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Jiang P, Jing Y, Zhao S, Lan C, Yang L, Dai X, Luo L, Cai S, Zhu Y, Miller H, Lai J, Zhang X, Zhao X, Wu Y, Yang J, Zhang W, Guan F, Zhong B, Umehara H, Lei J, Dong L, Liu C. Expression of USP25 associates with fibrosis, inflammation and metabolism changes in IgG4-related disease. Nat Commun 2024; 15:2627. [PMID: 38521787 PMCID: PMC10960850 DOI: 10.1038/s41467-024-45977-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 02/08/2024] [Indexed: 03/25/2024] Open
Abstract
IgG4-related disease (IgG4-RD) has complex clinical manifestations ranging from fibrosis and inflammation to deregulated metabolism. The molecular mechanisms underpinning these phenotypes are unclear. In this study, by using IgG4-RD patient peripheral blood mononuclear cells (PBMCs), IgG4-RD cell lines and Usp25 knockout mice, we show that ubiquitin-specific protease 25 (USP25) engages in multiple pathways to regulate fibrotic and inflammatory pathways that are characteristic to IgG4-RD. Reduced USP25 expression in IgG4-RD leads to increased SMAD3 activation, which contributes to fibrosis and induces inflammation through the IL-1β inflammatory axis. Mechanistically, USP25 prevents ubiquitination of RAC1, thus, downregulation of USP25 leads to ubiquitination and degradation of RAC1. Decreased RAC1 levels result in reduced aldolase A release from the actin cytoskeleton, which then lowers glycolysis. The expression of LYN, a component of the B cell receptor signalosome is also reduced in USP25-deficient B cells, which might result in B cell activation deficiency. Altogether, our results indicate a potential anti-inflammatory and anti-fibrotic role for USP25 and make USP25 a promising diagnostic marker and potential therapeutic target in IgG4-RD.
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Affiliation(s)
- Panpan Jiang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Yukai Jing
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Siyu Zhao
- Department Immunology, School of Medicine, Yangtze University, Jingzhou, 434000, China
| | - Caini Lan
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Lu Yang
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Xin Dai
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Li Luo
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Shaozhe Cai
- Department of Rheumatology and Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430000, China
| | - Yingzi Zhu
- Department of Rheumatology and Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430000, China
| | - Heather Miller
- Cytek Biosciences, R&D Clinical Reagents, Fremont, CA, USA
| | - Juan Lai
- GeneMind Biosciences Company Limited, Shenzhen, 518001, China
| | - Xin Zhang
- GeneMind Biosciences Company Limited, Shenzhen, 518001, China
| | - Xiaochao Zhao
- GeneMind Biosciences Company Limited, Shenzhen, 518001, China
| | - Yonggui Wu
- Department of Nephropathy, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, PR China; Center for Scientific Research of Anhui Medical University, Hefei, Anhui, 230032, PR China
| | - Jingzhi Yang
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, 250063, PR China
| | - Wen Zhang
- Department of Rheumatology, Peking Union Medical College Hospital, Chinese Academy of Medical Science & Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases, State Key Laboratory of Complex Severe and Rare Diseases, Beijing, 100730, China
| | - Fei Guan
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Bo Zhong
- Department of Gastrointestinal Surgery, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, 430071, China
| | - Hisanori Umehara
- Department of Medicine, Nagahama City Hospital, Nagahama, 949-1701, Japan
| | - Jiahui Lei
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Lingli Dong
- Department of Rheumatology and Immunology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430000, China.
| | - Chaohong Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
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李 琳, 刘 海, 王 立. [Research advances on B-cell activating factor and its targeted agents in inflammatory bowel disease]. Zhongguo Dang Dai Er Ke Za Zhi 2024; 26:315-320. [PMID: 38557386 PMCID: PMC10986372 DOI: 10.7499/j.issn.1008-8830.2309126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/29/2024] [Indexed: 04/04/2024]
Abstract
B-cell activating factor (BAFF), a critical regulator of B cells, is involved in various autoimmune diseases. Inflammatory bowel disease (IBD) is a group of chronic and recurrent intestinal inflammatory disorders with unclear etiology, and its global incidence has been increasing in recent years. Abnormal immune responses triggered by multiple factors are closely related to the pathogenesis of IBD. Previous studies have confirmed the association of B-cell abnormal activation and increased production of autoantibodies with the development of ulcerative colitis. However, the involvement of BAFF in the mechanisms of IBD remains unclear. This review summarizes the potential role of BAFF in the pathogenesis of IBD and provides an overview of targeted therapies on BAFF in IBD, aiming to contribute insights for targeted treatments of IBD.
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Guzel HG, Yilmaz VT, Koksoy S, Kocak H, Kisaoglu A, Soylu M, Akkaya B, Demiryilmaz I, Aydinli B, Suleymanlar G. Regulatory B Cells Profile in Kidney Transplant Recipients With Chronic-Active Antibody-Mediated Rejection. Transplant Proc 2023:S0041-1345(23)00153-7. [PMID: 37061353 DOI: 10.1016/j.transproceed.2023.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 01/09/2023] [Accepted: 03/14/2023] [Indexed: 04/17/2023]
Abstract
This study aims to reveal the relationship between regulatory B cell (Breg) subsets and chronic-active antibody-mediated rejection (c-aABMR) in renal transplant recipients. Our study involved 3 groups of participants: renal transplant recipients with biopsy-proven c-aABMR as the chronic rejection group (c-aABMR, n = 23), recipients with stable graft functions as the patient control group (PC; n = 11), and healthy volunteers (HV; n = 11). Breg subsets, immature/transitional B cells, plasmablastic cells, B10 cells, and BR1 cells were isolated from venous blood samples by flow cytometry. The median values of Breg frequencies in the total lymphocyte population were analyzed. There were no significant differences between the study groups for immature and/or transitional B cell frequencies. Plasmablastic cell frequencies of the c-aABMR group (7.80 [2.10-27.40]) and the PC group (6.00 [1.80-55.50]) were similar, but both of these values were significantly higher than the HVs' (3.40 [1.20-8.50]), (respectively, P = .005 and P = .039). B10 cell frequencies were also similar, comparing the c-aABMR (4.20 [0.10-7.40]) and the PC groups (4.10 [0.10-5.90]), whereas the HVs (5.90 [2.90-8.50]) had the highest B10 cell frequency with an only statistical significance against the PC group (respectively, P = .09 and P = .028). The c-aABMR and the PC groups were similar regarding BR1 cell frequencies. However, the HV group significantly had the highest frequency of BR1 cells (5.50 [2.80-10.80]) than the other groups (P < .001 for both). We demonstrated that frequencies of B10 and BR1 cells were higher in HVs than in transplant recipients, regardless of rejection state. However, there was no significant relation between Breg frequencies and the c-aABMR state.
