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Kolachala VL, Wei C, Venkateswaran S, Hill AL, Warren V, Espinoza H, Sanz I, Gupta NA. Increased IgD and CD27 Double Negative (DN) B cell population in pediatric onset autoimmune hepatitis. Autoimmunity 2024; 57:2356089. [PMID: 38770919 DOI: 10.1080/08916934.2024.2356089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 05/12/2024] [Indexed: 05/22/2024]
Abstract
Autoimmune hepatitis (AIH) is a chronic, inflammatory liver disease of unknown aetiology which requires lifelong immunosuppression. Most therapeutic and outcome studies of AIH have been conducted predominantly in Caucasian (European Ancestry, EA) cohorts, with the exclusion of African American (AA) patients due to inadequate sample size. It is known that AA patients have a severe phenotype of autoimmune diseases and demonstrate a poor response to conventional medical therapy. Understanding cellular and molecular pathways which determine AIH severity and progression in AA patients is likely to lead to the discovery of novel, personalised and better tolerated therapies. The aim of the study is to determine the distinct effector B cell phenotypes which contribute to disease severity and progression of AIH in AA children as compared to their EA cohorts. PBMCs were isolated from blood samples collected from patients visiting Children's Healthcare of Atlanta (CHOA) and were grouped into AA, (n = 12), EA, (n = 11) and controls (n = 12) and were processed for flow cytometry. Markers of B cell development, maturation and activation were assessed namely CD19, CD21, IgD, CD27, CD38, CD11c, CD24, CD138. AA children with AIH demonstrated an expansion of CD19 + ve, Activated Naïve (aN), (CD19+ IgD-/CD27- Double Negative (DN2) ([CD19+/IgD-/CD27++CD38++) cells. Plasmablasts were significantly higher along with Signalling Lymphocytic activation molecule F7 (SLAMF7). Unswitched memory [CD19+] IgD+CD27+ (USM) B cells were significantly contracted in AA patients with AIH. B cell phenotyping reveals a distinct profile in AA AIH patients with a major skewing towards the expansion of effector pathways which have been previously characterised in severe SLE in AA patients. These results suggest that the quantification and therapeutic target of B cell pathway could contribute substantially to the clinical approach to AIH especially in the AA population.
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Affiliation(s)
| | - Chungwen Wei
- Division of Rheumatology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
- Department of Medicine, Lowance Center for Human Immunology, Atlanta, GA, USA
- Department of Medicine, Emory Autoimmunity Center of Excellence, Atlanta, GA, USA
| | | | - Aisha Latrece Hill
- Division of Rheumatology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
- Department of Medicine, Lowance Center for Human Immunology, Atlanta, GA, USA
- Department of Medicine, Emory Autoimmunity Center of Excellence, Atlanta, GA, USA
| | - Vivian Warren
- Division of Rheumatology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
- Department of Medicine, Lowance Center for Human Immunology, Atlanta, GA, USA
- Department of Medicine, Emory Autoimmunity Center of Excellence, Atlanta, GA, USA
| | - Hillary Espinoza
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
- Pediatric Transplant, Children's Healthcare of Atlanta, Transplant Services, Atlanta, GA, USA
| | - Iñaki Sanz
- Division of Rheumatology, Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
- Department of Medicine, Lowance Center for Human Immunology, Atlanta, GA, USA
- Department of Medicine, Emory Autoimmunity Center of Excellence, Atlanta, GA, USA
| | - Nitika A Gupta
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA, USA
- Pediatric Transplant, Children's Healthcare of Atlanta, Transplant Services, Atlanta, GA, USA
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Huang Y, Tian Z, Bi J. Intracellular checkpoints for NK cell cancer immunotherapy. Front Med 2024:10.1007/s11684-024-1090-6. [PMID: 39340588 DOI: 10.1007/s11684-024-1090-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 05/17/2024] [Indexed: 09/30/2024]
Abstract
Natural killer (NK) cells are key innate immune lymphocytes, which play important roles against tumors. However, tumor-infiltrating NK cells are always hypofunctional/exhaustive. On the one hand, this state is contributed by context-dependent interactions between inhibitory NK cell checkpoint receptors and their ligands, which usually vary in different tumor types and stages during tumor development. On the other hand, the inhibitory functions of intracellular checkpoint molecules of NK cells are more similar across different tumor types, representing common mechanisms limiting the potential of NK cell therapy. In this review, representative NK cell intracellular checkpoint molecules in different aspects of NK cell biology were reviewed, and therapeutic potentials were discussed by targeting these molecules to promote antitumor NK cell therapy.
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Affiliation(s)
- Yingying Huang
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, China
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, 530021, China
- Guangxi Collaborative Innovation Center for Genomic and Personalized Medicine, Nanning, 530021, China
- Guangxi Key Laboratory for Genomic and Personalized Medicine, Guangxi Key Laboratory of Colleges and Universities, Nanning, 530021, China
- Collaborative Innovation Center of Regenerative Medicine and Medical BioResource Development and Application, Guangxi Medical University, Nanning, 530021, China
| | - Zhigang Tian
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- The CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Basic Medical Sciences, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230027, China
- Institute of Immunology, University of Science and Technology of China, Hefei, 230027, China
- Research Unit of NK Cell Study, Chinese Academy of Medical Sciences, Beijing, 100864, China
| | - Jiacheng Bi
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
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Arlt E, Kindermann A, Fritsche AK, Navarrete Santos A, Kielstein H, Bazwinsky-Wutschke I. A Flow Cytometry-Based Examination of the Mouse White Blood Cell Differential in the Context of Age and Sex. Cells 2024; 13:1583. [PMID: 39329764 PMCID: PMC11430320 DOI: 10.3390/cells13181583] [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: 07/31/2024] [Revised: 09/10/2024] [Accepted: 09/13/2024] [Indexed: 09/28/2024] Open
Abstract
Analysis of the white blood cell differential as part of a flow cytometry-based approach is a common routine diagnostic tool used in clinics and research. For human blood, the methodological approach, suitable markers, and gating strategies are well-established. However, there is a lack of information regarding the mouse blood count. In this article, we deliver a fast and easy protocol for reprocessing mouse blood for the purpose of flow cytometric analysis, as well as suitable markers and gating strategies. We also present two possible applications: for the analysis of the whole blood count, with blood from a cardiac puncture, and for the analysis of a certain leukocyte subset at multiple time points in the framework of a mouse experiment, using blood from the facial vein. Additionally, we provide orientation values by applying the method to 3-month-old and 24-month-old male and female C57BL/6J mice. Our analyses demonstrate differences in the leukocyte fractions depending on age and sex. We discuss the influencing factors and limitations that can affect the results and that, therefore, need to be considered when applying this method. The present study fills the gap in the knowledge related to the rare information on flow cytometric analysis of mouse blood and, thus, lays the foundation for further investigations in this area.
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Affiliation(s)
- Elise Arlt
- Institute of Anatomy and Cell Biology, Medical Faculty, Martin-Luther-University Halle-Wittenberg, 06108 Halle (Saale), Germany; (A.K.); (A.-K.F.); (H.K.); (I.B.-W.)
| | - Andrea Kindermann
- Institute of Anatomy and Cell Biology, Medical Faculty, Martin-Luther-University Halle-Wittenberg, 06108 Halle (Saale), Germany; (A.K.); (A.-K.F.); (H.K.); (I.B.-W.)
| | - Anne-Kristin Fritsche
- Institute of Anatomy and Cell Biology, Medical Faculty, Martin-Luther-University Halle-Wittenberg, 06108 Halle (Saale), Germany; (A.K.); (A.-K.F.); (H.K.); (I.B.-W.)
- Institute of Anatomy, Medical Faculty, University of Leipzig, 04103 Leipzig, Germany
| | - Alexander Navarrete Santos
- Core Facility Flow Cytometry, Center for Basic Medical Research, Medical Faculty, Martin-Luther-University Halle-Wittenberg, 06108 Halle (Saale), Germany;
| | - Heike Kielstein
- Institute of Anatomy and Cell Biology, Medical Faculty, Martin-Luther-University Halle-Wittenberg, 06108 Halle (Saale), Germany; (A.K.); (A.-K.F.); (H.K.); (I.B.-W.)
| | - Ivonne Bazwinsky-Wutschke
- Institute of Anatomy and Cell Biology, Medical Faculty, Martin-Luther-University Halle-Wittenberg, 06108 Halle (Saale), Germany; (A.K.); (A.-K.F.); (H.K.); (I.B.-W.)
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Phillips EA, Alharithi YJ, Kadam L, Coussens LM, Kumar S, Maloyan A. Metabolic abnormalities in the bone marrow cells of young offspring born to mothers with obesity. Int J Obes (Lond) 2024:10.1038/s41366-024-01563-x. [PMID: 38937647 DOI: 10.1038/s41366-024-01563-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 05/31/2024] [Accepted: 06/05/2024] [Indexed: 06/29/2024]
Abstract
BACKGROUND/OBJECTIVES Intrauterine metabolic reprogramming occurs in mothers with obesity during gestation, putting the offspring at high risk of developing obesity and associated metabolic disorders even before birth. We have generated a mouse model of maternal high-fat diet-induced obesity that recapitulates the metabolic changes seen in humans born to women with obesity. METHODS Here, we profiled and compared the metabolic characteristics of bone marrow cells of newly weaned 3-week-old offspring of dams fed either a high-fat (Off-HFD) or a regular diet (Off-RD). We utilized a state-of-the-art flow cytometry, and targeted metabolomics approach coupled with a Seahorse metabolic analyzer. RESULTS We revealed significant metabolic perturbation in the offspring of HFD-fed vs. RD-fed dams, including utilization of glucose primarily via oxidative phosphorylation. We also show a reduction in levels of amino acids, a phenomenon previously linked to bone marrow aging. Using flow cytometry, we found changes in the immune complexity of bone marrow cells and identified a unique B cell population expressing CD19 and CD11b in the bone marrow of three-week-old offspring of high-fat diet-fed mothers. Our data also revealed increased expression of Cyclooxygenase-2 (COX-2) on myeloid CD11b, and on CD11bhi B cells. CONCLUSIONS Altogether, we demonstrate that the offspring of mothers with obesity show metabolic and immune changes in the bone marrow at a very young age and prior to any symptomatic metabolic disease.
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Affiliation(s)
- Elysse A Phillips
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR, 97239, USA
- The University of California San Francisco, San Francisco, CA, USA
| | - Yem J Alharithi
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Leena Kadam
- Department of OB/GYN, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Lisa M Coussens
- Department of Cell, Development and Cancer Biology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, 97239, USA
| | - Sushil Kumar
- Department of Cell, Development and Cancer Biology, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, 97239, USA.
| | - Alina Maloyan
- Knight Cardiovascular Institute, Oregon Health & Science University, Portland, OR, 97239, USA.
- The University of California San Francisco, San Francisco, CA, USA.
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Grenda A, Kuźnar-Kamińska B, Kalinka E, Krawczyk P, Sawicki M, Filip A, Chmielewska I, Frąk M, Krzyżanowska N, Milanowski J. MicroRNA-126 selected with broad-spectrum analysis of microRNAs - a new predictive factor for the effectiveness of immunotherapy or chemoimmunotherapy in advanced NSCLC patients? Front Immunol 2024; 15:1344858. [PMID: 38469304 PMCID: PMC10925701 DOI: 10.3389/fimmu.2024.1344858] [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: 11/26/2023] [Accepted: 02/07/2024] [Indexed: 03/13/2024] Open
Abstract
Introduction Expression of PD-L1 on cancer cells is the only validated predictive factor for immunotherapy in NSCLC (Non-Small Cell Lung Cancer) patients. However, on this basis, it is difficult to predict the occurrence of resistance to immune checkpoint inhibitors (ICIs). MicroRNAs are widely studied as biomarkers of cancers. Our study was designed to determine whether microRNAs can be sensitive predictive factors in the qualification of NSCLC patients to first-line immunotherapy or chemoimmunotherapy. Material and methods The two-stage research on validation group (n=20) and study group (n=35) of patients with advanced NSCLC was conducted. Analysis of microRNAs expression by qPCR in plasma collected prior to the start of immunotherapy (pembrolizumab) or chemoimmunotherapy (combination of pembrolizumab with chemotherapy) was made. Broad-spectrum analysis of microRNAs expression was used in the studied group. Three microRNAs selected in that group as important for the effectiveness of ICIs were then examined in the validation group. Results In the studied group, significantly higher expression of miRNA-126-3p, miR-144-3p and miR-146-5p was observed in patients with long PFS compared to those with short PFS. In the validation group, low miRNA-126 expression indicated lower median progression-free survival and overall survival (2.3 vs. 5.0 months and 5.2 vs 11.2, respectively). These patients had a significantly higher risk of progression (HR= 2.92, 95% CI: 1.01 to 8.40, p=0.04) and death (HR=3.64, 95% CI: 1.22 to 10.84, p=0.02). Conclusion Our study showed that the expression of miR-126 in blood plasma may be a predictive factor for the effectiveness of first-line immunotherapy or chemoimmunotherapy in advanced NSCLC patients.
