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Zou X, Yang M, Ye Z, Li T, Jiang Z, Xia Y, Tan S, Long Y, Wang X. Uncovering lupus nephritis-specific genes and the potential of TNFRSF17-targeted immunotherapy: a high-throughput sequencing study. Front Immunol 2024; 15:1303611. [PMID: 38440734 PMCID: PMC10909935 DOI: 10.3389/fimmu.2024.1303611] [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: 09/28/2023] [Accepted: 02/05/2024] [Indexed: 03/06/2024] Open
Abstract
Introduction Lupus nephritis (LN) is a severe manifestation of systemic lupus erythematosus (SLE). This study aimed to identify LN specific-genes and potential therapeutic targets. Methods We performed high-throughput transcriptome sequencing on peripheral blood mononuclear cells (PBMCs) from LN patients. Healthy individuals and SLE patients without LN were used as controls. To validate the sequencing results, qRT-PCR was performed for 5 upregulated and 5 downregulated genes. Furthermore, the effect of the TNFRSF17-targeting drug IBI379 on patient plasma cells and B cells was evaluated by flow cytometry. Results Our analysis identified 1493 and 205 differential genes in the LN group compared to the control and SLE without LN groups respectively, with 70 genes common to both sets, marking them as LN-specific. These LN-specific genes were significantly enriched in the 'regulation of biological quality' GO term and the cell cycle pathway. Notably, several genes including TNFRSF17 were significantly overexpressed in the kidneys of both LN patients and NZB/W mice. TNFRSF17 levels correlated positively with urinary protein levels, and negatively with complement C3 and C4 levels in LN patients. The TNFRSF17-targeting drug IBI379 effectively induced apoptosis in patient plasma cells without significantly affecting B cells. Discussion Our findings suggest that TNFRSF17 could serve as a potential therapeutic target for LN. Moreover, IBI379 is presented as a promising treatment option for LN.
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Affiliation(s)
- Xiaojuan Zou
- Department of Rheumatology and Immunology, The First Hospital of Jilin University, Changchun, China
| | - Mingyue Yang
- Laboratory for Tumor Immunology, The First Hospital of Jilin University, Changchun, China
| | - Zhuang Ye
- Department of Rheumatology and Immunology, The First Hospital of Jilin University, Changchun, China
| | - Tie Li
- Department of Rheumatology and Immunology, The First Hospital of Jilin University, Changchun, China
| | - Zhenyu Jiang
- Department of Rheumatology and Immunology, The First Hospital of Jilin University, Changchun, China
| | - Ying Xia
- Laboratory for Tumor Immunology, The First Hospital of Jilin University, Changchun, China
| | - Shenghai Tan
- Department of Surgical Intensive Care Unit (SICU), The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yu Long
- Department of Rheumatology and Immunology, The First Hospital of Jilin University, Changchun, China
| | - Xiaosong Wang
- Laboratory for Tumor Immunology, The First Hospital of Jilin University, Changchun, China
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Ji L, Li T, Chen H, Yang Y, Lu E, Liu J, Qiao W, Chen H. The crucial regulatory role of type I interferon in inflammatory diseases. Cell Biosci 2023; 13:230. [PMID: 38124132 PMCID: PMC10734085 DOI: 10.1186/s13578-023-01188-z] [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: 10/16/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023] Open
Abstract
Type I interferon (IFN-I) plays crucial roles in the regulation of inflammation and it is associated with various inflammatory diseases including systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), and periodontitis, impacting people's health and quality of life. It is well-established that IFN-Is affect immune responses and inflammatory factors by regulating some signaling. However, currently, there is no comprehensive overview of the crucial regulatory role of IFN-I in distinctive pathways as well as associated inflammatory diseases. This review aims to provide a narrative of the involvement of IFN-I in different signaling pathways, mainly mediating the related key factors with specific targets in the pathways and signaling cascades to influence the progression of inflammatory diseases. As such, we suggested that IFN-Is induce inflammatory regulation through the stimulation of certain factors in signaling pathways, which displays possible efficient treatment methods and provides a reference for the precise control of inflammatory diseases.
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Affiliation(s)
- Ling Ji
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong, SAR, People's Republic of China
| | - Tianle Li
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong, SAR, People's Republic of China
| | - Huimin Chen
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong, SAR, People's Republic of China
| | - Yanqi Yang
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong, SAR, People's Republic of China
- Division of Pediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong, SAR, People's Republic of China
| | - Eryi Lu
- Department of Stomatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, 160 Pujian Road, Shanghai, China
| | - Jieying Liu
- Department of Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Wei Qiao
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong, SAR, People's Republic of China.
- Applied Oral Sciences & Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Level 3, 34 Hospital Road, Sai Ying Pun, Hong Kong, SAR, People's Republic of China.
| | - Hui Chen
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong, SAR, People's Republic of China.
- Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Level 3, 34 Hospital Road, Sai Ying Pun, Hong Kong, SAR, People's Republic of China.
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Ma W, Huang G, Wang Z, Wang L, Gao Q. IRF7: role and regulation in immunity and autoimmunity. Front Immunol 2023; 14:1236923. [PMID: 37638030 PMCID: PMC10449649 DOI: 10.3389/fimmu.2023.1236923] [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: 06/08/2023] [Accepted: 07/25/2023] [Indexed: 08/29/2023] Open
Abstract
Interferon regulatory factor (IRF) 7 was originally identified as master transcriptional factor that produced IFN-I and regulated innate immune response, subsequent studies have revealed that IRF7 performs a multifaceted and versatile functions in multiple biological processes. In this review, we provide a comprehensive overview on the current knowledge of the role of IRF7 in immunity and autoimmunity. We focus on the latest regulatory mechanisms of IRF7 in IFN-I, including signaling pathways, transcription, translation, and post-translational levels, the dimerization and nuclear translocation, and the role of IRF7 in IFN-III and COVID-19. In addition to antiviral immunity, we also discuss the role and mechanism of IRF7 in autoimmunity, and the further research will expand our understanding of IRF7.
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Affiliation(s)
- Wei Ma
- Department of Cell Biology, College of Basic Medical Sciences, Army Medical University (Third Military Medical University), Chongqing, China
- Department of Wound Infection and Drug, State Key Laboratory of Trauma, Burn and Combined Injury, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Gang Huang
- Department of Oncology, The Second Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
| | - Zhi Wang
- Department of Cell Biology, College of Basic Medical Sciences, Army Medical University (Third Military Medical University), Chongqing, China
| | - Li Wang
- Department of Cell Biology, College of Basic Medical Sciences, Army Medical University (Third Military Medical University), Chongqing, China
| | - Qiangguo Gao
- Department of Cell Biology, College of Basic Medical Sciences, Army Medical University (Third Military Medical University), Chongqing, China
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4
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Fan XL, Song Y, Qin DX, Lin PY. Regulatory Effects of Clock and Bmal1 on Circadian Rhythmic TLR Expression. Int Rev Immunol 2023; 42:101-112. [PMID: 34544330 DOI: 10.1080/08830185.2021.1931170] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Circadian locomotor output cycles kaput (Clock) and brain and muscle ARNT-like 1 (Bmal1) are two core circadian clock genes. They form a heterodimer that can bind to the E-box element in the promoters of Period circadian protein (Per) and Cryptochrome (Cry) genes, thereby inducing the rhythmic expression of circadian clock control genes. Toll-like receptors (TLRs) are type I transmembrane proteins belonging to the pattern recognition receptor (PRR) family. They can recognize a variety of pathogens and play an important role in innate immunity and adaptive immune responses. Recent studies have found that the circadian clock is closely associated with the immune system. TLRs have a certain correlation with the circadian rhythms; Bmal1 seems to be the central mediator connecting the circadian clock and the immune system. Research on Bmal1 and TLRs has made some progress, but the specific relationship between TLRs and Bmal1 remains unclear. Understanding the relationship between TLRs and Clock/Bmal1 genes is increasingly important for basic research and clinical treatment.
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Affiliation(s)
- Xu-Li Fan
- Department of Pharmacology, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China
| | - Ying Song
- Department of Pharmacology, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China
| | - Dong-Xu Qin
- Department of Pharmacology, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China
| | - Pei-Yao Lin
- Department of Pharmacology, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China
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5
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Wiest MJ, Gu C, Ham H, Gorvel L, Keddis MT, Griffing LW, Joo H, Gorvel JP, Billadeau DD, Oh S. Disruption of endosomal trafficking with EGA alters TLR9 cytokine response in human plasmacytoid dendritic cells. Front Immunol 2023; 14:1144127. [PMID: 37020542 PMCID: PMC10067882 DOI: 10.3389/fimmu.2023.1144127] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 03/10/2023] [Indexed: 04/07/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) exhibit bifurcated cytokine responses to TLR9 agonists, an IRF7-mediated type 1 IFN response or a pro-inflammatory cytokine response via the activation of NF-κB. This bifurcated response has been hypothesized to result from either distinct signaling endosomes or endo-lysosomal trafficking delay of TLR9 agonists allowing for autocrine signaling to affect outcomes. Utilizing the late endosome trafficking inhibitor, EGA, we assessed the bifurcated cytokine responses of pDCs to TLR9 stimulation. EGA treatment of pDCs diminished both IFNα and pro-inflammatory cytokine expression induced by CpG DNAs (D- and K-type), CpG-DNAs complexed with DOTAP, and genomic DNAs complexed with LL37. Mechanistically, EGA suppressed phosphorylation of IKKα/β, STAT1, Akt, and p38, and decreased colocalization of CpG oligodeoxynucleotides with LAMP+ endo-lysosomes. EGA also diminished type 1 IFN expression by pDCs from systemic lupus erythematosus patients. Therefore, our findings help understand mechanisms for the bifurcated cytokine responses by pDCs and support future examination of the potential benefit of EGA in treating type 1 IFN-associated inflammatory diseases in the future.
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Affiliation(s)
- Matthew J. Wiest
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
- Baylor Institute of Biomedical Studies, Baylor University, Waco, TX, United States
| | - Chao Gu
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
| | - Hyoungjun Ham
- Department of Immunology, Mayo Clinic, Rochester, MN, United States
| | - Laurent Gorvel
- CRCM, Aix Marseille Universite, INSERM, Marseille, France
| | - Mira T. Keddis
- Department of Nephrology, Mayo Clinic, Scottsdale, AZ, United States
| | - Leroy W. Griffing
- Department of Rheumatology, Mayo Clinic, Scottsdale, AZ, United States
| | - HyeMee Joo
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
- Baylor Institute of Biomedical Studies, Baylor University, Waco, TX, United States
| | | | | | - SangKon Oh
- Department of Immunology, Mayo Clinic, Scottsdale, AZ, United States
- Baylor Institute of Biomedical Studies, Baylor University, Waco, TX, United States
- *Correspondence: SangKon Oh,
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Xu G, Gao Y, Pan T, Li S, Zhang Y, Guo J, Tian Z, Xu J, Li Y, Li X. Dynamic immune ecosystem of dengue infection revealed by single-cell sequencing. J Leukoc Biol 2022; 112:1621-1631. [PMID: 35766188 DOI: 10.1002/jlb.6ma0622-738rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 06/06/2022] [Indexed: 01/04/2023] Open
Abstract
Dengue is the most common human arboviral disease worldwide, which can result in severe complications. A dysfunctional immune response in dengue infective patients is a recurrent theme impacting symptoms and mortality, but the heterogeneity and dynamics of immune infiltrates during dengue infection remain poorly characterized. Here, we identified the immune cell types in scRNA-seq data from 13127 cells of 10 dengue infective patients and discovered the dynamic immune ecosystems of dengue infection. Notably, genes that exhibited higher expression in specific cell types play important roles in response to virus infection in a module manner. Transcription factors (TFs) are the major regulators (i.e., PAX5, IRF7, KLF4, and IRF8) that can potentially regulate infection-related genes. We demonstrated that the dynamic rewired regulatory network during dengue infection. Moreover, our data revealed the complex cell-cell communications from control to fever and severe dengue patients and prevalent cell-cell communication rewiring was observed. We further identified the IFN-II and CXCL signaling pathways that medicated the communications and play important roles in dengue infection. Together, our comprehensive analysis of dynamic immune ecosystem of dengue infection provided novel insights for understanding the pathogenesis of and developing effective therapeutic strategies for dengue infection.
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Affiliation(s)
- Gang Xu
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China
| | - Yueying Gao
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China
| | - Tao Pan
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China
| | - Si Li
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China
| | - Ya Zhang
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China
| | - Jing Guo
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China
| | - Zhanyu Tian
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China
| | - Juan Xu
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
| | - Yongsheng Li
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China
| | - Xia Li
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, College of Biomedical Information and Engineering, Hainan Women and Children's Medical Center, Hainan Medical University, Haikou, China.,College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Heilongjiang, China
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7
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Chen H, Chew G, Devapragash N, Loh JZ, Huang KY, Guo J, Liu S, Tan ELS, Chen S, Tee NGZ, Mia MM, Singh MK, Zhang A, Behmoaras J, Petretto E. The E3 ubiquitin ligase WWP2 regulates pro-fibrogenic monocyte infiltration and activity in heart fibrosis. Nat Commun 2022; 13:7375. [PMID: 36450710 PMCID: PMC9712659 DOI: 10.1038/s41467-022-34971-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 11/11/2022] [Indexed: 12/03/2022] Open
Abstract
Non-ischemic cardiomyopathy (NICM) can cause left ventricular dysfunction through interstitial fibrosis, which corresponds to the failure of cardiac tissue remodeling. Recent evidence implicates monocytes/macrophages in the etiopathology of cardiac fibrosis, but giving their heterogeneity and the antagonizing roles of macrophage subtypes in fibrosis, targeting these cells has been challenging. Here we focus on WWP2, an E3 ubiquitin ligase that acts as a positive genetic regulator of human and murine cardiac fibrosis, and show that myeloid specific deletion of WWP2 reduces cardiac fibrosis in hypertension-induced NICM. By using single cell RNA sequencing analysis of immune cells in the same model, we establish the functional heterogeneity of macrophages and define an early pro-fibrogenic phase of NICM that is driven by Ccl5-expressing Ly6chigh monocytes. Among cardiac macrophage subtypes, WWP2 dysfunction primarily affects Ly6chigh monocytes via modulating Ccl5, and consequentially macrophage infiltration and activation, which contributes to reduced myofibroblast trans-differentiation. WWP2 interacts with transcription factor IRF7, promoting its non-degradative mono-ubiquitination, nuclear translocation and transcriptional activity, leading to upregulation of Ccl5 at transcriptional level. We identify a pro-fibrogenic macrophage subtype in non-ischemic cardiomyopathy, and demonstrate that WWP2 is a key regulator of IRF7-mediated Ccl5/Ly6chigh monocyte axis in heart fibrosis.
