1
|
Zibandeh N, Li Z, Ogg G, Bottomley MJ. Cutaneous adaptive immunity and uraemia: a narrative review. Front Immunol 2024; 15:1464338. [PMID: 39399503 PMCID: PMC11466824 DOI: 10.3389/fimmu.2024.1464338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2024] [Accepted: 09/12/2024] [Indexed: 10/15/2024] Open
Abstract
Chronic kidney disease affects 1 in 10 people globally, with a prevalence twenty times that of cancer. A subset of individuals will progress to end-stage renal disease (ESRD) where renal replacement therapy is required to maintain health. Cutaneous disease, including xerosis and pruritus, are endemic amongst patients with ESRD. In the uraemia-associated immune deficiency of ESRD, impaired circulating immune responses contribute to increased infection risk and poorer vaccination response. Clinical manifestations of dysregulated adaptive immunity within the skin have been well-described and have been posited to play a role in cutaneous features of ESRD. However, our understanding of the mechanisms by which adaptive immunity within the skin is affected by uraemia is relatively limited. We provide an overview of how the cutaneous adaptive immune system is impacted both directly and indirectly by uraemia, highlighting that much work has been extrapolated from the circulating immune system and often has not been directly evaluated in the skin compartment. We identify knowledge gaps which may be addressed by future research. Ultimately, greater understanding of these pathways may facilitate novel therapeutic approaches to ameliorate widespread cutaneous symptomatology in ESRD.
Collapse
Affiliation(s)
- Noushin Zibandeh
- Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, United Kingdom
| | - Zehua Li
- Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, United Kingdom
| | - Graham Ogg
- Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, United Kingdom
- Department of Dermatology, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
- MRC Translational Immune Discovery Unit , University of Oxford, Oxford, United Kingdom
| | - Matthew J. Bottomley
- Chinese Academy of Medical Sciences Oxford Institute, University of Oxford, Oxford, United Kingdom
- Oxford Kidney and Transplant Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| |
Collapse
|
2
|
Le Maître M, Guerrier T, Collet A, Derhourhi M, Meneboo JP, Toussaint B, Bonnefond A, Villenet C, Sebda S, Bongiovanni A, Tardivel M, Simon M, Jendoubi M, Daunou B, Largy A, Figeac M, Dubucquoi S, Launay D. Characteristics and impact of infiltration of B-cells from systemic sclerosis patients in a 3D healthy skin model. Front Immunol 2024; 15:1373464. [PMID: 39185406 PMCID: PMC11341436 DOI: 10.3389/fimmu.2024.1373464] [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: 01/19/2024] [Accepted: 07/23/2024] [Indexed: 08/27/2024] Open
Abstract
Introduction In systemic sclerosis (SSc), B-cells are activated and present in the skin and lung of patients where they can interact with fibroblasts. The precise impact and mechanisms of the interaction of B-cells and fibroblasts at the tissular level are poorly studied. Objective We investigated the impact and mechanisms of B-cell/fibroblast interactions in cocultures between B-cells from patients with SSc and 3-dimensional reconstituted healthy skin model including fibroblasts, keratinocytes and extracellular matrix. Methods The quantification and description of the B-cell infiltration in 3D cocultures were performed using cells imagery strategy and cytometry. The effect of coculture on the transcriptome of B-cells and fibroblasts was studied with bulk and single-cell RNA sequencing approaches. The mechanisms of this interaction were studied by blocking key cytokines like IL-6 and TNF. Results We showed a significant infiltration of B-cells in the 3D healthy skin model. The amount but not the depth of infiltration was higher with B-cells from SSc patients and with activated B-cells. B-cell infiltrates were mainly composed of naïve and memory cells, whose frequencies differed depending on B-cells origin and activation state: infiltrated B-cells from patients with SSc showed an activated profile and an overexpression of immunoglobulin genes compared to circulating B-cells before infiltration. Our study has shown for the first time that activated B-cells modified the transcriptomic profile of both healthy and SSc fibroblasts, toward a pro-inflammatory (TNF and IL-17 signaling) and interferon profile, with a key role of the TNF pathway. Conclusion B-cells and 3D skin cocultures allowed the modelization of B-cells infiltration in tissues observed in SSc, uncovering an influence of the underlying disease and the activation state of B-cells. We showed a pro-inflammatory effect on skin fibroblasts and pro-activation effect on infiltrating B-cells during coculture. This reinforces the role of B-cells in SSc and provide potential targets for future therapeutic approach in this disease.
Collapse
Affiliation(s)
- Mathilde Le Maître
- Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, Lille, France
| | - Thomas Guerrier
- Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, Lille, France
| | - Aurore Collet
- Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, Lille, France
- CHU Lille, Institut d’Immunologie, Pôle de Biologie Pathologie Génétique, Lille, France
| | - Mehdi Derhourhi
- Inserm UMR1283, CNRS UMR8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, Lille University Hospital, Lille, France
- Université de Lille, Lille, France
| | - Jean-Pascal Meneboo
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 - UAR 2014 - PLBS, Lille, France
| | - Bénédicte Toussaint
- Inserm UMR1283, CNRS UMR8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, Lille University Hospital, Lille, France
- Université de Lille, Lille, France
| | - Amélie Bonnefond
- Inserm UMR1283, CNRS UMR8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, Lille University Hospital, Lille, France
- Université de Lille, Lille, France
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, United Kingdom
| | - Céline Villenet
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 - UAR 2014 - PLBS, Lille, France
| | - Shéhérazade Sebda
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 - UAR 2014 - PLBS, Lille, France
| | - Antonino Bongiovanni
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 - UAR 2014 - PLBS, Lille, France
| | - Meryem Tardivel
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 - UAR 2014 - PLBS, Lille, France
| | - Myriam Simon
- Service de Médecine Interne et d’Immunologie Clinique, Centre de Référence Des Maladies Auto-Immunes et Systémiques Rares du Nord et Nord-Ouest de France (CeRAINO), CHU Lille, Lille, France
| | - Manel Jendoubi
- Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, Lille, France
| | - Blanche Daunou
- Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, Lille, France
| | - Alexis Largy
- Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, Lille, France
| | - Martin Figeac
- Univ. Lille, CNRS, Inserm, CHU Lille, Institut Pasteur de Lille, US 41 - UAR 2014 - PLBS, Lille, France
| | - Sylvain Dubucquoi
- Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, Lille, France
- CHU Lille, Institut d’Immunologie, Pôle de Biologie Pathologie Génétique, Lille, France
| | - David Launay
- Univ. Lille, Inserm, CHU Lille, U1286 - INFINITE - Institute for Translational Research in Inflammation, Lille, France
- Service de Médecine Interne et d’Immunologie Clinique, Centre de Référence Des Maladies Auto-Immunes et Systémiques Rares du Nord et Nord-Ouest de France (CeRAINO), CHU Lille, Lille, France
| |
Collapse
|
3
|
Arora JK, Matangkasombut P, Charoensawan V, Opasawatchai A. Single-cell RNA sequencing reveals the expansion of circulating tissue-homing B cell subsets in secondary acute dengue viral infection. Heliyon 2024; 10:e30314. [PMID: 38818157 PMCID: PMC11137366 DOI: 10.1016/j.heliyon.2024.e30314] [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: 07/07/2023] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 06/01/2024] Open
Abstract
The roles of antibodies secreted by subsets of B cells in dengue virus (DENV) infection have been extensively studied, yet, the contribution of tissue-homing B cells to antiviral immunity remains unclear. In this study, we performed a comprehensive analysis of B cell subpopulations in peripheral blood samples from DENV-infected patients using single-cell RNA-sequencing (scRNA-seq) datasets and flow cytometry. We showed that plasma cells (PCs) and plasmablasts (PBs) were the predominant B cell populations during the acute phase of secondary natural DENV infection, but not in convalescent phase nor in healthy controls. Interestingly, these cells expressed proliferation, adhesion, and tissue-homing genes, including SELPLG, a homing marker of the skin, the initial infected site of DENV. Flow cytometry analysis confirmed a significant upregulation of cell surface expression of a cutaneous lymphocyte-associated antigen (CLA) encoded by SELPLG in PCs and PBs, compared to naive and memory B cells from the same patients. The analysis of an independent single-cell B-cell receptor sequencing (scBCR-seq) dataset of DENV-infected patients revealed that the peripheral blood PCs and PBs exhibited the highest clonal expansion in secondary DENV infection compared to other B cell subsets. These clonally expanded cells also expressed the highest levels of tissue-homing genes, including SELPLG. In addition, by utilizing a public scRNA-seq dataset of SARS-CoV2 infection, we demonstrated the upregulation of several tissue-homing genes in PCs and PBs. Our study provides evidence for the potential roles of tissue-homing B cell subsets in the context of immune responses against viral infections in humans.
Collapse
Affiliation(s)
- Jantarika Kumar Arora
- Doctor of Philosophy Program in Biochemistry (International Program), Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Ponpan Matangkasombut
- Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
- Single-cell Omics and Systems Biology of Diseases Research Unit, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Varodom Charoensawan
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
- Single-cell Omics and Systems Biology of Diseases Research Unit, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
- Integrative Computational BioScience (ICBS) Center, Mahidol University, Nakhon Pathom, 73170, Thailand
- Division of Medical Bioinformatics, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
- Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
- Siriraj Genomics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, 10700, Thailand
- School of Chemistry, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Anunya Opasawatchai
- Single-cell Omics and Systems Biology of Diseases Research Unit, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
- Integrative Computational BioScience (ICBS) Center, Mahidol University, Nakhon Pathom, 73170, Thailand
- Department of Oral Microbiology, Faculty of Dentistry, Mahidol University, Bangkok, 10400, Thailand
| |
Collapse
|
4
|
Rodríguez-Zhurbenko N, Hernández AM. The role of B-1 cells in cancer progression and anti-tumor immunity. Front Immunol 2024; 15:1363176. [PMID: 38629061 PMCID: PMC11019000 DOI: 10.3389/fimmu.2024.1363176] [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: 12/29/2023] [Accepted: 03/14/2024] [Indexed: 04/19/2024] Open
Abstract
In recent years, in addition to the well-established role of T cells in controlling or promoting tumor growth, a new wave of research has demonstrated the active involvement of B cells in tumor immunity. B-cell subsets with distinct phenotypes and functions play various roles in tumor progression. Plasma cells and activated B cells have been linked to improved clinical outcomes in several types of cancer, whereas regulatory B cells have been associated with disease progression. However, we are only beginning to understand the role of a particular innate subset of B cells, referred to as B-1 cells, in cancer. Here, we summarize the characteristics of B-1 cells and review their ability to infiltrate tumors. We also describe the potential mechanisms through which B-1 cells suppress anti-tumor immune responses and promote tumor progression. Additionally, we highlight recent studies on the protective anti-tumor function of B-1 cells in both mouse models and humans. Understanding the functions of B-1 cells in tumor immunity could pave the way for designing more effective cancer immunotherapies.
