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Aiello S, Benigni A, Remuzzi G. Tissue-Resident Macrophages in Solid Organ Transplantation: Harmful or Protective? JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:1051-1061. [PMID: 38498808 DOI: 10.4049/jimmunol.2300625] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/27/2023] [Indexed: 03/20/2024]
Abstract
Transplanted organs carry donor immune cells into the recipient, the majority of which are tissue-resident macrophages (TRMs). The role they play in guiding the fate of the transplanted organ toward acceptance or rejection remains elusive. TRMs originate from both embryonic and bone marrow-derived precursors. Embryo-derived TRMs retain the embryonic capability to proliferate, so they are able to self-renew and, theoretically, persist for extended periods of time after transplantation. Bone marrow-derived TRMs do not proliferate and must constantly be replenished by adult circulating monocytes. Recent studies have aimed to clarify the different roles and interactions between donor TRMs, recipient monocytes, and monocyte-derived macrophages (MFs) after organ transplantation. This review aims to shed light on how MFs affect the fate of a transplanted organ by differentiating between the role of donor TRMs and that of MFs derived from graft infiltrating monocytes.
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Affiliation(s)
- Sistiana Aiello
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy
| | - Ariela Benigni
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy
| | - Giuseppe Remuzzi
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Bergamo, Italy
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2
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Zhu J, Yuan J, Arya S, Du Z, Liu X, Jia J. Exploring the immune microenvironment of osteosarcoma through T cell exhaustion-associated gene expression: a study on prognosis prediction. Front Immunol 2023; 14:1265098. [PMID: 38169731 PMCID: PMC10758463 DOI: 10.3389/fimmu.2023.1265098] [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: 09/26/2023] [Accepted: 12/04/2023] [Indexed: 01/05/2024] Open
Abstract
Background Osteosarcoma is a highly aggressive type of bone cancer with a poor prognosis. In the tumor immune microenvironment, T-cell exhaustion can occur due to various factors, leading to reduced tumor-killing ability. The purpose of this study was to construct a prognostic model based on T-cell exhaustion-associated genes in osteosarcoma. Methods Patient data for osteosarcoma were retrieved from the TARGET and GEO databases. Consensus clustering was employed to identify two novel molecular subgroups. The dissimilarities in the tumor immune microenvironment between these subgroups were evaluated using the "xCell" algorithm. GO and KEGG analyses were conducted to elucidate the underlying mechanisms of gene expression. Predictive risk models were constructed using the least absolute shrinkage and selection operator algorithm and Cox regression analysis. To validate the prognostic significance of the risk gene expression model at the protein level, immunohistochemistry assays were performed on osteosarcoma patient samples. Subsequently, functional analysis of the key risk gene was carried out through in vitro experimentation. Results Four gene expression signatures (PLEKHO2, GBP2, MPP1, and VSIG4) linked to osteosarcoma prognosis were identified within the TARGET-osteosarcoma cohort, categorizing patients into two subgroups. The resulting prognostic model showed strong predictive capability, with area under the receiver operating characteristic curve (AUC) values of 0.728/0.740, 0.781/0.658, and 0.788/0.642 for 1, 3, and 5-year survival in both training and validation datasets. Notably, patients in the low-risk group had significantly higher stromal, immune, and ESTIMATE scores compared to high-risk counterparts. Additionally, a nomogram was developed, exhibiting high accuracy in predicting the survival outcome of osteosarcoma patients. Immunohistochemistry, Kaplan-Meier, and time-dependent AUC analyses consistently supported the prognostic value of the risk model within our osteosarcoma patient cohort. In vitro experiments provided additional validation by demonstrating that the downregulation of GBP2 promoted the proliferation, migration, and invasion of osteosarcoma cells while inhibiting apoptosis. Conclusion The current study established a prognostic signature associated with TEX-related genes and elucidated the impact of the pivotal gene GBP2 on osteosarcoma cells via in vitro experiments. Consequently, it introduces a fresh outlook for clinical prognosis prediction and sets the groundwork for targeted therapy investigations in osteosarcoma.
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Affiliation(s)
- Junchao Zhu
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jinghong Yuan
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Shahrzad Arya
- Division of Surgical Oncology, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Zhi Du
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Xijuan Liu
- Department of Pediatrics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Jingyu Jia
- Department of Orthopedics, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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3
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Small A, Lowe K, Wechalekar MD. Immune checkpoints in rheumatoid arthritis: progress and promise. Front Immunol 2023; 14:1285554. [PMID: 38077329 PMCID: PMC10704353 DOI: 10.3389/fimmu.2023.1285554] [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: 08/30/2023] [Accepted: 11/07/2023] [Indexed: 12/18/2023] Open
Abstract
Rheumatoid arthritis (RA) is one of the most prevalent autoimmune inflammatory conditions, and while the mechanisms driving pathogenesis are yet to be completely elucidated, self-reactive T cells and immune checkpoint pathways have a clear role. In this review, we provide an overview of the importance of checkpoint pathways in the T cell response and describe the involvement of these in RA development and progression. We discuss the relationship between immune checkpoint therapy in cancer and autoimmune adverse events, draw parallels with the involvement of immune checkpoints in RA pathobiology, summarise emerging research into some of the lesser-known pathways, and the potential of targeting checkpoint-related pathways in future treatment approaches to RA management.
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Affiliation(s)
- Annabelle Small
- Department of Rheumatology, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
| | - Katie Lowe
- Department of Rheumatology, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
| | - Mihir D Wechalekar
- Department of Rheumatology, College of Medicine and Public Health, Flinders University, Adelaide, SA, Australia
- Department of Rheumatology, Flinders Medical Centre, Adelaide, SA, Australia
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4
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Wang Q, Lu Q, Jia S, Zhao M. Gut immune microenvironment and autoimmunity. Int Immunopharmacol 2023; 124:110842. [PMID: 37643491 DOI: 10.1016/j.intimp.2023.110842] [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: 05/23/2023] [Revised: 08/14/2023] [Accepted: 08/19/2023] [Indexed: 08/31/2023]
Abstract
A variety of immune cells or tissues are present in the gut to form the gut immune microenvironment by interacting with gut microbiota, and to maintain the gut immune homeostasis. Accumulating evidence indicated that gut microbiota dysbiosis might break the homeostasis of the gut immune microenvironment, which was associated with many health problems including autoimmune diseases. Moreover, disturbance of the gut immune microenvironment can also induce extra-intestinal autoimmune disorders through the migration of intestinal pro-inflammatory effector cells from the intestine to peripheral inflamed sites. This review discussed the composition of the gut immune microenvironment and its association with autoimmunity. These findings are expected to provide new insights into the pathogenesis of various autoimmune disorders, as well as novel strategies for the prevention and treatment against related diseases.
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Affiliation(s)
- Qiaolin Wang
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China; Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences, Nanjing 210042, China
| | - Qianjin Lu
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China; Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences, Nanjing 210042, China
| | - Sujie Jia
- Department of Pharmacy, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China.
| | - Ming Zhao
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China; Key Laboratory of Basic and Translational Research on Immune-Mediated Skin Diseases, Chinese Academy of Medical Sciences, Nanjing 210042, China.
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5
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Ebstein SY, Rafique A, Zhou Y, Krasco A, Montalvo-Ortiz W, Yu L, Custodio L, Adam RC, Bloch N, Lee K, Adewale F, Vergata D, Luz A, Coquery S, Daniel B, Ullman E, Franklin MC, Hermann A, Huang T, Olson W, Davis S, Murphy AJ, Sleeman MA, Wei J, Skokos D. VSIG4 interaction with heparan sulfates inhibits VSIG4-complement binding. Glycobiology 2023; 33:591-604. [PMID: 37341346 PMCID: PMC10426322 DOI: 10.1093/glycob/cwad050] [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: 07/18/2022] [Revised: 06/12/2023] [Accepted: 06/20/2023] [Indexed: 06/22/2023] Open
Abstract
V-set and immunoglobulin domain-containing 4 (VSIG4) is a complement receptor of the immunoglobulin superfamily that is specifically expressed on tissue resident macrophages, and its many reported functions and binding partners suggest a complex role in immune function. VSIG4 is reported to have a role in immune surveillance as well as in modulating diverse disease phenotypes such as infections, autoimmune conditions, and cancer. However, the mechanism(s) governing VSIG4's complex, context-dependent role in immune regulation remains elusive. Here, we identify cell surface and soluble glycosaminoglycans, specifically heparan sulfates, as novel binding partners of VSIG4. We demonstrate that genetic deletion of heparan sulfate synthesis enzymes or cleavage of cell-surface heparan sulfates reduced VSIG4 binding to the cell surface. Furthermore, binding studies demonstrate that VSIG4 interacts directly with heparan sulfates, with a preference for highly sulfated moieties and longer glycosaminoglycan chains. To assess the impact on VSIG4 biology, we show that heparan sulfates compete with known VSIG4 binding partners C3b and iC3b. Furthermore, mutagenesis studies indicate that this competition occurs through overlapping binding epitopes for heparan sulfates and complement on VSIG4. Together these data suggest a novel role for heparan sulfates in VSIG4-dependent immune modulation.
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Affiliation(s)
- Sarah Y Ebstein
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Ashique Rafique
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Yi Zhou
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Amanda Krasco
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Welby Montalvo-Ortiz
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Lola Yu
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Luisaidy Custodio
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Rene C Adam
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Nicolin Bloch
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Ken Lee
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Funmilola Adewale
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Dominic Vergata
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Antonio Luz
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Sebastien Coquery
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Benjamin Daniel
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Erica Ullman
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Matthew C Franklin
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Aynur Hermann
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Tammy Huang
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - William Olson
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Samuel Davis
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Andrew J Murphy
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Matthew A Sleeman
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Joyce Wei
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
| | - Dimitris Skokos
- Regeneron Pharmaceuticals, 777 Old Saw Mill River Road, Tarrytown, NY 10591, United States
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Santarsiero D, Aiello S. The Complement System in Kidney Transplantation. Cells 2023; 12:cells12050791. [PMID: 36899927 PMCID: PMC10001167 DOI: 10.3390/cells12050791] [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: 01/02/2023] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Kidney transplantation is the therapy of choice for patients who suffer from end-stage renal diseases. Despite improvements in surgical techniques and immunosuppressive treatments, long-term graft survival remains a challenge. A large body of evidence documented that the complement cascade, a part of the innate immune system, plays a crucial role in the deleterious inflammatory reactions that occur during the transplantation process, such as brain or cardiac death of the donor and ischaemia/reperfusion injury. In addition, the complement system also modulates the responses of T cells and B cells to alloantigens, thus playing a crucial role in cellular as well as humoral responses to the allograft, which lead to damage to the transplanted kidney. Since several drugs that are capable of inhibiting complement activation at various stages of the complement cascade are emerging and being developed, we will discuss how these novel therapies could have potential applications in ameliorating outcomes in kidney transplantations by preventing the deleterious effects of ischaemia/reperfusion injury, modulating the adaptive immune response, and treating antibody-mediated rejection.