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Affiliation(s)
- Huimei Chen
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore ,grid.254147.10000 0000 9776 7793Institute for Big Data and Artificial Intelligence in Medicine, School of Science, China Pharmaceutical University, Nanjing, 210009 China
| | - Gabriel Chew
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Nithya Devapragash
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Jui Zhi Loh
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Kevin Y. Huang
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Jing Guo
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Shiyang Liu
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Elisabeth Li Sa Tan
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Shuang Chen
- grid.254147.10000 0000 9776 7793Institute for Big Data and Artificial Intelligence in Medicine, School of Science, China Pharmaceutical University, Nanjing, 210009 China ,grid.452511.6Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, 210008 China
| | - Nicole Gui Zhen Tee
- grid.419385.20000 0004 0620 9905National Heart Centre Singapore, Singapore, 169609 Singapore
| | - Masum M. Mia
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Manvendra K. Singh
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore
| | - Aihua Zhang
- grid.452511.6Department of Nephrology, Children’s Hospital of Nanjing Medical University, Nanjing, 210008 China
| | - Jacques Behmoaras
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore ,grid.413629.b0000 0001 0705 4923Centre for Inflammatory Disease, Imperial College London, Hammersmith Hospital, London, W12 0NN UK
| | - Enrico Petretto
- grid.428397.30000 0004 0385 0924Programme in Cardiovascular and Metabolic Disorders, Duke-NUS Medical School, 8 College Road, 169857 Singapore, Singapore ,grid.254147.10000 0000 9776 7793Institute for Big Data and Artificial Intelligence in Medicine, School of Science, China Pharmaceutical University, Nanjing, 210009 China
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Laurent P, Yang C, Rendeiro AF, Nilsson-Payant BE, Carrau L, Chandar V, Bram Y, tenOever BR, Elemento O, Ivashkiv LB, Schwartz RE, Barrat FJ. Sensing of SARS-CoV-2 by pDCs and their subsequent production of IFN-I contribute to macrophage-induced cytokine storm during COVID-19. Sci Immunol 2022; 7:eadd4906. [PMID: 36083891 PMCID: PMC9853436 DOI: 10.1126/sciimmunol.add4906] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Lung-infiltrating macrophages create a marked inflammatory milieu in a subset of patients with COVID-19 by producing a cytokine storm, which correlates with increased lethality. However, these macrophages are largely not infected by SARS-CoV-2, so the mechanism underlying their activation in the lung is unclear. Type I interferons (IFN-I) contribute to protecting the host against SARS-CoV-2 but may also have some deleterious effect, and the source of IFN-I in the lungs of infected patients is not well defined. Plasmacytoid dendritic cells (pDCs), a key cell type involved in antiviral responses, can produce IFN-I in response to SARS-CoV-2. We observed the infiltration of pDCs in the lungs of SARS-CoV-2-infected patients, which correlated with strong IFN-I signaling in lung macrophages. In patients with severe COVID-19, lung macrophages expressed a robust inflammatory signature, which correlated with persistent IFN-I signaling at the single-cell level. Hence, we observed the uncoupling in the kinetics of the infiltration of pDCs in the lungs and the associated IFN-I signature, with the cytokine storm in macrophages. We observed that pDCs were the dominant IFN-α-producing cells in response to the virus in the blood, whereas macrophages produced IFN-α only when in physical contact with infected epithelial cells. We also showed that IFN-α produced by pDCs, after the sensing of SARS-CoV-2 by TLR7, mediated changes in macrophages at both transcriptional and epigenetic levels, which favored their hyperactivation by environmental stimuli. Together, these data indicate that the priming of macrophages can result from the response by pDCs to SARS-CoV-2, leading to macrophage activation in patients with severe COVID-19.
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Affiliation(s)
- Paôline Laurent
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021, USA
| | - Chao Yang
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021, USA
| | - André F. Rendeiro
- Institute for Computational Biomedicine and Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY 10021, USA
| | - Benjamin E. Nilsson-Payant
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1468 Madison Ave., New York, NY 10029, USA
- Department of Microbiology, New York University, 430 E 29th Street, New York, NY 10016, USA
| | - Lucia Carrau
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1468 Madison Ave., New York, NY 10029, USA
- Department of Microbiology, New York University, 430 E 29th Street, New York, NY 10016, USA
| | - Vasuretha Chandar
- Division of Gastroenterology and Hepatology, Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Yaron Bram
- Division of Gastroenterology and Hepatology, Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA
| | - Benjamin R. tenOever
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, 1468 Madison Ave., New York, NY 10029, USA
- Department of Microbiology, New York University, 430 E 29th Street, New York, NY 10016, USA
| | - Olivier Elemento
- Institute for Computational Biomedicine and Caryl and Israel Englander Institute for Precision Medicine, Weill Cornell Medicine, New York, NY 10021, USA
- WorldQuant Initiative for Quantitative Prediction and Department of Physiology, Biophysics and Systems Biology, Weill Cornell Medicine, New York, NY 10029, USA
- Department of Medicine, Weill Cornell Medical College of Cornell University, New York, NY 10021, USA
| | - Lionel B. Ivashkiv
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021, USA
- Department of Medicine, Weill Cornell Medical College of Cornell University, New York, NY 10021, USA
| | - Robert E. Schwartz
- Department of Medicine, Weill Cornell Medical College of Cornell University, New York, NY 10021, USA
- Department of Physiology, Biophysics and Systems Biology, Weill Cornell Medicine, New York, NY 10065, USA
| | - Franck J. Barrat
- HSS Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY 10021, USA
- Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY 10065, USA
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Class I PI3K regulatory subunits control differentiation of dendritic cell subsets and regulate Flt3L mediated signal transduction. Sci Rep 2022; 12:12311. [PMID: 35853935 PMCID: PMC9296662 DOI: 10.1038/s41598-022-16548-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 07/12/2022] [Indexed: 11/18/2022] Open
Abstract
Dendritic cells (DCs) play pivotal roles in initiating and shaping both innate and adaptive immune responses. The spatiotemporal expression of transcription factor networks and activation of specific signal transduction pathways determine the specification, distribution and differentiation of DC subsets. Even though pioneering studies have established indispensable roles for specific catalytic subunits (p110δ and p110γ) in immune cells, functions of the regulatory subunits, particularly of Class I PI3K, within the hematopoietic system remain incompletely understood. In the study presented here, we deleted the key regulatory subunits—p85α and p85β of the Class IA PI3K in hematopoietic cells and studied its impact on DC differentiation. Our studies identify that a deficiency of p85 causes increased differentiation of conventional DC (cDC) 2 and plasmacytoid DC (pDC) subsets in the spleen. On the other hand, DC numbers in the bone marrow (BM), thymus and lymph nodes were decreased in p85 mutant mice. Analysis of DC-specific progenitors and precursors indicated increased numbers in the BM and spleen of p85 deficient mice. In-vitro differentiation studies demonstrated augmented DC-differentiation capacities of p85 deficient BM cells in the presence of GM-CSF and Flt3L. BM chimera studies established that p85 deficiency affects DC development through cell intrinsic mechanisms. Molecular studies revealed increased proliferation of DCs and common DC progenitors (CDPs) in the absence of p85 and altered signal transduction pathways in p85 mutant DC subsets in response to Flt3L. In essence, data presented here, for the first time, unequivocally establish that the P85α subunit of class IA PI3Ks has an indispensable role in the development and maintenance of DCs.
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Du Y, Ah Kioon MD, Laurent P, Chaudhary V, Pierides M, Yang C, Oliver D, Ivashkiv LB, Barrat FJ. Chemokines form nanoparticles with DNA and can superinduce TLR-driven immune inflammation. J Exp Med 2022; 219:213252. [PMID: 35640018 DOI: 10.1084/jem.20212142] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 03/24/2022] [Accepted: 05/12/2022] [Indexed: 12/13/2022] Open
Abstract
Chemokines control the migratory patterns and positioning of immune cells to organize immune responses to pathogens. However, many chemokines have been associated with systemic autoimmune diseases that have chronic IFN signatures. We report that a series of chemokines, including CXCL4, CXCL10, CXCL12, and CCL5, can superinduce type I IFN (IFN-I) by TLR9-activated plasmacytoid DCs (pDCs), independently of their respective known chemokine receptors. Mechanistically, we show that chemokines such as CXCL4 mediate transcriptional and epigenetic changes in pDCs, mostly targeted to the IFN-I pathways. We describe that chemokines physically interact with DNA to form nanoparticles that promote clathrin-mediated cellular uptake and delivery of DNA in the early endosomes of pDCs. Using two separate mouse models of skin inflammation, we observed the presence of CXCL4 associated with DNA in vivo. These data reveal a noncanonical role for chemokines to serve as nucleic acid delivery vectors to modulate TLR signaling, with implications for the chronic presence of IFN-I by pDCs in autoimmune diseases.
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Affiliation(s)
- Yong Du
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY
| | | | - Paoline Laurent
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY
| | - Vidyanath Chaudhary
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY
| | - Michael Pierides
- HSS Research Institute, Hospital for Special Surgery, New York, NY
| | - Chao Yang
- HSS Research Institute, Hospital for Special Surgery, New York, NY
| | - David Oliver
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY
| | - Lionel B Ivashkiv
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY.,Department of Medicine, Weill Cornell Medical College of Cornell University, New York, NY
| | - Franck J Barrat
- HSS Research Institute, Hospital for Special Surgery, New York, NY.,Department of Microbiology and Immunology, Weill Cornell Medical College of Cornell University, New York, NY.,David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY
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11
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Nilsen KE, Skjesol A, Frengen Kojen J, Espevik T, Stenvik J, Yurchenko M. TIRAP/Mal Positively Regulates TLR8-Mediated Signaling via IRF5 in Human Cells. Biomedicines 2022; 10:biomedicines10071476. [PMID: 35884781 PMCID: PMC9312982 DOI: 10.3390/biomedicines10071476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/09/2022] [Accepted: 06/17/2022] [Indexed: 11/21/2022] Open
Abstract
Toll-like receptor 8 (TLR8) recognizes single-stranded RNA of viral and bacterial origin as well as mediates the secretion of pro-inflammatory cytokines and type I interferons by human monocytes and macrophages. TLR8, as other endosomal TLRs, utilizes the MyD88 adaptor protein for initiation of signaling from endosomes. Here, we addressed the potential role of the Toll-interleukin 1 receptor domain-containing adaptor protein (TIRAP) in the regulation of TLR8 signaling in human primary monocyte-derived macrophages (MDMs). To accomplish this, we performed TIRAP gene silencing, followed by the stimulation of cells with synthetic ligands or live bacteria. Cytokine-gene expression and secretion were analyzed by quantitative PCR or Bioplex assays, respectively, while nuclear translocation of transcription factors was addressed by immunofluorescence and imaging, as well as by cell fractionation and immunoblotting. Immunoprecipitation and Akt inhibitors were also used to dissect the signaling mechanisms. Overall, we show that TIRAP is recruited to the TLR8 Myddosome signaling complex, where TIRAP contributes to Akt-kinase activation and the nuclear translocation of interferon regulatory factor 5 (IRF5). Recruitment of TIRAP to the TLR8 signaling complex promotes the expression and secretion of the IRF5-dependent cytokines IFNβ and IL-12p70 as well as, to a lesser degree, TNF. These findings reveal a new and unconventional role of TIRAP in innate immune defense.
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Affiliation(s)
- Kaja Elisabeth Nilsen
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Astrid Skjesol
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - June Frengen Kojen
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Terje Espevik
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Jørgen Stenvik
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, NO-7006 Trondheim, Norway
| | - Maria Yurchenko
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, NO-7006 Trondheim, Norway
- Correspondence:
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12
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Class I PI3K Biology. Curr Top Microbiol Immunol 2022; 436:3-49. [DOI: 10.1007/978-3-031-06566-8_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Nadzirin IB, Fortuny-Gomez A, Ngum N, Richards D, Ali S, Searcey M, Fountain SJ. Taspine is a natural product that suppresses P2X4 receptor activity via phosphoinositide 3-kinase inhibition. Br J Pharmacol 2021; 178:4859-4872. [PMID: 34398973 DOI: 10.1111/bph.15663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 07/28/2021] [Accepted: 08/03/2021] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND & PURPOSE P2X4 is a ligand-gated cation channel activated by extracellular ATP, involved in neuropathic pain, inflammation and arterial tone. EXPERIMENTAL APPROACH Natural products were screened against human or mouse P2X4 activity using fura-2 loaded 1321N1 cells for measurement of intracellular Ca2+ responses; whole-cell currents were measured by patch clamp electrophysiological. Human primary macrophage chemokine release was used to assess effect of taspine on inflammatory cell function. An enzymatic assay was performed to assess the effect of taspine on recombinant PI3-kinase. KEY RESULTS A natural product screen identified taspine as an inhibitor of human P2X4 activity. Taspine inhibits human and mouse P2X4-mediated Ca2+ influx in 1321N1 cells expressing receptors (IC50 1.6±0.4 μM and 1.6±0.3 μM, respectively), but lacked activity at human P2X2, P2X3, P2X2/3 and P2X7 receptors. Taspine inhibited the maximal response at human and mouse P2X4 but had no effect on ATP potency. Taspine has a slow onset rate (~15 mins for half-maximal inhibition), irreversible over 30 minutes of washout. Taspine inhibits P2X4-mediated Ca2+ signalling in mouse BV-2 microglia cells and human primary macrophage. Taspine inhibited P2X4-mediated CXCL5 secretion in human primary macrophage. Taspine reversed ivermectin-induced potentiation of P2X4 currents in 1321N1 stably expressing cells. The known PI3-kinase inhibitor LY294002 mimicked the properties of taspine on P2X4-mediated Ca2+ influx and whole-cell currents. Taspine directly inhibited the enzymatic activity of recombinant PI3-kinase in a competitive manner. CONCLUSIONS AND IMPLICATIONS Taspine is a novel natural product P2X4 inhibitor, mediating its effect through PI3-kinase inhibitor rather than receptor antagonism. Taspine can inhibit the pro-inflammatory signalling by P2X4 in human primary macrophage.