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Affiliation(s)
- Anna Grenda
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
| | - Barbara Kuźnar-Kamińska
- Department of Pulmonology, Allergology and Pulmonary Oncology, Poznan University of Medical Sciences, Poznań, Poland
| | - Ewa Kalinka
- Department of Oncology, Polish Mother’s Memorial Hospital Research Institute, Łódź, Poland
| | - Paweł Krawczyk
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
| | - Marek Sawicki
- Department of Thoracic Surgery, Medical University of Lublin, Lublin, Poland
| | - Agata Filip
- Department of Cancer Genetics with Department of Cancer Genetics with Cytogenetics Laboratory, Medical University in Lublin, Lublin, Poland
| | - Izabela Chmielewska
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
| | - Małgorzata Frąk
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
| | - Natalia Krzyżanowska
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
| | - Janusz Milanowski
- Department of Pneumonology, Oncology and Allergology, Medical University of Lublin, Lublin, Poland
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Yu Y, Lu C, Yu W, Lei Y, Sun S, Liu P, Bai F, Chen Y, Chen J. B Cells Dynamic in Aging and the Implications of Nutritional Regulation. Nutrients 2024; 16:487. [PMID: 38398810 PMCID: PMC10893126 DOI: 10.3390/nu16040487] [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: 01/07/2024] [Revised: 02/01/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Aging negatively affects B cell production, resulting in a decrease in B-1 and B-2 cells and impaired antibody responses. Age-related B cell subsets contribute to inflammation. Investigating age-related alterations in the B-cell pool and developing targeted therapies are crucial for combating autoimmune diseases in the elderly. Additionally, optimal nutrition, including carbohydrates, amino acids, vitamins, and especially lipids, play a vital role in supporting immune function and mitigating the age-related decline in B cell activity. Research on the influence of lipids on B cells shows promise for improving autoimmune diseases. Understanding the aging B-cell pool and considering nutritional interventions can inform strategies for promoting healthy aging and reducing the age-related disease burden.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Juan Chen
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100091, China; (Y.Y.)
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Yuming Z, Ruqi T, Gershwin ME, Xiong M. Autoimmune Hepatitis: Pathophysiology. Clin Liver Dis 2024; 28:15-35. [PMID: 37945156 DOI: 10.1016/j.cld.2023.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Genome-wide association analyses suggest that HLA genes including HLA-DRB*0301, HLA-DRB*0401, and HLA-B*3501 as well as non-HLA genes including CD28/CTLA4/ICOS and SYNPR increased AIH susceptibility. The destruction of hepatocytes is the result of the imbalance between proinflammatory cells and immunosuppressive cells, especially the imbalance between Tregs and Th17 cells. The microbiome in patients with AIH is decreased in diversity with a specific decline in Bifidobacterium and enrichment in Veillonella and Faecalibacterium. Recent evidence has demonstrated the pathogenic role of E. gallinarum and L.reuteri in inducing autoimmunity in the liver.
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Affiliation(s)
- Zhou Yuming
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, NHC Key Laboratory of Digestive Diseases, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai, China
| | - Tang Ruqi
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, NHC Key Laboratory of Digestive Diseases, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai, China
| | - Merrill Eric Gershwin
- Division of Rheumatology, Department of Medicine, Allergy and Clinical Immunology, University of California at Davis, 451 Health Sciences Drive, Suite 6510, Davis, CA 95616, USA.
| | - Ma Xiong
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, NHC Key Laboratory of Digestive Diseases, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, 145 Middle Shandong Road, Shanghai, China; Institute of Aging & Tissue Regeneration, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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8
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Alina M, Phillips E, Alharithi Y, Kadam L, Coussens L, Kumar S. Metabolic abnormalities in the bone marrow cells of young offspring born to obese mothers. RESEARCH SQUARE 2024:rs.3.rs-3830161. [PMID: 38313293 PMCID: PMC10836107 DOI: 10.21203/rs.3.rs-3830161/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
Intrauterine metabolic reprogramming occurs in obese mothers during gestation, putting the offspring at high risk of developing obesity and associated metabolic disorders even before birth. We have generated a mouse model of maternal high-fat diet-induced obesity that recapitulates the metabolic changes seen in humans born to obese women. Here, we profiled and compared the metabolic characteristics of bone marrow cells of newly weaned 3-week-old offspring of dams fed either a high-fat (Off-HFD) or a regular diet (Off-RD). We utilized a state-of-the-art targeted metabolomics approach coupled with a Seahorse metabolic analyzer. We revealed significant metabolic perturbation in the offspring of HFD-fed vs. RD-fed dams, including utilization of glucose primarily via oxidative phosphorylation. We also found a reduction in levels of amino acids, a phenomenon previously linked to bone marrow aging. Using flow cytometry, we identified a unique B cell population expressing CD19 and CD11b in the bone marrow of three-week-old offspring of high-fat diet-fed mothers, and found increased expression of Cyclooxygenase-2 (COX-2) on myeloid CD11b, and on CD11bhi B cells. Altogether, we demonstrate that the offspring of obese mothers show metabolic and immune changes in the bone marrow at a very young age and prior to any symptomatic metabolic disease.
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Fu Y, Yu B, Wang Q, Lu Z, Zhang H, Zhang D, Luo F, Liu R, Wang L, Chu Y. Oxidative stress-initiated one-carbon metabolism drives the generation of interleukin-10-producing B cells to resolve pneumonia. Cell Mol Immunol 2024; 21:19-32. [PMID: 38082147 PMCID: PMC10757717 DOI: 10.1038/s41423-023-01109-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 11/07/2023] [Indexed: 01/01/2024] Open
Abstract
The metabolic reprogramming underlying the generation of regulatory B cells during infectious diseases remains unknown. Using a Pseudomonas aeruginosa-induced pneumonia model, we reported that IL-10-producing B cells (IL-10+ B cells) play a key role in spontaneously resolving infection-mediated inflammation. Accumulated cytosolic reactive oxygen species (ROS) during inflammation were shown to drive IL-10+ B-cell generation by remodeling one-carbon metabolism. Depletion of the enzyme serine hydroxymethyltransferase 1 (Shmt1) led to inadequate one-carbon metabolism and decreased IL-10+ B-cell production. Furthermore, increased one-carbon flux elevated the levels of the methyl donor S-adenosylmethionine (SAM), altering histone H3 lysine 4 methylation (H3K4me) at the Il10 gene to promote chromatin accessibility and upregulate Il10 expression in B cells. Therefore, the one-carbon metabolism-associated compound ethacrynic acid (EA) was screened and found to potentially treat infectious pneumonia by boosting IL-10+ B-cell generation. Overall, these findings reveal that ROS serve as modulators to resolve inflammation by reprogramming one-carbon metabolism pathways in B cells.
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Affiliation(s)
- Ying Fu
- Department of Immunology, School of Basic Medical Sciences, Shanghai Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Baichao Yu
- Department of Immunology, School of Basic Medical Sciences, Shanghai Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Qi Wang
- Department of Immunology, School of Basic Medical Sciences, Shanghai Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Zhou Lu
- Zhongshan Hospital Institute of Clinical Science, Zhongshan Hospital, Shanghai, China
| | - Hushan Zhang
- Zhaotong Health Vocational College, Zhaotong, Yunnan, China
| | - Dan Zhang
- Department of Immunology, School of Basic Medical Sciences, Shanghai Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Feifei Luo
- Department of Digestive Diseases, Huashan Hospital, Fudan University, Shanghai, China
| | - Ronghua Liu
- Department of Immunology, School of Basic Medical Sciences, Shanghai Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
- Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Luman Wang
- Department of Immunology, School of Basic Medical Sciences, Shanghai Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.
- Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, Shanghai Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China.
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Phillips E, Alharithi Y, Kadam L, Coussens LM, Kumar S, Maloyan A. Metabolic abnormalities in the bone marrow cells of young offspring born to obese mothers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.29.569274. [PMID: 38077037 PMCID: PMC10705475 DOI: 10.1101/2023.11.29.569274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Intrauterine metabolic reprogramming occurs in obese mothers during gestation, putting the offspring at high risk of developing obesity and associated metabolic disorders even before birth. We have generated a mouse model of maternal high-fat diet-induced obesity that recapitulates the metabolic changes seen in humans. Here, we profiled and compared the metabolic characteristics of bone marrow cells of newly weaned 3-week-old offspring of dams fed either a high-fat (Off-HFD) or a regular diet (Off-RD). We utilized a state-of-the-art targeted metabolomics approach coupled with a Seahorse metabolic analyzer. We revealed significant metabolic perturbation in the offspring of HFD-fed vs. RD-fed dams, including utilization of glucose primarily via oxidative phosphorylation, and reduction in levels of amino acids, a phenomenon previously linked to aging. Furthermore, in the bone marrow of three-week-old offspring of high-fat diet-fed mothers, we identified a unique B cell population expressing CD19 and CD11b, and found increased expression of Cyclooxygenase-2 (COX-2) on myeloid CD11b, and on CD11b hi B cells, with all the populations being significantly more abundant in offspring of dams fed HFD but not a regular diet. Altogether, we demonstrate that the offspring of obese mothers show metabolic and immune changes in the bone marrow at a very young age and prior to any symptomatic metabolic disease.
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Wang C, Han M, Li X, Lv J, Zhuang W, Xie L, Liu G, Saimaier K, Han S, Shi C, Hua Q, Zhang R, Jiang X, Wang G, Du C. TPN10475 alleviates concanavalin A-induced autoimmune hepatitis by limiting T cell development and function through inhibition of PI3K-AKT pathway. Int Immunopharmacol 2023; 125:111110. [PMID: 37883813 DOI: 10.1016/j.intimp.2023.111110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 10/15/2023] [Accepted: 10/19/2023] [Indexed: 10/28/2023]
Abstract
Autoimmune hepatitis (AIH) is an inflammatory liver disease in which the autoimmune system instigates an attack on the liver, causing inflammation and liver injury, and its incidence has increased worldwide in recent years. The mouse model of acute hepatitis established by concanavalin A (Con A) is a typical and recognized mouse model for the study of T-cell-dependent liver injury. In this study, we aimed to investigate whether the artemisinin derivative TPN10475 could alleviate AIH and its possible mechanisms. TPN10475 effectively inhibited lymphocyte proliferation and IFN-γ+ T cells production in vitro, alleviated liver injury by decreasing infiltrating inflammatory T cells producing IFN-γ in the liver and peripheral immune tissues, and demonstrated that TPN10475 weakened the activation and function of T cells by inhibiting PI3K-AKT signaling pathway. These results suggested that TPN10475 may be a potential drug for the treatment of AIH, and the inhibition of PI3K-AKT signaling pathway may provide new ideas for the study of the pathogenesis of AIH.
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Affiliation(s)
- Chun Wang
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Mengyao Han
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Xinhang Li
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Jie Lv
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Wei Zhuang
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China; University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China; National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Ling Xie
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Guangyu Liu
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Kaidireya Saimaier
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Sanxing Han
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Changjie Shi
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Qiuhong Hua
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Ru Zhang
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Xiangrui Jiang
- University of Chinese Academy of Sciences, No.19A Yuquan Road, Beijing 100049, China; CAS Key Laboratory for Receptor Research, Shanghai Institute of Materia, Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, China
| | - Guiying Wang
- Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, National Stem Cell Translational Resource Center, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
| | - Changsheng Du
- Putuo People's Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.
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12
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Wei X, Cheng X, Luo Y, Li X. Umbilical Cord-Derived Mesenchymal Stem Cells Attenuate S100-Induced Autoimmune Hepatitis via Modulating Th1 and Th17 Cell Responses in Mice. Stem Cells Int 2023; 2023:9992207. [PMID: 37881518 PMCID: PMC10597736 DOI: 10.1155/2023/9992207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 09/08/2023] [Accepted: 09/19/2023] [Indexed: 10/27/2023] Open
Abstract
Currently, the first-line treatment for autoimmune hepatitis (AIH) is still the combination of glucocorticoids or immunosuppressants. However, hormone and immunosuppressive therapy can cause serious side effects, such as Cushing syndrome and bone marrow suppression. Previous studies reported on the applicability and safety of mesenchymal stem cells (MSCs) to ameliorate liver inflammation and fibrosis. However, the characteristics of MSCs sources directly contribute to the different conclusions on the mechanisms underlying MSC-mediated immunoregulation. Bone marrow-derived MSCs can exert an immunosuppression effect to ameliorate the S100-induced AIH model by inhibiting several proinflammatory cytokines and upregulating of PD-L1 in liver tissue. It is not clear whether human umbilical cord-derived MSCs (hUC-MSCs) could directly inhibit liver inflammation and ultimately alleviate the dysfunction of hepatocytes in the AIH model. First, hUC-MSCs were extracted from umbilical cord tissue, and the basic biological properties and multilineage differentiation potential were examined. Second, 1 × 106 hUC-MSCs were administered intravenously to AIH mice. At the peak of the disease, serum levels of alanine aminotransferase and aspartate aminotransferase and pathologic damage to liver tissue were measured to evaluate liver function and degree of inflammation. We also observed that the infiltration of CD4+ T cells in the liver was significantly reduced. Furthermore, the frequency of the splenic IFNγ- and IL-17A- producing CD4+ T cells were also significantly decreased, while we only observed an increasing trend in Treg cells in liver tissue. Third, an RNA sequencing analysis of liver tissue was performed, which showed that in the UC-MSC-treated group, the transcriptional profiles of inflammation-related signaling pathways were significantly negatively regulated compared to those of phosphate-buffered saline-treated mice. Collectively, these findings indicated the potential of hUC-MSC to suppress immune responses in immune anomaly mediated liver disease, thus offering a potential clinical option to improve AIH.
