151
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Leng Y, Romero R, Xu Y, Galaz J, Slutsky R, Arenas-Hernandez M, Garcia-Flores V, Motomura K, Hassan SS, Reboldi A, Gomez-Lopez N. Are B cells altered in the decidua of women with preterm or term labor? Am J Reprod Immunol 2019; 81:e13102. [PMID: 30768818 DOI: 10.1111/aji.13102] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/26/2019] [Accepted: 02/06/2019] [Indexed: 12/11/2022] Open
Abstract
PROBLEM The immunophenotype of B cells at the maternal-fetal interface (decidua) in labor at term and preterm labor is poorly understood. METHOD OF STUDY Decidual tissues were obtained from women with preterm or term labor and from non-labor gestational age-matched controls. Immunophenotyping of decidual B cells was performed using multicolor flow cytometry. RESULTS (a) In the absence of acute or chronic chorioamnionitis, total B cells were more abundant in the decidua parietalis of women who delivered preterm than in those who delivered at term, regardless of the presence of labor; (b) decidual transitional and naïve B cells were the most abundant B-cell subsets; (c) decidual B1 B cells were increased in women with either labor at term or preterm labor and chronic chorioamnionitis compared to those without this placental lesion; (d) decidual transitional B cells were reduced in women with preterm labor compared to those without labor; (e) naïve, class-switched, and non-class-switched B cells in the decidual tissues underwent mild alterations with the process of preterm labor; (f) decidual plasmablasts seemed to increase in women with either labor at term or preterm labor with chronic chorioamnionitis; and (g) decidual B cells expressed high levels of interleukin (IL)-12, IL-6, and/or IL-35. CONCLUSION Total B cells are not increased with the presence of preterm or term labor; yet, specific subsets (B1 and plasmablasts) undergo alterations in women with chronic chorioamnionitis. Therefore, B cells are solely implicated in the pathological process of preterm labor in a subset of women with chronic inflammation of the placenta. These findings provide insight into the immunology of the maternal-fetal interface in preterm and term labor.
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Affiliation(s)
- Yaozhu Leng
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan
| | - Roberto Romero
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan.,Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, Michigan.,Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan
| | - Yi Xu
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan
| | - Jose Galaz
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rebecca Slutsky
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan
| | - Marcia Arenas-Hernandez
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan
| | - Valeria Garcia-Flores
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan
| | - Kenichiro Motomura
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan
| | - Sonia S Hassan
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan.,Department of Physiology, Wayne State University School of Medicine, Detroit, Michigan
| | - Andrea Reboldi
- Department of Pathology, University of Massachusetts Medical School, Worcester, Massachusetts
| | - Nardhy Gomez-Lopez
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services, Bethesda, Maryland, and Detroit, Michigan.,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan.,C.S. Mott Center for Human Growth and Development, Wayne State University, Detroit, Michigan.,Department of Immunology, Microbiology and Biochemistry, Wayne State University School of Medicine, Detroit, Michigan
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152
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Berkani N, Joly P, Golinski ML, Colliou N, Lim A, Larbi A, Riou G, Caillot F, Bernard P, Bedane C, Delaporte E, Chaby G, Dompmartin A, Hertl M, Calbo S, Musette P. B-cell depletion induces a shift in self antigen specific B-cell repertoire and cytokine pattern in patients with bullous pemphigoid. Sci Rep 2019; 9:3525. [PMID: 30837635 PMCID: PMC6401188 DOI: 10.1038/s41598-019-40203-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 02/04/2019] [Indexed: 11/08/2022] Open
Abstract
Bullous Pemphigoid is the most common auto-immune bullous skin disease. It is characterized by the production of auto-antibodies directed against 2 proteins of the hemi-desmosome (BP180 and BP230). We assessed the efficacy and mechanisms of action of rituximab, an anti-CD20 monoclonal antibody, in 17 patients with severe and relapsing type of bullous pemphigoid. The phenotype, cytokine gene expression, and rearrangement of BP180-specific B-cell receptor genes were performed over 2 years following treatment. At the end of the study, 5 patients had died, 3 had withdrawn from the study, and 9 patients were in complete remission. The one- and two-year relapse rates were 44.1% (95% Confidence Interval (CI): 21.0-76.0%) and 66.5%, (95% CI: 38.4-91.4%), respectively. Phenotypic analyses confirmed dramatic B-cell depletion, which lasted for 9 to 12 months. The ELISA values of serum anti-BP180 antibodies and the frequency of BP180-specific circulating B cells decreased dramatically following treatment, which paralleled the improvement of skin lesions. During B-cell reconstitution, a polyclonal IgM repertoire appeared and a shift in the rearrangement of the B-cell receptor genes of BP180-specific circulating B cells was observed. Concurrently, we observed a decrease of IL-15, IL-6 and TNFα expressing BP180-specific B cells, and the emergence of IL-10 and IL-1RA-expressing BP180-specific IgM+ B cells in patients in complete remission off therapy, suggesting the functional plasticity of BP180-specific auto-immune B cells after rituximab treatment.
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Affiliation(s)
| | - Pascal Joly
- Normandie University, UNIROUEN, INSERM U1234, Rouen, France
- Normandie University, UNIROUEN, Rouen University Hospital, Department of Dermatology, French reference center for autoimmune bullous diseases, F76000, Rouen, France
| | - Marie-Laure Golinski
- Normandie University, UNIROUEN, INSERM U1234, Rouen, France
- Normandie University, UNIROUEN, Rouen University Hospital, Department of Dermatology, French reference center for autoimmune bullous diseases, F76000, Rouen, France
| | | | - Annick Lim
- Immunoscope plateform, Pasteur Institute, Paris, France
| | - Anis Larbi
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Gaetan Riou
- Normandie University, UNIROUEN, INSERM U1234, Rouen, France
| | | | - Philippe Bernard
- Department of Dermatology, Reims University Hospital, Reims, France
| | - Christophe Bedane
- Department of Dermatology, Limoges University Hospital, Limoges, France
| | | | - Guillaume Chaby
- Department of Dermatology, Amiens University Hospital, Amiens, France
| | - Anne Dompmartin
- Department of Dermatology, Caen University Hospital, Caen, France
| | - Michael Hertl
- Department of Dermatology and Allergology, Philipps University, Marburg, Germany
| | | | - Philippe Musette
- Normandie University, UNIROUEN, Rouen University Hospital, Department of Dermatology, French reference center for autoimmune bullous diseases, F76000, Rouen, France.
- INSERM U976, Saint Louis Hospital, Paris, France.
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153
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Heidt S, Vergunst M, Anholts JDH, Swings GMJS, Gielis EMJ, Groeneweg KE, Witkamp MJ, de Fijter JW, Reinders MEJ, Roelen DL, Eikmans M, Claas FHJ. Presence of intragraft B cells during acute renal allograft rejection is accompanied by changes in peripheral blood B cell subsets. Clin Exp Immunol 2019; 196:403-414. [PMID: 30712266 PMCID: PMC6514375 DOI: 10.1111/cei.13269] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/19/2019] [Indexed: 01/08/2023] Open
Abstract
B cells have various functions, besides being plasma cell precursors. We determined the presence of intragraft B cells at time of acute rejection (AR) and looked for correlates of B cell involvement in peripheral blood. Renal biopsies at time of AR or stable graft function were analysed for the presence of B cells and B cell‐related gene expression, as well as C4d staining. Peripheral blood B cell subset distribution was analysed at various time‐points in patients with AR and controls, alongside serum human leucocyte antigen (HLA) antibodies. AR was accompanied by intragraft CD20+ B cells, as well as elevated CD20 (MS4A1) and CD19 gene expression compared to controls. B cell infiltrates were proportional to T cells, and accompanied by the chemokine pair C‐X‐C motif chemokine ligand 13 (CXCL13)–C‐X‐C motif chemokine receptor 5 (CXCR5) and B cell activating factor (BAFF). Peripheral blood memory B cells were decreased and naive B cells increased at AR, in contrast to controls. While 22% of patients with AR and 5% of controls showed de‐novo donor‐specific antibodies (DSA), all biopsies were C4d‐negative. These results suggest a role for B cells in AR by infiltrating the graft alongside T cells. We hypothesize that the shift in peripheral blood B cell composition is related to the graft infiltration at time of AR.
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Affiliation(s)
- S Heidt
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - M Vergunst
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - J D H Anholts
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - G M J S Swings
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - E M J Gielis
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - K E Groeneweg
- Department of Internal Medicine (Nephrology), Leiden University Medical Center, Leiden, the Netherlands
| | - M J Witkamp
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - J W de Fijter
- Department of Internal Medicine (Nephrology), Leiden University Medical Center, Leiden, the Netherlands
| | - M E J Reinders
- Department of Internal Medicine (Nephrology), Leiden University Medical Center, Leiden, the Netherlands
| | - D L Roelen
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - M Eikmans
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
| | - F H J Claas
- Department of Immunohaematology and Blood Transfusion, Leiden University Medical Center, Leiden, the Netherlands
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154
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Wilkinson MGL, Rosser EC. B Cells as a Therapeutic Target in Paediatric Rheumatic Disease. Front Immunol 2019; 10:214. [PMID: 30837988 PMCID: PMC6382733 DOI: 10.3389/fimmu.2019.00214] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 01/24/2019] [Indexed: 12/12/2022] Open
Abstract
B cells carry out a central role in the pathogenesis of autoimmune disease. In addition to the production of autoantibodies, B cells can contribute to disease development by presenting autoantigens to autoreactive T cells and by secreting pro-inflammatory cytokines and chemokines which leads to the amplification of the inflammatory response. Targeting both the antibody-dependent and antibody-independent function of B cells in adult rheumatic disease has led to the advent of B cell targeted therapies in clinical practice. To date, whether B cell depletion could also be utilized for the treatment of pediatric disease is relatively under explored. In this review, we will discuss the role of B cells in the pathogenesis of the pediatric rheumatic diseases Juvenile Idiopathic Arthritis (JIA), Juvenile Systemic Lupus Erythematosus (JSLE) and Juvenile Dermatomyositis (JDM). We will also explore the rationale behind the use of B cell-targeted therapies in pediatric rheumatic disease by highlighting new case studies that points to their efficacy in JIA, JSLE, and JDM.
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Affiliation(s)
- Meredyth G Ll Wilkinson
- Infection, Immunity, Inflammation Programme, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.,Arthritis Research UK Centre for Adolescent Rheumatology, University College London, UCLH and GOSH, London, United Kingdom.,NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, United Kingdom
| | - Elizabeth C Rosser
- Infection, Immunity, Inflammation Programme, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.,Arthritis Research UK Centre for Adolescent Rheumatology, University College London, UCLH and GOSH, London, United Kingdom.,NIHR Biomedical Research Centre, Great Ormond Street Hospital, London, United Kingdom
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155
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Inhibition of the IRE-1α/XBP-1 pathway prevents chronic GVHD and preserves the GVL effect in mice. Blood Adv 2019; 2:414-427. [PMID: 29483082 DOI: 10.1182/bloodadvances.2017009068] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 02/02/2018] [Indexed: 01/07/2023] Open
Abstract
Hematopoietic stem cell transplantation (HCT) is a curative procedure for hematological malignancies, but chronic graft-versus-host disease (cGVHD) remains a major complication after allogeneic HCT. Because donor B cells are essential for cGVHD development and B cells are sensitive to endoplasmic reticulum (ER) stress, we hypothesized that the IRE-1α/XBP-1 pathway is required for B-cell activation and function and for the development of cGVHD. To test this hypothesis, we used conditional knock-out mice deficient of XBP-1 specifically in B cells. Recipients transplanted with donor grafts containing XBP-1-deficient B cells displayed reduced cGVHD compared with controls. Reduction of cGVHD correlated with impaired B-cell functions, including reduced production of anti-double-stranded DNA immunoglobulin G antibodies, CD86, Fas, and GL7 surface expression, and impaired T-cell responses, including reduced interferon-γ production and follicular helper T cells. In a bronchiolitis obliterans cGVHD model, recipients of transplants containing XBP-1-deficient B cells demonstrated improved pulmonary function correlated with reduced donor splenic follicular helper T cells and increased B cells compared with those of wild-type control donor grafts. We then tested if XBP-1 blockade via an IRE-1α inhibitor, B-I09, would attenuate cGVHD and preserve the graft-versus-leukemia (GVL) effect. In a cutaneous cGVHD model, we found that prophylactic administration of B-I09 reduced clinical features of cGVHD, which correlated with reductions in donor T-cell and dendritic cell skin infiltrates. Inhibition of the IRE-1α/XBP-1 pathway also preserved the GVL effect against chronic myelogenous leukemia mediated by allogeneic splenocytes. Collectively, the ER stress response mediated by the IRE-1α/XBP-1 axis is required for cGVHD development but dispensable for GVL activity.
