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de Oliveira CGN, Perez EC, Alvares-Saraiva AM, Lallo MA. CD8 T lymphocytes from B-1 cell-deficient mice down-regulates fungicidal activity of macrophages challenged with E. Cuniculi. Immunobiology 2024; 229:152827. [PMID: 38878483 DOI: 10.1016/j.imbio.2024.152827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 06/03/2024] [Accepted: 06/11/2024] [Indexed: 06/23/2024]
Abstract
BACKGROUND Encephalitozoon cuniculi is an opportunistic intracellular pathogen that establishes a balanced relationship with immunocompetent individuals depending on the activity of their CD8+ T cells lymphocytes. However, lower resistance to experimental infection with E. cuniculi was found in B-1 deficient mice (Xid), besides increased the number of CD8 T lymphocytes. Here, we evaluated the profile of CD8+ T lymphocytes from Balb/c wild-type (WT) or Balb/c Xid mice (with B-1 cell deficiency) on the microbicidal activity of macrophages challenged with E. cuniculi. METHODS Naïve CD8 T lymphocytes from WT or Xid mice uninfected and primed CD8 T lymphocytes from WT or Xid mice infected with E cuniculi were co-cultured with macrophages previously challenged with E. cuniculi. We evaluated macrophages viability and microbicidal activity, and CD8 T lymphocytes viability and presence of activating molecules (CD62L, CD69, and CD107a). RESULTS Macrophages co-cultured with naïve CD8 T lymphocytes from WT demonstrated high microbicidal activity. Naïve CD8 T lymphocytes obtained from WT mice had a higher expression of CD69 and LAMP-1-activating molecules compared to Xid CD8+ T lymphocytes. Primed CD8 T lymphocytes from Xid mice proliferated more than those from WT mice, however, when the expression of the activating molecule CD69 associated with the expression of CD62L was kept low. In conclusion, naïve CD8+ T lymphocytes from Xid mice, deficient in B-1 cells, they had reduced expression of activation molecules and cytotoxic activity.
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Affiliation(s)
| | - Elizabeth Cristina Perez
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua Dr Bacelar 1212, CEP 04026002 São Paulo, SP, Brazil
| | - Anuska Marcelino Alvares-Saraiva
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua Dr Bacelar 1212, CEP 04026002 São Paulo, SP, Brazil
| | - Maria Anete Lallo
- Programa de Pós-Graduação em Patologia Ambiental e Experimental, Universidade Paulista - Unip, Rua Dr Bacelar 1212, CEP 04026002 São Paulo, SP, Brazil.
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Tan C, Reilly B, Ma G, Murao A, Jha A, Aziz M, Wang P. Neutrophils disrupt B-1a cell homeostasis by targeting Siglec-G to exacerbate sepsis. Cell Mol Immunol 2024; 21:707-722. [PMID: 38789529 PMCID: PMC11214631 DOI: 10.1038/s41423-024-01165-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 04/11/2024] [Indexed: 05/26/2024] Open
Abstract
B-1a cells, an innate-like cell population, are crucial for pathogen defense and the regulation of inflammation through their release of natural IgM and IL-10. In sepsis, B-1a cell numbers are decreased in the peritoneal cavity as they robustly migrate to the spleen. Within the spleen, migrating B-1a cells differentiate into plasma cells, leading to alterations in their original phenotype and functionality. We discovered a key player, sialic acid-binding immunoglobulin-like lectin-G (Siglec-G), which is expressed predominantly on B-1a cells and negatively regulates B-1a cell migration to maintain homeostasis. Siglec-G interacts with CXCR4/CXCL12 to modulate B-1a cell migration. Neutrophils aid B-1a cell migration via neutrophil elastase (NE)-mediated Siglec-G cleavage. Human studies revealed increased NE expression in septic patients. We identified an NE cleavage sequence in silico, leading to the discovery of a decoy peptide that protects Siglec-G, preserves peritoneal B-1a cells, reduces inflammation, and enhances sepsis survival. The role of Siglec-G in inhibiting B-1a cell migration to maintain their inherent phenotype and function is compromised by NE in sepsis, offering valuable insights into B-1a cell homeostasis. Employing a small decoy peptide to prevent NE-mediated Siglec-G cleavage has emerged as a promising strategy to sustain peritoneal B-1a cell homeostasis, alleviate inflammation, and ultimately improve outcomes in sepsis patients.
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Affiliation(s)
- Chuyi Tan
- Center for Immunology and Inflammation, the Feinstein Institutes for Medical Research, Manhasset, New York, USA
- Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Bridgette Reilly
- Center for Immunology and Inflammation, the Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Gaifeng Ma
- Center for Immunology and Inflammation, the Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Atsushi Murao
- Center for Immunology and Inflammation, the Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Alok Jha
- Center for Immunology and Inflammation, the Feinstein Institutes for Medical Research, Manhasset, New York, USA
| | - Monowar Aziz
- Center for Immunology and Inflammation, the Feinstein Institutes for Medical Research, Manhasset, New York, USA.
- Departments of Surgery and Molecular Medicine, Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA.
| | - Ping Wang
- Center for Immunology and Inflammation, the Feinstein Institutes for Medical Research, Manhasset, New York, USA.
- Departments of Surgery and Molecular Medicine, Zucker School of Medicine at Hofstra/Northwell, Manhasset, New York, USA.
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Zhong X, Peddada N, Moresco JJ, Wang J, Jiang Y, Rios JJ, Moresco EMY, Choi JH, Beutler B. Viable mutations of mouse midnolin suppress B cell malignancies. J Exp Med 2024; 221:e20232132. [PMID: 38625151 PMCID: PMC11022886 DOI: 10.1084/jem.20232132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 02/20/2024] [Accepted: 03/28/2024] [Indexed: 04/17/2024] Open
Abstract
In a genetic screen, we identified two viable missense alleles of the essential gene Midnolin (Midn) that were associated with reductions in peripheral B cells. Causation was confirmed in mice with targeted deletion of four of six MIDN protein isoforms. MIDN was expressed predominantly in lymphocytes where it augmented proteasome activity. We showed that purified MIDN directly stimulated 26S proteasome activity in vitro in a manner dependent on the ubiquitin-like domain and a C-terminal region. MIDN-deficient B cells displayed aberrant activation of the IRE-1/XBP-1 pathway of the unfolded protein response. Partial or complete MIDN deficiency strongly suppressed Eμ-Myc-driven B cell leukemia and the antiapoptotic effects of Eμ-BCL2 on B cells in vivo and induced death of Sp2/0 hybridoma cells in vitro, but only partially impaired normal lymphocyte development. Thus, MIDN is required for proteasome activity in support of normal lymphopoiesis and is essential for malignant B cell proliferation over a broad range of differentiation states.
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Affiliation(s)
- Xue Zhong
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Nagesh Peddada
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - James J. Moresco
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jianhui Wang
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Yiao Jiang
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jonathan J. Rios
- Center for Pediatric Bone Biology and Translational Research, Scottish Rite for Children, Dallas, TX, USA
- McDermott Center for Human Growth and Development, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Eva Marie Y. Moresco
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jin Huk Choi
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Bruce Beutler
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, TX, USA
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Santana-Sánchez P, Vaquero-García R, Legorreta-Haquet MV, Chávez-Sánchez L, Chávez-Rueda AK. Hormones and B-cell development in health and autoimmunity. Front Immunol 2024; 15:1385501. [PMID: 38680484 PMCID: PMC11045971 DOI: 10.3389/fimmu.2024.1385501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Accepted: 03/29/2024] [Indexed: 05/01/2024] Open
Abstract
The development of B cells into antibody-secreting plasma cells is central to the adaptive immune system as they induce protective and specific antibody responses against invading pathogens. Various studies have shown that, during this process, hormones can play important roles in the lymphopoiesis, activation, proliferation, and differentiation of B cells, and depending on the signal given by the receptor of each hormone, they can have a positive or negative effect. In autoimmune diseases, hormonal deregulation has been reported to be related to the survival, activation and/or differentiation of autoreactive clones of B cells, thus promoting the development of autoimmunity. Clinical manifestations of autoimmune diseases have been associated with estrogens, prolactin (PRL), and growth hormone (GH) levels. However, androgens, such as testosterone and progesterone (P4), could have a protective effect. The objective of this review is to highlight the links between different hormones and the immune response mediated by B cells in the etiopathogenesis of systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and multiple sclerosis (MS). The data collected provide insights into the role of hormones in the cellular, molecular and/or epigenetic mechanisms that modulate the B-cell response in health and disease.
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Affiliation(s)
| | | | | | | | - Adriana Karina Chávez-Rueda
- Unidad de Investigación Médica en Inmunología, Unidad Médica de Alta Especialidad (UMAE) Hospital de Pediatría, Centro Médico Nacional Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México (CDMX), Mexico
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Maslanka J, Torres G, Londregan J, Goldman N, Silberman D, Somerville J, Riggs JE. Loss of B1 and marginal zone B cells during ovarian cancer. Cell Immunol 2024; 395-396:104788. [PMID: 38000306 PMCID: PMC10842900 DOI: 10.1016/j.cellimm.2023.104788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/31/2023] [Accepted: 11/20/2023] [Indexed: 11/26/2023]
Abstract
Recent advances in immunotherapy have not addressed the challenge presented by ovarian cancer. Although the peritoneum is an "accessible" locus for this disease there has been limited characterization of the immunobiology therein. We investigated the ID8-C57BL/6J ovarian cancer model and found marked depletion of B1 cells from the ascites of the peritoneal cavity. There was also selective loss of the B1 and marginal zone B cell subsets from the spleen. Immunity to antigens that activate these subsets validated their loss rather than relocation. A marked influx of myeloid-derived suppressor cells correlated with B cell subset depletion. These observations are discussed in the context of the housekeeping burden placed on innate B cells during ovarian cancer and to foster consideration of B cell biology in therapeutic strategies to address this challenge.
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Affiliation(s)
- Jeffrey Maslanka
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - Gretel Torres
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | | | - Naomi Goldman
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - Daniel Silberman
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - John Somerville
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA
| | - James E Riggs
- Department of Biology, Rider University, Lawrenceville, NJ 08648, USA.
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Haas KM. Noncanonical B Cells: Characteristics of Uncharacteristic B Cells. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:1257-1265. [PMID: 37844278 PMCID: PMC10593487 DOI: 10.4049/jimmunol.2200944] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 05/12/2023] [Indexed: 10/18/2023]
Abstract
B lymphocytes were originally described as a cell type uniquely capable of secreting Abs. The importance of T cell help in Ab production was revealed soon afterward. Following these seminal findings, investigators made great strides in delineating steps in the conventional pathway that B cells follow to produce high-affinity Abs. These studies revealed generalized, or canonical, features of B cells that include their developmental origin and paths to maturation, activation, and differentiation into Ab-producing and memory cells. However, along the way, examples of nonconventional B cell populations with unique origins, age-dependent development, tissue localization, and effector functions have been revealed. In this brief review, features of B-1a, B-1b, marginal zone, regulatory, killer, NK-like, age-associated, and atypical B cells are discussed. Emerging work on these noncanonical B cells and functions, along with the study of their significance for human health and disease, represents an exciting frontier in B cell biology.
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Affiliation(s)
- Karen M Haas
- Department of Microbiology and Immunology, Wake Forest University School of Medicine, Winston-Salem, NC
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Zheng H, Chen Y, Luo Q, Zhang J, Huang M, Xu Y, Huo D, Shan W, Tie R, Zhang M, Qian P, Huang H. Generating hematopoietic cells from human pluripotent stem cells: approaches, progress and challenges. CELL REGENERATION (LONDON, ENGLAND) 2023; 12:31. [PMID: 37656237 PMCID: PMC10474004 DOI: 10.1186/s13619-023-00175-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/13/2023] [Indexed: 09/02/2023]
Abstract
Human pluripotent stem cells (hPSCs) have been suggested as a potential source for the production of blood cells for clinical application. In two decades, almost all types of blood cells can be successfully generated from hPSCs through various differentiated strategies. Meanwhile, with a deeper understanding of hematopoiesis, higher efficiency of generating progenitors and precursors of blood cells from hPSCs is achieved. However, how to generate large-scale mature functional cells from hPSCs for clinical use is still difficult. In this review, we summarized recent approaches that generated both hematopoietic stem cells and mature lineage cells from hPSCs, and remarked their efficiency and mechanisms in producing mature functional cells. We also discussed the major challenges in hPSC-derived products of blood cells and provided some potential solutions. Our review summarized efficient, simple, and defined methodologies for developing good manufacturing practice standards for hPSC-derived blood cells, which will facilitate the translation of these products into the clinic.
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Affiliation(s)
- Haiqiong Zheng
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Yijin Chen
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Qian Luo
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Jie Zhang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Mengmeng Huang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Yulin Xu
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Dawei Huo
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Wei Shan
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Ruxiu Tie
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China
| | - Meng Zhang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China.
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China.
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China.
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China.
| | - Pengxu Qian
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China.
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China.
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China.
- Center for Stem Cell and Regenerative Medicine and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.
| | - He Huang
- Bone Marrow Transplantation Center, the First Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang University, Hangzhou, 310012, China.
- Liangzhu Laboratory, Zhejiang University Medical Center, 1369 West Wenyi Road, Hangzhou, 311121, China.