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Washburn RL, Dufour JM. Complementing Testicular Immune Regulation: The Relationship between Sertoli Cells, Complement, and the Immune Response. Int J Mol Sci 2023; 24:ijms24043371. [PMID: 36834786 PMCID: PMC9965741 DOI: 10.3390/ijms24043371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 02/01/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Sertoli cells within the testis are instrumental in providing an environment for spermatogenesis and protecting the developing germ cells from detrimental immune responses which could affect fertility. Though these immune responses consist of many immune processes, this review focuses on the understudied complement system. Complement consists of 50+ proteins including regulatory proteins, immune receptors, and a cascade of proteolytic cleavages resulting in target cell destruction. In the testis, Sertoli cells protect the germ cells from autoimmune destruction by creating an immunoregulatory environment. Most studies on Sertoli cells and complement have been conducted in transplantation models, which are effective in studying immune regulation during robust rejection responses. In grafts, Sertoli cells survive activated complement, have decreased deposition of complement fragments, and express many complement inhibitors. Moreover, the grafts have delayed infiltration of immune cells and contain increased infiltration of immunosuppressive regulatory T cells as compared to rejecting grafts. Additionally, anti-sperm antibodies and lymphocyte infiltration have been detected in up to 50% and 30% of infertile testes, respectively. This review seeks to provide an updated overview of the complement system, describe its relationship with immune cells, and explain how Sertoli cells may regulate complement in immunoprotection. Identifying the mechanism Sertoli cells use to protect themselves and germ cells against complement and immune destruction is relevant for male reproduction, autoimmunity, and transplantation.
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Affiliation(s)
- Rachel L Washburn
- Immunology and Infectious Diseases, Graduate School of Biomedical Sciences, Texas Tech University Health Sciences Center, Lubbock, TX 79424, USA
- Department of Cell Biology and Biochemistry, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79424, USA
| | - Jannette M Dufour
- Department of Cell Biology and Biochemistry, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79424, USA
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8
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Li Y, Wang Q, Li J, Li A, Wang Q, Zhang Q, Chen Y. Therapeutic modulation of V Set and Ig domain-containing 4 (VSIG4) signaling in immune and inflammatory diseases. Cytotherapy 2023; 25:561-572. [PMID: 36642683 DOI: 10.1016/j.jcyt.2022.12.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/14/2022] [Accepted: 12/14/2022] [Indexed: 01/15/2023]
Abstract
Inflammation is the result of acute and chronic stresses, caused by emotional or physical trauma, or nutritional or environmental pollutants, and brings serious harm to human life and health. As an important cellular component of the innate immune barrier, the macrophage plays a key role in maintaining tissue homeostasis and promoting tissue repair by controlling infection and resolving inflammation. Several studies suggest that V Set and Ig domain-containing 4 is specifically expressed in tissue macrophages and is associated with a variety of inflammatory diseases. In this paper, we mainly summarize the recent research on V Set and Ig domain-containing 4 structures, functions, function and roles in acute and chronic inflammatory diseases, and provide a novel therapeutic avenue for the treatment of inflammatory diseases, including nervous system, urinary, respiratory and metabolic diseases.
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Affiliation(s)
- You Li
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, Liaoning, China; Engineering Technology Research Center for the Utilization of Functional Components of Organic Natural Products, Dalian University, Dalian, Liaoning, China
| | - Qi Wang
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, Liaoning, China; Engineering Technology Research Center for the Utilization of Functional Components of Organic Natural Products, Dalian University, Dalian, Liaoning, China
| | - Jiaxin Li
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, Liaoning, China; Engineering Technology Research Center for the Utilization of Functional Components of Organic Natural Products, Dalian University, Dalian, Liaoning, China
| | - Aohan Li
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, Liaoning, China; Engineering Technology Research Center for the Utilization of Functional Components of Organic Natural Products, Dalian University, Dalian, Liaoning, China
| | - Qianqian Wang
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, Liaoning, China; Engineering Technology Research Center for the Utilization of Functional Components of Organic Natural Products, Dalian University, Dalian, Liaoning, China
| | - Qinggao Zhang
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, Liaoning, China; Engineering Technology Research Center for the Utilization of Functional Components of Organic Natural Products, Dalian University, Dalian, Liaoning, China.
| | - Yingqing Chen
- Chronic Disease Research Center, Medical College, Dalian University, Dalian, Liaoning, China; Engineering Technology Research Center for the Utilization of Functional Components of Organic Natural Products, Dalian University, Dalian, Liaoning, China.
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9
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Vitale A, Alivernini S, Caporali R, Cassone G, Bruno D, Cantarini L, Lopalco G, Rossini M, Atzeni F, Favalli EG, Conti F, Gremese E, Iannone F, Ferraccioli GF, Lapadula G, Sebastiani M. From Bench to Bedside in Rheumatoid Arthritis from the "2022 GISEA International Symposium". J Clin Med 2023; 12:jcm12020527. [PMID: 36675455 PMCID: PMC9863451 DOI: 10.3390/jcm12020527] [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: 11/14/2022] [Revised: 12/30/2022] [Accepted: 01/03/2023] [Indexed: 01/11/2023] Open
Abstract
While precision medicine is still a challenge in rheumatic disease, in recent years many advances have been made regarding pathogenesis, the treatment of inflammatory arthropathies, and their interaction. New insight into the role of inflammasome and synovial tissue macrophage subsets as predictors of drug response give hope for future tailored therapeutic strategies and a personalized medicine approach in inflammatory arthropathies. Here, we discuss the main pathogenetic mechanisms and therapeutic approaches towards precision medicine in rheumatoid arthritis from the 2022 International GISEA/OEG Symposium.
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Affiliation(s)
- Antonio Vitale
- Department of Medical Sciences, Surgery and Neurosciences, Research Center of Systemic Autoinflammatory Diseases and Behçet’s Disease Clinic, University of Siena, 53100 Siena, SI, Italy
| | - Stefano Alivernini
- Immunology Research Core Facility, Gemelli Science and Technology Park, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, RM, Italy
- Division of Rheumatology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00168 Rome, RM, Italy
| | - Roberto Caporali
- Division of Clinical Rheumatology, ASST Gaetano Pini-CTO Institute, 20122 Milano, MI, Italy
- Department of Clinical Sciences and Community Health, Research Center for Pediatric and Adult Rheumatic Diseases (RECAP.RD), University of Milan, 20122 Milano, MI, Italy
| | - Giulia Cassone
- Rheumatology Unit, Azienda Ospedaliera Policlinico di Modena, University of Modena and Reggio Emilia, 41121 Modena, MO, Italy
| | - Dario Bruno
- Immunology Research Core Facility, Gemelli Science and Technology Park, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, RM, Italy
| | - Luca Cantarini
- Department of Medical Sciences, Surgery and Neurosciences, Research Center of Systemic Autoinflammatory Diseases and Behçet’s Disease Clinic, University of Siena, 53100 Siena, SI, Italy
| | - Giuseppe Lopalco
- Rheumatology Unit, Department of Emergency Surgery and Organ Transplantations, University of Bari, 70121 Bari, BA, Italy
| | - Maurizio Rossini
- Rheumatology Unit, University of Verona, Policlinico G.B. Rossi, Piazzale A. Scuro, 37134 Verona, VR, Italy
| | - Fabiola Atzeni
- Rheumatology Unit, Department of Experimental and Internal Medicine, University of Messina, 98122 Messina, ME, Italy
| | - Ennio Giulio Favalli
- Division of Clinical Rheumatology, ASST Gaetano Pini-CTO Institute, 20122 Milano, MI, Italy
- Department of Clinical Sciences and Community Health, Research Center for Pediatric and Adult Rheumatic Diseases (RECAP.RD), University of Milan, 20122 Milano, MI, Italy
| | - Fabrizio Conti
- Lupus Clinic, Dipartimento di Scienze Cliniche Internistiche, Anestesiologiche e Cardiovascolari, Sapienza University of Rome, 00185 Roma, RM, Italy
| | - Elisa Gremese
- Immunology Research Core Facility, Gemelli Science and Technology Park, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, RM, Italy
- Division of Clinical Immunology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 20123 Milano, MI, Italy
| | - Florenzo Iannone
- Rheumatology Unit, Department of Emergency Surgery and Organ Transplantations, University of Bari, 70121 Bari, BA, Italy
| | | | - Giovanni Lapadula
- Rheumatology Unit, Department of Emergency Surgery and Organ Transplantations, University of Bari, 70121 Bari, BA, Italy
| | - Marco Sebastiani
- Rheumatology Unit, Azienda Ospedaliera Policlinico di Modena, University of Modena and Reggio Emilia, 41121 Modena, MO, Italy
- Correspondence:
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Wang Y, Zhang Y, Li J, Li C, Zhao R, Shen C, Liu W, Rong J, Wang Z, Ge J, Shi B. Hypoxia Induces M2 Macrophages to Express VSIG4 and Mediate Cardiac Fibrosis After Myocardial Infarction. Theranostics 2023; 13:2192-2209. [PMID: 37153746 PMCID: PMC10157727 DOI: 10.7150/thno.78736] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 02/22/2023] [Indexed: 05/10/2023] Open
Abstract
M2 macrophage-mediated tissue repair plays an important role in acute myocardial infarction (AMI). Additionally, VSIG4, which is mainly expressed on tissue-resident and M2 macrophages, is crucial for the regulation of immune homeostasis; however, its effects on AMI remain unknown. In this study, we aimed to investigate the functional significance of VSIG4 in AMI using VSIG4 knockout and adoptive bone marrow transfer chimeric models. We also determined the function of cardiac fibroblasts (CFs) through gain- or loss-of-function experiments. We showed that VSIG4 promotes scar formation and orchestrates the myocardial inflammatory response after AMI, while also promoting TGF-β1 and IL-10. Moreover, we revealed that hypoxia promotes VSIG4 expression in cultured bone marrow M2 macrophages, ultimately leading to the conversion of CFs to myofibroblasts. Our results reveal a crucial role for VSIG4 in the process of AMI in mice and provide a potential immunomodulatory therapeutic avenue for fibrosis repair after AMI.
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Affiliation(s)
- Yan Wang
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
- Soochow University, Suzhou, China
| | - Yu Zhang
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Jiao Li
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Chaofu Li
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Ranzun Zhao
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Changyin Shen
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Weiwei Liu
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Jidong Rong
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - Zhenglong Wang
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
- ✉ Corresponding author: Bei Shi, Junbo Ge, and Zhenglong Wang. No. 149, Dalian Road, Huichuan District, Zunyi City, Guizhou, China. Email address:
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- ✉ Corresponding author: Bei Shi, Junbo Ge, and Zhenglong Wang. No. 149, Dalian Road, Huichuan District, Zunyi City, Guizhou, China. Email address:
| | - Bei Shi
- Department of Cardiology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
- Soochow University, Suzhou, China
- ✉ Corresponding author: Bei Shi, Junbo Ge, and Zhenglong Wang. No. 149, Dalian Road, Huichuan District, Zunyi City, Guizhou, China. Email address:
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11
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Zarantonello A, Revel M, Grunenwald A, Roumenina LT. C3-dependent effector functions of complement. Immunol Rev 2023; 313:120-138. [PMID: 36271889 PMCID: PMC10092904 DOI: 10.1111/imr.13147] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
C3 is the central effector molecule of the complement system, mediating its multiple functions through different binding sites and their corresponding receptors. We will introduce the C3 forms (native C3, C3 [H2 O], and intracellular C3), the C3 fragments C3a, C3b, iC3b, and C3dg/C3d, and the C3 expression sites. To highlight the important role that C3 plays in human biological processes, we will give an overview of the diseases linked to C3 deficiency and to uncontrolled C3 activation. Next, we will present a structural description of C3 activation and of the C3 fragments generated by complement regulation. We will proceed by describing the C3a interaction with the anaphylatoxin receptor, followed by the interactions of opsonins (C3b, iC3b, and C3dg/C3d) with complement receptors, divided into two groups: receptors bearing complement regulatory functions and the effector receptors without complement regulatory activity. We outline the molecular architecture of the receptors, their binding sites on the C3 activation fragments, the cells expressing them, the diversity of their functions, and recent advances. With this review, we aim to give an up-to-date analysis of the processes triggered by C3 activation fragments on different cell types in health and disease contexts.