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Affiliation(s)
- Halil Goksel Guzel
- Department of Internal Medicine, Akdeniz University School of Medicine, Antalya, Turkey
| | - Vural Taner Yilmaz
- Department of Internal Medicine, Division of Nephrology, Akdeniz University School of Medicine, Antalya, Turkey.
| | - Sadi Koksoy
- Department of Microbiology, Division of Immunology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Huseyin Kocak
- Department of Internal Medicine, Division of Nephrology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Abdullah Kisaoglu
- Department of General Surgery, Akdeniz University School of Medicine, Antalya, Turkey
| | - Mehmet Soylu
- Department of Microbiology, Division of Immunology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Bahar Akkaya
- Department of Pathology, Akdeniz University School of Medicine, Antalya, Turkey
| | - Ismail Demiryilmaz
- Department of General Surgery, Akdeniz University School of Medicine, Antalya, Turkey
| | - Bülent Aydinli
- Department of General Surgery, Akdeniz University School of Medicine, Antalya, Turkey
| | - Gultekin Suleymanlar
- Department of Internal Medicine, Division of Nephrology, Akdeniz University School of Medicine, Antalya, Turkey
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Block V, Sevdali E, Recher M, Abolhassani H, Hammarstrom L, Smulski CR, Baronio M, Plebani A, Proietti M, Speletas M, Warnatz K, Voll RE, Lougaris V, Schneider P, Eibel H. CVID-Associated B Cell Activating Factor Receptor Variants Change Receptor Oligomerization, Ligand Binding, and Signaling Responses. J Clin Immunol 2023; 43:391-405. [PMID: 36308663 PMCID: PMC9616699 DOI: 10.1007/s10875-022-01378-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 09/23/2022] [Indexed: 02/07/2023]
Abstract
PURPOSE Binding of the B cell activating factor (BAFF) to its receptor (BAFFR) activates in mature B cells many essential pro-survival functions. Null mutations in the BAFFR gene result in complete BAFFR deficiency and cause a block in B cell development at the transition from immature to mature B cells leading therefore to B lymphopenia and hypogammaglobulinemia. In addition to complete BAFFR deficiency, single nucleotide variants encoding BAFFR missense mutations were found in patients suffering from common variable immunodeficiency (CVID), autoimmunity, or B cell lymphomas. As it remained unclear to which extent such variants disturb the activity of BAFFR, we performed genetic association studies and developed a cellular system that allows the unbiased analysis of BAFFR variants regarding oligomerization, signaling, and ectodomain shedding. METHODS In addition to genetic association studies, the BAFFR variants P21R, A52T, G64V, DUP92-95, P146S, and H159Y were expressed by lentiviral gene transfer in DG-75 Burkitt's lymphoma cells and analyzed for their impacts on BAFFR function. RESULTS Binding of BAFF to BAFFR was affected by P21R and A52T. Spontaneous oligomerization of BAFFR was disturbed by P21R, A52T, G64V, and P146S. BAFF-dependent activation of NF-κB2 was reduced by P21R and P146S, while interactions between BAFFR and the B cell antigen receptor component CD79B and AKT phosphorylation were impaired by P21R, A52T, G64V, and DUP92-95. P21R, G64V, and DUP92-95 interfered with phosphorylation of ERK1/2, while BAFF-induced shedding of the BAFFR ectodomain was only impaired by P21R. CONCLUSION Although all variants change BAFFR function and have the potential to contribute as modifiers to the development of primary antibody deficiencies, autoimmunity, and lymphoma, P21R is the only variant that was found to correlate positively with CVID.
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Affiliation(s)
- Violeta Block
- Department of Rheumatology and Clinical Immunology, Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medial Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Eirini Sevdali
- Department of Rheumatology and Clinical Immunology, Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medial Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Mike Recher
- Immunodeficiency Clinic and Laboratory, Medical Outpatient Unit and Department Biomedicine, University Hospital and University of Basel, Basel, Switzerland
| | - Hassan Abolhassani
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Lennart Hammarstrom
- Department of Biosciences and Nutrition, Karolinska Institutet, Huddinge, Sweden
| | - Cristian R Smulski
- Department of Rheumatology and Clinical Immunology, Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Medical Physics Department, Centro Atómico Bariloche, Comisión Nacional de Energía Atómica (CNEA), Consejo Nacional de Investigaciones Científicas Y Técnicas (CONICET), San Carlos de Bariloche, Río Negro, Argentina
| | - Manuela Baronio
- Department of Clinical and Exp. Sciences, University of Brescia, Brescia, Italy
| | - Alessandro Plebani
- Department of Clinical and Exp. Sciences, University of Brescia, Brescia, Italy
| | - Michele Proietti
- Center for Chronic Immunodeficiency, Medial Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Institute for Immunodeficiency, Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Matthaios Speletas
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Klaus Warnatz
- Department of Rheumatology and Clinical Immunology, Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medial Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Reinhard E Voll
- Department of Rheumatology and Clinical Immunology, Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Center for Chronic Immunodeficiency, Medial Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Vassilios Lougaris
- Department of Clinical and Exp. Sciences, University of Brescia, Brescia, Italy
| | - Pascal Schneider
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Hermann Eibel
- Department of Rheumatology and Clinical Immunology, Medical Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany.
- Center for Chronic Immunodeficiency, Medial Center and Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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Jiang Y, Chen A, Kline D, Liu Q, Ma J, Wang Y, Zhang T, Qian J, Nelson L, Prasadan K, Hu B, Gittes GK, Xiao X. Polarized macrophages promote gestational beta cell growth through extracellular signal-regulated kinase 5 signalling. Diabetes Obes Metab 2022; 24:1721-1733. [PMID: 35546452 DOI: 10.1111/dom.14744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 04/24/2022] [Accepted: 04/29/2022] [Indexed: 12/25/2022]
Abstract
AIM To show that depletion of pancreatic macrophages impairs gestational beta cell proliferation and leads to glucose intolerance. MATERIALS AND METHODS Genetic animal models were applied to study the effects of depletion of pancreatic macrophges on gestational beta-cell proliferaiton and glucose response. The crosstalk between macrophages and beta-cells was studied in vivo using beta-cell-specific extracellular-signal-regulated kinase 5 (ERK5) knockout and epidermal growth receptor (EGFR) knockout mice, and in vitro using a co-culture system. RESULTS Beta cell-derived placental growth factor (PlGF) recruited naïve macrophages and polarized them towards an M2-like phenotype. These macrophages then secreted epidermal growth factor (EGF), which activated extracellular signal-regulated kinase 5 (ERK5) signalling in beta cells to promote gestational beta cell proliferation. On the other hand, activation of ERK5 signalling in beta cells likely, in turn, enhanced the production and secretion of PlGF by beta cells. CONCLUSIONS Our study shows a regulatory loop between macrophages and beta cells through PlGF/EGF/ERK5 signalling cascades to regulate gestational beta cell growth.
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Affiliation(s)
- Yinan Jiang
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Apeng Chen
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, China
| | - Diana Kline
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Qun Liu
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jie Ma
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Yan Wang
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Ting Zhang
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Jieqi Qian
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Laura Nelson
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Krishna Prasadan
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Baoli Hu
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - George K Gittes
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Xiangwei Xiao
- Department of Surgery, Children's Hospital of Pittsburgh, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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Sevdali E, Block V, Lataretu M, Li H, Smulski CR, Briem JS, Heitz Y, Fischer B, Ramirez NJ, Grimbacher B, Jäck HM, Voll RE, Hölzer M, Schneider P, Eibel H. BAFFR activates PI3K/AKT signaling in human naive but not in switched memory B cells through direct interactions with B cell antigen receptors. Cell Rep 2022; 39:111019. [PMID: 35767961 DOI: 10.1016/j.celrep.2022.111019] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 04/27/2022] [Accepted: 06/08/2022] [Indexed: 12/28/2022] Open
Abstract
Binding of BAFF to BAFFR activates in mature B cells PI3K/AKT signaling regulating protein synthesis, metabolic fitness, and survival. In humans, naive and memory B cells express the same levels of BAFFR, but only memory B cells seem to survive without BAFF. Here, we show that BAFF activates PI3K/AKT only in naive B cells and changes the expression of genes regulating migration, proliferation, growth, and survival. BAFF-induced PI3K/AKT activation requires direct interactions between BAFFR and the B cell antigen receptor (BCR) components CD79A and CD79B and is enhanced by the AKT coactivator TCL1A. Compared to memory B cells, naive B cells express more surface BCRs, which interact better with BAFFR than IgG or IgA, thus allowing stronger responses to BAFF. As ablation of BAFFR in naive and memory B cells causes cell death independent of BAFF-induced signaling, BAFFR seems to act also as an intrinsic factor for B cell survival.
