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Ferjeni Z, Raouia F, Abida O, Penha-Gonçalves C, Masmoudi H. Association of IGHM polymorphisms with susceptibility to type 1 diabetes. Immunol Res 2022; 70:325-330. [PMID: 35048256 DOI: 10.1007/s12026-021-09252-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 11/04/2021] [Indexed: 01/15/2023]
Abstract
Differentiation of B lymphocytes is accompanied by a regulated switch in the expression pattern and stability of surface and secretory immunoglobulins (Igs). Several lines of evidence show that autoimmune responses evolving in much autoimmune pathologies were associated with a high level of humoral Ig, but their pathogenic role remains elusive. The aim of this study was to test the hypothesis that variants at the immunoglobulin heavy-chain IGH locus are genetic determinants to T1D susceptibility. Here, we tested the genetic association of the variants of the immunoglobulin heavy-chain IGH locus as a genetic determinant to T1D susceptibility. A total of 255 subjects from 59 Tunisian families were genotyped for 15 SNPs mapping in 4 regions in IGH locus. We found that rs1950942, rs2180790, rs1808152, and rs1956596 of IGHM and rs2516751 variant located in the IGHA1/IGHG2 region were significantly associated with a risk for T1D p = 7E-3; p = 0.03; p = 0.02; p = 0.043; and p = 3.65E-5, respectively. The TATGG haplotype derived from LD across three SNPs from IGHM gene and two SNPs from IGHD gene was significantly over-transmitted from parents to affect offspring. Our results suggest that genetic variants at the IGH locus are associated with T1D susceptibility. These variations may predispose to IgG AutoAbs production against pancreatic antigens and AutoAbs multi-reactivity, leading to T1D development.
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Affiliation(s)
- Zouidi Ferjeni
- Biology Department, Faculty of Arts and Sciences of Muhayil Aseer, King Khalid University, Abha, Saudi Arabia.
- Immunology Department, Habib Bourguiba Hospital, University of Sfax, Sfax, Tunisia.
| | - Fakhfakh Raouia
- Immunology Department, Habib Bourguiba Hospital, University of Sfax, Sfax, Tunisia
| | - O Abida
- Immunology Department, Habib Bourguiba Hospital, University of Sfax, Sfax, Tunisia
| | | | - H Masmoudi
- Immunology Department, Habib Bourguiba Hospital, University of Sfax, Sfax, Tunisia
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2
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Shi X, Shao F, Li Z, Kang L, Liu J, Kissler S, Zhou Z, Jia L, Zheng P. Regulation of B cell homeostasis by Ptpn22 contributes to type 1 diabetes in NOD mice. Endocrine 2020; 67:535-543. [PMID: 31732921 DOI: 10.1007/s12020-019-02120-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Accepted: 10/16/2019] [Indexed: 01/12/2023]
Abstract
PURPOSE A coding variant in PTPN22 (C1858T) is one of the most important genetic risk factors in type 1 diabetes (T1D). The role of the PTPN22 risk allele in B cells is still incompletely understood and has not been investigated directly in T1D. This study aimed to explore the role of PTPN22 in the homeostasis of B cells and its influence in T1D. METHODS Wild-type (WT) and Ptpn22 inducible knockdown (KD) NOD mice were treated with 200 μg/ml doxycycline at the age of 10 weeks for 1-2 months. B cell compositions in the bone marrow, peritoneal cavity and spleen were examined. The pathogenicity of Ptpn22 KD B cells was explored by adoptive cell transfer. RESULTS Ptpn22 silencing increased the frequency of recirculating mature B cells in the bone marrow, decreased the frequency of B-1a cells in the peritoneal cavity and suppressed the formation of marginal zone B cells and plasma cells in the spleen. Changes in the composition of the peripheral B cell compartment caused by altered cell proliferation while rates of apoptosis were not affected. Significantly, co-transfer of Ptpn22 KD B cells with NY8.3 diabetogenic T cells diminished the frequency of diabetes in recipient NOD.scid mice compared with co-transfer of WT B cells. CONCLUSIONS Our study constitutes the first functional study of Ptpn22 in B cells in NOD mice. Our findings suggest that Ptpn22 variation contributes to T1D by modifying the B cell compartment and support a gain-of-function for the PTPN22 disease variant.