Collapse
Affiliation(s)
- Nely Rodríguez-Zhurbenko
- Immunobiology Department, Immunology and Immunotherapy Division, Center of Molecular Immunology, Habana, Cuba
| | - Ana M. Hernández
- Applied Genetics Group, Department of Biochemistry, Faculty of Biology, University of Habana, Habana, Cuba
| |
Collapse
|
5
|
Kung CJS, Hon KL, Tang MF, Cheng NS, Ng GWG, Leung CWM, Leung TF. Polymorphic markers of several immune regulatory genes modulate the susceptibility for eczema and related phenotypes in children. Transl Pediatr 2024; 13:436-446. [PMID: 38590376 PMCID: PMC10998998 DOI: 10.21037/tp-23-474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 01/18/2024] [Indexed: 04/10/2024] Open
Abstract
Background Eczema is associated with multiple genes regulating epidermal barrier functions and immunological pathways. However, their epistatic interactions are not well studied. This cross-sectional study investigated the relationship between childhood eczema phenotypes and single-nucleotide polymorphisms (SNPs) of immune regulatory genes. Methods One thousand three hundred and twenty-nine Chinese eczematous children and 1,179 non-allergic controls were recruited. Nine SNPs of immune regulatory genes signal transducer and activator of transcription 3 (STAT3), interleukin-10 (IL10), transforming growth factor-beta 1 (TGFB1), and IL-6 receptor (IL6R) were genotyped by TaqMan genotyping assays. Logistic regression was used to analyze the associations between SNPs and eczema phenotypes. Generalized multifactor dimensionality reduction (GMDR) was used to examine epistatic interactions among these SNPs as well as those reported by our group [filaggrin (FLG) and 11q13] for eczema phenotypes. Results TGFB1_rs1800469 was found to be associated with eczema [odds ratio (OR), 0.82; 95% confidence interval (CI): 0.73-0.92; P=0.001], atopic eczema (OR, 0.83; 95% CI: 0.72-0.95; P=0.009) and allergic rhinitis (OR, 0.84; 95% CI: 0.74-0.95; P=0.005). We also found a trend between IL10_rs1800872 and increased total immunoglobulin E (IgE) levels (P=0.009). Epistatic interaction among IL10_rs3021094, TGFB1_rs1800469, IL6R_rs2228145, and STAT3_rs4796793 were found for total IgE [testing accuracy (TA), 0.551; cross-validation consistency (CVC), 10; P=0.014]. Mean log-transformed total IgE (logIgE) levels in high-risk cases, low-risk cases, high-risk controls, and low-risk controls were 2.75, 2.60, 1.90, and 1.81 respectively (P=0.019 for trend). Conclusions Functional TGFB1 polymorphism is associated with both eczema and allergic rhinitis, suggesting the role of TGF-β1 in allergy susceptibility. IL10 may be associated with increased total IgE levels. Interaction among immune regulatory genes modulates total IgE levels.
Collapse
Affiliation(s)
- Charmaine Jeng Sum Kung
- Department of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Kam Lun Hon
- Department of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Man Fung Tang
- Department of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong, China
| | - Nam Sze Cheng
- Department of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | - Gigi Wing Gi Ng
- Department of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
| | | | - Ting Fan Leung
- Department of Paediatrics, Prince of Wales Hospital, The Chinese University of Hong Kong, Hong Kong, China
- Hong Kong Hub of Paediatric Excellence, The Chinese University of Hong Kong, Hong Kong, China
| |
Collapse
|
6
|
Lee EG, Oh JE. From neglect to spotlight: the underappreciated role of B cells in cutaneous inflammatory diseases. Front Immunol 2024; 15:1328785. [PMID: 38426103 PMCID: PMC10902158 DOI: 10.3389/fimmu.2024.1328785] [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: 10/27/2023] [Accepted: 01/30/2024] [Indexed: 03/02/2024] Open
Abstract
The skin, covering our entire body as its largest organ, manifests enormous complexities and a profound interplay of systemic and local responses. In this heterogeneous domain, B cells were considered strangers. Yet, recent studies have highlighted their existence in the skin and their distinct role in modulating cutaneous immunity across various immune contexts. Accumulating evidence is progressively shedding light on the significance of B cells in maintaining skin health and in skin disorders. Herein, we integrate current insights on the systemic and local contributions of B cells in three prevalent inflammatory skin conditions: Pemphigus Vulgaris (PV), Systemic Lupus Erythematosus (SLE), and Atopic Dermatitis (AD), underscoring the previously underappreciated importance of B cells within skin immunity. Moreover, we address the potential adverse effects of current treatments used for skin diseases, emphasizing their unintentional consequences on B cells. These comprehensive approaches may pave the way for innovative therapeutic strategies that effectively address the intricate nature of skin disorders.
Collapse
Affiliation(s)
- Eun-Gang Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Ji Eun Oh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
- BioMedical Research Center, KAIST, Daejeon, Republic of Korea
| |
Collapse
|
7
|
Zheremyan EA, Ustiugova AS, Karamushka NM, Uvarova AN, Stasevich EM, Bogolyubova AV, Kuprash DV, Korneev KV. Breg-Mediated Immunoregulation in the Skin. Int J Mol Sci 2024; 25:583. [PMID: 38203754 PMCID: PMC10778726 DOI: 10.3390/ijms25010583] [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: 11/27/2023] [Revised: 12/19/2023] [Accepted: 12/23/2023] [Indexed: 01/12/2024] Open
Abstract
Wound healing is a complex process involving a coordinated series of events aimed at restoring tissue integrity and function. Regulatory B cells (Bregs) are a subset of B lymphocytes that play an essential role in fine-tuning immune responses and maintaining immune homeostasis. Recent studies have suggested that Bregs are important players in cutaneous immunity. This review summarizes the current understanding of the role of Bregs in skin immunity in health and pathology, such as diabetes, psoriasis, systemic sclerosis, cutaneous lupus erythematosus, cutaneous hypersensitivity, pemphigus, and dermatomyositis. We discuss the mechanisms by which Bregs maintain tissue homeostasis in the wound microenvironment through the promotion of angiogenesis, suppression of effector cells, and induction of regulatory immune cells. We also mention the potential clinical applications of Bregs in promoting wound healing, such as the use of adoptive Breg transfer.
Collapse
Affiliation(s)
- Elina A. Zheremyan
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Alina S. Ustiugova
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Nina M. Karamushka
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
- Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Aksinya N. Uvarova
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | - Ekaterina M. Stasevich
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
| | | | - Dmitry V. Kuprash
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
- Faculty of Biology, Lomonosov Moscow State University, 119234 Moscow, Russia
| | - Kirill V. Korneev
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991 Moscow, Russia
- National Research Center for Hematology, 125167 Moscow, Russia
| |
Collapse
|
8
|
Suchanek O, Ferdinand JR, Tuong ZK, Wijeyesinghe S, Chandra A, Clauder AK, Almeida LN, Clare S, Harcourt K, Ward CJ, Bashford-Rogers R, Lawley T, Manz RA, Okkenhaug K, Masopust D, Clatworthy MR. Tissue-resident B cells orchestrate macrophage polarisation and function. Nat Commun 2023; 14:7081. [PMID: 37925420 PMCID: PMC10625551 DOI: 10.1038/s41467-023-42625-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 10/17/2023] [Indexed: 11/06/2023] Open
Abstract
B cells play a central role in humoral immunity but also have antibody-independent functions. Studies to date have focused on B cells in blood and secondary lymphoid organs but whether B cells reside in non-lymphoid organs (NLO) in homeostasis is unknown. Here we identify, using intravenous labeling and parabiosis, a bona-fide tissue-resident B cell population in lung, liver, kidney and urinary bladder, a substantial proportion of which are B-1a cells. Tissue-resident B cells are present in neonatal tissues and also in germ-free mice NLOs, albeit in lower numbers than in specific pathogen-free mice and following co-housing with 'pet-store' mice. They spatially co-localise with macrophages and regulate their polarization and function, promoting an anti-inflammatory phenotype, in-part via interleukin-10 production, with effects on bacterial clearance during urinary tract infection. Thus, our data reveal a critical role for tissue-resident B cells in determining the homeostatic 'inflammatory set-point' of myeloid cells, with important consequences for tissue immunity.
Collapse
Affiliation(s)
- Ondrej Suchanek
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK
- Cambridge University Hospitals NHS Foundation Trust, and NIHR Cambridge Biomedical Research Centre, Cambridge, UK
| | - John R Ferdinand
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK
| | - Zewen K Tuong
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK
| | - Sathi Wijeyesinghe
- Department of Microbiology and Immunology, Centre for Immunology, University of Minnesota, Minneapolis, MI, USA
| | - Anita Chandra
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - Ann-Katrin Clauder
- Institute for Systemic Inflammation Research, University of Luebeck, Luebeck, Germany
| | - Larissa N Almeida
- Institute for Systemic Inflammation Research, University of Luebeck, Luebeck, Germany
| | - Simon Clare
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | | | - Christopher J Ward
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK
| | | | - Trevor Lawley
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Rudolf A Manz
- Institute for Systemic Inflammation Research, University of Luebeck, Luebeck, Germany
| | - Klaus Okkenhaug
- Department of Pathology, University of Cambridge, Cambridge, UK
| | - David Masopust
- Department of Microbiology and Immunology, Centre for Immunology, University of Minnesota, Minneapolis, MI, USA
| | - Menna R Clatworthy
- Molecular Immunity Unit, University of Cambridge Department of Medicine, Cambridge, UK.
- Cambridge University Hospitals NHS Foundation Trust, and NIHR Cambridge Biomedical Research Centre, Cambridge, UK.
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK.
| |
Collapse
|
9
|
Suchanek O, Clatworthy MR. Homeostatic role of B-1 cells in tissue immunity. Front Immunol 2023; 14:1106294. [PMID: 37744333 PMCID: PMC10515722 DOI: 10.3389/fimmu.2023.1106294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 02/27/2023] [Indexed: 09/26/2023] Open
Abstract
To date, studies of tissue-resident immunity have mainly focused on innate immune cells and T cells, with limited data on B cells. B-1 B cells are a unique subset of B cells with innate-like properties, enriched in murine pleural and peritoneal cavities and distinct from conventional B-2 cells in their ontogeny, phenotype and function. Here we discuss how B-1 cells represent exemplar tissue-resident immune cells, summarizing the evidence for their long-term persistence & self-renewal within tissues, differential transcriptional programming shaped by organ-specific environmental cues, as well as their tissue-homeostatic functions. Finally, we review the emerging data supporting the presence and homeostatic role of B-1 cells across non-lymphoid organs (NLOs) both in mouse and human.
Collapse
Affiliation(s)
- Ondrej Suchanek
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
- NIHR Cambridge Biomedical Research Centre, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Menna R. Clatworthy
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom
- NIHR Cambridge Biomedical Research Centre, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
- Wellcome Sanger Institute, Hinxton, United Kingdom
| |
Collapse
|
10
|
Satitsuksanoa P, Iwasaki S, Boersma J, Bel Imam M, Schneider SR, Chang I, van de Veen W, Akdis M. B cells: The many facets of B cells in allergic diseases. J Allergy Clin Immunol 2023; 152:567-581. [PMID: 37247640 DOI: 10.1016/j.jaci.2023.05.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 03/30/2023] [Accepted: 05/16/2023] [Indexed: 05/31/2023]
Abstract
B cells play a key role in our immune system through their ability to produce antibodies, suppress a proinflammatory state, and contribute to central immune tolerance. We aim to provide an in-depth knowledge of the molecular biology of B cells, including their origin, developmental process, types and subsets, and functions. In allergic diseases, B cells are well known to induce and maintain immune tolerance through the production of suppressor cytokines such as IL-10. Similarly, B cells protect against viral infections such as severe acute respiratory syndrome coronavirus 2 that caused the recent coronavirus disease 2019 pandemic. Considering the unique and multifaceted functions of B cells, we hereby provide a comprehensive overview of the current knowledge of B-cell biology and its clinical applications in allergic diseases, organ transplantation, and cancer.