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156
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Germar K, Fehres CM, Scherer HU, Uden N, Pollastro S, Yeremenko N, Hansson M, Kerkman PF, Voort EIH, Reed E, Maassen H, Kwakkenbos MJ, Bakker AQ, Klareskog L, Malmström V, Vries N, Toes REM, Lundberg K, Spits H, Baeten DL. Generation and Characterization of Anti–Citrullinated Protein Antibody–Producing B Cell Clones From Rheumatoid Arthritis Patients. Arthritis Rheumatol 2019; 71:340-350. [DOI: 10.1002/art.40739] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 09/25/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Kristine Germar
- Academic Medical CenterUniversity of Amsterdam Amsterdam The Netherlands
| | - Cynthia M. Fehres
- Academic Medical CenterUniversity of Amsterdam Amsterdam The Netherlands
| | | | - Nathalie Uden
- Academic Medical CenterUniversity of Amsterdam Amsterdam The Netherlands
| | - Sabrina Pollastro
- Academic Medical CenterUniversity of Amsterdam Amsterdam The Netherlands
| | - Nataliya Yeremenko
- Academic Medical CenterUniversity of Amsterdam Amsterdam The Netherlands
| | - Monika Hansson
- Karolinska Institutet/Karolinska University Hospital Stockholm Sweden
| | | | | | - Evan Reed
- Karolinska Institutet/Karolinska University Hospital Stockholm Sweden
| | - Hanna Maassen
- Leiden University Medical Center Leiden The Netherlands
| | | | - Arjen Q. Bakker
- AIMM Therapeutics and Academic Medical CenterUniversity of Amsterdam
| | - Lars Klareskog
- Karolinska Institutet/Karolinska University Hospital Stockholm Sweden
| | | | - Niek Vries
- Academic Medical CenterUniversity of Amsterdam Amsterdam The Netherlands
| | | | - Karin Lundberg
- Karolinska Institutet/Karolinska University Hospital Stockholm Sweden
| | - Hergen Spits
- AIMM Therapeutics and Academic Medical CenterUniversity of Amsterdam
| | - Dominique L. Baeten
- Academic Medical CenterUniversity of Amsterdam, and UCB Pharma Brussels Belgium
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157
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Abstract
PURPOSE OF REVIEW B cells have recently emerged as important immune players in solid organ rejection, especially in cardiac allograft vasculopathy (CAV), a chronic form of rejection following heart transplantation. B cells can exert either regulatory or effector functions. This review will provide an update on effector B cells in CAV. RECENT FINDINGS Independent studies reported the abundance of B cells in graft infiltrates during CAV, especially around coronary arteries. Infiltrates comprise CD20+ CD27+ memory B cells together with differentiated CD20-CD138+ plasma cells, which are almost always associated with T cells and macrophages. The structure of some of these infiltrates evokes that of germinal centers, suggesting the generation of tertiary lymphoid organs in the graft. Remarkably, B-cell infiltrates are most often detected in the absence of circulating donor human leukocyte antigen-specific antibodies, strongly suggesting that the two components are unrelated. Characterization of B-cell clones isolated from explanted human cardiac graft infiltrates revealed the prevalence of polyreactive innate, B1-like B cells. Accumulating evidence suggests that these cells act primarily as antigen-presenting cells in situ. Additional effector functions, such as local antibody secretion and pro-inflammatory cytokine production, promoting T-cell polarization, macrophage activation and fibrosis are also considered. SUMMARY Converging observations made through animal and human studies add substantial support for an effector B-cell role in the pathophysiology of CAV. On the basis of these collective findings, a therapeutic strategy targeting B cells could reasonably be envisaged to prevent or treat this complication.
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Affiliation(s)
- Emmanuel Zorn
- Columbia Center for Translational Immunology, New York Presbyterian Hospital, Columbia University Medical Center, New York, New York, USA
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158
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Tavakolpour S, Mahmoudi H, Abedini R, Kamyab Hesari K, Kiani A, Daneshpazhooh M. Frontal fibrosing alopecia: An update on the hypothesis of pathogenesis and treatment. Int J Womens Dermatol 2019; 5:116-123. [PMID: 30997385 PMCID: PMC6451751 DOI: 10.1016/j.ijwd.2018.11.003] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 10/12/2018] [Accepted: 11/07/2018] [Indexed: 01/10/2023] Open
Abstract
Frontal fibrosing alopecia (FFA) is a relatively new scarring alopecia that is considered a variant of lichen planopilaris (LPP) with no recognized promising treatments. In this study, we tried to clarify the underlying signaling pathways and their roles in the pathogenesis and progression of FFA. Because of several differences in clinical manifestations, response to treatments, and pathological findings, these two conditions could be differentiated from each other. Taking into account the already discussed signaling pathways and involved players such as T cells, mast cells, and sebaceous glands, different possible therapeutic options could be suggested. In addition to treatments supported by clinical evidence, such as 5 alpha-reductase inhibitors, topical calcineurin inhibitors, hydroxychloroquine, peroxisome proliferator-activated receptor gamma agonists, and oral retinoid agents, various other treatment strategies and drugs, such as phototherapy, Janus kinase inhibitors, dehydroepiandrosterone, sirolimus, cetirizine, and rituximab, could be suggested to mitigate disease progression. Of course, such lines of treatment need further evaluation in clinical trials.
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Affiliation(s)
- Soheil Tavakolpour
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - HamidReza Mahmoudi
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Robabeh Abedini
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Kambiz Kamyab Hesari
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Amin Kiani
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Daneshpazhooh
- Autoimmune Bullous Diseases Research Center, Tehran University of Medical Sciences, Tehran, Iran
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159
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Zhuang Y, Zhang J, Li Y, Gu H, Zhao J, Sun Y, Wang R, Zhang C, Chen W, Weng J, Qi L, Lu H, Zhang J, Liu Q, He Y, Xu X. B Lymphocytes Are Predictors of Insulin Resistance in Women with Gestational Diabetes Mellitus. Endocr Metab Immune Disord Drug Targets 2019; 19:358-366. [PMID: 30621567 PMCID: PMC7040503 DOI: 10.2174/1871530319666190101130300] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 09/12/2018] [Accepted: 11/16/2018] [Indexed: 12/11/2022]
Abstract
Backgroud: The present study aimed to investigate the association between immune cells and gestational diabetes mellitus (GDM) and identify a reasonable predictor of insulin resistance in women with GDM. OBJECTIVE The clinical and biochemical characteristics of 124 women with GDM and 168 healthy pregnant women were compared. METHODS The percentage of immune cells in the blood of the subjects was analyzed by flow cytometry. Pearson's correlation analysis revealed the correlation between the percentage of B lymphocytes and insulin resistance. A cutoff point was determined for the percentage of B lymphocytes, based on insulin resistance, using receiver operating characteristic (ROC) curves. RESULTS Compared to the healthy pregnant women, the percentages of B lymphocytes and IgA produced by B-cells were significantly different in women with GDM. The percentage of B lymphocytes was positively related to insulin resistance.The number of 14.05% of B lymphocytes was an optimal cutoff point that predicted the insulin resistance in women with GDM. CONCLUSION The percentage of B lymphocytes was positively associated with insulin resistance, and hence, might serve as an appropriate predictor of insulin resistance in women with GDM.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Yinyan He
- Address correspondence to this author at the Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, No. 100, Haining Road, Shanghai 200080, China; Tel: +86-21-63240090-3071; E-mail:
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160
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Ndlovu H, Nono JK, Abdel Aziz N, Nieuwenhuizen NE, Brombacher F. Interleukin-4 Receptor Alpha Expressing B Cells Are Essential to Down-Modulate Host Granulomatous Inflammation During Schistosomasis. Front Immunol 2018; 9:2928. [PMID: 30619289 PMCID: PMC6305417 DOI: 10.3389/fimmu.2018.02928] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 11/29/2018] [Indexed: 01/09/2023] Open
Abstract
Schistosomiasis (bilharzia) is a parasitic helminth disease that can cause severe inflammatory pathology leading to organ damage in humans. Failure of the host to regulate egg-driven granulomatous inflammation causes host morbidity during chronic infection with Schistosoma mansoni. Although the importance of B cells in regulating pathology during chronic infection has been well defined, the specific contribution of IL-4Rα-expressing B cells is still unknown. To address this, we examined B cell-specific IL-4Rα-deficient (mb1creIL-4Rα−/lox) mice in three experimental models of schistosomiasis: high-dose (100 cercariae), low dose (30 cercariae), and a synchronous egg challenge. In the high dose model, we found that mice deficient in IL-4Rα-expressing B cells were more susceptible to acute schistosomiasis than B cell-deficient (μMT) mice, succumbing to infection at the acute stage whereas μMT mice survived until the chronic stage. An S. mansoni egg challenge model demonstrated that deleting IL-4Rα expression specifically on B cells resulted in increased lung granulomatous pathology, suggesting a role for this B cell subset in controlling granulomatous pathology. In agreement with this, a low dose model of schistosomiasis—which mimics the course of clinical chronic disease—demonstrated that depleting IL-4Rα-expressing B cells in mb1creIL-4Rα−/lox mice considerably impaired the host ability to down-modulate granulomatous inflammation in the liver and gut during chronic schistosomiasis. Taken together, our findings indicate that within the B cell compartment, IL-4Rα-expressing B cells in particular down-modulate the deleterious egg-driven tissue granulomatous inflammation to enable host survival during schistosomiasis in mice.
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Affiliation(s)
- Hlumani Ndlovu
- International Center for Genetic Engineering and Biotechnology (ICGEB), Cape Town Component, Cape Town, South Africa.,Division of Immunology, Institute of Infectious Diseases and Molecular Medicine (IIDMM), University of Cape Town, Cape Town, South Africa.,South African Medical Research Council (SAMRC), Immunology of Infectious Disease Research Unit, Cape Town, South Africa.,Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Justin Komguep Nono
- International Center for Genetic Engineering and Biotechnology (ICGEB), Cape Town Component, Cape Town, South Africa.,Division of Immunology, Institute of Infectious Diseases and Molecular Medicine (IIDMM), University of Cape Town, Cape Town, South Africa.,South African Medical Research Council (SAMRC), Immunology of Infectious Disease Research Unit, Cape Town, South Africa.,The Medical Research Centre, Institute of Medical Research and Medicinal Plant Studies (IMPM), Ministry of Scientific Research and Innovation, Yaounde, Cameroon
| | - Nada Abdel Aziz
- International Center for Genetic Engineering and Biotechnology (ICGEB), Cape Town Component, Cape Town, South Africa.,Division of Immunology, Institute of Infectious Diseases and Molecular Medicine (IIDMM), University of Cape Town, Cape Town, South Africa.,South African Medical Research Council (SAMRC), Immunology of Infectious Disease Research Unit, Cape Town, South Africa.,Chemistry Department, Faculty of Science, Cairo University, Cairo, Egypt
| | - Natalie Eva Nieuwenhuizen
- International Center for Genetic Engineering and Biotechnology (ICGEB), Cape Town Component, Cape Town, South Africa.,Division of Immunology, Institute of Infectious Diseases and Molecular Medicine (IIDMM), University of Cape Town, Cape Town, South Africa.,South African Medical Research Council (SAMRC), Immunology of Infectious Disease Research Unit, Cape Town, South Africa
| | - Frank Brombacher
- International Center for Genetic Engineering and Biotechnology (ICGEB), Cape Town Component, Cape Town, South Africa.,Division of Immunology, Institute of Infectious Diseases and Molecular Medicine (IIDMM), University of Cape Town, Cape Town, South Africa.,South African Medical Research Council (SAMRC), Immunology of Infectious Disease Research Unit, Cape Town, South Africa
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161
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Abstract
Autoimmunity is a leading cause of chronic kidney disease and loss of native and transplanted kidneys. Conventional immunosuppressive therapies can be effective but are non-specific, noncurative, and risk serious side effects such as life-threatening infection and cancer. Novel therapies and targeted interventions are urgently needed. In this brief review we explore diverse strategies currently in development and under consideration to interrupt underlying disease mechanisms in immune-mediated renal injury. Because autoantibodies are prominent in diagnosis and pathogenesis in multiple human glomerulopathies, we highlight several promising therapies that interfere with functions of early mediators (IgG and complement) of the effector arm and with an epicenter (the germinal center) for induction of humoral immunity.
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Affiliation(s)
- Mary Helen Foster
- a Department of Medicine , Duke University Medical Center , Durham , NC , USA.,b Medical and Research Services , Durham VA Medical Center , Durham , NC , USA
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162
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163
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Meng Q, Valentini D, Rao M, Dodoo E, Maeurer M. CMV and EBV targets recognized by tumor-infiltrating B lymphocytes in pancreatic cancer and brain tumors. Sci Rep 2018; 8:17079. [PMID: 30459443 PMCID: PMC6244284 DOI: 10.1038/s41598-018-34710-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 10/15/2018] [Indexed: 02/08/2023] Open
Abstract
Targeted antiviral immune responses to the widespread human pathogens cytomegalovirus (CMV) and Epstein-Barr virus (EBV) play a pivotal role in determining immune fitness. We show here for the first time that tumor-infiltrating B cell (TIB)- derived immunoglobulin G (IgG) from patients with pancreatic cancer or glioblastoma have unique anti-CMV/EBV immune recognition patterns compared to serum IgG. There is also great heterogeneity between patients, as well as between serum and TIB-IgG, while some viral targets elicited strongly both T-cell and IgG reactivity in tumor infiltrating T- and B-cells. These observations suggest that the anti-CMV/EBV humoral immune response in situ is highly unique and can be instrumental in developing next-generation immuno-biomarkers in addition to supplementing cellular therapy strategies for personalized cancer therapy targeting CMV or EBV in the tumor microenvironment.