- Institute of Hematology, Zhejiang University, Hangzhou, 310012, China.
- Zhejiang Province Engineering Laboratory for Stem Cell and Immunity Therapy, Hangzhou, 310012, China.
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Kang M, Yadav MK, Mbanefo EC, Yu CR, Egwuagu CE. IL-27-containing exosomes secreted by innate B-1a cells suppress and ameliorate uveitis. Front Immunol 2023; 14:1071162. [PMID: 37334383 PMCID: PMC10272713 DOI: 10.3389/fimmu.2023.1071162] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Accepted: 05/18/2023] [Indexed: 06/20/2023] Open
Abstract
Introduction IL-27 is a heterodimeric cytokine composed of Ebi3 and IL-27p28 and can exert proinflammatory or immune suppressive effects depending on the physiological context. Ebi3 does not contain membrane-anchoring motifs, suggesting that it is a secreted protein while IL-27p28 is poorly secreted. How IL-27p28 and Ebi3 dimerize in-vivo to form biologically active IL-27 is unknown. Major impediment to clinical use of IL-27 derives from difficulty of determining exact amount of bioavailable heterodimeric IL-27 needed for therapy. Methods To understand how IL-27 mediates immune suppression, we characterized an innate IL-27-producing B-1a regulatory B cell population (i27-Breg) and mechanisms i27-Bregs utilize to suppress neuroinflammation in mouse model of uveitis. We also investigated biosynthesis of IL-27 and i27-Breg immunobiology by FACS, immunohistochemical and confocal microscopy. Results Contrary to prevailing view that IL-27 is a soluble cytokine, we show that i27-Bregs express membrane-bound IL-27. Immunohistochemical and confocal analyses co-localized expression of IL-27p28 at the plasma membrane in association with CD81 tetraspanin, a BCR-coreceptor protein and revealed that IL-27p28 is a transmembrane protein in B cells. Most surprising, we found that i27-Bregs secrete IL-27-containing exosomes (i27-exosomes) and adoptive transfer of i27-exosomes suppressed uveitis by antagonizing Th1/Th17 cells, up-regulating inhibitory-receptors associated with T-cell exhaustion while inducing Treg expansion. Discussion Use of i27-exosomes thus obviates the IL-27 dosing problem, making it possible to determine bioavailable heterodimeric IL-27 needed for therapy. Moreover, as exosomes readily cross the blood-retina-barrier and no adverse effects were observed in mice treated with i27-exosome, results of this study suggest that i27-exosomes might be a promising therapeutic approach for CNS autoimmune diseases.
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Kobayashi M, Yoshimoto M. Multiple waves of fetal-derived immune cells constitute adult immune system. Immunol Rev 2023; 315:11-30. [PMID: 36929134 PMCID: PMC10754384 DOI: 10.1111/imr.13192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
It has been over three decades since Drs. Herzenberg and Herzenberg proposed the layered immune system hypothesis, suggesting that different types of stem cells with distinct hematopoietic potential produce specific immune cells. This layering of immune system development is now supported by recent studies showing the presence of fetal-derived immune cells that function in adults. It has been shown that various immune cells arise at different embryonic ages via multiple waves of hematopoiesis from special endothelial cells (ECs), referred to as hemogenic ECs. However, it remains unknown whether these fetal-derived immune cells are produced by hematopoietic stem cells (HSCs) during the fetal to neonatal period. To address this question, many advanced tools have been used, including lineage-tracing mouse models, cellular barcoding techniques, clonal assays, and transplantation assays at the single-cell level. In this review, we will review the history of the search for the origins of HSCs, B-1a progenitors, and mast cells in the mouse embryo. HSCs can produce both B-1a and mast cells within a very limited time window, and this ability declines after embryonic day (E) 14.5. Furthermore, the latest data have revealed that HSC-independent adaptive immune cells exist in adult mice, which implies more complicated developmental pathways of immune cells. We propose revised road maps of immune cell development.
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Affiliation(s)
- Michihiro Kobayashi
- Center for Stem Cell and Regenerative Medicine, Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Momoko Yoshimoto
- Center for Stem Cell and Regenerative Medicine, Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, Texas, USA
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An Igh distal enhancer modulates antigen receptor diversity by determining locus conformation. Nat Commun 2023; 14:1225. [PMID: 36869028 PMCID: PMC9984487 DOI: 10.1038/s41467-023-36414-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 01/31/2023] [Indexed: 03/05/2023] Open
Abstract
The mouse Igh locus is organized into a developmentally regulated topologically associated domain (TAD) that is divided into subTADs. Here we identify a series of distal VH enhancers (EVHs) that collaborate to configure the locus. EVHs engage in a network of long-range interactions that interconnect the subTADs and the recombination center at the DHJH gene cluster. Deletion of EVH1 reduces V gene rearrangement in its vicinity and alters discrete chromatin loops and higher order locus conformation. Reduction in the rearrangement of the VH11 gene used in anti-PtC responses is a likely cause of the observed reduced splenic B1 B cell compartment. EVH1 appears to block long-range loop extrusion that in turn contributes to locus contraction and determines the proximity of distant VH genes to the recombination center. EVH1 is a critical architectural and regulatory element that coordinates chromatin conformational states that favor V(D)J rearrangement.
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Ferdinandov D, Kostov V, Hadzhieva M, Shivarov V, Petrov P, Bussarsky A, Pashov AD. Reactivity Graph Yields Interpretable IgM Repertoire Signatures as Potential Tumor Biomarkers. Int J Mol Sci 2023; 24:ijms24032597. [PMID: 36768923 PMCID: PMC9917253 DOI: 10.3390/ijms24032597] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/24/2023] [Accepted: 01/26/2023] [Indexed: 01/31/2023] Open
Abstract
Combining adaptive and innate immunity induction modes, the repertoire of immunoglobulin M (IgM) can reflect changes in the internal environment including malignancies. Previously, it was shown that a mimotope library reflecting the public IgM repertoire of healthy donors (IgM IgOme) can be mined for efficient probes of tumor biomarker antibody reactivities. To better explore the interpretability of this approach for IgM, solid tumor-related profiles of IgM reactivities to linear epitopes of actual tumor antigens and viral epitopes were studied. The probes were designed as oriented planar microarrays of 4526 peptide sequences (as overlapping 15-mers) derived from 24 tumor-associated antigens and 209 cancer-related B cell epitopes from 30 viral antigens. The IgM reactivity in sera from 21 patients with glioblastoma multiforme, brain metastases of other tumors, and non-tumor-bearing neurosurgery patients was thus probed in a proof-of-principle study. A graph representation of the binding data was developed, which mapped the cross-reactivity of the mixture of IgM (poly)specificities, delineating different antibody footprints in the features of the graph-neighborhoods and cliques. The reactivity graph mapped the major features of the IgM repertoire such as the magnitude of the reactivity (titer) and major cross-reactivities, which correlated with blood group reactivity, non-self recognition, and even idiotypic specificities. A correlation between an aspect of this image of the IgM IgOme, namely, small cliques reflecting rare self-reactivities and the capacity of subsets of the epitopes to separate the diagnostic groups studied was found. In this way, the graph representation helped the feature selection in its filtering step and provided reduced feature sets, which, after recursive feature elimination, produced a classifier containing 51 peptide reactivities separating the three diagnostic groups with an unexpected efficiency. Thus, IgM IgOme approaches to repertoire studies is greatly augmented when self/viral antigens are used and the data are represented as a reactivity graph. This approach is most general, and if it is applicable to tumors in immunologically privileged sites, it can be applied to any solid tumors, for instance, breast or lung cancer.
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Affiliation(s)
- Dilyan Ferdinandov
- Clinic of Neurosurgery, St. Ivan Rilski University Hospital, 1431 Sofia, Bulgaria
| | - Viktor Kostov
- Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Maya Hadzhieva
- Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Velizar Shivarov
- Department of Experimental Research, Medical University—Pleven, 5800 Pleven, Bulgaria
| | - Peter Petrov
- Institute of Mathematics and Informatics, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
| | - Assen Bussarsky
- Clinic of Neurosurgery, St. Ivan Rilski University Hospital, 1431 Sofia, Bulgaria
| | - Anastas Dimitrov Pashov
- Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria
- Correspondence:
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12
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Amendt T, Tybulewicz VLJ. Antidepressants cheer up hepatic B1 B cells: Hope for the treatment of autoimmune liver diseases? Front Immunol 2023; 13:1083173. [PMID: 36733387 PMCID: PMC9887017 DOI: 10.3389/fimmu.2022.1083173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/16/2022] [Indexed: 01/18/2023] Open
Affiliation(s)
- Timm Amendt
- Institute of Immunology, Ulm University, Ulm, Germany,*Correspondence: Timm Amendt,
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13
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Hiéronimus L, Huaux F. B-1 cells in immunotoxicology: Mechanisms underlying their response to chemicals and particles. FRONTIERS IN TOXICOLOGY 2023; 5:960861. [PMID: 37143777 PMCID: PMC10151831 DOI: 10.3389/ftox.2023.960861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 03/31/2023] [Indexed: 05/06/2023] Open
Abstract
Since their discovery nearly 40 years ago, B-1 cells have continued to challenge the boundaries between innate and adaptive immunity, as well as myeloid and lymphoid functions. This B-cell subset ensures early immunity in neonates before the development of conventional B (B-2) cells and respond to immune injuries throughout life. B-1 cells are multifaceted and serve as natural- and induced-antibody-producing cells, phagocytic cells, antigen-presenting cells, and anti-/pro-inflammatory cytokine-releasing cells. This review retraces the origin of B-1 cells and their different roles in homeostatic and infectious conditions before focusing on pollutants comprising contact-sensitivity-inducing chemicals, endocrine disruptors, aryl hydrocarbon receptor (AHR) ligands, and reactive particles.
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14
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Zhai S, Cao M, Zhou H, Zhu H, Xu T, Wang Y, Wang X, Cai Z. H3K36 methyltransferase NSD1 is essential for normal B1 and B2 cell development and germinal center formation. Front Immunol 2022; 13:959021. [PMID: 36532012 PMCID: PMC9750791 DOI: 10.3389/fimmu.2022.959021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 11/14/2022] [Indexed: 12/03/2022] Open
Abstract
B cells, which consist of two well-defined populations: B1 and B2 cells, which can produce antibodies that are essential for host protection against infections, through virus neutralization, opsonization and antibody-dependent cellular cytotoxicity. Epigenetic modifications, such as DNA methylation and histone modification could regulate immune cell differentiation and functions. In this study, we found a significant reduction of GC response in the B cell specific knockout of H3K36 methyltransferase NSD1 (Mb1-Cre+ NSD1fl/fl, NSD1B KO) mice compared with the wildtype control (Mb1-Cre+ NSD1+/+, NSD1B WT). We also demonstrated reduced production of high-affinity antibody, but increased production of low-affinity antibody in the NSD1B KO mice. Further analysis revealed that loss of NSD1 promoted the development of B1 cells by increasing the expression of Rap1b and Arid3a. In conclusion, our data suggest that NSD1 plays an important role in regulation the development of B1 and B2 cells, and the process of germinal center formation and high-affinity antibody production.
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Affiliation(s)
- Sulan Zhai
- Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases, Nanjing Medical University, Nanjing, China
| | - Min Cao
- Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases, Nanjing Medical University, Nanjing, China
| | - Han Zhou
- Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases, Nanjing Medical University, Nanjing, China,Reproductive Medicine Centre, Changzhou No. 2 People’s Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou, China
| | - Huamin Zhu
- Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases, Nanjing Medical University, Nanjing, China
| | - Tongchang Xu
- Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases, Nanjing Medical University, Nanjing, China
| | - Yuliang Wang
- Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases, Nanjing Medical University, Nanjing, China
| | - Xiaoming Wang
- Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases, Nanjing Medical University, Nanjing, China,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing, China,National Health Commission (NHC) Key Laboratory of Antibody Technique, Nanjing Medical University, Nanjing, China,*Correspondence: Xiaoming Wang, ; Zhenming Cai,
| | - Zhenming Cai
- Department of Immunology, Key Laboratory of Immune Microenvironment and Diseases, Nanjing Medical University, Nanjing, China,*Correspondence: Xiaoming Wang, ; Zhenming Cai,
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15
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Hagen M, Chakraborty T, Olson WJ, Heitz M, Hermann-Kleiter N, Kimpel J, Jenewein B, Pertoll J, Labi V, Rajewsky K, Derudder E. miR-142 favors naïve B cell residence in peripheral lymph nodes. Front Immunol 2022; 13:847415. [PMID: 36439112 PMCID: PMC9686386 DOI: 10.3389/fimmu.2022.847415] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 09/21/2022] [Indexed: 08/01/2023] Open
Abstract
B lymphocyte development proceeds through a well-ordered sequence of steps, leading to the formation of a sizeable mature B population recognizing a diversity of antigens. These latter cells are ultimately responsible for the production of antibodies upon immune challenges. The detection of threats to the organism is facilitated by the ability of naïve follicular B cells, the main subset of mature B cells in mice, to circulate between lymphoid tissues in search of their cognate antigens. miRNA-mediated fine-tuning of mRNA stability and translation participates in the optimal expression of genetic programs. This regulatory mechanism has been shown to contribute to B cell biology, although the role of individual miRNAs remains understudied. Here, we selectively inactivated the miR-142 locus in B cells. As a consequence, the mature B compartment was visibly perturbed, in agreement with work in miR-142 knockout mice. However, our strategy allowed us to identify roles for the miR-142 locus in B cell physiology obscured by the complexity of the immune phenotype in the null mutant mice. Thus, these miRNAs are necessary for the proper formation of the pre-B cell compartment during development. More remarkably, naïve follicular B cells demonstrated altered migratory properties upon conditional inactivation of the miR-142 locus. The latter mutant cells expressed reduced levels of the homing molecule CD62L. They also migrated more efficiently towards sphingosine-1-phosphate in vitro and displayed an increased abundance of the sphingosine-1-phosphate receptor 1, compatible with improved lymphocyte egress in vivo. In line with these observations, the ablation of the miR-142 locus in B cells caused a paucity of B cells in the lymph nodes. Mutant B cell accumulation in the latter tissues was also compromised upon transfer into a wild-type environment. These changes coincided with suboptimal levels of FOXO1, a positive regulator of CD62L transcription, in mutant B cells. Overall, our findings indicate contributions for the miR-142 locus in various aspects of the B cell life cycle. Notably, this locus appears to favor the establishment of the migratory behavior required for naïve follicular B cell patrolling activity.