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Affiliation(s)
- Xiajie Shi
- Department of Metabolism & Endocrinology, The Second Xiangya Hospital, Key Laboratory of Diabetes Immunology, Central South University, Ministry of Education, National Clinical Research Center for Metabolic Diseases, Changsha, Hunan, 410011, China
| | - Feng Shao
- Department of Metabolism & Endocrinology, The Second Xiangya Hospital, Key Laboratory of Diabetes Immunology, Central South University, Ministry of Education, National Clinical Research Center for Metabolic Diseases, Changsha, Hunan, 410011, China
| | - Zhixia Li
- Department of Metabolism & Endocrinology, The Second Xiangya Hospital, Key Laboratory of Diabetes Immunology, Central South University, Ministry of Education, National Clinical Research Center for Metabolic Diseases, Changsha, Hunan, 410011, China
| | - Lin Kang
- Department of Endocrinology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, China
| | - Junbin Liu
- Department of Metabolism & Endocrinology, The Second Xiangya Hospital, Key Laboratory of Diabetes Immunology, Central South University, Ministry of Education, National Clinical Research Center for Metabolic Diseases, Changsha, Hunan, 410011, China
| | - Stephan Kissler
- Section for Immunobiology, Joslin Diabetes Center, Harvard Medical School, Boston, MA, USA
| | - Zhiguang Zhou
- Department of Metabolism & Endocrinology, The Second Xiangya Hospital, Key Laboratory of Diabetes Immunology, Central South University, Ministry of Education, National Clinical Research Center for Metabolic Diseases, Changsha, Hunan, 410011, China.
| | - Lijing Jia
- Department of Endocrinology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, China.
| | - Peilin Zheng
- Department of Metabolism & Endocrinology, The Second Xiangya Hospital, Key Laboratory of Diabetes Immunology, Central South University, Ministry of Education, National Clinical Research Center for Metabolic Diseases, Changsha, Hunan, 410011, China.
- Department of Endocrinology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, 518020, China.
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3
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Wilson CS, Spaeth JM, Karp J, Stocks BT, Hoopes EM, Stein RW, Moore DJ. B lymphocytes protect islet β cells in diabetes prone NOD mice treated with imatinib. JCI Insight 2019; 5:125317. [PMID: 30964447 PMCID: PMC6538336 DOI: 10.1172/jci.insight.125317] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 04/02/2019] [Indexed: 01/10/2023] Open
Abstract
Imatinib (Gleevec) reverses type 1 diabetes (T1D) in NOD mice and is currently in clinical trials in individuals with recent-onset disease. While research has demonstrated that imatinib protects islet β cells from the harmful effects of ER stress, the role the immune system plays in its reversal of T1D has been less well understood, and specific cellular immune targets have not been identified. In this study, we demonstrate that B lymphocytes, an immune subset that normally drives diabetes pathology, are unexpectedly required for reversal of hyperglycemia in NOD mice treated with imatinib. In the presence of B lymphocytes, reversal was linked to an increase in serum insulin concentration, but not an increase in islet β cell mass or proliferation. However, improved β cell function was reflected by a partial recovery of MafA transcription factor expression, a sensitive marker of islet β cell stress that is important to adult β cell function. Imatinib treatment was found to increase the antioxidant capacity of B lymphocytes, improving reactive oxygen species (ROS) handling in NOD islets. This study reveals a novel mechanism through which imatinib enables B lymphocytes to orchestrate functional recovery of T1D β cells.