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Affiliation(s)
- Eirini Sevdali
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Violeta Block
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Marie Lataretu
- RNA Bioinformatics and High-Throughput Analysis, Faculty of Mathematics and Computer Science, University of Jena, Leutragraben 1, 07743 Jena, Germany
| | - Huiying Li
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Cristian R Smulski
- Medical Physics Department, Centro Atómico Bariloche, Comisión Nacional de Energía Atómica (CNEA), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Avenida E-Bustillo 9500, R8402AGP Río Negro, San Carlos de Bariloche, Argentina
| | - Jana-Susann Briem
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Yannic Heitz
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Beate Fischer
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Neftali-Jose Ramirez
- Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany; Institute for Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Bodo Grimbacher
- Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany; Institute for Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Hans-Martin Jäck
- Department of Medicine, Division of Immunology, University of Erlangen, Glückstraße 6, 91054 Erlangen, Germany
| | - Reinhard E Voll
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany
| | - Martin Hölzer
- Methodology and Research Infrastructure, MF1 Bioinformatics, Robert Koch Institute, Nordufer 20, 13353 Berlin, Germany
| | - Pascal Schneider
- Department of Biochemistry, University of Lausanne, Ch. des Boveresses 155, 1066 Epalinges, Switzerland
| | - Hermann Eibel
- Department of Rheumatology and Clinical Immunology, Medical Center - University of Freiburg, Hugstetterstr. 55, 79106 Freiburg, Germany; Faculty of Medicine, University of Freiburg, Breisacherstr. 153, 79110 Freiburg, Germany; Center for Chronic Immunodeficiency, Medical Center - University of Freiburg, Breisacherstr. 115, 79106 Freiburg, Germany.
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Boothby MR, Brookens SK, Raybuck AL, Cho SH. Supplying the trip to antibody production-nutrients, signaling, and the programming of cellular metabolism in the mature B lineage. Cell Mol Immunol 2022; 19:352-369. [PMID: 34782762 PMCID: PMC8591438 DOI: 10.1038/s41423-021-00782-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 09/16/2021] [Indexed: 12/26/2022] Open
Abstract
The COVID pandemic has refreshed and expanded recognition of the vital role that sustained antibody (Ab) secretion plays in our immune defenses against microbes and of the importance of vaccines that elicit Ab protection against infection. With this backdrop, it is especially timely to review aspects of the molecular programming that govern how the cells that secrete Abs arise, persist, and meet the challenge of secreting vast amounts of these glycoproteins. Whereas plasmablasts and plasma cells (PCs) are the primary sources of secreted Abs, the process leading to the existence of these cell types starts with naive B lymphocytes that proliferate and differentiate toward several potential fates. At each step, cells reside in specific microenvironments in which they not only receive signals from cytokines and other cell surface receptors but also draw on the interstitium for nutrients. Nutrients in turn influence flux through intermediary metabolism and sensor enzymes that regulate gene transcription, translation, and metabolism. This review will focus on nutrient supply and how sensor mechanisms influence distinct cellular stages that lead to PCs and their adaptations as factories dedicated to Ab secretion. Salient findings of this group and others, sometimes exhibiting differences, will be summarized with regard to the journey to a distinctive metabolic program in PCs.
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Affiliation(s)
- Mark R Boothby
- Department of Pathology, Microbiology & Immunology, Molecular Pathogenesis Division, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
- Department of Medicine, Rheumatology & Immunology Division, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
- Cancer Biology Program, Vanderbilt University, Nashville, TN, 37232, USA.
- Vanderbilt Institute of Infection, Inflammation, and Immunology, Nashville, TN, 37232, USA.
| | - Shawna K Brookens
- Department of Pathology, Microbiology & Immunology, Molecular Pathogenesis Division, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Cancer Biology Program, Vanderbilt University, Nashville, TN, 37232, USA
| | - Ariel L Raybuck
- Department of Pathology, Microbiology & Immunology, Molecular Pathogenesis Division, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
| | - Sung Hoon Cho
- Department of Pathology, Microbiology & Immunology, Molecular Pathogenesis Division, Vanderbilt University Medical Center, Nashville, TN, 37232, USA
- Vanderbilt Institute of Infection, Inflammation, and Immunology, Nashville, TN, 37232, USA
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DeLuca JM, Murphy MK, Wang X, Wilson TJ. FCRL1 Regulates B Cell Receptor-Induced ERK Activation through GRB2. J Immunol 2021; 207:2688-2698. [PMID: 34697226 DOI: 10.4049/jimmunol.2100218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 09/17/2021] [Indexed: 11/19/2022]
Abstract
Regulation of BCR signaling has important consequences for generating effective Ab responses to pathogens and preventing production of autoreactive B cells during development. Currently defined functions of Fc receptor-like (FCRL) 1 include positive regulation of BCR-induced calcium flux, proliferation, and Ab production; however, the mechanistic basis of FCRL1 signaling and its contributions to B cell development remain undefined. Molecular characterization of FCRL1 signaling shows phosphotyrosine-dependent associations with GRB2, GRAP, SHIP-1, and SOS1, all of which can profoundly influence MAPK signaling. In contrast with previous characterizations of FCRL1 as a strictly activating receptor, we discover a role for FCRL1 in suppressing ERK activation under homeostatic and BCR-stimulated conditions in a GRB2-dependent manner. Our analysis of B cells in Fcrl1 -/- mice shows that ERK suppression by FCRL1 is associated with a restriction in the number of cells surviving splenic maturation in vivo. The capacity of FCRL1 to modulate ERK activation presents a potential for FCRL1 to be a regulator of peripheral B cell tolerance, homeostasis, and activation.
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Affiliation(s)
- Jenna M DeLuca
- Department of Microbiology, Miami University, Oxford, OH
| | | | - Xin Wang
- Department of Microbiology, Miami University, Oxford, OH
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Ren A, Sun J, Yin W, Westerberg LS, Miller H, Lee P, Candotti F, Guan F, Lei J, Gong Q, Chen Y, Liu C. Signaling networks in B cell development and related therapeutic strategies. J Leukoc Biol 2021; 111:877-891. [PMID: 34528729 DOI: 10.1002/jlb.2ru0221-088rrr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
B cells are essential for Ab production during humoral immune responses. From decades of B cell research, there is now a detailed understanding of B cell subsets, development, functions, and most importantly, signaling pathways. The complicated pathways in B cells and their interactions with each other are stage-dependent, varying with surface marker expression during B cell development. With the increasing understanding of B cell development and signaling pathways, the mechanisms underlying B cell related diseases are being unraveled as well, making it possible to provide more precise and effective treatments. In this review, we describe several essential and recently discovered signaling pathways in B cell development and take a look at newly developed therapeutic strategies targeted at B cell signaling.