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Affiliation(s)
- Izzuddin Bin Nadzirin
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park.,Kulliyyah of Allied Health Sciences, International Islamic University Malaysia, Kuantan Campus, Kuantan, Malaysia
| | - Anna Fortuny-Gomez
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park
| | - Neville Ngum
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park
| | - David Richards
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park
| | - Seema Ali
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park
| | - Mark Searcey
- School of Pharmacy, University of East Anglia, Norwich Research Park
| | - Samuel J Fountain
- Biomedical Research Centre, School of Biological Sciences, University of East Anglia, Norwich Research Park
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14
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Coppola A, Capuani B, Pacifici F, Pastore D, Arriga R, Bellia A, Andreadi A, Di Daniele N, Lauro R, Della-Morte D, Sconocchia G, Lauro D. Activation of Peripheral Blood Mononuclear Cells and Leptin Secretion: New Potential Role of Interleukin-2 and High Mobility Group Box (HMGB)1. Int J Mol Sci 2021; 22:ijms22157988. [PMID: 34360753 PMCID: PMC8347813 DOI: 10.3390/ijms22157988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 06/18/2021] [Accepted: 07/22/2021] [Indexed: 01/15/2023] Open
Abstract
Activation of innate immunity and low-grade inflammation contributes to hyperglycemia and an onset of Type 2 Diabetes Mellitus (T2DM). Interleukin-2 (IL-2), leptin, High Mobility Group Box-1 (HMGB-1), and increased glucose concentrations are mediators of these processes also by modulating peripheral blood mononuclear cells (PBMCs) response. The aim of this study was to investigate if HMGB-1 and IL-2 turn on PBMCs and their leptin secretion. In isolated human PBMCs and their subpopulations from healthy individuals and naïve T2DM patients, leptin release, pro-inflammatory response and Toll-like Receptors (TLRs) activation was measured. After treatment with IL-2 and HMGB1, NK (Natural Killer) have the highest amount of leptin secretion, whilst NK-T have the maximal release in basal conditions. TLR4 (TAK242) and/or TLR2 (TLR2-IgA) inhibitors decreased leptin secretion after IL-2 and HMGB1 treatment. A further non-significant increase in leptin secretion was reported in PBMCs of naive T2DM patients in response to IL-2 and HMGB-1 stimulation. Finally, hyperglycemia or hyperinsulinemia might stimulate leptin secretion from PBMCs. The amount of leptin released from PBMCs after the different treatments was enough to stimulate the secretion of IL-1β from monocytes. Targeting leptin sera levels and secretion from PBMCs could represent a new therapeutic strategy to counteract metabolic diseases such as T2DM.
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Affiliation(s)
- Andrea Coppola
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Barbara Capuani
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Francesca Pacifici
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Donatella Pastore
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Roberto Arriga
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - Alfonso Bellia
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Medical Sciences, Fondazione Policlinico Tor Vergata, 00133 Rome, Italy
| | - Aikaterini Andreadi
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Medical Sciences, Fondazione Policlinico Tor Vergata, 00133 Rome, Italy
| | - Nicola Di Daniele
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Medical Sciences, Fondazione Policlinico Tor Vergata, 00133 Rome, Italy
| | - Renato Lauro
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
| | - David Della-Morte
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Human Sciences and Quality of Life Promotion, San Raffaele Rome Open University, 00166 Rome, Italy
| | - Giuseppe Sconocchia
- Institute of Translational Pharmacology, National Research Council Rome, 00133 Rome, Italy;
| | - Davide Lauro
- Department of Systems Medicine, University of Rome “Tor Vergata”, 00133 Rome, Italy; (A.C.); (B.C.); (F.P.); (D.P.); (R.A.); (A.B.); (A.A.); (N.D.D.); (R.L.); (D.D.-M.)
- Department of Medical Sciences, Fondazione Policlinico Tor Vergata, 00133 Rome, Italy
- Correspondence: ; Tel.: +39-(06)-2090-4666 or +39-(33)-773-5770; Fax: +39-(06)-20904668
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15
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Tseng JC, Chang YC, Huang CM, Hsu LC, Chuang TH. Therapeutic Development Based on the Immunopathogenic Mechanisms of Psoriasis. Pharmaceutics 2021; 13:pharmaceutics13071064. [PMID: 34371756 PMCID: PMC8308930 DOI: 10.3390/pharmaceutics13071064] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 07/01/2021] [Accepted: 07/07/2021] [Indexed: 12/16/2022] Open
Abstract
Psoriasis, a complex inflammatory autoimmune skin disorder that affects 2–3% of the global population, is thought to be genetically predetermined and induced by environmental and immunological factors. In the past decades, basic and clinical studies have significantly expanded knowledge on the molecular, cellular, and immunological mechanisms underlying the pathogenesis of psoriasis. Based on these pathogenic mechanisms, the current disease model emphasizes the role of aberrant Th1 and Th17 responses. Th1 and Th17 immune responses are regulated by a complex network of different cytokines, including TNF-α, IL-17, and IL-23; signal transduction pathways downstream to the cytokine receptors; and various activated transcription factors, including NF-κB, interferon regulatory factors (IRFs), and signal transducer and activator of transcriptions (STATs). The biologics developed to specifically target the cytokines have achieved a better efficacy and safety for the systemic management of psoriasis compared with traditional treatments. Nevertheless, the current therapeutics can only alleviate the symptoms; there is still no cure for psoriasis. Therefore, the development of more effective, safe, and affordable therapeutics for psoriasis is important. In this review, we discussed the current trend of therapeutic development for psoriasis based on the recent discoveries in the immune modulation of the inflammatory response in psoriasis.
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Affiliation(s)
- Jen-Chih Tseng
- Immunology Research Center, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan;
| | - Yung-Chi Chang
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei 10002, Taiwan;
| | - Chun-Ming Huang
- Department of Biomedical Sciences and Engineering, National Central University, Taoyuan 32001, Taiwan;
| | - Li-Chung Hsu
- Institute of Molecular Medicine, College of Medicine, National Taiwan University, Taipei 10002, Taiwan;
- Center of Precision Medicine, College of Medicine, National Taiwan University, Taipei 10002, Taiwan
- Correspondence: (L.-C.H.); (T.-H.C.); Tel.: +886-2-2312-3456 (ext. 65700) (L.-C.H.); +886-37-246-166 (ext. 37611) (T.-H.C.)
| | - Tsung-Hsien Chuang
- Immunology Research Center, National Health Research Institutes, Zhunan, Miaoli 35053, Taiwan;
- Correspondence: (L.-C.H.); (T.-H.C.); Tel.: +886-2-2312-3456 (ext. 65700) (L.-C.H.); +886-37-246-166 (ext. 37611) (T.-H.C.)
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16
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Nazari N, Jafari F, Ghalamfarsa G, Hadinia A, Atapour A, Ahmadi M, Dolati S, Rostamzadeh D. The emerging role of microRNA in regulating the mTOR signaling pathway in immune and inflammatory responses. Immunol Cell Biol 2021; 99:814-832. [PMID: 33988889 DOI: 10.1111/imcb.12477] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 05/10/2021] [Accepted: 05/10/2021] [Indexed: 01/01/2023]
Abstract
The mechanistic/mammalian target of rapamycin (mTOR) is considered to be an atypical protein kinase that plays a critical role in integrating different cellular and environmental inputs in the form of growth factors, nutrients and energy and, subsequently, in regulating different cellular events, including cell metabolism, survival, homeostasis, growth and cellular differentiation. Immunologically, mTOR is a critical regulator of immune function through integrating numerous signals from the immune microenvironment, which coordinates the functions of immune cells and T cell fate decisions. The crucial role of mTOR in immune responses has been lately even more appreciated. MicroRNAs (miRNAs) are endogenous, small, noncoding single-stranded RNAs that act as molecular regulators involved in multiple processes during immune cells development, homeostasis, activation and effector polarization. Several studies have recently indicated that a range of miRNAs are involved in regulating the phosphoinositide 3-kinase/protein kinase B/mTOR (PI3K/AKT/mTOR) signaling pathway by targeting multiple components of this signaling pathway and modulating the expression and function of these targets. Current evidence has revealed the interplay between miRNAs and the mTOR pathway circuits in various immune cell types. The expression of individual miRNA can affect the function of mTOR signaling to determine the cell fate decisions in immune responses through coordinating immune signaling and cell metabolism. Dysregulation of the mTOR pathway/miRNAs crosstalk has been reported in cancers and various immune-related diseases. Thus, expression profiles of dysregulated miRNAs could influence the mTOR pathway, resulting in the promotion of aberrant immunity. This review summarizes the latest information regarding the reciprocal role of the mTOR signaling pathway and miRNAs in orchestrating immune responses.
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Affiliation(s)
- Nazanin Nazari
- Shiraz Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farzaneh Jafari
- Department of Medical Genetics, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ghasem Ghalamfarsa
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Abolghasem Hadinia
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Amir Atapour
- Department of Medical Biotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Majid Ahmadi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sanam Dolati
- Physical Medicine and Rehabilitation Research Center, Aging Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Davood Rostamzadeh
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran.,Medicinal Plants Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
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17
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Ding X, Xiang W, Yi R, Huang X, Lin Q, He X. Neutralizing interferon-α blocks inflammation-mediated vascular injury via PI3K and AMPK in systemic lupus erythematosus. Immunology 2021; 164:372-385. [PMID: 34077562 DOI: 10.1111/imm.13379] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 04/12/2021] [Accepted: 05/10/2021] [Indexed: 01/27/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) play a key role in the initiation and amplification of systemic lupus erythematosus (SLE)-associated vascular injury. In this study, we found that dsDNA induced dose- and time-dependent increase in IFN-α and Toll-like receptor 7 (TLR7), TLR9 and IRF7 expression in pDCs. Co-cultured circulating endothelial cells (ECs) with activated pDCs significantly decreased proliferation, tube formation and migration in ECs. The elevated level of cellular IFN-α increased cell adhesion, promoted cell apoptosis, induced cell senescence and arrested cells at G0/G1 phase of endothelial progenitor cells (EPCs). Additionally, the co-culture system activated MAPK and inactivated PI3K. Pristane was used to establish a in vivo SLE-like mouse model. Importantly, we showed that INF-α-neutralizing antibody (IFN-α-NA) rescued all the changes induced by IFN-α in vitro and prevented vascular injury in pristane-induced SLE model in vivo. In conclusion, we confirmed that activated pDCs promoted vascular damage and the dysfunction of ECs/EPCs via IFN-α production. IFN-α-neutralizing antibody may be a clinical implication for preventing vascular injury. PI3K signalling and AMPK signalling were associated with SLE-associated vascular functions.
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Affiliation(s)
- Xuewei Ding
- Institute of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Laboratory of Pediatrics Nephrology, Institute of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Wei Xiang
- Hainan Maternal and Children's Medical Center, Haikou, China
| | - Ren Yi
- Institute of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Institute of Pediatrics, HaiKou Hospital of the Maternal and Child Health, Haikou, China
| | - Xiaoyan Huang
- Hainan Maternal and Children's Medical Center, Haikou, China
| | - Qiuyu Lin
- Hainan Maternal and Children's Medical Center, Haikou, China
| | - Xiaojie He
- Institute of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China.,Laboratory of Pediatrics Nephrology, Institute of Pediatrics, The Second Xiangya Hospital, Central South University, Changsha, China
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18
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Xing J, Zhang A, Du Y, Fang M, Minze LJ, Liu YJ, Li XC, Zhang Z. Identification of poly(ADP-ribose) polymerase 9 (PARP9) as a noncanonical sensor for RNA virus in dendritic cells. Nat Commun 2021; 12:2681. [PMID: 33976210 PMCID: PMC8113569 DOI: 10.1038/s41467-021-23003-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 04/09/2021] [Indexed: 01/17/2023] Open
Abstract
Innate immune cells are critical in protective immunity against viral infections, involved in sensing foreign viral nucleic acids. Here we report that the poly(ADP-ribose) polymerase 9 (PARP9), a member of PARP family, serves as a non-canonical sensor for RNA virus to initiate and amplify type I interferon (IFN) production. We find knockdown or deletion of PARP9 in human or mouse dendritic cells and macrophages inhibits type I IFN production in response to double strand RNA stimulation or RNA virus infection. Furthermore, mice deficient for PARP9 show enhanced susceptibility to infections with RNA viruses because of the impaired type I IFN production. Mechanistically, we show that PARP9 recognizes and binds viral RNA, with resultant recruitment and activation of the phosphoinositide 3-kinase (PI3K) and AKT3 pathway, independent of mitochondrial antiviral-signaling (MAVS). PI3K/AKT3 then activates the IRF3 and IRF7 by phosphorylating IRF3 at Ser385 and IRF7 at Ser437/438 mediating type I IFN production. Together, we reveal a critical role for PARP9 as a non-canonical RNA sensor that depends on the PI3K/AKT3 pathway to produce type I IFN. These findings may have important clinical implications in controlling viral infections and viral-induced diseases by targeting PARP9.
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Affiliation(s)
- Junji Xing
- Department of Surgery and Immunobiology and Transplant Science Center, Houston Methodist, Houston, TX, USA
| | - Ao Zhang
- Department of Surgery and Immunobiology and Transplant Science Center, Houston Methodist, Houston, TX, USA
- Department of Laboratory Medicine, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yong Du
- Department of Surgery and Immunobiology and Transplant Science Center, Houston Methodist, Houston, TX, USA
| | - Mingli Fang
- Department of Surgery and Immunobiology and Transplant Science Center, Houston Methodist, Houston, TX, USA
- Department of Molecular Biology, College of Basic Medical Sciences, Jilin University, Changchun, China
| | - Laurie J Minze
- Department of Surgery and Immunobiology and Transplant Science Center, Houston Methodist, Houston, TX, USA
| | | | - Xian Chang Li
- Department of Surgery and Immunobiology and Transplant Science Center, Houston Methodist, Houston, TX, USA
- Department of Surgery, Weill Cornell Medical College, Cornell University, New York, NY, USA
| | - Zhiqiang Zhang
- Department of Surgery and Immunobiology and Transplant Science Center, Houston Methodist, Houston, TX, USA.
- Department of Surgery, Weill Cornell Medical College, Cornell University, New York, NY, USA.