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Affiliation(s)
- Christopher S. Wilson
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Jason M. Spaeth
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Jay Karp
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Blair T. Stocks
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Emilee M. Hoopes
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Roland W. Stein
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Daniel J. Moore
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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4
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Wilson CS, Chhabra P, Marshall AF, Morr CV, Stocks BT, Hoopes EM, Bonami RH, Poffenberger G, Brayman KL, Moore DJ. Healthy Donor Polyclonal IgMs Diminish B-Lymphocyte Autoreactivity, Enhance Regulatory T-Cell Generation, and Reverse Type 1 Diabetes in NOD Mice. Diabetes 2018; 67:2349-2360. [PMID: 30131391 PMCID: PMC6198348 DOI: 10.2337/db18-0456] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Accepted: 08/12/2018] [Indexed: 02/05/2023]
Abstract
Autoimmune diseases such as type 1 diabetes (T1D) arise from unrestrained activation of effector lymphocytes that destroy target tissues. Many efforts have been made to eliminate these effector lymphocytes, but none has produced a long-term cure. An alternative to depletion therapy is to enhance endogenous immune regulation. Among these endogenous alternatives, naturally occurring Igs have been applied for inflammatory disorders but have lacked potency in antigen-specific autoimmunity. We hypothesized that naturally occurring polyclonal IgMs, which represent the majority of circulating, noninduced antibodies but are present only in low levels in therapeutic Ig preparations, possess the most potent capacity to restore immune homeostasis. Treatment of diabetes-prone NOD mice with purified IgM isolated from Swiss Webster (SW) mice (nIgMSW) reversed new-onset diabetes, eliminated autoreactive B lymphocytes, and enhanced regulatory T-cell (Treg) numbers both centrally and peripherally. Conversely, IgM from prediabetic NOD mice could not restore this endogenous regulation, which represents an unrecognized component of T1D pathogenesis. Of note, IgM derived from healthy human donors was similarly able to expand human CD4 Tregs in humanized mice and produced permanent diabetes protection in treated NOD mice. Overall, these studies demonstrate that a potent, endogenous regulatory mechanism, nIgM, is a promising option for reversing autoimmune T1D in humans.
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Affiliation(s)
- Christopher S Wilson
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Preeti Chhabra
- Department of Surgery, University of Virginia, Charlottesville, VA
| | - Andrew F Marshall
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, TN
| | - Caleigh V Morr
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, TN
| | - Blair T Stocks
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Emilee M Hoopes
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, TN
| | - Rachel H Bonami
- Department of Medicine, Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, TN
| | - Greg Poffenberger
- Department of Medicine, Division of Endocrinology, Vanderbilt University Medical Center, Nashville, TN
| | | | - Daniel J Moore
- Department of Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, TN
- Department of Pediatrics, Ian Burr Division of Endocrinology and Diabetes, Vanderbilt University Medical Center, Nashville, TN
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5
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Rolim I, Duarte N, Barata G, Costa J, Gardete-Correia L, Boavida J, Duarte R, Raposo J, Peerally Z, Catarino M, Penha-Gonçalves C. Immunoglobulin M gene association with autoantibody reactivity and type 1 diabetes. Immunogenetics 2017; 69:429-437. [PMID: 28534223 PMCID: PMC5486809 DOI: 10.1007/s00251-017-0999-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 05/04/2017] [Indexed: 01/07/2023]
Abstract
Several lines of evidence show that autoimmune responses evolving in type 1 diabetes (T1D) patients include the generation of multi-reactive autoantibody (AutoAb) repertoires, but their role in T1D pathogenesis remains elusive. We tested the hypothesis that variants at the immunoglobulin heavy chain (IGH) locus are genetic determinants of AutoAbs against pancreatic antigens and contribute to T1D susceptibility. With this aim, two independent study designs were used: a case-control study and a family-based cohort comprising a total of 240 T1D patients, 172 first-degree relatives (mother and/or father), and 130 unrelated healthy controls living in Portugal. We found that three SNPs in the IGH locus show suggestive association with T1D with the highest nominal association at rs1950942 (in the IGHM-IGHJ gene region) in both the case-control study (P = 9.35E-03) and the family-based cohort (P = 3.08E-03). These SNPs were also associated with IgG AutoAbs against pancreatic antigens and with AutoAb multi-reactivity in T1D patients. Notably, we found that the SNP with the highest association with T1D susceptibility and IgG autoantibody reactivity (rs1950942) was also associated with anti-GAD IgM reactivity in T1D patients (P = 5.98E-03) and in non-affected parents (P = 4.17E-03). This finding implies that IGH association with autoreactive IgM is detectable irrespective of disease status.These results suggest that genetic variants at the IgM gene region of the IGH locus contribute to antibody autoreactivity and are associated with T1D. We propose that the control of autoantibody generation by IGH polymorphisms is a component of the complex architecture of T1D genetic susceptibility.