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Affiliation(s)
- Anwen Ren
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jianxuan Sun
- Department and Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wei Yin
- Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lisa S Westerberg
- Department of Microbiology Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Heather Miller
- The Laboratory of Intracellular Parasites, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, Montana, USA
| | - Pamela Lee
- Department of Paediatrics and Adolescent Medicine, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Fabio Candotti
- Division of Immunology and Allergy, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Fei Guan
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiahui Lei
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Quan Gong
- Department of Immunology, School of Medicine, Yangtze University, Jingzhou, China.,Clinical Molecular Immunology Center, School of Medicine, Yangtze University, Jingzhou, China
| | - Yan Chen
- The Second Department of Pediatrics, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Chaohong Liu
- Department of Pathogen Biology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Chappaz S, McArthur K, Kealy L, Law CW, Tailler M, Lane RM, Lieschke A, Ritchie ME, Good-Jacobson KL, Strasser A, Kile BT. Homeostatic apoptosis prevents competition-induced atrophy in follicular B cells. Cell Rep 2021; 36:109430. [PMID: 34289356 DOI: 10.1016/j.celrep.2021.109430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 04/13/2021] [Accepted: 06/30/2021] [Indexed: 12/13/2022] Open
Abstract
While the intrinsic apoptosis pathway is thought to play a central role in shaping the B cell lineage, its precise role in mature B cell homeostasis remains elusive. Using mice in which mature B cells are unable to undergo apoptotic cell death, we show that apoptosis constrains follicular B (FoB) cell lifespan but plays no role in marginal zone B (MZB) cell homeostasis. In these mice, FoB cells accumulate abnormally. This intensifies intercellular competition for BAFF, resulting in a contraction of the MZB cell compartment, and reducing the growth, trafficking, and fitness of FoB cells. Diminished BAFF signaling dampens the non-canonical NF-κB pathway, undermining FoB cell growth despite the concurrent triggering of a protective p53 response. Thus, MZB and FoB cells exhibit a differential requirement for the intrinsic apoptosis pathway. Homeostatic apoptosis constrains the size of the FoB cell compartment, thereby preventing competition-induced FoB cell atrophy.
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Affiliation(s)
- Stéphane Chappaz
- Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia; ACRF Chemical Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia.
| | - Kate McArthur
- ACRF Chemical Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia
| | - Liam Kealy
- Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia; Infection and Immunity Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia
| | - Charity W Law
- Epigenetics and Development Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia
| | - Maximilien Tailler
- Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia
| | - Rachael M Lane
- Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia
| | | | - Matthew E Ritchie
- Epigenetics and Development Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia
| | - Kim L Good-Jacobson
- Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia; Infection and Immunity Program, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia
| | - Andreas Strasser
- Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia; Blood Cells and Blood Cancer Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia
| | - Benjamin T Kile
- Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia; ACRF Chemical Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia; Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, 5005 SA, Australia.
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11
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Fu J, Shi H, Zhan T, Li H, Ye L, Xie L, Wang Z, Wang B, Zheng L. BST-2/Tetherin is involved in BAFF-enhanced proliferation and survival via canonical NF-κB signaling in neoplastic B-lymphoid cells. Exp Cell Res 2021; 398:112399. [PMID: 33245890 DOI: 10.1016/j.yexcr.2020.112399] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 11/19/2020] [Accepted: 11/22/2020] [Indexed: 01/08/2023]
Abstract
The development of Sjögren's syndrome (SS) is accompanied by B cell hyperproliferation and mutation. Our previous study identified aberrant expression of BST-2 (also known as Tetherin/CD317) in B cells from either the peripheral blood or infiltrated salivary glands. However, the roles of BST-2 in the regulation of B cell activation remain unknown. In this study, we identified that BST-2 can respond to BAFF simulation but not to other B cell simulators in neoplastic B cell lines. A CCK-8 assay, an EdU assay and Annexin V/PI staining indicated that BST-2 inhibition attenuated BAFF-enhanced proliferation and survival in both Raji cells and Daudi cells. Screening of BAFF-related signaling in neoplastic B-lymphoid cells indicated that BST-2 was involved in the regulation of NF-κB signaling upon BAFF simulation. However, inhibition of NF-κB by JSH-23 significantly reduced the proliferation and survival of Raji and Daudi cells under both normal and BAFF-simulated conditions. Collectively, our results indicate that BST-2/Tetherin is a BAFF-responsive membrane factor involved in the regulation of NF-κB signaling, thereby assisting in the proliferation and survival of neoplastic B-lymphoid cells. Our study provides a potential molecular mechanism underlying aberrant overactivation of B cells upon SS development.
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Hsu YC, Chen TC, Lin CC, Yuan CT, Hsu CL, Hou HA, Kao CJ, Chuang PH, Chen YR, Chou WC, Tien HF. Phf6-null hematopoietic stem cells have enhanced self-renewal capacity and oncogenic potentials. Blood Adv 2019; 3:2355-67. [PMID: 31395598 DOI: 10.1182/bloodadvances.2019000391] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 06/21/2019] [Indexed: 12/28/2022] Open
Abstract
Plant homeodomain finger gene 6 (PHF6) encodes a 365-amino-acid protein containing 2 plant homology domain fingers. Germline mutations of human PHF6 cause Börjeson-Forssman-Lehmann syndrome, a congenital neurodevelopmental disorder. Loss-of-function mutations of PHF6 are detected in patients with acute leukemia, mainly of T-cell lineage and in a small proportion of myeloid lineage. The functions of PHF6 in physiological hematopoiesis and leukemogenesis remain incompletely defined. To address this question, we generated a conditional Phf6 knockout mouse model and investigated the impact of Phf6 loss on the hematopoietic system. We found that Phf6 knockout mice at 8 weeks of age had reduced numbers of CD4+ and CD8+ T cells in the peripheral blood compared with the wild-type littermates. There were decreased granulocyte-monocytic progenitors but increased Lin-c-Kit+Sca-1+ cells in the marrow of young Phf6 knockout mice. Functional studies, including competitive repopulation unit and serial transplantation assays, revealed an enhanced reconstitution and self-renewal capacity in Phf6 knockout hematopoietic stem cells (HSCs). Aged Phf6 knockout mice had myelodysplasia-like presentations, including decreased platelet counts, megakaryocyte dysplasia, and enlarged spleen related to extramedullary hematopoiesis. Moreover, we found that Phf6 loss lowered the threshold of NOTCH1-induced leukemic transformation at least partially through increased leukemia-initiating cells. Transcriptome analysis on the restrictive rare HSC subpopulations revealed upregulated cell cycling and oncogenic functions, with alteration of key gene expression in those pathways. In summary, our studies show the in vivo crucial roles of Phf6 in physiological and malignant hematopoiesis.
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Espi M, Koppe L, Fouque D, Thaunat O. Chronic Kidney Disease-Associated Immune Dysfunctions: Impact of Protein-Bound Uremic Retention Solutes on Immune Cells. Toxins (Basel) 2020; 12:toxins12050300. [PMID: 32384617 PMCID: PMC7291164 DOI: 10.3390/toxins12050300] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 04/28/2020] [Accepted: 04/30/2020] [Indexed: 12/19/2022] Open
Abstract
Regardless of the primary disease responsible for kidney failure, patients suffering from chronic kidney disease (CKD) have in common multiple impairments of both the innate and adaptive immune systems, the pathophysiology of which has long remained enigmatic. CKD-associated immune dysfunction includes chronic low-grade activation of monocytes and neutrophils, which induces endothelial damage and increases cardiovascular risk. Although innate immune effectors are activated during CKD, their anti-bacterial capacity is impaired, leading to increased susceptibility to extracellular bacterial infections. Finally, CKD patients are also characterized by profound alterations of cellular and humoral adaptive immune responses, which account for an increased risk for malignancies and viral infections. This review summarizes the recent emerging data that link the pathophysiology of CKD-associated immune dysfunctions with the accumulation of microbiota-derived metabolites, including indoxyl sulfate and p-cresyl sulfate, the two best characterized protein-bound uremic retention solutes.