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Affiliation(s)
- Qingda Meng
- Division of Therapeutic Immunology (TIM), Department of Laboratory Medicine (LABMED), Karolinska Institutet, Stockholm, Sweden
| | - Davide Valentini
- Division of Therapeutic Immunology (TIM), Department of Laboratory Medicine (LABMED), Karolinska Institutet, Stockholm, Sweden
- Centre for Allogeneic Stem Cell Transplantation (CAST), Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Martin Rao
- Division of Therapeutic Immunology (TIM), Department of Laboratory Medicine (LABMED), Karolinska Institutet, Stockholm, Sweden
| | - Ernest Dodoo
- Division of Therapeutic Immunology (TIM), Department of Laboratory Medicine (LABMED), Karolinska Institutet, Stockholm, Sweden
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - Markus Maeurer
- Division of Therapeutic Immunology (TIM), Department of Laboratory Medicine (LABMED), Karolinska Institutet, Stockholm, Sweden.
- Centre for Allogeneic Stem Cell Transplantation (CAST), Karolinska University Hospital Huddinge, Stockholm, Sweden.
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164
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Cross-talk between signal transduction and metabolism in B cells. Immunol Lett 2018; 201:1-13. [PMID: 30439477 DOI: 10.1016/j.imlet.2018.11.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 10/31/2018] [Accepted: 11/05/2018] [Indexed: 12/15/2022]
Abstract
Mounting evidence demonstrates that specific metabolic adaptations are needed to support B cell development and differentiation and to enable B cells to thrive in different environments. Mitogen induced activation of intracellular signaling pathways triggers nutrient uptake and metabolic remodeling to meet the cells' current needs. Reciprocally, changes in the metabolic composition of the environment, or in intracellular metabolite levels, can modulate signal transduction and thus shape cell fate and function. In summary, signal transduction and metabolic pathways operate within an integrated network to cooperatively define cellular outcomes.
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165
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Bednarek J, Traxinger B, Brigham D, Roach J, Orlicky D, Wang D, Pelanda R, Mack CL. Cytokine-Producing B Cells Promote Immune-Mediated Bile Duct Injury in Murine Biliary Atresia. Hepatology 2018; 68:1890-1904. [PMID: 29679373 PMCID: PMC6195851 DOI: 10.1002/hep.30051] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 04/02/2018] [Accepted: 04/14/2018] [Indexed: 12/13/2022]
Abstract
Biliary atresia (BA) is a neonatal T cell-mediated, inflammatory, sclerosing cholangiopathy. In the rhesus rotavirus (RRV)-induced neonatal mouse model of BA (murine BA), mice lacking B cells do not develop BA, and the lack of B cells is associated with loss of T-cell and macrophage activation. The aim of this study was to determine the mechanism of B cell-mediated immune activation (antigen presentation versus cytokine production) in murine BA. Normal neonatal B cells in the liver are predominantly at pro-B and pre-B cellular development. However, BA mice exhibit a significant increase in the number and activation status of mature liver B cells. Adoptively transferred B cells into RRV-infected, B cell-deficient mice were able to reinstate T-cell and macrophage infiltration and biliary injury. Nonetheless, neonatal liver B cells were incompetent at antigen presentation to T cells. Moreover, 3-83 immunoglobulin transgenic mice, in which B cells only present an irrelevant antigen, developed BA, indicating a B-cell antigen-independent mechanism. B cells from BA mice produced a variety of innate and adaptive immune cytokines associated with immune activation. In vitro trans-well studies revealed that BA B cells secreted cytokines that activated T cells based on increased expression of T-cell activation marker cluster of differentiation 69. Conclusion: Neonatal liver B cells are highly activated in murine BA and contribute to immune activation through production of numerous cytokines involved in innate and adaptive immunity; this work provides increased knowledge on the capacity of neonatal B cells to contribute to an inflammatory disease through cytokine-mediated mechanisms, and future studies should focus on targeting B cells as a therapeutic intervention in human BA.
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Affiliation(s)
- Joseph Bednarek
- Department of Pediatrics, Section of Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine
| | - Brianna Traxinger
- Department of Pediatrics, Section of Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine
| | - Dania Brigham
- Department of Pediatrics, Section of Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine
| | - Jonathan Roach
- Department of Surgery, University of Colorado School of Medicine
| | - David Orlicky
- Department of Pathology, University of Colorado School of Medicine
| | - Dong Wang
- Department of Pediatrics, Section of Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine
| | - Roberta Pelanda
- Department of Immunology and Microbiology, University of Colorado School of Medicine
| | - Cara L. Mack
- Department of Pediatrics, Section of Gastroenterology, Hepatology and Nutrition, University of Colorado School of Medicine
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166
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Chen X, Sun X, Yang W, Yang B, Zhao X, Chen S, He L, Chen H, Yang C, Xiao L, Chang Z, Guo J, He J, Zhang F, Zheng F, Hu Z, Yang Z, Lou J, Zheng W, Qi H, Xu C, Zhang H, Shan H, Zhou XJ, Wang Q, Shi Y, Lai L, Li Z, Liu W. An autoimmune disease variant of IgG1 modulates B cell activation and differentiation. Science 2018; 362:700-705. [PMID: 30287618 DOI: 10.1126/science.aap9310] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Revised: 04/10/2018] [Accepted: 09/19/2018] [Indexed: 12/11/2022]
Abstract
The maintenance of autoreactive B cells in a quiescent state is crucial for preventing autoimmunity. Here we identify a variant of human immunoglobulin G1 (IgG1) with a Gly396→Arg substitution (hIgG1-G396R), which positively correlates with systemic lupus erythematosus. In induced lupus models, murine homolog Gly390→Arg (G390R) knockin mice generate excessive numbers of plasma cells, leading to a burst of broad-spectrum autoantibodies. This enhanced production of antibodies is also observed in hapten-immunized G390R mice, as well as in influenza-vaccinated human G396R homozygous carriers. This variant potentiates the phosphorylation of the IgG1 immunoglobulin tail tyrosine (ITT) motif. This, in turn, alters the availability of phospho-ITT to trigger longer adaptor protein Grb2 dwell times in immunological synapses, leading to hyper-Grb2-Bruton's tyrosine kinase (Btk) signaling upon antigen binding. Thus, the hIgG1-G396R variant is important for both lupus pathogenesis and antibody responses after vaccination.
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Affiliation(s)
- Xiangjun Chen
- Ministry of Education Key Laboratory of Protein Sciences, Center for Life Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Institute for Immunology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Xiaolin Sun
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking-Tsinghua Center for Life Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100044, China
| | - Wei Yang
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Bing Yang
- Ministry of Education Key Laboratory of Protein Sciences, Center for Life Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Institute for Immunology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Xiaozhen Zhao
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking-Tsinghua Center for Life Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100044, China
| | - Shuting Chen
- Ministry of Education Key Laboratory of Protein Sciences, Center for Life Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Institute for Immunology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Lili He
- Ministry of Education Key Laboratory of Protein Sciences, Center for Life Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Institute for Immunology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Hui Chen
- Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Changmei Yang
- Ministry of Education Key Laboratory of Protein Sciences, Center for Life Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Institute for Immunology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Le Xiao
- Ministry of Education Key Laboratory of Protein Sciences, Center for Life Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Institute for Immunology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Zai Chang
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Jianping Guo
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking-Tsinghua Center for Life Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100044, China
| | - Jing He
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking-Tsinghua Center for Life Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100044, China
| | - Fuping Zhang
- Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
| | - Fang Zheng
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhibin Hu
- Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Zhiyong Yang
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Jizhong Lou
- Laboratory of RNA Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Wenjie Zheng
- Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Hai Qi
- Tsinghua-Peking Center for Life Sciences, Laboratory of Dynamic Immunobiology, School of Medicine, Tsinghua University, Beijing 100084, China
| | - Chenqi Xu
- State Key Laboratory of Molecular Biology, Shanghai Science Research Center, CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai 200031, China
| | - Hong Zhang
- Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Beijing 100034, China
| | - Hongying Shan
- Department of Rheumatism and Immunology, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Xu-Jie Zhou
- Renal Division, Peking University First Hospital, Peking University Institute of Nephrology, Key Laboratory of Renal Disease, Ministry of Health of China, Beijing 100034, China
| | - Qingwen Wang
- Department of Rheumatism and Immunology, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Yi Shi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100101, China.,Research Network of Immunity and Health (RNIH), Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China
| | - Luhua Lai
- BNLMS, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, and Peking-Tsinghua Center for Life Sciences at College of Chemistry and Molecular Engineering, Center for Quantitative Biology, Peking University, Beijing 100871, China
| | - Zhanguo Li
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing Key Laboratory for Rheumatism and Immune Diagnosis (BZ0135), Peking-Tsinghua Center for Life Sciences, State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100044, China.
| | - Wanli Liu
- Ministry of Education Key Laboratory of Protein Sciences, Center for Life Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Institute for Immunology, School of Life Sciences, Tsinghua University, Beijing 100084, China. .,Beijing Key Lab for Immunological Research on Chronic Diseases, Beijing 100084, China
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167
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Morris G, Fernandes BS, Puri BK, Walker AJ, Carvalho AF, Berk M. Leaky brain in neurological and psychiatric disorders: Drivers and consequences. Aust N Z J Psychiatry 2018; 52:924-948. [PMID: 30231628 DOI: 10.1177/0004867418796955] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The blood-brain barrier acts as a highly regulated interface; its dysfunction may exacerbate, and perhaps initiate, neurological and neuropsychiatric disorders. METHODS In this narrative review, focussing on redox, inflammatory and mitochondrial pathways and their effects on the blood-brain barrier, a model is proposed detailing mechanisms which might explain how increases in blood-brain barrier permeability occur and can be maintained with increasing inflammatory and oxidative and nitrosative stress being the initial drivers. RESULTS Peripheral inflammation, which is causatively implicated in the pathogenesis of major psychiatric disorders, is associated with elevated peripheral pro-inflammatory cytokines, which in turn cause increased blood-brain barrier permeability. Reactive oxygen species, such as superoxide radicals and hydrogen peroxide, and reactive nitrogen species, such as nitric oxide and peroxynitrite, play essential roles in normal brain capillary endothelial cell functioning; however, chronically elevated oxidative and nitrosative stress can lead to mitochondrial dysfunction and damage to the blood-brain barrier. Activated microglia, redox control of which is mediated by nitric oxide synthases and nicotinamide adenine dinucleotide phosphate (NADPH) oxidases, secrete neurotoxic molecules such as reactive oxygen species, nitric oxide, prostaglandin, cyclooxygenase-2, quinolinic acid, several chemokines (including monocyte chemoattractant protein-1 [MCP-1], C-X-C motif chemokine ligand 1 [CXCL-1] and macrophage inflammatory protein 1α [MIP-1α]) and the pro-inflammatory cytokines interleukin-6, tumour necrosis factor-α and interleukin-1β, which can exert a detrimental effect on blood-brain barrier integrity and function. Similarly, reactive astrocytes produce neurotoxic molecules such as prostaglandin E2 and pro-inflammatory cytokines, which can cause a 'leaky brain'. CONCLUSION Chronic inflammatory and oxidative and nitrosative stress is associated with the development of a 'leaky gut'. The following evidence-based approaches, which address the leaky gut and blood-brain barrier dysfunction, are suggested as potential therapeutic interventions for neurological and neuropsychiatric disorders: melatonin, statins, probiotics containing Bifidobacteria and Lactobacilli, N-acetylcysteine, and prebiotics containing fructo-oligosaccharides and galacto-oligosaccharides.