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19
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Cai M, Huang W, Hu X, Chen A, Zhou X. MEKK3 activates IRF7 to trigger a potent type I interferon induction in response to TLR7/9 signaling. Mol Immunol 2021; 134:183-191. [PMID: 33812250 DOI: 10.1016/j.molimm.2021.03.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 02/02/2021] [Accepted: 03/04/2021] [Indexed: 10/21/2022]
Abstract
Interferon regulatory factor 7 (IRF7) is a crucial regulator of type I interferons (IFNs) against pathogen infections and plays a significant role in the endosomal Toll-like receptor signaling (namely, TLR7 and TLR9) in plasmacytoid dendritic cells (pDCs). In this study, we identify MEKK3, one of the MAP3K kinase, as a potent stimulator of IRF7 upon cellular activation of the TLR7/9 signaling pathways to induce various type I IFNs. The knockdown of MEKK3 in vivo substantially impairs type I IFN induction and increases susceptibility to HSV-1 infection in mice. Overexpression of MEKK3 significantly activates IRF7 to trigger strong induction of type I IFNs, while cells deficient in MEKK3 expression show abrogated innate immune responses to TLR7/TLR9 ligands stimulation. We confirmed that the IFNs' induction is due to a MEKK3 and IRF7 interaction; it leads to the phosphorylation of IRF7 at multiple sites. Moreover, endogenous MEKK3 can bind and phosphorylate IRF7 after TLR9 activation by its specific ligand CpG DNA. It is the first time to report the role of MEKK3 on type I IFN, which indicates crosstalk between MAP3K activation and type I IFNs' induction in the endosomal Toll-like receptor pathways.
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Affiliation(s)
- Miaomiao Cai
- College of Life Sciences & Health, Wuhan University of Science & Technology, Wuhan, 430065, Hubei, China
| | - Wenwu Huang
- College of Life Sciences & Health, Wuhan University of Science & Technology, Wuhan, 430065, Hubei, China
| | - Xiaodong Hu
- College of Life Sciences & Health, Wuhan University of Science & Technology, Wuhan, 430065, Hubei, China
| | - Ao Chen
- College of Life Sciences & Health, Wuhan University of Science & Technology, Wuhan, 430065, Hubei, China
| | - Xiang Zhou
- College of Life Sciences & Health, Wuhan University of Science & Technology, Wuhan, 430065, Hubei, China.
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20
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Ah Kioon MD, Pierides M, Pannellini T, Lin G, Nathan CF, Barrat FJ. Noncytotoxic Inhibition of the Immunoproteasome Regulates Human Immune Cells In Vitro and Suppresses Cutaneous Inflammation in the Mouse. THE JOURNAL OF IMMUNOLOGY 2021; 206:1631-1641. [PMID: 33674446 DOI: 10.4049/jimmunol.2000951] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 01/27/2021] [Indexed: 12/15/2022]
Abstract
Inhibitors of the immunoproteasome (i-20S) have shown promise in mouse models of autoimmune diseases and allograft rejection. In this study, we used a novel inhibitor of the immunoproteasome, PKS3053, that is reversible, noncovalent, tight-binding, and highly selective for the β5i subunit of the i-20S to evaluate the role that i-20S plays in regulating immune responses in vitro and in vivo. In contrast to irreversible, less-selective inhibitors, PKS3053 did not kill any of the primary human cell types tested, including plasmacytoid dendritic cells, conventional dendritic cells, macrophages, and T cells, all of which expressed genes encoding both the constitutive proteasome (c-20S) and i-20S. PKS3053 reduced TLR-dependent activation of plasmacytoid dendritic cells, decreasing their maturation and IFN-α response and reducing their ability to activate allogenic T cells. In addition, PKS3053 reduced T cell proliferation directly and inhibited TLR-mediated activation of conventional dendritic cells and macrophages. In a mouse model of skin injury that shares some features of cutaneous lupus erythematosus, blocking i-20S decreased inflammation, cellular infiltration, and tissue damage. We conclude that the immunoproteasome is involved in the activation of innate and adaptive immune cells, that their activation can be suppressed with an i-20S inhibitor without killing them, and that selective inhibition of β5i holds promise as a potential therapy for inflammatory skin diseases such as psoriasis, cutaneous lupus erythematosus, and systemic sclerosis.
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Affiliation(s)
- Marie Dominique Ah Kioon
- Autoimmunity and Inflammation Program, Research Institute, Hospital for Special Surgery, New York, NY 10021; and
| | - Michael Pierides
- Autoimmunity and Inflammation Program, Research Institute, Hospital for Special Surgery, New York, NY 10021; and
| | - Tania Pannellini
- Autoimmunity and Inflammation Program, Research Institute, Hospital for Special Surgery, New York, NY 10021; and
| | - Gang Lin
- Department of Microbiology and Immunology, Weill Cornell Medical College, Cornell University, New York, NY 10021
| | - Carl F Nathan
- Department of Microbiology and Immunology, Weill Cornell Medical College, Cornell University, New York, NY 10021
| | - Franck J Barrat
- Autoimmunity and Inflammation Program, Research Institute, Hospital for Special Surgery, New York, NY 10021; and .,Department of Microbiology and Immunology, Weill Cornell Medical College, Cornell University, New York, NY 10021
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21
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Shigesaka M, Ito T, Inaba M, Imai K, Yamanaka H, Azuma Y, Tanaka A, Amuro H, Nishizawa T, Son Y, Satake A, Ozaki Y, Nomura S. Mycophenolic acid, the active form of mycophenolate mofetil, interferes with IRF7 nuclear translocation and type I IFN production by plasmacytoid dendritic cells. Arthritis Res Ther 2020; 22:264. [PMID: 33168076 PMCID: PMC7654586 DOI: 10.1186/s13075-020-02356-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 10/18/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Both humoral and cellular immune mechanisms are involved in the onset and progression of autoimmune responses in systemic lupus erythematosus (SLE). Plasmacytoid dendritic cells (pDCs) play a central role in the pathogenesis of SLE via the dysregulation of type I interferon (IFN) production; these cells act together with activated myeloid DCs (mDCs) to amplify the vicious pathogenic spiral of autoimmune disorders. Therefore, control of aberrant DC activation in SLE may provide an alternative treatment strategy against this disease. Mycophenolate mofetil (MMF), which has been used to treat lupus nephritis, specifically blocks the proliferation of B and T lymphocytes via inhibition of inosine-5-monophosphate dehydrogenase. Here, we focus on the effects of MMF in targeting DC functions, especially the IFN response of pDCs. METHODS We isolated human blood pDCs and mDCs by flow cytometry and examined the effect of mycophenolic acid (MPA), which is a metabolic product of MMF, on the toll-like receptor (TLR) ligand response of DC subsets. Additionally, we cultured pDCs with serum from SLE patients in the presence or absence of MPA and then examined the inhibitory function of MPA on SLE serum-induced IFN-α production. RESULTS We found that treatment with 1-10 μM of MPA (covering the clinical trough plasma concentration range) dose-dependently downregulated the expression of CD80 and CD86 on mDCs (but not pDCs) without inducing apoptosis, in response to R848 or CpG-ODN, respectively. Notably, in pDCs, MPA significantly suppressed IFN-α production with IRF7 nuclear translocation and repressed the AKT activity. In addition, MPA inhibited IL-12 production with STAT4 expression in mDCs. We further identified that MPA had an inhibitory effect on SLE serum-induced IFN-α production by pDCs. CONCLUSIONS Our data suggest that MPA can interrupt the vicious pathogenic spiral of autoimmune disorders by regulating the function of DC subsets. This work unveiled a novel mechanism for the therapeutic ability of MMF against SLE.
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Affiliation(s)
- Minoru Shigesaka
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Tomoki Ito
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan.
| | - Muneo Inaba
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Kai Imai
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Hideki Yamanaka
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Yoshiko Azuma
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Akihiro Tanaka
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Hideki Amuro
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Tohru Nishizawa
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Yonsu Son
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Atsushi Satake
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Yoshio Ozaki
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
| | - Shosaku Nomura
- First Department of Internal Medicine, Kansai Medical University, 2-5-1 Shin-machi, Hirakata City, Osaka, 573-1010, Japan
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22
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Rizzo C, Grasso G, Destro Castaniti GM, Ciccia F, Guggino G. Primary Sjogren Syndrome: Focus on Innate Immune Cells and Inflammation. Vaccines (Basel) 2020; 8:vaccines8020272. [PMID: 32503132 PMCID: PMC7349953 DOI: 10.3390/vaccines8020272] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/28/2020] [Accepted: 05/29/2020] [Indexed: 12/17/2022] Open
Abstract
Primary Sjogren Syndrome (pSS) is a complex, multifactorial rheumatic disease that mainly targets salivary and lacrimal glands, inducing epithelitis. The cause behind the autoimmunity outbreak in pSS is still elusive; however, it seems related to an aberrant reaction to exogenous triggers such as viruses, combined with individual genetic pre-disposition. For a long time, autoantibodies were considered as the hallmarks of this disease; however, more recently the complex interplay between innate and adaptive immunity as well as the consequent inflammatory process have emerged as the main mechanisms of pSS pathogenesis. The present review will focus on innate cells and on the principal mechanisms of inflammation connected. In the first part, an overview of innate cells involved in pSS pathogenesis is provided, stressing in particular the role of Innate Lymphoid Cells (ILCs). Subsequently we have highlighted the main inflammatory pathways, including intra- and extra-cellular players. A better knowledge of such processes could determine the detection of new therapeutic targets that are a major need for pSS.
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Affiliation(s)
- Chiara Rizzo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Piazza delle Cliniche 2, 90110 Palermo, Italy; (C.R.); (G.G.); (G.M.D.C.)
| | - Giulia Grasso
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Piazza delle Cliniche 2, 90110 Palermo, Italy; (C.R.); (G.G.); (G.M.D.C.)
| | - Giulia Maria Destro Castaniti
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Piazza delle Cliniche 2, 90110 Palermo, Italy; (C.R.); (G.G.); (G.M.D.C.)
| | - Francesco Ciccia
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, Via L. De Crecchio 7, 80138 Naples, Italy;
| | - Giuliana Guggino
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Rheumatology Section, University of Palermo, Piazza delle Cliniche 2, 90110 Palermo, Italy; (C.R.); (G.G.); (G.M.D.C.)
- Correspondence: ; Tel.: +39-091-6552260
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23
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Erlich JR, To EE, Liong S, Brooks R, Vlahos R, O'Leary JJ, Brooks DA, Selemidis S. Targeting Evolutionary Conserved Oxidative Stress and Immunometabolic Pathways for the Treatment of Respiratory Infectious Diseases. Antioxid Redox Signal 2020; 32:993-1013. [PMID: 32008371 PMCID: PMC7426980 DOI: 10.1089/ars.2020.8028] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Significance: Up until recently, metabolism has scarcely been referenced in terms of immunology. However, emerging evidence has shown that immune cells undergo an adaptation of metabolic processes, known as the metabolic switch. This switch is key to the activation, and sustained inflammatory phenotype in immune cells, which includes the production of cytokines and reactive oxygen species (ROS) that underpin infectious diseases, respiratory and cardiovascular disease, neurodegenerative disease, as well as cancer. Recent Advances: There is a burgeoning body of evidence that immunometabolism and redox biology drive infectious diseases. For example, influenza A virus (IAV) utilizes endogenous ROS production via NADPH oxidase (NOX)2-containing NOXs and mitochondria to circumvent antiviral responses. These evolutionary conserved processes are promoted by glycolysis, the pentose phosphate pathway, and the tricarboxylic acid (TCA) cycle that drive inflammation. Such metabolic products involve succinate, which stimulates inflammation through ROS-dependent stabilization of hypoxia-inducible factor-1α, promoting interleukin-1β production by the inflammasome. In addition, itaconate has recently gained significant attention for its role as an anti-inflammatory and antioxidant metabolite of the TCA cycle. Critical Issues: The molecular mechanisms by which immunometabolism and ROS promote viral and bacterial pathology are largely unknown. This review will provide an overview of the current paradigms with an emphasis on the roles of immunometabolism and ROS in the context of IAV infection and secondary complications due to bacterial infection such as Streptococcus pneumoniae. Future Directions: Molecular targets based on metabolic cell processes and ROS generation may provide novel and effective therapeutic strategies for IAV and associated bacterial superinfections.
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Affiliation(s)
- Jonathan R. Erlich
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
| | - Eunice E. To
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
| | - Stella Liong
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
| | - Robert Brooks
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, Australia
| | - Ross Vlahos
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
| | - John J. O'Leary
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, Australia
- Department of Histopathology, Trinity College Dublin, Dublin, Ireland
- Sir Patrick Dun's Laboratory, Central Pathology Laboratory, St James's Hospital, Dublin, Ireland
| | - Doug A. Brooks
- School of Pharmacy and Medical Sciences, University of South Australia Cancer Research Institute, University of South Australia, Adelaide, Australia
- Molecular Pathology Laboratory, Coombe Women and Infants' University Hospital, Dublin, Ireland
| | - Stavros Selemidis
- Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, Australia
- Address correspondence to: Prof. Stavros Selemidis, Program in Chronic Infectious and Inflammatory Diseases, Oxidant and Inflammation Biology Group, School of Health and Biomedical Sciences, College of Science, Engineering & Health, RMIT University, Bundoora, VIC 3083, Australia
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24
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Hu Z, Pan Y, Cheng A, Zhang X, Wang M, Chen S, Zhu D, Liu M, Yang Q, Wu Y, Zhao X, Huang J, Zhang S, Mao S, Ou X, Yu Y, Zhang L, Liu Y, Tian B, Pan L, Rehman MU, Yin Z, Jia R. Autophagy Is a Potential Therapeutic Target Against Duck Tembusu Virus Infection in vivo. Front Cell Infect Microbiol 2020; 10:155. [PMID: 32351903 PMCID: PMC7174708 DOI: 10.3389/fcimb.2020.00155] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 03/24/2020] [Indexed: 12/18/2022] Open
Abstract
Duck tembusu virus (DTMUV) is newly emerged in poultry and causes great losses to the breeding industry in China and neighboring countries. Effective antiviral strategies are still being studied. Autophagy is a cellular degradative pathway, and our lab's previous data show that autophagy promotes DTMUV replication in vitro. To study the role of autophagy further in vivo, we utilized ducks as the animal model to investigate the autophagy responses in DTMUV-targeted tissues. And also, we utilized autophagy regulators, including Rapamycin (Rapa) as the autophagy enhancer, 3-Methyladenine (3-MA) and Chloroquine (CQ) as the autophagy inhibitors, to adjust the host autophagic levels and then study the effects of autophagy on tissue damages and virus replication. As a result, we first found DTMUV infection trigged autophagy and autophagy regulator treatments regulated autophagy levels successfully in duck spleens and brains. Next, we found that autophagy inhibitors inhibited DTMUV replication and alleviated DTMUV-induced pathological symptoms, whereas the autophagy inducer treatment led to the opposite effects. And we also found that autophagic regulation was correlated with the expression of innate immune genes, including pattern recognition receptors, type I interferons, and cytokines, and caused different effects in different tissues. In summary, we demonstrated that autophagy facilitated DTMUV replication, aggravated the developments of pathological symptoms and possibly counteracts the host's innate immunity response in vivo.
