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Gordon RA, Cosgrove HA, Marinov A, Gingras S, Tilstra JS, Campbell AM, Bastacky SI, Kashgarian M, Perl A, Nickerson KM, Shlomchik MJ. NADPH oxidase in B cells and macrophages protects against murine lupus by regulation of TLR7. JCI Insight 2024; 9:e178563. [PMID: 39042716 PMCID: PMC11343599 DOI: 10.1172/jci.insight.178563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 07/12/2024] [Indexed: 07/25/2024] Open
Abstract
Loss of NADPH oxidase (NOX2) exacerbates systemic lupus erythematosus (SLE) in mice and humans, but the mechanisms underlying this effect remain unclear. To identify the cell lineages in which NOX2 deficiency drives SLE, we employed conditional KO and chimeric approaches to delete Cybb in several hematopoietic cell lineages of MRL.Faslpr SLE-prone mice. Deletion of Cybb in macrophages/monocytes exacerbated SLE nephritis, though not to the degree observed in the Cybb global KOs. Unexpectedly, the absence of Cybb in B cells resulted in profound glomerulonephritis and interstitial nephritis, rivaling that seen with global deletion. Furthermore, we identified that NOX2 is a key regulator of TLR7, a driver of SLE pathology, both globally and specifically in B cells. This is mediated in part through suppression of TLR7-mediated NF-κB signaling in B cells. Thus, NOX2's immunomodulatory effect in SLE is orchestrated not only by its function in the myeloid compartment, but through a pivotal role in B cells by selectively inhibiting TLR7 signaling.
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Affiliation(s)
- Rachael A. Gordon
- Department of Immunology and
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Haylee A. Cosgrove
- Department of Immunology and
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | | | | | - Jeremy S. Tilstra
- Department of Immunology and
- Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Allison M. Campbell
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Sheldon I. Bastacky
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Michael Kashgarian
- Department of Pathology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Andras Perl
- Departments of Medicine, Microbiology and Immunology, Biochemistry and Molecular Biology, State University of New York, Upstate Medical University, College of Medicine, Syracuse, New York, USA
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Liu L, Sun J, Zhong C, Zhang A, Wang G, Chen S, Zhang S, Wang M, Li L. Identification of a fatty acid metabolism-related gene signature to predict prognosis in stomach adenocarcinoma. Aging (Albany NY) 2024; 16:8552-8571. [PMID: 38742949 PMCID: PMC11164501 DOI: 10.18632/aging.205823] [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: 11/02/2023] [Accepted: 03/13/2024] [Indexed: 05/16/2024]
Abstract
BACKGROUND Fatty acid metabolism (FAM) contributes to tumorigenesis and tumor development, but the role of FAM in the progression of stomach adenocarcinoma (STAD) has not been comprehensively clarified. METHODS The expression data and clinical follow-up information were obtained from The Cancer Genome Atlas (TCGA). FAM pathway was analyzed by gene set enrichment analysis (GSEA) and single-sample GSEA (ssGSEA) methods. Univariate Cox regression analysis was conducted to select prognosis genes. Molecular subtypes were classified by consensus clustering analysis. Furthermore, least absolute shrinkage and selection operator (Lasso) analysis was employed to develop a risk model. ESTIMATE and tumour immune dysfunction and exclusion (TIDE) algorithm were used to assess immunity. pRRophetic package was conducted to predict drug sensitivity. RESULTS Based on 14 FAM related prognosis genes (FAMRG), 2 clusters were determined. Patients in C2 showed a worse overall survival (OS). Furthermore, a 7-FAMRG risk model was established as an independent predictor for STAD, with a higher riskscore indicating an unfavorable OS. High riskscore patients had higher TIDE score and these patients were more sensitive to anticancer drugs such as Bortezomib, Dasatinib and Pazopanib. A nomogram based on riskscore was an effective prediction tool applicable to clinical settings. The results from pan-cancer analysis supported a prominent application value of riskscore model in other cancer types. CONCLUSION The FAMRGs model established in this study could help predict STAD prognosis and offer new directions for future studies on dysfunctional FAM-induced damage and anti-tumor drugs in STAD disease.