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Affiliation(s)
- Gerwyn Morris
- 1 IMPACT Strategic Research Centre, Deakin University School of Medicine, and Barwon Health, Geelong, VIC, Australia
| | - Brisa S Fernandes
- 1 IMPACT Strategic Research Centre, Deakin University School of Medicine, and Barwon Health, Geelong, VIC, Australia.,2 Centre for Addiction and Mental Health (CAMH) and Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Basant K Puri
- 3 Department of Medicine, Hammersmith Hospital, Imperial College London, London, UK
| | - Adam J Walker
- 1 IMPACT Strategic Research Centre, Deakin University School of Medicine, and Barwon Health, Geelong, VIC, Australia
| | - Andre F Carvalho
- 2 Centre for Addiction and Mental Health (CAMH) and Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Michael Berk
- 1 IMPACT Strategic Research Centre, Deakin University School of Medicine, and Barwon Health, Geelong, VIC, Australia.,4 Orygen, The National Centre of Excellence in Youth Mental Health, The Department of Psychiatry and The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Parkville, VIC, Australia
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168
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Kostic M, Zivkovic N, Cvetanovic A, Stojanovic I. Granulocyte-macrophage colony-stimulating factor as a mediator of autoimmunity in multiple sclerosis. J Neuroimmunol 2018; 323:1-9. [DOI: 10.1016/j.jneuroim.2018.07.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 06/18/2018] [Accepted: 07/03/2018] [Indexed: 12/20/2022]
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169
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Hartwell BL, Pickens CJ, Leon M, Northrup L, Christopher MA, Griffin JD, Martinez-Becerra F, Berkland C. Soluble antigen arrays disarm antigen-specific B cells to promote lasting immune tolerance in experimental autoimmune encephalomyelitis. J Autoimmun 2018; 93:76-88. [PMID: 30007842 PMCID: PMC6117839 DOI: 10.1016/j.jaut.2018.06.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 06/19/2018] [Accepted: 06/21/2018] [Indexed: 12/26/2022]
Abstract
Autoreactive lymphocytes that escape central immune tolerance may be silenced via an endogenous peripheral tolerance mechanism known as anergy. Antigen-specific therapies capable of inducing anergy may restore patients with autoimmune diseases to a healthy phenotype while avoiding deleterious side effects associated with global immunosuppression. Inducing anergy in B cells may be a particularly potent intervention, as B cells can contribute to autoimmune diseases through multiple mechanisms and offer the potential for direct antigen-specific targeting through the B cell receptor (BCR). Our previous results suggested autoreactive B cells may be silenced by multivalent 'soluble antigen arrays' (SAgAs), which are polymer conjugates displaying multiple copies of autoantigen with or without a secondary peptide that blocks intracellular cell-adhesion molecule-1 (ICAM-1). Here, key therapeutic molecular properties of SAgAs were identified and linked to the immunological mechanism through comprehensive cellular and in vivo analyses. We determined non-hydrolyzable 'cSAgAs' displaying multivalent 'click'-conjugated antigen more potently suppressed experimental autoimmune encephalomyelitis (EAE) compared to hydrolyzable SAgAs capable of releasing conjugated antigen. cSAgAs restored a healthy phenotype in disease-specific antigen presenting cells (APCs) by inducing an anergic response in B cells and a subset of B cells called autoimmune-associated B cells (ABCs) that act as potent APCs in autoimmune disease. Accompanied by a cytokine response skewed towards a Th2/regulatory phenotype, this generated an environment of autoantigenic tolerance. By identifying key therapeutic molecular properties and an immunological mechanism that drives SAgA efficacy, this work guides the design of antigen-specific immunotherapies capable of inducing anergy.
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MESH Headings
- Animals
- Autoantigens/genetics
- Autoantigens/immunology
- B-Lymphocyte Subsets/drug effects
- B-Lymphocyte Subsets/immunology
- B-Lymphocyte Subsets/pathology
- Click Chemistry
- Clonal Anergy/drug effects
- Dendritic Cells/immunology
- Dendritic Cells/pathology
- Encephalomyelitis, Autoimmune, Experimental/chemically induced
- Encephalomyelitis, Autoimmune, Experimental/genetics
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/therapy
- Female
- Hydrolysis
- Immunoconjugates/chemistry
- Immunoconjugates/pharmacology
- Immunotherapy/methods
- Injections, Subcutaneous
- Intercellular Adhesion Molecule-1/genetics
- Intercellular Adhesion Molecule-1/immunology
- Mice
- Myelin Proteolipid Protein/administration & dosage
- Peptide Fragments/administration & dosage
- Peptide Fragments/chemical synthesis
- Peptide Fragments/immunology
- Peptide Fragments/pharmacology
- Protein Array Analysis
- Receptors, Antigen, B-Cell/genetics
- Receptors, Antigen, B-Cell/immunology
- Spleen/immunology
- Spleen/pathology
- Th2 Cells/immunology
- Th2 Cells/pathology
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Affiliation(s)
- Brittany L Hartwell
- Bioengineering Graduate Program, University of Kansas, 1520 West 15th Street, Lawrence, KS 66045, USA
| | - Chad J Pickens
- Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, KS 66047, USA
| | - Martin Leon
- Department of Chemistry, University of Kansas, 1251 Wescoe Hall Drive, Lawrence, KS 66045, USA
| | - Laura Northrup
- Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, KS 66047, USA
| | - Matthew A Christopher
- Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, KS 66047, USA
| | - J Daniel Griffin
- Bioengineering Graduate Program, University of Kansas, 1520 West 15th Street, Lawrence, KS 66045, USA
| | - Francisco Martinez-Becerra
- Immunology Core Laboratory of the Kansas Vaccine Institute, University of Kansas, 2030 Becker Drive, Lawrence, KS 66047, USA
| | - Cory Berkland
- Bioengineering Graduate Program, University of Kansas, 1520 West 15th Street, Lawrence, KS 66045, USA; Department of Pharmaceutical Chemistry, University of Kansas, 2095 Constant Avenue, Lawrence, KS 66047, USA; Department of Chemical and Petroleum Engineering, University of Kansas, 1530 West 15th Street, Lawrence, KS 66045, USA.
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170
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Bruzzì S, Sutti S, Giudici G, Burlone ME, Ramavath NN, Toscani A, Bozzola C, Schneider P, Morello E, Parola M, Pirisi M, Albano E. B2-Lymphocyte responses to oxidative stress-derived antigens contribute to the evolution of nonalcoholic fatty liver disease (NAFLD). Free Radic Biol Med 2018; 124:249-259. [PMID: 29920340 DOI: 10.1016/j.freeradbiomed.2018.06.015] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 06/11/2018] [Accepted: 06/13/2018] [Indexed: 01/04/2023]
Abstract
Recent evidence implicates adaptive immunity as a key player in the mechanisms supporting hepatic inflammation during the progression of nonalcoholic fatty liver disease (NAFLD). In these settings, patients with NAFLD often show an increase in the circulating levels of antibodies against oxidative stress-derived epitopes (OSE). Nonetheless, the actual role of humoral immunity in NAFLD is still unclear. This study investigates the contribution of B-lymphocytes to NAFLD evolution. B-lymphocyte immunostaining of liver biopsies from NAFLD patients showed that B-cells were evident within cell aggregates rich in T-lymphocytes. In these subjects, B/T-lymphocyte infiltration positively correlated with both circulating IgG targeting oxidative stress-derived epitopes (OSE) and interferon-γ (IFN-γ) levels. Furthermore, high prevalence of lymphocyte aggregates identified patients with more severe lobular inflammation and fibrosis. In mouse models of NAFLD, the onset of steatohepatitis was characterized by hepatic B2-lymphocytes maturation to plasma cells and by an elevation in circulating anti-OSE IgG titers. B-cell responses preceded T-cell activation and were accompanied by the up-regulation in the hepatic expression of B-cell Activating Factor (BAFF). Selective B2-cell depletion in mice over-expressing a soluble form of the BAFF/APRIL receptor Transmembrane Activator and Cyclophilin Ligand Interactor (TACI-Ig) prevented plasma cell maturation and Th-1 activation of liver CD4+ T-lymphocytes. Furthermore, TACI-Ig mice showed milder steatohepatitis and a decreased progression to fibrosis. Similarly, mice treatment with the BAFF-neutralizing monoclonal antibody Sandy-2 prevented hepatic B2-cell responses and ameliorated steatohepatitis. From these data we conclude that B2-lymphocyte activation is an early event in NAFLD evolution and contributes to the disease progression through the interaction with T-cells. Furthermore, combined clinical and experimental data suggest that elevated circulating anti-OSE IgG can identify a subset of NAFLD patients in whom adaptive immunity has a relevant role in the disease evolution toward fibrosis.
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Affiliation(s)
- Stefania Bruzzì
- Dept. of Health Sciences, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy
| | - Salvatore Sutti
- Dept. of Health Sciences, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy
| | - Gabriele Giudici
- Dept. of Health Sciences, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy
| | - Michela E Burlone
- Dept. of Translational Medicine, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy
| | - Naresh Naik Ramavath
- Dept. of Health Sciences, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy
| | - Alberto Toscani
- Dept. of Health Sciences, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy
| | - Cristina Bozzola
- Dept. of Health Sciences, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy
| | - Pascal Schneider
- Dept. of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Elisabetta Morello
- Dept. of Clinical and Biological Sciences, Unit of Experimental Medicine and Clinical Pathology, University of Turin, Turin, Italy
| | - Maurizio Parola
- Dept. of Clinical and Biological Sciences, Unit of Experimental Medicine and Clinical Pathology, University of Turin, Turin, Italy
| | - Mario Pirisi
- Dept. of Translational Medicine, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy
| | - Emanuele Albano
- Dept. of Health Sciences, Interdisciplinary Research Centre for Autoimmune Diseases, University "Amedeo Avogadro" of East Piedmont, Novara, Italy.
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171
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Lin Z, Liu L, Xia Y, Chen X, Xiong Y, Qu Y, Wang J, Bai Q, Guo J, Xu J. Tumor infiltrating CD19 + B lymphocytes predict prognostic and therapeutic benefits in metastatic renal cell carcinoma patients treated with tyrosine kinase inhibitors. Oncoimmunology 2018; 7:e1477461. [PMID: 30288343 DOI: 10.1080/2162402x.2018.1477461] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/28/2018] [Accepted: 05/13/2018] [Indexed: 12/31/2022] Open
Abstract
The objective response rate (ORR) of tyrosine kinase inhibitors (TKIs) therapy in metastatic renal cell cancer (mRCC) patients was not satisfactory. Effective indicator of mRCC patient selection for TKI therapy is urgently needed. The function of tumor infiltrating B lymphocytes (TIBs) in tumor immune elimination is still unclear. We aim to investigate the prognostic and predictive value of TIBs for TKI therapy in mRCC patients in this study. 108 eligible patients treated with TKI were enrolled in this study. TIBs was estimated by immunohistochemical staining of CD19 in the resected tumor, and its relationship with clinicopathological features, clinical outcomes and CD8+ tumor infiltrating T lymphocytes (CD8+ TILs) were evaluated. Associations between the expression level of CD19 and CD8+ TILs associated cytotoxic effectors were also assessed in public databases. Results showed TIBs positive infiltration predicted better therapeutic response to sunitinib (p = 0.006), longer overall survival (OS) (p < 0.001) and progression-free survival (PFS) (p = 0.028) in mRCC patients. Combining TIBs and International Metastatic Renal-Cell Carcinoma Database Consortium (IMDC) model showed a better predict value of OS in TKI-treated mRCC patients than IMDC model alone. We also found a positive correlation between TIBs and CD8+ TILs (p < 0.001). Patients with both cells high infiltration showed markedly better OS compared with those infiltrated by CD8+ T cells alone (p = 0.015). To conclude, TIBs density was not only an independent prognostic factor for mRCC patients, but also a predictive marker for TKI therapy response. It may potently enhance the antitumor effect by recruiting and activating CD8+ TILs in mRCC.
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Affiliation(s)
- Zhiyuan Lin
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Li Liu
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Yu Xia
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Xiang Chen
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Ying Xiong
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Yang Qu
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Jiajun Wang
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Qi Bai
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Jianming Guo
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai China
| | - Jiejie Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Fudan University, Shanghai China
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172
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Gallant MJ, Hogan NS. Developmental expression profiles and thyroidal regulation of cytokines during metamorphosis in the amphibian Xenopus laevis. Gen Comp Endocrinol 2018; 263:62-71. [PMID: 29656046 DOI: 10.1016/j.ygcen.2018.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 03/09/2018] [Accepted: 04/03/2018] [Indexed: 11/21/2022]
Abstract
Early life-stages of amphibians rely on the innate immune system for defense against pathogens. While thyroid hormones (TH) are critical for metamorphosis and later development of the adaptive immune system, the role of TH in innate immune system development is less clear. An integral part of the innate immune response are pro-inflammatory cytokines - effector molecules that allow communication between components of the immune system. The objective of this study was to characterize the expression of key pro-inflammatory cytokines, tumor necrosis factor-α (TNFα), interleukin-1β (IL-1β) and interferon-γ (IFN-γ), throughout amphibian development and determine the impacts of thyroidal modulation on their expression. Xenopus laevis were sampled at various stages of development encompassing early embryogenesis to late prometamorphosis and cytokine expression was measured by real-time PCR. Expression of TNFα and IL-1β were transient over development, increasing with developmental stage, while IFN-γ remained relatively stable. Functionally athyroid, premetamorphic tadpoles were exposed to thyroxine (0.5 and 2 μg/L) or sodium perchlorate (125 and 500 μg/L) for seven days. Tadpoles demonstrated characteristic responses of advanced development with thyroxine exposure and delayed development (although to a lesser extent) and increased thyroid gland area and follicular cell height with sodium perchlorate exposure. Exposure to thyroxine for two days resulted in decreased expression of IL-1β in tadpole trunks. Sodium perchlorate had negligible effects on cytokine expression. Overall, these results demonstrate that cytokine transcript levels vary with stage of tadpole development but that their ontogenic regulation is not likely exclusively influenced by thyroid status. Understanding the direct and indirect effects of altered hormone status may provide insight into potential mechanisms of altered immune function during amphibian development.
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Affiliation(s)
- Melanie J Gallant
- Toxicology Graduate Program, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada
| | - Natacha S Hogan
- Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5B3, Canada; Department of Animal and Poultry Science, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A8, Canada.