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Affiliation(s)
- Zhiqiang Hu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Yuhong Pan
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Anchun Cheng
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Xingcui Zhang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Mingshu Wang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Shun Chen
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Dekang Zhu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Mafeng Liu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Qiao Yang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Ying Wu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Xinxin Zhao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Juan Huang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Shaqiu Zhang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Sai Mao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Xumin Ou
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Yanling Yu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Ling Zhang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Yunya Liu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Bin Tian
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Leichang Pan
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Mujeeb Ur Rehman
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Zhongqiong Yin
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
| | - Renyong Jia
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, China.,Avian Disease Research Center, College of Veterinary Medicine of Sichuan Agricultural University, Wenjiang, China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, China
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25
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Hillen MR, Chouri E, Wang M, Blokland SLM, Hartgring SAY, Concepcion AN, Kruize AA, Burgering BMT, Rossato M, van Roon JAG, Radstake TRDJ. Dysregulated miRNome of plasmacytoid dendritic cells from patients with Sjögren's syndrome is associated with processes at the centre of their function. Rheumatology (Oxford) 2020; 58:2305-2314. [PMID: 31131409 PMCID: PMC6880856 DOI: 10.1093/rheumatology/kez195] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 04/16/2019] [Indexed: 02/07/2023] Open
Abstract
Objective A considerable body of evidence supports a role for type-I IFN in the pathogenesis of primary SS (pSS). As plasmacytoid dendritic cells (pDCs) are a major source of type-I IFN, we investigated their molecular regulation by measuring expression of a large set of miRNAs. Methods pDCs were isolated from peripheral blood of pSS patients (n = 30) and healthy controls (n = 16) divided into two independent cohorts (discovery and replication). Screening of 758 miRNAs was assessed by an OpenArray quantitative PCR-based technique; replication of a set of identified miRNAs was performed by custom array. Functional annotation of miRNA targets was performed using pathway enrichment. Novel targets of miR-29a and miR-29c were identified using a proteomic approach (stable isotope labelling with amino acids in cell culture). Results In the discovery cohort, 20 miRNAs were differentially expressed in pSS pDCs compared with healthy control pDCs. Of these, differential expression of 10 miRNAs was confirmed in the replication cohort. The dysregulated miRNAs were involved in phosphoinositide 3-kinase-Ak strain transforming and mammalian target of rapamycin signalling, as well as regulation of cell death. In addition, a set of novel protein targets of miR-29a and miR-29c were identified, including five targets that were regulated by both miRs. Conclusion The dysregulated miRNome in pDCs of patients with pSS is associated with aberrant regulation of processes at the centre of pDC function, including type-I IFN production and cell death. As miR-29a and miR-29c are pro-apoptotic factors and several of the novel targets identified here are regulators of apoptosis, their downregulation in patients with pSS is associated with enhanced pDC survival.
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Affiliation(s)
- Maarten R Hillen
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Eleni Chouri
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Maojie Wang
- Department of Molecular Cancer Research, Center Molecular Medicine, Oncode Institute, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Sofie L M Blokland
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Sarita A Y Hartgring
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Arno N Concepcion
- Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Aike A Kruize
- Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Boudewijn M T Burgering
- Department of Molecular Cancer Research, Center Molecular Medicine, Oncode Institute, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Marzia Rossato
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Biotechnology, University of Verona, Verona, Italy
| | - Joel A G van Roon
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Timothy R D J Radstake
- Laboratory of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
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26
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Greenberg EN, Marshall ME, Jin S, Venkatesh S, Dragan M, Tsoi LC, Gudjonsson JE, Nie Q, Takahashi JS, Andersen B. Circadian control of interferon-sensitive gene expression in murine skin. Proc Natl Acad Sci U S A 2020; 117:5761-5771. [PMID: 32132203 PMCID: PMC7084068 DOI: 10.1073/pnas.1915773117] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
The circadian clock coordinates a variety of immune responses with signals from the external environment to promote survival. We investigated the potential reciprocal relationship between the circadian clock and skin inflammation. We treated mice topically with the Toll-like receptor 7 (TLR7) agonist imiquimod (IMQ) to activate IFN-sensitive gene (ISG) pathways and induce psoriasiform inflammation. IMQ transiently altered core clock gene expression, an effect mirrored in human patient psoriatic lesions. In mouse skin 1 d after IMQ treatment, ISGs, including the key ISG transcription factor IFN regulatory factor 7 (Irf7), were more highly induced after treatment during the day than the night. Nuclear localization of phosphorylated-IRF7 was most prominently time-of-day dependent in epidermal leukocytes, suggesting that these cell types play an important role in the diurnal ISG response to IMQ. Mice lacking Bmal1 systemically had exacerbated and arrhythmic ISG/Irf7 expression after IMQ. Furthermore, daytime-restricted feeding, which affects the phase of the skin circadian clock, reverses the diurnal rhythm of IMQ-induced ISG expression in the skin. These results suggest a role for the circadian clock, driven by BMAL1, as a negative regulator of the ISG response, and highlight the finding that feeding time can modulate the skin immune response. Since the IFN response is essential for the antiviral and antitumor effects of TLR activation, these findings are consistent with the time-of-day-dependent variability in the ability to fight microbial pathogens and tumor initiation and offer support for the use of chronotherapy for their treatment.
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Affiliation(s)
| | | | - Suoqin Jin
- Department of Mathematics, University of California, Irvine, CA 92697
- Center for Complex Biological Systems, University of California, Irvine, CA 92697
| | - Sanan Venkatesh
- Department of Biological Chemistry, University of California, Irvine, CA 92697
| | - Morgan Dragan
- Department of Biological Chemistry, University of California, Irvine, CA 92697
| | - Lam C Tsoi
- Department of Dermatology, University of Michigan, Ann Arbor, MI 48109
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109
- Department of Biostatistics, University of Michigan, Ann Arbor, MI 48109
| | | | - Qing Nie
- Department of Mathematics, University of California, Irvine, CA 92697
- Center for Complex Biological Systems, University of California, Irvine, CA 92697
- Department of Developmental and Cell Biology, University of California, Irvine, CA 92697
| | - Joseph S Takahashi
- Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX 75390
- Department of Neuroscience, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Bogi Andersen
- Department of Biological Chemistry, University of California, Irvine, CA 92697;
- Center for Complex Biological Systems, University of California, Irvine, CA 92697
- Department of Medicine, Division of Endocrinology, School of Medicine, University of California, Irvine, CA 92697
- Institute for Genomics and Bioinformatics, University of California, Irvine, CA 92697
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27
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Fujita A, Kan-O K, Tonai K, Yamamoto N, Ogawa T, Fukuyama S, Nakanishi Y, Matsumoto K. Inhibition of PI3Kδ Enhances Poly I:C-Induced Antiviral Responses and Inhibits Replication of Human Metapneumovirus in Murine Lungs and Human Bronchial Epithelial Cells. Front Immunol 2020; 11:432. [PMID: 32218789 PMCID: PMC7079687 DOI: 10.3389/fimmu.2020.00432] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 02/25/2020] [Indexed: 12/20/2022] Open
Abstract
Viral infections of the airway can exacerbate respiratory diseases, such as asthma or chronic obstructive pulmonary disease (COPD), and accelerate disease progression. Phosphoinositide 3-kinase (PI3K)δ, a class 1A PI3K, has been studied as a potential target for achieving anti-oncogenic and anti-inflammatory effects. However, the role of PI3Kδ in antiviral responses is poorly understood. Using a synthetic double-stranded RNA poly I:C and a selective PI3Kδ inhibitor IC87114, we investigated the role of PI3Kδ signaling in poly I:C-induced expression of the T lymphocyte-inhibitory molecule programmed death 1 ligand 1 (PD-L1), inflammatory responses and antiviral interferon (IFN) responses. C57BL/6N mice were treated with IC87114 or vehicle by intratracheal (i.t.) instillation followed by i.t. administration of poly I:C. Poly I:C increased PD-L1 expression on epithelial cells, lymphocytes, macrophages, and neutrophils in the lungs and IC87114 suppressed poly I:C-induced PD-L1 expression on epithelial cells and neutrophils possibly via inhibition of the Akt/mTOR signaling pathway. IC87114 also attenuated poly I:C-induced increases in numbers of total cells, macrophages, neutrophils and lymphocytes, as well as levels of KC, IL-6 and MIP-1β in bronchoalveolar lavage fluid. Gene expression of IFNβ, IFNλ2 and IFN-stimulated genes (ISGs) were upregulated in response to poly I:C and a further increase in gene expression was observed following IC87114 treatment. In addition, IC87114 enhanced poly I:C-induced phosphorylation of IRF3. We assessed the effects of IC87114 on human primary bronchial epithelial cells (PBECs). IC87114 decreased poly I:C-induced PD-L1 expression on PBECs and secretion of IL-6 and IL-8 into culture supernatants. IC87114 further enhanced poly I:C- induced increases in the concentrations of IFNβ and IFNλ1/3 in culture supernatants as well as upregulated gene expression of ISGs in PBECs. Similar results were obtained in PBECs transfected with siRNA targeting the PIK3CD gene encoding PI3K p110δ, and stimulated with poly I:C. In human metapneumovirus (hMPV) infection of PBECs, IC87114 suppressed hMPV-induced PD-L1 expression and reduced viral replication without changing the production levels of IFNβ and IFNλ1/3 in culture supernatants. These data suggest that IC87114 may promote virus elimination and clearance through PD-L1 downregulation and enhanced antiviral IFN responses, preventing prolonged lung inflammation, which exacerbates asthma and COPD.
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Affiliation(s)
- Akitaka Fujita
- Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Keiko Kan-O
- Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Endoscopic Diagnostics and Therapeutics, Kyushu University Hospital, Fukuoka, Japan
| | - Ken Tonai
- Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Division of Intensive Care, Department of Anesthesiology and Intensive Care Medicine, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Norio Yamamoto
- Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomohiro Ogawa
- Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Satoru Fukuyama
- Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoichi Nakanishi
- Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Koichiro Matsumoto
- Research Institute for Diseases of the Chest, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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28
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Saenwongsa W, Nithichanon A, Chittaganpitch M, Buayai K, Kewcharoenwong C, Thumrongwilainet B, Butta P, Palaga T, Takahashi Y, Ato M, Lertmemongkolchai G. Metformin-induced suppression of IFN-α via mTORC1 signalling following seasonal vaccination is associated with impaired antibody responses in type 2 diabetes. Sci Rep 2020; 10:3229. [PMID: 32094377 PMCID: PMC7039947 DOI: 10.1038/s41598-020-60213-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 02/07/2020] [Indexed: 12/22/2022] Open
Abstract
Diabetes mellitus (DM) patients are at an increased risk of complications following influenza-virus infection, seasonal vaccination (SV) is recommended. However, SV with trivalent influenza vaccine (TIV) can induce antibody and type-I interferon (IFN) responses, and the effect of anti-DM treatment on these responses is incompletely understood. We evaluated the antibody response and IFN-α expression in individuals with and without type 2 DM (T2DM) following SV, and examined the effects on anti-DM treatment. TIV elicited sero-protection in all groups, but antibody persistency was <8 months, except for the antibody response to B-antigens in non-DM. T2DM impaired the IgG avidity index, and T2DM showed a significantly decreased response against H1N1 and H3N2, in addition to delaying and reducing haemagglutination-inhibition persistency against influenza B-antigens in DM groups treated with metformin (Met-DM) or glibenclamide (GB-DM). Following TIV, the Met-DM and GB-DM groups exhibited reduced IFN-α expression upon stimulation with whole- and split-virion influenza vaccines. Suppression of IFN-α expression in the Met-DM group was associated with a reduction in the mechanistic target of rapamycin complex-1 pathway and impaired IgG avidity index. Thus, single-dose TIV each year might not be suitable for T2DM. Our data could aid the development of an efficacious influenza vaccine for T2DM.
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Affiliation(s)
- Wipawee Saenwongsa
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.,Disease Prevention and Control Region 10th, Ubonratchathani, Ministry of Public Health, Mueang Nonthaburi, Thailand
| | - Arnone Nithichanon
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Malinee Chittaganpitch
- National Influenza Centre, Department of Medical Science, Ministry of Public Health, Mueang Nonthaburi, Thailand
| | - Kampaew Buayai
- National Influenza Centre, Department of Medical Science, Ministry of Public Health, Mueang Nonthaburi, Thailand
| | - Chidchamai Kewcharoenwong
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | | | - Patcharavadee Butta
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Tanapat Palaga
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | | | - Manabu Ato
- National Institute of Infectious Diseases, Tokyo, Japan
| | - Ganjana Lertmemongkolchai
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand.
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29
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30
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Lima BHF, Marques PE, Gomides LF, Mattos MS, Kraemer L, Queiroz-Junior CM, Lennon M, Hirsch E, Russo RC, Menezes GB, Hessel EM, Amour A, Teixeira MM. Converging TLR9 and PI3Kgamma signaling induces sterile inflammation and organ damage. Sci Rep 2019; 9:19085. [PMID: 31836766 PMCID: PMC6910931 DOI: 10.1038/s41598-019-55504-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 11/24/2019] [Indexed: 12/13/2022] Open
Abstract
Toll-like receptor 9 (TLR9) and Phosphatidylinositol-3-kinase gamma (PI3Kγ) are very important effectors of the immune response, however, the importance of such crosstalk for disease development is still a matter of discussion. Here we show that PI3Kγ is required for immune responses in which TLR9 is a relevant trigger. We demonstrate the requirement of PI3Kγ for TLR9-induced inflammation in a model of CpG-induced pleurisy. Such requirement was further observed in inflammatory models where DNA sensing via TLR9 contributes to disease, such as silicosis and drug-induced liver injury. Using adoptive transfer, we demonstrate that PI3Kγ is important not only in leukocytes but also in parenchymal cells for the progression of inflammation. We demonstrate this crosstalk between TLR9 and PI3Kγ in vitro using human PBMCs. The inhibition of PI3Kγ in CpG-stimulated PBMCs resulted in reduction of both cytokine production and phosphorylated Akt. Therefore, drugs that target PI3Kγ have the potential to treat diseases mediated by excessive TLR9 signalling.