Collapse
Affiliation(s)
- Pattraporn Satitsuksanoa
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland.
| | - Sayuri Iwasaki
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland; Wageningen University & Research, Wageningen, The Netherlands
| | - Jolien Boersma
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland; Wageningen University & Research, Wageningen, The Netherlands
| | - Manal Bel Imam
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
| | - Stephan R Schneider
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
| | - Iris Chang
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland; Sean N. Parker Centre for Allergy and Asthma Research, Department of Medicine, Stanford University, Palo Alto, Calif
| | - Willem van de Veen
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zürich, Davos, Switzerland.
| |
Collapse
|
11
|
Aihara F, Wang Y, Belkina AC, Fearns R, Mizgerd JP, Feng F, Kepler TB. Diversity of B Cell Populations and Ig Repertoire in Human Lungs. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2023; 211:486-496. [PMID: 37314411 PMCID: PMC10352589 DOI: 10.4049/jimmunol.2200340] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 05/25/2023] [Indexed: 06/15/2023]
Abstract
The human lung carries a unique microbiome adapted to the air-filled, mucous-lined environment, the presence of which requires an immune system capable of recognizing harmful populations while preventing reactions toward commensals. B cells in the lung play a key role in pulmonary immunity, generating Ag-specific Abs, as well as cytokine secretion for immune activation and regulation. In this study, we compared B cell subsets in human lungs versus circulating cells by analyzing patient-paired lung and blood samples. We found a significantly smaller pool of CD19+, CD20+ B cells in the lung relative to the blood. CD27+, IgD-, class-switched memory B cells (Bmems) composed a larger proportion of the pool of pulmonary B cells. The residency marker CD69 was also significantly higher in the lung. We also sequenced the Ig V region genes (IgVRGs) of class-switched Bmems that do, or do not, express CD69. We observed the IgVRGs of pulmonary Bmems to be as heavily mutated from the unmutated common ancestor as those in circulation. Furthermore, we found progenies within a quasi-clone can gain or lose CD69 expression, regardless of whether the parent clone expressed the residency marker. Overall, our results show that despite its vascularized nature, human lungs carry a unique proportion of B cell subsets. The IgVRGs of pulmonary Bmems are as diverse as those in blood, and progenies of Bmems retain the ability to gain or lose residency.
Collapse
Affiliation(s)
- Fumiaki Aihara
- Department of Microbiology, Boston University, Boston, MA
| | - Yumei Wang
- Department of Microbiology, Boston University, Boston, MA
| | | | - Rachel Fearns
- Department of Microbiology, Boston University, Boston, MA
| | | | - Feng Feng
- Department of Microbiology, Boston University, Boston, MA
| | | |
Collapse
|
12
|
Elieh-Ali-Komi D, Metz M, Kolkhir P, Kocatürk E, Scheffel J, Frischbutter S, Terhorst-Molawi D, Fox L, Maurer M. Chronic urticaria and the pathogenic role of mast cells. Allergol Int 2023:S1323-8930(23)00047-3. [PMID: 37210251 DOI: 10.1016/j.alit.2023.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 04/24/2023] [Indexed: 05/22/2023] Open
Abstract
The signs and symptoms of chronic urticaria (CU) are caused by the activation and degranulation of skin mast cells (MCs). Recent studies have added to our understanding of how and why skin MCs are involved and different in CU. Also, novel and relevant mechanisms of MC activation in CU have been identified and characterized. Finally, the use of MC-targeted and MC mediator-specific treatments has helped to better define the role of the skin environment, the contribution of specific MC mediators, and the relevance of MC crosstalk with other cells in the pathogenesis of CU. Here, we review these recent findings and their impact on our understanding of CU, with a focus on chronic spontaneous urticaria (CSU). Also, we highlight open questions, issues of controversy, and unmet needs, and we suggest what studies should be performed moving forward.
Collapse
Affiliation(s)
- Daniel Elieh-Ali-Komi
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany
| | - Martin Metz
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany
| | - Pavel Kolkhir
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany
| | - Emek Kocatürk
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany; Department of Dermatology, Koç University School of Medicine, Istanbul, Turkey
| | - Jörg Scheffel
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany
| | - Stefan Frischbutter
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany
| | - Dorothea Terhorst-Molawi
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany
| | - Lena Fox
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany
| | - Marcus Maurer
- Institute of Allergology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany; Allergology and Immunology, Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Berlin, Germany.
| |
Collapse
|
13
|
Oliveira DS, Castro AR, Ruano L. Recurrent skin infections associated with natalizumab treatment. Neurol Sci 2023; 44:1093-1095. [PMID: 36331655 DOI: 10.1007/s10072-022-06481-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Daniela Santos Oliveira
- Serviço de Neurologia, Centro Hospitalar de Entre o Douro e Vouga, Rua Dr. Cândido Pinho, No. 5, 4520-220, Santa Maria da Feira, Portugal.
| | - Ana Rita Castro
- Serviço de Neurologia, Centro Hospitalar de Entre o Douro e Vouga, Rua Dr. Cândido Pinho, No. 5, 4520-220, Santa Maria da Feira, Portugal
| | - Luís Ruano
- Serviço de Neurologia, Centro Hospitalar de Entre o Douro e Vouga, Rua Dr. Cândido Pinho, No. 5, 4520-220, Santa Maria da Feira, Portugal
- Instituto de Saúde Pública, Universidade do Porto, Rua das Taipas, No. 135, 4050-600, Porto, Portugal
- Laboratório para a Investigação Integrativa e Translacional em Saúde Populacional (ITR), Rua das Taipas, No. 135, 4050-600, Porto, Portugal
- Faculdade de Medicina da Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319, Porto, Portugal
| |
Collapse
|
14
|
Baldassarro VA, Giraldi V, Giuliani A, Moretti M, Pagnotta G, Flagelli A, Clavenzani P, Lorenzini L, Giardino L, Focarete ML, Giacomini D, Calzà L. Poly(l-lactic acid) Scaffold Releasing an α 4β 1 Integrin Agonist Promotes Nonfibrotic Skin Wound Healing in Diabetic Mice. ACS APPLIED BIO MATERIALS 2022; 6:296-308. [PMID: 36542733 PMCID: PMC9937562 DOI: 10.1021/acsabm.2c00890] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Skin wound healing is a highly complex process that continues to represent a major medical problem, due to chronic nonhealing wounds in several classes of patients and to possible fibrotic complications, which compromise the function of the dermis. Integrins are transmembrane receptors that play key roles in this process and that offer a recognized druggable target. Our group recently synthesized GM18, a specific agonist for α4β1, an integrin that plays a role in skin immunity and in the migration of neutrophils, also regulating the differentiated state of fibroblasts. GM18 can be combined with poly(l-lactic acid) (PLLA) nanofibers to provide a controlled release of this agonist, resulting in a medication particularly suitable for skin wounds. In this study, we first optimized a GM18-PLLA nanofiber combination with a 7-day sustained release for use as skin wound medication. When tested in an experimental pressure ulcer in diabetic mice, a model for chronic nonhealing wounds, both soluble and GM18-PLLA formulations accelerated wound healing, as well as regulated extracellular matrix synthesis toward a nonfibrotic molecular signature. In vitro experiments using the adhesion test showed fibroblasts to be a principal GM18 cellular target, which we then used as an in vitro model to explore possible mechanisms of GM18 action. Our results suggest that the observed antifibrotic behavior of GM18 may exert a dual action on fibroblasts at the α4β1 binding site and that GM18 may prevent profibrotic EDA-fibronectin-α4β1 binding and activate outside-in signaling of the ERK1/2 pathways, a critical component of the wound healing process.
Collapse
Affiliation(s)
- Vito Antonio Baldassarro
- Department
of Veterinary Medical Science, University
of Bologna, 50 Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy,Interdepartmental
Center for Industrial Research in Health Sciences and Technologies, University of Bologna, 41/E Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy
| | - Valentina Giraldi
- Interdepartmental
Center for Industrial Research in Health Sciences and Technologies, University of Bologna, 41/E Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy
| | - Alessandro Giuliani
- Department
of Veterinary Medical Science, University
of Bologna, 50 Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy
| | - Marzia Moretti
- Department
of Veterinary Medical Science, University
of Bologna, 50 Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy
| | - Giorgia Pagnotta
- Department
of Chemistry “Giacomo Ciamician” and INSTM UdR of Bologna, University of Bologna, 2 via Selmi, 40126 Bologna, Italy
| | - Alessandra Flagelli
- Interdepartmental
Center for Industrial Research in Health Sciences and Technologies, University of Bologna, 41/E Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy
| | - Paolo Clavenzani
- Department
of Veterinary Medical Science, University
of Bologna, 50 Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy
| | - Luca Lorenzini
- Department
of Veterinary Medical Science, University
of Bologna, 50 Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy,Interdepartmental
Center for Industrial Research in Health Sciences and Technologies, University of Bologna, 41/E Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy
| | - Luciana Giardino
- Department
of Veterinary Medical Science, University
of Bologna, 50 Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy,Interdepartmental
Center for Industrial Research in Health Sciences and Technologies, University of Bologna, 41/E Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy,IRET
Foundation, 41/E Via
Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy
| | - Maria Letizia Focarete
- Interdepartmental
Center for Industrial Research in Health Sciences and Technologies, University of Bologna, 41/E Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy,Department
of Chemistry “Giacomo Ciamician” and INSTM UdR of Bologna, University of Bologna, 2 via Selmi, 40126 Bologna, Italy
| | - Daria Giacomini
- Interdepartmental
Center for Industrial Research in Health Sciences and Technologies, University of Bologna, 41/E Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy,Department
of Chemistry “Giacomo Ciamician” and INSTM UdR of Bologna, University of Bologna, 2 via Selmi, 40126 Bologna, Italy,
| | - Laura Calzà
- Interdepartmental
Center for Industrial Research in Health Sciences and Technologies, University of Bologna, 41/E Via Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy,IRET
Foundation, 41/E Via
Tolara di Sopra, 40064 Ozzano Emilia, Bologna, Italy,Department
of Pharmacy and BioTechnology, University
of Bologna, 15 Via San
Donato, 40127 Bologna, Italy,
| |
Collapse
|
15
|
Abstract
Barrier tissues are the primary site of infection for pathogens likely to cause future pandemics. Tissue-resident lymphocytes can rapidly detect pathogens upon infection of barrier tissues and are critical in preventing viral spread. However, most vaccines fail to induce tissue-resident lymphocytes and are instead reliant on circulating antibodies to mediate protective immunity. Circulating antibody titers wane over time following vaccination leaving individuals susceptible to breakthrough infections by variant viral strains that evade antibody neutralization. Memory B cells were recently found to establish tissue residence following infection of barrier tissues. Here, we summarize emerging evidence for the importance of tissue-resident memory B cells in the establishment of protective immunity against viral and bacterial challenge. We also discuss the role of tissue-resident memory B cells in regulating the progression of non-infectious diseases. Finally, we examine new approaches to develop vaccines capable of eliciting barrier immunity.
Collapse
Affiliation(s)
- Changfeng Chen
- Division of Allergy and Immunology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Brian J Laidlaw
- Division of Allergy and Immunology, Department of Medicine, Washington University School of Medicine, St. Louis, MO, United States.
| |
Collapse
|
16
|
Matsumura Y, Watanabe R, Fujimoto M. Suppressive mechanisms of regulatory B cells in mice and humans. Int Immunol 2022; 35:55-65. [PMID: 36153768 PMCID: PMC9918854 DOI: 10.1093/intimm/dxac048] [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: 08/05/2022] [Accepted: 09/23/2022] [Indexed: 11/14/2022] Open
Abstract
B cells include immune-suppressive fractions, called regulatory B cells (Bregs), which regulate inflammation primarily through an interleukin 10 (IL-10)-mediated inhibitory mechanism. Several B-cell fractions have been reported as IL-10-producing Bregs in murine disease models and human inflammatory responses including autoimmune diseases, infectious diseases, cancer and organ-transplant rejection. Although the suppressive functions of Bregs have been explored through the hallmark molecule IL-10, inhibitory cytokines and membrane-binding molecules other than IL-10 have also been demonstrated to contribute to Breg activities. Transcription factors and surface antigens that are characteristically expressed in Bregs are also being elucidated. Nevertheless, defining Bregs is still challenging because their active periods and differentiation stages vary among disease models. The identity of the diverse Breg fractions is also under debate. In the first place, since regulatory functions of Bregs are mostly evaluated by ex vivo stimulation, the actual in vivo phenotypes and functions may not be reflected by the ex vivo observations. In this article, we provide a historical overview of studies that established the characteristics of Bregs and review the various suppressive mechanisms that have been reported to be used by Bregs in murine and human disease conditions. We are only part-way through but the common phenotypes and functions of Bregs are still emerging.