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173
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Multiplex ImmunoSpot ® Assays for the Study of Functional B Cell Subpopulations. Methods Mol Biol 2018. [PMID: 29956175 DOI: 10.1007/978-1-4939-8567-8_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
B cells mediate humoral immunity by producing antibody molecules, but they also participate in innate and acquired immune functions via the secretion of effector molecules such as cytokines, chemokines, and granzyme. B cell subpopulations releasing such effector molecules have been implicated in immunobiology and a number of diseases.Unlike antigen-specific T cells that can be identified by multimer staining, and then counter-stained to define T cell subpopulations, antigen-specific B cells cannot be detected by flow cytometry. Staining antigen-specific B cells with labeled antigen, in large, has been unsuccessful. Instead, antigen-specific B cells can be and are commonly studied by ELISPOT. In the ELISPOT approach, the B cell is identified via the antibody that it secretes being captured on a membrane by the antigen itself. Should it be feasible to measure simultaneously antibody production and the secretion of other secretory B cell products, it would then be possible to identify B cell subpopulations that co-express effector molecules. Here we introduce multiplex ELISPOT assays in which measurements of antibody secretion are combined with the detection of Granzyme B, IL-6, IL-10, IFN-γ, and TNF-α. Such multiplex assays will help define effector B cell subpopulations, as well as the understanding of their role in health and disease.
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174
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Rahmanzadeh R, Weber MS, Brück W, Navardi S, Sahraian MA. B cells in multiple sclerosis therapy-A comprehensive review. Acta Neurol Scand 2018; 137:544-556. [PMID: 29512131 DOI: 10.1111/ane.12915] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/06/2018] [Indexed: 12/25/2022]
Abstract
For decades, B cells were ignored in multiple sclerosis (MS) pathogenesis, and the disease was always regarded as a T cell-mediated disorder. Recent evidence shows that there is an antigen-driven B-cell response in the central nervous system of patients with MS, and memory B cells/plasma cells are detectable in MS lesions. The striking efficacy of B cell-depleting therapies in reducing the inflammatory activity of the disease highlights that B cells may play more pathogenetic roles than expected. B cells express several unique characteristic markers on their surface, for example, CD19, CD20 molecules, that provide selective targets for monoclonal antibodies. In this respect, several B cell-targeted therapies emerged, including anti-CD20 antibodies (rituximab, ocrelizumab, and ofatumumab), anti-CD19 antibody (inebilizumab), and agents targeting the BAFF/APRIL signaling pathway (atacicept, belimumab, and LY2127399). In this review, we discuss, in detail, the immunobiology of B cells and their protective and destructive roles in MS pathogenesis. In the second part, we list the completed and ongoing clinical trials investigating the safety and efficacy of B cell-related monoclonal antibodies in MS.
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Affiliation(s)
- R. Rahmanzadeh
- MS Research Center; Neuroscience Institute; Tehran University of Medical Science; Tehran Iran
| | - M. S. Weber
- Institute of Neuropathology; University Medical Center; Göttingen Germany
- Department of Neurology; University Medical Center; Göttingen Germany
| | - W. Brück
- Institute of Neuropathology; University Medical Center; Göttingen Germany
- Department of Neurology; University Medical Center; Göttingen Germany
| | - S. Navardi
- MS Research Center; Neuroscience Institute; Tehran University of Medical Science; Tehran Iran
| | - M. A. Sahraian
- MS Research Center; Neuroscience Institute; Tehran University of Medical Science; Tehran Iran
- Iranian Center for Neurological Research; Neuroscience Institute; Tehran University of Medical Science; Tehran Iran
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175
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Alwarawrah Y, Kiernan K, MacIver NJ. Changes in Nutritional Status Impact Immune Cell Metabolism and Function. Front Immunol 2018; 9:1055. [PMID: 29868016 PMCID: PMC5968375 DOI: 10.3389/fimmu.2018.01055] [Citation(s) in RCA: 293] [Impact Index Per Article: 48.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 04/27/2018] [Indexed: 12/15/2022] Open
Abstract
Immune cell function and metabolism are closely linked. Many studies have now clearly demonstrated that alterations in cellular metabolism influence immune cell function and that, conversely, immune cell function determines the cellular metabolic state. Less well understood, however, are the effects of systemic metabolism or whole organism nutritional status on immune cell function and metabolism. Several studies have demonstrated that undernutrition is associated with immunosuppression, which leads to both increased susceptibility to infection and protection against several types of autoimmune disease, whereas overnutrition is associated with low-grade, chronic inflammation that increases the risk of metabolic and cardiovascular disease, promotes autoreactivity, and disrupts protective immunity. Here, we review the effects of nutritional status on immunity and highlight the effects of nutrition on circulating cytokines and immune cell populations in both human studies and mouse models. As T cells are critical members of the immune system, which direct overall immune response, we will focus this review on the influence of systemic nutritional status on T cell metabolism and function. Several cytokines and hormones have been identified which mediate the effects of nutrition on T cell metabolism and function through the expression and action of key regulatory signaling proteins. Understanding how T cells are sensitive to both inadequate and overabundant nutrients may enhance our ability to target immune cell metabolism and alter immunity in both malnutrition and obesity.
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Affiliation(s)
- Yazan Alwarawrah
- Department of Pediatrics, Duke University Medical Center, Durham, NC, United States
| | - Kaitlin Kiernan
- Department of Immunology, Duke University Medical Center, Durham, NC, United States
| | - Nancie J MacIver
- Department of Pediatrics, Duke University Medical Center, Durham, NC, United States.,Department of Immunology, Duke University Medical Center, Durham, NC, United States.,Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC, United States
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176
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CD20+ Tumor Infiltrating B Lymphocyte in Oral Squamous Cell Carcinoma: Correlation with Clinicopathologic Characteristics and Heat Shock Protein 70 Expression. PATHOLOGY RESEARCH INTERNATIONAL 2018; 2018:4810751. [PMID: 29850009 PMCID: PMC5904773 DOI: 10.1155/2018/4810751] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/16/2018] [Accepted: 03/05/2018] [Indexed: 12/23/2022]
Abstract
Objective B lymphocyte infiltration in the tumor microenvironment has been proposed to play pivotal roles in tumor progression. Heat shock protein 70 (HSP70) expressed by tumor cells can induce antitumor immune response. Few studies have examined the clinicopathologic relationship between tumor infiltrating B lymphocyte and HSP70 expression in human cancer. So far, there is no complete knowledge on the relationship in oral squamous cell carcinoma (OSCC). The present study was conducted to evaluate the relationship between tumor infiltrating B lymphocyte and HSP70 expression in OSCC, as well as the clinical outcome. Materials and Methods In this retrospective study, the immunohistochemical analysis of 50 OSCC specimens was performed using CD20 and HSP70 antibodies. The relationship between markers' expression and clinicopathologic data was evaluated using Mann–Whitney test, Chi-square test, logistic regression model, and Spearman's correlation coefficient. Results The data analysis showed significant correlation between peritumoral CD20+ B lymphocyte infiltration and lymph node metastasis (P = 0.047). Furthermore, HSP70 expression was significantly correlated with stage (P = 0.003), lymph node metastasis (P < 0.001), and tumor size (P = 0.044). However, no relationship was observed between B lymphocyte infiltration and HSP70 expression. Conclusion The results suggest that peritumoral B lymphocyte infiltration and HSP70 expression level have significant association with OSCC and may be considered as prognostic indicators in OSCC. Thus, evaluation of B cells as therapeutic targets in OSCC patients is recommended.
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177
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Karrar S, Cunninghame Graham DS. Abnormal B Cell Development in Systemic Lupus Erythematosus: What the Genetics Tell Us. Arthritis Rheumatol 2018; 70:496-507. [PMID: 29207444 PMCID: PMC5900717 DOI: 10.1002/art.40396] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 11/29/2017] [Indexed: 12/15/2022]
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178
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Affiliation(s)
- Grace J Yuen
- Ragon Institute of MGH, MIT and Harvard, Harvard Medical School, Cambridge MA 02139
| | - Ezana Demissie
- Ragon Institute of MGH, MIT and Harvard, Harvard Medical School, Cambridge MA 02139
| | - Shiv Pillai
- Ragon Institute of MGH, MIT and Harvard, Harvard Medical School, Cambridge MA 02139
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179
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Al-Banna NA, Cyprian F, Albert MJ. Cytokine responses in campylobacteriosis: Linking pathogenesis to immunity. Cytokine Growth Factor Rev 2018; 41:75-87. [PMID: 29550265 DOI: 10.1016/j.cytogfr.2018.03.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 03/08/2018] [Indexed: 12/15/2022]
Abstract
Campylobacter jejuni is an important enteric pathogen that causes diarrheas of different degrees of severity and several extra-intestinal manifestations, including Guillain-Barre syndrome. The variability of disease outcomes is thought to be linked to the immune response induced by C. jejuni. The virulence factors of C. jejuni induce a pro-inflammatory response, that is initiated by the intestinal epithelial cells, propagated by innate immune cells and modulated by the cells of the adaptive immune response. This review focuses on cytokines, that are reported to orchestrate the induction and propagation of pro-inflammatory immune response, and also those that are involved in control and resolution of inflammation. We describe the functional roles of a number of cytokines in modulating anti-Campylobacter immune responses: 1. cytokines of innate immunity (TNF-α, IL-6, and IL-8) as initiators of inflammatory response, 2. cytokines of antigen-presenting cells (IL-1β, IL-12, and IL-23) as promoters of pro-inflammatory response, 3. cytokines produced by T cells (IFN-γ, IL-17, IL-22) as activators of T cells, and 4. anti-inflammatory cytokines (IL-4 and IL-10) as inhibitors of pro-inflammatory responses. We highlight the roles of cytokines as potential therapeutic agents that are under investigation. In the end, we pose several questions that remain unanswered in our quest to understand Campylobacter immunity.
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Affiliation(s)
- Nadia A Al-Banna
- Department of Basic Medical Sciences, College of Medicine, QU Health Cluster, Qatar University, Doha, Qatar.
| | - Farhan Cyprian
- Department of Basic Medical Sciences, College of Medicine, QU Health Cluster, Qatar University, Doha, Qatar.
| | - M John Albert
- Department of Microbiology, Faculty of Medicine, Kuwait University, Jabriya, Kuwait.
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180
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van Rensburg IC, du Toit L, Walzl G, du Plessis N, Loxton AG. Decreased neutrophil-associated miRNA and increased B-cell associated miRNA expression during tuberculosis. Gene 2018; 655:35-41. [PMID: 29477867 DOI: 10.1016/j.gene.2018.02.052] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 02/16/2018] [Accepted: 02/21/2018] [Indexed: 12/11/2022]
Abstract
MicroRNAs are short non-coding RNAs that regulate gene expression by binding to, and suppressing the expression of genes. Research show that microRNAs have potential to be used as biomarkers for diagnosis, treatment response and can be used for therapeutic interventions. Furthermore, microRNA expression has effects on immune cell functions, which may lead to disease. Considering the important protective role of neutrophils and B-cells during M.tb infection, we evaluated the expression of microRNAs, known to alter function of these cells, in the context of human TB. We utilised real-time PCR to evaluate the levels of microRNA transcripts in the peripheral blood of TB cases and healthy controls. We found that neutrophil-associated miR-197-3p, miR-99b-5p and miR-191-5p transcript levels were significantly lower in TB cases. Additionally, B-cell-associated miR-320a, miR-204-5p, miR331-3p and other transcript levels were higher in TB cases. The miRNAs differentially expressed in neutrophils are predominantly implicated in signalling pathways leading to cytokine productions. Here, the decreased expression in TB cases may imply a lack of suppression on signalling pathways, which may lead to increased production of pro-inflammatory cytokines such as interferon-gamma. Furthermore, the miRNAs differentially expressed in B-cells are mostly involved in the induction/suppression of apoptosis. Further functional studies are however required to elucidate the significance and functional effects of changes in the expression of these microRNAs.
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Affiliation(s)
- I C van Rensburg
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town 8000, South Africa
| | - L du Toit
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town 8000, South Africa
| | - G Walzl
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town 8000, South Africa
| | - N du Plessis
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town 8000, South Africa
| | - A G Loxton
- SA MRC Centre for TB Research, DST/NRF Centre of Excellence for Biomedical Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, PO Box 241, Cape Town 8000, South Africa.