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Affiliation(s)
- Braulio Henrique Freire Lima
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Pedro Elias Marques
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lindisley Ferreira Gomides
- Center for Gastrointestinal Biology, Instituto de Ciências Biológicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Matheus Silvério Mattos
- Physiology and Biophysics/Instituto de Ciencias Biologicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lucas Kraemer
- Physiology and Biophysics/Instituto de Ciencias Biologicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Celso M Queiroz-Junior
- Departament of Morphology, Institute of Biological Sciences, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mark Lennon
- Target Sciences, GlaxoSmithKline, Stevenage, Hertfordshire, Stevenage, United Kingdom
| | - Emilio Hirsch
- Department ot Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Remo Castro Russo
- Physiology and Biophysics/Instituto de Ciencias Biologicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Instituto de Ciências Biológicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Edith M Hessel
- Refractory Respiratory Inflammation DPU, GlaxoSmithKline, Hertfordshire, Stevenage, United Kingdom
| | - Augustin Amour
- Refractory Respiratory Inflammation DPU, GlaxoSmithKline, Hertfordshire, Stevenage, United Kingdom
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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31
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Barrat FJ, Crow MK, Ivashkiv LB. Interferon target-gene expression and epigenomic signatures in health and disease. Nat Immunol 2019; 20:1574-1583. [PMID: 31745335 PMCID: PMC7024546 DOI: 10.1038/s41590-019-0466-2] [Citation(s) in RCA: 263] [Impact Index Per Article: 52.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 07/10/2019] [Indexed: 02/06/2023]
Abstract
Multiple type I interferons and interferon-γ (IFN-γ) are expressed under physiological conditions and are increased by stress and infections, and in autoinflammatory and autoimmune diseases. Interferons activate the Jak-STAT signaling pathway and induce overlapping patterns of expression, called 'interferon signatures', of canonical interferon-stimulated genes (ISGs) encoding molecules important for antiviral responses, antigen presentation, autoimmunity and inflammation. It has now become clear that interferons also induce an 'interferon epigenomic signature' by activating latent enhancers and 'bookmarking' chromatin, thus reprogramming cell responses to environmental cues. The interferon epigenomic signature affects ISGs and other gene sets, including canonical targets of the transcription factor NF-κB that encode inflammatory molecules, and is involved in the priming of immune cells, tolerance and the training of innate immune memory. Here we review the mechanisms through which interferon signatures and interferon epigenomic signatures are generated, as well as the expression and functional consequences of these signatures in homeostasis and autoimmune diseases, including systemic lupus erythematosus, rheumatoid arthritis and systemic sclerosis.
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Affiliation(s)
- Franck J Barrat
- Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
- Department of Microbiology and Immunology, Weill Cornell Medicine, New York, NY, USA
- Immunology and Microbial Pathogenesis Program, Weill Cornell Medicine, New York, NY, USA
| | - Mary K Crow
- Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA
- Immunology and Microbial Pathogenesis Program, Weill Cornell Medicine, New York, NY, USA
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Lionel B Ivashkiv
- Research Institute and David Z. Rosensweig Genomics Research Center, Hospital for Special Surgery, New York, NY, USA.
- Immunology and Microbial Pathogenesis Program, Weill Cornell Medicine, New York, NY, USA.
- Department of Medicine, Weill Cornell Medicine, New York, NY, USA.
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32
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Baturcam E, Vollmer S, Schlüter H, Maciewicz RA, Kurian N, Vaarala O, Ludwig S, Cunoosamy DM. MEK inhibition drives anti-viral defence in RV but not RSV challenged human airway epithelial cells through AKT/p70S6K/4E-BP1 signalling. Cell Commun Signal 2019; 17:78. [PMID: 31319869 PMCID: PMC6639958 DOI: 10.1186/s12964-019-0378-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 05/29/2019] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The airway epithelium is a major target tissue in respiratory infections, and its antiviral response is mainly orchestrated by the interferon regulatory factor-3 (IRF3), which subsequently induces type I (β) and III (λ) interferon (IFN) signalling. Dual specificity mitogen-activated protein kinase kinase (MEK) pathway contributes to epithelial defence, but its role in the regulation of IFN response in human primary airway epithelial cells (AECs) is not fully understood. Here, we studied the impact of a small-molecule inhibitor (MEKi) on the IFN response following challenge with two major respiratory viruses rhinovirus (RV2) and respiratory syncytial virus (RSVA2) and a TLR3 agonist, poly(I:C). METHODS The impact of MEKi on viral load and IFN response was evaluated in primary AECs with or without a neutralising antibody against IFN-β. Quantification of viral load was determined by live virus assay and absolute quantification using qRT-PCR. Secretion of cytokines was determined by AlphaLISA/ELISA and expression of interferon-stimulated genes (ISGs) was examined by qRT-PCR and immunoblotting. A poly(I:C) model was also used to further understand the molecular mechanism by which MEK controls IFN response. AlphaLISA, siRNA-interference, immunoblotting, and confocal microscopy was used to investigate the effect of MEKi on IRF3 activation and signalling. The impact of MEKi on ERK and AKT signalling was evaluated by immunoblotting and AlphaLISA. RESULTS Here, we report that pharmacological inhibition of MEK pathway augments IRF3-driven type I and III IFN response in primary human AECs. MEKi induced activation of PI3K-AKT pathway, which was associated with phosphorylation/inactivation of the translational repressor 4E-BP1 and activation of the protein synthesis regulator p70 S6 kinase, two critical translational effectors. Elevated IFN-β response due to MEKi was also attributed to decreased STAT3 activation, which consequently dampened expression of the transcriptional repressor of IFNB1 gene, PRDI-BF1. Augmented IFN response translated into inhibition of rhinovirus 2 replication in primary AECs but not respiratory syncytial virus A2. CONCLUSIONS Our findings unveil MEK as a key molecular mechanism by which rhinovirus dampens the epithelial cell's antiviral response. Our study provides a better understanding of the role of signalling pathways in shaping the antiviral response and suggests the use of MEK inhibitors in anti-viral therapy against RV.
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Affiliation(s)
- Engin Baturcam
- Early Respiratory, Inflammation & Autoimmunity, R&D BioPharmaceuticals, AstraZeneca, Gothenburg, Sweden.
| | - Stefan Vollmer
- Early Respiratory, Inflammation & Autoimmunity, R&D BioPharmaceuticals, AstraZeneca, Gothenburg, Sweden
| | - Holger Schlüter
- Early Respiratory, Inflammation & Autoimmunity, R&D BioPharmaceuticals, AstraZeneca, Gothenburg, Sweden
| | - Rose A Maciewicz
- Early Respiratory, Inflammation & Autoimmunity, R&D BioPharmaceuticals, AstraZeneca, Gothenburg, Sweden
| | - Nisha Kurian
- Precision Medicine, R&D Oncology, AstraZeneca, Gothenburg, Sweden
| | - Outi Vaarala
- Early Respiratory, Inflammation & Autoimmunity, R&D BioPharmaceuticals, Gaithersburg, USA
| | - Stephan Ludwig
- Institute of Virology Muenster, Westfaelische Wilhelms-University Muenster, Muenster, Germany
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33
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Enhanced susceptibility to chemically induced colitis caused by excessive endosomal TLR signaling in LRBA-deficient mice. Proc Natl Acad Sci U S A 2019; 116:11380-11389. [PMID: 31097594 DOI: 10.1073/pnas.1901407116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
LPS-responsive beige-like anchor (LRBA) protein deficiency in humans causes immune dysregulation resulting in autoimmunity, inflammatory bowel disease (IBD), hypogammaglobulinemia, regulatory T (Treg) cell defects, and B cell functional defects, but the cellular and molecular mechanisms responsible are incompletely understood. In an ongoing forward genetic screen for N-ethyl-N-nitrosourea (ENU)-induced mutations that increase susceptibility to dextran sodium sulfate (DSS)-induced colitis in mice, we identified two nonsense mutations in Lrba Although Treg cells have been a main focus in LRBA research to date, we found that dendritic cells (DCs) contribute significantly to DSS-induced intestinal inflammation in LRBA-deficient mice. Lrba -/- DCs exhibited excessive IRF3/7- and PI3K/mTORC1-dependent signaling and type I IFN production in response to the stimulation of the Toll-like receptors (TLRs) 3, TLR7, and TLR9. Substantial reductions in cytokine expression and sensitivity to DSS in LRBA-deficient mice were caused by knockout of Unc93b1, a chaperone necessary for trafficking of TLR3, TLR7, and TLR9 to endosomes. Our data support a function for LRBA in limiting endosomal TLR signaling and consequent intestinal inflammation.
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34
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Chu T, Ni M, Chen C, Akilesh S, Hamerman JA. Cutting Edge: BCAP Promotes Lupus-like Disease and TLR-Mediated Type I IFN Induction in Plasmacytoid Dendritic Cells. THE JOURNAL OF IMMUNOLOGY 2019; 202:2529-2534. [PMID: 30936294 DOI: 10.4049/jimmunol.1801267] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 03/06/2019] [Indexed: 01/13/2023]
Abstract
Systemic lupus erythematosus severity correlates with elevated serum levels of type I IFNs, cytokines produced in large quantities by plasmacytoid dendritic cells (pDC) in response to engagement of TLR7 and TLR9 with endocytosed nucleic acids. B cell adaptor for PI3K (BCAP) promoted many aspects of TLR7-driven lupus-like disease, including Isg15 and Ifit1 expression in blood and an immature pDC phenotype associated with higher IFN production. BCAP-/- mice produced significantly less serum IFN-α than wild-type mice after injection of TLR9 agonist, and BCAP promoted TLR7 and TLR9-induced IFN-α production specifically in pDC. TLR-induced IFN-α production in pDC requires DOCK2-mediated activation of Rac1 leading to activation of IKKα, a mechanism we show was dependent on BCAP. BCAP-/- pDC had decreased actin polymerization and Rac1 activation and reduced IKKα phosphorylation upon TLR9 stimulation. We show a novel role for BCAP in promoting TLR-induced IFN-α production in pDC and in systemic lupus erythematosus pathogenesis.
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Affiliation(s)
- Talyn Chu
- Immunology Program, Benaroya Research Institute, Seattle, WA 98109.,Department of Immunology, University of Washington, Seattle, WA 98109; and
| | - Minjian Ni
- Immunology Program, Benaroya Research Institute, Seattle, WA 98109
| | - Chunmo Chen
- Immunology Program, Benaroya Research Institute, Seattle, WA 98109.,Department of Immunology, University of Washington, Seattle, WA 98109; and
| | - Shreeram Akilesh
- Department of Pathology, University of Washington, Seattle, WA 98195
| | - Jessica A Hamerman
- Immunology Program, Benaroya Research Institute, Seattle, WA 98109; .,Department of Immunology, University of Washington, Seattle, WA 98109; and
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35
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Raieli S, Trichot C, Korniotis S, Pattarini L, Soumelis V. TLR1/2 orchestrate human plasmacytoid predendritic cell response to gram+ bacteria. PLoS Biol 2019; 17:e3000209. [PMID: 31017904 PMCID: PMC6481764 DOI: 10.1371/journal.pbio.3000209] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 03/19/2019] [Indexed: 12/12/2022] Open
Abstract
Gram+ infections are worldwide life-threatening diseases in which the pathological role of type I interferon (IFN) has been highlighted. Plasmacytoid predendritic cells (pDCs) produce high amounts of type I IFN following viral sensing. Despite studies suggesting that pDCs respond to bacteria, the mechanisms underlying bacterial sensing in pDCs are unknown. We show here that human primary pDCs express toll-like receptor 1 (TLR1) and 2 (TLR2) and respond to bacterial lipoproteins. We demonstrated that pDCs differentially respond to gram+ bacteria through the TLR1/2 pathway. Notably, up-regulation of costimulatory molecules and pro-inflammatory cytokines was TLR1 dependent, whereas type I IFN secretion was TLR2 dependent. Mechanistically, we demonstrated that these differences relied on diverse signaling pathways activated by TLR1/2. MAPK and NF-κB pathways were engaged by TLR1, whereas the Phosphoinositide 3-kinase (PI3K) pathway was activated by TLR2. This dichotomy was reflected in a different role of TLR2 and TLR1 in pDC priming of naïve cluster of differentiation 4+ (CD4+) T cells, and T helper (Th) cell differentiation. This work provides the rationale to explore and target pDCs in bacterial infection.
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Affiliation(s)
- Salvatore Raieli
- Institut Curie, Centre de Recherche, PSL Research University, Paris, France
- INSERM U932, Immunity and Cancer, Paris, France
| | - Coline Trichot
- Institut Curie, Centre de Recherche, PSL Research University, Paris, France
- INSERM U932, Immunity and Cancer, Paris, France
| | - Sarantis Korniotis
- Institut Curie, Centre de Recherche, PSL Research University, Paris, France
- INSERM U932, Immunity and Cancer, Paris, France
| | - Lucia Pattarini
- Institut Curie, Centre de Recherche, PSL Research University, Paris, France
- INSERM U932, Immunity and Cancer, Paris, France
| | - Vassili Soumelis
- Institut Curie, Centre de Recherche, PSL Research University, Paris, France
- INSERM U932, Immunity and Cancer, Paris, France
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36
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Bodewes ILA, Björk A, Versnel MA, Wahren-Herlenius M. Innate immunity and interferons in the pathogenesis of Sjögren's syndrome. Rheumatology (Oxford) 2019; 60:2561-2573. [PMID: 30770713 DOI: 10.1093/rheumatology/key360] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 10/13/2018] [Indexed: 12/12/2022] Open
Abstract
Primary SS (pSS) is a rheumatic disease characterized by an immune-mediated exocrinopathy, resulting in severe dryness of eyes and mouth. Systemic symptoms include fatigue and joint pain and a subset of patients develop more severe disease with multi-organ involvement. Accumulating evidence points to involvement of innate immunity and aberrant activity of the type I IFN system in both the initiation and propagation of this disease. Analysis of the activity of IFN-inducible genes has evidenced that more than half of pSS patients present with a so-called 'type I IFN signature'. In this review, we examine activation of the IFN system in pSS patients and how this may drive autoimmunity through various immune cells. We further discuss the clinical value of assessing IFN activity as a biomarker in pSS patients and review novel therapies targeting IFN signalling and their potential use in pSS.