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Affiliation(s)
- Lei Liu
- Department of Gastroenterology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Jing Sun
- Department of Spinal Surgery, Strategic Support Force Medical Center, Beijing 100101, China
| | - Changqing Zhong
- Department of Gastroenterology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Ang Zhang
- Department of Hematopathology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Guodong Wang
- Department of Gastroenterology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Sheng Chen
- Department of Gastroenterology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Shuai Zhang
- Department of Gastroenterology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Min Wang
- Department of Gastroenterology, Strategic Support Force Medical Center, Beijing 100101, China
| | - Lianyong Li
- Department of Gastroenterology, Strategic Support Force Medical Center, Beijing 100101, China
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3
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Liu S, Lagos J, Shumlak NM, Largent AD, Lewis ST, Holder U, Du SW, Liu Y, Hou B, Acharya M, Jackson SW. NADPH oxidase exerts a B cell-intrinsic contribution to lupus risk by modulating endosomal TLR signals. J Exp Med 2024; 221:e20230774. [PMID: 38442270 PMCID: PMC10913815 DOI: 10.1084/jem.20230774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 11/11/2023] [Accepted: 01/16/2024] [Indexed: 03/07/2024] Open
Abstract
Genome-wide association studies in systemic lupus erythematosus (SLE) have linked loss-of-function mutations in phagocytic NADPH oxidase complex (NOX2) genes, including NCF1 and NCF2, to disease pathogenesis. The prevailing model holds that reduced NOX2 activity promotes SLE via defective efferocytosis, the immunologically silent clearance of apoptotic cells. Here, we describe a parallel B cell-intrinsic mechanism contributing to breaks in tolerance. In keeping with an important role for B cell Toll-like receptor (TLR) pathways in lupus pathogenesis, NOX2-deficient B cells exhibit enhanced signaling downstream of endosomal TLRs, increased humoral responses to nucleic acid-containing antigens, and the propensity toward humoral autoimmunity. Mechanistically, TLR-dependent NOX2 activation promotes LC3-mediated maturation of TLR-containing endosomes, resulting in signal termination. CRISPR-mediated disruption of NCF1 confirmed a direct role for NOX2 in regulating endosomal TLR signaling in primary human B cells. Together, these data highlight a new B cell-specific mechanism contributing to autoimmune risk in NCF1 and NCF2 variant carriers.
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Affiliation(s)
- Shuozhi Liu
- Seattle Children’s Research Institute, Seattle, WA, USA
| | | | | | | | | | - Ursula Holder
- Seattle Children’s Research Institute, Seattle, WA, USA
| | - Samuel W. Du
- Seattle Children’s Research Institute, Seattle, WA, USA
| | - Yifan Liu
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Baidong Hou
- Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Mridu Acharya
- Seattle Children’s Research Institute, Seattle, WA, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
| | - Shaun W. Jackson
- Seattle Children’s Research Institute, Seattle, WA, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
- Department of Laboratory Medicine and Pathology, University of Washington School of Medicine, Seattle, WA, USA
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4
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Gajić M, Schröder-Heurich B, Mayer-Pickel K. Deciphering the immunological interactions: targeting preeclampsia with Hydroxychloroquine's biological mechanisms. Front Pharmacol 2024; 15:1298928. [PMID: 38375029 PMCID: PMC10875033 DOI: 10.3389/fphar.2024.1298928] [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: 09/22/2023] [Accepted: 01/23/2024] [Indexed: 02/21/2024] Open
Abstract
Preeclampsia (PE) is a complex pregnancy-related disorder characterized by hypertension, followed by organ dysfunction and uteroplacental abnormalities. It remains a major cause of maternal and neonatal morbidity and mortality worldwide. Although the pathophysiology of PE has not been fully elucidated, a two-stage model has been proposed. In this model, a poorly perfused placenta releases various factors into the maternal circulation during the first stage, including pro-inflammatory cytokines, anti-angiogenic factors, and damage-associated molecular patterns into the maternal circulation. In the second stage, these factors lead to a systemic vascular dysfunction with consecutive clinical maternal and/or fetal manifestations. Despite advances in feto-maternal management, effective prophylactic and therapeutic options for PE are still lacking. Since termination of pregnancy is the only curative therapy, regardless of gestational age, new treatment/prophylactic options are urgently needed. Hydroxychloroquine (HCQ) is mainly used to treat malaria as well as certain autoimmune conditions such as systemic lupus and rheumatoid arthritis. The exact mechanism of action of HCQ is not fully understood, but several mechanisms of action have been proposed based on its pharmacological properties. Interestingly, many of them might counteract the proposed processes involved in the development of PE. Therefore, based on a literature review, we aimed to investigate the interrelated biological processes of HCQ and PE and to identify potential molecular targets in these processes.