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Affiliation(s)
- Magdalena Hagen
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
| | - Tirtha Chakraborty
- Program in Cellular and Molecular Medicine, Children’s Hospital, and Immune Disease Institute, Harvard Medical School, Boston, MA, United States
- Vor Biopharma, Cambridge, MA, United States
| | - William J. Olson
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
| | - Martin Heitz
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
| | - Natascha Hermann-Kleiter
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Janine Kimpel
- Institute of Virology, Department of Hygiene, Microbiology and Public Health, Medical University of Innsbruck, Innsbruck, Austria
| | - Brigitte Jenewein
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
| | - Johanna Pertoll
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
| | - Verena Labi
- Institute of Developmental Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Klaus Rajewsky
- Program in Cellular and Molecular Medicine, Children’s Hospital, and Immune Disease Institute, Harvard Medical School, Boston, MA, United States
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
| | - Emmanuel Derudder
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany
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16
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Ma C, Liu H, Yang S, Li H, Liao X, Kang Y. The emerging roles and therapeutic potential of B cells in sepsis. Front Pharmacol 2022; 13:1034667. [PMID: 36425582 PMCID: PMC9679374 DOI: 10.3389/fphar.2022.1034667] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/26/2022] [Indexed: 01/03/2024] Open
Abstract
Sepsis is a life-threatening syndrome caused by anomalous host response to infection. The pathogenesis of sepsis is complex, and immune dysfunction is the central link in its occurrence and development. The sepsis immune response is not a local and transient process but a complex and continuous process involving all major cell types of innate and adaptive immunity. B cells are traditionally studied for their ability to produce antibodies in the context of mediating humoral immunity. However, over the past few years, B cells have been increasingly recognized as key modulators of adaptive and innate immunity, and they can participate in immune responses by presenting antigens, producing cytokines, and modulating other immune cells. Recently, increasing evidence links B-cell dysfunction to mechanisms of immune derangement in sepsis, which has drawn attention to the powerful properties of this unique immune cell type in sepsis. Here, we reviewed the dynamic alterations of B cells and their novel roles in animal models and patients with sepsis, and provided new perspectives for therapeutic strategies targeting B cells in sepsis.
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Affiliation(s)
- Chengyong Ma
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hanrui Liu
- Development and Related Diseases of Women and Children Key Laboratory of Sichuan Province, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Shuo Yang
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Hong Li
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xuelian Liao
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Kang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
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17
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Lunderberg JM, Dutta S, Collier ARY, Lee JS, Hsu YM, Wang Q, Zheng W, Hao S, Zhang H, Feng L, Robson SC, Gao W, Riedel S. Pan-neutralizing, germline-encoded antibodies against SARS-CoV-2: Addressing the long-term problem of escape variants. Front Immunol 2022; 13:1032574. [DOI: 10.3389/fimmu.2022.1032574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 10/14/2022] [Indexed: 11/13/2022] Open
Abstract
Despite the initially reported high efficacy of vaccines directed against ancestral SARS-CoV-2, repeated infections in both unvaccinated and vaccinated populations remain a major global health challenge. Because of mutation-mediated immune escape by variants-of-concern (VOC), approved neutralizing antibodies (neutAbs) effective against the original strains have been rendered non-protective. Identification and characterization of mutation-independent pan-neutralizing antibody responses are therefore essential for controlling the pandemic. Here, we characterize and discuss the origins of SARS-CoV-2 neutAbs, arising from either natural infection or following vaccination. In our study, neutAbs in COVID-19 patients were detected using the combination of two lateral flow immunoassay (LFIA) tests, corroborated by plaque reduction neutralization testing (PRNT). A point-of-care neutAb LFIA, NeutraXpress™, was validated using serum samples from historical pre-COVID-19 negative controls, patients infected with other respiratory pathogens, and PCR-confirmed COVID-19 patients. Surprisingly, potent neutAb activity was mainly noted in patients generating both IgM and IgG against the Spike receptor-binding domain (RBD), in contrast to samples possessing anti-RBD IgG alone. We propose that low-affinity, high-avidity, germline-encoded natural IgM and subsequent generation of class-switched IgG may have an underappreciated role in cross-protection, potentially offsetting immune escape by SARS-CoV-2 variants. We suggest Reverse Vaccinology 3.0 to further exploit this innate-like defense mechanism. Our proposition has potential implications for immunogen design, and provides strategies to elicit pan-neutAbs from natural B1-like cells. Refinements in future immunization protocols might further boost long-term cross-protection, even at the mucosal level, against clinical manifestations of COVID-19.
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18
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Smirnova NF, Riemondy K, Bueno M, Collins S, Suresh P, Wang X, Patel KN, Cool C, Königshoff M, Sharma NS, Eickelberg O. Single-cell transcriptome mapping identifies a local, innate B cell population driving chronic rejection after lung transplantation. JCI Insight 2022; 7:156648. [PMID: 36134664 PMCID: PMC9675462 DOI: 10.1172/jci.insight.156648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Bronchiolitis obliterans syndrome (BOS) is the main reason for poor outcomes after lung transplantation (LTx). We and others have recently identified B cells as major contributors to BOS after LTx. The extent of B cell heterogeneity and the relative contributions of B cell subpopulations to BOS, however, remain unclear. Here, we provide a comprehensive analysis of cell population changes and their gene expression patterns during chronic rejection after orthotopic LTx in mice. Of 11 major cell types, Mzb1-expressing plasma cells (PCs) were the most prominently increased population in BOS lungs. These findings were validated in 2 different cohorts of human BOS after LTx. A Bhlhe41, Cxcr3, and Itgb1 triple-positive B cell subset, also expressing classical markers of the innate-like B-1 B cell population, served as the progenitor pool for Mzb1+ PCs. This subset accounted for the increase in IgG2c production within BOS lung grafts. A genetic lack of Igs decreased BOS severity after LTx. In summary, we provide a detailed analysis of cell population changes during BOS. IgG+ PCs and their progenitors — an innate B cell subpopulation — are the major source of local Ab production and a significant contributor to BOS after LTx.
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Affiliation(s)
- Natalia F Smirnova
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.,Institut des Maladies Métaboliques et Cardiovasculaires (I2MC) - INSERM U1297, University of Toulouse III, Toulouse, France
| | - Kent Riemondy
- RNA Bioscience Initiative, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Marta Bueno
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Susan Collins
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Pavan Suresh
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Xingan Wang
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Kapil N Patel
- Center for Advanced Lung Disease and Lung Transplantation, University of South Florida/Tampa General Hospital, Tampa, Florida, USA
| | - Carlyne Cool
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Melanie Königshoff
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Nirmal S Sharma
- Center for Advanced Lung Disease and Lung Transplantation, University of South Florida/Tampa General Hospital, Tampa, Florida, USA.,Division of Pulmonary & Critical Care, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Oliver Eickelberg
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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19
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Vidal AS, de Campos Reis NF, De Lorenzo BHP, Alvares-Saraiva AM, Xander P, Novaes E Brito RR. Impact of sleep restriction in B-1 cells activation and differentiation. Immunobiology 2022; 227:152280. [PMID: 36179431 DOI: 10.1016/j.imbio.2022.152280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 08/29/2022] [Accepted: 09/13/2022] [Indexed: 12/01/2022]
Abstract
B-1 lymphocytes are a subtype of B cells with functional and phenotypic features that differ from conventional B lymphocytes. These cells are mainly located in mice's pleural and peritoneal cavities and express unconventional B cell surface markers. B-1 cells participate in immunity by producing antibodies, cytokines, and chemokines and physically interacting with other immune cells. In addition, B-1 cells can differentiate into mononuclear phagocyte-like cells and phagocytize several pathogens. However, the activation and differentiation of B-1 cells are not entirely understood. It is known that several factors can influence B-1 cells, such as pathogens components and the immune response. This work aimed to evaluate the influence of chronic stress on B-1 cell activation and differentiation into phagocytes. The experimental sleep restriction was used as a stress model since the sleep alteration alters several immune cells' functions. Thus, mice were submitted to sleep restriction for 21 consecutive days, and the activation and differentiation of B-1 cells were analyzed. Our results demonstrated that B-1 cells initiated the differentiation process into mononuclear phagocytes after the period of sleep restriction. In addition, we detected a significant decrease in lymphoid lineage commitment factors (EBF, E2A, Blnk) (*P < 0.05) and an increase in the G-CSFR gene (related to the myeloid lineage commitment factor) (****P < 0.0001), as compared to control mice no submitted to sleep restriction. An increase in the co-stimulatory molecules CD80 and CD86 (**P < 0.01 and *P < 0.05, respectively) and a higher production of nitric oxide (NO) (*P < 0.05) and reactive oxygen species (ROS) (*P < 0.05) were also observed in B-1 cells from mice submitted to sleep restriction. Nevertheless, B-1 cells from sleep-restricted mice showed a significant reduction in the Toll-like receptors (TLR)-2, -6, and -9, and interleukine-10 (IL-10) cytokine expression (***P < 0.001) as compared to control. Sleep-restricted mice intraperitoneally infected withL. amazonensispromastigotes showed a reduction in the average internalized parasites (*P < 0.05) by B-1 cells. These findings suggest that sleep restriction interferes with B-1 lymphocyte activation and differentiation. In addition, b-1 cells assumed a more myeloid profile but with a lower phagocytic capacity in this stress condition.
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Affiliation(s)
- Andrey Sladkevicius Vidal
- Centro Universitário São Camilo, Centro Universitário São Camilo, Av. Nazaré, 1501, São Paulo, Brazil; Programa de Pós-graduação Biologia-Química, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo campus Diadema, Rua São Nicolau, 210, Diadema, Brazil
| | - Natasha Ferraz de Campos Reis
- Programa de Pós-graduação Biologia-Química, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo campus Diadema, Rua São Nicolau, 210, Diadema, Brazil; Departamento de Ciências Farmacêuticas, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo campus Diadema
| | | | - Anuska Marcelino Alvares-Saraiva
- Instituto de Ciências da Saúde, Pós-graduação em Patologia Ambiental e Experimental, Universidade Paulista, Rua Bacelar, 902, São Paulo, Brazil; Pós Graduação Interdisciplinar em Saúde, Universidade Cruzeiro do Sul, Rua Galvão Bueno, 868, São Paulo, Brazil; Laboratório de Fisiopatologia, Instituto Butantan, Av. Vital Brasil, 1500, São Paulo, Brazil
| | - Patricia Xander
- Programa de Pós-graduação Biologia-Química, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo campus Diadema, Rua São Nicolau, 210, Diadema, Brazil; Departamento de Ciências Farmacêuticas, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo campus Diadema.
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20
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Olson WJ, Jakic B, Labi V, Woelk J, Derudder E, Baier G, Hermann-Kleiter N. A role for the nuclear receptor NR2F6 in peritoneal B cell homeostasis. Front Immunol 2022; 13:845235. [PMID: 36052079 PMCID: PMC9425112 DOI: 10.3389/fimmu.2022.845235] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 07/18/2022] [Indexed: 11/19/2022] Open
Abstract
B cells are key mediators of humoral immunity. Mature B cells fall into various sub-classes that can be separated by their ontogeny, expression of cell surface markers, anatomical location, and function. B1 subsets play important roles in natural immunity and constitute the majority of B cells in newborns. In the adult, B1 cells predominate in the pleural and peritoneal cavities, while the mature B2 follicular subset makes up the major fraction of B cells in lymphoid tissue, although important subsets of antibody-secreting B1 cells are also present at these sites. B1 cells are the main producers of natural IgM but can also contribute to elimination of some pathogens, while B2 cells primarily mediate response to foreign antigens. The differential molecular underpinning of the B1 and B2 subsets remains incompletely understood. Here we demonstrate that germline-deficiency of the orphan nuclear receptor NR2F6 causes a partial loss of B1b and B2 B cells in the peritoneum while leaving peritoneal B1a cells unaltered. A competitive bone marrow chimera in Nr2f6+/+ host mice produced similar numbers of Nr2f6+/+ and Nr2f6-/- peritoneal B1b and B2 cells. The proliferation of Nr2f6-/- peritoneal B cells was not altered, while the migration marker CXCR5 was reduced on all subsets but Beta7-integrin was reduced only on peritoneal B1b and B2 cells. Similarly, B1b and B2 but not B1a cells, exhibited significantly reduced survival.