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Affiliation(s)
- Maxime Espi
- Service de Transplantation, Néphrologie et Immunologie Clinique, Hôpital Edouard Herriot, Hospices Civils de Lyon, 69000 Lyon, France;
- CIRI, INSERM U1111, Université Claude Bernard Lyon I, CNRS UMR5308, Ecole Normale Supérieure de Lyon, 69000 Lyon, France
| | - Laetitia Koppe
- Département de Néphrologie-Dialyse-Nutrition, Centre Hôpital Lyon Sud, Hospices Civils de Lyon, 69310 Pierre Bénite, France; (L.K.); (D.F.)
- CarMeN, INSERM U1060, INRA 1397, 69310 Pierre-Bénite, France
- Lyon-Sud Medical Faculty, Université de Lyon, 69000 Lyon, France
| | - Denis Fouque
- Département de Néphrologie-Dialyse-Nutrition, Centre Hôpital Lyon Sud, Hospices Civils de Lyon, 69310 Pierre Bénite, France; (L.K.); (D.F.)
- CarMeN, INSERM U1060, INRA 1397, 69310 Pierre-Bénite, France
- Lyon-Sud Medical Faculty, Université de Lyon, 69000 Lyon, France
| | - Olivier Thaunat
- Service de Transplantation, Néphrologie et Immunologie Clinique, Hôpital Edouard Herriot, Hospices Civils de Lyon, 69000 Lyon, France;
- CIRI, INSERM U1111, Université Claude Bernard Lyon I, CNRS UMR5308, Ecole Normale Supérieure de Lyon, 69000 Lyon, France
- Lyon-Est Medical Faculty, Université de Lyon, 69000 Lyon, France
- Correspondence:
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14
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Liu J, Clayton K, Gao W, Li Y, Zealey C, Budylowski P, Schwartz J, Yue FY, Bie Y, Rini J, Ostrowski M. Trimeric HIV-1 gp140 fused with APRIL, BAFF, and CD40L on the mucosal gp140-specific antibody responses in mice. Vaccine 2020; 38:2149-2159. [PMID: 32014267 DOI: 10.1016/j.vaccine.2020.01.050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 12/04/2019] [Accepted: 01/19/2020] [Indexed: 12/12/2022]
Abstract
HIV-1 envelope (Env)-specific antibody present at mucosal surfaces can block entry of HIV-1 into these portals and thus should be elicited by an HIV-1 preventive vaccine. Since three molecules of tumor necrosis factor superfamily (TNFSF), APRIL, BAFF, and CD40L, could promote mucosal antibody responses, we made fusion constructs of them with an HIV-1 gp140 trimer and tested the mucosal gp140-specific antibody elicited by the fusion constructs in mice using a DNA prime-protein boost vaccination regimen. The fusion constructs formed trimers and displayed both broadly neutralizing antibody epitopes and non-broadly neutralizing antibody epitopes. Compared with the control construct, trimeric gp140, trimeric gp140-APRIL and gp140-BAFF fusion proteins mildly promoted B cell proliferation in vitro, enhanced HIV-1 gp140-binding IgG responses in vaginal lavage or fecal pellets, respectively, and decreased HIV-1 gp140-binding IgA in sera. Gp140-APRIL also augmented HIV-1 gp140-binding IgG in sera. Surprisingly, gp140-CD40L did not promote B cell proliferation in vitro and inhibited mucosal and systemic HIV-1 gp140-binding IgG or IgA. These results suggest that APRIL and BAFF should be further explored as molecular adjuvants for HIV-1 vaccines to enhance mucosal antibody responses, but covalent fusion of TNFSFs to gp140 may hinder their adjuvancy due to steric interactions.
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Affiliation(s)
- Jun Liu
- Clinical Sciences Division, University of Toronto, Toronto, Ontario, Canada.
| | - Kiera Clayton
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Wenbo Gao
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Yu Li
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Chris Zealey
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Patrick Budylowski
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Jordan Schwartz
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Feng Yun Yue
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - Yuan Bie
- Department of Immunology, University of Toronto, Toronto, Ontario, Canada
| | - James Rini
- Department of Biochemistry, University of Toronto, Toronto, Ontario, Canada
| | - Mario Ostrowski
- Clinical Sciences Division, University of Toronto, Toronto, Ontario, Canada; Department of Immunology, University of Toronto, Toronto, Ontario, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada.
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15
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Chen F, Liu X, Chen Y, Liu JY, Lu H, Wang W, Lu X, Dean KC, Gao L, Kaplan HJ, Dean DC, Peng X, Liu Y. Sphere-induced reprogramming of RPE cells into dual-potential RPE stem-like cells. EBioMedicine 2020; 52:102618. [PMID: 31982829 PMCID: PMC6994567 DOI: 10.1016/j.ebiom.2019.102618] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 11/20/2019] [Accepted: 12/18/2019] [Indexed: 12/11/2022] Open
Abstract
Background The retinal pigment epithelium (RPE) has the potential to regenerate the entire neuroretina upon retinal injury in amphibians. In contrast, this regenerative capacity has been lost in mammals. The reprogramming of differentiated somatic cells into induced pluripotent stem cells (iPSCs) by viral transduction of exogenous stem cell factors has triggered a revolution in regenerative medicine. However, the risks of potential mutation(s) caused by random viral vector insertion in host genomes and tumor formation in recipients hamper its clinical application. One alternative is to immortalize adult stem cells with limited potential or to partially reprogram differentiated somatic cells into progenitor-like cells through non-integration protocols. Methods Sphere-induced RPE stem cells (iRPESCs) were generated from adult mouse RPE cells. Their stem cell functionality was studied in a mouse model of retinal degeneration. The molecular mechanism underlying the sphere-induced reprogramming was investigated using microarray and loss-of-function approaches. Findings We provide evidence that our sphere-induced reprogramming protocol can immortalize and transform mouse RPE cells into iRPESCs with dual potential to differentiate into cells that express either RPE or photoreceptor markers both in vitro and in vivo. When subretinally transplanted into mice with retinal degeneration, iRPESCs can integrate to the RPE and neuroretina, thereby delaying retinal degeneration in the model animals. Our molecular analyses indicate that the Hippo signaling pathway is important in iRPESC reprogramming. Interpretation The Hippo factor Yap1 is activated in the nuclei of cells at the borders of spheres. The factors Zeb1 and P300 downstream of the Hippo pathway are shown to bind to the promoters of the stemness genes Oct4, Klf4 and Sox2, thereby likely transactivate them to reprogram RPE cells into iRPESCs. Fund National Natural Science Foundation of China and the National Institute of Health USA.
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Affiliation(s)
- Fenghua Chen
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA; Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing 100005, China
| | - Xiao Liu
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA; Department of Ophthalmology, Second Affiliated Hospital of Xiangya Medical School, Central South University, Changsha, China
| | - Yao Chen
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA; Department of Ophthalmology, Xiangya Hospital, Central South University, Changsha, China
| | - John Y Liu
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA
| | - Huayi Lu
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA; Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Wei Wang
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA
| | - Xiaoqin Lu
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA
| | - Kevin C Dean
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA
| | - Ling Gao
- Department of Ophthalmology, Second Affiliated Hospital of Xiangya Medical School, Central South University, Changsha, China
| | - Henry J Kaplan
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA
| | - Douglas C Dean
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA; James Graham Brown Cancer Center, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA; Birth Defects Center; University of Louisville School of Medicine, Louisville, Kentucky 40202, USA.
| | - Xiaoyan Peng
- Department of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing 100005, China.
| | - Yongqing Liu
- Department of Ophthalmology and Visual Sciences, University of Louisville School of Medicine, 301 E Muhammad Ali Blvd, Louisville, Kentucky 40202, USA; James Graham Brown Cancer Center, University of Louisville School of Medicine, Louisville, Kentucky 40202, USA; Birth Defects Center; University of Louisville School of Medicine, Louisville, Kentucky 40202, USA.