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Affiliation(s)
- Inês Rolim
- Instituto Gulbenkian de Ciência, Apartado 14, P-2781-901, Oeiras, Portugal.,Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Nádia Duarte
- Instituto Gulbenkian de Ciência, Apartado 14, P-2781-901, Oeiras, Portugal
| | - Gabriela Barata
- Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal.,Portuguese Diabetes Association, Education and Research Center, Lisbon, Portugal
| | - João Costa
- Instituto Gulbenkian de Ciência, Apartado 14, P-2781-901, Oeiras, Portugal
| | - Luís Gardete-Correia
- Portuguese Diabetes Association, Education and Research Center, Lisbon, Portugal
| | - José Boavida
- Portuguese Diabetes Association, Education and Research Center, Lisbon, Portugal
| | - Rui Duarte
- Portuguese Diabetes Association, Education and Research Center, Lisbon, Portugal
| | - João Raposo
- Portuguese Diabetes Association, Education and Research Center, Lisbon, Portugal
| | - Zulmira Peerally
- Portuguese Diabetes Association, Education and Research Center, Lisbon, Portugal
| | | | - Carlos Penha-Gonçalves
- Instituto Gulbenkian de Ciência, Apartado 14, P-2781-901, Oeiras, Portugal. .,Portuguese Diabetes Association, Education and Research Center, Lisbon, Portugal.
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6
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Lenartić M, Jelenčić V, Zafirova B, Ožanič M, Marečić V, Jurković S, Sexl V, Šantić M, Wensveen FM, Polić B. NKG2D Promotes B1a Cell Development and Protection against Bacterial Infection. THE JOURNAL OF IMMUNOLOGY 2017; 198:1531-1542. [PMID: 28087665 DOI: 10.4049/jimmunol.1600461] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Accepted: 12/12/2016] [Indexed: 02/06/2023]
Abstract
NKG2D is a potent activating receptor that is expressed on cytotoxic immune cells such as CD8 T and NK cells, where it promotes cytotoxicity after binding stress ligands on infected or transformed cells. On NK cell precursors NKG2D modulates proliferation and maturation. Previously, we observed that NKG2D deficiency affects peripheral B cell numbers. In this study, we show that NKG2D regulates B1a cell development and function. We find that mice deficient for NKG2D have a strong reduction of B1a cell numbers. As a result, NKG2D-deficient mice produce significantly less Ag-specific IgM Abs upon immunization with T cell-independent Ags, and they are more susceptible to Gram-negative sepsis. Klrk1-/- B1a cells are also functionally impaired and they fail to provide protection against Francisella novicida upon adoptive transfer. Using mixed bone marrow chimeric mice, we show that the impact of NKG2D deficiency on B1a cell development is cell intrinsic. No changes in homeostatic turnover and homing of B cells were detectable, limiting the effects of NKG2D to modulation of the hematopoietic development of B1a cells. Using conditional ablation, we demonstrate that the effect of NKG2D on B1a cell development occurs at a developmental stage that precedes the common lymphoid progenitor. Our findings reveal an unexpected new role for NKG2D in the regulation of B1a cell development. The protective effects of this activating receptor therefore reach beyond that of cytotoxic cells, stimulating the immune system to fight bacterial infections by promoting development of innate-like B cells.