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Affiliation(s)
- Maja Gajić
- Department of Obstetrics and Gynecology, Medical University of Graz, Graz, Austria
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5
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Dai D, Gu S, Han X, Ding H, Jiang Y, Zhang X, Yao C, Hong S, Zhang J, Shen Y, Hou G, Qu B, Zhou H, Qin Y, He Y, Ma J, Yin Z, Ye Z, Qian J, Jiang Q, Wu L, Guo Q, Chen S, Huang C, Kottyan LC, Weirauch MT, Vinuesa CG, Shen N. The transcription factor ZEB2 drives the formation of age-associated B cells. Science 2024; 383:413-421. [PMID: 38271512 PMCID: PMC7616037 DOI: 10.1126/science.adf8531] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Accepted: 12/15/2023] [Indexed: 01/27/2024]
Abstract
Age-associated B cells (ABCs) accumulate during infection, aging, and autoimmunity, contributing to lupus pathogenesis. In this study, we screened for transcription factors driving ABC formation and found that zinc finger E-box binding homeobox 2 (ZEB2) is required for human and mouse ABC differentiation in vitro. ABCs are reduced in ZEB2 haploinsufficient individuals and in mice lacking Zeb2 in B cells. In mice with toll-like receptor 7 (TLR7)-driven lupus, ZEB2 is essential for ABC formation and autoimmune pathology. ZEB2 binds to +20-kb myocyte enhancer factor 2b (Mef2b)'s intronic enhancer, repressing MEF2B-mediated germinal center B cell differentiation and promoting ABC formation. ZEB2 also targets genes important for ABC specification and function, including Itgax. ZEB2-driven ABC differentiation requires JAK-STAT (Janus kinase-signal transducer and activator of transcription), and treatment with JAK1/3 inhibitor reduces ABC accumulation in autoimmune mice and patients. Thus, ZEB2 emerges as a driver of B cell autoimmunity.
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Affiliation(s)
- Dai Dai
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
| | - Shuangshuang Gu
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiaxia Han
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Huihua Ding
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
| | - Yang Jiang
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Xiaoou Zhang
- Shanghai Key Laboratory of Maternal and Fetal Medicine, Clinical and Translational Research Center of Shanghai First Maternity and Infant Hospital, Shanghai, China
- Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, Shanghai, China
| | - Chao Yao
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Soonmin Hong
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jinsong Zhang
- Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Yiwei Shen
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Guojun Hou
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
| | - Bo Qu
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
| | - Haibo Zhou
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
| | - Yuting Qin
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
| | - Yuke He
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
| | - Jianyang Ma
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
| | - Zhihua Yin
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Zhizhong Ye
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Jie Qian
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qian Jiang
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing, China
| | - Lihua Wu
- Department of Medical Genetics, Capital Institute of Pediatrics, Beijing, China
| | - Qiang Guo
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Sheng Chen
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Chuanxin Huang
- Center for Immune-Related Diseases at Shanghai Institute of Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Leah C. Kottyan
- Center of Autoimmune Genomics and Etiology, Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
| | - Matthew T. Weirauch
- Center of Autoimmune Genomics and Etiology, Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
| | - Carola G. Vinuesa
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
- Francis Crick Institute, London, UK
| | - Nan Shen
- Shanghai Institute of Rheumatology, Shanghai Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Centre for Personalised Immunology (CACPI), Renji Hospital, School of Medicine, Shanghai Jiao Tong University (SJTUSM), Shanghai, China
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- Center of Autoimmune Genomics and Etiology, Division of Human Genetics, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio, USA
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6
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Chen B, Guo G, Wang G, Zhu Q, Wang L, Shi W, Wang S, Chen Y, Chi X, Wen F, Maarouf M, Huang S, Yang Z, Chen JL. ATG7/GAPLINC/IRF3 axis plays a critical role in regulating pathogenesis of influenza A virus. PLoS Pathog 2024; 20:e1011958. [PMID: 38227600 PMCID: PMC10817227 DOI: 10.1371/journal.ppat.1011958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 01/26/2024] [Accepted: 01/08/2024] [Indexed: 01/18/2024] Open
Abstract