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Affiliation(s)
- Xiaofeng Wei
- The First Hospital of Lanzhou University, Lanzhou City, Gansu Province, China
- Key Laboratory of Biotherapy and Regenerative Medicine, The First Hospital of Lanzhou University, Lanzhou City, Gansu Province 730000, China
| | - Xinhong Cheng
- The First School of Clinical Medicine, Lanzhou University, Lanzhou City, Gansu Province, China
| | - Yang Luo
- The First Hospital of Lanzhou University, Lanzhou City, Gansu Province, China
- Key Laboratory of Biotherapy and Regenerative Medicine, The First Hospital of Lanzhou University, Lanzhou City, Gansu Province 730000, China
| | - Xun Li
- The First Hospital of Lanzhou University, Lanzhou City, Gansu Province, China
- Key Laboratory of Biotherapy and Regenerative Medicine, The First Hospital of Lanzhou University, Lanzhou City, Gansu Province 730000, China
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13
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Lübbering D, Preti M, Schlott L, Schultheiß C, Weidemann S, Lohse AW, Binder M, Carambia A, Herkel J. Autoantigen-selected B cells are bystanders in spontaneous T cell-driven experimental autoimmune hepatitis. Immunology 2023; 170:214-229. [PMID: 37243425 DOI: 10.1111/imm.13665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Autoreactive B cells are considered pathogenic drivers in many autoimmune diseases; however, it is not clear whether autoimmune B cells are invariably pathogenic or whether they can also arise as bystanders of T cell-driven autoimmune pathology. Here, we studied the B cell response in an autoantigen- and CD4+ T cell-driven model of autoimmune hepatitis (AIH), the Alb-iGP_Smarta mouse in which expression of a viral model antigen (GP) in hepatocytes and its recognition by GP-specific CD4+ T cells causes spontaneous AIH-like disease. T cell-driven AIH in Alb-iGP_Smarta mice was marked by autoantibodies and hepatic infiltration of plasma cells and B cells, particularly of isotype-switched memory B cells, indicating antigen-driven selection and activation. Immunosequencing of B cell receptor repertoires confirmed B cell expansion selectively in the liver, which was most likely driven by the hepatic GP model antigen, as indicated by branched networks of connected sequences and elevated levels of IgG antibodies to GP. However, intrahepatic B cells did not produce increased levels of cytokines and their depletion with anti-CD20 antibody did not alter the CD4+ T cell response in Alb-iGP_Smarta mice. Moreover, B cell depletion did not prevent spontaneous liver inflammation and AIH-like disease in Alb-iGP_Smarta mice. In conclusion, selection and isotype-switch of liver-infiltrating B cells was dependent on the presence of CD4+ T cells recognizing liver antigen. However, recognition of hepatic antigen by CD4+ T cells and CD4+ T cell-mediated hepatitis was not dependent on B cells. Thus, autoreactive B cells can be bystanders and need not be drivers of liver inflammation in AIH.
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Affiliation(s)
- David Lübbering
- First Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Max Preti
- First Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Lena Schlott
- First Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Christoph Schultheiß
- Department of Internal Medicine IV, Oncology/Hematology, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
| | - Sören Weidemann
- Department of Pathology, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Ansgar W Lohse
- First Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Mascha Binder
- Department of Internal Medicine IV, Oncology/Hematology, Martin-Luther-University Halle-Wittenberg, Halle (Saale), Germany
| | - Antonella Carambia
- First Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes Herkel
- First Department of Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
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14
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Popa-Fotea NM, Ferdoschi CE, Micheu MM. Molecular and cellular mechanisms of inflammation in atherosclerosis. Front Cardiovasc Med 2023; 10:1200341. [PMID: 37600028 PMCID: PMC10434786 DOI: 10.3389/fcvm.2023.1200341] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 07/14/2023] [Indexed: 08/22/2023] Open
Abstract
Atherosclerosis and its complications are a major cause of morbidity and mortality worldwide in spite of the improved medical and invasive treatment in terms of revascularization. Atherosclerosis is a dynamic, multi-step process in which inflammation is a ubiquitous component participating in the initiation, development, and entanglements of the atherosclerotic plaque. After activation, the immune system, either native or acquired, is part of the atherosclerotic dynamics enhancing the pro-atherogenic function of immune or non-immune cells, such as endothelial cells, smooth muscle cells, or platelets, through mediators such as cytokines or directly by cell-to-cell interaction. Cytokines are molecules secreted by the activated cells mentioned above that mediate the inflammatory component of atherosclerosis whose function is to stimulate the immune cells and the production of further cytokines. This review provides insights of the cell axis activation and specific mechanisms and pathways through which inflammation actuates atherosclerosis.
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Affiliation(s)
- Nicoleta-Monica Popa-Fotea
- Department 4 Cardio-Thoracic Pathology, University of Medicine and Pharmacy “Carol Davila,”Bucharest, Romania
- Cardiology Department, Emergency Clinical Hospital, Bucharest, Romania
| | - Corina-Elena Ferdoschi
- Department 4 Cardio-Thoracic Pathology, University of Medicine and Pharmacy “Carol Davila,”Bucharest, Romania
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15
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Brandi J, Wiethe C, Riehn M, Jacobs T. OMIP-93: A 41-color high parameter panel to characterize various co-inhibitory molecules and their ligands in the lymphoid and myeloid compartment in mice. Cytometry A 2023; 103:624-630. [PMID: 37219006 DOI: 10.1002/cyto.a.24740] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 03/03/2023] [Accepted: 05/04/2023] [Indexed: 05/24/2023]
Abstract
This 41-color panel has been designed to characterize both the lymphoid and the myeloid compartments in mice. The number of immune cells isolated from organs is often low, whilst an increasing number of factors need to be analyzed to gain a deeper understanding of the complexity of an immune response. With a focus on T cells, their activation and differentiation status, as well as their expression of several co-inhibitory and effector molecules, this panel also allows the analysis of ligands to these co-inhibitory molecules on antigen-presenting cells. This panel enables deep phenotypic characterization of CD4+ and CD8+ T cells, regulatory T cells, γδ T cells, NK T cells, B cells, NK cells, monocytes, macrophages, dendritic cells, and neutrophils. Whilst previous panels have focused on these topics individually, this is the first panel to enable simultaneous analysis of these compartments, thus enabling a comprehensive analysis with a limited number of immune cells/sample size. This panel is designed to analyze and compare the immune response in different mouse models of infectious diseases, but can also be extended to other disease models, for example tumors or autoimmune diseases. Here, we apply this panel to C57BL/6 mice infected with Plasmodium berghei ANKA, a mouse model of cerebral malaria.
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Affiliation(s)
- Johannes Brandi
- Protozoa Immunology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Carsten Wiethe
- Marketing and Scientific Application, BioLegend Inc, San Diego, California, USA
| | - Mathias Riehn
- Protozoa Immunology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Thomas Jacobs
- Protozoa Immunology, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
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16
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Nguyen JN, Chauhan A. Bystanders or not? Microglia and lymphocytes in aging and stroke. Neural Regen Res 2023; 18:1397-1403. [PMID: 36571333 PMCID: PMC10075112 DOI: 10.4103/1673-5374.360345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/18/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022] Open
Abstract
As the average age of the world population increases, more people will face debilitating aging-associated conditions, including dementia and stroke. Not only does the incidence of these conditions increase with age, but the recovery afterward is often worse in older patients. Researchers and health professionals must unveil and understand the factors behind age-associated diseases to develop a therapy for older patients. Aging causes profound changes in the immune system including the activation of microglia in the brain. Activated microglia promote T lymphocyte transmigration leading to an increase in neuroinflammation, white matter damage, and cognitive impairment in both older humans and rodents. The presence of T and B lymphocytes is observed in the aged brain and correlates with worse stroke outcomes. Preclinical strategies in stroke target either microglia or the lymphocytes or the communications between them to promote functional recovery in aged subjects. In this review, we examine the role of the microglia and T and B lymphocytes in aging and how they contribute to cognitive impairment. Additionally, we provide an important update on the contribution of these cells and their interactions in preclinical aged stroke.
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Affiliation(s)
- Justin N. Nguyen
- University of Texas McGovern Medical School at Houston, Houston, TX, USA
| | - Anjali Chauhan
- Department of Neurology, University of Texas McGovern Medical School at Houston, Houston, TX, USA
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17
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Fujimori S, Chu PS, Teratani T, Harada Y, Suzuki T, Amiya T, Taniki N, Kasuga R, Mikami Y, Koda Y, Ichikawa M, Tabuchi T, Morikawa R, Yamataka K, Noguchi F, Tsujikawa H, Kurebayashi Y, Sakamoto M, Kanai T, Nakamoto N. IL-15-producing splenic B cells play pathogenic roles in the development of autoimmune hepatitis. JHEP Rep 2023; 5:100757. [PMID: 37305442 PMCID: PMC10251155 DOI: 10.1016/j.jhepr.2023.100757] [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: 10/09/2022] [Revised: 03/02/2023] [Accepted: 03/21/2023] [Indexed: 06/13/2023] Open
Abstract
Background & Aims B-cell depletion therapy with an anti-CD20 is an effective treatment strategy for patients with refractory autoimmune hepatitis (AIH). However, the mechanisms underlying B-cell action are unclear. Methods Herein, we used the adeno-associated virus IL-12 model, in which hepatic IL-12 expression triggers liver injuries characteristic of AIH. We also analysed the clinical samples of patients with AIH. Results B-cell depletion using anti-CD20 or splenectomy was found to improve liver functions and decrease the cytotoxic CD8+ T-cell (cytotoxic T lymphocyte [CTL]) count in the liver. This improvement was reversed by the adoptive transfer of splenic B cells derived from AAV IL-12-treated mice to splenectomised mice as it caused the hepatic CTL count to increase. RNA-sequencing analysis identified IL-15 as a key factor in pathogenic B cells, which promotes CTL expansion and subsequent migration to the liver via the CXCL9/CXCR3 axis. Indeed, IL-15 neutralisation ameliorated hepatitis by suppressing splenic and hepatic CTLs in vivo. The close distribution of B220+ B cells and CD8+ T cells in the spleen of AIH mice suggested mutual interactions. Mechanistically, IFNγ and CD40L/CD40 signalling were indispensable for the expression of IL-15 in B cells, and in vitro co-culture experiments revealed that splenic CD40L+CD8+ T cells promoted IL-15 production in B cells, which led to CTL expansion. In patients with AIH, high serum IL-15 concentration and IL-15+ B-cell counts, positively correlating with serum alanine aminotransferase levels, support translation and potential therapeutic targeting in human AIH. Conclusions This investigation elucidated the roles of IL-15-producing splenic B cells that occur in concert with pathogenic CD8+ T cells during the development of AIH. Impact and Implications IL-15-producing B cells were shown to exacerbate experimental AIH via cytotoxic T lymphocyte expansion. CD40L+CD8+ T cells promoted IL-15 expression in B cells, indicating the mutual interaction of both cells. High serum IL-15 concentrations, IL-15+ B-cell counts, and CD40L+IL-15Rα+CD8+ T-cell counts were confirmed in the blood of patients with AIH.