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Affiliation(s)
- Maja Lenartić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Vedrana Jelenčić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Biljana Zafirova
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia.,Laboratory of Dendritic Cell Immunobiology, Immunology Department, Institute Pasteur, 75015 Paris, France
| | - Mateja Ožanič
- Department of Microbiology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Valentina Marečić
- Department of Microbiology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Slaven Jurković
- Department of Medical Physics, University Hospital Rijeka, 51000 Rijeka, Croatia
| | - Veronika Sexl
- Department of Biomedical Sciences, Institute of Pharmacology and Toxicology, University of Veterinary Medicine, 1210 Vienna, Austria; and
| | - Marina Šantić
- Department of Microbiology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia
| | - Felix M Wensveen
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia.,Department of Experimental Immunology, Academic Medical Center, 1105 Amsterdam, the Netherlands
| | - Bojan Polić
- Department of Histology and Embryology, Faculty of Medicine, University of Rijeka, 51000 Rijeka, Croatia;
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7
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Packard TA, Smith MJ, Conrad FJ, Johnson SA, Getahun A, Lindsay RS, Hinman RM, Friedman RS, Thomas JW, Cambier JC. B Cell Receptor Affinity for Insulin Dictates Autoantigen Acquisition and B Cell Functionality in Autoimmune Diabetes. J Clin Med 2016; 5:E98. [PMID: 27834793 PMCID: PMC5126795 DOI: 10.3390/jcm5110098] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 10/24/2016] [Accepted: 11/03/2016] [Indexed: 11/30/2022] Open
Abstract
B cells have been strongly implicated in the development of human type 1 diabetes and are required for disease in the NOD mouse model. These functions are dependent on B cell antigen receptor (BCR) specificity and expression of MHC, implicating linked autoantigen recognition and presentation to effector T cells. BCR-antigen affinity requirements for participation in disease are unclear. We hypothesized that BCR affinity for the autoantigen insulin differentially affects lymphocyte functionality, including tolerance modality and the ability to acquire and become activated in the diabetogenic environment. Using combined transgenic and retrogenic heavy and light chain to create multiple insulin-binding BCRs, we demonstrate that affinity for insulin is a critical determinant of the function of these autoreactive cells. We show that both BCR affinity for insulin and genetic background affect tolerance induction in immature B cells. We also find new evidence that may explain the enigmatic ability of B cells expressing 125 anti-insulin BCR to support development of TID in NOD mice despite a reported affinity beneath requirements for binding insulin at in vivo concentrations. We report that when expressed as an antigen receptor the affinity of 125 is much higher than determined by measurements of the soluble form. Finally, we show that in vivo acquisition of insulin requires both sufficient BCR affinity and permissive host/tissue environment. We propose that a confluence of BCR affinity, pancreas environment, and B cell tolerance-regulating genes in the NOD animal allows acquisition of insulin and autoimmunity.
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Affiliation(s)
- Thomas A Packard
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA.
| | - Mia J Smith
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA.
| | - Francis J Conrad
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA.
| | - Sara A Johnson
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA.
| | - Andrew Getahun
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA.
| | - Robin S Lindsay
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA.
| | - Rochelle M Hinman
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA.
| | - Rachel S Friedman
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA.
| | - James W Thomas
- Division of Rheumatology and Immunology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
| | - John C Cambier
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
- Department of Biomedical Research, National Jewish Health, Denver, CO 80206, USA.
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO 80523, USA.