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Affiliation(s)
- Alessandra Zarantonello
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Margot Revel
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Anne Grunenwald
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
| | - Lubka T Roumenina
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université de Paris, Paris, France
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12
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Sun M, Ji X, Xie M, Chen X, Zhang B, Luo X, Feng Y, Liu D, Wang Y, Li Y, Liu B, Xia L, Huang W. Identification of necroptosis-related subtypes, development of a novel signature, and characterization of immune infiltration in colorectal cancer. Front Immunol 2022; 13:999084. [PMID: 36544770 PMCID: PMC9762424 DOI: 10.3389/fimmu.2022.999084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022] Open
Abstract
Introduction Necroptosis, a type of programmed cell death, has recently been extensively studied as an important pathway regulating tumor development, metastasis, and immunity. However, the expression patterns of necroptosis-related genes (NRGs) in colorectal cancer (CRC) and their potential roles in the tumor microenvironment (TME) have not been elucidated. Methods We explored the expression patterns of NRGs in 1247 colorectal cancer samples from genetics and transcriptional perspective. Based on a consensus clustering algorithm, we identified NRG molecular subtypes and gene subtypes, respectively. Furthermore, we constructed a necroptosis-related signature for predicting overall survival time and verified the predictive ability of the model. Using the ESTIMATE, CIBERSORT, and ssGSEA algorithms, we assessed the association between the above subtypes, scores and immune infiltration. Results Most NRGs were differentially expressed between CRC tissues and normal tissues. We found that distinct subtypes exhibited different NRGs expression, patients' prognosis, immune checkpoint gene expression, and immune infiltration characteristics. The scores calculated from the necroptosis-related signature can be used to classify patients into high-risk and low-risk groups, with the high-risk group corresponding to reduced immune cell infiltration and immune function, and a greater risk of immune dysfunction and immune escape. Discussion Our comprehensive analysis of NRGs in CRC demonstrated their potential role in clinicopathological features, prognosis, and immune infiltration in the TME. These findings help us deepen our understanding of NRGs and the tumor microenvironment landscape, and lay a foundation for effectively assessing patient outcomes and promoting more effective immunotherapy.
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Affiliation(s)
- Mengyu Sun
- Department of Gastroenterology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaoyu Ji
- Department of Gastroenterology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Meng Xie
- Department of Gastroenterology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaoping Chen
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Wuhan, Hubei, China
- Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, China
| | - Bixiang Zhang
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Wuhan, Hubei, China
- Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, China
| | - Xiangyuan Luo
- Department of Gastroenterology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yangyang Feng
- Department of Gastroenterology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Danfei Liu
- Department of Gastroenterology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yijun Wang
- Department of Gastroenterology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Yiwei Li
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics and Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Bifeng Liu
- The Key Laboratory for Biomedical Photonics of MOE at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics and Molecular Imaging Key Laboratory, Systems Biology Theme, Department of Biomedical Engineering, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, China
| | - Limin Xia
- Department of Gastroenterology, Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Institute of Liver and Gastrointestinal Diseases, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wenjie Huang
- Hubei Key Laboratory of Hepato-Pancreato-Biliary Diseases, Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Clinical Medicine Research Center for Hepatic Surgery of Hubei Province, Wuhan, Hubei, China
- Key Laboratory of Organ Transplantation, Ministry of Education and Ministry of Public Health, Wuhan, Hubei, China
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13
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Zhou X, Khan S, Huang D, Li L. V-Set and immunoglobulin domain containing (VSIG) proteins as emerging immune checkpoint targets for cancer immunotherapy. Front Immunol 2022; 13:938470. [PMID: 36189222 PMCID: PMC9520664 DOI: 10.3389/fimmu.2022.938470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
The development of immune checkpoint inhibitors is becoming a promising approach to fight cancers. Antibodies targeting immune checkpoint proteins such as CTLA-4 and PD-1 can reinvigorate endogenous antitumor T-cell responses and bring durable advantages to several malignancies. However, only a small subset of patients benefit from these checkpoint inhibitors. Identification of new immune checkpoints with the aim of combination blockade of multiple immune inhibitory pathways is becoming necessary to improve efficiency. Recently, several B7 family-related proteins, TIGIT, VSIG4, and VSIG3, which belong to the VSIG family, have attracted substantial attention as coinhibitory receptors during T-cell activation. By interacting with their corresponding ligands, these VSIG proteins inhibit T-cell responses and maintain an immune suppressive microenvironment in tumors. These results indicated that VSIG family members are becoming putative immune checkpoints in cancer immunotherapy. In this review, we summarized the function of each VSIG protein in regulating immune responses and in tumor progression, thus providing an overview of our current understanding of VSIG family members.
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Affiliation(s)
- Xia Zhou
- Department of Oncology, The First Affiliated Hospital of University of Science and Technology of China (USTC), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Sohail Khan
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Dabing Huang
- Department of Oncology, The First Affiliated Hospital of University of Science and Technology of China (USTC), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- *Correspondence: Dabing Huang, ; Lu Li,
| | - Lu Li
- Department of Oncology, The First Affiliated Hospital of University of Science and Technology of China (USTC), Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
- *Correspondence: Dabing Huang, ; Lu Li,
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14
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Lv C, Sun Y, Zhang ZY, Aboelela Z, Qiu X, Meng ZX. β-cell dynamics in type 2 diabetes and in dietary and exercise interventions. J Mol Cell Biol 2022; 14:6656373. [PMID: 35929791 PMCID: PMC9710517 DOI: 10.1093/jmcb/mjac046] [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: 02/16/2022] [Revised: 05/07/2022] [Accepted: 08/03/2022] [Indexed: 01/14/2023] Open
Abstract
Pancreatic β-cell dysfunction and insulin resistance are two of the major causes of type 2 diabetes (T2D). Recent clinical and experimental studies have suggested that the functional capacity of β-cells, particularly in the first phase of insulin secretion, is a primary contributor to the progression of T2D and its associated complications. Pancreatic β-cells undergo dynamic compensation and decompensation processes during the development of T2D, in which metabolic stresses such as endoplasmic reticulum stress, oxidative stress, and inflammatory signals are key regulators of β-cell dynamics. Dietary and exercise interventions have been shown to be effective approaches for the treatment of obesity and T2D, especially in the early stages. Whilst the targeted tissues and underlying mechanisms of dietary and exercise interventions remain somewhat vague, accumulating evidence has implicated the improvement of β-cell functional capacity. In this review, we summarize recent advances in the understanding of the dynamic adaptations of β-cell function in T2D progression and clarify the effects and mechanisms of dietary and exercise interventions on β-cell dysfunction in T2D. This review provides molecular insights into the therapeutic effects of dietary and exercise interventions on T2D, and more importantly, it paves the way for future research on the related underlying mechanisms for developing precision prevention and treatment of T2D.
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Affiliation(s)
- Chengan Lv
- Department of Pathology and Pathophysiology and Metabolic Research Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China,Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yuchen Sun
- Department of Pathology and Pathophysiology and Metabolic Research Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China,Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China,Zhejiang University–University of Edinburgh Institute (ZJE), Zhejiang University, Haining 314400, China
| | - Zhe Yu Zhang
- Department of Pathology and Pathophysiology and Metabolic Research Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China,Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Zeyad Aboelela
- Department of Pathology and Pathophysiology and Metabolic Research Center of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China,Key Laboratory of Disease Proteomics of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China,Bachelors of Surgery, Bachelors of Medicine (MBBS), Zhejiang University School of Medicine, Hangzhou 310003, China
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15
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Kurowska-Stolarska M, Alivernini S. Synovial tissue macrophages in joint homeostasis, rheumatoid arthritis and disease remission. Nat Rev Rheumatol 2022; 18:384-397. [PMID: 35672464 DOI: 10.1038/s41584-022-00790-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/04/2022] [Indexed: 02/07/2023]
Abstract
Synovial tissue macrophages (STMs) were principally recognized as having a pro-inflammatory role in rheumatoid arthritis (RA), serving as the main producers of pathogenic tumour necrosis factor (TNF). Recent advances in single-cell omics have facilitated the discovery of distinct STM populations, providing an atlas of discrete phenotypic clusters in the context of healthy and inflamed joints. Interrogation of the functions of distinct STM populations, via ex vivo and experimental mouse models, has re-defined our understanding of STM biology, opening up new opportunities to better understand the pathology of the arthritic joint. These works have identified STM subpopulations that form a protective lining barrier within the synovial membrane and actively participate in the remission of RA. We discuss how distinct functions of STM clusters shape the synovial tissue environment in health, during inflammation and in disease remission, as well as how an increased understanding of STM heterogeneity might aid the prediction of clinical outcomes and inform novel treatments for RA.
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Affiliation(s)
- Mariola Kurowska-Stolarska
- Research into Inflammatory Arthritis Centre Versus Arthritis (RACE), Glasgow, UK.
- Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK.
| | - Stefano Alivernini
- Research into Inflammatory Arthritis Centre Versus Arthritis (RACE), Glasgow, UK.
- Division of Rheumatology, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy.
- Division of Rheumatology, Università Cattolica del Sacro Cuore, Rome, Italy.
- Immunology Research Core Facility, Gemelli Science and Technology Park (GSTeP), Rome, Italy.
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16
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Widyagarini A, Nishii N, Kawano Y, Zhang C, Azuma M. VSIG4/CRIg directly regulates early CD8 + T cell activation through its counter-receptor in a narrow window. Biochem Biophys Res Commun 2022; 614:100-106. [PMID: 35576680 DOI: 10.1016/j.bbrc.2022.04.120] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 04/26/2022] [Indexed: 11/02/2022]
Abstract
T-cell responses are fine-tuned by positive and negative co-signal molecules expressed on immune cells and adjacent tissues. VSIG4 is a newly identified member of the B7 family of ligands, which negatively regulates innate inflammatory and CD4+ T cell-mediated responses. However, little is known about the direct effects of VSIG4, which are exerted through an unidentified counter-receptor on CD8+ T cells. We investigated the binding of the VSIG4-Ig fusion protein during CD8+ T cell activation, and the functional involvement of VSIG4 pathway, using VSIG4-Ig and VSIG4-transfectants. VSIG4-Ig binding to CD8+ T cells was temporally observed in the CD44high phenotype during initial activation. VSIG4-Ig binding was observed earlier than the induction of PD-1, LAG3, and TIM-3, which are immune checkpoint receptors for exhausted CD8+ T cells. Immobilized VSIG4-Ig inhibited anti-CD3/CD28 mAb-induced CD8+ T cell activation, as indicated by proliferation and IFN-γ production, similar to the downregulation of T-bet and Eomesodermin transcription factors. VSIG4 on FcγR+ P815 or specific antigen-presenting E.G7 cells inhibited the generation of effector CD8+ T cells, as indicated by proliferation, IFN-γ and TNF-α expression, and granule degradation, compared to parental cells. However, the window for the regulatory function of VSIG4 was narrow and dependent on the strength of TCR (and CD28)-mediated signals. Our results suggested that VSIG4 directly delivers co-inhibitory signals via an as-yet unidentified counter-receptor on activated CD8+ T cells. VSIG4-mediated CD8+ T cell tolerance might contribute to the steady-state maintenance of homeostasis.
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Affiliation(s)
- Amrita Widyagarini
- Department of Molecular Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naoto Nishii
- Department of Molecular Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yohei Kawano
- Department of Molecular Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Chenyang Zhang
- Department of Molecular Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Miyuki Azuma
- Department of Molecular Immunology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan.