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Affiliation(s)
- Sota Fujimori
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
- Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Po-Sung Chu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Toshiaki Teratani
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yosuke Harada
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takahiro Suzuki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takeru Amiya
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
- Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Nobuhito Taniki
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Ryosuke Kasuga
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yohei Mikami
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yuzo Koda
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
- Mitsubishi Tanabe Pharma Corporation, Kanagawa, Japan
| | - Masataka Ichikawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takaya Tabuchi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Rei Morikawa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Karin Yamataka
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Fumie Noguchi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hanako Tsujikawa
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Yutaka Kurebayashi
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Michiie Sakamoto
- Department of Pathology, Keio University School of Medicine, Tokyo, Japan
| | - Takanori Kanai
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
- Japan Agency for Medical Research and Development, AMED, Tokyo, Japan
| | - Nobuhiro Nakamoto
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan
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18
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Parlar YE, Ayar SN, Cagdas D, Balaban YH. Liver immunity, autoimmunity, and inborn errors of immunity. World J Hepatol 2023; 15:52-67. [PMID: 36744162 PMCID: PMC9896502 DOI: 10.4254/wjh.v15.i1.52] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/23/2022] [Accepted: 12/23/2022] [Indexed: 01/16/2023] Open
Abstract
The liver is the front line organ of the immune system. The liver contains the largest collection of phagocytic cells in the body that detect both pathogens that enter through the gut and endogenously produced antigens. This is possible by the highly developed differentiation capacity of the liver immune system between self-antigens or non-self-antigens, such as food antigens or pathogens. As an immune active organ, the liver functions as a gatekeeping barrier from the outside world, and it can create a rapid and strong immune response, under unfavorable conditions. However, the liver's assumed immune status is anti-inflammatory or immuno-tolerant. Dynamic interactions between the numerous populations of immune cells in the liver are key for maintaining the delicate balance between immune screening and immune tolerance. The anatomical structure of the liver can facilitate the preparation of lymphocytes, modulate the immune response against hepatotropic pathogens, and contribute to some of its unique immunological properties, particularly its capacity to induce antigen-specific tolerance. Since liver sinusoidal endothelial cell is fenestrated and lacks a basement membrane, circulating lymphocytes can closely contact with antigens, displayed by endothelial cells, Kupffer cells, and dendritic cells while passing through the sinusoids. Loss of immune tolerance, leading to an autoaggressive immune response in the liver, if not controlled, can lead to the induction of autoimmune or autoinflammatory diseases. This review mentions the unique features of liver immunity, and dysregulated immune responses in patients with autoimmune liver diseases who have a close association with inborn errors of immunity have also been the emphases.
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Affiliation(s)
- Yavuz Emre Parlar
- Department of Gastroenterology, Hacettepe University Faculty of Medicine, Ankara 06100, Turkey
| | - Sefika Nur Ayar
- Department of Internal Medicine, Hacettepe University Faculty of Medicine, Ankara 06100, Turkey
| | - Deniz Cagdas
- Department of Pediatric Immunology, Hacettepe University Ihsan Dogramaci Children's Hospital, Ankara 06100, Turkey
| | - Yasemin H Balaban
- Department of Gastroenterology, Hacettepe University Faculty of Medicine, Ankara 06100, Turkey
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19
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Ou Y, Chen R, Qian Q, Cui N, Miao Q, Tang R, You Z, Ma X, Wang Q. The immunological characteristics of TSPAN1 expressing B cells in autoimmune hepatitis. Front Immunol 2022; 13:1076594. [PMID: 36591302 PMCID: PMC9797502 DOI: 10.3389/fimmu.2022.1076594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 11/30/2022] [Indexed: 12/23/2022] Open
Abstract
Background and aims Tetraspanin proteins are closely related to the functional changes of B cells, including antigen presentation, production of cytokines, and transduction. We aim to explore the potential role of Tetraspanin 1 (TSPAN1) in the biological activities of B cells in AIH. Methods and results Herein, this study found that numbers of cells expressing TSPAN1 were significantly increased in AIH patients compared to PBC, chronic hepatitis B, and healthy control (P < 0.0001). Moreover, there was a positive correlation between numbers of TSPAN1+ cells and AIH disease severity (P < 0.0001). Immunofluorescence staining further confirmed that TSPAN1 was primarily expressed on CD19+ B cells. Flow-cytometric analysis showed that TSPAN1+ B cells secreted more inflammatory cytokines and expressed higher level of CD86 than TSPAN1- B cells. Furthermore, compared with TSAPN1- cells, the expression of CXCR3 on TSPAN1+ cells was also higher. Meanwhile, CXCL10, the ligand of CXCR3, was significantly elevated in the liver of AIH (P < 0.01) and had positive correlation with the quantities of TSPAN1 (P < 0.05). Interestingly, the numbers of TSPAN1+ B cells were decreased in AIH patients after immunosuppressive therapy. Conclusions TSPAN1+ B cells in the liver may promote the progression of AIH via secreting cytokines and presenting antigens. The chemotactic movement of TSPAN1+ B cells toward the liver of AIH was possibly due to CXCR3 - CXCL10 interaction.
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Affiliation(s)
- Yiyan Ou
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Ruiling Chen
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Qiwei Qian
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Nana Cui
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Qi Miao
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Ruqi Tang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Zhengrui You
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China,*Correspondence: Qixia Wang, ; Xiong Ma, ; Zhengrui You,
| | - Xiong Ma
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China,Division of Infectious Diseases, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China,*Correspondence: Qixia Wang, ; Xiong Ma, ; Zhengrui You,
| | - Qixia Wang
- Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, State Key Laboratory for Oncogenes and Related Genes, Renji Hospital, School of Medicine, Shanghai Institute of Digestive Disease, Shanghai Jiao Tong University, Shanghai, China,Division of Infectious Diseases, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China,*Correspondence: Qixia Wang, ; Xiong Ma, ; Zhengrui You,
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20
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Korf JM, Honarpisheh P, Mohan EC, Banerjee A, Blasco-Conesa MP, Honarpisheh P, Guzman GU, Khan R, Ganesh BP, Hazen AL, Lee J, Kumar A, McCullough LD, Chauhan A. CD11b high B Cells Increase after Stroke and Regulate Microglia. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 209:288-300. [PMID: 35732342 PMCID: PMC9446461 DOI: 10.4049/jimmunol.2100884] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 04/22/2022] [Indexed: 06/02/2023]
Abstract
Recent studies have highlighted the deleterious contributions of B cells to post-stroke recovery and cognitive decline. Different B cell subsets have been proposed on the basis of expression levels of transcription factors (e.g., T-bet) as well as specific surface proteins. CD11b (α-chain of integrin) is expressed by several immune cell types and is involved in regulation of cell motility, phagocytosis, and other essential functions of host immunity. Although B cells express CD11b, the CD11bhigh subset of B cells has not been well characterized, especially in immune dysregulation seen with aging and after stroke. Here, we investigate the role of CD11bhigh B cells in immune responses after stroke in young and aged mice. We evaluated the ability of CD11bhigh B cells to influence pro- and anti-inflammatory phenotypes of young and aged microglia (MG). We hypothesized that CD11bhigh B cells accumulate in the brain and contribute to neuroinflammation in aging and after stroke. We found that CD11bhigh B cells are a heterogeneous subpopulation of B cells predominantly present in naive aged mice. Their frequency increases in the brain after stroke in young and aged mice. Importantly, CD11bhigh B cells regulate MG phenotype and increase MG phagocytosis in both ex vivo and in vivo settings, likely by production of regulatory cytokines (e.g., TNF-α). As both APCs and adaptive immune cells with long-term memory function, B cells are uniquely positioned to regulate acute and chronic phases of the post-stroke immune response, and their influence is subset specific.
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Affiliation(s)
- Janelle M Korf
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
- University of Texas MD Anderson Cancer Center, UTHealth Graduate School of Biomedical Sciences, Houston, TX
| | - Pedram Honarpisheh
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
- University of Texas MD Anderson Cancer Center, UTHealth Graduate School of Biomedical Sciences, Houston, TX
| | - Eric C Mohan
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Anik Banerjee
- University of Texas MD Anderson Cancer Center, UTHealth Graduate School of Biomedical Sciences, Houston, TX
| | | | - Parisa Honarpisheh
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Gary U Guzman
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Romeesa Khan
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Bhanu P Ganesh
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Amy L Hazen
- University of Texas McGovern Medical School, Brown Foundation Institute of Molecular Medicine for the Prevention of Human Diseases, Houston, TX
| | - Juneyoung Lee
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Aditya Kumar
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Louise D McCullough
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX
| | - Anjali Chauhan
- Department of Neurology, University of Texas McGovern Medical School, Houston, TX;
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21
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Mouat IC, Goldberg E, Horwitz MS. Age-associated B cells in autoimmune diseases. Cell Mol Life Sci 2022; 79:402. [PMID: 35798993 PMCID: PMC9263041 DOI: 10.1007/s00018-022-04433-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 06/07/2022] [Accepted: 06/15/2022] [Indexed: 12/15/2022]
Abstract
Age-associated B cells (ABCs) are a transcriptionally and functionally unique B cell population. In addition to arising with age and following infection, ABCs are expanded during autoimmune disease, including those with systemic lupus erythematosus, multiple sclerosis, and rheumatoid arthritis. The exact nature of how ABCs impact disease remains unclear. Here, we review what is known regarding ABC development and distribution during diseases including systemic lupus erythematosus, multiple sclerosis, and rheumatoid arthritis. We discuss possible mechanisms by which ABCs could contribute to disease, including the production of cytokines and autoantibodies or stimulation of T cells. Finally, we speculate on how ABCs might act as mediators between sex, infection, and autoimmune disease, and discuss avenues for further research.
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Affiliation(s)
- Isobel C Mouat
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, UK
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada
| | - Erin Goldberg
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada
| | - Marc S Horwitz
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada.
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22
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Gangadharan GG, Mahajan V. Response to Tinospora cordifolia (Giloy)-induced liver injury during the COVID-19 pandemic-Multicenter nationwide study from India. Hepatol Commun 2022; 6:2993-2994. [PMID: 35616295 PMCID: PMC9347749 DOI: 10.1002/hep4.1986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 04/10/2022] [Indexed: 11/11/2022] Open
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23
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Fu Y, Wang L, Yu B, Xu D, Chu Y. Immunometabolism shapes B cell fate and functions. Immunology 2022; 166:444-457. [PMID: 35569110 DOI: 10.1111/imm.13499] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 03/28/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- Ying Fu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences Fudan University Shanghai China
| | - Luman Wang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences Fudan University Shanghai China
- Department of Endocrinology and Metabolism, Shanghai Fifth People's Hospital Fudan University Shanghai China
- Biotherapy Research Center Fudan University Shanghai China
| | - Baichao Yu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences Fudan University Shanghai China
| | - Damo Xu
- School of Medicine Shenzhen University Shenzhen China
- Third Affiliated Hospital of Shenzhen University Shenzhen Luohu Hospital Group Shenzhen China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences Fudan University Shanghai China
- Biotherapy Research Center Fudan University Shanghai China
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24
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Abstract
Age-associated B cells (ABCs) are a recently identified, unique B cell population that displays both protective and pathogenic characteristics, depending on the context. A major role of ABCs is to protect from viral infection. ABCs expand during an array of viral infections and display various functional capacities, including secretion of antibodies and activation of T cells. Following resolution of infection, ABCs appear to persist and play a crucial role in memory and recall responses. Here, we review the currently understanding of ABCs in the antiviral response in both humans and mice. We discuss avenues for future research, including the impact of sex on the ABC population and heterogeneity of ABCs between contexts.
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Affiliation(s)
- Isobel C. Mouat
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Marc S. Horwitz
- Department of Microbiology and Immunology, University of British Columbia, Vancouver, British Columbia, Canada
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25
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Liu Q, Tian H, Kang Y, Tian Y, Li L, Kang X, Yang H, Wang Y, Tian J, Zhang F, Tong M, Cai H, Fan W. Probiotics alleviate autoimmune hepatitis in mice through modulation of gut microbiota and intestinal permeability. J Nutr Biochem 2021; 98:108863. [PMID: 34517094 DOI: 10.1016/j.jnutbio.2021.108863] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 05/04/2021] [Accepted: 07/25/2021] [Indexed: 02/08/2023]
Abstract
Autoimmune hepatitis (AIH) is an immune-mediated type of chronic liver inflammation accompanied by intestinal flora imbalance. Probiotics have been reported to ameliorate imbalances in the intestinal flora. This study aimed to investigate the effects of compound probiotic in the AIH mouse model. AIH mice were gavaged with compound probiotic and injected intraperitoneally with dexamethasone (dex) for 42 days. The results showed that these treatments suppressed hepatic inflammatory cell infiltration, serum transaminase, and Th1 and Th17 cells. However, Treg cells were increased only in the probiotics group, which indicates an immunomodulatory role of the compound probiotic. The compound probiotic maintained intestinal barrier integrity, blocked lipopolysaccharide (LPS) translocation, and inhibited the activation of the TLR4/NF-κB pathway and the production of inflammatory factors in the liver and ileum. Moreover, the compound probiotic treatment increased the abundance of beneficial bacteria and reduced the abundance of potentially harmful bacteria in gut. Compound probiotic may improve ileal barrier function while increasing the diversity of the intestinal flora, blocking the translocation of gut-derived LPS to the liver and therefore preventing activation of the TLR4/NF-κB pathway. The resulting inhibition of pro-inflammatory factor production facilitates AIH remission.