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Affiliation(s)
- William J. Olson
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
- *Correspondence: William J. Olson, ; Natascha Hermann-Kleiter,
| | - Bojana Jakic
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Verena Labi
- Institute of Developmental Immunology, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | - Johannes Woelk
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Emmanuel Derudder
- Institute for Biomedical Aging Research, University of Innsbruck, Innsbruck, Austria
| | - Gottfried Baier
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
| | - Natascha Hermann-Kleiter
- Translational Cell Genetics, Department of Pharmacology and Genetics, Medical University of Innsbruck, Innsbruck, Austria
- *Correspondence: William J. Olson, ; Natascha Hermann-Kleiter,
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21
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Elias S, Sharma R, Schizas M, Valdez I, Rampersaud S, Park SM, Gonzalez-Figueroa P, Li QZ, Hoyos B, Rudensky AY. CXCR4+ Treg cells control serum IgM levels and natural IgM autoantibody production by B-1 cells in the bone marrow. J Exp Med 2022; 219:213268. [PMID: 35670812 PMCID: PMC9178519 DOI: 10.1084/jem.20220047] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 04/12/2022] [Accepted: 05/20/2022] [Indexed: 12/26/2022] Open
Abstract
Regulatory T (Treg) cells represent a specialized lineage of suppressive CD4+ T cells whose functionality is critically dependent on their ability to migrate to and dwell in the proximity of cells they control. Here we show that continuous expression of the chemokine receptor CXCR4 in Treg cells is required for their ability to accumulate in the bone marrow (BM). Induced CXCR4 ablation in Treg cells led to their rapid depletion and consequent increase in mature B cells, foremost the B-1 subset, observed exclusively in the BM without detectable changes in plasma cells or hematopoietic stem cells or any signs of systemic or local immune activation elsewhere. Dysregulation of BM B-1 B cells was associated with a highly specific increase in IgM autoantibodies and total serum IgM levels. Thus, Treg cells control autoreactive B-1 B cells in a CXCR4-dependent manner. These findings have significant implications for understanding the regulation of B cell autoreactivity and malignancies.
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Affiliation(s)
- Shlomo Elias
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Rahul Sharma
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Michael Schizas
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Izabella Valdez
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Sham Rampersaud
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Sun-Mi Park
- Molecular Pharmacology Program, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Paula Gonzalez-Figueroa
- Department of Immunology and Infectious Disease, The John Curtin School of Medical Research, The Australian National University, Canberra, Australia
| | - Quan-Zhen Li
- Microarray and Immune Phenotyping Core Facility, Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX
| | - Beatrice Hoyos
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Alexander Y Rudensky
- Immunology Program, Memorial Sloan Kettering Cancer Center, New York, NY.,Howard Hughes Medical Institute, Memorial Sloan Kettering Cancer Center, New York, NY
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22
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Newell KL, Cox J, Waickman AT, Wilmore JR, Winslow GM. T-bet + B cells Dominate the Peritoneal Cavity B Cell Response during Murine Intracellular Bacterial Infection. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:2749-2760. [PMID: 35867676 PMCID: PMC9309898 DOI: 10.4049/jimmunol.2101209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Accepted: 04/16/2022] [Indexed: 06/15/2023]
Abstract
T-bet+ B cells have emerged as a major B cell subset associated with both protective immunity and immunopathogenesis. T-bet is a transcription factor associated with the type I adaptive immune response to intracellular pathogens, driving an effector program characterized by the production of IFN-γ. Murine infection with the intracellular bacterium, Ehrlichia muris, generates protective extrafollicular T cell-independent T-bet+ IgM-secreting plasmablasts, as well as T-bet+ IgM memory cells. Although T-bet is a signature transcription factor for this subset, it is dispensable for splenic CD11c+ memory B cell development, but not for class switching to IgG2c. In addition to the T-bet+ plasmablasts found in the spleen, we show that Ab-secreting cells can also be found within the mouse peritoneal cavity; these cells, as well as their CD138- counterparts, also expressed T-bet. A large fraction of the T-bet+ peritoneal B cells detected during early infection were highly proliferative and expressed CXCR3 and CD11b, but, unlike in the spleen, they did not express CD11c. T-bet+ CD11b+ memory B cells were the dominant B cell population in the peritoneal cavity at 30 d postinfection, and although they expressed high levels of T-bet, they did not require B cell-intrinsic T-bet expression for their generation. Our data uncover a niche for T-bet+ B cells within the peritoneal cavity during intracellular bacterial infection, and they identify this site as a reservoir for T-bet+ B cell memory.
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Affiliation(s)
- Krista L Newell
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY
| | - Justin Cox
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY
| | - Adam T Waickman
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY
| | - Joel R Wilmore
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY
| | - Gary M Winslow
- Department of Microbiology and Immunology, SUNY Upstate Medical University, Syracuse, NY
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23
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Liu Z, De Porto AP, De Beer R, Roelofs JJ, De Boer OJ, Florquin S, Van't Veer C, Hendriks RW, Van der Poll T, De Vos AF. Bruton's Tyrosine Kinase in Neutrophils Is Crucial for Host Defense against Klebsiella pneumoniae. J Innate Immun 2022; 15:1-15. [PMID: 35537415 PMCID: PMC10643901 DOI: 10.1159/000524583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 03/17/2022] [Indexed: 11/19/2022] Open
Abstract
Humans with dysfunctional Bruton's tyrosine kinase (Btk) are highly susceptible to bacterial infections. Compelling evidence indicates that Btk is essential for B cell-mediated immunity, whereas its role in myeloid cell-mediated immunity against infections is controversial. In this study, we determined the contribution of Btk in B cells and neutrophils to host defense against the extracellular bacterial pathogen Klebsiella pneumoniae, a common cause of pulmonary infections and sepsis. Btk-/- mice were highly susceptible to Klebsiella infection, which was not reversed by Btk re-expression in B cells and restoration of natural antibody levels. Neutrophil-specific Btk deficiency impaired host defense against Klebsiella to a similar extent as complete Btk deficiency. Neutrophil-specific Btk deficiency abolished extracellular reactive oxygen species production in response to Klebsiella. These data indicate that expression of Btk in neutrophils is crucial, while in B cells, it is dispensable for in vivo host defense against K. pneumoniae.
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Affiliation(s)
- Zhe Liu
- Center for Experimental and Molecular Medicine, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Infection and Immunity Institute (AI&II), Amsterdam UMC, Amsterdam, The Netherlands
| | - Alexander P.N.A. De Porto
- Center for Experimental and Molecular Medicine, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Infection and Immunity Institute (AI&II), Amsterdam UMC, Amsterdam, The Netherlands
| | - Regina De Beer
- Center for Experimental and Molecular Medicine, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Infection and Immunity Institute (AI&II), Amsterdam UMC, Amsterdam, The Netherlands
| | - Joris J.T.H. Roelofs
- Amsterdam Infection and Immunity Institute (AI&II), Amsterdam UMC, Amsterdam, The Netherlands
- Department of Pathology, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Onno J. De Boer
- Department of Pathology, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Sandrine Florquin
- Department of Pathology, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Cornelis Van't Veer
- Center for Experimental and Molecular Medicine, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Infection and Immunity Institute (AI&II), Amsterdam UMC, Amsterdam, The Netherlands
| | - Rudi W. Hendriks
- Department of Pulmonary Medicine, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Tom Van der Poll
- Center for Experimental and Molecular Medicine, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Infection and Immunity Institute (AI&II), Amsterdam UMC, Amsterdam, The Netherlands
- Division of Infectious Diseases, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Alex F. De Vos
- Center for Experimental and Molecular Medicine, Amsterdam UMC, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Infection and Immunity Institute (AI&II), Amsterdam UMC, Amsterdam, The Netherlands
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24
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Zhou J, Blevins LK, Crawford RB, Kaminski NE. Role of Programmed Cell Death Protein-1 and Lymphocyte Specific Protein Tyrosine Kinase in the Aryl Hydrocarbon Receptor- Mediated Impairment of the IgM Response in Human CD5 + Innate-Like B Cells. Front Immunol 2022; 13:884203. [PMID: 35558082 PMCID: PMC9088000 DOI: 10.3389/fimmu.2022.884203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 03/28/2022] [Indexed: 11/24/2022] Open
Abstract
Innate-like B cells (ILBs) are a heterogeneous population B cells which participate in innate and adaptive immune responses. This diverse subset of B cells is characterized by the expression of CD5 and has been shown to secrete high levels of immunoglobulin M (IgM) in the absence of infection or vaccination. Further, CD5+ ILBs have been shown to express high basal levels of lymphocyte specific protein tyrosine kinase (LCK) and programmed cell death protein-1 (PD-1), which are particularly sensitive to stimulation by interferon gamma (IFNγ). Previous studies have demonstrated that activation of the aryl hydrocarbon receptor (AHR), a cytosolic ligand-activated transcription factor, results in suppressed IgM responses and is dependent on LCK. A recent study showed that CD5+ ILBs are particularly sensitive to AHR activation as evidenced by a significant suppression of the IgM response compared to CD5- B cells, which were refractory. Therefore, the objective of this study was to further investigate the role of LCK and PD-1 signaling in AHR-mediated suppression of CD5+ ILBs. In addition, studies were conducted to establish whether IFNγ alters the levels of LCK and PD-1 in CD5+ ILBs. We found that AHR activation led to a significant upregulation of total LCK and PD-1 proteins in CD5+ ILBs, which correlated with suppression of IgM. Interestingly, treatment with recombinant IFNγ reduced LCK protein levels and reversed AHR-mediated IgM suppression in CD5+ ILBs in a similar manner as LCK inhibitors. Collectively, these results support a critical role for LCK and PD-1 in AHR-mediated suppression of the IgM response in human CD5+ ILBs.
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Affiliation(s)
- Jiajun Zhou
- Department of Microbiology & Molecular Genetics, Michigan State University, East Lansing, MI, United States
- Institute of Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Lance K. Blevins
- Institute of Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Robert B. Crawford
- Institute of Integrative Toxicology, Michigan State University, East Lansing, MI, United States
| | - Norbert E. Kaminski
- Institute of Integrative Toxicology, Michigan State University, East Lansing, MI, United States
- Department of Pharmacology & Toxicology, Michigan State University, East Lansing, MI, United States
- Center for Research on Ingredient Safety, Michigan State University, East Lansing, MI, United States
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25
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Marginal Zone B-Cell Populations and Their Regulatory Potential in the Context of HIV and Other Chronic Inflammatory Conditions. Int J Mol Sci 2022; 23:ijms23063372. [PMID: 35328792 PMCID: PMC8949885 DOI: 10.3390/ijms23063372] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/11/2022] [Accepted: 03/17/2022] [Indexed: 12/12/2022] Open
Abstract
Inflammation in the context of Human Immunodeficiency Virus (HIV) establishes early and persists beyond antiretroviral therapy (ART). As such, we have shown excess B-cell activating factor (BAFF) in the blood of HIV-infected progressors, as soon as in the acute phase, and despite successful ART. Excess BAFF was associated with deregulation of the B-cell compartment; notably, with increased frequencies of a population sharing features of both transitional immature (TI) and marginal zone (MZ) B-cells, we termed Marginal Zone precursor-like (MZp). We have reported similar observations with HIV-transgenic mice, Simian Immunodeficiency Virus (SIV)-infected macaques, and more recently, with HIV-infected Beninese commercial sex workers, which suggests that excess BAFF and increased frequencies of MZp B-cells are reliable markers of inflammation in the context of HIV. Importantly, we have recently shown that in healthy individuals, MZps present an important regulatory B-cell (Breg) profile and function. Herein, we wish to review our current knowledge on MZ B-cell populations, especially their Breg status, and that of other B-cell populations sharing similar features. BAFF and its analog A Proliferation-Inducing Ligand (APRIL) are important in shaping the MZ B-cell pool; moreover, the impact that excess BAFF—encountered in the context of HIV and several chronic inflammatory conditions—may exert on MZ B-cell populations, Breg and antibody producing capacities is a threat to the self-integrity of their antibody responses and immune surveillance functions. As such, deregulations of MZ B-cell populations contribute to autoimmune manifestations and the development of MZ lymphomas (MZLs) in the context of HIV and other inflammatory diseases. Therefore, further comprehending the mechanisms regulating MZ B-cell populations and their functions could be beneficial to innovative therapeutic avenues that could be deployed to restore MZ B-cell immune competence in the context of chronic inflammation involving excess BAFF.