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16
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Xue Z, Wang J, Yu W, Li D, Zhang Y, Wan F, Kou X. Biochanin A protects against PM 2.5-induced acute pulmonary cell injury by interacting with the target protein MEK5. Food Funct 2019; 10:7188-7203. [PMID: 31608342 DOI: 10.1039/c9fo01382b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Epidemiological studies have shown that exposure to ambient fine particulate matter (PM2.5) is associated with an increased risk for cardiopulmonary diseases. The MEK5/ERK5 and NF-κB signaling pathways are closely related to the regulation of acute pulmonary cell injury (APCI) and may play an important role in the underlying pathophysiological mechanisms. Related studies have shown that Biochanin A (BCA) effectively interferes with APCI, but the underlying mechanism through which this occurs is not fully understood. Previously, based on proteomic and bioinformatic research, we found the indispensable role of MEK5 in mediating remission effects of BCA against PM2.5-induced lung toxicity. Therefore, using A549 adenocarcinoma human alveolar basal epithelial cells (A549 cells), we combined western blot and qRT-PCR to study the protective signaling pathways induced by BCA, indicating that MEK5/ERK5 and NF-κB are both involved in mediating APCI in response to PM2.5, and MEK5/ERK5 positively activated NF-κB and its downstream cellular regulatory factors. BCA significantly suppressed PM2.5-induced upregulation of MEK5/ERK5 expression and phosphorylation and activation of NF-κB. Furthermore, due to the specificity of the MEK5/ERK5 protein structure, the binding sites and binding patterns of BCA and MEK5 were analyzed using molecular docking correlation techniques, which showed that there are stable hydrogen bonds between BCA and the PB1 domain of MEK5 as well as its kinase domain. BCA forms a stable complex with MEK5, which has potential effects on MEKK2/3-MEK5-ERK5 ternary interactions, p62/αPKC-mediated NF-κB regulation, and inhibition of MEK5 target protein phosphorylation. Therefore, our study suggests that MEK5 is an important regulator of intracellular signaling of APCI in response to PM2.5 exposure. BCA may exert anti-APCI activity by targeting MEK5 to inhibit activation of the MEK5/ERK5/NF-κB signaling pathway.
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Affiliation(s)
- Zhaohui Xue
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350, Tianjin, China.
| | - Junyu Wang
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350, Tianjin, China.
| | - Wancong Yu
- Tianjin Academy of Agricultural Science, 300381, Tianjin, China
| | - Dan Li
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350, Tianjin, China.
| | - Yixia Zhang
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350, Tianjin, China.
| | - Fang Wan
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350, Tianjin, China.
| | - Xiaohong Kou
- Department of Food Science, School of Chemical Engineering and Technology, Tianjin University, 300350, Tianjin, China.
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17
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Hu S, Wang R, Zhang M, Liu K, Tao J, Tai Y, Zhou W, Wang Q, Wei W. BAFF promotes T cell activation through the BAFF-BAFF-R-PI3K-Akt signaling pathway. Biomed Pharmacother 2019; 114:108796. [PMID: 30921706 DOI: 10.1016/j.biopha.2019.108796] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/02/2019] [Accepted: 03/17/2019] [Indexed: 01/30/2023] Open
Abstract
B-cell activating factor from the tumor necrosis factor family (BAFF) has revealed its critical role in B cell proliferation and survival, as well as the pathogenesis of T-cell mediated autoimmune disease. However, the effect and molecular mechanisms of BAFF on T cell physiological function have not been fully elucidated. In this study it was seen that BAFF can promote the vitality of purified T cells, increase the proportion of CD3+CD4+, CD4+CD25+, CD4+CD154+, and CD4+CD69+ subgroups and reduce the proportion of CD4+CD62L+ subgroups. Negating BAFF activity with Atacicept (TACI-Fc) reverses vitality and activation of T cells. Furthermore, immunofluorescence detection revealed that BAFF promotes the expression of BAFF receptor (BAFF-R) and transmembrane activator and CAML interactor (TACI) in T cells. Flow cytometry displayed that BAFF/BAFF-R activates the PI3K-Akt signaling pathway while the application of PI3K inhibitor (wortmannin) illuminated that BAFF induces T cell vitality and activation through the PI3K-Akt signaling pathway. We conclude that BAFF is involved in not only the physiology of B cells, but also that of T cells. BAFF affects physiological T-cell activation through BAFF-R-mediated activation of the PI3K-Akt signaling pathway which mirrors one of the pathological mechanisms of T cell-mediated autoimmune diseases.
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Affiliation(s)
- Shanshan Hu
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Rui Wang
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Mei Zhang
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Kangkang Liu
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Juan Tao
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Yu Tai
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Weijie Zhou
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China
| | - Qingtong Wang
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China.
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei, China; Key Laboratory of Anti-Inflammatory and Immune Medicine, Ministry of Education, Hefei, China; Anhui Collaborative Innovation Center of Anti-inflammatory and Immune Medicine, Hefei, China.
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18
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Greaves SA, Peterson JN, Torres RM, Pelanda R. Activation of the MEK-ERK Pathway Is Necessary but Not Sufficient for Breaking Central B Cell Tolerance. Front Immunol 2018; 9:707. [PMID: 29686680 PMCID: PMC5900439 DOI: 10.3389/fimmu.2018.00707] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 03/22/2018] [Indexed: 01/12/2023] Open
Abstract
Newly generated bone marrow B cells are positively selected into the peripheral lymphoid tissue only when they express a B cell receptor (BCR) that is nonautoreactive or one that binds self-antigen with only minimal avidity. This positive selection process, moreover, is critically contingent on the ligand-independent tonic signals transduced by the BCR. We have previously shown that when autoreactive B cells express an active form of the rat sarcoma (RAS) oncogene, they upregulate the receptor for the B cell activating factor (BAFFR) and undergo differentiation in vitro and positive selection into the spleen in vivo, overcoming central tolerance. Based on the in vitro use of pharmacologic inhibitors, we further showed that this cell differentiation process is critically dependent on the activation of the mitogen-activated protein kinase kinase pathway MEK (MAPKK)-extracellular signal-regulated kinase (ERK), which is downstream of RAS. Here, we next investigated if activation of ERK is not only necessary but also sufficient to break central B cell tolerance and induce differentiation of autoreactive B cells in vitro and in vivo. Our results demonstrate that activation of ERK is critical for upregulating BAFFR and overcoming suboptimal levels of tonic BCR signals or low amounts of antigen-induced BCR signals during in vitro B cell differentiation. However, direct activation of ERK does not lead high avidity autoreactive B cells to increase BAFFR levels and undergo positive selection and differentiation in vivo. B cell-specific MEK-ERK activation in mice is also unable to lead to autoantibody secretion, and this in spite of a general increase of serum immunoglobulin levels. These findings indicate that additional pathways downstream of RAS are required for high avidity autoreactive B cells to break central and/or peripheral tolerance.