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181
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Jenberie S, Thim HL, Sunyer JO, Skjødt K, Jensen I, Jørgensen JB. Profiling Atlantic salmon B cell populations: CpG-mediated TLR-ligation enhances IgM secretion and modulates immune gene expression. Sci Rep 2018; 8:3565. [PMID: 29476080 PMCID: PMC5824956 DOI: 10.1038/s41598-018-21895-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/25/2018] [Indexed: 12/18/2022] Open
Abstract
While TLR-activated pathways are key regulators of B cell responses in mammals, their impact on teleost B cells are scarcely addressed. Here, the potential of Atlantic salmon B cells to respond to TLR ligands was shown by demonstrating a constitutive expression of nucleic-acid sensing TLRs in magnetic sorted IgM+ cells. Of the two receptors recognizing CpG in teleosts, tlr9 was the dominating receptor with over ten-fold higher expression than tlr21. Upon CpG-stimulation, IgM secretion increased for head kidney (HK) and splenic IgM+ cells, while blood B cells were marginally affected. The results suggest that CpG directly affects salmon B cells to differentiate into antibody secreting cells (ASCs). IgM secretion was also detected in the non-treated controls, again with the highest levels in the HK derived population, signifying that persisting ASCs are present in this tissue. In all tissues, the IgM+ cells expressed high MHCII levels, suggesting antigen-presenting functions. Upon CpG-treatment the co-stimulatory molecules cd83 and cd40 were upregulated, while cd86 was down-regulated under the same conditions. Finally, ifna1 was upregulated upon CpG-stimulation in all tissues, while a restricted upregulation was evident for ifnb, proposing that salmon IgM+ B cells exhibit a type I IFN-response.
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Affiliation(s)
- Shiferaw Jenberie
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries & Economics, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Hanna L Thim
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries & Economics, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - J Oriol Sunyer
- Department of Pathology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA
| | - Karsten Skjødt
- Department of Immunology and Microbiology, Institute of Medical Biology, University of Southern Denmark, Odense, Denmark
| | - Ingvill Jensen
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries & Economics, University of Tromsø - The Arctic University of Norway, Tromsø, Norway
| | - Jorunn B Jørgensen
- Norwegian College of Fishery Science, Faculty of Biosciences, Fisheries & Economics, University of Tromsø - The Arctic University of Norway, Tromsø, Norway.
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182
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Zhiming W, Luman W, Tingting Q, Yiwei C. Chemokines and receptors in intestinal B lymphocytes. J Leukoc Biol 2018; 103:807-819. [PMID: 29443417 DOI: 10.1002/jlb.1ru0717-299rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Revised: 01/11/2018] [Accepted: 01/11/2018] [Indexed: 02/06/2023] Open
Abstract
Recent studies indicate that chemoattractant cytokines (chemokines) and their receptors modulate intestinal B lymphocytes in different ways, including regulating their maturity and differentiation in the bone marrow and homing to intestinal target tissues. Here, we review several important chemokine/chemokine receptor axes that guide intestinal B cells, focusing on the homing and migration of IgA antibody-secreting cells (IgA-ASCs) to intestinal-associated lymphoid tissues. We describe the selective regulation of these chemokine axes in coordinating the IgA-ASC trafficking in intestinal diseases. Finally, we discuss the role of B cells as chemokine producers serving dual roles in regulating the mucosal immune microenvironment.
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Affiliation(s)
- Wang Zhiming
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Wang Luman
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Center, Fudan University, Shanghai, China
| | - Qian Tingting
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Chu Yiwei
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Center, Fudan University, Shanghai, China
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183
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Seifert HA, Vandenbark AA, Offner H. Regulatory B cells in experimental stroke. Immunology 2018; 154:169-177. [PMID: 29313944 DOI: 10.1111/imm.12887] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 12/21/2017] [Accepted: 12/28/2017] [Indexed: 12/30/2022] Open
Abstract
Current treatment options for human stroke are limited mainly to the modestly effective infusion of tissue plasminogen activator (tPA), with additional improvement of functional independence and higher rates of angiographic revascularization observed after mechanical thrombectomy. However, new therapeutic strategies that address post-stroke immune-mediated inflammatory responses are urgently needed. Recent studies in experimental stroke have firmly implicated immune mechanisms in the propagation and partial resolution of central nervous system damage after the ischaemic event. A new-found anti-inflammatory role for regulatory B (Breg) cells in autoimmune diseases sparked interest in these cells as potential immunomodulators in stroke. Subsequent studies identified interleukin-10 as a common regulatory cytokine among all five of the currently recognized Breg cell subsets, several of which can be found in the affected brain hemisphere after induction of experimental stroke in mice. Transfer of enriched Breg cell subpopulations into both B-cell-depleted and wild-type mice confirmed their potent immunosuppressive activities in vivo, including recruitment and potentiation of regulatory T cells. Moreover, Breg cell therapy strongly reduced stroke volumes and treatment outcomes in ischaemic mice even when administered 24 hr after induction of experimental stroke, a treatment window far exceeding that of tPA. These striking results suggest that transfer of enriched Breg cell populations could have therapeutic value in human stroke, although considerable clinical challenges remain.
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Affiliation(s)
- Hilary A Seifert
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA.,Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Arthur A Vandenbark
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA.,Department of Neurology, Oregon Health & Science University, Portland, OR, USA.,Department of Molecular Microbiology & Immunology, Oregon Health & Science University, Portland, OR, USA
| | - Halina Offner
- Neuroimmunology Research, VA Portland Health Care System, Portland, OR, USA.,Department of Neurology, Oregon Health & Science University, Portland, OR, USA.,Department of Anesthesiology & Perioperative Medicine, Oregon Health & Science University, Portland, OR, USA
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184
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Kaplon H, Dieu-Nosjean MC. Quel avenir pour les lymphocytes B infiltrant les tumeurs solides. Med Sci (Paris) 2018; 34:72-78. [DOI: 10.1051/medsci/20183401016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Le rôle des lymphocytes B (LB) dans l’immuno-surveillance des tumeurs a longtemps été négligé car il a été souvent considéré comme peu efficace, voire pro-tumoral. Des études approfondies du microenvironnement immunitaire, notamment dans les cancers humains, ont permis de préciser la nature des interactions entre le LB et ses partenaires cellulaires. Cette revue examine un certain nombre de paramètres qui dictent le devenir du LB vers une fonction pro-ou anti-tumorale. Ainsi, la capacité à élaborer une immunité antitumorale qui repose sur les lymphocytes B, et/ ou des anticorps qu’ils sécrètent, fait appel à une palette très variée de mécanismes moléculaires et cellulaires dont certains pourraient représenter de nouvelles cibles thérapeutiques en oncologie.
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185
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Leibler C, Thiolat A, Hénique C, Samson C, Pilon C, Tamagne M, Pirenne F, Vingert B, Cohen JL, Grimbert P. Control of Humoral Response in Renal Transplantation by Belatacept Depends on a Direct Effect on B Cells and Impaired T Follicular Helper-B Cell Crosstalk. J Am Soc Nephrol 2018; 29:1049-1062. [PMID: 29321143 DOI: 10.1681/asn.2017060679] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 12/15/2017] [Indexed: 12/14/2022] Open
Abstract
Generation of de novo donor-specific antibodies (dnDSAs) after renal transplant is recognized as the leading cause of late transplant failure. Hence, the optimal immunosuppressive strategies to limit dnDSA development need to be defined. Recent clinical trials using the novel costimulatory blockade agent CTLA4-Ig (Belatacept) have shown that kidney transplant recipients (KTRs) treated with Belatacept have better graft survival and function and a lower proportion of dnDSAs than control-treated KTRs. Mechanisms involved in the control of humoral responses by Belatacept remain to be investigated. Here, we analyzed the effect of Belatacept on different steps of the B cell-mediated response in humans. In vitro, Belatacept reduced plasmablast differentiation, Ig production, and the expression of the major transcription factor involved in plasma cell function, Blimp-1, in a T cell-independent manner. Moreover, Belatacept induced activation of the STAT3 transcription factor in stimulated B cells and reduced the expression of CD86. Additionally, Belatacept blocked CD28-mediated activation of T follicular helper cells (Tfhs) in an autologous Tfh-memory B cells model. We then validated these observations in KTRs treated with Belatacept, who had a reduced proportion of blood effector B cells and activated Tfh (PD1+ICOS+) compared with control-treated KTRs. Our in vitro and in vivo results suggest that Belatacept modulates B cell function directly and at the level of B cell-Tfh interaction. These mechanisms likely account for the optimal control of humoral responses observed in KTRs treated with Belatacept.
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Affiliation(s)
- Claire Leibler
- Université Paris-Est, Unité Mixte de Recherche 955, Université Paris-Est-Créteil, Creteil, France.,U955, Team 21, Institut National de la Santé et de la Recherche Médicale, Creteil, France.,Hopital Henri-Mondor-A. Chenevier, CIC-BT-504, Assistance Publique-Hôpitaux de Paris, Creteil, France; and
| | - Allan Thiolat
- Université Paris-Est, Unité Mixte de Recherche 955, Université Paris-Est-Créteil, Creteil, France.,U955, Team 21, Institut National de la Santé et de la Recherche Médicale, Creteil, France
| | - Carole Hénique
- Université Paris-Est, Unité Mixte de Recherche 955, Université Paris-Est-Créteil, Creteil, France.,U955, Team 21, Institut National de la Santé et de la Recherche Médicale, Creteil, France
| | - Chloé Samson
- Université Paris-Est, Unité Mixte de Recherche 955, Université Paris-Est-Créteil, Creteil, France.,U955, Team 21, Institut National de la Santé et de la Recherche Médicale, Creteil, France
| | - Caroline Pilon
- Université Paris-Est, Unité Mixte de Recherche 955, Université Paris-Est-Créteil, Creteil, France.,U955, Team 21, Institut National de la Santé et de la Recherche Médicale, Creteil, France
| | - Marie Tamagne
- U955, Team 2, Institut National de la Santé et de la Recherche Médicale, Creteil, France
| | - France Pirenne
- U955, Team 2, Institut National de la Santé et de la Recherche Médicale, Creteil, France
| | - Benoit Vingert
- U955, Team 2, Institut National de la Santé et de la Recherche Médicale, Creteil, France
| | - José L Cohen
- Université Paris-Est, Unité Mixte de Recherche 955, Université Paris-Est-Créteil, Creteil, France.,U955, Team 21, Institut National de la Santé et de la Recherche Médicale, Creteil, France.,Hopital Henri-Mondor-A. Chenevier, CIC-BT-504, Assistance Publique-Hôpitaux de Paris, Creteil, France; and
| | - Philippe Grimbert
- Université Paris-Est, Unité Mixte de Recherche 955, Université Paris-Est-Créteil, Creteil, France; .,U955, Team 21, Institut National de la Santé et de la Recherche Médicale, Creteil, France.,Hopital Henri-Mondor-A. Chenevier, CIC-BT-504, Assistance Publique-Hôpitaux de Paris, Creteil, France; and
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186
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Appenheimer MM, Evans SS. Temperature and adaptive immunity. HANDBOOK OF CLINICAL NEUROLOGY 2018; 156:397-415. [DOI: 10.1016/b978-0-444-63912-7.00024-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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187
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Santaguida MG, Gatto I, Mangino G, Virili C, Stramazzo I, Fallahi P, Antonelli A, Gargiulo P, Romeo G, Centanni M. Breg Cells in Celiac Disease Isolated or Associated to Hashimoto's Thyroiditis. Int J Endocrinol 2018; 2018:5290865. [PMID: 30402096 PMCID: PMC6196981 DOI: 10.1155/2018/5290865] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/16/2018] [Accepted: 09/08/2018] [Indexed: 12/18/2022] Open
Abstract
Hashimoto's thyroiditis (HT) may occur associated with celiac disease (CD). Regulatory B cells (Breg) subsets have been shown to play a significant role in autoimmune processes. Therefore, we have characterized their distribution in the peripheral blood obtained from 10 patients with isolated HT, 10 patients with HT + CD, 9 patients with isolated CD, and 9 healthy donors (HD). Th17 cells were significantly increased in patients with HT and in patients bearing both HT and CD, while patients with isolated CD exhibited a lower percentage of Th17, as compared with healthy donors. CD24hiCD38hi Breg cells were significantly higher in patients with HT + CD and in patients with isolated CD as compared to both HD patients and patients with isolated HT (p = 0.0010). On the contrary, Breg memory phenotypes (CD24hiCD38- and CD24hiCD27+) significantly decreased in patients with HT + CD as compared with the isolated disorders. Following CpG oligodeoxynucleotide stimulation, IL-10+ CD24hiCD38hi Breg cells were similar in all groups of patients, despite these cells would have been higher in CD patients. In conclusion, celiac disease, isolated and even more when associated with HT, determines a peculiar behavior of Breg cells which are increased in number but possibly functionally defective. Furthermore, the association CD + HT was characterized by a reduction of Breg memory subsets as compared with the isolated disorders. The behavior of Th17 subset in patients with celiac disease associated with HT might have been sensitive to the effect of long-lasting GFD, and it is essentially determined by the presence of thyroid autoimmunity.