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17
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Song J, Zhao R, Yan C, Luo S, Xi J, Ding P, Li L, Hu W, Zhao C. A Targeted Complement Inhibitor CRIg/FH Protects Against Experimental Autoimmune Myasthenia Gravis in Rats via Immune Modulation. Front Immunol 2022; 13:746068. [PMID: 35154091 PMCID: PMC8825366 DOI: 10.3389/fimmu.2022.746068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 01/04/2022] [Indexed: 11/13/2022] Open
Abstract
Antibody-induced complement activation may cause injury of the neuromuscular junction (NMJ) and is thus considered as a primary pathogenic factor in human myasthenia gravis (MG) and animal models of experimental autoimmune myasthenia gravis (EAMG). In this study, we tested whether CRIg/FH, a targeted complement inhibitor, could attenuate NMJ injury in rat MG models. We first demonstrated that CRIg/FH could inhibit complement-dependent cytotoxicity on human rhabdomyosarcoma TE671 cells induced by MG patient-derived IgG in vitro. Furthermore, we investigated the therapeutic effect of CRIg/FH in a passive and an active EAMG rodent model. In both models, administration of CRIg/FH could significantly reduce the complement-mediated end-plate damage and suppress the development of EAMG. In the active EAMG model, we also found that CRIg/FH treatment remarkably reduced the serum concentration of autoantibodies and of the cytokines including IFN-γ, IL-2, IL-6, and IL-17, and upregulated the percentage of Treg cells in the spleen, which was further verified in vitro. Therefore, our findings indicate that CRIg/FH may hold the potential for the treatment of MG via immune modulation.
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Affiliation(s)
- Jie Song
- Department of Neurology, Huashan Hospital Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China
| | - Rui Zhao
- Department of Neurology, Huashan Hospital Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China
| | - Chong Yan
- Department of Neurology, Huashan Hospital Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China
| | - Sushan Luo
- Department of Neurology, Huashan Hospital Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China
| | - Jianying Xi
- Department of Neurology, Huashan Hospital Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China
| | - Peipei Ding
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Ling Li
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Weiguo Hu
- Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China.,Key Laboratory of Breast Cancer in Shanghai, Fudan University Shanghai Cancer Center, Fudan University, Shanghai, China
| | - Chongbo Zhao
- Department of Neurology, Huashan Hospital Fudan University, Shanghai, China.,National Center for Neurological Disorders, Shanghai, China
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18
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Gao H, Jin Z, Tang K, Ji Y, Suarez J, Suarez JA, Cunha e Rocha K, Zhang D, Dillmann WH, Mahata SK, Ying W. Microbial DNA Enrichment Promotes Adrenomedullary Inflammation, Catecholamine Secretion, and Hypertension in Obese Mice. J Am Heart Assoc 2022; 11:e024561. [PMID: 35112881 PMCID: PMC9245808 DOI: 10.1161/jaha.121.024561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Obesity is an established risk factor for hypertension. Although obesity‐induced gut barrier breach leads to the leakage of various microbiota‐derived products into host circulation and distal organs, the roles of microbiota in mediating the development of obesity‐associated adrenomedullary disorders and hypertension have not been elucidated. We seek to explore the impacts of microbial DNA enrichment on inducing obesity‐related adrenomedullary abnormalities and hypertension. Methods and Results Obesity was accompanied by remarkable bacterial DNA accumulation and elevated inflammation in the adrenal glands. Gut microbial DNA containing extracellular vesicles (mEVs) were readily leaked into the bloodstream and infiltrated into the adrenal glands in obese mice, causing microbial DNA enrichment. In lean wild‐type mice, adrenal macrophages expressed CRIg (complement receptor of the immunoglobulin superfamily) that efficiently blocks the infiltration of gut mEVs. In contrast, the adrenal CRIg+ cell population was greatly decreased in obese mice. In lean CRIg−/− or C3−/− (complement component 3) mice intravenously injected with gut mEVs, adrenal microbial DNA accumulation elevated adrenal inflammation and norepinephrine secretion, concomitant with hypertension. In addition, microbial DNA promoted inflammatory responses and norepinephrine production in rat pheochromocytoma PC12 cells treated with gut mEVs. Depletion of microbial DNA cargo markedly blunted the effects of gut mEVs. We also validated that activation of cGAS (cyclic GMP‐AMP synthase)/STING (cyclic GMP–AMP receptor stimulator of interferon genes) signaling is required for the ability of microbial DNA to trigger adrenomedullary dysfunctions in both in vivo and in vitro experiments. Restoring CRIg+ cells in obese mice decreased microbial DNA abundance, inflammation, and hypertension. Conclusions The leakage of gut mEVs leads to adrenal enrichment of microbial DNA that are pathogenic to induce obesity‐associated adrenomedullary abnormalities and hypertension. Recovering the CRIg+ macrophage population attenuates obesity‐induced adrenomedullary disorders.
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Affiliation(s)
- Hong Gao
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
| | - Zhongmou Jin
- Division of Biological SciencesUniversity of California, San DiegoLa JollaCA
| | | | - Yudong Ji
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
- Department of AnesthesiologyInstitute of Anesthesiology and Critical CareUnion HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
| | - Jorge Suarez
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
| | - Jorge A. Suarez
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
| | - Karina Cunha e Rocha
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
| | - Dinghong Zhang
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
| | - Wolfgang H. Dillmann
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
| | - Sushil K. Mahata
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
- VA San Diego Healthcare SystemSan DiegoCA
| | - Wei Ying
- Division of Endocrinology & MetabolismDepartment of MedicineUniversity of California, San DiegoLa JollaCA
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19
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Gao H, Luo Z, Ji Y, Tang K, Jin Z, Ly C, Sears DD, Mahata S, Ying W. Accumulation of microbial DNAs promotes to islet inflammation and β cell abnormalities in obesity in mice. Nat Commun 2022; 13:565. [PMID: 35091566 PMCID: PMC8799656 DOI: 10.1038/s41467-022-28239-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 01/12/2022] [Indexed: 12/13/2022] Open
Abstract
Various microbial products leaked from gut lumen exacerbate tissue inflammation and metabolic disorders in obesity. Vsig4+ macrophages are key players preventing infiltration of bacteria and their products into host tissues. However, roles of islet Vsig4+ macrophages in the communication between microbiota and β cells in pathogenesis of obesity-associated islet abnormalities are unknown. Here, we find that bacterial DNAs are enriched in β cells of individuals with obesity. Intestinal microbial DNA-containing extracellular vesicles (mEVs) readily pass through obese gut barrier and deliver microbial DNAs into β cells, resulting in elevated inflammation and impaired insulin secretion by triggering cGAS/STING activation. Vsig4+ macrophages prevent mEV infiltration into β cells through a C3-dependent opsonization, whereas loss of Vsig4 leads to microbial DNA enrichment in β cells after mEV treatment. Removal of microbial DNAs blunts mEV effects. Loss of Vsig4+ macrophages leads to microbial DNA accumulation in β cells and subsequently obesity-associated islet abnormalities.
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Affiliation(s)
- Hong Gao
- Division of Endocrinology & Metabolism, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Zhenlong Luo
- Division of Endocrinology & Metabolism, University of California, San Diego, La Jolla, CA, 92093, USA
- Department of Gastroenterology, Tongji Hospital, Tongji medical College, Huazhong University of Science and Technology, 430030, Wuhan, China
| | - Yudong Ji
- Division of Endocrinology & Metabolism, University of California, San Diego, La Jolla, CA, 92093, USA
- Department of Anesthesiology, Institute of Anesthesiology and Critical Care, Union Hospital, Tongji medical College, Huazhong University of Science and Technology, 430022, Wuhan, China
| | - Kechun Tang
- VA San Diego Healthcare System, La Jolla, CA, 92093, USA
| | - Zhongmou Jin
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Crystal Ly
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Dorothy D Sears
- College of Health Solutions, Arizona State University, Phoenix, AZ, 85004, USA
- Department of Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
- Department of Family Medicine, University of California, San Diego, La Jolla, CA, 92093, USA
- Moores Cancer Center, University of California, San Diego, La Jolla, 92093, CA, USA
| | - Sushil Mahata
- Division of Endocrinology & Metabolism, University of California, San Diego, La Jolla, CA, 92093, USA
- VA San Diego Healthcare System, La Jolla, CA, 92093, USA
| | - Wei Ying
- Division of Endocrinology & Metabolism, University of California, San Diego, La Jolla, CA, 92093, USA.
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20
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Reißing J, Lutz P, Frissen M, Ibidapo-Obe O, Reuken PA, Wirtz TH, Stengel S, Quickert S, Rooney M, Große K, Zimmermann HW, Trautwein C, Stallmach A, Bruns T. Immunomodulatory receptor VSIG4 is released during spontaneous bacterial peritonitis and predicts short-term mortality. JHEP REPORTS : INNOVATION IN HEPATOLOGY 2021; 4:100391. [PMID: 34917912 PMCID: PMC8666561 DOI: 10.1016/j.jhepr.2021.100391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 10/01/2021] [Accepted: 10/20/2021] [Indexed: 12/13/2022]
Abstract
Background & Aims V-set Ig-domain-containing 4 (VSIG4) is an immunomodulatory macrophage complement receptor modulating innate and adaptive immunity and affecting the resolution of bacterial infections. Given its expression on peritoneal macrophages (PMs), we hypothesised a prognostic role of peritoneal VSIG4 concentrations in patients with spontaneous bacterial peritonitis (SBP). Methods We isolated PMs from patients with cirrhosis and analysed VSIG4 expression and release by flow cytometry, quantitative real-time PCR, ELISA, and confocal microscopy. We measured soluble VSIG4 concentrations in ascites from 120 patients with SBP and 40 patients without SBP and investigated the association of soluble VSIG4 in ascites with 90-day survival after SBP using Kaplan–Meier statistics, Cox regression, and competing-risks regression analysis. Results VSIG4 expression was high on resting, large PMs, which co-expressed CD206, CD163, and tyrosine-protein kinase Mer (MERTK). VSIG4 gene expression in PMs decreased in patients with SBP and normalised after resolution. During SBP, VSIG4hi PMs were depleted (25% vs. 57%; p <0.001) and soluble VSIG4 in ascites were higher in patients with SBP than in patients without (0.73 vs. 0.35 μg/ml; p <0.0001). PM activation by Toll-like receptor (TLR) agonists or infection with live bacteria in vitro resulted in a loss of surface VSIG4 and the release of soluble VSIG4. Mechanistically, shedding of VSIG4 from PMs was protease-dependent and susceptible to microtubule transport inhibition. Soluble VSIG4 in ascites exceeded serum concentrations and correlated with serum creatinine, model for end-stage liver disease score and C-reactive protein during SBP. Concentrations of 1.0206 μg/ml or higher indicated increased 90-day mortality (hazard ratio 1.70; 95% CI 1.01–2.86; p = 0.046). Conclusions VSIG4 is released from activated PMs into ascites during SBP. Higher peritoneal VSIG4 levels indicate patients with organ failure and poor prognosis. Lay summary Patients with liver cirrhosis who develop ascites have an increased risk of infection and mortality. Our study shows that in patients with infected ascites, the complement receptor VSIG4 is released by resident macrophages into the abdominal fluid where it can be measured. Patients with elevated levels of this protein in ascites are at high risk of dying within 90 days. VSIG4 expression is high on human resting, large peritoneal macrophages (PMs) that co-express CD206, CD163, and MERTK. PM activation by TLR agonists or infection results in the loss of surface VSIG4 and release of soluble VSIG4 (sVSIG4). Ascites sVSIG4 correlates with organ dysfunction and inflammation during SBP. Higher ascitic fluid sVSIG4 concentrations indicated increased risk of 90-day mortality in 120 patients with SBP. Addition of an antibody binding to the extracellular domain of VSIG4 enhanced phagocytosis of bacteria in vitro.