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Affiliation(s)
- Iris L A Bodewes
- Department of Immunology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Albin Björk
- Department of Medicine, Rheumatology Unit, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Marjan A Versnel
- Department of Immunology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Marie Wahren-Herlenius
- Department of Medicine, Rheumatology Unit, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
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37
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Rahaman O, Bhattacharya R, Liu CSC, Raychaudhuri D, Ghosh AR, Bandopadhyay P, Pal S, Goswami RP, Sircar G, Ghosh P, Ganguly D. Cutting Edge: Dysregulated Endocannabinoid-Rheostat for Plasmacytoid Dendritic Cell Activation in a Systemic Lupus Endophenotype. THE JOURNAL OF IMMUNOLOGY 2019; 202:1674-1679. [DOI: 10.4049/jimmunol.1801521] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 01/20/2019] [Indexed: 12/18/2022]
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38
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Reizis B. Plasmacytoid Dendritic Cells: Development, Regulation, and Function. Immunity 2019; 50:37-50. [PMID: 30650380 PMCID: PMC6342491 DOI: 10.1016/j.immuni.2018.12.027] [Citation(s) in RCA: 335] [Impact Index Per Article: 67.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/17/2018] [Accepted: 12/20/2018] [Indexed: 12/14/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) are a unique sentinel cell type that can detect pathogen-derived nucleic acids and respond with rapid and massive production of type I interferon. This review summarizes our current understanding of pDC biology, including transcriptional regulation, heterogeneity, role in antiviral immune responses, and involvement in immune pathology, particularly in autoimmune diseases, immunodeficiency, and cancer. We also highlight the remaining gaps in our knowledge and important questions for the field, such as the molecular basis of unique interferon-producing capacity of pDCs. A better understanding of cell type-specific positive and negative control of pDC function should pave the way for translational applications focused on this immune cell type.
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Affiliation(s)
- Boris Reizis
- Department of Pathology and Department of Medicine, New York University School of Medicine, New York, NY 10016, USA.
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39
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Affiliation(s)
- Toshio Odani
- Adeno-Associated Virus Biology Section, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
| | - John A. Chiorini
- Adeno-Associated Virus Biology Section, Molecular Physiology and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
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40
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Dhamanage AS, Thakar MR, Paranjape RS. HIV-1-Mediated Suppression of IFN-α Production Is Associated with Inhibition of IRF-7 Translocation and PI3K/akt Pathway in Plasmacytoid Dendritic Cells. AIDS Res Hum Retroviruses 2019; 35:40-48. [PMID: 30073840 DOI: 10.1089/aid.2018.0136] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Interferon-α (IFN-α) plays a vital role in combating viral infections especially in the early control after infection. However, the HIV infection has shown substantial level of suppression of IFN-α secretion during initial phase of infection. The reasons behind this impairment are still obscure. As plasmacytoid dendritic cells (pDCs) are the major producers of this cytokine, the mechanisms of HIV-1-mediated suppression of IFN-α production by pDCs using the primary pDCs were explored. The nuclear translocation of the interferon regulatory factor (IRF)-7, a transcription factor for IFN-α genes, is essential for the initiation of IFN-α production in pDCs. The HIV-1-exposed pDCs did not show the translocation of IRF-7 into the nucleus in our experiments. Furthermore, it was also observed that HIV-1 inhibited AKT phosphorylation of PI3K/akt pathway in pDCs, an important step for IRF-7 translocation to nucleus. HIV-1-induced inhibition of AKT phosphorylation and IRF-7 translocation was evident even in the presence of Toll-like receptor-7 agonist stimulation and correlated with IFN-α suppression. The findings suggest that HIV-1 may alter AKT phosphorylation to inhibit the translocation of IRF-7 into pDC nucleus, leading to IFN-α suppression, and this may be the reason for IFN-α abrogation observed in recently infected HIV patients. Understanding of interactions between HIV-1 and signaling pathways leading to IFN-α secretion may provide targets for immune intervention.
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Affiliation(s)
| | - Madhuri R. Thakar
- Department of Immunology, National AIDS Research Institute, Pune, India
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41
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Bodewes ILA, Versnel MA. Interferon activation in primary Sjögren's syndrome: recent insights and future perspective as novel treatment target. Expert Rev Clin Immunol 2018; 14:817-829. [PMID: 30173581 DOI: 10.1080/1744666x.2018.1519396] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Primary Sjögren's syndrome (pSS) is one of the most common systemic autoimmune diseases. At the moment, there is no cure for this disease and its etiopathology is complex. Interferons (IFNs) play an important role in the pathogenesis of this disease and are a potential treatment target. Areas covered: Here we discuss the role of IFNs in pSS pathogenesis, complications encountered upon studying IFN-induced gene expression, and comment on the current knowledge on easy clinical applicable 'IFN signatures'. The current treatment options targeting IFNs in pSS are summarized and the perspective of potential new strategies discussed. Expert commentary: The authors provide their perspective on the role of IFNs in pSS and how this knowledge could be used to improve pSS diagnosis, provide new treatment targets, to monitor clinical trials and to stratify pSS patients in order to move toward precision medicine.
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Affiliation(s)
- Iris L A Bodewes
- a Department of Immunology , Erasmus University Medical Centre , Rotterdam , the Netherlands
| | - Marjan A Versnel
- a Department of Immunology , Erasmus University Medical Centre , Rotterdam , the Netherlands
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42
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Wimmers F, Subedi N, van Buuringen N, Heister D, Vivié J, Beeren-Reinieren I, Woestenenk R, Dolstra H, Piruska A, Jacobs JFM, van Oudenaarden A, Figdor CG, Huck WTS, de Vries IJM, Tel J. Single-cell analysis reveals that stochasticity and paracrine signaling control interferon-alpha production by plasmacytoid dendritic cells. Nat Commun 2018; 9:3317. [PMID: 30127440 PMCID: PMC6102223 DOI: 10.1038/s41467-018-05784-3] [Citation(s) in RCA: 93] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Accepted: 07/25/2018] [Indexed: 01/01/2023] Open
Abstract
Type I interferon (IFN) is a key driver of immunity to infections and cancer. Plasmacytoid dendritic cells (pDCs) are uniquely equipped to produce large quantities of type I IFN but the mechanisms that control this process are poorly understood. Here we report on a droplet-based microfluidic platform to investigate type I IFN production in human pDCs at the single-cell level. We show that type I IFN but not TNFα production is limited to a small subpopulation of individually stimulated pDCs and controlled by stochastic gene regulation. Combining single-cell cytokine analysis with single-cell RNA-seq profiling reveals no evidence for a pre-existing subset of type I IFN-producing pDCs. By modulating the droplet microenvironment, we demonstrate that vigorous pDC population responses are driven by a type I IFN amplification loop. Our study highlights the significance of stochastic gene regulation and suggests strategies to dissect the characteristics of immune responses at the single-cell level. Plasmacytoid dendritic cells (pDC) are a pivotal component of the immune system. Here, the authors utilize single-cell microfluidics to interrogate the human pDC compartment and reveal a subset of type I IFN secreting pDCs that is regulated by stochastic gene expression and amplified by microenvironmental cues.
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Affiliation(s)
- Florian Wimmers
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands.,Institute for Immunity, Transplantation and Infection, Stanford University, Stanford, 94305, CA, USA
| | - Nikita Subedi
- Department of Biomedical Engineering, Laboratory of Immunoengineering, Eindhoven University of Technology, Eindhoven, 5612 AZ, The Netherlands.,Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, 5612 AZ, The Netherlands
| | - Nicole van Buuringen
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | - Daan Heister
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | - Judith Vivié
- Hubrecht Institute - KNAW and University Medical Center Utrecht, Utrecht, 3584 CT, The Netherlands
| | - Inge Beeren-Reinieren
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | - Rob Woestenenk
- Department of Laboratory Medicine, Laboratory of Hematology, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | - Harry Dolstra
- Department of Laboratory Medicine, Laboratory of Hematology, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | - Aigars Piruska
- Department of Physical Organic Chemistry, Institute for Molecules and Materials, Radboud University, Nijmegen, 6525 HP, The Netherlands
| | - Joannes F M Jacobs
- Department of Laboratory Medicine, Laboratory Medical Immunology, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | | | - Carl G Figdor
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | - Wilhelm T S Huck
- Department of Physical Organic Chemistry, Institute for Molecules and Materials, Radboud University, Nijmegen, 6525 HP, The Netherlands
| | - I Jolanda M de Vries
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | - Jurjen Tel
- Department of Tumor Immunology, Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands. .,Department of Biomedical Engineering, Laboratory of Immunoengineering, Eindhoven University of Technology, Eindhoven, 5612 AZ, The Netherlands. .,Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, 5612 AZ, The Netherlands.
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43
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Ko YA, Chan YH, Liu CH, Liang JJ, Chuang TH, Hsueh YP, Lin YL, Lin KI. Blimp-1-Mediated Pathway Promotes Type I IFN Production in Plasmacytoid Dendritic Cells by Targeting to Interleukin-1 Receptor-Associated Kinase M. Front Immunol 2018; 9:1828. [PMID: 30131810 PMCID: PMC6091234 DOI: 10.3389/fimmu.2018.01828] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 07/24/2018] [Indexed: 01/13/2023] Open
Abstract
Plasmacytoid dendritic cells (pDCs) are a specialized subset of DCs capable of rapidly producing copious amounts of type I IFN (IFN-I) in response to viral infections. The mechanism regulating rapid production of IFN-I after pDCs are exposed to viral nucleic acids remains elusive. Here, we show that the transcription factor Blimp-1 is promptly induced in pDCs after exposure to TLR7 and TLR9 ligands via a unique Ras-related C3 botulinum toxin substrate (Rac)-mediated pathway. Deletion of the Prdm1 gene encoding Blimp-1 impaired production of IFN-I, but not other cytokines, upon viral infection or treatment with CpG DNA in pDCs. Accordingly, mice lacking Blimp-1 in DCs failed to produce IFN-I after CpG stimulation and did not mount proper antiviral responses following flavivirus infection. The development of pDCs in bone marrow as well as the induction of several activation markers, such as CD86, CD69, and MHCII, by CpG stimulation was generally not affected by the absence of Blimp-1. Mechanistically, we found that Blimp-1 controls the activation of IKKα and IRF7 by directly suppressing interleukin-1 receptor-associated kinase 3 (Irak3), a negative regulator of TLR signaling, in pDCs. Together, we identify a Blimp-1-dependent pathway that rapidly facilitates IFN-I production by relieving interleukin-1 receptor-associated kinase M, encoded by Irak3, in pDCs.
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Affiliation(s)
- Yi-An Ko
- Genomics Research Center, Academia Sinica, Taipei, Taiwan.,Institute of Microbiology and Immunology, National Yang-Ming University, Taipei, Taiwan
| | | | - Chin-Hsiu Liu
- Genomics Research Center, Academia Sinica, Taipei, Taiwan.,Program in Translational Medicine, Kaohsiung Medical University and Academia Sinica, Division of Allergy, Immunology and Rheumatology, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei City, Taiwan
| | - Jian-Jong Liang
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Tsung-Hsien Chuang
- Immunology Research Center, National Health Research Institutes, Miaoli, Taiwan
| | - Yi-Ping Hsueh
- Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan
| | - Yi-Ling Lin
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Kuo-I Lin
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
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44
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Faia K, White K, Murphy E, Proctor J, Pink M, Kosmider N, McGovern K, Kutok J. The phosphoinositide-3 kinase (PI3K)-δ,γ inhibitor, duvelisib shows preclinical synergy with multiple targeted therapies in hematologic malignancies. PLoS One 2018; 13:e0200725. [PMID: 30067771 PMCID: PMC6070190 DOI: 10.1371/journal.pone.0200725] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 07/02/2018] [Indexed: 11/19/2022] Open
Abstract
Duvelisib is an orally active dual inhibitor of PI3K-δ and PI3K-γ in clinical development in hematologic malignancies (HM). To identify novel pairings for duvelisib in HM, it was evaluated alone and in combination with 35 compounds comprising a diverse panel of standard-of-care agents and emerging drugs in development for HM. These compounds were tested in 20 cell lines including diffuse large B-cell, follicular, T-cell, and mantle cell lymphomas, and multiple myeloma. Single agent activity was seen in fourteen cell lines, with a median GI50 of 0.59 μM. A scalar measure of the strength of synergistic drug interactions revealed a synergy hit rate of 19.3% across the matrix of drug combinations and cell lines. Synergy with duvelisib was prominent in lymphoma lines with approved and emerging drugs used to treat HM, including dexamethasone, ibrutinib, and the BCL-2 inhibitor venetoclax. Western blotting revealed that certain duvelisib-treated cell lines showed inhibition of phosphorylated (p) AKT at serine 473 only out to 12 hours, with mTORC2 dependent re-phosphorylation of pAKT evident at 24 hours. Combination with dexamethasone or ibrutinib, however, prevented this reactivation leading to durable inhibition of pAKT. The combination treatments also inhibited downstream signaling effectors pPRAS40 and pS6. The combination of duvelisib with dexamethasone also significantly reduced p-4EBP1, which controls cap dependent translation initiation, leading to decreased levels of c-MYC 6 hours after treatment. In support of the in vitro studies, in vivo xenograft studies revealed that duvelisib in combination with the mTOR inhibitor everolimus led to greater tumor growth inhibition compared to single agent administration. These data provide a rationale for exploring multiple combinations in the clinic and suggest that suppression of mTOR-driven survival signaling may be one important mechanism for combination synergy.