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Affiliation(s)
- Qingqing Liu
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Haixia Tian
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Yongbo Kang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Yan Tian
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Lin Li
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Xing Kang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Hao Yang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Yanhong Wang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Jihua Tian
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Fan Zhang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Mingwei Tong
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Hongyan Cai
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Weiping Fan
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China.
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26
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Fu Y, Wang Z, Yu B, Lin Y, Huang E, Liu R, Zhao C, Lu M, Xu W, Liu H, Liu Y, Wang L, Chu Y. Intestinal CD11b + B Cells Ameliorate Colitis by Secreting Immunoglobulin A. Front Immunol 2021; 12:697725. [PMID: 34804004 PMCID: PMC8595478 DOI: 10.3389/fimmu.2021.697725] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 10/14/2021] [Indexed: 12/12/2022] Open
Abstract
The intestinal mucosal immune environment requires multiple immune cells to maintain homeostasis. Although intestinal B cells are among the most important immune cells, little is known about the mechanism that they employ to regulate immune homeostasis. In this study, we found that CD11b+ B cells significantly accumulated in the gut lamina propria and Peyer's patches in dextran sulfate sodium-induced colitis mouse models and patients with ulcerative colitis. Adoptive transfer of CD11b+ B cells, but not CD11b-/- B cells, effectively ameliorated colitis and exhibited therapeutic effects. Furthermore, CD11b+ B cells were found to produce higher levels of IgA than CD11b- B cells. CD11b deficiency in B cells dampened IgA production, resulting in the loss of their ability to ameliorate colitis. Mechanistically, CD11b+ B cells expressed abundant TGF-β and TGF-β receptor II, as well as highly activate phosphorylated Smad2/3 signaling pathway, consequently promoting the class switch to IgA. Collectively, our findings demonstrate that CD11b+ B cells are essential intestinal suppressive immune cells and the primary source of intestinal IgA, which plays an indispensable role in maintaining intestinal homeostasis.
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Affiliation(s)
- Ying Fu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Zhiming Wang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Baichao Yu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Yuli Lin
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Enyu Huang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Pathology, The University of Hong Kong, Hong Kong, Hong Kong, SAR China
| | - Ronghua Liu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Chujun Zhao
- Department of Biomedical Engineering, Columbia University, New York, NY, United States
| | - Mingfang Lu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Wei Xu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Hongchun Liu
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yongzhong Liu
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Luman Wang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Department of Endocrinology and Metabolism, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.,Biotherapy Research Center, Fudan University, Shanghai, China
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27
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Shi Y. PLAN B for immunotherapy: Promoting and leveraging anti-tumor B cell immunity. J Control Release 2021; 339:156-163. [PMID: 34563591 DOI: 10.1016/j.jconrel.2021.09.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 09/19/2021] [Accepted: 09/21/2021] [Indexed: 12/19/2022]
Abstract
Current immuno-oncology primarily focuses on adaptive cellular immunity mediated by T lymphocytes. The other important lymphocytes, B cells, are largely ignored in cancer immunotherapy. B cells are generally considered to be responsible for humoral immune response to viral and bacterial infections. The role of B cells in cancer immunity has long been under debate. Recently, increasing evidence from both preclinical and clinical research has shown that B cells can also induce potent anti-cancer immunity, via humoral and cellular immune responses. Yet it is unclear how to efficiently integrate B cell immunity in cancer immunotherapy. In the current perspective, anti-tumor immunity of B cells is discussed regarding antibody production, antigen presentation, cytokine release and contribution to intratumoral tertiary lymphoid structures. Afterwards, immunosuppressive regulatory phenotypes of B cells are summarized. Furthermore, strategies to activate and modulate B cells using nanomedicines and biomaterials are discussed. This article provides a unique perspective on "PLAN B" (promoting and leveraging anti-tumor B cell immunity) using nanomedicines and biomaterials for cancer immunotherapy. This is envisaged to form a new research direction with the potential to reach the next breakthrough in immunotherapy.
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Affiliation(s)
- Yang Shi
- Institute for Experimental Molecular Imaging, Uniklinik RWTH Aachen and Helmholtz Institute for Biomedical Engineering, RWTH Aachen University, Aachen 52074, Germany.
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28
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van Hooren L, Vaccaro A, Ramachandran M, Vazaios K, Libard S, van de Walle T, Georganaki M, Huang H, Pietilä I, Lau J, Ulvmar MH, Karlsson MCI, Zetterling M, Mangsbo SM, Jakola AS, Olsson Bontell T, Smits A, Essand M, Dimberg A. Agonistic CD40 therapy induces tertiary lymphoid structures but impairs responses to checkpoint blockade in glioma. Nat Commun 2021; 12:4127. [PMID: 34226552 PMCID: PMC8257767 DOI: 10.1038/s41467-021-24347-7] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 06/09/2021] [Indexed: 12/19/2022] Open
Abstract
Gliomas are brain tumors characterized by an immunosuppressive microenvironment. Immunostimulatory agonistic CD40 antibodies (αCD40) are in clinical development for solid tumors, but are yet to be evaluated for glioma. Here, we demonstrate that systemic delivery of αCD40 in preclinical glioma models induces the formation of tertiary lymphoid structures (TLS) in proximity of meningeal tissue. In treatment-naïve glioma patients, the presence of TLS correlates with increased T cell infiltration. However, systemic delivery of αCD40 induces hypofunctional T cells and impairs the response to immune checkpoint inhibitors in pre-clinical glioma models. This is associated with a systemic induction of suppressive CD11b+ B cells post-αCD40 treatment, which accumulate in the tumor microenvironment. Our work unveils the pleiotropic effects of αCD40 therapy in glioma and reveals that immunotherapies can modulate TLS formation in the brain, opening up for future opportunities to regulate the immune response. Agonistic CD40 antibodies (αCD40) have broad immunostimulatory properties, however their efficacy in glioma remains unclear. Here the authors show that αCD40 promotes the formation of tertiary lymphoid structures but does not improve survival and impairs the response to immune checkpoint blockade in murine glioma models.
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Affiliation(s)
- Luuk van Hooren
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Alessandra Vaccaro
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Mohanraj Ramachandran
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Konstantinos Vazaios
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Sylwia Libard
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.,Department of Pathology, Uppsala University Hospital, Uppsala, Sweden
| | - Tiarne van de Walle
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Maria Georganaki
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Hua Huang
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Ilkka Pietilä
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Joey Lau
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Maria H Ulvmar
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Mikael C I Karlsson
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Maria Zetterling
- Department of Neuroscience, Neurology, Uppsala University, Uppsala, Sweden
| | - Sara M Mangsbo
- Department of Pharmaceutical Biosciences, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Asgeir S Jakola
- Department of Neurosurgery, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Thomas Olsson Bontell
- Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.,Department of Clinical Pathology and Cytology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Anja Smits
- Department of Neuroscience, Neurology, Uppsala University, Uppsala, Sweden.,Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Magnus Essand
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden
| | - Anna Dimberg
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, The Rudbeck Laboratory, Uppsala University, Uppsala, Sweden.
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29
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Leonard C, Montamat G, Davril C, Domingues O, Hunewald O, Revets D, Guerin C, Blank S, Heckendorn J, Jardon G, Hentges F, Ollert M. Comprehensive mapping of immune tolerance yields a regulatory TNF receptor 2 signature in a murine model of successful Fel d 1-specific immunotherapy using high-dose CpG adjuvant. Allergy 2021; 76:2153-2165. [PMID: 33345329 PMCID: PMC8359185 DOI: 10.1111/all.14716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/27/2020] [Accepted: 12/09/2020] [Indexed: 01/23/2023]
Abstract
Background The prevalence of allergy to cat is expanding worldwide. Allergen‐specific immunotherapy (AIT) has advantages over symptomatic pharmacotherapy and promises long‐lasting disease control in allergic patients. However, there is still a need to improve cat AIT regarding efficacy, safety, and adherence to the treatment. Here, we aim to boost immune tolerance to the major cat allergen Fel d 1 by increasing the anti‐inflammatory activity of AIT with the established immunomodulatory adjuvant CpG, but at a higher dose than previously used in AIT. Methods Together with CpG, we used endotoxin‐free Fel d 1 as therapeutic allergen throughout the study in a BALB/c model of allergy to Fel d 1, thus mimicking the conditions of human AIT trials. Multidimensional immune phenotyping including mass cytometry (CyTOF) was applied to analyze AIT‐specific immune signatures. Results We show that AIT with high‐dose CpG in combination with endotoxin‐free Fel d 1 reverts all major hallmarks of allergy. High‐dimensional CyTOF analysis of the immune cell signatures initiating and sustaining the AIT effect indicates the simultaneous engagement of both, the pDC‐Treg and B‐cell axis, with the emergence of a systemic GATA3+ FoxP3hi biTreg population. The regulatory immune signature also suggests the involvement of the anti‐inflammatory TNF/TNFR2 signaling cascade in NK and B cells at an early stage and in Tregs later during AIT. Conclusion Our results highlight the potential of CpG adjuvant in a novel formulation to be further exploited for inducing allergen‐specific tolerance in patients with cat allergy or other allergic diseases.
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Affiliation(s)
- Cathy Leonard
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - Guillem Montamat
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
- Department of Clinical Research University of Southern Denmark Odense Denmark
| | - Caroline Davril
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - Olivia Domingues
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - Oliver Hunewald
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - Dominique Revets
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
- Quantitative Biology Unit National Cytometry Platform Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - Coralie Guerin
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
- Quantitative Biology Unit National Cytometry Platform Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - Simon Blank
- Center of Allergy and Environment (ZAUM) Technical University of Munich and Helmholtz Center Munich Member of the German Center of Lung Research (DZL) Munich Germany
| | - Justine Heckendorn
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - Gauthier Jardon
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
| | - François Hentges
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
- National Unit of Immunology‐Allergology Centre Hospitalier de Luxembourg Luxembourg Luxembourg
| | - Markus Ollert
- Department of Infection and Immunity Luxembourg Institute of Health Esch‐sur‐Alzette Luxembourg
- Department of Dermatology and Allergy Center Odense Research Center for Anaphylaxis Odense University Hospital University of Southern Denmark Odense Denmark
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30
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Sapra L, Bhardwaj A, Mishra PK, Garg B, Verma B, Mishra GC, Srivastava RK. Regulatory B Cells (Bregs) Inhibit Osteoclastogenesis and Play a Potential Role in Ameliorating Ovariectomy-Induced Bone Loss. Front Immunol 2021; 12:691081. [PMID: 34276682 PMCID: PMC8278221 DOI: 10.3389/fimmu.2021.691081] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 05/12/2021] [Indexed: 11/13/2022] Open
Abstract
Increasing evidence in recent years has suggested that regulatory B cells (Bregs) are one of the crucial modulators in various inflammatory disease conditions. However, no study to date has investigated the significance of Bregs in modulating osteoclastogenesis. To the best of our knowledge, in the present study, we for the first time examined the anti-osteoclastogenic potential of Bregs under in vitro conditions and observed that Bregs suppress RANKL-induced osteoclastogenesis in a dose-dependent manner. We further elucidated the mechanism behind the observed suppression of osteoclasts differentiation via Bregs. Our results clearly suggested that the observed anti-osteoclastogenic property of Bregs is mediated via the production of IL-10 cytokine. Next, we explored whether Bregs have any role in mediating inflammatory bone loss under post-menopausal osteoporotic conditions in ovx mice. Remarkably, our in vivo data clearly suggest that the frequencies of both CD19+IL-10+ Bregs and CD19+CD1dhiCD5+IL-10+ "B10" Bregs were significantly reduced in case of osteoporotic mice model. Moreover, we also found a significant reduction in serum IL-10 cytokine levels in osteoporotic mice, thereby further supporting our observations. Taken together, the present study for the first time establishes the direct role of regulatory B cells in modulating osteoclastogenesis in vitro. Further, our in vivo data suggest that modulations in the percentage of Bregs population along with its reduced potential to produce IL-10 might further exacerbate the observed bone loss in ovx mice.
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Affiliation(s)
- Leena Sapra
- Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Asha Bhardwaj
- Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Pradyumna Kumar Mishra
- Department of Molecular Biology, ICMR-National Institute for Research in Environmental Health, Bhopal, India
| | - Bhavuk Garg
- Department of Orthopaedics, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | - Bhupendra Verma
- Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
| | | | - Rupesh K. Srivastava
- Department of Biotechnology, All India Institute of Medical Sciences (AIIMS), New Delhi, India
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31
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Erdei A, Kovács KG, Nagy-Baló Z, Lukácsi S, Mácsik-Valent B, Kurucz I, Bajtay Z. New aspects in the regulation of human B cell functions by complement receptors CR1, CR2, CR3 and CR4. Immunol Lett 2021; 237:42-57. [PMID: 34186155 DOI: 10.1016/j.imlet.2021.06.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/17/2021] [Accepted: 06/23/2021] [Indexed: 10/21/2022]
Abstract
The involvement of complement in the regulation of antibody responses has been known for long. By now several additional B cell functions - including cytokine production and antigen presentation - have also been shown to be regulated by complement proteins. Most of these important activities are mediated by receptors interacting with activation fragments of the central component of the complement system C3, such as C3b, iC3b and C3d, which are covalently attached to antigens and immune complexes. This review summarizes the role of complement receptors interacting with these ligands, namely CR1 (CD35), CR2 (CD21), CR3 (CD11b/CD18) and CR4 (CD11c/CD18) expressed by B cells in health and disease. Although we focus on human B lymphocytes, we also aim to call the attention to important differences between human and mouse systems.