Collapse
Affiliation(s)
- Yutaka Matsumura
- Department of Dermatology, Graduate School of Medicine, Faculty of Medicine, Osaka University, Osaka, 565-0871, Japan
| | - Rei Watanabe
- Department of Dermatology, Graduate School of Medicine, Faculty of Medicine, Osaka University, Osaka, 565-0871, Japan,Department of Integrative Medicine for Allergic and Immunological Diseases, Graduate School of Medicine/Faculty of Medicine, Osaka University, Osaka, 565-0871, Japan
| | | |
Collapse
|
17
|
Abstract
Epithelial barriers, which include the gastrointestinal, respiratory, and genitourinary mucosa, compose the body’s front line of defense. Since barrier tissues are persistently exposed to microbial challenges, a rapid response that can deal with diverse invading pathogens is crucial. Because B cells have been perceived as indirectly contributing to immune responses through antibody production, B cells functioning in the peripheral organs have been outside the scope of researchers. However, recent evidence supports the existence of tissue-resident memory B cells (BRMs) in the lungs. This population’s defensive response was stronger and faster than that of their circulating counterparts and could resist heterogeneous strains. With such traits, BRMs could be a promising target for vaccine design, but much about them remains to be revealed, including their locations, origin, specific markers, and the mechanisms of their establishment and maintenance. There is evidence for resident B cells in organs other than the lungs, suggesting that B cells are directly involved in the immune reactions of multiple non-lymphoid organs. This review summarizes the history of the discovery of BRMs and discusses important unresolved questions. Unique characteristics of humoral immunity that play an important role in the peripheral organs will be described briefly. Future research on B cells residing in non-lymphoid organs will provide new insights to help solve major problems regarding human health.
Collapse
Affiliation(s)
- Choong Man Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
| | - Ji Eun Oh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
- BioMedical Research Center, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea
- *Correspondence: Ji Eun Oh,
| |
Collapse
|
18
|
Abstract
The bladder is a major component of the urinary tract, an organ system that expels metabolic waste and excess water, which necessitates proximity to the external environment and its pathogens. It also houses a commensal microbiome. Therefore, its tissue immunity must resist pathogen invasion while maintaining tolerance to commensals. Bacterial infection of the bladder is common, with half of women globally experiencing one or more episodes of cystitis in their lifetime. Despite this, our knowledge of bladder immunity, particularly in humans, is incomplete. Here we consider the current view of tissue immunity in the bladder, with a focus on defense against infection. The urothelium has robust immune functionality, and its defensive capabilities are supported by resident immune cells, including macrophages, dendritic cells, natural killer cells, and γδ T cells. We discuss each in turn and consider why adaptive immune responses are often ineffective in preventing recurrent infection, as well as areas of priority for future research.
Collapse
Affiliation(s)
- Georgina S Bowyer
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom;
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
- Cambridge Institute of Therapeutic Immunology and Infectious Diseases, University of Cambridge, Cambridge, United Kingdom
| | - Kevin W Loudon
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom;
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
- Cambridge Institute of Therapeutic Immunology and Infectious Diseases, University of Cambridge, Cambridge, United Kingdom
| | - Ondrej Suchanek
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom;
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
- Cambridge Institute of Therapeutic Immunology and Infectious Diseases, University of Cambridge, Cambridge, United Kingdom
| | - Menna R Clatworthy
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge, United Kingdom;
- MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
- Cambridge Institute of Therapeutic Immunology and Infectious Diseases, University of Cambridge, Cambridge, United Kingdom
- Cellular Genetics, Wellcome Sanger Institute, Hinxton, United Kingdom
| |
Collapse
|
19
|
Update on B Cell Response in Periodontitis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1373:175-193. [DOI: 10.1007/978-3-030-96881-6_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
20
|
Nurzat Y, Su W, Min P, Li K, Xu H, Zhang Y. Identification of Therapeutic Targets and Prognostic Biomarkers Among Integrin Subunits in the Skin Cutaneous Melanoma Microenvironment. Front Oncol 2021; 11:751875. [PMID: 34660316 PMCID: PMC8514842 DOI: 10.3389/fonc.2021.751875] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 09/09/2021] [Indexed: 12/19/2022] Open
Abstract
The roles of different integrin alpha/beta (ITGA/ITGB) subunits in skin cutaneous melanoma (SKCM) and their underlying mechanisms of action remain unclear. Oncomine, UALCAN, GEPIA, STRING, GeneMANIA, cBioPortal, TIMER, TRRUST, and Webgestalt analysis tools were used. The expression levels of ITGA3, ITGA4, ITGA6, ITGA10, ITGB1, ITGB2, ITGB3, ITGB4, and ITGB7 were significantly increased in SKCM tissues. The expression levels of ITGA1, ITGA4, ITGA5, ITGA8, ITGA9, ITGA10, ITGB1, ITGB2, ITGB3, ITGB5, ITGB6 and ITGB7 were closely associated with SKCM metastasis. The expression levels of ITGA1, ITGA4, ITGB1, ITGB2, ITGB6, and ITGB7 were closely associated with the pathological stage of SKCM. The expression levels of ITGA6 and ITGB7 were closely associated with disease-free survival time in SKCM, and the expression levels of ITGA6, ITGA10, ITGB2, ITGB3, ITGB6, ITGB7, and ITGB8 were markedly associated with overall survival in SKCM. We also found significant correlations between the expression of integrin subunits and the infiltration of six types of immune cells (B cells, CD8+ T cells, CD4+T cells, macrophages, neutrophils, and dendritic cells). Finally, Gene Ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were performed, and protein-protein interaction (PPI) networks were constructed. We have identified abnormally-expressed genes and gene regulatory networks associated with SKCM, improving understanding of the underlying pathogenesis of SKCM.
Collapse
Affiliation(s)
- Yeltai Nurzat
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Weijie Su
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Peiru Min
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Ke Li
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Heng Xu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| | - Yixin Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
| |
Collapse
|
21
|
McGettigan SE, Debes GF. Immunoregulation by antibody secreting cells in inflammation, infection, and cancer. Immunol Rev 2021; 303:103-118. [PMID: 34145601 PMCID: PMC8387433 DOI: 10.1111/imr.12991] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 12/11/2022]
Abstract
Antibody-secreting cells (ASCs) are considered work horses of the humoral immune response for their tireless effort to produce large amounts of antibodies that fulfill an array of functions in host defense, inflammation, and maintenance of homeostasis. While traditionally considered largely senescent cells, surprising recent findings demonstrate that subsets of ASCs downmodulate ongoing immune responses independent of antibody formation. Such regulatory ASCs produce IL-10 or IL-35 and are implicated in maintaining tissue and immune homeostasis. They also serve to suppress pathogenic leukocytes in infection, allergy, and inflammatory diseases that affect tissues, such as the central nervous system and the respiratory tract. Additionally, regulatory ASCs infiltrate various cancer types and restrict effective anti-tumor T cell responses. While incompletely understood, there is significant overlap in factors that control ASC differentiation, IL-10 expression by B cells and the generation of ASCs that secrete both antibodies and IL-10. In this review, we will cover the biology, phenotype, generation, maintenance and function of regulatory ASCs in various tissues under pathological and steady states. An improved understanding of the development of regulatory ASCs and their biological roles will be critical for generating novel ASC-targeted therapies for the treatment of inflammatory diseases, infection, and cancer.
Collapse
Affiliation(s)
- Shannon E. McGettigan
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107
| | - Gudrun F. Debes
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, 19107
| |
Collapse
|
22
|
Egbuniwe IU, Harris RJ, Nakamura M, Nestle FO, Akbar AN, Karagiannis SN, Lacy KE. B Lymphocytes Accumulate and Proliferate in Human Skin at Sites of Cutaneous Antigen Challenge. J Invest Dermatol 2021; 142:726-731.e4. [PMID: 34450137 PMCID: PMC8880055 DOI: 10.1016/j.jid.2021.06.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/21/2021] [Accepted: 06/30/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Isioma U Egbuniwe
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom; Translational Medical Sciences Unit, School of Medicine, University of Nottingham Biodiscovery Institute, Nottingham, United Kingdom
| | - Robert J Harris
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom
| | - Mano Nakamura
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom
| | - Frank O Nestle
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom; Sanofi Immunology and Inflammation Research Therapeutic Area, Cambridge, Massachusetts, USA
| | - Arne N Akbar
- Division of Infection and Immunity, University College London, London, United Kingdom
| | - Sophia N Karagiannis
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom; Breast Cancer Now Research Unit, School of Cancer & Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, United Kingdom
| | - Katie E Lacy
- St. John's Institute of Dermatology, School of Basic & Medical Biosciences, King's College London, London, United Kingdom.
| |
Collapse
|
23
|
Schneider CA, Calvo E, Peterson KE. Arboviruses: How Saliva Impacts the Journey from Vector to Host. Int J Mol Sci 2021; 22:ijms22179173. [PMID: 34502092 PMCID: PMC8431069 DOI: 10.3390/ijms22179173] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/19/2021] [Accepted: 08/22/2021] [Indexed: 12/21/2022] Open
Abstract
Arthropod-borne viruses, referred to collectively as arboviruses, infect millions of people worldwide each year and have the potential to cause severe disease. They are predominately transmitted to humans through blood-feeding behavior of three main groups of biting arthropods: ticks, mosquitoes, and sandflies. The pathogens harbored by these blood-feeding arthropods (BFA) are transferred to animal hosts through deposition of virus-rich saliva into the skin. Sometimes these infections become systemic and can lead to neuro-invasion and life-threatening viral encephalitis. Factors intrinsic to the arboviral vectors can greatly influence the pathogenicity and virulence of infections, with mounting evidence that BFA saliva and salivary proteins can shift the trajectory of viral infection in the host. This review provides an overview of arbovirus infection and ways in which vectors influence viral pathogenesis. In particular, we focus on how saliva and salivary gland extracts from the three dominant arbovirus vectors impact the trajectory of the cellular immune response to arbovirus infection in the skin.
Collapse
Affiliation(s)
- Christine A. Schneider
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA;
| | - Eric Calvo
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, MD 20852, USA;
| | - Karin E. Peterson
- Laboratory of Persistent Viral Diseases, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA;
- Correspondence:
| |
Collapse
|
24
|
Moreau JM, Lowe MM. B Home or You Are In Trouble: B Cell Integrin-Mediated Recruitment Attenuates Skin Inflammation. J Invest Dermatol 2021; 141:1885-1887. [PMID: 34303469 DOI: 10.1016/j.jid.2021.02.751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 02/24/2021] [Accepted: 02/26/2021] [Indexed: 10/20/2022]
Abstract
B cells were long presumed to be a minor and functionally unimportant component of cutaneous immunobiology. However, it is now clear that these lymphocytes are present in healthy skin and accumulate during inflammatory disease. Aira and Debes (2021) identify ⍺4ꞵ1 integrin-mediated recruitment of IL-10+ B cells as a key pathway in attenuating skin inflammation. Their work provides valuable insight into the potential for B cells to regulate skin pathology.
Collapse
Affiliation(s)
- Joshua M Moreau
- Department of Dermatology, University of California, San Francisco, California, USA.
| | - Margaret M Lowe
- Department of Dermatology, University of California, San Francisco, California, USA
| |
Collapse
|
25
|
Rosser EC, Mauri C. The emerging field of regulatory B cell immunometabolism. Cell Metab 2021; 33:1088-1097. [PMID: 34077716 DOI: 10.1016/j.cmet.2021.05.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 03/31/2021] [Accepted: 05/05/2021] [Indexed: 01/02/2023]
Abstract
B cells are well known as critical mediators of humoral immune responses via the production of antibodies. However, numerous studies have also identified populations of B cells that are characterized by their anti-inflammatory properties. These "regulatory B cells" restrain excessive inflammatory responses in a wide range of health conditions. A significant knowledge gap remains concerning the nature of the signals that determine whether a B cell exerts a pro-inflammatory or anti-inflammatory function. In this perspective, we explore the concept that in addition to the cytokine microenvironment, intracellular and extracellular metabolic signals play a pivotal role in controlling the balance between regulatory and antibody-producing B cell subsets. Determining the metabolites and tissue-specific signals that influence B cell fate could establish novel therapeutic targets for the treatment of diseases where abnormal B cell responses contribute to pathogenesis.