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Affiliation(s)
- Sarah A Greaves
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Jacob N Peterson
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Raul M Torres
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, United States.,Department of Biomedical Research, National Jewish Health, Denver, CO, United States
| | - Roberta Pelanda
- Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO, United States.,Department of Biomedical Research, National Jewish Health, Denver, CO, United States
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19
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Abstract
In recent years, research efforts have been centered on the functional roles of special AT-rich sequence-binding protein (SATB2) in cancer development. Existing studies differ in the types of tumor tissues and cell lines used, resulting in mixed results, which hinder the clear understanding of whether SATB2 acts as a tumor suppressor or promoter. Literature search for this review consisted of a basic search on PubMed using keywords "SATB2" and "special AT-rich sequence-binding protein 2." Each article was then selected for further examination based on relevance of the title. In consideration to possible missing data from a primary PubMed search, after coding for relevant information, articles listed in the references section were filtered for further review. The current literature suggests that SATB2 can act both as a tumor suppressor and as a promoter since it can be regulated by multiple factors and is able to target different downstream genes in various types of cancer cell lines as well as tissues. Future studies should focus on its contradictory roles in different types of tumors. This paper provides a comprehensive review of currently available research on the role of SATB2 in different cancer cells and tissues and may provide some insight into the contradictory roles of SATB2 in cancer development.
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Affiliation(s)
- Qiao Yi Chen
- Department of Environmental Medicine, New York University School of Medicine, NY, USA
| | - Max Costa
- Department of Environmental Medicine, New York University School of Medicine, NY, USA
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20
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Yiwen Z, Shilin G, Yingshi C, Lishi S, Baohong L, Chao L, Linghua L, Ting P, Hui Z. Efficient generation of antigen-specific CTLs by the BAFF-activated human B Lymphocytes as APCs: a novel approach for immunotherapy. Oncotarget 2018; 7:77732-77748. [PMID: 27780916 PMCID: PMC5363617 DOI: 10.18632/oncotarget.12792] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 10/14/2016] [Indexed: 02/07/2023] Open
Abstract
Efficient antigen presentation is indispensable for cytotoxic T lymphocyte (CTL)-mediated immunotherapy. B-lymphocytes propagated with CD40L have been developed as antigen-presenting cells (APCs), but this capacity needs further optimization. Here, we aimed to expand human B-lymphocytes on a large scale while maintaining their antigen-presenting ability by using both CD40L and B-cell activating factor (BAFF). The addition of BAFF enhanced the expansion efficiency and prolonged the culture time without causing apoptosis of the expanded B-cells. This method thus provided an almost unlimited source of cellular adjuvant to achieve sufficient expansion of CTLs in cases where several rounds of stimulation are required. We also showed that the addition of BAFF significantly enhanced the expression of major costimulatory molecules, CD80 and CD86. Subsequently, the antigen-presenting ability of the B-lymphocytes also increased. Consequently, these B-lymphocytes showed robust CTL responses to inhibit tumor growth after tumor-specific peptide pulses. A similar method induced potent antigen-specific CTL responses, which effectively eradicated human immunodeficiency virus type 1 (HIV-1) latency in CD4 T-lymphocytes isolated from patients receiving suppressive anti-retroviral therapy (ART). Together, our findings indicate that potent antigen-specific CTLs can be generated using BAFF-activated B-lymphocytes as APCs ex vivo. This approach can be applied for CTL-mediated immunotherapy in patients with cancers or chronic viral infections.
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Affiliation(s)
- Zhang Yiwen
- Institute of Human Virology, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Gao Shilin
- Institute of Human Virology, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Chen Yingshi
- Institute of Human Virology, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Su Lishi
- Institute of Human Virology, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Luo Baohong
- Institute of Human Virology, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Liu Chao
- Institute of Human Virology, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Li Linghua
- Department of Infectious Diseases, Guangzhou 8th People's Hospital, Guangzhou, Guangdong, 510080, China
| | - Pan Ting
- Institute of Human Virology, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Zhang Hui
- Institute of Human Virology, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Key Laboratory of Tropical Disease Control of Ministry of Education, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China.,Guangdong Engineering Research Center for Antimicrobial Agent and Immunotechnology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
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21
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Granados-Jaén A, Angulo-Ibáñez M, Rovira-Clavé X, Gamez CP, Soriano FX, Reina M, Espel E. Absence of ERK5/MAPK7 delays tumorigenesis in Atm-/- mice. Oncotarget 2016; 7:74435-47. [PMID: 27793024 DOI: 10.18632/oncotarget.12908] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 10/13/2016] [Indexed: 01/08/2023] Open
Abstract
Ataxia-telangiectasia mutated (ATM) is a cell cycle checkpoint kinase that upon activation by DNA damage leads to cell cycle arrest and DNA repair or apoptosis. The absence of Atm or the occurrence of loss-of-function mutations in Atm predisposes to tumorigenesis. MAPK7 has been implicated in numerous types of cancer with pro-survival and pro-growth roles in tumor cells, but its functional relation with tumor suppressors is not clear. In this study, we show that absence of MAPK7 delays death due to spontaneous tumor development in Atm−/− mice. Compared with Atm−/− thymocytes, Mapk7−/−Atm−/− thymocytes exhibited an improved response to DNA damage (increased phosphorylation of H2AX) and a restored apoptotic response after treatment of mice with ionizing radiation. These findings define an antagonistic function of ATM and MAPK7 in the thymocyte response to DNA damage, and suggest that the lack of MAPK7 inhibits thymic lymphoma growth in Atm−/− mice by partially restoring the DNA damage response in thymocytes.
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22
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Wu JL, Chiang MF, Hsu PH, Tsai DY, Hung KH, Wang YH, Angata T, Lin KI. O-GlcNAcylation is required for B cell homeostasis and antibody responses. Nat Commun 2017; 8:1854. [PMID: 29187734 PMCID: PMC5707376 DOI: 10.1038/s41467-017-01677-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 10/06/2017] [Indexed: 01/10/2023] Open
Abstract
O-linked N-acetylglucosamine (O-GlcNAc) transferase (Ogt) catalyzes O-GlcNAc modification. O-GlcNAcylation is increased after cross-linking of the B-cell receptor (BCR), but the physiological function of this reaction is unknown. Here we show that lack of Ogt in B-cell development not only causes severe defects in the activation of BCR signaling, but also perturbs B-cell homeostasis by enhancing apoptosis of mature B cells, partly as a result of impaired response to B-cell activating factor. O-GlcNAcylation of Lyn at serine 19 is crucial for efficient Lyn activation and Syk interaction in BCR-mediated B-cell activation and expansion. Ogt deficiency in germinal center (GC) B cells also results in enhanced apoptosis of GC B cells and memory B cells in an immune response, consequently causing a reduction of antibody levels. Together, these results demonstrate that B cells rely on O-GlcNAcylation to maintain homeostasis, transduce BCR-mediated activation signals and activate humoral immunity. Post-translational modification has a variety of regulatory functions for important immune molecules. Here the authors use B-cell specific knockout mice to show how O-GlcNAcylation is required for functional B cell responses and humoral immunity.