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Key Words
- AF, ascitic fluid
- BSA, bovine serum albumin
- Bacterial infection
- Biomarker
- C3, complement component 3
- CCR2, C-C chemokine receptor type 2
- EEA1, early endosome antigen 1
- FCS, foetal calf serum
- FMO, fluorescence minus one
- HLA-DR, human leucocyte antigen-DR isotype
- IMC, isotype-matched control
- INR, international normalised ratio
- LAMP2, lysosome-associated membrane protein 2
- LPS, lipopolysaccharide
- MACS, magnet-activated cell sorting
- MELD, model for end-stage liver disease
- MERTK, tyrosine-protein kinase Mer
- MFI, median fluorescence intensity
- MMP, matrix metalloproteinase
- MOI, multiplicity of infection
- MPLA, monophosphoryl lipid A
- PAMP, pathogen-associated molecular pattern
- PD-L1, programmed cell death 1 ligand 1
- PFA, paraformaldehyde
- PM, peritoneal macrophage
- Prognostic factor
- Risk of death
- SBP, spontaneous bacterial peritonitis
- TAPI-2, tumour necrosis factor protease inhibitor 2
- TLR, Toll-like receptor
- TNF, tumour necrosis factor
- VSIG4, V-set Ig-domain-containing 4
- qRT-PCR, quantitative real-time PCR
- sVSIG4, soluble V-set Ig-domain-containing 4
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Affiliation(s)
- Johanna Reißing
- Department of Internal Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Philipp Lutz
- Department of Internal Medicine I, University of Bonn, Bonn, Germany
- German Center for Infection Research, University of Bonn, Bonn, Germany
| | - Mick Frissen
- Department of Internal Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Oluwatomi Ibidapo-Obe
- Department of Internal Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Philipp A. Reuken
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
| | - Theresa H. Wirtz
- Department of Internal Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Sven Stengel
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
| | - Stefanie Quickert
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
| | - Michael Rooney
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
| | - Karsten Große
- Department of Internal Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Henning W. Zimmermann
- Department of Internal Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Christian Trautwein
- Department of Internal Medicine III, University Hospital RWTH Aachen, Aachen, Germany
| | - Andreas Stallmach
- Department of Internal Medicine IV (Gastroenterology, Hepatology, and Infectious Diseases), Jena University Hospital, Jena, Germany
| | - Tony Bruns
- Department of Internal Medicine III, University Hospital RWTH Aachen, Aachen, Germany
- Corresponding author. Address: Department of Internal Medicine III, University Hospital RWTH Aachen, Pauwelsstraße 30, 52074 Aachen, Germany. Tel.: +49-241-80-80-866; Fax: +49-3641-9-32-42-22
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21
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Duan Y, Chu H, Brandl K, Jiang L, Zeng S, Meshgin N, Papachristoforou E, Argemi J, Mendes BG, Wang Y, Su H, Sun W, Llorente C, Hendrikx T, Liu X, Hosseini M, Kisseleva T, Brenner DA, Bataller R, Ramachandran P, Karin M, Fu W, Schnabl B. CRIg on liver macrophages clears pathobionts and protects against alcoholic liver disease. Nat Commun 2021; 12:7172. [PMID: 34887405 PMCID: PMC8660815 DOI: 10.1038/s41467-021-27385-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 11/15/2021] [Indexed: 12/19/2022] Open
Abstract
Complement receptor of immunoglobulin superfamily (CRIg) is expressed on liver macrophages and directly binds complement component C3b or Gram-positive bacteria to mediate phagocytosis. CRIg plays important roles in several immune-mediated diseases, but it is not clear how its pathogen recognition and phagocytic functions maintain homeostasis and prevent disease. We previously associated cytolysin-positive Enterococcus faecalis with severity of alcohol-related liver disease. Here, we demonstrate that CRIg is reduced in liver tissues from patients with alcohol-related liver disease. CRIg-deficient mice developed more severe ethanol-induced liver disease than wild-type mice; disease severity was reduced with loss of toll-like receptor 2. CRIg-deficient mice were less efficient than wild-type mice at clearing Gram-positive bacteria such as Enterococcus faecalis that had translocated from gut to liver. Administration of the soluble extracellular domain CRIg-Ig protein protected mice from ethanol-induced steatohepatitis. Our findings indicate that ethanol impairs hepatic clearance of translocated pathobionts, via decreased hepatic CRIg, which facilitates progression of liver disease.
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Affiliation(s)
- Yi Duan
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA ,grid.410371.00000 0004 0419 2708Department of Medicine, VA San Diego Healthcare System, San Diego, CA USA
| | - Huikuan Chu
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA ,grid.33199.310000 0004 0368 7223Division of Gastroenterology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1277 Jiefang Avenue, 430022 Wuhan, China
| | - Katharina Brandl
- grid.266100.30000 0001 2107 4242Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA USA
| | - Lu Jiang
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA ,grid.410371.00000 0004 0419 2708Department of Medicine, VA San Diego Healthcare System, San Diego, CA USA
| | - Suling Zeng
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA ,grid.410371.00000 0004 0419 2708Department of Medicine, VA San Diego Healthcare System, San Diego, CA USA
| | - Nairika Meshgin
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA
| | - Eleni Papachristoforou
- grid.511172.10000 0004 0613 128XUniversity of Edinburgh Centre for Inflammation Research, The Queen’s Medical Research Institute, Edinburgh BioQuarter, Edinburgh, UK
| | - Josepmaria Argemi
- grid.412689.00000 0001 0650 7433Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh Liver Research Center, Pittsburgh, PA USA ,grid.5924.a0000000419370271Hepatology Program, Centro de Investigacion Medica Aplicada (CIMA), Liver Unit, Clinica Universidad de Navarra (CUN), Instituto de Investigacion de Navarra (IdisNA), University of Navarra, Pamplona, Spain
| | - Beatriz G. Mendes
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA
| | - Yanhan Wang
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA ,grid.410371.00000 0004 0419 2708Department of Medicine, VA San Diego Healthcare System, San Diego, CA USA
| | - Hua Su
- grid.266100.30000 0001 2107 4242Laboratory of Gene Regulation and Signal Transduction, Departments of Pharmacology and Pathology, School of Medicine, University of California San Diego, La Jolla, CA USA
| | - Weizhong Sun
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA
| | - Cristina Llorente
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA
| | - Tim Hendrikx
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA
| | - Xiao Liu
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA ,grid.266100.30000 0001 2107 4242Department of Surgery, University of California San Diego, La Jolla, CA USA
| | - Mojgan Hosseini
- grid.266100.30000 0001 2107 4242Department of Pathology, University of California San Diego, La Jolla, CA USA
| | - Tatiana Kisseleva
- grid.266100.30000 0001 2107 4242Department of Surgery, University of California San Diego, La Jolla, CA USA
| | - David A. Brenner
- grid.266100.30000 0001 2107 4242Department of Medicine, University of California San Diego, La Jolla, CA USA
| | - Ramon Bataller
- grid.412689.00000 0001 0650 7433Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh Liver Research Center, Pittsburgh, PA USA
| | - Prakash Ramachandran
- grid.511172.10000 0004 0613 128XUniversity of Edinburgh Centre for Inflammation Research, The Queen’s Medical Research Institute, Edinburgh BioQuarter, Edinburgh, UK
| | - Michael Karin
- grid.266100.30000 0001 2107 4242Laboratory of Gene Regulation and Signal Transduction, Departments of Pharmacology and Pathology, School of Medicine, University of California San Diego, La Jolla, CA USA
| | - Wenxian Fu
- grid.266100.30000 0001 2107 4242Department of Pediatrics, University of California San Diego, La Jolla, CA USA ,grid.418158.10000 0004 0534 4718Department of Cancer Immunology, Genentech, South San Francisco, CA USA
| | - Bernd Schnabl
- Department of Medicine, University of California San Diego, La Jolla, CA, USA. .,Department of Medicine, VA San Diego Healthcare System, San Diego, CA, USA.
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22
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He Z, Li J, Gong S, Xing L, Sun Y, Wang J, Li T, Ning N, Zhang L, Yu W, Luo D, Wang H. B7 Family Molecule VSIG4 Regulates Intestinal Anti- Enterohemorrhagic Escherichia coli Immunity by Altering Gut Flora Diversity. Microorganisms 2021; 9:microorganisms9081769. [PMID: 34442848 PMCID: PMC8398431 DOI: 10.3390/microorganisms9081769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 08/04/2021] [Accepted: 08/16/2021] [Indexed: 11/16/2022] Open
Abstract
As an essential member of the B7 family, V-set and immunoglobulin domain-containing 4 (VSIG4) is expressed explicitly in tissue-resident macrophages (TRMs) and plays an essential role in maintaining the homeostasis of the environmental immune system. Here, we demonstrate that gene-targeted VSIG4-deficient mice infected with Enterohemorrhagic Escherichia coli (EHEC) display reduced bacterial burden. To reveal the role of VSIG4 in the fight against EHEC infection, we collected mice feces and used high-throughput 16S rRNA gene amplicons to detect changes in the flora. A total of 657330 sequences were sequenced on the PacBio platform, with an average length of 1498 bp. We found that VSIG4 deficiency could alter the gut microbiota by increasing diversity and shifting community composition. In particular, G_Akkermansia and G_Oscillo spiraceae increased significantly. These findings expand upon a prior observation that VSIG4 deficiency reduced EHEC colonization by changing the gut microbiota diversity and shifting community composition.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Deyan Luo
- Correspondence: (D.L.); (H.W.); Tel.: +86-10-66948549 (H.W.)
| | - Hui Wang
- Correspondence: (D.L.); (H.W.); Tel.: +86-10-66948549 (H.W.)
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23
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Chen XN, Ge QH, Zhao YX, Guo XC, Zhang JP. Effect of Si-Miao-Yong-An decoction on the differentiation of monocytes, macrophages, and regulatory T cells in ApoE -/- mice. JOURNAL OF ETHNOPHARMACOLOGY 2021; 276:114178. [PMID: 33945857 DOI: 10.1016/j.jep.2021.114178] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 04/03/2021] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Si-Miao-Yong-An decoction (SMYAD) is a renowned traditional Chinese medicinal formula. SMYAD was originally recorded in the "Shi Shi Mi Lu", which was edited by medical scientist Chen Shi'duo during the Qing Dynasty. SMYAD has been traditionally used to treat thromboangiitis obliterans. At present, it is mainly used in clinical applications and research of cardiovascular diseases. AIM OF THE STUDY To explore the effects of SMYAD on the pathological changes of atherosclerosis (AS) and the differentiation of monocytes, macrophages, and regulatory T (Treg) cells in apolipoprotein E knockout (ApoE-/-) mice. MATERIALS AND METHODS Eight C57BL/6J mice, which were fed with normal diet for 16 weeks, were used as control group. Forty ApoE-/- mice were randomly divided into model group, atorvastatin group, SMYAD low-dose (SMYAD-LD) group, SMYAD medium-dose (SMYAD-MD) group, and SMYAD high-dose (SMYAD-HD) group. ApoE-/- mice were fed with western diet (WD) for 8 weeks, and the drugs were continuously administered for 8 weeks. The levels of serum total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and high-density lipoprotein cholesterol (HDL-C) were measured by the esterase method. Morphological changes of the aortic sinus in mice were observed by hematoxylin-eosin (HE) staining, the lipid infiltration of the aorta and aortic sinus were observed by oil red O staining, and the spleen index was calculated. The proportion of Ly6Chigh and Ly6Clow monocyte subsets, macrophages, and their M1 phenotype, as well as Treg cells in spleen were measured by flow cytometry. The expressions of cluster of differentiation 36 (CD36), scavenger receptor A1 (SRA1), lectin-like oxidized low-density lipoprotein receptor-1 (LOX-1), F4/80, and fork head frame protein 3 (FOXP3) in aortic sinus were assessed by immunohistochemical staining. The serum levels of oxidized low density lipoprotein (ox-LDL), interleukin-1β (IL-1β), IL-18, transforming growth factor-β (TGF-β), and IL-10 were measured by enzyme-linked immunosorbent assays (ELISA). RESULTS Compared with the model group, the level of serum TC and LDL-C decreased in the SMYAD group, the pathological changes of aortic sinus decreased, and lipid infiltration of aorta and aortic sinus also decreased. These decreases were accompanied by a significant downregulation of CD36, SRA1, and LOX-1. Furthermore, the proportions of Ly6Chigh pro-inflammatory monocyte subsets, macrophages, and their M1 phenotypes in spleen decreased significantly, while the proportion of Treg cells increased. In addition, while the expression of F4/80 decreased, the expression of FOXP3 increased in the aorta sinus. The levels of serum pro-inflammatory factors IL-1β and IL-18 decreased. CONCLUSIONS SMYAD can improve the pathological changes associated with AS and can inhibit lipid deposition in ApoE-/- mice induced by WD diet. The likely mechanism is the inhibition of the differentiation and recruitment of monocytes and macrophages, the promotion of the differentiation and recruitment of Treg cells, as well as the reduction of the secretion of pro-inflammatory factors.