Collapse
Affiliation(s)
- Elizabeth C Rosser
- Centre for Adolescent Rheumatology Versus Arthritis at University College London, University College London Hospital and Great Ormond Street Hospital, University College London, London, UK; Centre for Rheumatology Research, Division of Medicine, University College London, London, UK.
| | - Claudia Mauri
- Division of Infection, Immunity and Transplantation, University College London, London, UK
| |
Collapse
|
26
|
Lowy DB, Makker PGS, Moalem-Taylor G. Cutaneous Neuroimmune Interactions in Peripheral Neuropathic Pain States. Front Immunol 2021; 12:660203. [PMID: 33912189 PMCID: PMC8071857 DOI: 10.3389/fimmu.2021.660203] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/17/2021] [Indexed: 12/14/2022] Open
Abstract
Bidirectional interplay between the peripheral immune and nervous systems plays a crucial role in maintaining homeostasis and responding to noxious stimuli. This crosstalk is facilitated by a variety of cytokines, inflammatory mediators and neuropeptides. Dysregulation of this delicate physiological balance is implicated in the pathological mechanisms of various skin disorders and peripheral neuropathies. The skin is a highly complex biological structure within which peripheral sensory nerve terminals and immune cells colocalise. Herein, we provide an overview of the sensory innervation of the skin and immune cells resident to the skin. We discuss modulation of cutaneous immune response by sensory neurons and their mediators (e.g., nociceptor-derived neuropeptides), and sensory neuron regulation by cutaneous immune cells (e.g., nociceptor sensitization by immune-derived mediators). In particular, we discuss recent findings concerning neuroimmune communication in skin infections, psoriasis, allergic contact dermatitis and atopic dermatitis. We then summarize evidence of neuroimmune mechanisms in the skin in the context of peripheral neuropathic pain states, including chemotherapy-induced peripheral neuropathy, diabetic polyneuropathy, post-herpetic neuralgia, HIV-induced neuropathy, as well as entrapment and traumatic neuropathies. Finally, we highlight the future promise of emerging therapies associated with skin neuroimmune crosstalk in neuropathic pain.
Collapse
Affiliation(s)
- Daniel B Lowy
- School of Medical Sciences, The University of New South Wales, UNSW Sydney, Sydney, NSW, Australia
| | - Preet G S Makker
- School of Medical Sciences, The University of New South Wales, UNSW Sydney, Sydney, NSW, Australia
| | - Gila Moalem-Taylor
- School of Medical Sciences, The University of New South Wales, UNSW Sydney, Sydney, NSW, Australia
| |
Collapse
|
27
|
Lerman I, Mitchell DC, Richardson CT. Human cutaneous B cells: what do we really know? ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:440. [PMID: 33842661 PMCID: PMC8033329 DOI: 10.21037/atm-20-5185] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
B cells play many critical roles in the systemic immune response, including antibody secretion, antigen presentation, T cell co-stimulation, and pro- and anti-inflammatory cytokine production. However, the contribution of B cells to the local immune response in many non-lymphoid tissues, such as the skin, is incompletely understood. Cutaneous B cells are scarce except in certain malignant and inflammatory conditions, and as such, have been poorly characterized until recently. Emerging evidence now suggests an important role for cutaneous B in both skin homeostasis and pathogenesis of skin disease. Herein, we discuss the potential mechanisms for cutaneous B cell recruitment, localized antibody production, and T cell interaction in human skin infections and primary skin malignancies (i.e., melanoma, squamous cell carcinoma). We further consider the likely contribution of cutaneous B cells to the pathogenesis of inflammatory skin diseases, including pemphigus vulgaris, lupus erythematosus, systemic sclerosis, hidradenitis suppurativa, and atopic dermatitis. Finally, we examine the feasibility of B cell targeted therapy in the dermatologic setting, emphasizing areas that are still open to investigation. Through this review, we hope to highlight what we really know about cutaneous B cells in human skin, which can sometimes be lost in reviews that more broadly incorporate extensive data from animal models.
Collapse
Affiliation(s)
- Irina Lerman
- University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Drew C Mitchell
- University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
| | - Christopher T Richardson
- Department of Dermatology, University of Rochester Medical Center, Rochester, NY, USA.,Division of Allergy, Immunology and Rheumatology, University of Rochester Medical Center, Rochester, NY, USA
| |
Collapse
|
28
|
Aira LE, Debes GF. Skin-Homing Regulatory B Cells Required for Suppression of Cutaneous Inflammation. J Invest Dermatol 2021; 141:1995-2005.e6. [PMID: 33577766 DOI: 10.1016/j.jid.2021.01.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 12/23/2020] [Accepted: 01/27/2021] [Indexed: 02/06/2023]
Abstract
Pro and anti-inflammatory B-cell subsets that localize to unperturbed and inflamed skin are newly emerging components of the skin immune system. To test the relevance of regulatory B cells (Bregs) in the suppression of cutaneous inflammation, we asked whether impaired migration of these cells into the skin exacerbates skin inflammation. Using a mouse model with a B-cell‒specific tamoxifen-inducible deletion of α4β1 integrin, we demonstrate that selective disruption of α4β1-integrin expression in B cells significantly decreases IL-10+ Bregs in inflamed skin, whereas it does not affect their counterparts in lymphoid tissues. Impaired skin homing and reduced cutaneous accumulation of IL-10+ Bregs lead to a significant increase in clinical and histopathological parameters of inflammation in both psoriasiform skin inflammation and cutaneous delayed contact hypersensitivity. Thus, our data show a crucial function of skin-homing IL-10+ Bregs in the suppression of skin inflammation, supporting the notion that Bregs are critical players in the cutaneous environment during inflammatory skin diseases.
Collapse
Affiliation(s)
- Lazaro Emilio Aira
- Department of Microbiology & Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Gudrun Fiona Debes
- Department of Microbiology & Immunology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA; Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
| |
Collapse
|
29
|
Ma S, Satitsuksanoa P, Jansen K, Cevhertas L, van de Veen W, Akdis M. B regulatory cells in allergy. Immunol Rev 2020; 299:10-30. [PMID: 33345311 DOI: 10.1111/imr.12937] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 11/25/2020] [Accepted: 12/04/2020] [Indexed: 12/11/2022]
Abstract
B cells have classically been recognized for their unique and indispensable role in the production of antibodies. Their potential as immunoregulatory cells with anti-inflammatory functions has received increasing attention during the last two decades. Herein, we highlight pioneering studies in the field of regulatory B cell (Breg) research. We will review the literature on Bregs with a particular focus on their role in the regulation of allergic inflammation.
Collapse
Affiliation(s)
- Siyuan Ma
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland.,Department of Otolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Capital Medical University, Beijing, China
| | | | - Kirstin Jansen
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Lacin Cevhertas
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland.,Department of Medical Immunology, Institute of Health Sciences, Bursa Uludag University, Bursa, Turkey
| | - Willem van de Veen
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF), University of Zurich, Davos, Switzerland
| |
Collapse
|
30
|
Skin-Associated B Cells in the Pathogenesis of Cutaneous Autoimmune Diseases-Implications for Therapeutic Approaches. Cells 2020; 9:cells9122627. [PMID: 33297481 PMCID: PMC7762338 DOI: 10.3390/cells9122627] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/01/2020] [Accepted: 12/04/2020] [Indexed: 12/11/2022] Open
Abstract
B lymphocytes are crucial mediators of systemic immune responses and are known to be substantial in the pathogenesis of autoimmune diseases with cutaneous manifestations. Amongst them are lupus erythematosus, dermatomyositis, systemic sclerosis and psoriasis, and particularly those driven by autoantibodies such as pemphigus and pemphigoid. However, the concept of autoreactive skin-associated B cells, which may reside in the skin and locally contribute to chronic inflammation, is gradually evolving. These cells are believed to differ from B cells of primary and secondary lymphoid organs and may provide additional features besides autoantibody production, including cytokine expression and crosstalk to autoreactive T cells in an antigen-presenting manner. In chronically inflamed skin, B cells may appear in tertiary lymphoid structures. Those abnormal lymph node-like structures comprise a network of immune and stromal cells possibly enriched by vascular structures and thus constitute an ideal niche for local autoimmune responses. In this review, we describe current considerations of different B cell subsets and their assumed role in skin autoimmunity. Moreover, we discuss traditional and B cell-associated approaches for the treatment of autoimmune skin diseases, including drugs targeting B cells (e.g., CD19- and CD20-antibodies), plasma cells (e.g., proteasome inhibitors, CXCR4 antagonists), activated pathways (such as BTK- and PI3K-inhibitors) and associated activator molecules (BLyS, APRIL).
Collapse
|
31
|
Abstract
Inflammatory arthritis (IA) refers to a group of chronic diseases, including rheumatoid arthritis (RA), psoriatic arthritis (PsA), ankylosing spondylitis (AS), and other spondyloarthritis (SpA). IA is characterized by autoimmune-mediated joint inflammation and is associated with inflammatory cytokine networks. Innate lymphocytes, including innate-like lymphocytes (ILLs) expressing T or B cell receptors and innate lymphoid cells (ILCs), play important roles in the initiation of host immune responses against self-antigens and rapidly produce large amounts of cytokines upon stimulation. TNF (Tumor Necrosis Factor)-α, IFN (Interferon)-γ, Th2-related cytokines (IL-4, IL-9, IL-10, and IL-13), IL-17A, IL-22, and GM-CSF are involved in IA and are secreted by ILLs and ILCs. In this review, we focus on the current knowledge of ILL and ILC phenotypes, cytokine production and functions in IA. A better understanding of the roles of ILLs and ILCs in IA initiation and development will ultimately provide insights into developing effective strategies for the clinical treatment of IA patients.
Collapse
Affiliation(s)
- Xunyao Wu
- The Ministry of Education Key Laboratory, Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Clinical Immunology Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
32
|
Worrell JC, O'Reilly S. Bi-directional communication: Conversations between fibroblasts and immune cells in systemic sclerosis. J Autoimmun 2020; 113:102526. [PMID: 32713676 DOI: 10.1016/j.jaut.2020.102526] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 02/09/2023]
Abstract
Systemic Sclerosis (SSc) is an autoimmune idiopathic connective tissue disease, characterized by aberrant fibro-proliferative and inflammatory responses, causing fibrosis of multiple organs. In recent years the interactions between innate and adaptive immune cells with resident fibroblasts have been uncovered. Cross-talk between immune and stromal cells mediates activation of stromal cells to myofibroblasts; key cells in the pathophysiology of fibrosis. These cells and their cytokines appear to mediate their effects in both a paracrine and autocrine fashion. This review examines the role of innate and adaptive immune cells in SSc, focusing on recent advances that have illuminated our understanding of ongoing bi-directional communication between immune and stromal cells. Finally, we appraise current and future therapies and how these may be useful in a disease that currently has no specific disease modifying treatment.