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Affiliation(s)
- Anna Erdei
- Department of Immunology, Eötvös Loránd University, Budapest, Hungary; MTA-ELTE Immunology Research Group, Eötvös Loránd University, Budapest, Hungary.
| | - Kristóf G Kovács
- Department of Immunology, Eötvös Loránd University, Budapest, Hungary
| | - Zsuzsa Nagy-Baló
- MTA-ELTE Immunology Research Group, Eötvös Loránd University, Budapest, Hungary
| | - Szilvia Lukácsi
- MTA-ELTE Immunology Research Group, Eötvös Loránd University, Budapest, Hungary
| | | | - István Kurucz
- MTA-ELTE Immunology Research Group, Eötvös Loránd University, Budapest, Hungary
| | - Zsuzsa Bajtay
- Department of Immunology, Eötvös Loránd University, Budapest, Hungary; MTA-ELTE Immunology Research Group, Eötvös Loránd University, Budapest, Hungary
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32
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Xing Y, Wang Z, Lu Z, Xia J, Xie Z, Jiao M, Liu R, Chu Y. MicroRNAs: immune modulators in cancer immunotherapy. IMMUNOTHERAPY ADVANCES 2021; 1:ltab006. [PMID: 35919742 PMCID: PMC9327120 DOI: 10.1093/immadv/ltab006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 04/18/2021] [Accepted: 05/07/2021] [Indexed: 12/27/2022] Open
Abstract
Summary
MicroRNA (miRNA) is a class of endogenous small non-coding RNA of 18–25 nucleotides and plays regulatory roles in both physiological and pathological processes. Emerging evidence support that miRNAs function as immune modulators in tumors. MiRNAs as tumor suppressors or oncogenes are also found to be able to modulate anti-tumor immunity or link the crosstalk between tumor cells and immune cells surrounding. Based on the specific regulating function, miRNAs can be used as predictive, prognostic biomarkers, and therapeutic targets in immunotherapy. Here, we review new findings about the role of miRNAs in modulating immune responses, as well as discuss mechanisms underlying their dysregulation, and their clinical potentials as indicators of tumor prognosis or to sensitize cancer immunotherapy.
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Affiliation(s)
- Yun Xing
- Shanghai Fifth People’s Hospital and Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P.R. China
| | - Zhiqiang Wang
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, P.R. China
| | - Zhou Lu
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, P.R. China
- Liver Cancer Institute, Zhongshan Hospital, Key Laboratory of Carcinogenesis and Cancer Invasion, Fudan University, Ministry of Education, Shanghai 200032, P.R. China
| | - Jie Xia
- Shanghai Fifth People’s Hospital and Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P.R. China
| | - Zhangjuan Xie
- Shanghai Fifth People’s Hospital and Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P.R. China
| | - Mengxia Jiao
- Shanghai Fifth People’s Hospital and Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P.R. China
| | - Ronghua Liu
- Shanghai Fifth People’s Hospital and Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P.R. China
| | - Yiwei Chu
- Shanghai Fifth People’s Hospital and Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, P.R. China
- Department of Immunology, School of Basic Medical Sciences, Fudan University, Shanghai 200032, P.R. China
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Cargill T, Culver EL. The Role of B Cells and B Cell Therapies in Immune-Mediated Liver Diseases. Front Immunol 2021; 12:661196. [PMID: 33936097 PMCID: PMC8079753 DOI: 10.3389/fimmu.2021.661196] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 03/25/2021] [Indexed: 12/12/2022] Open
Abstract
B cells form a branch of the adaptive immune system, essential for the body’s immune defense against pathogens. B cell dysfunction has been implicated in the pathogenesis of immune mediated liver diseases including autoimmune hepatitis, IgG4-related hepatobiliary disease, primary biliary cholangitis and primary sclerosing cholangitis. B cells may initiate and maintain immune related liver diseases in several ways including the production of autoantibodies and the activation of T cells via antigen presentation or cytokine production. Here we comprehensively review current knowledge on B cell mechanisms in immune mediated liver diseases, exploring disease pathogenesis, B cell therapies, and novel treatment targets. We identify key areas where future research should focus to enable the development of targeted B cell therapies.
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Affiliation(s)
- Tamsin Cargill
- Peter Medawar Building for Pathogen Research, Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Emma L Culver
- Oxford Liver Unit, John Radcliffe Hospital, Oxford, United Kingdom
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Liberal R, de Boer YS, Heneghan MA. Established and novel therapeutic options for autoimmune hepatitis. Lancet Gastroenterol Hepatol 2021; 6:315-326. [DOI: 10.1016/s2468-1253(20)30328-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 08/14/2020] [Accepted: 09/25/2020] [Indexed: 02/06/2023]
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Ding T, Su R, Wu R, Xue H, Wang Y, Su R, Gao C, Li X, Wang C. Frontiers of Autoantibodies in Autoimmune Disorders: Crosstalk Between Tfh/Tfr and Regulatory B Cells. Front Immunol 2021; 12:641013. [PMID: 33841422 PMCID: PMC8033031 DOI: 10.3389/fimmu.2021.641013] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 03/11/2021] [Indexed: 12/14/2022] Open
Abstract
Balance of Tfh/Tfr cell is critically important for the maintenance of immune tolerance, as evidenced by the fact that T follicular helper (Tfh) cells are central to the autoantibodies generation through providing necessary help for germinal center (GC) B cells, whereas T follicular regulatory (Tfr) cells significantly inhibit autoimmune inflammation process through restraining Tfh cell responses. However, signals underlying the regulation of Tfh and Tfr cells are largely undefined. Regulatory B cells (Bregs) is a heterogeneous subpopulation of B cells with immunosuppressive function. Considerable advances have been made in their functions to produce anti‐inflammatory cytokines and to regulate Th17, Th1, and Treg cells in autoimmune diseases. The recent identification of their correlations with dysregulated Tfr/Tfh cells and autoantibody production makes Bregs an important checkpoint in GC response. Bregs exert profound impacts on the differentiation, function, and distribution of Tfh and Tfr cells in the immune microenvironment. Thus, unraveling mechanistic information on Tfh-Breg and Tfr-Breg interactions will inspire novel implications for the establishment of homeostasis and prevention of autoantibodies in diverse diseases. This review summarizes the dysregulation of Tfh/Tfr cells in autoimmune diseases with a focus on the emerging role of Bregs in regulating the balance between Tfh and Tfr cells. The previously unsuspected crosstalk between Bregs and Tfh/Tfr cells will be beneficial to understand the cellular mechanisms of autoantibody production and evoke a revolution in immunotherapy for autoimmune diseases.
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Affiliation(s)
- Tingting Ding
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Rui Su
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Ruihe Wu
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Hongwei Xue
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yanyan Wang
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Ronghui Su
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Chong Gao
- Pathology, Joint Program in Transfusion Medicine, Brigham and Women's Hospital/Children's Hospital and Harvard Medical School, Boston, MA, United States
| | - Xiaofeng Li
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Caihong Wang
- Department of Rheumatology, The Second Hospital of Shanxi Medical University, Taiyuan, China
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Chen Y, Gaber T. Hypoxia/HIF Modulates Immune Responses. Biomedicines 2021; 9:biomedicines9030260. [PMID: 33808042 PMCID: PMC8000289 DOI: 10.3390/biomedicines9030260] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 02/07/2023] Open
Abstract
Oxygen availability varies throughout the human body in health and disease. Under physiological conditions, oxygen availability drops from the lungs over the blood stream towards the different tissues into the cells and the mitochondrial cavities leading to physiological low oxygen conditions or physiological hypoxia in all organs including primary lymphoid organs. Moreover, immune cells travel throughout the body searching for damaged cells and foreign antigens facing a variety of oxygen levels. Consequently, physiological hypoxia impacts immune cell function finally controlling innate and adaptive immune response mainly by transcriptional regulation via hypoxia-inducible factors (HIFs). Under pathophysiological conditions such as found in inflammation, injury, infection, ischemia and cancer, severe hypoxia can alter immune cells leading to dysfunctional immune response finally leading to tissue damage, cancer progression and autoimmunity. Here we summarize the effects of physiological and pathophysiological hypoxia on innate and adaptive immune activity, we provide an overview on the control of immune response by cellular hypoxia-induced pathways with focus on the role of HIFs and discuss the opportunity to target hypoxia-sensitive pathways for the treatment of cancer and autoimmunity.
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Affiliation(s)
- Yuling Chen
- Charité—Universitätsmedizin Berlin, Corporate Ember of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Charitéplatz 1, 10117 Berlin, Germany;
| | - Timo Gaber
- Charité—Universitätsmedizin Berlin, Corporate Ember of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Rheumatology and Clinical Immunology, Charitéplatz 1, 10117 Berlin, Germany;
- German Rheumatism Research Centre (DRFZ) Berlin, a Leibniz Institute, Charitéplatz 1, 10117 Berlin, Germany
- Correspondence: ; Tel.: +49-30-450-513364
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37
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Functional Role of B Cells in Atherosclerosis. Cells 2021; 10:cells10020270. [PMID: 33572939 PMCID: PMC7911276 DOI: 10.3390/cells10020270] [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: 01/08/2021] [Revised: 01/24/2021] [Accepted: 01/26/2021] [Indexed: 12/30/2022] Open
Abstract
Atherosclerosis is a lipid-driven inflammatory disease of blood vessels, and both innate and adaptive immune responses are involved in its development. The impact of B cells on atherosclerosis has been demonstrated in numerous studies and B cells have been found in close proximity to atherosclerotic plaques in humans and mice. B cells exert both atheroprotective and pro-atherogenic functions, which have been associated with their B cell subset attribution. While B1 cells and marginal zone B cells are considered to protect against atherosclerosis, follicular B cells and innate response activator B cells have been shown to promote atherosclerosis. In this review, we shed light on the role of B cells from a different, functional perspective and focus on the three major B cell functions: antibody production, antigen presentation/T cell interaction, and the release of cytokines. All of these functions have the potential to affect atherosclerosis by multiple ways and are dependent on the cellular milieu and the activation status of the B cell. Moreover, we discuss B cell receptor signaling and the mechanism of B cell activation under atherosclerosis-prone conditions. By summarizing current knowledge of B cells in and beyond atherosclerosis, we are pointing out open questions and enabling new perspectives.
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38
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Lammert C, Zhu C, Lian Y, Raman I, Eckert G, Li Q, Chalasani N. Exploratory Study of Autoantibody Profiling in Drug-Induced Liver Injury with an Autoimmune Phenotype. Hepatol Commun 2020; 4:1651-1663. [PMID: 33163835 PMCID: PMC7603536 DOI: 10.1002/hep4.1582] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/30/2020] [Accepted: 07/08/2020] [Indexed: 12/17/2022] Open
Abstract
Drug-induced liver injury (DILI) sometimes presents with an autoimmune hepatitis-like phenotype (AI-DILI), and it is challenging to distinguish it from de novo autoimmune hepatitis (AIH). We conducted a study to identify autoantibodies unique to AI-DILI by profiling serum autoantibodies. Autoantibodies were quantified using an autoantigen array containing 94 autoantigens from four groups: AI-DILI (n = 65), DILI controls (n = 67), de novo AIH (n = 17), and healthy controls (HCs; n = 30). In 37 patients with AI-DILI, samples were also collected 6 months after presentation. AI-DILI and de novo AIH had similar anti-neutrophil antibody and anti-smooth muscle antibody prevalence. Compared to HCs, de novo AIH had an increase in many immunoglobulin G (IgG; 35 [46.1%]) and IgM (51 [70%]) autoantibodies, whereas AI-DILI had an increase of IgM (40 [54.8%]) but not IgG autoantibodies. DILI controls had a similar IgG and IgM profile compared to HCs. Comparing de novo AIH to AI-DILI identified 18 (23.7%) elevated IgG but only one (1.4%) IgM autoantibodies, indicating the unique IgG autoantibody profile in de novo AIH. Compared to DILI and HCs, increased IgM autoantibodies in AI-DILI and de novo AIH were common; however, AI-DILI induced by different drugs showed different frequencies of IgM autoantibodies, with nitrofurantoin-related AI-DILI showing a higher number of increased IgM autoantibodies. AI-DILI autoantibody levels at diagnosis and at 6 months showed a significant decline in 37 IgM autoantibodies. A model with highly correlated IgG and IgM was fitted into multivariate logistic regression and revealed an area under the curve of 0.87 (95% confidence interval, 0.79-0.95) to distinguish de novo AIH from AI-DILI. Conclusion: The unique IgG and IgM autoantibody signature appears to be a promising biomarker for distinguishing AI-DILI from de novo AIH.