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MESH Headings
- Animals
- Aorta/metabolism
- Aorta/pathology
- Apolipoproteins E/genetics
- CD36 Antigens/metabolism
- Calcium-Binding Proteins/metabolism
- Carrier Proteins/metabolism
- Cell Differentiation/drug effects
- Cholesterol/blood
- Cholesterol, HDL/blood
- Cholesterol, LDL/blood
- Cytokines/blood
- Drugs, Chinese Herbal/pharmacology
- Drugs, Chinese Herbal/therapeutic use
- Forkhead Transcription Factors/metabolism
- Lipoproteins, LDL/blood
- Macrophages/drug effects
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Monocytes/drug effects
- Plaque, Atherosclerotic/drug therapy
- Plaque, Atherosclerotic/metabolism
- Plaque, Atherosclerotic/pathology
- Receptors, G-Protein-Coupled/metabolism
- Scavenger Receptors, Class E/metabolism
- Spleen/drug effects
- Spleen/metabolism
- T-Lymphocytes, Regulatory/drug effects
- Triglycerides/blood
- Mice
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Affiliation(s)
- Xin-Nong Chen
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China; Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Qi-Hui Ge
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China; Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yi-Xuan Zhao
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China; Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiao-Chen Guo
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jun-Ping Zhang
- Department of Cardiology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.
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24
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Sutherland TE, Shaw TN, Lennon R, Herrick SE, Rückerl D. Ongoing Exposure to Peritoneal Dialysis Fluid Alters Resident Peritoneal Macrophage Phenotype and Activation Propensity. Front Immunol 2021; 12:715209. [PMID: 34386014 PMCID: PMC8353194 DOI: 10.3389/fimmu.2021.715209] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 07/09/2021] [Indexed: 01/22/2023] Open
Abstract
Peritoneal dialysis (PD) is a more continuous alternative to haemodialysis, for patients with chronic kidney disease, with considerable initial benefits for survival, patient independence and healthcare costs. However, long-term PD is associated with significant pathology, negating the positive effects over haemodialysis. Importantly, peritonitis and activation of macrophages is closely associated with disease progression and treatment failure. However, recent advances in macrophage biology suggest opposite functions for macrophages of different cellular origins. While monocyte-derived macrophages promote disease progression in some models of fibrosis, tissue resident macrophages have rather been associated with protective roles. Thus, we aimed to identify the relative contribution of tissue resident macrophages to PD induced inflammation in mice. Unexpectedly, we found an incremental loss of homeostatic characteristics, anti-inflammatory and efferocytic functionality in peritoneal resident macrophages, accompanied by enhanced inflammatory responses to external stimuli. Moreover, presence of glucose degradation products within the dialysis fluid led to markedly enhanced inflammation and almost complete disappearance of tissue resident cells. Thus, alterations in tissue resident macrophages may render long-term PD patients sensitive to developing peritonitis and consequently fibrosis/sclerosis.
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Affiliation(s)
- Tara E. Sutherland
- Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, United Kingdom
- Manchester Collaborative Centre for Inflammation Research (MCCIR), University of Manchester, Manchester, United Kingdom
- Wellcome Centre for Cell-Matrix Research, University of Manchester, Manchester, United Kingdom
| | - Tovah N. Shaw
- Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, United Kingdom
- Manchester Collaborative Centre for Inflammation Research (MCCIR), University of Manchester, Manchester, United Kingdom
- Institute of Immunology and Infection Research, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
| | - Rachel Lennon
- Wellcome Centre for Cell-Matrix Research, University of Manchester, Manchester, United Kingdom
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Sarah E. Herrick
- Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, United Kingdom
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Dominik Rückerl
- Lydia Becker Institute of Immunology and Inflammation, Faculty of Biology, Medicine and Health, Division of Infection, Immunity and Respiratory Medicine, University of Manchester, Manchester, United Kingdom
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25
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Kim SW, Roh J, Lee HS, Ryu MH, Park YS, Park CS. Expression of the immune checkpoint molecule V-set immunoglobulin domain-containing 4 is associated with poor prognosis in patients with advanced gastric cancer. Gastric Cancer 2021; 24:327-340. [PMID: 32924090 DOI: 10.1007/s10120-020-01120-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Accepted: 09/03/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Recent clinical studies on immune checkpoint (IC) inhibitors in the context of advanced gastric cancer (AGC) have failed to show significant survival benefits but have suggested the possible role of IC inhibitors in anti-AGC immunity. Considering the low efficacy of targeted drugs in AGC, there is an urgent need for the discovery of new targets for the development of immunotherapeutics and prognostic markers for patient selection. This study aimed to investigate the expression of a new IC molecule, V-set Ig domain-containing 4 (VSIG4), and its clinical significance in AGC and other major cancers. METHODS We analyzed the expression of VSIG4 and its correlation with survival in various carcinomas, including 882 surgically resected samples from patients with stage II-III AGC (two academic hospitals). RESULTS VSIG4 positivity in AGC was significantly associated with overall survival (OS; Hazard ratio (HR) = 2.661, 95% confidence interval [CI] = 2.012-3.519, P < 0.001) and event-free survival (HR = 2.8, 95% CI = 2.18-3.72, P < 0.001). These findings were successfully validated in independent cohorts. VSIG4 expression was also significantly correlated with low intratumoral CD8 + T-cell infiltration (CD8i) (P = 0.029) and high Foxp3 + /CD8i ratio (P = 0.026), which is consistent with the previously reported immunological function of VSIG4. However, VSIG4 expression was not associated with survival in other cancers (colon, P = 0.459; lung, P = 0.275; kidney, P = 0.121; breast, P = 0.147). CONCLUSION Our results suggest that VSIG4 is an independent prognostic factor in AGC and also implies that VSIG4 is a second-tier IC molecule in AGC, thus, providing an important basis for the development of gastric cancer-specific immunotherapeutics.
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Affiliation(s)
- So-Woon Kim
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.,Department of Pathology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Republic of Korea
| | - Jin Roh
- Department of Pathology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Hye Seung Lee
- Department of Pathology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Min-Hee Ryu
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Young-Soo Park
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.
| | - Chan-Sik Park
- Department of Pathology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.
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26
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Vandendriessche S, Cambier S, Proost P, Marques PE. Complement Receptors and Their Role in Leukocyte Recruitment and Phagocytosis. Front Cell Dev Biol 2021; 9:624025. [PMID: 33644062 PMCID: PMC7905230 DOI: 10.3389/fcell.2021.624025] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 01/15/2021] [Indexed: 12/21/2022] Open
Abstract
The complement system is deeply embedded in our physiology and immunity. Complement activation generates a multitude of molecules that converge simultaneously on the opsonization of a target for phagocytosis and activation of the immune system via soluble anaphylatoxins. This response is used to control microorganisms and to remove dead cells, but also plays a major role in stimulating the adaptive immune response and the regeneration of injured tissues. Many of these effects inherently depend on complement receptors expressed on leukocytes and parenchymal cells, which, by recognizing complement-derived molecules, promote leukocyte recruitment, phagocytosis of microorganisms and clearance of immune complexes. Here, the plethora of information on the role of complement receptors will be reviewed, including an analysis of how this functionally and structurally diverse group of molecules acts jointly to exert the full extent of complement regulation of homeostasis.
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Affiliation(s)
- Sofie Vandendriessche
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Seppe Cambier
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Paul Proost
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
| | - Pedro E Marques
- Laboratory of Molecular Immunology, Department of Microbiology, Immunology and Transplantation, Rega Institute for Medical Research, Katholieke Universiteit Leuven (KU Leuven), Leuven, Belgium
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27
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Sánchez-Sarasúa S, Ribes-Navarro A, Beltrán-Bretones MT, Sánchez-Pérez AM. AAV delivery of shRNA against IRS1 in GABAergic neurons in rat hippocampus impairs spatial memory in females and male rats. Brain Struct Funct 2020; 226:163-178. [PMID: 33245394 DOI: 10.1007/s00429-020-02155-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 10/06/2020] [Indexed: 12/25/2022]
Abstract
Brain insulin resistance is a major factor leading to impaired cognitive function and it is considered as the onset of Alzheimer´s disease. Insulin resistance is intimately linked to inflammatory conditions, many studies have revealed how pro-inflammatory cytokines lead to insulin resistance, by inhibiting IRS1 function. Thus, the dysfunction of insulin signaling is concomitant with inflammatory biomarkers. However, the specific effect of IRS1 impaired function in otherwise healthy brain has not been dissected out. So, we decided in our study, to study the specific role of IRS1 in the hippocampus, in the absence of comorbidities. To that end, shRNA against rat and human IRS1 was designed and tested in cultured HEK cells to evaluate mRNA levels and specificity. The best candidate sequence was encapsulated in an AAV vector (strain DJ8) under the control of the cytomegalovirus promoter and together with the green fluorescent protein gene as a reporter. AAV-CMV-shIRS1-EGFP and control AAV-CMV-EGFP were inoculated into the dorsal hippocampus of female and male Wistar rats. One month later, animals undertook a battery of behavioral paradigms evaluating spatial and social memory and anxiety. Our results suggest that females displayed increased susceptibility to AAV-shIRS1 in the novel recognition object paradigm; whereas both females and males show impaired performance in the T maze when infected with AAV-shIRS1 compared to control. Anxiety parameters were not affected by AAV-shIRS1 infection. We observed specific fluorescence within the hilum of the dentate gyrus, in immuno-characterized parvalbumin and somatostatin neurons. AAV DJ8 did not enter astrocytes. Intense green fibers were found in the fornix, mammillary bodies, and in the medial septum indicating that hippocampal efferent had been efficiently targeted by the AAV DJ8 infection. We observed that AAV-shIRS1 reduced significantly synaptophysin labeling in hippocampal-septal projections compared to controls. These results support that, small alterations in the insulin/IGF1 pathway in specific hippocampal circuitries can underlie alterations in synaptic plasticity and affect behavior, in the absence of inflammatory conditions.