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26
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Halperin ST, ’t Hart BA, Luchicchi A, Schenk GJ. The Forgotten Brother: The Innate-like B1 Cell in Multiple Sclerosis. Biomedicines 2022; 10:606. [PMID: 35327408 PMCID: PMC8945227 DOI: 10.3390/biomedicines10030606] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/21/2022] [Accepted: 03/01/2022] [Indexed: 02/04/2023] Open
Abstract
Multiple sclerosis (MS) is a neurodegenerative disease of the central nervous system (CNS), traditionally considered a chronic autoimmune attack against the insulating myelin sheaths around axons. However, the exact etiology has not been identified and is likely multi-factorial. Recently, evidence has been accumulating that implies that autoimmune processes underlying MS may, in fact, be triggered by pathological processes initiated within the CNS. This review focuses on a relatively unexplored immune cell-the "innate-like" B1 lymphocyte. The B1 cell is a primary-natural-antibody- and anti-inflammatory-cytokine-producing cell present in the healthy brain. It has been recently shown that its frequency and function may differ between MS patients and healthy controls, but its exact involvement in the MS pathogenic process remains obscure. In this review, we propose that this enigmatic cell may play a more prominent role in MS pathology than ever imagined. We aim to shed light on the human B1 cell in health and disease, and how dysregulation in its delicate homeostatic role could impact MS. Furthermore, novel therapeutic avenues to restore B1 cells' beneficial functions will be proposed.
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Affiliation(s)
| | | | - Antonio Luchicchi
- Department of Anatomy and Neurosciences, Amsterdam Neuroscience, MS Center Amsterdam, Amsterdam UMC, Vrije Universiteit, 1081 HZ Amsterdam, The Netherlands; (S.T.H.); (B.A.’t.H.)
| | - Geert J. Schenk
- Department of Anatomy and Neurosciences, Amsterdam Neuroscience, MS Center Amsterdam, Amsterdam UMC, Vrije Universiteit, 1081 HZ Amsterdam, The Netherlands; (S.T.H.); (B.A.’t.H.)
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27
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Tang Q, Cen Z, Lu J, Dong J, Qin L, Lu F, Wu W. The abnormal distribution of peripheral B1 cells and transition B cells in patients with idiopathic dilated cardiomyopathy: a pilot study. BMC Cardiovasc Disord 2022; 22:78. [PMID: 35246021 PMCID: PMC8895850 DOI: 10.1186/s12872-022-02461-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 01/13/2022] [Indexed: 11/10/2022] Open
Abstract
Background The aberrant distribution of peripheral B cell subsets is associated with the pathogenesis of a variety of inflammatory and autoimmune diseases. However, the distribution of peripheral B cell subsets in patients with idiopathic dilated cardiomyopathy (DCM) remains to be elucidated.
Methods Twenty-seven patients with idiopathic DCM (DCM group), 18 control patients with heart failure (HF group) and 21 healthy individuals (HC group) were included in this study. Peripheral B cell subsets were analysed using multicolour flow cytometry. The plasma β1 adrenergic receptor (β1-AR) autoantibody titre was determined using ELISA. Additionally, clinical features were also collected. Results Compared with the HF and HC groups, the percentage of B1 cells was significantly decreased, whereas the percentage of transitional B cells (Tr) was significantly increased in the DCM group. Notably, the percentage of B1 cells was significantly lower in patients with β1-AR autoantibody-positive DCM than in β1-AR autoantibody-negative patients. The correlation analysis showed that the percentage of B1 cells was negatively correlated with N-terminal pro-brain natriuretic peptide (NT-proBNP) levels and positively correlated with the left ventricular ejection fraction in patients with DCM. Conclusion As shown in the present study, the percentage of B1 cells in the peripheral blood of patients with idiopathic DCM is abnormally decreased, especially in β1-AR autoantibody-positive patients, while the percentage of Tr cells is significantly increased, indicating that B1 cells and Tr cells may be implicated in the pathogenesis of idiopathic DCM. The decrease in the percentage of B1 cells is directly related to the severity of DCM. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-022-02461-8.
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Affiliation(s)
- Quan Tang
- Department of Cardiology, First Affiliated Hospital of Guangxi Medical University, Guangxi Cardiovascular Institute, Shuangyong Road 6, Nanning, 530021, Guangxi, People's Republic of China
| | - Zhihong Cen
- Department of Cardiology, First Affiliated Hospital of Guangxi Medical University, Guangxi Cardiovascular Institute, Shuangyong Road 6, Nanning, 530021, Guangxi, People's Republic of China
| | - Jing Lu
- Department of Cardiology, First Affiliated Hospital of Guangxi Medical University, Guangxi Cardiovascular Institute, Shuangyong Road 6, Nanning, 530021, Guangxi, People's Republic of China
| | - Jingwei Dong
- Department of Cardiology, First Affiliated Hospital of Guangxi Medical University, Guangxi Cardiovascular Institute, Shuangyong Road 6, Nanning, 530021, Guangxi, People's Republic of China
| | - Lin Qin
- Department of Cardiology, Fifth Affiliated Hospital of Guangxi Medical University, Nanning, 530022, Guangxi, People's Republic of China
| | - Feiyu Lu
- Department of Cardiology, First Affiliated Hospital of Guangxi Medical University, Guangxi Cardiovascular Institute, Shuangyong Road 6, Nanning, 530021, Guangxi, People's Republic of China
| | - Weifeng Wu
- Department of Cardiology, First Affiliated Hospital of Guangxi Medical University, Guangxi Cardiovascular Institute, Shuangyong Road 6, Nanning, 530021, Guangxi, People's Republic of China.
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28
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Londregan J, Maslanka J, Goldman N, Somerville J, Riggs JE. IgD ligation allows peritoneal cavity B cell proliferation. Immunobiology 2022; 227:152181. [PMID: 35077917 PMCID: PMC8918009 DOI: 10.1016/j.imbio.2022.152181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/24/2021] [Accepted: 01/17/2022] [Indexed: 11/19/2022]
Abstract
Atypical cytokine production and immune cell subset ratios, particularly those that include high proportions of macrophages, characterize tumor microenvironments (TMEs). TMEs can be modeled by culturing peritoneal cavity (PerC) cells which have a high macrophage to lymphocyte ratio. With TCR or BCR ligation, PerC lymphocyte proliferation is tempered by macrophages. However, PHA (T cells) and anti-CD40 (B cells) are activators that induce proliferation. Herein, we report that ligating IgD, in contrast to IgM, triggers PerC B cell proliferation. IL-4 addition enhanced the IgD response for BALB/c PerC B cells but suppressed that of C57BL/6 mice. Intriguingly, concurrent ligation of IgD and CD3ε rescued a PerC T cell proliferative response. These results serve to expand the list of targets for promoting cellular and humoral immunity in conditions that model macrophage-rich TMEs.
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Affiliation(s)
| | - Jeffrey Maslanka
- Biology Department, Rider University, Lawrenceville, NJ 08648, USA
| | - Naomi Goldman
- Biology Department, Rider University, Lawrenceville, NJ 08648, USA
| | - John Somerville
- Biology Department, Rider University, Lawrenceville, NJ 08648, USA
| | - James E Riggs
- Biology Department, Rider University, Lawrenceville, NJ 08648, USA.
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29
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Schuller M, Pfeifer V, Kirsch AH, Klötzer KA, Mooslechner AA, Rosenkranz AR, Stiegler P, Schemmer P, Sourij H, Eller P, Prietl B, Eller K. B Cell Composition Is Altered After Kidney Transplantation and Transitional B Cells Correlate With SARS-CoV-2 Vaccination Response. Front Med (Lausanne) 2022; 9:818882. [PMID: 35187002 PMCID: PMC8847739 DOI: 10.3389/fmed.2022.818882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 01/13/2022] [Indexed: 11/13/2022] Open
Abstract
Background The COVID-19 pandemic has major implications on kidney transplant recipients (KTRs) since they show increased mortality due to impaired immune responses to SARS-CoV-2 infection and a reduced efficacy of SARS-CoV-2 vaccination. Surprisingly, dialysis patients have shown superior seroconversion rates after vaccination compared to KTRs. Therefore, we investigated peripheral blood B cell (BC) composition before and after kidney transplantation (KT) and aimed to screen the BC compartment to explain impaired antibody generation. Methods A total of 105 patients were recruited, and multicolor flow cytometric phenotyping of peripheral venous blood BC subpopulations was performed before and 1 year after KT. Complete follow-up was available for 71 individuals. Anti-SARS-CoV-2 antibodies were collected retrospectively and were available for 40 subjects, who had received two doses of an mRNA-based vaccine (BNT162b2 or mRNA-1273). Results Overall, relative BC frequencies within lymphocytes decreased, and their absolute counts trended in the same direction 1 year after KT as compared to CKD G5 patients. Frequencies and absolute numbers of naïve BCs remained stable. Frequencies of double negative BCs, a heterogeneous subpopulation of antigen experienced BCs lacking CD27 expression, were increased after KT, yet their absolute counts were similar at both time points. Transitional BCs (TrBCs) and plasmablasts were significantly reduced after KT in absolute and relative terms. Memory BCs were affected differently since class-switched and IgM-only subsets decreased after KT, but unswitched and IgD-only memory BCs remained unchanged. CD86+ and CD5+ expression on BCs was downregulated after KT. Correlational analysis revealed that TrBCs were the only subset to correlate with titer levels after SARS-CoV-2 vaccination. Responders showed higher TrBCs, both absolute and relative, than non-responders. Conclusion Together, after 1 year, KTRs showed persistent and profound compositional changes within the BC compartment. Low TrBCs, 1 year after KT, may account for the low serological response to SARS-CoV-2 vaccination in KTRs compared to dialysis patients. Our findings need confirmation in further studies as they may guide vaccination strategies.
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Affiliation(s)
- Max Schuller
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Verena Pfeifer
- Center for Biomarker Research in Medicine, CBmed GmbH, Graz, Austria.,Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Alexander H Kirsch
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Konstantin A Klötzer
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Agnes A Mooslechner
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Alexander R Rosenkranz
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Philipp Stiegler
- General, Visceral, and Transplant Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Peter Schemmer
- General, Visceral, and Transplant Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - Harald Sourij
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Philipp Eller
- Intensive Care Unit, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Barbara Prietl
- Center for Biomarker Research in Medicine, CBmed GmbH, Graz, Austria.,Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Kathrin Eller
- Division of Nephrology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
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30
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Fleming A, Castro‐Dopico T, Clatworthy MR. B cell class switching in intestinal immunity in health and disease. Scand J Immunol 2022; 95:e13139. [PMID: 34978077 PMCID: PMC9285483 DOI: 10.1111/sji.13139] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 12/31/2021] [Accepted: 12/31/2021] [Indexed: 12/12/2022]
Abstract
The gastrointestinal tract is colonized by trillions of commensal microorganisms that collectively form the microbiome and make essential contributions to organism homeostasis. The intestinal immune system must tolerate these beneficial commensals, whilst preventing pathogenic organisms from systemic spread. Humoral immunity plays a key role in this process, with large quantities of immunoglobulin (Ig)A secreted into the lumen on a daily basis, regulating the microbiome and preventing bacteria from encroaching on the epithelium. However, there is an increasing appreciation of the role of IgG antibodies in intestinal immunity, including beneficial effects in neonatal immune development, pathogen and tumour resistance, but also of pathological effects in driving chronic inflammation in inflammatory bowel disease (IBD). These antibody isotypes differ in effector function, with IgG exhibiting more proinflammatory capabilities compared with IgA. Therefore, the process that leads to the generation of different antibody isotypes, class-switch recombination (CSR), requires careful regulation and is orchestrated by the immunological cues generated by the prevalent local challenge. In general, an initiating signal such as CD40 ligation on B cells leads to the induction of activation-induced cytidine deaminase (AID), but a second cytokine-mediated signal determines which Ig heavy chain is expressed. Whilst the cytokines driving intestinal IgA responses are well-studied, there is less clarity on how IgG responses are generated in the intestine, and how these cues might become dysfunctional in IBD. Here, we review the key mechanisms regulating class switching to IgA vs IgG in the intestine, processes that could be therapeutically manipulated in infection and IBD.
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Affiliation(s)
- Aaron Fleming
- Molecular Immunity UnitDepartment of MedicineCambridge Institute of Therapeutic Immunology and Infectious DiseasesUniversity of CambridgeCambridgeUK
| | - Tomas Castro‐Dopico
- Molecular Immunity UnitDepartment of MedicineCambridge Institute of Therapeutic Immunology and Infectious DiseasesUniversity of CambridgeCambridgeUK
- The Francis Crick InstituteLondonUK
| | - Menna R. Clatworthy
- Molecular Immunity UnitDepartment of MedicineCambridge Institute of Therapeutic Immunology and Infectious DiseasesUniversity of CambridgeCambridgeUK
- Cellular GeneticsWellcome Trust Sanger InstituteHinxtonUK
- NIHR Cambridge Biomedical Research CentreCambridgeUK
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31
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Barington L, Christensen LVV, Pedersen KK, Niss Arfelt K, Roumain M, Jensen KHR, Kjær VMS, Daugvilaite V, Kearney JF, Christensen JP, Hjortø GM, Muccioli GG, Holst PJ, Rosenkilde MM. GPR183 Is Dispensable for B1 Cell Accumulation and Function, but Affects B2 Cell Abundance, in the Omentum and Peritoneal Cavity. Cells 2022; 11:cells11030494. [PMID: 35159303 PMCID: PMC8834096 DOI: 10.3390/cells11030494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/25/2022] [Accepted: 01/27/2022] [Indexed: 02/06/2023] Open
Abstract
B1 cells constitute a specialized subset of B cells, best characterized in mice, which is abundant in body cavities, including the peritoneal cavity. Through natural and antigen-induced antibody production, B1 cells participate in the early defense against bacteria. The G protein-coupled receptor 183 (GPR183), also known as Epstein-Barr virus-induced gene 2 (EBI2), is an oxysterol-activated chemotactic receptor that regulates migration of B cells. We investigated the role of GPR183 in B1 cells in the peritoneal cavity and omentum. B1 cells expressed GPR183 at the mRNA level and migrated towards the GPR183 ligand 7α,25-dihydroxycholesterol (7α,25-OHC). GPR183 knock-out (KO) mice had smaller omenta, but with normal numbers of B1 cells, whereas they had fewer B2 cells in the omentum and peritoneal cavity than wildtype (WT) mice. GPR183 was not responsible for B1 cell accumulation in the omentum in response to i.p. lipopolysaccharide (LPS)-injection, in spite of a massive increase in 7α,25-OHC levels. Lack of GPR183 also did not affect B1a- or B1b cell-specific antibody responses after vaccination. In conclusion, we found that GPR183 is non-essential for the accumulation and function of B1 cells in the omentum and peritoneal cavity, but that it influences the abundance of B2 cells in these compartments.