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Affiliation(s)
- Maria Giulia Santaguida
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Latina, Italy
| | - Ilenia Gatto
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Latina, Italy
| | - Giorgio Mangino
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Latina, Italy
| | - Camilla Virili
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Latina, Italy
| | - Ilaria Stramazzo
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Latina, Italy
| | - Poupak Fallahi
- Department of Clinical and Experimental Medicine, University of Pisa, Italy
| | | | - Patrizia Gargiulo
- Department of Experimental Medicine, “Sapienza” University of Rome, Italy
| | - Giovanna Romeo
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Latina, Italy
| | - Marco Centanni
- Department of Medico-Surgical Sciences and Biotechnologies, “Sapienza” University of Rome, Latina, Italy
- Endocrinology Unit, AUSL Latina, Latina, Italy
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188
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Greenfield AL, Hauser SL. B-cell Therapy for Multiple Sclerosis: Entering an era. Ann Neurol 2018; 83:13-26. [PMID: 29244240 PMCID: PMC5876115 DOI: 10.1002/ana.25119] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 12/01/2017] [Accepted: 12/09/2017] [Indexed: 12/12/2022]
Abstract
Monoclonal antibodies that target CD20 expressing B cells represent an important new treatment option for patients with multiple sclerosis (MS). B-cell-depleting therapy is highly effective against relapsing forms of the disease and is also the first treatment approach proven to protect against disability worsening in primary progressive MS. Moreover, evolving clinical experience with B-cell therapy, combined with a more sophisticated understanding of humoral immunity in preclinical models and in patients with MS, has led to major progress in deciphering the immune pathogenesis of MS. Here, we review the nuanced roles of B cells in MS autoimmunity, the clinical data supporting use of ocrelizumab and other anti-CD20 therapies in the treatment of MS, as well as safety and practical considerations for prescribing. Last, we summarize remaining unanswered questions regarding the proper role of anti-CD20 therapy in MS, its limitations, and the future landscape of B-cell-based approaches to treatment. Ann Neurol 2018;83:13-26.
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Affiliation(s)
- Ariele L. Greenfield
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, California
| | - Stephen L. Hauser
- Weill Institute for Neurosciences, Department of Neurology, University of California, San Francisco, San Francisco, California
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189
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Killer (FASL regulatory) B cells are present during latent TB and are induced by BCG stimulation in participants with and without latent tuberculosis. Tuberculosis (Edinb) 2018. [DOI: 10.1016/j.tube.2017.11.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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190
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Abstract
Atherosclerosis is initiated by cholesterol entry into arteries that triggers chronic immune-inflammatory lesions in the vessels. Early lesions are clinically insignificant but advanced complex lesions and vulnerable rupture prone lesions impact on quality of life and can be life threatening. Rupture of vulnerable atherosclerotic lesions initiates thrombotic occlusion of vital arteries precipitating heart attacks and strokes that remain major killers globally despite therapeutic use of statins to lower blood cholesterol levels. Conventional B2 cells are proatherogenic whereas peritoneal Bla cells are atheroprotective. Depletion of B2 cells by administration of mAb to CD20 or to BAFF receptor or in BAFF receptor-deficient mice ameliorates atherosclerosis. B2 cells may promote atherosclerosis by production of IgG, secretion of proinflammatory cytokine TNFα and activation of CD4 T cells. Together these B2 cell mechanisms contribute to generation of rupture-prone vulnerable atherosclerotic plaques characterised by large necrotic cores. In contrast, peritoneal Bla cells protect against atherosclerosis by secretion of natural IgM that scavenges apoptotic cells and oxidised LDL and reduces necrotic cores in atherosclerotic lesions. These atheroprotective effects can be further increased by stimulating Bla cells by administration of apoptotic cells, liposomes of phosphatidylserine abundant on surfaces of apoptotic cell, by mAb to TIM1, a phosphatidylserine receptor expressed by B1a cells and by TLR4-MyD88 activation. Experimental studies of atherosclerosis in mouse models indicate that reductions in atherogenic B2 cells and/or activation of atheroprotective B1a cells protects against atherosclerosis development, findings which have potential for clinical translation to reduce risks of deaths from heart attacks and strokes.
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Affiliation(s)
- Tin Kyaw
- a Australia and Baker IDI Heart and Diabetes Institute , Victoria , Australia.,b Department of Medicine , Southern Clinical School, Monash University , Victoria , Australia , and
| | - Peter Tipping
- b Department of Medicine , Southern Clinical School, Monash University , Victoria , Australia , and
| | - Alex Bobik
- a Australia and Baker IDI Heart and Diabetes Institute , Victoria , Australia.,c Department of Immunology , Central Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University , Victoria , Australia
| | - Ban-Hock Toh
- b Department of Medicine , Southern Clinical School, Monash University , Victoria , Australia , and
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191
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Bocian K, Kiernozek E, Domagała-Kulawik J, Korczak-Kowalska G, Stelmaszczyk-Emmel A, Drela N. Expanding Diversity and Common Goal of Regulatory T and B Cells. I: Origin, Phenotype, Mechanisms. Arch Immunol Ther Exp (Warsz) 2017; 65:501-520. [PMID: 28477096 PMCID: PMC5688216 DOI: 10.1007/s00005-017-0469-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 03/14/2017] [Indexed: 12/21/2022]
Abstract
Immunosuppressive activity of regulatory T and B cells is critical to limit autoimmunity, excessive inflammation, and pathological immune response to conventional antigens or allergens. Both types of regulatory cells are intensively investigated, however, their development and mechanisms of action are still not completely understood. Both T and B regulatory cells represent highly differentiated populations in terms of phenotypes and origin, however, they use similar mechanisms of action. The most investigated CD4+CD25+ regulatory T cells are characterized by the expression of Foxp3+ transcription factor, which is not sufficient to maintain their lineage stability and suppressive function. Currently, it is considered that specific epigenetic changes are critical for defining regulatory T cell stability in the context of their suppressive function. It is not yet known if similar epigenetic regulation determines development, lineage stability, and function of regulatory B cells. Phenotype diversity, confirmed or hypothetical developmental pathways, multiple mechanisms of action, and role of epigenetic changes in these processes are the subject of this review.
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Affiliation(s)
- Katarzyna Bocian
- Department of Immunology, Faculty of Biology, University of Warsaw, Warsaw, Poland.
| | - Ewelina Kiernozek
- Department of Immunology, Faculty of Biology, University of Warsaw, Warsaw, Poland.
| | | | - Grażyna Korczak-Kowalska
- Department of Immunology, Faculty of Biology, University of Warsaw, Warsaw, Poland
- Department of Clinical Immunology, Transplantation Institute, Medical University of Warsaw, Warsaw, Poland
| | - Anna Stelmaszczyk-Emmel
- Department of Laboratory Diagnostics and Clinical Immunology of Developmental Age, Medical University of Warsaw, Warsaw, Poland
| | - Nadzieja Drela
- Department of Immunology, Faculty of Biology, University of Warsaw, Warsaw, Poland
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192
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Ali MF, Dasari H, Van Keulen VP, Carmona EM. Canonical Stimulation of the NLRP3 Inflammasome by Fungal Antigens Links Innate and Adaptive B-Lymphocyte Responses by Modulating IL-1β and IgM Production. Front Immunol 2017; 8:1504. [PMID: 29170665 PMCID: PMC5684107 DOI: 10.3389/fimmu.2017.01504] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 10/25/2017] [Indexed: 01/02/2023] Open
Abstract
The NLRP3 inflammasome is activated in response to different bacterial, viral, and fungal pathogens and serves as modulator of different pattern recognition receptors signaling pathways. One of the main functions of NLRP3 is to participate in IL-1β maturation which is important in the host defense against Pneumocystis and other fungal infections. However, dysregulation of NLRP3 and IL-1β secretion are also implicated in the pathophysiology of many auto-inflammatory disorders. Often time’s inflammatory flares are preceded by infectious illnesses questioning the role of infection in autoimmune exacerbations. However, we still do not fully understand the exact role that infection or even colonization plays as a trigger of inflammation. Herein, we investigated the role of NLRP3 in circulating B-lymphocytes following activation with two major microbial antigens (β-glucan and CpG). NLRP3 was determined essential in two independent B-lymphocytes processes: pro-inflammatory cytokine secretion and antibody regulation. Our results show that the β-glucan fungal cell wall carbohydrate stimulated B-lymphocytes to secrete IL-1β in a process partially mediated by Dectin-1 activation via SYK and the transcription factors NF-κB and AP-1. This IL-1β secretion was regulated by the NLRP3 inflammasome and was dependent on potassium efflux and Caspase-1. Interestingly, B-lymphocytes activated by unmethylated CpG motifs, found in bacterial and fungal DNA, failed to induce IL-1β. However, B-lymphocyte stimulation by CpG resulted in NLRP3 and Caspase-1 activation and the production and secretion of IgM antibodies. Furthermore, CpG-stimulated IgM secretion, unlike β-glucan-mediated IL-1β production, was mediated by the mammalian target of rapamycin (mTOR). Inhibition of NLRP3 and the mTOR pathway in CpG activated B-lymphocytes resulted in impaired IgM secretion suggesting their participation in antibody regulation. In conclusion, this study describes a differential response of NLRP3 to β-glucan and CpG antigens and identifies the NLRP3 inflammasome of human circulating B-lymphocytes as a modulator of the innate and adaptive immune systems.
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Affiliation(s)
- Mohamed F Ali
- The Thoracic Diseases Research Unit and the Division of Pulmonary and Critical Care, Department of Medicine Mayo Clinic and Foundation, Rochester, MN, United States
| | - Harika Dasari
- The Thoracic Diseases Research Unit and the Division of Pulmonary and Critical Care, Department of Medicine Mayo Clinic and Foundation, Rochester, MN, United States
| | - Virginia P Van Keulen
- The Thoracic Diseases Research Unit and the Division of Pulmonary and Critical Care, Department of Medicine Mayo Clinic and Foundation, Rochester, MN, United States
| | - Eva M Carmona
- The Thoracic Diseases Research Unit and the Division of Pulmonary and Critical Care, Department of Medicine Mayo Clinic and Foundation, Rochester, MN, United States
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193
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Abstract
Type 1 diabetes mellitus (T1DM) is an autoimmune disorder that affects an estimated 30 million people worldwide. It is characterized by the destruction of pancreatic β cells by the immune system, which leads to lifelong dependency on exogenous insulin and imposes an enormous burden on patients and health-care resources. T1DM is also associated with an increased risk of comorbidities, such as cardiovascular disease, retinopathy, and diabetic kidney disease (DKD), further contributing to the burden of this disease. Although T cells are largely considered to be responsible for β-cell destruction in T1DM, increasing evidence points towards a role for B cells in disease pathogenesis. B cell-depletion, for example, delays disease progression in patients with newly diagnosed T1DM. Loss of tolerance of islet antigen-reactive B cells occurs early in disease and numbers of pancreatic CD20+ B cells correlate with β-cell loss. Although the importance of B cells in T1DM is increasingly apparent, exactly how these cells contribute to disease and its comorbidities, such as DKD, is not well understood. Here we discuss the role of B cells in the pathogenesis of T1DM and how these cells are activated during disease development. Finally, we speculate on how B cells might contribute to the development of DKD.
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194
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Zhu S, Wang X, Wang J, Lin J, Cong Y, Qiao G. CD21 lo/medCD27 + proinflammatory B cells are enriched in breast cancer patients and promote antitumor T cell responses. Exp Cell Res 2017; 361:149-154. [PMID: 29054490 DOI: 10.1016/j.yexcr.2017.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 10/07/2017] [Accepted: 10/16/2017] [Indexed: 01/22/2023]
Abstract
Breast cancer is a common malignancy and a major cause of death in women worldwide. The immunomodulatory role of B cells is being increasingly recognized in autoimmune diseases and cancers. In recent years, immunotherapeutic strategies that upregulate the patient's own antitumor T cell responses have shown promise in treating solid tumors and are being developed for breast cancer. In this study, we discovered that the B cells in breast cancer patients were enriched with interferon (IFN)-γ-expressing cells and presented high potency for IFN-γ production. These IFN-γ-expressing B cells were enriched in, but did not completely overlap with, the CD21lo/medCD27+IgM-IgD-IgG+IgA- B cell subset, which was consistent with IgG-expressing memory B cells. Compared to CD27+IgG- B cells, the CD27+IgG+ B cells expressed significantly higher IFN-γ expression. Given that B cells demonstrate important antigen-presenting function to T cells, we incubated CD27+IgG- B cells and CD27+IgG+ B cells with autologous CD4+ T cells. Compared to the CD4+ T cells that were incubated with CD27+IgG- B cells, the CD4+ T cells that were incubated with CD27+IgG+ B cells presented significantly higher TBX21 and lower FOXP3 expression, suggesting that the CD27+IgG+ B cells, but not the CD27+IgG- B cells, promoted Th1 and suppressed regulatory T cell responses. IFN-γ-expressing B cells were further enriched in the intratumoral environment of breast cancer patients. Together, we discovered that breast cancer patients presented an upregulation of IFN-γ-expressing proinflammatory B cells with the potency to promote Th1 responses.