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Affiliation(s)
- Kerrie Faia
- Infinity Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
| | - Kerry White
- Infinity Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
| | - Erin Murphy
- Infinity Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
| | - Jennifer Proctor
- Infinity Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
| | - Melissa Pink
- Infinity Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
| | - Nicole Kosmider
- Infinity Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
| | - Karen McGovern
- Infinity Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
| | - Jeffery Kutok
- Infinity Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
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45
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Mitchell D, Chintala S, Dey M. Plasmacytoid dendritic cell in immunity and cancer. J Neuroimmunol 2018; 322:63-73. [PMID: 30049538 DOI: 10.1016/j.jneuroim.2018.06.012] [Citation(s) in RCA: 99] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 05/29/2018] [Accepted: 06/25/2018] [Indexed: 12/26/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) comprise a subset of dendritic cells characterized by their ability to produce large amount of type I interferon (IFN-I/α). Originally recognized for their role in modulating immune responses to viral stimulation, growing interest has been directed toward their contribution to tumorigenesis. Under normal conditions, Toll-like receptor (TLR)-activated pDCs exhibit robust IFN-α production and promote both innate and adaptive immune responses. In cancer, however, pDCs demonstrate an impaired response to TLR7/9 activation, decreased or absent IFN-α production and contribute to the establishment of an immunosuppressive tumor microenvironment. In addition to IFN-α production, pDCs can also act as antigen presenting cells (APCs) and regulate immune responses to various antigens. The significant role played by pDCs in regulating both the innate and adaptive components of the immune system makes them a critical player in cancer immunology. In this review, we discuss the development and function of pDCs as well as their role in innate and adaptive immunity. Finally, we summarize pDC contribution to cancer pathogenesis, with a special focus on primary malignant brain tumor, their significance in the era of immunotherapy and suggest potential strategies for pDC-targeted therapy.
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Affiliation(s)
- Dana Mitchell
- Department of Neurosurgery, IU Simon Cancer Center, Indiana University, Indiana, USA
| | - Sreenivasulu Chintala
- Department of Neurosurgery, IU Simon Cancer Center, Indiana University, Indiana, USA
| | - Mahua Dey
- Department of Neurosurgery, IU Simon Cancer Center, Indiana University, Indiana, USA.
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46
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Aiello A, Giannessi F, Percario ZA, Affabris E. The involvement of plasmacytoid cells in HIV infection and pathogenesis. Cytokine Growth Factor Rev 2018; 40:77-89. [PMID: 29588163 DOI: 10.1016/j.cytogfr.2018.03.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 03/20/2018] [Accepted: 03/20/2018] [Indexed: 12/15/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) are a unique dendritic cell subset that are specialized in type I interferon (IFN) production. pDCs are key players in the antiviral immune response and serve as bridge between innate and adaptive immunity. Although pDCs do not represent the main reservoir of the Human Immunodeficiency Virus (HIV), they are a crucial subset in HIV infection as they influence viral transmission, target cell infection and antigen presentation. pDCs act as inflammatory and immunosuppressive cells, thus contributing to HIV disease progression. This review provides a state of art analysis of the interactions between HIV and pDCs and their potential roles in HIV transmission, chronic immune activation and immunosuppression. A thorough understanding of the roles of pDCs in HIV infection will help to improve therapeutic strategies to fight HIV infection, and will further increase our knowledge on this important immune cell subset.
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47
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Perego J, Mendes A, Bourbon C, Camosseto V, Combes A, Liu H, Manh TPV, Dalet A, Chasson L, Spinelli L, Bardin N, Chiche L, Santos MAS, Gatti E, Pierre P. Guanabenz inhibits TLR9 signaling through a pathway that is independent of eIF2α dephosphorylation by the GADD34/PP1c complex. Sci Signal 2018; 11:11/514/eaam8104. [PMID: 29363586 DOI: 10.1126/scisignal.aam8104] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Endoplasmic reticulum (ER) stress triggers or amplifies inflammatory signals and cytokine production in immune cells. Upon the resolution of ER stress, the inducible phosphatase 1 cofactor GADD34 promotes the dephosphorylation of the initiation factor eIF2α, thereby enabling protein translation to resume. Several aminoguanidine compounds, such as guanabenz, perturb the eIF2α phosphorylation-dephosphorylation cycle and protect different cell or tissue types from protein misfolding and degeneration. We investigated how pharmacological interference with the eIF2α pathway could be beneficial to treat autoinflammatory diseases dependent on proinflammatory cytokines and type I interferons (IFNs), the production of which is regulated by GADD34 in dendritic cells (DCs). In mouse and human DCs and B cells, guanabenz prevented the activation of Toll-like receptor 9 (TLR9) by CpG oligodeoxynucleotides or DNA-immunoglobulin complexes in endosomes. In vivo, guanabenz protected mice from CpG oligonucleotide-dependent cytokine shock and decreased autoimmune symptom severity in a chemically induced model of systemic lupus erythematosus. However, we found that guanabenz exerted its inhibitory effect independently of GADD34 activity on eIF2α and instead decreased the abundance of CH25H, a cholesterol hydroxylase linked to antiviral immunity. Our results therefore suggest that guanabenz and similar compounds could be used to treat type I IFN-dependent pathologies and that CH25H could be a therapeutic target to control these diseases.
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Affiliation(s)
- Jessica Perego
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France
| | - Andreia Mendes
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France.,International Associated Laboratory (LIA) CNRS "Mistra," 13008 Marseille, France
| | - Clarisse Bourbon
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France
| | - Voahirana Camosseto
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France.,International Associated Laboratory (LIA) CNRS "Mistra," 13008 Marseille, France
| | - Alexis Combes
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France
| | - Hong Liu
- Sanofi, Cambridge, MA 02139, USA
| | - Thien-Phong Vu Manh
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France
| | - Alexandre Dalet
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France
| | - Lionel Chasson
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France
| | - Lionel Spinelli
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France
| | - Nathalie Bardin
- Laboratoire d'Immunologie, Hôpital de la Conception, 13005 Marseille, France.,Aix Marseille Université, INSERM, VRCM, 13005 Marseille, France
| | | | - Manuel A S Santos
- International Associated Laboratory (LIA) CNRS "Mistra," 13008 Marseille, France.,Institute for Research in Biomedicine (iBiMED) and Aveiro Health Sciences Program University of Aveiro, 3810-193 Aveiro, Portugal
| | - Evelina Gatti
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France. .,International Associated Laboratory (LIA) CNRS "Mistra," 13008 Marseille, France.,Institute for Research in Biomedicine (iBiMED) and Aveiro Health Sciences Program University of Aveiro, 3810-193 Aveiro, Portugal
| | - Philippe Pierre
- Aix Marseille Université, CNRS, INSERM, Centre d'Immunologie de Marseille-Luminy (CIML), 13008 Marseille, France. .,International Associated Laboratory (LIA) CNRS "Mistra," 13008 Marseille, France.,Institute for Research in Biomedicine (iBiMED) and Aveiro Health Sciences Program University of Aveiro, 3810-193 Aveiro, Portugal
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48
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Ah Kioon MD, Tripodo C, Fernandez D, Kirou KA, Spiera RF, Crow MK, Gordon JK, Barrat FJ. Plasmacytoid dendritic cells promote systemic sclerosis with a key role for TLR8. Sci Transl Med 2018; 10:10/423/eaam8458. [PMID: 29321259 PMCID: PMC9865429 DOI: 10.1126/scitranslmed.aam8458] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 07/17/2017] [Accepted: 11/14/2017] [Indexed: 01/25/2023]
Abstract
Systemic sclerosis (SSc) is a multisystem life-threatening fibrosing disorder that lacks effective treatment. The link between the inflammation observed in organs such as the skin and profibrotic mechanisms is not well understood. The plasmacytoid dendritic cell (pDC) is a key cell type mediating Toll-like receptor (TLR)-induced inflammation in autoimmune disease patients, including lupus and skin diseases with interface dermatitis. However, the role of pDCs in fibrosis is less clear. We show that pDCs infiltrate the skin of SSc patients and are chronically activated, leading to secretion of interferon-α (IFN-α) and CXCL4, which are both hallmarks of the disease. We demonstrate that the secretion of CXCL4 is under the control of phosphatidylinositol 3-kinase δ and is due to the aberrant presence of TLR8 on pDCs of SSc patients, which is not seen in healthy donors or in lupus pDCs, and that CXCL4 primarily acts by potentiating TLR8- but also TLR9-induced IFN production by pDCs. Depleting pDCs prevented disease in a mouse model of scleroderma and could revert fibrosis in mice with established disease. In contrast, the disease was exacerbated in mice transgenic for TLR8 with recruitment of pDCs to the fibrotic skin, whereas TLR7 only partially contributed to the inflammatory response, indicating that TLR8 is the key RNA-sensing TLR involved in the establishment of fibrosis. We conclude that the pDC is an essential cell type involved in the pathogenesis of SSc and its removal using depleting antibodies or attenuating pDC function could be a novel approach to treat SSc patients.
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Affiliation(s)
- Marie Dominique Ah Kioon
- Autoimmunity and Inflammation Program, HSS Research Institute, Hospital for Special Surgery, New York, NY 10021, USA
| | - Claudio Tripodo
- Tumor Immunology Unit, Department of Health Science, Human Pathology Section, University of Palermo School of Medicine, Palermo, Italy
| | - David Fernandez
- Mary Kirkland Center for Lupus Research, Hospital for Special Surgery, New York, NY 10021, USA
| | - Kyriakos A. Kirou
- Mary Kirkland Center for Lupus Research, Hospital for Special Surgery, New York, NY 10021, USA
| | - Robert F. Spiera
- Scleroderma and Vasculitis Center, Hospital for Special Surgery, New York, NY 10021, USA
| | - Mary K. Crow
- Autoimmunity and Inflammation Program, HSS Research Institute, Hospital for Special Surgery, New York, NY 10021, USA.,Mary Kirkland Center for Lupus Research, Hospital for Special Surgery, New York, NY 10021, USA
| | - Jessica K. Gordon
- Scleroderma and Vasculitis Center, Hospital for Special Surgery, New York, NY 10021, USA
| | - Franck J. Barrat
- Autoimmunity and Inflammation Program, HSS Research Institute, Hospital for Special Surgery, New York, NY 10021, USA.,Corresponding author.
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49
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Δ9-Tetrahydrocannabinol Suppresses Secretion of IFNα by Plasmacytoid Dendritic Cells From Healthy and HIV-Infected Individuals. J Acquir Immune Defic Syndr 2017; 75:588-596. [PMID: 28692581 DOI: 10.1097/qai.0000000000001449] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) play a crucial role in host antiviral immune response through secretion of type I interferon. Interferon alpha (IFNα), a type I IFN, is critical for mounting the initial response to viral pathogens. A consequence of Human Immunodeficiency Virus-1 (HIV) infection is a decrease in both pDC number and function, but prolonged pDC activity has been linked with progression from HIV infection to the development of AIDS. Patients with HIV in the United States routinely use cannabinoid-based therapies to combat the side effects of HIV infection and antiretroviral therapy. However, cannabinoids, including Δ-tetrahydrocannabinol (THC), are well-characterized immunosuppressants. Here, we report that THC suppressed secretion of IFNα by pDC from both healthy and HIV+ donors through a mechanism involving impaired phosphorylation of interferon regulatory factor 7. These results suggest that THC can suppress pDC function during the early host antiviral response by dampening pDC activation.
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Combes A, Camosseto V, N'Guessan P, Argüello RJ, Mussard J, Caux C, Bendriss-Vermare N, Pierre P, Gatti E. BAD-LAMP controls TLR9 trafficking and signalling in human plasmacytoid dendritic cells. Nat Commun 2017; 8:913. [PMID: 29030552 PMCID: PMC5640662 DOI: 10.1038/s41467-017-00695-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 07/20/2017] [Indexed: 12/28/2022] Open
Abstract
Toll-like receptors (TLR) are essential components of the innate immune system. Several accessory proteins, such as UNC93B1, are required for transport and activation of nucleic acid sensing Toll-like receptors in endosomes. Here, we show that BAD-LAMP (LAMP5) controls TLR9 trafficking to LAMP1+ late endosomes in human plasmacytoid dendritic cells (pDC), leading to NF-κB activation and TNF production upon DNA detection. An inducible VAMP3+/LAMP2+/LAMP1- endolysosome compartment exists in pDCs from which TLR9 activation triggers type I interferon expression. BAD-LAMP-silencing enhances TLR9 retention in this compartment and consequent downstream signalling events. Conversely, sustained BAD-LAMP expression in pDCs contributes to their lack of type I interferon production after exposure to a TGF-β-positive microenvironment or isolation from human breast tumours. Hence, BAD-LAMP limits interferon expression in pDCs indirectly, by promoting TLR9 sorting to late endosome compartments at steady state and in response to immunomodulatory cues.TLR9 is highly expressed by plasmacytoid dendritic cells and detects nucleic acids, but to discriminate between host and microbial nucleic acids TLR9 is sorted into different endosomal compartments. Here the authors show that BAD-LAMP limits type 1 interferon responses by sorting TLR9 to late endosomal compartments.
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Affiliation(s)
- Alexis Combes
- Aix Marseille Université, CNRS, INSERM, CIML, 13288, Marseille cedex 9, France
| | - Voahirana Camosseto
- Aix Marseille Université, CNRS, INSERM, CIML, 13288, Marseille cedex 9, France
- International associated laboratory (LIA) CNRS "Mistra", 13288, Marseille cedex 9, France
| | - Prudence N'Guessan
- Aix Marseille Université, CNRS, INSERM, CIML, 13288, Marseille cedex 9, France
| | - Rafael J Argüello
- Aix Marseille Université, CNRS, INSERM, CIML, 13288, Marseille cedex 9, France
| | - Julie Mussard
- Centre Léon Berard, 69373, LYON cedex 08, France
- Université de Lyon, 69373, LYON cedex 08, France
- INSERM U1052, 69373, LYON cedex 08, France
- CNRS UMR5286, 69373, LYON cedex 08, France
| | - Christophe Caux
- Centre Léon Berard, 69373, LYON cedex 08, France
- Université de Lyon, 69373, LYON cedex 08, France
- INSERM U1052, 69373, LYON cedex 08, France
- CNRS UMR5286, 69373, LYON cedex 08, France
| | - Nathalie Bendriss-Vermare
- Centre Léon Berard, 69373, LYON cedex 08, France
- Université de Lyon, 69373, LYON cedex 08, France
- INSERM U1052, 69373, LYON cedex 08, France
- CNRS UMR5286, 69373, LYON cedex 08, France
| | - Philippe Pierre
- Aix Marseille Université, CNRS, INSERM, CIML, 13288, Marseille cedex 9, France
- International associated laboratory (LIA) CNRS "Mistra", 13288, Marseille cedex 9, France
- Institute for Research in Biomedicine-iBiMED and Aveiro Health Sciences Program University of Aveiro, Aveiro, 3810-193, Portugal
| | - Evelina Gatti
- Aix Marseille Université, CNRS, INSERM, CIML, 13288, Marseille cedex 9, France.
- International associated laboratory (LIA) CNRS "Mistra", 13288, Marseille cedex 9, France.
- Institute for Research in Biomedicine-iBiMED and Aveiro Health Sciences Program University of Aveiro, Aveiro, 3810-193, Portugal.
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