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Affiliation(s)
- Line Barington
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
| | - Liv von Voss Christensen
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
| | - Kristian Kåber Pedersen
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
| | - Kristine Niss Arfelt
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
| | - Martin Roumain
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, 1200 Brussels, Belgium; (M.R.); (G.G.M.)
| | - Kristian Høj Reveles Jensen
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
| | - Viktoria Madeline Skovgaard Kjær
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
| | - Viktorija Daugvilaite
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
| | - John F. Kearney
- Division of Developmental and Clinical Immunology, Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA;
| | - Jan Pravsgaard Christensen
- Infectious Immunology Group, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark;
| | - Gertrud Malene Hjortø
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
| | - Giulio G. Muccioli
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, Université catholique de Louvain, 1200 Brussels, Belgium; (M.R.); (G.G.M.)
| | - Peter Johannes Holst
- Experimental Vaccinology Group, Centre for Medical Parasitology, Department of Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark;
- InProTher ApS, 2200 Copenhagen, Denmark
| | - Mette Marie Rosenkilde
- Laboratory for Molecular Pharmacology, Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (L.B.); (L.v.V.C.); (K.K.P.); (K.N.A.); (K.H.R.J.); (V.M.S.K.); (V.D.); (G.M.H.)
- Correspondence:
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32
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Regulation of the BCR signalosome by the class II peptide editor, H2-M, affects the development and repertoire of innate-like B cells. Cell Rep 2022; 38:110200. [DOI: 10.1016/j.celrep.2021.110200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 09/23/2021] [Accepted: 12/13/2021] [Indexed: 11/21/2022] Open
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Immunization of preterm infants: current evidence and future strategies to individualized approaches. Semin Immunopathol 2022; 44:767-784. [PMID: 35922638 PMCID: PMC9362650 DOI: 10.1007/s00281-022-00957-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 07/08/2022] [Indexed: 12/15/2022]
Abstract
Preterm infants are at particularly high risk for infectious diseases. As this vulnerability extends beyond the neonatal period into childhood and adolescence, preterm infants benefit greatly from infection-preventive measures such as immunizations. However, there is an ongoing discussion about vaccine safety and efficacy due to preterm infants' distinct immunological features. A significant proportion of infants remains un- or under-immunized when discharged from primary hospital stay. Educating health care professionals and parents, promoting maternal immunization and evaluating the potential of new vaccination tools are important means to reduce the overall burden from infectious diseases in preterm infants. In this narrative review, we summarize the current knowledge about vaccinations in premature infants. We discuss the specificities of early life immunity and memory function, including the role of polyreactive B cells, restricted B cell receptor diversity and heterologous immunity mediated by a cross-reactive T cell repertoire. Recently, mechanistic studies indicated that tissue-resident memory (Trm) cell populations including T cells, B cells and macrophages are already established in the fetus. Their role in human early life immunity, however, is not yet understood. Tissue-resident memory T cells, for example, are diminished in airway tissues in neonates as compared to older children or adults. Hence, the ability to make specific recall responses after secondary infectious stimulus is hampered, a phenomenon that is transcriptionally regulated by enhanced expression of T-bet. Furthermore, the microbiome establishment is a dominant factor to shape resident immunity at mucosal surfaces, but it is often disturbed in the context of preterm birth. The proposed function of Trm T cells to remember benign interactions with the microbiome might therefore be reduced which would contribute to an increased risk for sustained inflammation. An improved understanding of Trm interactions may determine novel targets of vaccination, e.g., modulation of T-bet responses and facilitate more individualized approaches to protect preterm babies in the future.
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Parthasarathy R, Hägglöf T, Hadley JT, McLennan A, Mattke A, Dudley EA, Kumagai A, Dong LQ, Leadbetter EA. Receptor Interacting Protein Kinase Pathways Regulate Innate B Cell Developmental Checkpoints But Not Effector Function in Mice. Front Immunol 2021; 12:758407. [PMID: 34956189 PMCID: PMC8696004 DOI: 10.3389/fimmu.2021.758407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/22/2021] [Indexed: 11/13/2022] Open
Abstract
Mutations in the scaffolding domain of Receptor Interacting Protein kinases (RIP) underlie the recently described human autoimmune syndrome, CRIA, characterized by lymphadenopathy, splenomegaly, and autoantibody production. While disease mechanisms for CRIA remain undescribed, RIP kinases work together with caspase-8 to regulate cell death, which is critical for normal differentiation of many cell types. Here, we describe a key role for RIP1 in facilitating innate B cell differentiation and subsequent activation. By comparing RIP1, RIP3, and caspase-8 triple deficient and RIP3, caspase-8 double deficient mice, we identified selective contributions of RIP1 to an accumulation of murine splenic Marginal Zone (MZ) B cells and B1-b cells. We used mixed bone-marrow chimeras to determine that innate B cell commitment required B cell-intrinsic RIP1, RIP3, and caspase-8 sufficiency. RIP1 regulated MZ B cell development rather than differentiation and RIP1 mediates its innate immune effects independent of the RIP1 kinase domain. NP-KLH/alum and NP-Ficoll vaccination of mice doubly deficient in both caspase-8 and RIP3 or deficient in all three proteins (RIP3, caspase-8, and RIP1) revealed uniquely delayed T-dependent and T-independent IgG responses, abnormal splenic germinal center architecture, and reduced extrafollicular plasmablast formation compared to WT mice. Thus, RIP kinases and caspase-8 jointly orchestrate B cell fate and delayed effector function through a B cell-intrinsic mechanism.
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Affiliation(s)
- Raksha Parthasarathy
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Thomas Hägglöf
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Jason T Hadley
- Department of Cell Systems and Anatomy, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Alexandra McLennan
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States.,Department of Engineering, St Mary's University, San Antonio, TX, United States
| | - Aiden Mattke
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Elizabeth A Dudley
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Abigail Kumagai
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Lily Q Dong
- Department of Cell Systems and Anatomy, University of Texas Health at San Antonio, San Antonio, TX, United States
| | - Elizabeth A Leadbetter
- Department of Microbiology, Immunology & Molecular Genetics, University of Texas Health at San Antonio, San Antonio, TX, United States
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35
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Mouse innate-like B-1 lymphocytes promote inhaled particle-induced in vitro granuloma formation and inflammation in conjunction with macrophages. Arch Toxicol 2021; 96:585-599. [PMID: 34935064 PMCID: PMC8837577 DOI: 10.1007/s00204-021-03200-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 12/09/2021] [Indexed: 11/20/2022]
Abstract
The current paradigm for explaining lung granulomatous diseases induced by inhaled particles is mainly based on macrophages. This mechanism is now challenging because B lymphocytes also infiltrate injured tissue, and the deficiency in B lymphocytes is associated with limited lung granulomas in silica-treated mice. Here, we investigated how B lymphocytes respond to micro- and nanoparticles by combining in vivo and in vitro mouse models. We first demonstrated that innate-like B-1 lymphocytes (not conventional B-2 lymphocytes or plasma cells) specifically accumulated during granuloma formation in mice instilled with crystalline silica (DQ12, 2.5 mg/mouse) and carbon nanotubes (CNT Mitsui, 0.2 mg/mouse). In comparison to macrophages, peritoneal B-1 lymphocytes purified from naïve mice were resistant to the pyroptotic activity of reactive particles (up to 1 mg/mL) but clustered to establish in vitro cell/particle aggregates. Mouse B-1 lymphocytes (not B-2 lymphocytes) in coculture with macrophages and CNT (0.1 µg/mL) organized three-dimensional spheroid structures in Matrigel and stimulated the release of TIMP-1. Furthermore, purified B-1 lymphocytes are sensitive to nanosilica toxicity through radical generation in culture. Nanosilica-exposed B-1 lymphocytes released proinflammatory cytokines and alarmins. In conclusion, our data indicate that in addition to macrophages, B-1 lymphocytes participate in micrometric particle-induced granuloma formation and display inflammatory functions in response to nanoparticles.
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36
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Su N, Hu CB, Shao T, Jin CY, Li H, Ji JF, Qin LL, Fan DD, Lin AF, Xiang LX, Shao JZ. Functional role of CD40 and CD154 costimulatory signals in IgZ-mediated immunity against bacterial infection. FISH AND SHELLFISH IMMUNOLOGY REPORTS 2021; 2:100038. [DOI: 10.1016/j.fsirep.2021.100038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/11/2021] [Accepted: 11/11/2021] [Indexed: 01/18/2023] Open
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37
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Fu Y, Wang Z, Yu B, Lin Y, Huang E, Liu R, Zhao C, Lu M, Xu W, Liu H, Liu Y, Wang L, Chu Y. Intestinal CD11b + B Cells Ameliorate Colitis by Secreting Immunoglobulin A. Front Immunol 2021; 12:697725. [PMID: 34804004 PMCID: PMC8595478 DOI: 10.3389/fimmu.2021.697725] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 10/14/2021] [Indexed: 12/12/2022] Open
Abstract
The intestinal mucosal immune environment requires multiple immune cells to maintain homeostasis. Although intestinal B cells are among the most important immune cells, little is known about the mechanism that they employ to regulate immune homeostasis. In this study, we found that CD11b+ B cells significantly accumulated in the gut lamina propria and Peyer's patches in dextran sulfate sodium-induced colitis mouse models and patients with ulcerative colitis. Adoptive transfer of CD11b+ B cells, but not CD11b-/- B cells, effectively ameliorated colitis and exhibited therapeutic effects. Furthermore, CD11b+ B cells were found to produce higher levels of IgA than CD11b- B cells. CD11b deficiency in B cells dampened IgA production, resulting in the loss of their ability to ameliorate colitis. Mechanistically, CD11b+ B cells expressed abundant TGF-β and TGF-β receptor II, as well as highly activate phosphorylated Smad2/3 signaling pathway, consequently promoting the class switch to IgA. Collectively, our findings demonstrate that CD11b+ B cells are essential intestinal suppressive immune cells and the primary source of intestinal IgA, which plays an indispensable role in maintaining intestinal homeostasis.
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Affiliation(s)
- Ying Fu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Zhiming Wang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Baichao Yu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yuli Lin
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Enyu Huang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Pathology, The University of Hong Kong, Hong Kong, Hong Kong, SAR China
| | - Ronghua Liu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Chujun Zhao
- Department of Biomedical Engineering, Columbia University, New York, NY, United States
| | - Mingfang Lu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Wei Xu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Hongchun Liu
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yongzhong Liu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Luman Wang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Endocrinology and Metabolism, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Center, Fudan University, Shanghai, China
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38
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IL-27-producing B-1a cells suppress neuroinflammation and CNS autoimmune diseases. Proc Natl Acad Sci U S A 2021; 118:2109548118. [PMID: 34782464 DOI: 10.1073/pnas.2109548118] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/29/2021] [Indexed: 01/06/2023] Open
Abstract
Regulatory B cells (Breg cells) that secrete IL-10 or IL-35 (i35-Breg) play key roles in regulating immunity in tumor microenvironment or during autoimmune and infectious diseases. Thus, loss of Breg function is implicated in development of autoimmune diseases while aberrant elevation of Breg prevents sterilizing immunity, exacerbates infectious diseases, and promotes cancer metastasis. Breg cells identified thus far are largely antigen-specific and derive mainly from B2-lymphocyte lineage. Here, we describe an innate-like IL-27-producing natural regulatory B-1a cell (i27-Breg) in peritoneal cavity and human umbilical cord blood. i27-Bregs accumulate in CNS and lymphoid tissues during neuroinflammation and confers protection against CNS autoimmune disease. i27-Breg immunotherapy ameliorated encephalomyelitis and uveitis through up-regulation of inhibitory receptors (Lag3, PD-1), suppression of Th17/Th1 responses, and propagating inhibitory signals that convert conventional B cells to regulatory lymphocytes that secrete IL-10 and/or IL-35 in eye, brain, or spinal cord. Furthermore, i27-Breg proliferates in vivo and sustains IL-27 secretion in CNS and lymphoid tissues, a therapeutic advantage over administering biologics (IL-10, IL-35) that are rapidly cleared in vivo. Mutant mice lacking irf4 in B cells exhibit exaggerated increase of i27-Bregs with few i35-Bregs, while mice with loss of irf8 in B cells have abundance of i35-Bregs but defective in generating i27-Bregs, identifying IRF8/BATF and IRF4/BATF axis in skewing B cell differentiation toward i27-Breg and i35-Breg developmental programs, respectively. Consistent with its developmental origin, disease suppression by innate i27-Bregs is neither antigen-specific nor disease-specific, suggesting that i27-Breg would be effective immunotherapy for a wide spectrum of autoimmune diseases.