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Affiliation(s)
- Craig Lammert
- Department of MedicineIndiana University School of MedicineIndianapolisINUSA
| | - Chengsong Zhu
- Department of Immunology and Internal MedicineGenomics and Microarray CoreUniversity of Texas SouthwesternDallasTXUSA
| | - Yun Lian
- Department of Immunology and Internal MedicineGenomics and Microarray CoreUniversity of Texas SouthwesternDallasTXUSA
| | - Indu Raman
- Department of Immunology and Internal MedicineGenomics and Microarray CoreUniversity of Texas SouthwesternDallasTXUSA
| | - George Eckert
- Department of MedicineIndiana University School of MedicineIndianapolisINUSA
| | - Quan‐Zhen Li
- Department of Immunology and Internal MedicineGenomics and Microarray CoreUniversity of Texas SouthwesternDallasTXUSA
| | - Naga Chalasani
- Department of MedicineIndiana University School of MedicineIndianapolisINUSA
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39
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Antigen presentation, autoantibody production, and therapeutic targets in autoimmune liver disease. Cell Mol Immunol 2020; 18:92-111. [PMID: 33110250 PMCID: PMC7852534 DOI: 10.1038/s41423-020-00568-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023] Open
Abstract
The liver is an important immunological organ that controls systemic tolerance. The liver harbors professional and unconventional antigen-presenting cells that are crucial for tolerance induction and maintenance. Orchestrating the immune response in homeostasis depends on a healthy and well-toned immunological liver microenvironment, which is maintained by the crosstalk of liver-resident antigen-presenting cells and intrahepatic and liver-infiltrating leukocytes. In response to pathogens or autoantigens, tolerance is disrupted by unknown mechanisms. Intrahepatic parenchymal and nonparenchymal cells exhibit unique antigen-presenting properties. The presentation of microbial and endogenous lipid-, metabolite- and peptide-derived antigens from the gut via conventional and nonconventional mechanisms can educate intrahepatic immune cells and elicit effector responses or tolerance. Perturbation of this balance results in autoimmune liver diseases, such as autoimmune hepatitis, primary biliary cholangitis, and primary sclerosing cholangitis. Although the exact etiologies of these autoimmune liver diseases are unknown, it is thought that the disruption of tolerance towards self-antigens and microbial metabolites and lipids, as well as alterations in bile acid composition, may result in changes in effector cell activation and polarization and may reduce or impair protective anti-inflammatory regulatory T and B cell responses. Additionally, the canonical and noncanonical transmission of antigens and antigen:MHC complexes via trogocytosis or extracellular vesicles between different (non) immune cells in the liver may play a role in the induction of hepatic inflammation and tolerance. Here, we summarize emerging aspects of antigen presentation, autoantibody production, and the application of novel therapeutic approaches in the characterization and treatment of autoimmune liver diseases.
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40
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Liu SP, Bian ZH, Zhao ZB, Wang J, Zhang W, Leung PSC, Li L, Lian ZX. Animal Models of Autoimmune Liver Diseases: a Comprehensive Review. Clin Rev Allergy Immunol 2020; 58:252-271. [PMID: 32076943 DOI: 10.1007/s12016-020-08778-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Autoimmune liver diseases (AILDs) are potentially life-threatening chronic liver diseases which include autoimmune hepatitis, primary biliary cholangitis, primary sclerosing cholangitis, and recently characterized IgG4-related sclerosing cholangitis. They are caused by immune attack on hepatocytes or bile ducts, with different mechanisms and clinical manifestations. The etiologies of AILDs include a susceptible genetic background, environment insults, infections, and changes of commensal microbiota, but remain complicated. Understanding of the underlying mechanisms of AILDs is mandatory for early diagnosis and intervention, which is of great importance for better prognosis. Thus, animal models are developed to mimic the pathogenesis, find biomarkers for early diagnosis, and for therapeutic attempts of AILDs. However, no animal models can fully recapitulate features of certain AILD, especially the late stages of diseases. Certain limitations include different living condition, cell composition, and time frame of disease development and resolution. Moreover, there is no IgG4 in rodents which exists in human. Nevertheless, the understanding and therapy of AILDs have been greatly advanced by the development and mechanistic investigation of animal models. This review will provide a comprehensive overview of traditional and new animal models that recapitulate different features and etiologies of distinct AILDs.
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Affiliation(s)
- Shou-Pei Liu
- Department of General Surgery, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, Guangdong, China.,Chronic Disease Laboratory, Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Zhen-Hua Bian
- Department of General Surgery, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, Guangdong, China.,Chronic Disease Laboratory, Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, 510006, China.,School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, Guangdong, China
| | - Zhi-Bin Zhao
- Department of General Surgery, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, Guangdong, China.,Chronic Disease Laboratory, Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, 510006, China
| | - Jinjun Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, Jiangsu, China
| | - Weici Zhang
- Division of Rheumatology/Allergy and Clinical Immunology, University of California, Davis, CA, 95616, USA
| | - Patrick S C Leung
- Division of Rheumatology/Allergy and Clinical Immunology, University of California, Davis, CA, 95616, USA
| | - Liang Li
- Department of General Surgery, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, Guangdong, China. .,Chronic Disease Laboratory, Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, 510006, China.
| | - Zhe-Xiong Lian
- Department of General Surgery, Guangzhou Digestive Disease Center, Guangzhou First People's Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, Guangdong, China. .,Chronic Disease Laboratory, Institutes for Life Sciences and School of Medicine, South China University of Technology, Guangzhou, 510006, China.
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41
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The Role of HIF in Immunity and Inflammation. Cell Metab 2020; 32:524-536. [PMID: 32853548 DOI: 10.1016/j.cmet.2020.08.002] [Citation(s) in RCA: 297] [Impact Index Per Article: 74.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/07/2020] [Accepted: 08/05/2020] [Indexed: 12/19/2022]
Abstract
HIF is a transcription factor that plays an essential role in the cellular response to low oxygen, orchestrating a metabolic switch that allows cells to survive in this environment. In immunity, infected and inflamed tissues are often hypoxic, and HIF helps immune cells adapt. HIF-α stabilization can also occur under normoxia during immunity and inflammation, where it regulates metabolism but in addition can directly regulate expression of immune genes. Here we review the role of HIF in immunity, including its role in macrophages, dendritic cells, neutrophils, T cells, and B cells. Its role in immunity is as essential for cellular responses as it is in its original role in hypoxia, with HIF being implicated in multiple inflammatory diseases and in immunosuppression in tumors.
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42
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Wang L, Fu Y, Yu B, Jiang X, Liu H, Liu J, Zha B, Chu Y. HSP70, a Novel Regulatory Molecule in B Cell-Mediated Suppression of Autoimmune Diseases. J Mol Biol 2020; 433:166634. [PMID: 32860772 DOI: 10.1016/j.jmb.2020.08.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 08/12/2020] [Accepted: 08/21/2020] [Indexed: 12/12/2022]
Abstract
B cells have recently emerged as playing regulatory role in autoimmune diseases. We have previously demonstrated that human peripheral blood CD19+CD24hiCD27+ B cells have regulatory function both in healthy donors and in patients with autoimmune disease. However, the mechanism of this regulation is still not fully understood. In this study, microarrays were utilized to compare gene expression of CD19+CD24hiCD27+ B cells (regulatory B cells, Bregs) with CD19+CD24loCD27- B cells (non-Bregs) in human peripheral blood. We found that heat shock protein 70 (HSP70) expression was significantly upregulated in Bregs. In vitro studies explored that HSP70 inhibition impaired the regulatory function of peripheral blood Bregs. In mouse models of autoimmune disease, using HSP70-deficient mice or HSP70 inhibitors, Bregs suppressed effector cells and rescued disease-associated phenotypes that were dependent on HSP70. Mechanistically, Bregs secreted HSP70, directly suppressing effector cells, such as T effect cells. These findings reveal that HSP70 is a novel factor that modulates Breg function and suggest that enhancing Breg-mediated production of HSP70 could be a viable therapy for autoimmune disease.
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Affiliation(s)
- Luman Wang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China; Department of Endocrinology and Metabolism, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China; Biotherapy Research Center, Fudan University, Shanghai 200032, China
| | - Ying Fu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Baichao Yu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Xuechao Jiang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Hongchun Liu
- Department of Gastroenterology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jun Liu
- Department of Endocrinology and Metabolism, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China
| | - Bingbing Zha
- Department of Endocrinology and Metabolism, Shanghai Fifth People's Hospital, Fudan University, Shanghai, China.
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China; Biotherapy Research Center, Fudan University, Shanghai 200032, China.
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43
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Inaba A, Tuong ZK, Riding AM, Mathews RJ, Martin JL, Saeb-Parsy K, Clatworthy MR. B Lymphocyte-Derived CCL7 Augments Neutrophil and Monocyte Recruitment, Exacerbating Acute Kidney Injury. THE JOURNAL OF IMMUNOLOGY 2020; 205:1376-1384. [PMID: 32737150 PMCID: PMC7444279 DOI: 10.4049/jimmunol.2000454] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 07/01/2020] [Indexed: 12/21/2022]
Abstract
AKI is a serious condition affecting one fifth of hospital patients. In AKI, B cells produce CCL7 and facilitate neutrophil and monocyte recruitment. CCL7 blockade in mice reduces myeloid cell infiltration and ameliorates AKI.
Acute kidney injury (AKI) is a serious condition affecting one fifth of hospital inpatients. B lymphocytes have immunological functions beyond Ab production and may produce cytokines and chemokines that modulate inflammation. In this study, we investigated leukocyte responses in a mouse model of AKI and observed an increase in circulating and kidney B cells, particularly a B220low subset, following AKI. We found that B cells produce the chemokine CCL7, with the potential to facilitate neutrophil and monocyte recruitment to the injured kidney. Siglec-G–deficient mice, which have increased numbers of B220low innate B cells and a lower B cell activation threshold, had increased Ccl7 transcripts, increased neutrophil and monocyte numbers in the kidney, and more severe AKI. CCL7 blockade in mice reduced myeloid cell infiltration into the kidney and ameliorated AKI. In two independent cohorts of human patients with AKI, we observed significantly higher CCL7 transcripts compared with controls, and in a third cohort, we observed an increase in urinary CCL7 levels in AKI, supporting the clinical importance of this pathway. Together, our data suggest that B cells contribute to early sterile inflammation in AKI via the production of leukocyte-recruiting chemokines.
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Affiliation(s)
- Akimichi Inaba
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge CB2 0QH, United Kingdom; .,Cambridge University Hospitals National Health Service Foundation Trust, Cambridge CB2 0QQ, United Kingdom
| | - Zewen K Tuong
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge CB2 0QH, United Kingdom.,Cellular Genetics, Wellcome Trust Sanger Institute, Hinxton CB10 1RQ, United Kingdom
| | - Alexandra M Riding
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge CB2 0QH, United Kingdom
| | - Rebeccah J Mathews
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge CB2 0QH, United Kingdom
| | - Jack L Martin
- Cambridge University Hospitals National Health Service Foundation Trust, Cambridge CB2 0QQ, United Kingdom.,Department of Surgery, University of Cambridge, Cambridge CB2 0QQ, United Kingdom; and
| | - Kourosh Saeb-Parsy
- Department of Surgery, University of Cambridge, Cambridge CB2 0QQ, United Kingdom; and.,National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 0QQ, United Kingdom
| | - Menna R Clatworthy
- Molecular Immunity Unit, Department of Medicine, University of Cambridge, Cambridge CB2 0QH, United Kingdom.,Cambridge University Hospitals National Health Service Foundation Trust, Cambridge CB2 0QQ, United Kingdom.,Cellular Genetics, Wellcome Trust Sanger Institute, Hinxton CB10 1RQ, United Kingdom.,National Institute for Health Research Cambridge Biomedical Research Centre, Cambridge CB2 0QQ, United Kingdom
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44
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Huo JH, Wang XY, Gong L, Gu X. Role of regulatory B cells in autoimmune diseases of the digestive system. Shijie Huaren Xiaohua Zazhi 2020; 28:486-492. [DOI: 10.11569/wcjd.v28.i12.486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Recently, regulatory B cells (Breg), a subset of functional B cells, have been reported to participate in the negative regulation of immunity in autoimmune diseases by producing interleukin (IL)-10, IL-35, and transforming growth factor-β. However, a specific surface marker for Breg has not been identified and their potential therapeutic role requires further study. This review discusses the function of Breg in autoimmune diseases of the digestive system, with the purpose of highlighting their regulation of immune responses and their potential as a therapeutic target for the treatment of these diseases.