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8
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Alvares-Saraiva AM, Novo MCT, de Oliveira VC, Maricato JT, Lopes JD, Popi AF, Mariano M. B-1 cells produce insulin and abrogate experimental streptozotocin-induced diabetes. Eur J Immunol 2015; 45:1452-61. [PMID: 25688546 DOI: 10.1002/eji.201445409] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 01/26/2015] [Accepted: 02/12/2015] [Indexed: 01/28/2023]
Abstract
The participation of B-1 cells in a murine model of spontaneous diabetes has been recently reported. Here, we describe the role of B-1 cells in streptozotocin (STZ) induced diabetes in mice. We demonstrated that XID (B-1 cell-deficient) mice are more susceptible to STZ treatment than WT mice, as evidenced by their higher blood glucose level in response to STZ. Unexpectedly, the XID mice that were i.p. transferred with purified B-1 cells, either before or after the STZ treatment, did not develop diabetes. These cell transfers provided long-lasting protection for the XID mice against STZ-induced diabetes, suggesting that B-1 cells play an important role in the experimental diabetes pathobiology. We also showed that B-1 cell culture supernatants were able to regulate the blood glucose level of the diabetic XID mice, and we identified insulin-producing cells when B-1 cells were differentiated in B-1 cell-derived phagocyte in vitro. These findings provide a novel role for B-1 cells in metabolic processes, presenting a new mechanism to explain the pathogenesis of diabetes and a possible therapeutical target.
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Affiliation(s)
- Anuska M Alvares-Saraiva
- Disciplina de Imunologia, Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo-UNIFESP, São Paulo, Brasil.,Programa de Pós Graduação em Patologia Ambiental e Experimental, Universidade Paulista-UNIP, São Paulo, Brasil
| | - Marília C T Novo
- Disciplina de Imunologia, Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo-UNIFESP, São Paulo, Brasil
| | - Vivian Cristina de Oliveira
- Disciplina de Imunologia, Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo-UNIFESP, São Paulo, Brasil
| | - Juliana T Maricato
- Disciplina de Imunologia, Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo-UNIFESP, São Paulo, Brasil
| | - José Daniel Lopes
- Disciplina de Imunologia, Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo-UNIFESP, São Paulo, Brasil
| | - Ana Flavia Popi
- Disciplina de Imunologia, Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo-UNIFESP, São Paulo, Brasil
| | - Mario Mariano
- Disciplina de Imunologia, Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina, Universidade Federal de São Paulo-UNIFESP, São Paulo, Brasil.,Programa de Pós Graduação em Patologia Ambiental e Experimental, Universidade Paulista-UNIP, São Paulo, Brasil
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9
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Gianchecchi E, Crinò A, Giorda E, Luciano R, Perri V, Russo AL, Cappa M, Rosado MM, Fierabracci A. Altered B cell homeostasis and toll-like receptor 9-driven response in type 1 diabetes carriers of the C1858T PTPN22 allelic variant: implications in the disease pathogenesis. PLoS One 2014; 9:e110755. [PMID: 25333705 PMCID: PMC4205012 DOI: 10.1371/journal.pone.0110755] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 09/18/2014] [Indexed: 01/10/2023] Open
Abstract
Type 1 diabetes is an autoimmune disease caused by the destruction of pancreatic beta cells by autoreactive T cells. Among the genetic variants associated with type 1 diabetes, the C1858T (Lyp) polymorphism of the protein tyrosine phosphatase non-receptor type 22 (PTPN22) gene alters the function of T cells but also of B cells in innate and adaptive immunity. The Lyp variant was shown to diminish interferon production and responses upon Toll-like receptor stimulation in macrophages and dendritic cells, possibly leading to uncontrolled infections as triggers of the diabetogenic process. The aim of this study was to unravel the yet uncharacterized effects that the variant could exert on the immune and autoimmune responses, particularly regarding the B cell phenotype, in the peripheral blood lymphocytes of diabetic patients and healthy controls in basal conditions and after unmethylated bacterial DNA CpG stimulation. The presence of the Lyp variant resulted in a significant increase in the percentage of transitional B cells in C/T carriers patients and controls compared to C/C patients and controls, in C/T carrier patients compared to C/C controls and in C/T carrier patients compared to C/C patients. A significant reduction in the memory B cells was also observed in the presence of the risk variant. After four days of CpG stimulation, there was a significant increase in the abundance of IgM+ memory B cells in C/T carrier diabetics than in C/C subjects and in the groups of C/T carrier individuals than in C/C individuals. IgM- memory B cells tended to differentiate more precociously into plasma cells than IgM+ memory B cells in heterozygous C/T subjects compared to the C/C subjects. The increased Toll-like receptor response that led to expanded T cell-independent IgM+ memory B cells should be further investigated to determine the putative contribution of innate immune responses in the disease pathogenesis.