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39
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Dahmani M, Cook JH, Zhu JC, Riley SP. Contribution of classical complement activation and IgM to the control of Rickettsia infection. Mol Microbiol 2021; 116:1476-1488. [PMID: 34725868 PMCID: PMC8955150 DOI: 10.1111/mmi.14839] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 01/02/2023]
Abstract
Pathogenic Rickettsia are obligate intracellular bacteria and the etiologic agents of many life‐threatening infectious diseases. Due to the serious nature of these infections, it is imperative to both identify the responsive immune sensory pathways and understand the associated immune mechanisms that restrict Rickettsia proliferation. Previous studies have demonstrated that the mammalian complement system is both activated during Rickettsia infection and contributes to the immune response to infection. To further define this component of the mammalian anti‐Rickettsia immune response, we sought to identify the mechanism(s) of complement activation during Rickettsia infection. We have employed a series of in vitro and in vivo models of infection to investigate the role of the classical complement activation pathway during Rickettsia infection. Depletion or elimination of complement activity demonstrates that both C1q and pre‐existing IgM contribute to complement activation; thus implicating the classical complement system in Rickettsia‐mediated complement activation. Elimination of the classical complement pathway from mice increases susceptibility to R. australis infection with both increased bacterial loads in multiple tissues and decreased immune activation markers. This study highlights the role of the classical complement pathway in immunity against Rickettsia and implicates resident Rickettsia‐responsive IgM in the response to infection.
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Affiliation(s)
- Mustapha Dahmani
- Department of Veterinary Medicine, University of Maryland-College Park, College Park, Maryland, USA.,Virginia-Maryland College of Veterinary Medicine, College Park, Maryland, USA
| | - Jack H Cook
- Department of Veterinary Medicine, University of Maryland-College Park, College Park, Maryland, USA.,Virginia-Maryland College of Veterinary Medicine, College Park, Maryland, USA
| | - Jinyi C Zhu
- Department of Veterinary Medicine, University of Maryland-College Park, College Park, Maryland, USA.,Virginia-Maryland College of Veterinary Medicine, College Park, Maryland, USA
| | - Sean P Riley
- Department of Veterinary Medicine, University of Maryland-College Park, College Park, Maryland, USA.,Virginia-Maryland College of Veterinary Medicine, College Park, Maryland, USA
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40
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Delaloy C, Schuh W, Jäck HM, Bonaud A, Espéli M. Single cell resolution of Plasma Cell fate programming in health and disease. Eur J Immunol 2021; 52:10-23. [PMID: 34694625 DOI: 10.1002/eji.202149216] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 09/14/2021] [Accepted: 10/20/2021] [Indexed: 11/09/2022]
Abstract
Long considered a homogeneous population dedicated to antibody secretion, plasma cell phenotypic and functional heterogeneity is increasingly recognised. Plasma cells were first segregated based on their maturation level, but the complexity of this subset might well be underestimated by this simple dichotomy. Indeed, in the last decade new functions have been attributed to plasma cells including but not limited to cytokine secretion. However, a proper characterization of plasma cell heterogeneity has remained elusive partly due to technical issues and cellular features that are specific to this cell type. Cell intrinsic and cell extrinsic signals could be at the origin of this heterogeneity. Recent advances in technologies like single cell RNA-seq, ATAC-seq or ChIP-seq on low cell numbers helped to elucidate the fate decision in other cell lineages and similar approaches could be implemented to evaluate the heterogeneous fate of activated B cells in health and disease. Here, we summarized published work shedding some lights on the stimuli and genetic program shaping B cell terminal differentiation at the single cell level in mice and men. We also discuss the fate and heterogeneity of plasma cells during immune responses, vaccination and in the frame of human plasma cell disorders. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Céline Delaloy
- UMR U1236, Université de Rennes 1, INSERM, Etablissement Français du Sang (EFS) de Bretagne, LabEx IGO, 2 Av du Pr Léon Bernard, Rennes, 35043, France.,French Germinal Center Club, French Society for Immunology (SFI), Paris, 75015, France
| | - Wolfgang Schuh
- Division of Molecular Immunology, Department of Internal Medicine III, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuernberg, Erlangen, Germany
| | - Hans-Martin Jäck
- Division of Molecular Immunology, Department of Internal Medicine III, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuernberg, Erlangen, Germany
| | - Amélie Bonaud
- Université de Paris, Institut de Recherche Saint Louis, EMiLy, Inserm U1160, Paris, F-75010, France.,OPALE Carnot Institute, The Organization for Partnerships in Leukemia, Hôpital Saint-Louis, Paris, France
| | - Marion Espéli
- French Germinal Center Club, French Society for Immunology (SFI), Paris, 75015, France.,Université de Paris, Institut de Recherche Saint Louis, EMiLy, Inserm U1160, Paris, F-75010, France.,OPALE Carnot Institute, The Organization for Partnerships in Leukemia, Hôpital Saint-Louis, Paris, France
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41
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Barrow F, Khan S, Wang H, Revelo XS. The Emerging Role of B Cells in the Pathogenesis of NAFLD. Hepatology 2021; 74:2277-2286. [PMID: 33961302 PMCID: PMC8463421 DOI: 10.1002/hep.31889] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/30/2021] [Accepted: 04/26/2021] [Indexed: 12/19/2022]
Abstract
NAFLD is one of the leading causes of abnormal liver function worldwide. NAFLD refers to a group of liver conditions ranging from nonalcoholic fatty liver to NASH, which involves inflammation, hepatocellular damage, and fibrosis. Triggering of inflammation in NASH is a key event in the progression of the disease, and identifying the factors that initiate or dysregulate this process is needed to develop strategies for its prevention or treatment. B cells have been implicated in several autoimmune and inflammatory diseases. However, their role in the pathogenesis of NAFLD and NASH is less clear. This review discusses the emerging evidence implicating intrahepatic B cells in the progression of NAFLD. We highlight the potential mechanisms of B-cell activation during NAFLD, such as increased hepatic expression of B-cell-activating factor, augmented oxidative stress, and translocation of gut-derived microbial products. We discuss the possible effector functions by which B cells promote NAFLD, including the production of proinflammatory cytokines and regulation of intrahepatic T cells and macrophages. Finally, we highlight the role of regulatory and IgA+ B cells in the pathogenesis of NASH-associated HCC. In this review, we make the case that future research is needed to investigate the potential of B-cell-targeting strategies for the treatment of NAFLD.
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Affiliation(s)
- Fanta Barrow
- Department of Integrative Biology and PhysiologyUniversity of MinnesotaMinneapolisMN
| | - Saad Khan
- Department of ImmunologyUniversity of TorontoTorontoONCanada
| | - Haiguang Wang
- Department of Integrative Biology and PhysiologyUniversity of MinnesotaMinneapolisMN
| | - Xavier S. Revelo
- Department of Integrative Biology and PhysiologyUniversity of MinnesotaMinneapolisMN,Center for ImmunologyUniversity of MinnesotaMinneapolisMN
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42
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Simand C, Keime C, Cayé A, Arfeuille C, Passet M, Kim R, Cavé H, Clappier E, Kastner P, Chan S, Heizmann B. Ikaros deficiency is associated with aggressive BCR-ABL1 B cell precursor acute lymphoblastic leukemia independent of the lineage and developmental origin. Haematologica 2021; 107:316-320. [PMID: 34587720 PMCID: PMC8719082 DOI: 10.3324/haematol.2021.279125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Indexed: 11/29/2022] Open
Affiliation(s)
- Célestine Simand
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France; Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France; Université de Strasbourg, Illkirch, France; Service d'Hématologie, Institut de Cancérologie Strasbourg Europe (ICANS), Strasbourg
| | - Céline Keime
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France; Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France; Université de Strasbourg, Illkirch
| | - Aurélie Cayé
- Département de Génétique, Assistance Publique des Hôpitaux de Paris (AP-HP), Hôpital Robert Debré, Paris, France; INSERM UMR_S1131, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris-Sorbonne-Cité, Paris
| | - Chloé Arfeuille
- Département de Génétique, Assistance Publique des Hôpitaux de Paris (AP-HP), Hôpital Robert Debré, Paris, France; INSERM UMR_S1131, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris-Sorbonne-Cité, Paris
| | - Marie Passet
- Université de Paris, Laboratory of Hematology, AP-HP, Hôpital Saint-Louis, Paris
| | - Rathana Kim
- Université de Paris, Laboratory of Hematology, AP-HP, Hôpital Saint-Louis, Paris
| | - Hélène Cavé
- Département de Génétique, Assistance Publique des Hôpitaux de Paris (AP-HP), Hôpital Robert Debré, Paris, France; INSERM UMR_S1131, Institut Universitaire d'Hématologie, Université Paris Diderot, Paris-Sorbonne-Cité, Paris
| | - Emmanuelle Clappier
- Université de Paris, Laboratory of Hematology, AP-HP, Hôpital Saint-Louis, Paris
| | - Philippe Kastner
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France; Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France; Université de Strasbourg, Illkirch, France; Faculté de Médecine, Université de Strasbourg, Strasbourg.
| | - Susan Chan
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France; Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France; Université de Strasbourg, Illkirch
| | - Beate Heizmann
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Institut National de la Santé et de la Recherche Médicale (INSERM), U1258, Illkirch, France; Centre National de la Recherche Scientifique (CNRS), UMR7104, Illkirch, France; Université de Strasbourg, Illkirch
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43
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Chen BM, Cheng TL, Roffler SR. Polyethylene Glycol Immunogenicity: Theoretical, Clinical, and Practical Aspects of Anti-Polyethylene Glycol Antibodies. ACS NANO 2021; 15:14022-14048. [PMID: 34469112 DOI: 10.1021/acsnano.1c05922] [Citation(s) in RCA: 172] [Impact Index Per Article: 57.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Polyethylene glycol (PEG) is a flexible, hydrophilic simple polymer that is physically attached to peptides, proteins, nucleic acids, liposomes, and nanoparticles to reduce renal clearance, block antibody and protein binding sites, and enhance the half-life and efficacy of therapeutic molecules. Some naïve individuals have pre-existing antibodies that can bind to PEG, and some PEG-modified compounds induce additional antibodies against PEG, which can adversely impact drug efficacy and safety. Here we provide a framework to better understand PEG immunogenicity and how antibodies against PEG affect pegylated drug and nanoparticles. Analysis of published studies reveals rules for predicting accelerated blood clearance of pegylated medicine and therapeutic liposomes. Experimental studies of anti-PEG antibody binding to different forms, sizes, and immobilization states of PEG are also provided. The widespread use of SARS-CoV-2 RNA vaccines that incorporate PEG in lipid nanoparticles make understanding possible effects of anti-PEG antibodies on pegylated medicines even more critical.
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Affiliation(s)
- Bing-Mae Chen
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Tian-Lu Cheng
- Center for Biomarkers and Biotech Drugs, Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Steve R Roffler
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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44
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de Porto AP, Liu Z, de Beer R, Florquin S, Roelofs JJTH, de Boer OJ, den Haan JMM, Hendriks RW, van 't Veer C, van der Poll T, de Vos AF. Bruton's Tyrosine Kinase-Mediated Signaling in Myeloid Cells Is Required for Protective Innate Immunity During Pneumococcal Pneumonia. Front Immunol 2021; 12:723967. [PMID: 34552589 PMCID: PMC8450579 DOI: 10.3389/fimmu.2021.723967] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/19/2021] [Indexed: 12/20/2022] Open
Abstract
Bruton’s tyrosine kinase (Btk) is a cytoplasmic kinase expressed in B cells and myeloid cells. It is essential for B cell development and natural antibody-mediated host defense against bacteria in humans and mice, but little is known about the role of Btk in innate host defense in vivo. Previous studies have indicated that lack of (natural) antibodies is paramount for impaired host defense against Streptococcus (S.) pneumoniae in patients and mice with a deficiency in functional Btk. In the present study, we re-examined the role of Btk in B cells and myeloid cells during pneumococcal pneumonia and sepsis in mice. The antibacterial defense of Btk-/- mice was severely impaired during pneumococcal pneumosepsis and restoration of natural antibody production in Btk-/- mice by transgenic expression of Btk specifically in B cells did not suffice to protect against infection. Btk-/- mice with reinforced Btk expression in MhcII+ cells, including B cells, dendritic cells and macrophages, showed improved antibacterial defense as compared to Btk-/- mice. Bacterial outgrowth in Lysmcre-Btkfl/Y mice was unaltered despite a reduced capacity of Btk-deficient alveolar macrophages to respond to pneumococci. Mrp8cre-Btkfl/Y mice with a neutrophil specific paucity in Btk expression, however, demonstrated impaired antibacterial defense. Neutrophils of Mrp8cre-Btkfl/Y mice displayed reduced release of granule content after pulmonary installation of lipoteichoic acid, a gram-positive bacterial cell wall component relevant for pneumococci. Moreover, Btk deficient neutrophils showed impaired degranulation and phagocytosis upon incubation with pneumococci ex vivo. Taken together, the results of our study indicate that besides regulating B cell-mediated immunity, Btk is critical for regulation of myeloid cell-mediated, and particularly neutrophil-mediated, innate host defense against S. pneumoniae in vivo.