Autophagy-related protein 7 (ATG7) is an essential autophagy effector enzyme. Although it is well known that autophagy plays crucial roles in the infections with various viruses including influenza A virus (IAV), function and underlying mechanism of ATG7 in infection and pathogenesis of IAV remain poorly understood. Here, in vitro studies showed that ATG7 had profound effects on replication of IAV. Depletion of ATG7 markedly attenuated the replication of IAV, whereas overexpression of ATG7 facilitated the viral replication. ATG7 conditional knockout mice were further employed and exhibited significantly resistant to viral infections, as evidenced by a lower degree of tissue injury, slower body weight loss, and better survival, than the wild type animals challenged with either IAV (RNA virus) or pseudorabies virus (DNA virus). Interestingly, we found that ATG7 promoted the replication of IAV in autophagy-dependent and -independent manners, as inhibition of autophagy failed to completely block the upregulation of IAV replication by ATG7. To determine the autophagy-independent mechanism, transcriptome analysis was utilized and demonstrated that ATG7 restrained the production of interferons (IFNs). Loss of ATG7 obviously enhanced the expression of type I and III IFNs in ATG7-depleted cells and mice, whereas overexpression of ATG7 impaired the interferon response to IAV infection. Consistently, our experiments demonstrated that ATG7 significantly suppressed IRF3 activation during the IAV infection. Furthermore, we identified long noncoding RNA (lncRNA) GAPLINC as a critical regulator involved in the promotion of IAV replication by ATG7. Importantly, both inactivation of IRF3 and inhibition of IFN response caused by ATG7 were mediated through control over GAPLINC expression, suggesting that GAPLINC contributes to the suppression of antiviral immunity by ATG7. Together, these results uncover an autophagy-independent mechanism by which ATG7 suppresses host innate immunity and establish a critical role for ATG7/GAPLINC/IRF3 axis in regulating IAV infection and pathogenesis.
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Affiliation(s)
- Biao Chen
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, People’s Republic of China
| | - Guijie Guo
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Guoqing Wang
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Qianwen Zhu
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Lulu Wang
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Wenhao Shi
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Song Wang
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Yuhai Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, People’s Republic of China
| | - Xiaojuan Chi
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Faxin Wen
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Mohamed Maarouf
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, People’s Republic of China
| | - Shile Huang
- Department of Biochemistry and Molecular Biology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, United States of America
| | - Zhou Yang
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
| | - Ji-Long Chen
- Key Laboratory of Animal Pathogen Infection and Immunology of Fujian Province, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing, People’s Republic of China
- Key Laboratory of Fujian-Taiwan Animal Pathogen Biology, College of Animal Sciences, Fujian Agriculture and Forestry University, Fuzhou, People’s Republic of China
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Zhong J, Zheng C, Chen Z, Yue H, Gao H, Jiang Y, Hui H, Tian J. Phosphopeptides P140 cause oxidative burst responses of pulmonary macrophages in an imiquimod-induced lupus model. MOLECULAR BIOMEDICINE 2023; 4:38. [PMID: 37922035 PMCID: PMC10624795 DOI: 10.1186/s43556-023-00149-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 10/18/2023] [Indexed: 11/05/2023] Open
Abstract
Recent studies challenge the dogma that a 21-mer phosphopeptide P140 protects against direct cell damage in the phase-III clinical trial (NCT02504645) for lupus, involving reactive oxygen species (ROS)-dependent release of citrullinated histone H3 (H3cit)-linked neutrophil extracellular traps. An open question is the cellular location of ROS production and H3cit formation in lupus. In this study, we examined the effects of P140 peptides on ROS production and H3cit location in lupus with in vivo and situ fluorescence imaging with subcellular resolution. We developed a mouse model of the B6 strain harbouring a bioluminescent reporter under the control of the Lysozyme M promoter. Based on the imiquimod-induced disease model of B6 mice, we used bioluminescent imaging, flow cytometry analysis, and immunohistology staining to study the effects of P140 peptides in lupus. We found a profound accumulation of CX3CR1-positive macrophages in the lungs of lupus mice after the application of P140, accompanied by lung fibrosis formation. The defined P140-mediated macrophage responses were associated with an increase of H3cit in the cytosol, interleukin-1 receptor type 1 on the extracellular membrane, and intracellular production of ROS. Of interest, the disease of imiquimod-induced lupus was prevented with an antioxidant drug apocynin. This study shows that P140 peptides play a role in aggravated murine lupus in a manner dependent on ROS production and H3cit upregulation through pulmonary macrophages.
