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Affiliation(s)
- Delphine Turpin
- ImmunoConcEpT, CNRS-UMR 5164, Université de Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux, France; Centre Hospitalier Universitaire de Bordeaux, Service d'immunologie et immunogénétique, Place Amélie Raba Léon, 33076 Bordeaux, France
| | - Adeline Furudoi
- Centre Hospitalier Universitaire de Bordeaux, Service de Pathologie, Hôpital du Haut-Lévêque, Groupe Sud CHU de Bordeaux, Avenue de Magellan, 33604 Pessac, France
| | - Marie Parrens
- Centre Hospitalier Universitaire de Bordeaux, Service de Pathologie, Hôpital du Haut-Lévêque, Groupe Sud CHU de Bordeaux, Avenue de Magellan, 33604 Pessac, France
| | - Patrick Blanco
- ImmunoConcEpT, CNRS-UMR 5164, Université de Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux, France; Centre Hospitalier Universitaire de Bordeaux, Service d'immunologie et immunogénétique, Place Amélie Raba Léon, 33076 Bordeaux, France; Centre Hospitalier Universitaire de Bordeaux, Service de médecine interne, Hôpital du Haut-Lévêque, avenue Magellan, 33604 Pessac, France
| | - Jean-François Viallard
- Centre Hospitalier Universitaire de Bordeaux, Service de médecine interne, Hôpital du Haut-Lévêque, avenue Magellan, 33604 Pessac, France
| | - Dorothée Duluc
- ImmunoConcEpT, CNRS-UMR 5164, Université de Bordeaux, 146 rue Léo Saignat, 33076 Bordeaux, France.
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