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Affiliation(s)
- Alexander P de Porto
- Center for Experimental and Molecular Medicine (CEMM), Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Zhe Liu
- Center for Experimental and Molecular Medicine (CEMM), Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Amsterdam Infection and Immunity Institute (AI&II), Amsterdam University Medical Centers (UMC), Amsterdam, Netherlands
| | - Regina de Beer
- Center for Experimental and Molecular Medicine (CEMM), Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Amsterdam Infection and Immunity Institute (AI&II), Amsterdam University Medical Centers (UMC), Amsterdam, Netherlands
| | - Sandrine Florquin
- Department of Pathology, Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Joris J T H Roelofs
- Department of Pathology, Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Onno J de Boer
- Department of Pathology, Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Joke M M den Haan
- Department of Molecular Cell Biology and Immunology, Amsterdam University Medical Centers (UMC), Vrije Universiteit Amsterdam, Amsterdam, Netherlands
| | - Rudi W Hendriks
- Department of Pulmonary Medicine, Erasmus Medical Center Rotterdam, University Medical Center, Rotterdam, Netherlands
| | - Cornelis van 't Veer
- Center for Experimental and Molecular Medicine (CEMM), Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Amsterdam Infection and Immunity Institute (AI&II), Amsterdam University Medical Centers (UMC), Amsterdam, Netherlands
| | - Tom van der Poll
- Center for Experimental and Molecular Medicine (CEMM), Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Amsterdam Infection and Immunity Institute (AI&II), Amsterdam University Medical Centers (UMC), Amsterdam, Netherlands.,Division of Infectious Diseases, Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands
| | - Alex F de Vos
- Center for Experimental and Molecular Medicine (CEMM), Amsterdam University Medical Centers (UMC), Academic Medical Center, University of Amsterdam, Amsterdam, Netherlands.,Amsterdam Infection and Immunity Institute (AI&II), Amsterdam University Medical Centers (UMC), Amsterdam, Netherlands
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45
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Labarrere CA, Kassab GS. Pattern Recognition Proteins: First Line of Defense Against Coronaviruses. Front Immunol 2021; 12:652252. [PMID: 34630377 PMCID: PMC8494786 DOI: 10.3389/fimmu.2021.652252] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 08/31/2021] [Indexed: 01/08/2023] Open
Abstract
The rapid outbreak of COVID-19 caused by the novel coronavirus SARS-CoV-2 in Wuhan, China, has become a worldwide pandemic affecting almost 204 million people and causing more than 4.3 million deaths as of August 11 2021. This pandemic has placed a substantial burden on the global healthcare system and the global economy. Availability of novel prophylactic and therapeutic approaches are crucially needed to prevent development of severe disease leading to major complications both acutely and chronically. The success in fighting this virus results from three main achievements: (a) Direct killing of the SARS-CoV-2 virus; (b) Development of a specific vaccine, and (c) Enhancement of the host's immune system. A fundamental necessity to win the battle against the virus involves a better understanding of the host's innate and adaptive immune response to the virus. Although the role of the adaptive immune response is directly involved in the generation of a vaccine, the role of innate immunity on RNA viruses in general, and coronaviruses in particular, is mostly unknown. In this review, we will consider the structure of RNA viruses, mainly coronaviruses, and their capacity to affect the lungs and the cardiovascular system. We will also consider the effects of the pattern recognition protein (PRP) trident composed by (a) Surfactant proteins A and D, mannose-binding lectin (MBL) and complement component 1q (C1q), (b) C-reactive protein, and (c) Innate and adaptive IgM antibodies, upon clearance of viral particles and apoptotic cells in lungs and atherosclerotic lesions. We emphasize on the role of pattern recognition protein immune therapies as a combination treatment to prevent development of severe respiratory syndrome and to reduce pulmonary and cardiovascular complications in patients with SARS-CoV-2 and summarize the need of a combined therapeutic approach that takes into account all aspects of immunity against SARS-CoV-2 virus and COVID-19 disease to allow mankind to beat this pandemic killer.
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Affiliation(s)
| | - Ghassan S Kassab
- California Medical Innovations Institute, San Diego, CA, United States
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46
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X-linked immunodeficient (XID) mice exhibit high susceptibility to Cryptococcus gattii infection. Sci Rep 2021; 11:18397. [PMID: 34526536 PMCID: PMC8443669 DOI: 10.1038/s41598-021-97041-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Accepted: 08/19/2021] [Indexed: 12/12/2022] Open
Abstract
Cryptococcosis is an opportunistic disease caused by the fungus Cryptococcus neoformans and Cryptococcus gattii. It starts as a pulmonary infection that can spread to other organs, such as the brain, leading to the most serious occurrence of the disease, meningoencephalitis. The humoral response has already been described in limiting the progression of cryptococcosis where the B-1 cell seems to be responsible for producing natural IgM antibodies, crucial for combating fungal infections. The role of the B-1 cell in C. neoformans infection has been initially described, however the role of the humoral response of B-1 cells has not yet been evaluated during C. gattii infections. In the present study we tried to unravel this issue using XID mice, a murine model deficient in the Btk protein which compromises the development of B-1 lymphocytes. We use the XID mice compared to BALB/c mice that are sufficient for the B-1 population during C. gattii infection. Our model of chronic lung infection revealed that XID mice, unlike the sufficient group of B-1, had early mortality with significant weight loss, in addition to reduced levels of IgM and IgG specific to GXM isolated from the capsule of C. neoformans. In addition to this, we observed an increased fungal load in the blood and in the brain. We described an increase in the capsular size of C. gattii and the predominant presence of cytokines with a Th2 profile was also observed in these animals. Thus, the present study strongly points to a higher susceptibility of the XID mouse to C. gattii, which suggests that the presence of B-1 cells and anti-GXM antibodies is fundamental during the control of infection by C. gattii.
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CD5-Positive B Lymphocytes after Kidney Transplantation. Diagnostics (Basel) 2021; 11:diagnostics11091574. [PMID: 34573916 PMCID: PMC8470969 DOI: 10.3390/diagnostics11091574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/23/2021] [Accepted: 08/26/2021] [Indexed: 02/02/2023] Open
Abstract
Kidney transplantation is the treatment of choice for end-stage kidney diseases. Unfortunately, kidney allograft recipients rarely develop tolerance or accommodation and require life-long immunosuppression. Among many other regulatory mechanisms, CD5+ B lymphocytes (mainly B-1a) seem to be involved in the process of allograft acceptance. These cells are the major source of natural, low-affinity antibodies, which are polyreactive. Thus, we hypothesized that CD5+ B cells could be referred to as a biomarker in those patients who developed accommodation towards kidney allotransplant. In this study, 52 low-immunized kidney transplant recipients were evaluated for transplant outcome up to 8 y post-transplant. The follow up included anti-HLA antibodies, B cells phenotype and cytokines. We have identified a cohort of recipients who produced alloantibodies (Abs+), which was associated with increased levels of CD5+ B cells, mainly during the first year after transplantation but also later on. Importantly, creatinine levels were comparable between Abs+ and Abs− allorecipients at 2 years after the transplantation and graft survival rate was comparable between these groups even eight years post-transplant. So, it seems that despite the presence of alloantibodies the graft function was sustained when the level of CD5+ B cells was increased. Targeting CD5+ B cells may be a valuable therapeutic option to increase transplant success. The phenotype can be also tried as a biomarker to increase the effectiveness of individualized post-transplant treatments.
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Porsch F, Mallat Z, Binder CJ. Humoral immunity in atherosclerosis and myocardial infarction: from B cells to antibodies. Cardiovasc Res 2021; 117:2544-2562. [PMID: 34450620 DOI: 10.1093/cvr/cvab285] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/30/2021] [Accepted: 08/24/2021] [Indexed: 02/06/2023] Open
Abstract
Immune mechanisms are critically involved in the pathogenesis of atherosclerosis and its clinical manifestations. Associations of specific antibody levels and defined B cell subsets with cardiovascular disease activity in humans as well as mounting evidence from preclinical models demonstrate a role of B cells and humoral immunity in atherosclerotic cardiovascular disease. These include all aspects of B cell immunity, the generation of antigen-specific antibodies, antigen presentation and co-stimulation of T cells, as well as production of cytokines. Through their impact on adaptive and innate immune responses and the regulation of many other immune cells, B cells mediate both protective and detrimental effects in cardiovascular disease. Several antigens derived from (oxidised) lipoproteins, the vascular wall and classical autoantigens have been identified. The unique antibody responses they trigger and their relationship with atherosclerotic cardiovascular disease are reviewed. In particular, we focus on the different effector functions of specific IgM, IgG, and IgE antibodies and the cellular responses they trigger and highlight potential strategies to target B cell functions for therapy.
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Affiliation(s)
- Florentina Porsch
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
| | - Ziad Mallat
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge, United Kingdom.,INSERM U970, Paris Cardiovascular Research Centre, Paris, France.,Unversité Paris Descartes, Sorbonne Paris Cité, Paris France
| | - Christoph J Binder
- Department of Laboratory Medicine, Medical University of Vienna, Vienna, Austria
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Azevedo Portilho N, Scarfò R, Bertesago E, Ismailoglu I, Kyba M, Kobayashi M, Ditadi A, Yoshimoto M. B1 lymphocytes develop independently of Notch signaling during mouse embryonic development. Development 2021; 148:271231. [PMID: 34370006 PMCID: PMC8380455 DOI: 10.1242/dev.199373] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 07/08/2021] [Indexed: 11/20/2022]
Abstract
B1 lymphocytes are a small but unique component of the innate immune-like cells. However, their ontogenic origin is still a matter of debate. Although it is widely accepted that B1 cells originate early in fetal life, whether or not they arise from hematopoietic stem cells (HSCs) is still unclear. In order to shed light on the B1 cell origin, we set out to determine whether their lineage specification is dependent on Notch signaling, which is essential for the HSC generation and, therefore, all derivatives lineages. Using mouse embryonic stem cells (mESCs) to recapitulate murine embryonic development, we have studied the requirement for Notch signaling during the earliest B-cell lymphopoiesis and found that Rbpj-deficient mESCs are able to generate B1 cells. Their Notch independence was confirmed in ex vivo experiments using Rbpj-deficient embryos. In addition, we found that upregulation of Notch signaling induced the emergence of B2 lymphoid cells. Taken together, these findings indicate that control of Notch signaling dose is crucial for different B-cell lineage specification from endothelial cells and provides pivotal information for their in vitro generation from PSCs for therapeutic applications. This article has an associated ‘The people behind the papers’ interview. Summary: During development, the first B lymphocytes are produced in the absence of Notch signaling and, thus, independently from HSCs.
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Affiliation(s)
- Nathalia Azevedo Portilho
- Center for Stem Cell Research and Regenerative Medicine, Institute for Molecular Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Rebecca Scarfò
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Elisa Bertesago
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Ismail Ismailoglu
- Lillehei Heart Institute and Department of Pediatrics, University of Minnesota, Minneapolis, MN 55455, USA.,Genetics and Development Graduate Program, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Michael Kyba
- Lillehei Heart Institute and Department of Pediatrics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Michihiro Kobayashi
- Center for Stem Cell Research and Regenerative Medicine, Institute for Molecular Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Andrea Ditadi
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Momoko Yoshimoto
- Center for Stem Cell Research and Regenerative Medicine, Institute for Molecular Medicine, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
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50
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Amendt T, Ayoubi OE, Linder AT, Allies G, Young M, Setz CS, Jumaa H. Primary Immune Responses and Affinity Maturation Are Controlled by IgD. Front Immunol 2021; 12:709240. [PMID: 34434193 PMCID: PMC8381280 DOI: 10.3389/fimmu.2021.709240] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/15/2021] [Indexed: 01/17/2023] Open
Abstract
Mature B cells co-express IgM and IgD B cell antigen receptors (BCR) on their surface. While IgM BCR expression is already essential at early stages of development, the role of the IgD-class BCR remains unclear as most B cell functions appeared unchanged in IgD-deficient mice. Here, we show that IgD-deficient mice have an accelerated rate of B cell responsiveness as they activate antibody production within 24h after immunization, whereas wildtype (WT) animals required 3 days to activate primary antibody responses. Strikingly, soluble monovalent antigen suppresses IgG antibody production induced by multivalent antigen in WT mice. In contrast, IgD-deficient mice were not able to modulate IgG responses suggesting that IgD controls the activation rate of B cells and subsequent antibody production by sensing and distinguishing antigen-valences. Using an insulin-derived peptide we tested the role of IgD in autoimmunity. We show that primary autoreactive antibody responses are generated in WT and in IgD-deficient mice. However, insulin-specific autoantibodies were detected earlier and caused more severe symptoms of autoimmune diabetes in IgD-deficient mice as compared to WT mice. The rapid control of autoimmune diabetes in WT animals was associated with the generation of high-affinity IgM that protects insulin from autoimmune degradation. In IgD-deficient mice, however, the generation of high-affinity protective IgM is delayed resulting in prolonged autoimmune diabetes. Our data suggest that IgD is required for the transition from primary, highly autoreactive, to secondary antigen-specific antibody responses generated by affinity maturation.
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Affiliation(s)
| | | | | | | | | | | | - Hassan Jumaa
- Institute of Immunology, Ulm University Medical Center, Ulm, Germany
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