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Affiliation(s)
- Shiguang Zhu
- Department of Breast Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Xingmiao Wang
- Department of Breast Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Ji Wang
- Department of Breast Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China.
| | - Jun Lin
- Department of Breast Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Yizi Cong
- Department of Breast Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China
| | - Guangdong Qiao
- Department of Breast Surgery, Yantai Yuhuangding Hospital, Yantai, Shandong, China
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195
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den Hartog G, van Osch TLJ, Vos M, Meijer B, Savelkoul HFJ, van Neerven RJJ, Brugman S. BAFF augments IgA2 and IL-10 production by TLR7/8 stimulated total peripheral blood B cells. Eur J Immunol 2017; 48:283-292. [PMID: 28921509 PMCID: PMC5836859 DOI: 10.1002/eji.201646861] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 08/31/2017] [Accepted: 09/12/2017] [Indexed: 12/31/2022]
Abstract
Class‐switching of B cells to IgA can be induced via both T‐cell‐dependent and T‐cell‐independent mechanisms. IgA is most predominantly produced mucosally and is important for combating infections and allergies. In contrast to mice, humans have two forms of IgA; IgA1 and IgA2 with diverse tissue distribution. In early life, IgA levels might be sub‐optimal especially during the fall season when bacterial and viral infections are more common. Therefore, we investigated using human B cells whether T‐cell‐independent factors ‐promoting cell survival, class switching and immunoglobulin secretion‐ BAFF, APRIL, IL‐10 and retinoic acid can boost IgA production in the context of viral or bacterial infection. To this end total and naive peripheral blood B cells were stimulated with these factors for 6 days in the presence or absence of TLR7/8 agonist R848 (mimicking viral infection) or TLR9 agonist CpG‐ODN (mimicking bacterial infection). We show that BAFF significantly augments IgA2 production in TLR7/8 stimulated mature, but not naïve B cells. In addition, BAFF augments IL‐10 production and viability in TLR7/8 and TLR9 stimulated mature B cells. These data warrant further investigation of its role in immune regulation both in the periphery and mucosal tissues in early life or during disease.
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Affiliation(s)
- Gerco den Hartog
- Animal Sciences Group, Cell Biology and Immunology group, Wageningen University, the Netherlands.,Centre for Immunology of Infectious Diseases, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Thijs L J van Osch
- Animal Sciences Group, Cell Biology and Immunology group, Wageningen University, the Netherlands
| | - Martijn Vos
- Animal Sciences Group, Cell Biology and Immunology group, Wageningen University, the Netherlands
| | - Ben Meijer
- Animal Sciences Group, Cell Biology and Immunology group, Wageningen University, the Netherlands
| | - Huub F J Savelkoul
- Animal Sciences Group, Cell Biology and Immunology group, Wageningen University, the Netherlands
| | - R J Joost van Neerven
- Animal Sciences Group, Cell Biology and Immunology group, Wageningen University, the Netherlands.,FrieslandCampina, Amersfoort, the Netherlands
| | - Sylvia Brugman
- Animal Sciences Group, Cell Biology and Immunology group, Wageningen University, the Netherlands
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196
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Taher TE, Bystrom J, Ong VH, Isenberg DA, Renaudineau Y, Abraham DJ, Mageed RA. Intracellular B Lymphocyte Signalling and the Regulation of Humoral Immunity and Autoimmunity. Clin Rev Allergy Immunol 2017; 53:237-264. [PMID: 28456914 PMCID: PMC5597704 DOI: 10.1007/s12016-017-8609-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
B lymphocytes are critical for effective immunity; they produce antibodies and cytokines, present antigens to T lymphocytes and regulate immune responses. However, because of the inherent randomness in the process of generating their vast repertoire of antigen-specific receptors, B cells can also cause diseases through recognizing and reacting to self. Therefore, B lymphocyte selection and responses require tight regulation at multiple levels and at all stages of their development and activation to avoid diseases. Indeed, newly generated B lymphocytes undergo rigorous tolerance mechanisms in the bone marrow and, subsequently, in the periphery after their migration. Furthermore, activation of mature B cells is regulated through controlled expression of co-stimulatory receptors and intracellular signalling thresholds. All these regulatory events determine whether and how B lymphocytes respond to antigens, by undergoing apoptosis or proliferation. However, defects that alter regulated co-stimulatory receptor expression or intracellular signalling thresholds can lead to diseases. For example, autoimmune diseases can result from altered regulation of B cell responses leading to the emergence of high-affinity autoreactive B cells, autoantibody production and tissue damage. The exact cause(s) of defective B cell responses in autoimmune diseases remains unknown. However, there is evidence that defects or mutations in genes that encode individual intracellular signalling proteins lead to autoimmune diseases, thus confirming that defects in intracellular pathways mediate autoimmune diseases. This review provides a synopsis of current knowledge of signalling proteins and pathways that regulate B lymphocyte responses and how defects in these could promote autoimmune diseases. Most of the evidence comes from studies of mouse models of disease and from genetically engineered mice. Some, however, also come from studying B lymphocytes from patients and from genome-wide association studies. Defining proteins and signalling pathways that underpin atypical B cell response in diseases will help in understanding disease mechanisms and provide new therapeutic avenues for precision therapy.
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Affiliation(s)
- Taher E Taher
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Jonas Bystrom
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Voon H Ong
- Centre for Rheumatology and Connective Tissue Diseases, Royal Free Hospital, University College London, London, UK
| | | | - Yves Renaudineau
- Immunology Laboratory, University of Brest Medical School, Brest, France
| | - David J Abraham
- Centre for Rheumatology and Connective Tissue Diseases, Royal Free Hospital, University College London, London, UK
| | - Rizgar A Mageed
- Centre for Experimental Medicine and Rheumatology, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK.
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197
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IL-4-producing B cells regulate T helper cell dichotomy in type 1- and type 2-controlled diseases. Proc Natl Acad Sci U S A 2017; 114:E8430-E8439. [PMID: 28916732 DOI: 10.1073/pnas.1708125114] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Interleukin-4 (IL-4)-induced T helper (Th) 2 cells promote susceptibility to the protozoan parasite Leishmania major, while conferring immunity to the intestinal trematode Schistosoma mansoni Here, we report that abrogation of IL-4 receptor alpha (IL-4Rα) signaling on B cells in BALB/c mice (mb1creIL-4Rα-/lox) transformed nonhealer BALB/c to a healer phenotype with an early type 1 and dramatically reduced type 2 immune response and an absence of ulceration and necrosis during cutaneous leishmaniasis. From adoptive reconstitution and mixed bone-marrow chimera studies in B cell-deficient (µMT) mice, we reveal a central role for B cell-derived IL-4 and IL-4Rα in the optimal induction of the susceptible type 2 phenotype to L. major infection. We further demonstrate that the absence of IL-4Rα signaling on B cells exacerbated S. mansoni-induced mortality and pathology in BALB/c mice, due to a diminished type 2 immune response. In both disease models, IL-4Rα-responsive B cells displayed increased IL-4 production as early as day 1 after infection. Together, these results demonstrate that IL-4-producing and IL-4Rα-responsive B cells are critical in regulating and assisting early T helper dichotomy toward Th2 responses, which are detrimental in cutaneous leishmaniasis but beneficial in acute schistosomiasis.
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Wypych TP, Marzi R, Wu GF, Lanzavecchia A, Sallusto F. Role of B cells in T H cell responses in a mouse model of asthma. J Allergy Clin Immunol 2017; 141:1395-1410. [PMID: 28889953 DOI: 10.1016/j.jaci.2017.09.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 06/22/2017] [Accepted: 09/01/2017] [Indexed: 01/24/2023]
Abstract
BACKGROUND The importance of B lymphocytes to present antigens for antibody production is well documented. In contrast, very little is known about their capacity to influence CD4+ T-cell activation during a primary or secondary response to allergens. OBJECTIVE Using mouse models of asthma, we investigated the role of B cells as antigen-presenting cells in priming and maintenance of TH cell responses. METHODS Mice were immunized through the intranasal route with house dust mite (HDM) extract derived from Dermatophagoides pteronyssinus. B cells were depleted in HDM-sensitized animals to investigate the importance of B cells in maintenance of the allergic response. B cells were depleted before HDM sensitization to investigate the role of B cells in T-cell priming; furthermore, HDM sensitization was performed in mice with MHC class II expression restricted to the B-cell lineage. RESULTS We found that B cells serve as potent antigen-presenting cells ex vivo and restimulate in vivo-primed HDM-specific TH cells. HDM antigens were taken up by B cells independently of B-cell receptor specificity, indicating that HDM uptake and antigen presentation to CD4+ T cells is not restricted to rare B cells carrying HDM-specific B cell receptors. B-cell depletion before HDM challenge in HDM-sensitized mice resulted in a dramatic reduction of allergic response, indicating the role of B cells in amplification of TH2 responses. In contrast, HDM sensitization of mice in which MHC class II expression was restricted to B cells revealed the inability of these cells to prime TH2 responses but highlighted their unexpected role in priming TH1 and TH17 responses. CONCLUSION Collectively, these data reveal new mechanisms leading to initiation and exacerbation of the allergic response that might have implications for designing new therapeutic strategies to combat HDM allergy.
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Affiliation(s)
- Tomasz Piotr Wypych
- Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland; Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland.
| | - Roberta Marzi
- Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland
| | - Gregory F Wu
- Department of Neurology, Washington University, St Louis, Mo
| | - Antonio Lanzavecchia
- Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland; Institute of Microbiology, ETH Zürich, Zurich, Switzerland
| | - Federica Sallusto
- Institute for Research in Biomedicine, Università della Svizzera italiana, Bellinzona, Switzerland.
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199
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Qian L, Chen W, Wang S, Liu Y, Jia X, Fu Y, Gong W, Tian F. FcγRIIb attenuates TLR4‑mediated NF‑κB signaling in B cells. Mol Med Rep 2017; 16:5693-5698. [PMID: 28849025 DOI: 10.3892/mmr.2017.7269] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 06/28/2017] [Indexed: 11/05/2022] Open
Abstract
Toll‑like receptors (TLRs) serve a vital role in activating the innate immune system by sensing conserved microbial products. Fc γ receptor IIb (FcγRIIb), the inhibitory Fc receptor, exerts its immune regulatory functions by binding to the immunoglobulin G Fc domain. Although the individual roles of TLRs and FcγRIIb have been studied intensively, the cross‑talk between FcγRIIb and TLR4 on B cells remains unknown. The present study demonstrated that FcγRIIb ligation by the immune complex (IC) attenuated the TLR4‑triggered nuclear factor (NF)‑κΒ activation, and decreased the release of interleukin (IL)‑6 from B cells, via enhancing LYN proto‑oncogene (Lyn) phosphorylation. In addition, IC treatment protected mice from lethal endotoxic shock. Accordingly, IC decreased the LPS‑induced serum levels of IL‑6, as well as intracellular IL‑6 production in B cells in vivo. However, these protective and inhibitory effects of IC were not observed in FcγRIIb‑/‑ mice. In conclusion, the present data demonstrated that FcγRIIb inhibited TLR4 signaling in B cells by activating Lyn phosphorylation and by inhibiting NF‑κΒ signaling. The present study elucidated the mechanism associated with the TLR4 and FcγRIIb cross‑talk in B cells.
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Affiliation(s)
- Li Qian
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Wenyan Chen
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Shaoqing Wang
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Yang Liu
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Xiaoqin Jia
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Yi Fu
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Weijuan Gong
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
| | - Fang Tian
- Department of Immunology, School of Medicine, Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China
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Svensson A, Patzi Churqui M, Schlüter K, Lind L, Eriksson K. Maturation-dependent expression of AIM2 in human B-cells. PLoS One 2017; 12:e0183268. [PMID: 28809949 PMCID: PMC5557365 DOI: 10.1371/journal.pone.0183268] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Accepted: 08/01/2017] [Indexed: 02/01/2023] Open
Abstract
Intracellular DNA- and RNA-sensing receptors, such as the IFN-inducible protein Absent in Melanoma 2 (AIM2), serve as host sensors against a wide range of infections. Immune sensing and inflammasome activation by AIM2 has been implicated in innate antiviral recognition in many experimental systems using cell-lines and animal models. However, little is known about the expression and function of AIM2 in freshly isolated human cells. In this study we investigated the expression of AIM2 in different cell types derived from human cord and adult peripheral blood, in steady state and following in vitro-activation. Adult but not cord blood B-cells expressed high levels of AIM2 mRNA at steady state. In adults, AIM2 was primarily expressed in mature memory CD27+ B-cells. Both adult and cord blood derived B-cells could induce their transcription of AIM2 mRNA in response to type II IFN but not type I IFN or the AIM2 ligand poly dA:dT. Upon B-cell receptor stimulation, B-cells from adult blood expressed reduced levels of AIM2 mRNA. In addition, we show that adult B-cells were able to release IL-1β upon stimulation with synthetic DNA. We conclude that functional AIM2 is preferentially expressed in adult human CD27+ B-cells, but is absent in cord blood mononuclear cells.
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Affiliation(s)
- Alexandra Svensson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- * E-mail:
| | - Marianela Patzi Churqui
- Department of Rheumatology and Inflammation Research, Institute of Medicine, the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Virology, Immunity and Infection Unit, SELADIS institute, Biochemistry and Pharmacy Faculty, Universidad Mayor de San Andres, La Paz, Bolivia
| | - Kerstin Schlüter
- Department of Rheumatology and Inflammation Research, Institute of Medicine, the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Liza Lind
- Department of Rheumatology and Inflammation Research, Institute of Medicine, the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Kristina Eriksson
- Department of Rheumatology and Inflammation Research, Institute of Medicine, the Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
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