Collapse
Affiliation(s)
- Julie C Worrell
- Insititute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK
| | - Steven O'Reilly
- Durham University, Biosciences, Faculty of Science, Durham, UK. steven.o'
| |
Collapse
|
33
|
Chandrasekhar JL, Cox KM, Erickson LD. B Cell Responses in the Development of Mammalian Meat Allergy. Front Immunol 2020; 11:1532. [PMID: 32765532 PMCID: PMC7379154 DOI: 10.3389/fimmu.2020.01532] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 06/10/2020] [Indexed: 12/11/2022] Open
Abstract
Studies of meat allergic patients have shown that eating meat poses a serious acute health risk that can induce severe cutaneous, gastrointestinal, and respiratory reactions. Allergic reactions in affected individuals following meat consumption are mediated predominantly by IgE antibodies specific for galactose-α-1,3-galactose (α-gal), a blood group antigen of non-primate mammals and therefore present in dietary meat. α-gal is also found within certain tick species and tick bites are strongly linked to meat allergy. Thus, it is thought that exposure to tick bites promotes cutaneous sensitization to tick antigens such as α-gal, leading to the development of IgE-mediated meat allergy. The underlying immune mechanisms by which skin exposure to ticks leads to the production of α-gal-specific IgE are poorly understood and are key to identifying novel treatments for this disease. In this review, we summarize the evidence of cutaneous exposure to tick bites and the development of mammalian meat allergy. We then provide recent insights into the role of B cells in IgE production in human patients with mammalian meat allergy and in a novel mouse model of meat allergy. Finally, we discuss existing data more generally focused on tick-mediated immunomodulation, and highlight possible mechanisms for how cutaneous exposure to tick bites might affect B cell responses in the skin and gut that contribute to loss of oral tolerance.
Collapse
Affiliation(s)
- Jessica L Chandrasekhar
- Beirne B. Carter Center for Immunology Research, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Kelly M Cox
- Department of Microbiology, Immunology, and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, United States
| | - Loren D Erickson
- Beirne B. Carter Center for Immunology Research, University of Virginia School of Medicine, Charlottesville, VA, United States.,Department of Microbiology, Immunology, and Cancer Biology, University of Virginia School of Medicine, Charlottesville, VA, United States
| |
Collapse
|
34
|
Abstract
In mammals, adaptive immunity is mediated by a broadly diverse repertoire of naive B and T lymphocytes that recirculate between secondary lymphoid organs. Initial antigen exposure promotes lymphocyte clonal expansion and differentiation, including the formation of memory cells. Antigen-specific memory cells are maintained at higher frequencies than their naive counterparts and have different functional and homing abilities. Importantly, a subset of memory cells, known as tissue-resident memory cells, is maintained without recirculating in nonlymphoid tissues, often at barrier surfaces, where they can be reactivated by antigen and rapidly perform effector functions that help protect the tissue in which they reside. Although antigen-experienced B cells are abundant at many barrier surfaces, their characterization as tissue-resident memory B (BRM) cells is not well developed. In this study, we describe the characteristics of memory B cells in various locations and discuss their possible contributions to immunity and homeostasis as bona fide BRM cells.
Collapse
Affiliation(s)
- S. Rameeza Allie
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Troy D. Randall
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| |
Collapse
|
35
|
Stotesbury C, Alves-Peixoto P, Montoya B, Ferez M, Nair S, Snyder CM, Zhang S, Knudson CJ, Sigal LJ. α2β1 Integrin Is Required for Optimal NK Cell Proliferation during Viral Infection but Not for Acquisition of Effector Functions or NK Cell-Mediated Virus Control. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2020; 204:1582-1591. [PMID: 32015010 PMCID: PMC7065959 DOI: 10.4049/jimmunol.1900927] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 01/05/2020] [Indexed: 01/13/2023]
Abstract
NK cells play an important role in antiviral resistance. The integrin α2, which dimerizes with integrin β1, distinguishes NK cells from innate lymphoid cells 1 and other leukocytes. Despite its use as an NK cell marker, little is known about the role of α2β1 in NK cell biology. In this study, we show that in mice α2β1 deficiency does not alter the balance of NK cell/ innate lymphoid cell 1 generation and slightly decreases the number of NK cells in the bone marrow and spleen without affecting NK cell maturation. NK cells deficient in α2β1 had no impairment at entering or distributing within the draining lymph node of ectromelia virus (ECTV)-infected mice or at becoming effectors but proliferated poorly in response to ECTV and did not increase in numbers following infection with mouse CMV (MCMV). Still, α2β1-deficient NK cells efficiently protected from lethal mousepox and controlled MCMV titers in the spleen. Thus, α2β1 is required for optimal NK cell proliferation but is dispensable for protection against ECTV and MCMV, two well-established models of viral infection in which NK cells are known to be important.
Collapse
Affiliation(s)
- Colby Stotesbury
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| | - Pedro Alves-Peixoto
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| | - Brian Montoya
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| | - Maria Ferez
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| | - Savita Nair
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| | - Christopher M Snyder
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| | - Shunchuan Zhang
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| | - Cory J Knudson
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| | - Luis J Sigal
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA 19107
| |
Collapse
|
36
|
Foulon M, Pouchin A, Manry J, Khater F, Robbe-Saule M, Durand A, Esnault L, Delneste Y, Jeannin P, Saint-André JP, Croué A, Altare F, Abel L, Alcaïs A, Marion E. Skin-specific antibodies neutralizing mycolactone toxin during the spontaneous healing of Mycobacterium ulcerans infection. SCIENCE ADVANCES 2020; 6:eaax7781. [PMID: 32133396 PMCID: PMC7043917 DOI: 10.1126/sciadv.aax7781] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 11/25/2019] [Indexed: 06/10/2023]
Abstract
Buruli ulcer, a neglected tropical infectious disease, is caused by Mycobacterium ulcerans. Without treatment, its lesions can progress to chronic skin ulcers, but spontaneous healing is observed in 5% of cases, suggesting the possible establishment of a host strategy counteracting the effects of M. ulcerans. We reveal here a skin-specific local humoral signature of the spontaneous healing process, associated with a rise in antibody-producing cells and specific recognition of mycolactone by the mouse IgG2a immunoglobulin subclass. We demonstrate the production of skin-specific antibodies neutralizing the immunomodulatory activity of the mycolactone toxin, and confirm the role of human host machinery in triggering effective local immune responses by the detection of anti-mycolactone antibodies in patients with Buruli ulcer. Our findings pave the way for substantial advances in both the diagnosis and treatment of Buruli ulcer in accordance with the most recent challenges issued by the World Health Organization.
Collapse
Affiliation(s)
- Mélanie Foulon
- Equipe ATOMycA, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
| | - Amélie Pouchin
- Equipe ATOMycA, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
| | - Jérémy Manry
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR-1163, Paris, France
- Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France
| | - Fida Khater
- Equipe ATOMycA, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
| | - Marie Robbe-Saule
- Equipe ATOMycA, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
| | - Amandine Durand
- Equipe ATOMycA, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
| | - Lucille Esnault
- Equipe ATOMycA, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
| | - Yves Delneste
- Equipe 07, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
- CHU Angers, Département d'Immunologie et Allergologie, Angers, France
| | - Pascale Jeannin
- Equipe 07, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
- CHU Angers, Département d'Immunologie et Allergologie, Angers, France
| | | | - Anne Croué
- Pathology Department, University Hospital of Angers, 49933 Angers, France
| | - Frederic Altare
- Equipe 05, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université d’Angers, Université de Nantes, Nantes, France
| | - Laurent Abel
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR-1163, Paris, France
- Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France
| | - Alexandre Alcaïs
- Laboratory of Human Genetics of Infectious Diseases, Necker Branch, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR-1163, Paris, France
- Imagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France
| | - Estelle Marion
- Equipe ATOMycA, U1232 CRCINA, Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Nantes, Université d’Angers, Angers, France
| |
Collapse
|
37
|
Debes GF, McGettigan SE. Skin-Associated B Cells in Health and Inflammation. THE JOURNAL OF IMMUNOLOGY 2020; 202:1659-1666. [PMID: 30833422 DOI: 10.4049/jimmunol.1801211] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/29/2018] [Indexed: 12/13/2022]
Abstract
Traditionally, the skin was believed to be devoid of B cells, and studies of the skin immune system have largely focused on other types of leukocytes. Exciting recent data show that B cells localize to the healthy skin of humans and other mammalian species with likely homeostatic functions in host defense, regulation of microbial communities, and wound healing. Distinct skin-associated B cell subsets drive or suppress cutaneous inflammatory responses with important clinical implications. Localized functions of skin-associated B cell subsets during inflammation comprise Ab production, interactions with skin T cells, tertiary lymphoid tissue formation, and production of proinflammatory cytokines but also include immunosuppression by providing IL-10. In this review, we delve into the intriguing new roles of skin-associated B cells in homeostasis and inflammation.
Collapse
Affiliation(s)
- Gudrun F Debes
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107
| | - Shannon E McGettigan
- Department of Microbiology and Immunology, Sidney Kimmel Medical College, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA 19107
| |
Collapse
|
38
|
Wilson RP, McGettigan SE, Dang VD, Kumar A, Cancro MP, Nikbakht N, Stohl W, Debes GF. IgM Plasma Cells Reside in Healthy Skin and Accumulate with Chronic Inflammation. J Invest Dermatol 2019; 139:2477-2487. [PMID: 31152755 PMCID: PMC6874734 DOI: 10.1016/j.jid.2019.05.009] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 05/03/2019] [Accepted: 05/13/2019] [Indexed: 12/15/2022]
Abstract
Antibodies are key to cutaneous host defense and inflammation. Despite their importance, the mechanisms by which skin antibodies are sustained are poorly described. Here, we identified that, in addition to antibody production in lymphoid tissues, plasma cells reside in healthy mouse and human skin. In naïve mice, IgM was the predominant isotype produced in skin. Skin plasma cells developed independently of T cells and microbiota. Importantly, chronic skin inflammation promoted the massive accumulation of IgM-secreting cells, and cutaneous immunization directed both T cell-dependent and -independent antigen-specific IgM-secreting cells into skin. Unlike their counterparts in lymphoid tissues, cutaneous IgM-secreting cells were completely dependent on survival factors such as a proliferation-inducing ligand or B cell-activating factor, which were constitutively expressed and upregulated during inflammation in skin. Our data support a model in which skin plasma cells supply natural and adaptive IgM to the cutaneous environment, thereby supporting homeostatic skin barrier functions and providing defense against pathogen intrusion. Our results are also of potential relevance for manipulation of cutaneous plasma cells in inflammatory skin diseases or cutaneous plasma cell malignancies.