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Affiliation(s)
| | - Alberto Ribes-Navarro
- Department of Medicine, Universitat Jaume I, Castellón, Spain.,Instituto de Acuicultura de Torre de la Sal (IATS-CSIC), 12595 Ribera de Cabanes, Castellón, Spain
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28
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Ochoa‐Hueso R, Arca V, Delgado‐Baquerizo M, Hamonts K, Piñeiro J, Serrano‐Grijalva L, Shawyer J, Power SA. Links between soil microbial communities, functioning, and plant nutrition under altered rainfall in Australian grassland. ECOL MONOGR 2020. [DOI: 10.1002/ecm.1424] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Raúl Ochoa‐Hueso
- Department of Biology IVAGROUniversity of Cádiz Campus de Excelencia Internacional Agroalimentario (ceiA3), Campus del Rio San Pedro Puerto Real Cádiz 11510 Spain
- Hawkesbury Institute for the EnvironmentWestern Sydney University Locked Bag 1797 Penrith New South Wales2751 Australia
| | - Valentina Arca
- Hawkesbury Institute for the EnvironmentWestern Sydney University Locked Bag 1797 Penrith New South Wales2751 Australia
| | - Manuel Delgado‐Baquerizo
- Hawkesbury Institute for the EnvironmentWestern Sydney University Locked Bag 1797 Penrith New South Wales2751 Australia
- Departamento de Sistemas Físicos, Químicos y Naturales Universidad Pablo de Olavide Sevilla 41013 Spain
| | - Kelly Hamonts
- Hawkesbury Institute for the EnvironmentWestern Sydney University Locked Bag 1797 Penrith New South Wales2751 Australia
| | - Juan Piñeiro
- Hawkesbury Institute for the EnvironmentWestern Sydney University Locked Bag 1797 Penrith New South Wales2751 Australia
- Division of Plant and Soil Sciences West Virginia University Morgantown West Virginia 26506 USA
| | - Lilia Serrano‐Grijalva
- Department of Biology IVAGROUniversity of Cádiz Campus de Excelencia Internacional Agroalimentario (ceiA3), Campus del Rio San Pedro Puerto Real Cádiz 11510 Spain
- Hawkesbury Institute for the EnvironmentWestern Sydney University Locked Bag 1797 Penrith New South Wales2751 Australia
| | - Julien Shawyer
- Hawkesbury Institute for the EnvironmentWestern Sydney University Locked Bag 1797 Penrith New South Wales2751 Australia
| | - Sally A. Power
- Hawkesbury Institute for the EnvironmentWestern Sydney University Locked Bag 1797 Penrith New South Wales2751 Australia
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29
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Hall BM, Gleiberman AS, Strom E, Krasnov PA, Frescas D, Vujcic S, Leontieva OV, Antoch MP, Kogan V, Koman IE, Zhu Y, Tchkonia T, Kirkland JL, Chernova OB, Gudkov AV. Immune checkpoint protein VSIG4 as a biomarker of aging in murine adipose tissue. Aging Cell 2020; 19:e13219. [PMID: 32856419 PMCID: PMC7576241 DOI: 10.1111/acel.13219] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Revised: 05/26/2020] [Accepted: 07/03/2020] [Indexed: 12/20/2022] Open
Abstract
Adipose tissue is recognized as a major source of systemic inflammation with age, driving age-related tissue dysfunction and pathogenesis. Macrophages (Mφ) are central to these changes yet adipose tissue Mφ (ATMs) from aged mice remain poorly characterized. To identify biomarkers underlying changes in aged adipose tissue, we performed an unbiased RNA-seq analysis of ATMs from young (8-week-old) and healthy aged (80-week-old) mice. One of the genes identified, V-set immunoglobulin-domain-containing 4 (VSIG4/CRIg), encodes a Mφ-associated complement receptor and B7 family-related immune checkpoint protein. Here, we demonstrate that Vsig4 expression is highly upregulated with age in perigonadal white adipose tissue (gWAT) in two mouse strains (inbred C57BL/6J and outbred NIH Swiss) independent of gender. The accumulation of VSIG4 was mainly attributed to a fourfold increase in the proportion of VSIG4+ ATMs (13%-52%). In a longitudinal study, VSIG4 expression in gWAT showed a strong correlation with age within a cohort of male and female mice and correlated strongly with physiological frailty index (PFI, a multi-parameter assessment of health) in male mice. Our results indicate that VSIG4 is a novel biomarker of aged murine ATMs. VSIG4 expression was also found to be elevated in other aging tissues (e.g., thymus) and was strongly induced in tumor-adjacent stroma in cases of spontaneous and xenograft lung cancer models. VSIG4 expression was recently associated with cancer and several inflammatory diseases with diagnostic and prognostic potential in both mice and humans. Further investigation is required to determine whether VSIG4-positive Mφ contribute to immunosenescence and/or systemic age-related deficits.
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Affiliation(s)
| | | | | | | | | | | | - Olga V. Leontieva
- Department of Pharmacology and TherapeuticsRoswell Park Comprehensive Cancer CenterBuffaloNYUSA
| | - Marina P. Antoch
- Department of Pharmacology and TherapeuticsRoswell Park Comprehensive Cancer CenterBuffaloNYUSA
| | - Valeria Kogan
- Institute for Translational ResearchAriel UniversityArielIsrael
| | - Igor E. Koman
- Institute for Translational ResearchAriel UniversityArielIsrael
| | - Yi Zhu
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | - Tamara Tchkonia
- Robert and Arlene Kogod Center on AgingMayo ClinicRochesterMNUSA
| | | | | | - Andrei V. Gudkov
- Everon Biosciences IncBuffaloNYUSA
- Department of Cell Stress BiologyRoswell Park Comprehensive Cancer CenterBuffaloNYUSA
- Genome Protection IncBuffaloNYUSA
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30
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Guo J, Fu W. Immune regulation of islet homeostasis and adaptation. J Mol Cell Biol 2020; 12:764-774. [PMID: 32236479 PMCID: PMC7816675 DOI: 10.1093/jmcb/mjaa009] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/08/2020] [Accepted: 01/13/2020] [Indexed: 02/06/2023] Open
Abstract
The islet of Langerhans produces endocrine hormones to regulate glucose homeostasis. The normal function of the islet relies on the homeostatic regulations of cellular composition and cell–cell interactions within the islet microenvironment. Immune cells populate the islet during embryonic development and participate in islet organogenesis and function. In obesity, a low-grade inflammation manifests in multiple organs, including pancreatic islets. Obesity-associated islet inflammation is evident in both animal models and humans, characterized by the accumulation of immune cells and elevated production of inflammatory cytokines/chemokines and metabolic mediators. Myeloid lineage cells (monocytes and macrophages) are the dominant types of immune cells in islet inflammation during the development of obesity and type 2 diabetes mellitus (T2DM). In this review, we will discuss the role of the immune system in islet homeostasis and inflammation and summarize recent findings of the cellular and molecular factors that alter islet microenvironment and β cell function in obesity and T2DM.
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Affiliation(s)
- Jinglong Guo
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
| | - Wenxian Fu
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California San Diego, 9500 Gilman Drive, La Jolla, CA 92093, USA
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31
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Yang BH, Wang K, Wan S, Liang Y, Yuan X, Dong Y, Cho S, Xu W, Jepsen K, Feng GS, Lu LF, Xue HH, Fu W. TCF1 and LEF1 Control Treg Competitive Survival and Tfr Development to Prevent Autoimmune Diseases. Cell Rep 2020; 27:3629-3645.e6. [PMID: 31216480 PMCID: PMC6701704 DOI: 10.1016/j.celrep.2019.05.061] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 04/26/2019] [Accepted: 05/17/2019] [Indexed: 12/22/2022] Open
Abstract
CD4+ Foxp3+ T regulatory (Treg) cells are key players in preventing lethal autoimmunity. Tregs undertake differentiation processes and acquire diverse functional properties. However, how Treg’s differentiation and functional specification are regulated remains incompletely understood. Here, we report that gradient expression of TCF1 and LEF1 distinguishes Tregs into three distinct subpopulations, particularly highlighting a subset of activated Treg (aTreg) cells. Treg-specific ablation of TCF1 and LEF1 renders the mice susceptible to systemic autoimmunity. TCF1 and LEF1 are dispensable for Treg’s suppressive capacity but essential for maintaining a normal aTreg pool and promoting Treg’s competitive survival. As a consequence, the development of T follicular regulatory (Tfr) cells, which are a subset of aTreg, is abolished in TCF1/LEF1-conditional knockout mice, leading to unrestrained T follicular helper (Tfh) and germinal center B cell responses. Thus, TCF1 and LEF1 act redundantly to control the maintenance and functional specification of Treg subsets to prevent autoimmunity. Transcriptional regulation of Treg differentiation and function remains incompletely understood. Yang et al. report that two TCF family transcription factors regulate the survival and functional specification of a subset of Treg cells to prevent autoimmunity.
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Affiliation(s)
- Bi-Huei Yang
- Pediatric Diabetes Research Center, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Ke Wang
- Pediatric Diabetes Research Center, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Shuo Wan
- Pediatric Diabetes Research Center, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA; Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou 510080, China
| | - Yan Liang
- Department of Pathology, University of California, San Diego, La Jolla, CA, USA; PhD Program, Biological Sciences, University of California, San Diego, La Jolla, CA, USA
| | - Xiaomei Yuan
- Pediatric Diabetes Research Center, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Yi Dong
- Pediatric Diabetes Research Center, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Sunglim Cho
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA, USA
| | - Wanqing Xu
- Pediatric Diabetes Research Center, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA
| | - Kristen Jepsen
- Institute for Genomic Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Gen-Sheng Feng
- Department of Pathology, University of California, San Diego, La Jolla, CA, USA; Division of Biological Sciences, University of California, San Diego, La Jolla, CA, USA; Moores Cancer Center, University of California, San Diego, La Jolla, CA, USA
| | - Li-Fan Lu
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA, USA; Moores Cancer Center, University of California, San Diego, La Jolla, CA, USA
| | - Hai-Hui Xue
- Department of Microbiology and Immunology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA; Iowa City Veterans Affairs Health Care System, Iowa City, IA 52246, USA.
| | - Wenxian Fu
- Pediatric Diabetes Research Center, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA; Moores Cancer Center, University of California, San Diego, La Jolla, CA, USA.
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32
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Hong YQ, Wan B, Li XF. Macrophage regulation of graft- vs-host disease. World J Clin Cases 2020; 8:1793-1805. [PMID: 32518770 PMCID: PMC7262718 DOI: 10.12998/wjcc.v8.i10.1793] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 04/08/2020] [Accepted: 04/21/2020] [Indexed: 02/05/2023] Open
Abstract
Hematopoietic stem cell transplantation has become a curative choice of many hematopoietic malignancy, but graft-vs-host disease (GVHD) has limited the survival quality and overall survival of hematopoietic stem cell transplantation. Understanding of the immune cells’ reaction in pathophysiology of GVHD has improved, but a review on the role of macrophages in GVHD is still absent. Studies have observed that macrophage infiltration is associated with GVHD occurrence and development. In this review, we summarize and analyze the role of macrophages in GVHD based on pathophysiology of acute and chronic GVHD, focusing on the macrophage recruitment and infiltration, macrophage polarization, macrophage secretion, and especially interaction of macrophages with other immune cells. We could conclude that macrophage recruitment and infiltration contribute to both acute and chronic GVHD. Based on distinguishing pathology of acute and chronic GVHD, macrophages tend to show a higher M1/M2 ratio in acute GVHD and a lower M1/M2 ratio in chronic GVHD. However, the influence of dominant cytokines in GVHD is controversial and inconsistent with macrophage polarization. In addition, interaction of macrophages with alloreactive T cells plays an important role in acute GVHD. Meanwhile, the interaction among macrophages, B cells, fibroblasts, and CD4+ T cells participates in chronic GVHD development.