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Affiliation(s)
- Jia-Hui Huo
- Department of Gastroenterology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi 214000, Jiangsu Province, China
| | - Xiao-Yun Wang
- Department of Gastroenterology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi 214000, Jiangsu Province, China
| | - Lei Gong
- Department of Gastroenterology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi 214000, Jiangsu Province, China
| | - Xin Gu
- Department of Gastroenterology, The Affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi 214000, Jiangsu Province, China
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Liang M, Liwen Z, Juan D, Yun Z, Yanbo D, Jianping C. Dysregulated TFR and TFH cells correlate with B-cell differentiation and antibody production in autoimmune hepatitis. J Cell Mol Med 2020; 24:3948-3957. [PMID: 32142205 PMCID: PMC7171413 DOI: 10.1111/jcmm.14997] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 10/14/2019] [Accepted: 11/22/2019] [Indexed: 12/12/2022] Open
Abstract
Follicular helper T (TFH) cell provides germinal centre (GC) B cell with critical signals for autoantibody production in the immunopathogenesis and progression of autoimmune hepatitis (AIH). However, the immunoregulatory functions of follicular regulatory T (TFR) cell in AIH are still unclear. The numbers of circulating TFR/TFH cells were measured in AIH patients. Moreover, we established experimental autoimmune hepatitis (EAH) model to examine the function of TFR cells on B‐cell differentiation and autoantibody production in vivo and vitro. AIH patients had significantly increased numbers of TFH cells and decreased numbers of TFR cells as well as imbalanced TFR/TFH‐type cytokines (IL‐10, TGF‐β1 and IL‐21) compared with healthy controls (HCs). In addition, TFR cell numbers negatively correlated with TFH cell numbers. Also, serum hypergammaglobulinaemia (IgG and IgM) concentration negatively correlated the levels of serum IL‐21, but positively correlated with the levels of serum IL‐10 in AIH patients. Furthermore, in comparison with control group, significantly higher frequencies of spleen TFR cells but lower frequencies of spleen TFH cells were detected in the EAH group. Further analysis found that TFR cells simultaneously express the phenotypic characteristics of Treg and TFH cells, but exercise as negative regulators of autoantibody production in vitro culture. Our findings demonstrated that dysregulated between TFR and TFH cells might cause excessive production of autoantibodies and destruction of the immune homeostasis, leading to the immunopathological process in AIH.
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Affiliation(s)
- Ma Liang
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhang Liwen
- Department of Pediatrics, The Second People's Hospital of Changzhou, Affiliate Hospital of NanJing medical University, Changzhou, China
| | - Dai Juan
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Zhuang Yun
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Ding Yanbo
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
| | - Chen Jianping
- Department of Gastroenterology, The First People's Hospital of Changzhou, The Third Affiliated Hospital of Soochow University, Changzhou, China
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Bednarczyk M, Stege H, Grabbe S, Bros M. β2 Integrins-Multi-Functional Leukocyte Receptors in Health and Disease. Int J Mol Sci 2020; 21:E1402. [PMID: 32092981 PMCID: PMC7073085 DOI: 10.3390/ijms21041402] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 12/25/2022] Open
Abstract
β2 integrins are heterodimeric surface receptors composed of a variable α (CD11a-CD11d) and a constant β (CD18) subunit and are specifically expressed by leukocytes. The α subunit defines the individual functional properties of the corresponding β2 integrin, but all β2 integrins show functional overlap. They mediate adhesion to other cells and to components of the extracellular matrix (ECM), orchestrate uptake of extracellular material like complement-opsonized pathogens, control cytoskeletal organization, and modulate cell signaling. This review aims to delineate the tremendous role of β2 integrins for immune functions as exemplified by the phenotype of LAD-I (leukocyte adhesion deficiency 1) patients that suffer from strong recurrent infections. These immune defects have been largely attributed to impaired migratory and phagocytic properties of polymorphonuclear granulocytes. The molecular base for this inherited disease is a functional impairment of β2 integrins due to mutations within the CD18 gene. LAD-I patients are also predisposed for autoimmune diseases. In agreement, polymorphisms within the CD11b gene have been associated with autoimmunity. Consequently, β2 integrins have received growing interest as targets in the treatment of autoimmune diseases. Moreover, β2 integrin activity on leukocytes has been implicated in tumor development.
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Affiliation(s)
| | | | | | - Matthias Bros
- Department of Dermatology, University Medical Center Mainz, Langenbeckstraße 1, 55131 Mainz, Germany; (M.B.); (H.S.); (S.G.)
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Abstract
B cells are typically characterized by their ability to produce antibodies, function as secondary antigen-present cells, and produce various immunoregulatory cytokines. The regulatory B (Breg)-cell population is now widely accepted as an important modulatory component of the immune system that suppresses inflammation. Recent studies indicate that Breg-cell populations are small under physiological conditions but expand substantially in both human patients and murine models of chronic inflammatory diseases, autoimmune diseases, infection, transplantation, and cancer. Almost all B-cell subsets can be induced to form Breg cells. In addition, there are unique Breg-cell subsets such as B10 and Tim-1+ B cells. Immunoregulatory function may be mediated by production of cytokines such as IL-10 and TGF-β and ensuing suppression of T cells, by direct cell-cell interactions, and (or) by altering the immune microenvironment. In this chapter, we describe in detail the discovery of Breg cells, their phenotypes, differentiation, function, contributions to disease, and therapeutic potential.
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Affiliation(s)
- Luman Wang
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, No. 138, Yi Xue Yuan Rd, 226, Shanghai, 200032, China
| | - Ying Fu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, No. 138, Yi Xue Yuan Rd, 226, Shanghai, 200032, China
| | - Yiwei Chu
- Department of Immunology, School of Basic Medical Sciences, and Institutes of Biomedical Sciences, Fudan University, No. 138, Yi Xue Yuan Rd, 226, Shanghai, 200032, China.
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48
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Ma K, Du W, Wang X, Yuan S, Cai X, Liu D, Li J, Lu L. Multiple Functions of B Cells in the Pathogenesis of Systemic Lupus Erythematosus. Int J Mol Sci 2019; 20:E6021. [PMID: 31795353 PMCID: PMC6929160 DOI: 10.3390/ijms20236021] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 12/15/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease characterized by excessive autoantibody production and multi-organ involvement. Although the etiology of SLE still remains unclear, recent studies have characterized several pathogenic B cell subsets and regulatory B cell subsets involved in the pathogenesis of SLE. Among pathogenic B cell subsets, age-associated B cells (ABCs) are a newly identified subset of autoreactive B cells with T-bet-dependent transcriptional programs and unique functional features in SLE. Accumulation of T-bet+ CD11c+ ABCs has been observed in SLE patients and lupus mouse models. In addition, innate-like B cells with the autoreactive B cell receptor (BCR) expression and long-lived plasma cells with persistent autoantibody production contribute to the development of SLE. Moreover, several regulatory B cell subsets with immune suppressive functions have been identified, while the impaired inhibitory effects of regulatory B cells have been indicated in SLE. Thus, further elucidation on the functional features of B cell subsets will provide new insights in understanding lupus pathogenesis and lead to novel therapeutic interventions in the treatment of SLE.
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Affiliation(s)
- Kongyang Ma
- Department of Rheumatology and Immunology, Second Clinical Medical College of Jinan University, Shenzhen People’s Hospital, Shenzhen 518000, China; (K.M.); (D.L.)
- Department of Pathology and Shenzhen Institute of Research and Innovation, The University of Hong Kong, Hong Kong 999077, China; (W.D.); (X.W.)
| | - Wenhan Du
- Department of Pathology and Shenzhen Institute of Research and Innovation, The University of Hong Kong, Hong Kong 999077, China; (W.D.); (X.W.)
| | - Xiaohui Wang
- Department of Pathology and Shenzhen Institute of Research and Innovation, The University of Hong Kong, Hong Kong 999077, China; (W.D.); (X.W.)
| | - Shiwen Yuan
- Department of Rheumatology, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, 510000, China; (S.Y.); (X.C.)
| | - Xiaoyan Cai
- Department of Rheumatology, Guangzhou First People’s Hospital, School of Medicine, South China University of Technology, Guangzhou, 510000, China; (S.Y.); (X.C.)
| | - Dongzhou Liu
- Department of Rheumatology and Immunology, Second Clinical Medical College of Jinan University, Shenzhen People’s Hospital, Shenzhen 518000, China; (K.M.); (D.L.)
| | - Jingyi Li
- Department of Rheumatology and Immunology, Southwest Hospital, The First Hospital Affiliated to The Army Medical University, Chongqing 400038, China
| | - Liwei Lu
- Department of Pathology and Shenzhen Institute of Research and Innovation, The University of Hong Kong, Hong Kong 999077, China; (W.D.); (X.W.)
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Abstract
Autoreactive B cells can promote autoimmunity through antigen presentation to autoreactive T cells, production of autoantibodies, generation of cytokines promoting T cell activation and differentiation, and inhibition of regulatory T cells and B cells. Here, the authors highlight studies pertaining to B cell mechanisms associated with disease pathogenesis and outcomes in autoimmune hepatitis and the immune-mediated cholangiopathies (primary biliary cholangitis, primary sclerosing cholangitis, and biliary atresia). The vast majority of investigations focus on autoantibodies and future research endeavors should include deciphering the role of the B cell in T cell activation (through antigen presentation, cytokine/chemokine production, and inhibition of regulation). Targeting B cell mechanisms in the treatment of autoimmune liver diseases is also highlighted.
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Affiliation(s)
- Sarah A. Taylor
- Division of Pediatric Gastroenterology, Hepatology and Nutrition, Ann & Robert H. Lurie Children’s Hospital of Chicago, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - David N. Assis
- Section of Digestive Diseases, Department of Medicine, Yale University School of Medicine, New Haven, Connecticut
| | - Cara L. Mack
- Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Digestive Health Institute, Children’s Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado
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Francis WR, Ireland RE, Spear AM, Jenner D, Watts SA, Kirkman E, Pallister I. Flow Cytometric Analysis of Hematopoietic Populations in Rat Bone Marrow. Impact of Trauma and Hemorrhagic Shock. Cytometry A 2019; 95:1167-1177. [PMID: 31595661 PMCID: PMC6900111 DOI: 10.1002/cyto.a.23903] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 08/19/2019] [Accepted: 09/13/2019] [Indexed: 12/20/2022]
Abstract
Severe injury and hemorrhagic shock (HS) result in multiple changes to hematopoietic differentiation, which contribute to the development of immunosuppression and multiple organ failure (MOF). Understanding the changes that take place during the acute injury phase may help predict which patients will develop MOF and provide potential targets for therapy. Obtaining bone marrow from humans during the acute injury phase is difficult so published data are largely derived from peripheral blood samples, which infer bone marrow changes that reflect the sustained inflammatory response. This preliminary and opportunistic study investigated leucopoietic changes in rat bone marrow 6 h following traumatic injury and HS. Terminally anesthetized male Porton Wistar rats were allocated randomly to receive a sham operation (cannulation with no injury) or femoral fracture and HS. Bone marrow cells were flushed from rat femurs and immunophenotypically stained with specific antibody panels for lymphoid (CD45R, CD127, CD90, and IgM) or myeloid (CD11b, CD45, and RP-1) lineages. Subsequently, cell populations were fluorescence-activated cell sorted for morphological assessment. Stage-specific cell populations were identified using a limited number of antibodies, and leucopoietic changes were determined 6 h following trauma and HS. Myeloid subpopulations could be identified by varying levels CD11b expression, CD45, and RP-1. Trauma and HS resulted in a significant reduction in total CD11b + myeloid cells including both immature (RP-1(-)) and mature (RP-1+) granulocytes. Multiple B-cell lymphoid subsets were identified. The total percentage of CD90+ subsets remained unchanged following trauma and HS, but there was a reduction in the numbers of maturing CD90(-) cells suggesting movement into the periphery. © 2019 The Authors. Cytometry Part A published by Wiley Periodicals, Inc. on behalf of International Society for Advancement of Cytometry.
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Affiliation(s)
| | - Rachel E Ireland
- Defence Science and Technology Laboratory, Porton Down, England, UK
| | - Abigail M Spear
- Defence Science and Technology Laboratory, Porton Down, England, UK
| | - Dominic Jenner
- Defence Science and Technology Laboratory, Porton Down, England, UK
| | - Sarah A Watts
- Defence Science and Technology Laboratory, Porton Down, England, UK
| | - Emrys Kirkman
- Defence Science and Technology Laboratory, Porton Down, England, UK
| | - Ian Pallister
- Institute of Life Science, Swansea University, Wales, UK.,Department of Trauma & Orthopaedics, Morriston Hospital, Swansea, Wales, UK
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