Collapse
Affiliation(s)
- R Paul Wilson
- Department of Pathobiology, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Shannon E McGettigan
- Department of Microbiology and Immunology, Sidney Kimmel Medical College and Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Van Duc Dang
- Department of Microbiology and Immunology, Sidney Kimmel Medical College and Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA; Department of Cell Biology, Faculty of Biology, VNU University of Science, Hanoi, Vietnam; Vinmec Research Institute of Stem Cell and Gene Technology, Hanoi, Vietnam
| | - Anil Kumar
- Department of Microbiology and Immunology, Sidney Kimmel Medical College and Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Michael P Cancro
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Neda Nikbakht
- Department of Dermatology and Cutaneous Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - William Stohl
- Division of Rheumatology, University of Southern California Keck School of Medicine, Los Angeles, California, USA
| | - Gudrun F Debes
- Department of Microbiology and Immunology, Sidney Kimmel Medical College and Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
| |
Collapse
|
39
|
Kobayashi T, Oishi K, Okamura A, Maeda S, Komuro A, Hamaguchi Y, Fujimoto M, Takehara K, Matsushita T. Regulatory B1a Cells Suppress Melanoma Tumor Immunity via IL-10 Production and Inhibiting T Helper Type 1 Cytokine Production in Tumor-Infiltrating CD8+ T Cells. J Invest Dermatol 2019; 139:1535-1544.e1. [DOI: 10.1016/j.jid.2019.02.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/13/2019] [Accepted: 02/17/2019] [Indexed: 11/16/2022]
|
40
|
Wiest M, Upchurch K, Hasan MM, Cardenas J, Lanier B, Millard M, Turner J, Oh S, Joo H. Phenotypic and functional alterations of regulatory B cell subsets in adult allergic asthma patients. Clin Exp Allergy 2019; 49:1214-1224. [PMID: 31132180 DOI: 10.1111/cea.13439] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 04/25/2019] [Accepted: 05/20/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND IL-10-producing regulatory B cells (Bregs) are widely ascribed immune regulatory functions. However, Breg subsets in human asthma have not been fully investigated. OBJECTIVE We studied Breg subsets in adult allergic asthma patients by assessing two major parameters, frequency and IL-10 expression. We then investigated factors that affect these two parameters in patients. METHODS Peripheral blood mononuclear cells (PBMCs) of adult allergic asthma patients (N = 26) and non-asthmatic controls (N = 28) were used to assess the frequency of five subsets of transitional B cells (TBs), three subsets of CD24high CD27+ B cells and B1 cells. In addition to clinical data, IL-10 expression by individual Breg subsets was assessed by flow cytometry. RESULTS Asthma patients had decreases of CD5+ and CD1d+ CD5+ , but an increase of CD27+ TBs which was significant in patients with moderate asthma (60 < FEV1 < 80). Regardless of asthma severity, there was no significant alteration in the frequencies of 6 other Breg subsets tested. However, we found that oral corticosteroid (OCS) significantly affected the frequency of Bregs in Breg subset-specific manners. OCS decreased CD5+ and CD1d+ CD5+ TBs, but increased CD27+ TBs and CD10+ CD24high CD27+ cells. Furthermore, OCS decreased IL-10 expression by CD27+ TBs, all 3 CD24high CD27+ B cell subsets (CD5+ , CD10+ and CD1d+ ) and B1 cells. OCS-mediated inhibition of IL-10 expression was not observed in the other Breg subsets tested. CONCLUSION & CLINICAL RELEVANCE Alterations in the frequency of Bregs and their ability to express IL-10 are Breg subset-specific. OCS treatment significantly affects the frequency as well as their ability to express IL-10 in Breg subset-specific manners.
Collapse
Affiliation(s)
- Mathew Wiest
- Department of Immunology, Mayo Clinic, Scottsdale, Arizona.,Institute for Biomedical Studies, Baylor University, Waco, Texas
| | | | - Md Mahmudul Hasan
- Department of Immunology, Mayo Clinic, Scottsdale, Arizona.,Institute for Biomedical Studies, Baylor University, Waco, Texas
| | | | - Bobby Lanier
- North Texas Institute for Clinical Trials, Ft Worth, Texas
| | - Mark Millard
- Martha Foster Lung Care Center, Baylor University Medical Center, Dallas, Texas
| | - Jacob Turner
- Baylor Institute for Immunology Research, Dallas, Texas
| | - SangKon Oh
- Department of Immunology, Mayo Clinic, Scottsdale, Arizona.,Institute for Biomedical Studies, Baylor University, Waco, Texas
| | - HyeMee Joo
- Department of Immunology, Mayo Clinic, Scottsdale, Arizona.,Institute for Biomedical Studies, Baylor University, Waco, Texas
| |
Collapse
|
41
|
The Dynamics of the Skin's Immune System. Int J Mol Sci 2019; 20:ijms20081811. [PMID: 31013709 PMCID: PMC6515324 DOI: 10.3390/ijms20081811] [Citation(s) in RCA: 310] [Impact Index Per Article: 62.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 12/12/2022] Open
Abstract
The skin is a complex organ that has devised numerous strategies, such as physical, chemical, and microbiological barriers, to protect the host from external insults. In addition, the skin contains an intricate network of immune cells resident to the tissue, crucial for host defense as well as tissue homeostasis. In the event of an insult, the skin-resident immune cells are crucial not only for prevention of infection but also for tissue reconstruction. Deregulation of immune responses often leads to impaired healing and poor tissue restoration and function. In this review, we will discuss the defensive components of the skin and focus on the function of skin-resident immune cells in homeostasis and their role in wound healing.
Collapse
|
42
|
Skin immune response of rainbow trout (Oncorhynchus mykiss) experimentally exposed to the disease Red Mark Syndrome. Vet Immunol Immunopathol 2019; 211:25-34. [PMID: 31084890 DOI: 10.1016/j.vetimm.2019.03.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/15/2019] [Accepted: 03/22/2019] [Indexed: 11/21/2022]
Abstract
Red Mark Syndrome (RMS) is a skin disease reported from farmed rainbow trout. Since the turn of the millennium it has been spreading through Europe. RMS is probably a bacterial disease caused by a Midichloria-like organism (MLO). It is non-lethal and causes little obvious changes in appetite or behavior but results in red hyperaemic skin lesions, which may lead to economic losses due to downgrading. Here we transfer RMS to naïve specific pathogen free (SPF) fish by cohabitation with RMS-affected seeder fish. During disease development we characterize local cellular immune responses and regulations of immunologically relevant genes in skin of the cohabitants by immunohistochemistry and qPCR. Skin samples from SPF controls and cohabitants (areas with and without lesions) were taken at 18, 61, 82 and 97 days post-cohabitation. Gene expression results showed that lesions had a Th1-type profile, but with concurrent high expression levels of all three classes of immunoglobulins (IgD, IgM and IgT). The marked local infiltration of IgD + cells in the skin lesions as well as a highly up-regulated expression of the genes encoding sIgD and mIgD indicate that this immunoglobulin class plays an important role in skin immunity in general and in RMS pathology in particular. The co-occurrence of an apparent B cell dominated immune reaction with a Th1-type profile suggests that the local production of antibodies is independent of the classical Th2 pathway.
Collapse
|
43
|
Enyindah-Asonye G, Nwankwo A, Hogge C, Rahman MA, Helmold Hait S, Hunegnaw R, Ko EJ, Hoang T, Venzon DJ, Robert-Guroff M. A Pathogenic Role for Splenic B1 Cells in SIV Disease Progression in Rhesus Macaques. Front Immunol 2019; 10:511. [PMID: 30941141 PMCID: PMC6433970 DOI: 10.3389/fimmu.2019.00511] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 02/26/2019] [Indexed: 12/20/2022] Open
Abstract
B1 cells spontaneously produce protective natural antibodies which provide the first line of defense against a variety of pathogens. Although these natural antibodies share similar autoreactive features with several HIV-1 broadly neutralizing antibodies, the role of B1 cells in HIV/SIV disease progression is unknown. We report the presence of human-like B1 cells in rhesus macaques. During chronic SIV infection, we found that the frequency of splenic CD11b+ B1 cells positively correlated with plasma SIV viral load and exhausted T cells. Mechanistically, we discovered that splenic CD11b+ B1 cells express PD-L2 and IL-10, and were able to induce PD-1 upregulation on CD4+ T cells in vitro. These findings suggest that splenic CD11b+ B1 cells may contribute to the regulation of SIV plasma viral load by enhancing T cell exhaustion. Therefore, understanding the mechanisms that govern their function in rhesus macaques may lead to novel therapeutic strategies for impeding HIV/SIV disease progression.
Collapse
Affiliation(s)
- Gospel Enyindah-Asonye
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Anthony Nwankwo
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Christopher Hogge
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Mohammad Arif Rahman
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Sabrina Helmold Hait
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Ruth Hunegnaw
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Eun-Ju Ko
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Tanya Hoang
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - David J Venzon
- Biostatistics and Data Management Section, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| | - Marjorie Robert-Guroff
- Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States
| |
Collapse
|
44
|
Barbosa FMC, Dupin TV, Toledo MDS, Reis NFDC, Ribeiro K, Cronemberger-Andrade A, Rugani JN, De Lorenzo BHP, Novaes E Brito RR, Soares RP, Torrecilhas AC, Xander P. Extracellular Vesicles Released by Leishmania ( Leishmania) amazonensis Promote Disease Progression and Induce the Production of Different Cytokines in Macrophages and B-1 Cells. Front Microbiol 2018; 9:3056. [PMID: 30627118 PMCID: PMC6309564 DOI: 10.3389/fmicb.2018.03056] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 11/27/2018] [Indexed: 12/20/2022] Open
Abstract
The extracellular vesicles (EVs) released by Leishmania can contribute to the establishment of infection and host immunomodulation. In this study, we characterized the shedding of EVs from Leishmania (Leishmania) amazonensis promastigotes. This species is the causative agent of cutaneous leishmaniasis, and its role during interactions with bone marrow-derived macrophages (BMDMs) and peritoneal B-1 cells was evaluated. Leishmania amazonensis promastigotes cultivated in vitro at different times and temperatures spontaneously released EVs. EVs were purified using size-exclusion chromatography (SEC) and quantitated by nanoparticle tracking analysis (NTA). NTA revealed that the average size of the EVs was approximately 180 nm, with concentrations ranging from 1.8 × 108 to 2.4 × 109 vesicles/mL. In addition, the presence of LPG and GP63 were detected in EVs obtained at different temperatures. Naïve BMDMs stimulated with EVs exhibited increased IL-10 and IL-6 expression. However, incubating B-1 cells with parasite EVs did not stimulate IL-10 expression but led to an increase in the expression of IL-6 and TNFα. After 7 weeks post-infection, animals infected with L. amazonensis promastigotes in the presence of parasite EVs had significant higher parasite load and a polarization to Th2 response, as compared to the group infected with the parasite alone. This work demonstrated that EVs isolated from L. amazonensis promastigotes were able to stimulate macrophages and B-1 cells to express different types of cytokines. Moreover, the immunomodulatory properties of EVs probably contributed to an increase in parasite burden in mice. These findings suggest that the functionality of L. amazonensis EVs on immune system favor of parasite survival and disease progression.
Collapse
Affiliation(s)
- Fernanda Marins Costa Barbosa
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo - Campus Diadema, Diadema, Brazil
| | - Talita Vieira Dupin
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo - Campus Diadema, Diadema, Brazil
| | - Mayte Dos Santos Toledo
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo - Campus Diadema, Diadema, Brazil
| | - Natasha Ferraz Dos Campos Reis
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo - Campus Diadema, Diadema, Brazil
| | - Kleber Ribeiro
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo - Campus Diadema, Diadema, Brazil
| | - André Cronemberger-Andrade
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo - Campus Diadema, Diadema, Brazil
| | | | | | | | | | - Ana Claudia Torrecilhas
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo - Campus Diadema, Diadema, Brazil
| | - Patricia Xander
- Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Universidade Federal de São Paulo - Campus Diadema, Diadema, Brazil
| |
Collapse
|
45
|
Li C, To KKW, Zhang AJX, Lee ACY, Zhu H, Mak WWN, Hung IFN, Yuen KY. Co-stimulation With TLR7 Agonist Imiquimod and Inactivated Influenza Virus Particles Promotes Mouse B Cell Activation, Differentiation, and Accelerated Antigen Specific Antibody Production. Front Immunol 2018; 9:2370. [PMID: 30369932 PMCID: PMC6194170 DOI: 10.3389/fimmu.2018.02370] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 09/24/2018] [Indexed: 12/20/2022] Open
Abstract
Current influenza vaccines have relatively low effectiveness, especially against antigenically drifted strains, the effectiveness is even lower in the elderly and immunosuppressed individuals. We have previously shown in a randomized clinical trial that the topical application of a toll-like receptor 7 agonist, imiquimod, just before intradermal influenza vaccine could expedite and augment antibody response, including to antigenically-drifted strains. However, the mechanism of this vaccine and imiquimod combination approach is poorly understood. Here, we demonstrated that imiquimod alone directly activated purified mouse peritoneal B cells. When combined with inactivated H1N1/415742Md influenza virus particle (VP) as vaccine, co-stimulation of mouse peritoneal B cells in vitro induced stronger activation, proliferation, and production of virus-antigen specific IgM and IgG. Intraperitoneal injection of a combination of VP and imiquimod (VCI) was associated with an increased number of activated B cells with enhanced expression of CD86 in the mesenteric draining lymph nodes (mesLN) and the spleen at 18 h after injection. Three days after immunization with VCI, mouse spleen showed significantly more IgM and IgG secreting cells upon in vitro re-stimulation with inactivated virus, mouse sera were detected with viral neutralizing antibody. Transfer of these spleen B cells to naïve mice improved survival after lethal dose of H1N1/415742Md challenge. More importantly, the functional response of VCI-induced B cell activation was demonstrated by early challenge with a lethal dose of H1N1/415742Md influenza virus at 3 days after immunization. The spleen and mediastinal lymph nodes (mdLN) in mice immunized with VCI had germinal center formation, and significantly higher number of plasmablasts, plasma cells, and virus-antigen specific IgM and IgG secreting cells at only 3–4 days post virus challenge, compared with those of mice that have received imiquimod, inactivated virus alone or PBS. Serum virus-specific IgG2a, IgG2b, and IgG1 and bronchoalveolar lavage fluid (BALF) virus-specific IgA at 3 or 4 days post challenge were significantly higher in mice immunized with VCI, which had significantly reduced lung viral load and 100% survival. These findings suggested that imiquimod accelerates the vaccine-induced antibody production via inducing rapid differentiation of naïve B cells into antigen-specific antibody producing cells.