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Affiliation(s)
- Ya-Qun Hong
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Department of Hematology, Fujian Medical University Union Hospital, Fuzhou 350000, Fujian Province, China
| | - Bo Wan
- Faculty of Life Sciences and Medicine, King’s College London, London WC1N 3BG, United Kingdom
| | - Xiao-Fan Li
- Fujian Institute of Hematology, Fujian Provincial Key Laboratory on Hematology, Department of Hematology, Fujian Medical University Union Hospital, Fuzhou 350000, Fujian Province, China
- INSERM U1160, Hospital Saint Louis, Université Paris Diderot, Paris 94430, France
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33
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Ding Q, Dong S, Wang R, Zhang K, Wang H, Zhou X, Wang J, Wong K, Long Y, Zhu S, Wang W, Ren H, Zeng Y. A nine-gene signature related to tumor microenvironment predicts overall survival with ovarian cancer. Aging (Albany NY) 2020; 12:4879-4895. [PMID: 32208363 PMCID: PMC7138578 DOI: 10.18632/aging.102914] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Accepted: 03/02/2020] [Indexed: 12/13/2022]
Abstract
Mounting evidence suggests that immune cell infiltration within the tumor microenvironment (TME) is a crucial regulator of carcinogenesis and therapeutic efficacy in ovarian cancer (OC). In this study, 593 OC patients from TCGA were divided into high and low score groups based on their immune/stromal scores resulting from analysis utilizing the ESTIMATE algorithm. Differential expression analysis revealed 294 intersecting genes that influencing both the immune and stromal scores. Further Cox regression analysis identified 34 differentially expressed genes (DEGs) as prognostic-related genes. Finally, the nine-gene signature was derived from the prognostic-related genes using a Least Absolute Shrinkage and Selection Operator (LASSO) and Cox regression. This nine-gene signature could effectively distinguish the high-risk patients in the training (TCGA database) and validation (GSE17260) cohorts (all p < 0.01). A time-dependent receiver operating characteristic (ROC) analysis showed that the nine-gene signature had a reasonable predictive accuracy (AUC = 0.707, AUC =0.696) in both cohorts. In addition, this nine-gene signature is associated with immune infiltration in TME by Gene Set Variation Analysis (GSVA), and can be used to predict the survival of patients with OC.
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Affiliation(s)
- Qi Ding
- Translational Medicine Center, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China.,Engineering Technology Research Center for Diagnosis-Treatment and Application of Tumor Liquid Biopsy, Changsha, China
| | - Shanshan Dong
- Translational Medicine Center, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China.,Engineering Technology Research Center for Diagnosis-Treatment and Application of Tumor Liquid Biopsy, Changsha, China
| | - Ranran Wang
- Translational Medicine Center, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China.,Engineering Technology Research Center for Diagnosis-Treatment and Application of Tumor Liquid Biopsy, Changsha, China
| | - Keqiang Zhang
- The Fifth Department of Gynecological Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China
| | - Hui Wang
- Key Laboratory of Radiation Oncology, Department of Radiation Oncology, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Xiao Zhou
- Translational Medicine Center, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China.,Engineering Technology Research Center for Diagnosis-Treatment and Application of Tumor Liquid Biopsy, Changsha, China
| | - Jing Wang
- The Fifth Department of Gynecological Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China
| | - Kee Wong
- Engineering Technology Research Center for Diagnosis-Treatment and Application of Tumor Liquid Biopsy, Changsha, China
| | - Ying Long
- Translational Medicine Center, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China
| | - Shuai Zhu
- Translational Medicine Center, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China
| | - Weigang Wang
- The Fifth Department of Gynecological Oncology, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China
| | - Huayi Ren
- Translational Medicine Center, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China
| | - Yong Zeng
- Translational Medicine Center, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University/Hunan Cancer Hospital, Changsha, China.,Engineering Technology Research Center for Diagnosis-Treatment and Application of Tumor Liquid Biopsy, Changsha, China
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34
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Munawara U, Perveen K, Small AG, Putty T, Quach A, Gorgani NN, Hii CS, Abbott CA, Ferrante A. Human Dendritic Cells Express the Complement Receptor Immunoglobulin Which Regulates T Cell Responses. Front Immunol 2019; 10:2892. [PMID: 31921153 PMCID: PMC6914870 DOI: 10.3389/fimmu.2019.02892] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 11/25/2019] [Indexed: 01/09/2023] Open
Abstract
The B7 family-related protein V-set and Ig containing 4 (VSIG4), also known as Z39Ig and Complement Immunoglobulin Receptor (CRIg), is the most recent of the complement receptors to be identified, with substantially distinct properties from the classical complement receptors. The receptor displays both phagocytosis-promoting and anti-inflammatory properties. The receptor has been reported to be exclusively expressed in macrophages. We now present evidence, that CRIg is also expressed in human monocyte-derived dendritic cells (MDDC), including on the cell surface, implicating its role in adaptive immunity. Three CRIg transcripts were detected and by Western blotting analysis both the known Long (L) and Short (S) forms were prominent but we also identified another form running between these two. Cytokines regulated the expression of CRIg on dendritic cells, leading to its up- or down regulation. Furthermore, the steroid dexamethasone markedly upregulated CRIg expression, and in co-culture experiments, the dexamethasone conditioned dendritic cells caused significant inhibition of the phytohemagglutinin-induced and alloantigen-induced T cell proliferation responses. In the alloantigen-induced response the production of IFNγ, TNF-α, IL-13, IL-4, and TGF-β1, were also significantly reduced in cultures with dexamethasone-treated DCs. Under these conditions dexamethasone conditioned DCs did not increase the percentage of regulatory T cells (Treg). Interestingly, this suppression could be overcome by the addition of an anti-CRIg monoclonal antibody to the cultures. Thus, CRIg expression may be a control point in dendritic cell function through which drugs and inflammatory mediators may exert their tolerogenic- or immunogenic-promoting effects on dendritic cells.
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Affiliation(s)
- Usma Munawara
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,College of Science and Engineering, Flinders University, Bedford Park, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Khalida Perveen
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Annabelle G Small
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Trishni Putty
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Alex Quach
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Nick N Gorgani
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Charles S Hii
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
| | - Catherine A Abbott
- College of Science and Engineering, Flinders University, Bedford Park, SA, Australia
| | - Antonio Ferrante
- Department of Immunopathology, SA Pathology at the Women's and Children's Hospital, North Adelaide, SA, Australia.,School of Medicine, School of Biological Sciences and The Robinson Research Institute, University of Adelaide, Adelaide, SA, Australia
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35
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Abstract
Immune responses are controlled by the optimal balance between protective immunity and immune tolerance. T-cell receptor (TCR) signals are modulated by co-signaling molecules, which are divided into co-stimulatory and co-inhibitory molecules. By expression at the appropriate time and location, co-signaling molecules positively and negatively control T-cell differentiation and function. For example, ligation of the CD28 on T cells provides a critical secondary signal along with TCR ligation for naive T-cell activation. In contrast, co-inhibitory signaling by the CD28-B7 family is important to regulate immune homeostasis and host defense, as these signals limit the strength and duration of immune responses to prevent autoimmunity. At the same time, microorganisms or tumor cells can use these pathways to establish an immunosuppressive environment to inhibit the immune responses against themselves. Understanding these co-inhibitory pathways will support the development of new immunotherapy for the treatment of tumors and autoimmune and infectious diseases. Here, we introduce diverse molecules belonging to the members of the CD28-B7 family.
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36
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Huang X, Feng Z, Jiang Y, Li J, Xiang Q, Guo S, Yang C, Fei L, Guo G, Zheng L, Wu Y, Chen Y. VSIG4 mediates transcriptional inhibition of Nlrp3 and Il-1β in macrophages. SCIENCE ADVANCES 2019; 5:eaau7426. [PMID: 30662948 PMCID: PMC6326752 DOI: 10.1126/sciadv.aau7426] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 11/30/2018] [Indexed: 06/03/2023]
Abstract
Hyperactivation of the NLRP3 inflammasome contributes to the pathogenesis of multiple diseases, but the mechanisms underlying transcriptional regulation of Nlrp3 remain elusive. We demonstrate here that macrophages lacking V-set and immunoglobulin domain-containing 4 (Vsig4) exhibit significant increases in Nlrp3 and Il-1β transcription, caspase-1 activation, pyroptosis, and interleukin-1β (IL-1β) secretion in response to NLRP3 inflammasome stimuli. VSIG4 interacts with MS4A6D in the formation of a surface signaling complex. VSIG4 occupancy triggers Ser232 and Ser235 phosphorylation in MS4A6D, leading to activation of JAK2-STAT3-A20 cascades that further results in nuclear factor κB suppression and Nlrp3 and Il-1β repression. Exaggerated NLRP3 and IL-1β expression in Vsig4-/- mice is accountable for deleterious disease severity in experimental autoimmune encephalomyelitis (EAE) and resistance to dextran sulfate sodium (DSS)-induced colitis. The agonistic VSIG4 antibodies (VG11), acting through NLRP3 and IL-1β suppression, show significant therapeutic efficacy in mouse EAE. These findings highlight VSIG4 as a prospective target for treating NLRP3-associated inflammatory disorders.
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MESH Headings
- Animals
- Antibodies, Monoclonal/therapeutic use
- Colitis/chemically induced
- Colitis/metabolism
- Dextran Sulfate/pharmacology
- Encephalomyelitis, Autoimmune, Experimental/chemically induced
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- Female
- HEK293 Cells
- Humans
- Inflammasomes/metabolism
- Interleukin-1beta/metabolism
- Macrophages/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Myelin-Oligodendrocyte Glycoprotein/pharmacology
- NLR Family, Pyrin Domain-Containing 3 Protein/metabolism
- Peptide Fragments/pharmacology
- RAW 264.7 Cells
- Receptors, Complement/genetics
- Receptors, Complement/immunology
- Receptors, Complement/metabolism
- THP-1 Cells
- Transcription, Genetic
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Affiliation(s)
- Xiaoyong Huang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
| | - Zeqing Feng
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
| | - Yuanzhong Jiang
- MOE Key Laboratory for Bio-resources and Eco-environment, College of Life Science, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Jialin Li
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
| | - Qun Xiang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
| | - Sheng Guo
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
| | - Chengying Yang
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
| | - Lei Fei
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
| | - Guoning Guo
- Department of Emergency, Southwest Hospital, Third Military Medical University, Chongqing 400038, People's Republic of China
| | - Lixin Zheng
- Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, NIH, Bethesda, MA, USA
| | - Yuzhang Wu
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
| | - Yongwen Chen
- Institute of Immunology, PLA, Third Military Medical University, Chongqing 400038, People’s Republic of China
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van Lookeren Campagne M, Verschoor A. Pathogen clearance and immune adherence "revisited": Immuno-regulatory roles for CRIg. Semin Immunol 2018; 37:4-11. [PMID: 29573978 DOI: 10.1016/j.smim.2018.02.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 02/15/2018] [Accepted: 02/16/2018] [Indexed: 01/30/2023]
Abstract
Rapid elimination of microbes from the bloodstream, along with the ability to mount an adaptive immune response, are essential for optimal host-defense. Kupffer cells are strategically positioned in the liver sinusoids and efficiently capture circulating microbes from the hepatic artery and portal vein, thus preventing bacterial dissemination. In vivo and in vitro studies have probed how complement receptor of the immunoglobulin superfamily (CRIg), also referred to as Z39Ig and V-set and Ig domain-containing 4 (VSIG4), acts as a critical player in pathogen recognition and clearance. While recent data suggested that CRIg may bind bacterial cell wall components directly, the single transmembrane receptor is best known for its interaction with complement C3 opsonization products on the microbial surface. On Kupffer cells, CRIg must capture opsonized microbes against the shear forces of the blood flow. In vivo work reveals how immune adherence (IA), a process in which blood platelets or erythrocytes associate with circulating bacteria, plays a critical role in regulating pathogen capture by CRIg under flow conditions. In addition to its typical innate immune functions, CRIg was shown to directly and indirectly influence adaptive immune responses. Here, we review our current understanding of the diverse roles of CRIg in pathogen elimination, anti-microbial immunity and autoimmunity. In particular, we will explore how, through selective capturing by CRIg, an important balance is achieved between the immunological and clearance functions of liver and spleen.
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Affiliation(s)
| | - Admar Verschoor
- Institute for Systemic Inflammation Research, Universität zu Lübeck, 23538 Lübeck, Germany.
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