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Affiliation(s)
- Elena Gianchecchi
- Autoimmunity Laboratory, Immunology and Pharmacotherapy Area, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Antonino Crinò
- Division of Endocrinology, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Ezio Giorda
- B cell Development Laboratory, Immunology and Pharmacotherapy Area, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Rosa Luciano
- Research Laboratories, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Valentina Perri
- Autoimmunity Laboratory, Immunology and Pharmacotherapy Area, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Anna Lo Russo
- Autoimmunity Laboratory, Immunology and Pharmacotherapy Area, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Marco Cappa
- Division of Endocrinology, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - M. Manuela Rosado
- B cell Development Laboratory, Immunology and Pharmacotherapy Area, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Alessandra Fierabracci
- Autoimmunity Laboratory, Immunology and Pharmacotherapy Area, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
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10
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Gjurich BN, Taghavie-Moghadam PL, Ley K, Galkina EV. L-selectin deficiency decreases aortic B1a and Breg subsets and promotes atherosclerosis. Thromb Haemost 2014; 112:803-11. [PMID: 24989887 DOI: 10.1160/th13-10-0865] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 04/29/2014] [Indexed: 12/18/2022]
Abstract
There is a significant recruitment of leucocytes into aortas during atherogenesis. L-selectin regulates leucocyte migration into secondary lymphoid and peripheral tissues and was proposed to play a role in leucocyte homing into aortas. Here, we determine the role of L-selectin in atherosclerosis. L-selectin-deficient Apoe-/- (Sell-/-Apoe-/-) mice had a 74% increase in plaque burden compared to Apoe-/- mice fed a chow diet for 50 weeks. Elevated atherosclerosis was accompanied by increased aortic leucocyte content, but a 50% reduction in aortic B cells despite elevated B cell counts in the blood. Follicular B cells represented 65%, whereas B1a and regulatory B cells (Breg) comprised 5% of aortic B cells. B1a and Breg cell subsets were reduced in Sell-/-Apoe-/- aortas with accompanied two-fold decrease in aortic T15 antibody and 1.2-fold decrease of interleukin-10 (IL-10) levels. L-selectin was required for B1 cell homing to the atherosclerotic aorta, as demonstrated by a 1.5-fold decrease in the migration of Sell-/-Apoe-/- vs Apoe-/- cells. Notably, we found a 1.6-fold increase in CD68hi macrophages in Sell-/-Apoe-/- compared to Apoe-/- aortas, despite comparable blood monocyte numbers and L-selectin-dependent aortic homing. L-selectin had no effect on neutrophil migration into aorta, but led to elevated blood neutrophil numbers, suggesting a potential involvement of neutrophils in atherogenesis of Sell-/-Apoe-/- mice. Thus, L-selectin deficiency increases peripheral blood neutrophil and lymphocyte numbers, decreases aortic B1a and Breg populations, T15 antibody and IL-10 levels, and increases aortic macrophage content of Sell-/-Apoe-/- mice. Altogether, these data provide evidence for an overall atheroprotective role of L-selectin.
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Affiliation(s)
| | | | | | - Elena V Galkina
- Elena V. Galkina, PhD, Associate Professor, Dept. Microbiology and Molecular Cell Biology, Eastern Virginia Medical School, 700 West Olney Road, Norfolk, VA 23507-1696, USA, Tel.: +1 757 446 5019, Fax: +1 757 624 2255, E-mail:
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