Collapse
Affiliation(s)
- Can Li
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong.,State Key Laboratory for Emerging Infectious Diseases, University of Hong Kong, Pokfulam, Hong Kong.,Carol Yu Centre for Infection, University of Hong Kong, Pokfulam, Hong Kong.,Research Centre of Infection and Immunology, University of Hong Kong, Pokfulam, Hong Kong
| | - Kelvin K W To
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong.,State Key Laboratory for Emerging Infectious Diseases, University of Hong Kong, Pokfulam, Hong Kong.,Carol Yu Centre for Infection, University of Hong Kong, Pokfulam, Hong Kong.,Research Centre of Infection and Immunology, University of Hong Kong, Pokfulam, Hong Kong
| | - Anna J X Zhang
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong.,State Key Laboratory for Emerging Infectious Diseases, University of Hong Kong, Pokfulam, Hong Kong.,Carol Yu Centre for Infection, University of Hong Kong, Pokfulam, Hong Kong.,Research Centre of Infection and Immunology, University of Hong Kong, Pokfulam, Hong Kong
| | - Andrew C Y Lee
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong.,State Key Laboratory for Emerging Infectious Diseases, University of Hong Kong, Pokfulam, Hong Kong.,Carol Yu Centre for Infection, University of Hong Kong, Pokfulam, Hong Kong.,Research Centre of Infection and Immunology, University of Hong Kong, Pokfulam, Hong Kong
| | - Houshun Zhu
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong
| | - Winger W N Mak
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong.,State Key Laboratory for Emerging Infectious Diseases, University of Hong Kong, Pokfulam, Hong Kong.,Carol Yu Centre for Infection, University of Hong Kong, Pokfulam, Hong Kong.,Research Centre of Infection and Immunology, University of Hong Kong, Pokfulam, Hong Kong
| | - Ivan F N Hung
- Department of Medicine, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong
| | - Kwok-Yung Yuen
- Department of Microbiology, Li Ka Shing Faculty of Medicine, University of Hong Kong, Pokfulam, Hong Kong.,State Key Laboratory for Emerging Infectious Diseases, University of Hong Kong, Pokfulam, Hong Kong.,Carol Yu Centre for Infection, University of Hong Kong, Pokfulam, Hong Kong.,Research Centre of Infection and Immunology, University of Hong Kong, Pokfulam, Hong Kong
| |
Collapse
|
46
|
Sarkar A, Shukla SK, Alqatawni A, Kumar A, Addya S, Tsygankov AY, Rafiq K. The Role of Allograft Inflammatory Factor-1 in the Effects of Experimental Diabetes on B Cell Functions in the Heart. Front Cardiovasc Med 2018; 5:126. [PMID: 30258845 PMCID: PMC6145033 DOI: 10.3389/fcvm.2018.00126] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 08/21/2018] [Indexed: 01/18/2023] Open
Abstract
Diabetes mellitus (DM) often causes chronic inflammation, hypertrophy, apoptosis and fibrosis in the heart and subsequently leads to myocardial remodeling, deteriorated cardiac function and heart failure. However, the etiology of the cardiac disease is unknown. Therefore, we assessed the gene expression in the left ventricle of diabetic and non-diabetic mice using Affymetrix microarray analysis. Allograft inflammatory factor-1 (AIF-1), one of the top downregulated B cell inflammatory genes, is associated with B cell functions in inflammatory responses. Real-time reverse transcriptase-polymerase chain reaction confirmed the Affymetrix data. The expression of CD19 and AIF-1 were downregulated in diabetic hearts as compared to control hearts. Using in vitro migration assay, we showed for the first time that AIF-1 is responsible for B cell migration as B cells migrated to GFP-AIF-1-transfected H9C2 cells compared to empty vector-transfected cells. Interestingly, overexpression of AIF-1 in diabetic mice prevented streptozotocin-induced cardiac dysfunction, inflammation and promoted B cell homing into the heart. Our results suggest that AIF-1 downregulation inhibited B cell homing into diabetic hearts, thus promoting inflammation that leads to the development of diabetic cardiomyopathy, and that overexpression of AIF-1 could be a novel treatment for this condition.
Collapse
Affiliation(s)
- Amrita Sarkar
- Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA, United States
| | - Sanket K Shukla
- Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA, United States
| | - Aseel Alqatawni
- Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA, United States
| | - Anil Kumar
- Department of Microbiology and Immunology, Thomas Jefferson University, Philadelphia, PA, United States
| | - Sankar Addya
- Kimmel Cancer Centre, Thomas Jefferson University, Philadelphia, PA, United States
| | - Alexander Y Tsygankov
- Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Khadija Rafiq
- Center for Translational Medicine, Thomas Jefferson University, Philadelphia, PA, United States
| |
Collapse
|
47
|
MANICKAM C, NWANZE C, RAM DR, SHAH SV, SMITH S, JONES R, HUEBER B, KROLL K, VARNER V, GOEPFERT P, JOST S, REEVES RK. Progressive lentivirus infection induces natural killer cell receptor-expressing B cells in the gastrointestinal tract. AIDS 2018; 32:1571-1578. [PMID: 29734222 PMCID: PMC6043388 DOI: 10.1097/qad.0000000000001855] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Recently, a seemingly novel innate immune cell subset bearing features of natural killer and B cells was identified in mice. So-called NKB cells appear as first responders to infections, but whether this cell population is truly novel or is in fact a subpopulation of B cells and exists in higher primates remains unclear. The objective of this study was to identify NKB cells in primates and study the impact of HIV/SIV infections. DESIGN AND METHODS NKB cells were quantified in both naive and lentivirus infected rhesus macaques and humans by excluding lineage markers (CD3, CD127) and positive Boolean gating for CD20, NKG2A/C and/or NKp46. Additional phenotypic measures were conducted by RNA-probe and traditional flow cytometry. RESULTS Circulating cytotoxic NKB cells were found at similar frequencies in humans and rhesus macaques (range, 0.01-0.2% of total lymphocytes). NKB cells were notably enriched in spleen (median, 0.4% of lymphocytes), but were otherwise systemically distributed in tonsil, lymph nodes, colon, and jejunum. Expression of immunoglobulin was highly variable, but heavily favoured IgM and IgA rather than IgG. Interestingly, NKB cell frequencies expanded in PBMC and colon during SIV infection, as did IgG expression, but were generally unaltered in HIV-infected humans. CONCLUSION These results suggest a cell type expressing both natural killer and B-cell features exists in rhesus macaques and humans and are perturbed by HIV/SIV infection. The full functional niche remains unknown, but the unique phenotype and systemic distribution could make NKB cells unique targets for immunotherapeutics or vaccine strategies.
Collapse
Affiliation(s)
- Cordelia MANICKAM
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Chiadika NWANZE
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Daniel R. RAM
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Spandan V. SHAH
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Scott SMITH
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Rhianna JONES
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Brady HUEBER
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Kyle KROLL
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Valerie VARNER
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Paul GOEPFERT
- Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Stephanie JOST
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - R. Keith REEVES
- Center for Virology and Vaccine Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- Ragon Institute of Massachusetts General Hospital, MIT, and Harvard, Cambridge, MA
| |
Collapse
|
48
|
Skin Immune Landscape: Inside and Outside the Organism. Mediators Inflamm 2017; 2017:5095293. [PMID: 29180836 PMCID: PMC5664322 DOI: 10.1155/2017/5095293] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 08/04/2017] [Accepted: 08/10/2017] [Indexed: 12/22/2022] Open
Abstract
The skin is an essential organ to the human body protecting it from external aggressions and pathogens. Over the years, the skin was proven to have a crucial immunological role, not only being a passive protective barrier but a network of effector cells and molecular mediators that constitute a highly sophisticated compound known as the “skin immune system” (SIS). Studies of skin immune sentinels provided essential insights of a complex and dynamic immunity, which was achieved through interaction between the external and internal cutaneous compartments. In fact, the skin surface is cohabited by microorganisms recognized as skin microbiota that live in complete harmony with the immune sentinels and contribute to the epithelial barrier reinforcement. However, under stress, the symbiotic relationship changes into a dysbiotic one resulting in skin disorders. Hence, the skin microbiota may have either positive or negative influence on the immune system. This review aims at providing basic background information on the cutaneous immune system from major cellular and molecular players and the impact of its microbiota on the well-coordinated immune responses in host defense.
Collapse
|
49
|
Leech JM, Lacey KA, Mulcahy ME, Medina E, McLoughlin RM. IL-10 Plays Opposing Roles during Staphylococcus aureus Systemic and Localized Infections. THE JOURNAL OF IMMUNOLOGY 2017; 198:2352-2365. [PMID: 28167629 DOI: 10.4049/jimmunol.1601018] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 01/12/2017] [Indexed: 01/08/2023]
Abstract
IL-10 is a potent anti-inflammatory mediator that plays a crucial role in limiting host immunopathology during bacterial infections by controlling effector T cell activation. Staphylococcus aureus has previously been shown to manipulate the IL-10 response as a mechanism of immune evasion during chronic systemic and biofilm models of infection. In the present study, we demonstrate divergent roles for IL-10 depending on the site of infection. During acute systemic S. aureus infection, IL-10 plays an important protective role and is required to prevent bacterial dissemination and host morbidity by controlling effector T cells and the associated downstream hyperactivation of inflammatory phagocytes, which are capable of host tissue damage. CD19+CD11b+CD5+ B1a regulatory cells were shown to rapidly express IL-10 in a TLR2-dependent manner in response to S. aureus, and adoptive transfer of B1a cells was protective during acute systemic infection in IL-10-deficient hosts. In contrast, during localized s.c. infection, IL-10 production plays a detrimental role by facilitating bacterial persistence via the same mechanism of controlling proinflammatory T cell responses. Our findings demonstrate that induction of IL-10 has a major influence on disease outcome during acute S. aureus infection. Too much IL-10 at one end of the scale may suppress otherwise protective T cell responses, thus facilitating persistence of the bacteria, and at the other end, too little IL-10 may tend toward fatal host-mediated pathology through excessive activation of T cells and associated phagocyte-mediated damage.
Collapse
Affiliation(s)
- John M Leech
- Host-Pathogen Interactions Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland; and
| | - Keenan A Lacey
- Host-Pathogen Interactions Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland; and
| | - Michelle E Mulcahy
- Host-Pathogen Interactions Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland; and
| | - Eva Medina
- Infection Immunology Research Group, Helmholtz Center for Infection Research, 38124 Braunschweig, Germany
| | - Rachel M McLoughlin
- Host-Pathogen Interactions Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland; and
| |
Collapse
|