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Affiliation(s)
- Jianghong Zhong
- School of Engineering Medicine, Beihang University, Beihang University, No.37 Xueyuan Road, Beijing, 100191, China.
- Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology, Beijing, 100191, China.
| | - Chanyu Zheng
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Zhongheng Chen
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Hangqi Yue
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Haiqiang Gao
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Yunfan Jiang
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Hui Hui
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, the State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jie Tian
- School of Engineering Medicine, Beihang University, Beihang University, No.37 Xueyuan Road, Beijing, 100191, China.
- Key Laboratory of Big Data-Based Precision Medicine (Beihang University), Ministry of Industry and Information Technology, Beijing, 100191, China.
- CAS Key Laboratory of Molecular Imaging, Beijing Key Laboratory of Molecular Imaging, the State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing, 100190, China.
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8
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Müller-Calleja N, Hollerbach A, Canisius A, Orning C, Strand S, Lackner KJ. Rapid translocation of intracellular toll-like receptors depends on endosomal NADPH oxidase. Eur J Immunol 2023; 53:e2250271. [PMID: 37366283 DOI: 10.1002/eji.202250271] [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: 11/16/2022] [Revised: 05/23/2023] [Accepted: 05/23/2023] [Indexed: 06/28/2023]
Abstract
Endosomal toll-like receptors (TLRs) must be translocated from the endoplasmic reticulum (ER) to the endosome and proteolytically cleaved within the endosome before they can induce cellular signals. As ligands for these TLRs are also liberated from apoptotic or necrotic cells, this process is controlled by several mechanisms which shall ensure that there is no inadvertent activation. We have shown previously that antiphospholipid antibodies induce endosomal NADPH-oxidase (NOX) followed by the translocation of TLR7/8 to the endosome. We show now that endosomal NOX is required for the rapid translocation of TLR3, TLR7/8, and TLR9. Deficiency of gp91phox, the catalytic subunit of NOX2, or inhibition of endosomal NOX by the chloride channel blocker niflumic acid both prevent immediate (i.e., within 30 min) translocation of these TLRs as shown by confocal laser scanning microscopy. Under these conditions, the induction of mRNA synthesis for TNF-α and secretion of TNF-α is delayed by approx. 6-9 h. However, maximal expression of TNF-α mRNA or secretion of TNF-α is not significantly reduced. In conclusion, these data add NOX2 as another component involved in the orchestration of cellular responses to ligands of endosomal TLRs.