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Affiliation(s)
- Jung-Lin Wu
- Genomics Research Center, Academia Sinica, No. 128, Section 2, Academia Road, Nankang District, Taipei, 115, Taiwan
| | - Ming-Feng Chiang
- Genomics Research Center, Academia Sinica, No. 128, Section 2, Academia Road, Nankang District, Taipei, 115, Taiwan
| | - Pan-Hung Hsu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, No. 2, Beining Road, Jhongjheng District, Keelung, 202, Taiwan
| | - Dong-Yen Tsai
- Genomics Research Center, Academia Sinica, No. 128, Section 2, Academia Road, Nankang District, Taipei, 115, Taiwan.,Institute of Biochemistry and Molecular Biology, National Yang-Ming University, No. 155, Section 2, Linong Street, Beitou District, Taipei, 112, Taiwan
| | - Kuo-Hsuan Hung
- Genomics Research Center, Academia Sinica, No. 128, Section 2, Academia Road, Nankang District, Taipei, 115, Taiwan
| | - Ying-Hsiu Wang
- Genomics Research Center, Academia Sinica, No. 128, Section 2, Academia Road, Nankang District, Taipei, 115, Taiwan.,Graduate Institute of Life Sciences, National Defense Medical Center, No. 161, Section 6, Minquan East Road, Neihu District, Taipei, 114, Taiwan
| | - Takashi Angata
- Institute of Biological Chemistry, Academia Sinica, No. 128, Section 2, Academia Road, Nankang District, Taipei, 115, Taiwan.
| | - Kuo-I Lin
- Genomics Research Center, Academia Sinica, No. 128, Section 2, Academia Road, Nankang District, Taipei, 115, Taiwan.
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23
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Abstract
The number of mature B cells is carefully controlled by signalling from receptors that support B cell survival. The best studied of these are the B cell antigen receptor (BCR) and BAFFR. Recent work has shown that signalling from these receptors is closely linked, involves the CD19 co-receptor, and leads to activation of canonical and non-canonical NF-κB pathways, ERK1, ERK2 and ERK5 MAP kinases, and PI-3 kinases. Importantly, studies show that investigation of the importance of signalling molecules in cell survival requires the use of inducible gene deletions within mature B cells. This overcomes the limitations of many earlier studies using constitutive gene deletions which were unable to distinguish between requirements for a protein in development versus survival.
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Affiliation(s)
| | - Victor Lj Tybulewicz
- The Francis Crick Institute, London NW1 1AT, UK; Imperial College, London W12 0NN, UK.
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24
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Schoellhorn M, Fischer S, Wagner A, Handrick R, Otte K. miR-143 targets MAPK7 in CHO cells and induces a hyperproductive phenotype to enhance production of difficult-to-express proteins. Biotechnol Prog 2017; 33:1046-1058. [DOI: 10.1002/btpr.2475] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 03/24/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Melanie Schoellhorn
- Inst. of Applied Biotechnology, University of Applied Sciences Biberach; Hubertus-Liebrecht-Strasse 35 Biberach 88400 Germany
| | - Simon Fischer
- Inst. of Applied Biotechnology, University of Applied Sciences Biberach; Hubertus-Liebrecht-Strasse 35 Biberach 88400 Germany
| | - Andreas Wagner
- Inst. of Applied Biotechnology, University of Applied Sciences Biberach; Hubertus-Liebrecht-Strasse 35 Biberach 88400 Germany
| | - René Handrick
- Inst. of Applied Biotechnology, University of Applied Sciences Biberach; Hubertus-Liebrecht-Strasse 35 Biberach 88400 Germany
| | - Kerstin Otte
- Inst. of Applied Biotechnology, University of Applied Sciences Biberach; Hubertus-Liebrecht-Strasse 35 Biberach 88400 Germany
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25
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Angulo-Ibáñez M, Rovira-Clavé X, Granados-Jaén A, Downs B, Kim YC, Wang SM, Reina M, Espel E. Erk5 contributes to maintaining the balance of cellular nucleotide levels and erythropoiesis. Cell Cycle 2016; 14:3864-76. [PMID: 26697837 DOI: 10.1080/15384101.2015.1120914] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
An adequate supply of nucleotides is essential for accurate DNA replication, and inappropriate deoxyribonucleotide triphosphate (dNTP) concentrations can lead to replication stress, a common source of DNA damage, genomic instability and tumourigenesis. Here, we provide evidence that Erk5 is necessary for correct nucleotide supply during erythroid development. Mice with Erk5 knockout in the haematopoietic lineage showed impaired erythroid development in bone marrow, accompanied by altered dNTP levels and increased DNA mutagenesis in erythroid progenitors as detected by exome sequencing. Moreover, Erk5-depleted leukemic Jurkat cells presented a marked sensitivity to thymidine-induced S phase stalling, as evidenced by increased H2AX phosphorylation and apoptosis. The increase in thymidine sensitivity correlated with a higher dTTP/dCTP ratio. These results indicate that Erk5 is necessary to maintain the balance of nucleotide levels, thus preventing dNTP misincorporation and DNA damage in proliferative erythroid progenitors and leukemic Jurkat T cells.
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Affiliation(s)
- Maria Angulo-Ibáñez
- a Department of Cell Biology ; Celltec-UB; Facultat de Biologia; Universitat de Barcelona ; Barcelona , Spain
| | - Xavier Rovira-Clavé
- a Department of Cell Biology ; Celltec-UB; Facultat de Biologia; Universitat de Barcelona ; Barcelona , Spain
| | - Alba Granados-Jaén
- a Department of Cell Biology ; Celltec-UB; Facultat de Biologia; Universitat de Barcelona ; Barcelona , Spain
| | - Bradley Downs
- b University of Nebraska Medical Center; Nebraska Medical Center ; Omaha , NE USA
| | - Yeong C Kim
- b University of Nebraska Medical Center; Nebraska Medical Center ; Omaha , NE USA
| | - San Ming Wang
- b University of Nebraska Medical Center; Nebraska Medical Center ; Omaha , NE USA
| | - Manuel Reina
- a Department of Cell Biology ; Celltec-UB; Facultat de Biologia; Universitat de Barcelona ; Barcelona , Spain
| | - Enric Espel
- a Department of Cell Biology ; Celltec-UB; Facultat de Biologia; Universitat de Barcelona ; Barcelona , Spain.,c Department of Physiology and Immunology ; Facultat de Biologia; Universitat de Barcelona ; Barcelona ; Spain
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26
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Wu L, Chen J, Qin Y, Mo X, Huang M, Ru H, Yang Y, Liu J, Lin Y. SATB2 suppresses gastric cancer cell proliferation and migration. Tumour Biol 2015; 37:4597-602. [PMID: 26508023 DOI: 10.1007/s13277-015-4282-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Accepted: 10/19/2015] [Indexed: 02/01/2023] Open
Abstract
Gastric cancer is one of the death-related malignant tumors worldwide. It remains a challenge for the diagnosis and treatment of gastric cancer. Special AT-rich sequence-binding protein 2 (SATB2) is a new tumor suppressive gene and plays important roles in many cancers. However, the role of SATB2 in gastric cancer is still unknown. In the present study, we demonstrated that downregulation of SATB2 was associated with shortened survival in patients with gastric cancer. Ectopic expression of SATB2 inhibited gastric cancer cell proliferation, colony formation, and migration. Overexpression of SATB2 repressed the expression of extracellular signal-regulated kinase 5 (ERK5), and activation of ERK5 restored the SATB2-induced inhibition of proliferation and migration in gastric cancer. This study provided evidence that SATB2 acted as a tumor suppressive gene gastric cancer, serving as a potential therapeutic target.
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Affiliation(s)
- Liucheng Wu
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China.
| | - Jiansi Chen
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China
| | - Yuzhou Qin
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China
| | - Xianwei Mo
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China
| | - Minwei Huang
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China
| | - Haiming Ru
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China
| | - Yang Yang
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China
| | - Jungang Liu
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China
| | - Yuan Lin
- Gastrointestinal Surgery Department, Guangxi Medical University, Tumor Hospital, Nanning, Guangxi, 530021, People's Republic of China
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