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Affiliation(s)
- Nadine Müller-Calleja
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Mainz, Germany
- Center for Thrombosis and Hemostasis, University Medical Center Mainz, Mainz, Germany
| | - Anne Hollerbach
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Mainz, Germany
| | - Antje Canisius
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Mainz, Germany
| | - Carolin Orning
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Mainz, Germany
| | - Susanne Strand
- Department of Internal Medicine I, University Medical Center Mainz, Mainz, Germany
| | - Karl J Lackner
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Mainz, Mainz, Germany
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李 永, 吴 小. [Research progress in systemic lupus erythematosus from 2021 to 2022]. ZHONGGUO DANG DAI ER KE ZA ZHI = CHINESE JOURNAL OF CONTEMPORARY PEDIATRICS 2023; 25:785-790. [PMID: 37668024 PMCID: PMC10484082 DOI: 10.7499/j.issn.1008-8830.2302150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 07/03/2023] [Indexed: 09/06/2023]
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease that affects multiple organ systems, presenting a complex and diverse clinical manifestation. The heterogeneous treatment response and prognosis of SLE pose significant challenges to its diagnosis, classification, and homogeneous treatment. The emergence of new technologies and fields, such as synthetic biology, genomics, and proteomics, has contributed to a deeper exploration of the pathogenesis and biomarkers of SLE, facilitating precision diagnosis and treatment. This review summarizes the latest research data and achievements in SLE for the years 2021-2022, providing an overview and summary of relevant studies conducted in the past two years.
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Chen D, Yin H, Zhang L, Li F, Lu L. Familial systemic lupus erythematosus associated with a loss-of-function mutation in TRPC6. Ann Rheum Dis 2023; 82:1120-1122. [PMID: 36944475 DOI: 10.1136/ard-2022-223824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 03/14/2023] [Indexed: 03/23/2023]
Affiliation(s)
- Dandan Chen
- Rheumatology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, China
| | - Hanlin Yin
- Rheumatology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, China
| | - Le Zhang
- Rheumatology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, China
| | - Fubin Li
- Center for Immune-Related Diseases at Shanghai Institute of Immunology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Institute of Immunology, Faculty of Basic Medicine; Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Liangjing Lu
- Rheumatology, Shanghai Jiao Tong University School of Medicine Affiliated Renji Hospital, Shanghai, China
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Li Y, Li Z, Nandakumar KS, Holmdahl R. Human NCF1 90H Variant Promotes IL-23/IL-17-Dependent Mannan-Induced Psoriasis and Psoriatic Arthritis. Antioxidants (Basel) 2023; 12:1348. [PMID: 37507888 PMCID: PMC10376330 DOI: 10.3390/antiox12071348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/14/2023] [Accepted: 06/24/2023] [Indexed: 07/30/2023] Open
Abstract
Recently, a major single nucleotide variant on the NCF1 gene, leading to an amino acid replacement from arginine to histidine at position 90 (NCF1R90H), associated with low production of reactive oxygen species (ROS), was found to be causative for several autoimmune diseases. Psoriasis in the skin (PsO) and psoriatic arthritis (PsA) were induced with mannan by intraperitoneal injection or epicutaneous application, evaluated by visual and histology scoring. Immunostaining was used to identify macrophages, NCF1, and keratinocytes. The population of immune cells was quantified by flow cytometry, gene expression was analyzed by RT-qPCR, and the JAK/STAT signaling pathway was investigated by immunohistochemical staining and western blot. We found that the low ROS responder NCF190H variant promotes PsO and PsA (the MIP model). The NCF190H-expressing mice had hyperactivated macrophages, expanded keratinocytes, and dramatically increased numbers of γδT17 cells with upregulated IL-17A, IL-23, and TNF-α. In addition, the JAK1/STAT3 signaling pathway was also upregulated in cells in the psoriatic skin tissues of Ncf190H mice. To summarize, a defined SNP (NCF1-339, also named NCF190H) was found to activate the IL-23/IL-17 axis and JAK-STAT signaling pathways, leading to hyperactivation of macrophages and keratinocytes and causing mouse psoriasis and psoriatic arthritis.
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Affiliation(s)
- Yanpeng Li
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden
- SMU-KI United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhilei Li
- Clinical Pharmacy Division of Pharmacy Department, Southern University of Science and Technology Hospital, Shenzhen 518055, China
| | - Kutty Selva Nandakumar
- SMU-KI United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
- Department of Environmental and Biosciences, School of Business, Innovation, and Sustainability, Halmstad University, 30118 Halmstad, Sweden
| | - Rikard Holmdahl
- Division of Medical Inflammation Research, Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden
- SMU-KI United Medical Inflammation Center, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
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Risk variant regulates pDC hyperactivation in SLE. Nat Rev Rheumatol 2022; 18:495. [PMID: 35927579 DOI: 10.1038/s41584-022-00825-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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