1
|
Liu J, Dai C, Yin L, Yang X, Yan J, Liu M, Wu H, Xiao J, Kong W, Xu Z, Feng H. STAT2 negatively regulates RIG-I in the antiviral innate immunity of black carp. FISH & SHELLFISH IMMUNOLOGY 2024; 148:109510. [PMID: 38521143 DOI: 10.1016/j.fsi.2024.109510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Revised: 03/05/2024] [Accepted: 03/15/2024] [Indexed: 03/25/2024]
Abstract
The signal transducer and activator of transcription 2 (STAT2), a downstream factor of type I interferons (IFNs), is a key component of the cellular antiviral immunity response. However, the role of STAT2 in the upstream of IFN signaling, such as the regulation of pattern recognition receptors (PRRs), remains unknown. In this study, STAT2 homologue of black carp (Mylopharyngodon piceus) has been cloned and characterized. The open reading frame (ORF) of bcSTAT2 comprises 2523 nucleotides and encodes 841 amino acids, which presents the conserved structure to that of mammalian STAT2. The dual-luciferase reporter assay and the plaque assay showed that bcSTAT2 possessed certain IFN-inducing ability and antiviral ability against both spring viremia of carp virus (SVCV) and grass carp reovirus (GCRV). Interestingly, we detected the association between bcSTAT2 and bcRIG-I through co-immunoprecipitation (co-IP) assay. Moreover, when bcSTAT2 was co-expressed with bcRIG-I, bcSTAT2 obviously suppressed bcRIG-I-induced IFN expression and antiviral activity. The subsequent co-IP assay and immunoblotting (IB) assay further demonstrated that bcSTAT2 inhibited K63-linked polyubiquitination but not K48-linked polyubiquitination of bcRIG-I, however, did not affect the oligomerization of bcRIG-I. Thus, our data conclude that black carp STAT2 negatively regulates RIG-I through attenuates its K63-linked ubiquitination, which sheds a new light on the regulation of the antiviral innate immunity cascade in vertebrates.
Collapse
Affiliation(s)
- Ji Liu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China; College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Chushan Dai
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Lijun Yin
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Xiao Yang
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Jun Yan
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Meiling Liu
- College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
| | - Hui Wu
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Jun Xiao
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Weiguang Kong
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhen Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Hao Feng
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China.
| |
Collapse
|
2
|
Corneillie L, Lemmens I, Weening K, De Meyer A, Van Houtte F, Tavernier J, Meuleman P. Virus-Host Protein Interaction Network of the Hepatitis E Virus ORF2-4 by Mammalian Two-Hybrid Assays. Viruses 2023; 15:2412. [PMID: 38140653 PMCID: PMC10748205 DOI: 10.3390/v15122412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/01/2023] [Accepted: 12/04/2023] [Indexed: 12/24/2023] Open
Abstract
Throughout their life cycle, viruses interact with cellular host factors, thereby influencing propagation, host range, cell tropism and pathogenesis. The hepatitis E virus (HEV) is an underestimated RNA virus in which knowledge of the virus-host interaction network to date is limited. Here, two related high-throughput mammalian two-hybrid approaches (MAPPIT and KISS) were used to screen for HEV-interacting host proteins. Promising hits were examined on protein function, involved pathway(s), and their relation to other viruses. We identified 37 ORF2 hits, 187 for ORF3 and 91 for ORF4. Several hits had functions in the life cycle of distinct viruses. We focused on SHARPIN and RNF5 as candidate hits for ORF3, as they are involved in the RLR-MAVS pathway and interferon (IFN) induction during viral infections. Knocking out (KO) SHARPIN and RNF5 resulted in a different IFN response upon ORF3 transfection, compared to wild-type cells. Moreover, infection was increased in SHARPIN KO cells and decreased in RNF5 KO cells. In conclusion, MAPPIT and KISS are valuable tools to study virus-host interactions, providing insights into the poorly understood HEV life cycle. We further provide evidence for two identified hits as new host factors in the HEV life cycle.
Collapse
Affiliation(s)
- Laura Corneillie
- Laboratory of Liver Infectious Diseases, Department of Diagnostic Sciences, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| | - Irma Lemmens
- VIB-UGent Center for Medical Biotechnology, Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| | - Karin Weening
- Laboratory of Liver Infectious Diseases, Department of Diagnostic Sciences, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| | - Amse De Meyer
- Laboratory of Liver Infectious Diseases, Department of Diagnostic Sciences, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| | - Freya Van Houtte
- Laboratory of Liver Infectious Diseases, Department of Diagnostic Sciences, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| | - Jan Tavernier
- VIB-UGent Center for Medical Biotechnology, Department of Biomolecular Medicine, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| | - Philip Meuleman
- Laboratory of Liver Infectious Diseases, Department of Diagnostic Sciences, Faculty of Medicine and Health Sciences, Ghent University, 9000 Ghent, Belgium
| |
Collapse
|
3
|
Chang H, Hou P, Wang X, Xiang A, Wu H, Qi W, Yang R, Wang X, Li X, He W, Zhao G, Sun W, Wang T, He DC, Wang H, Gao Y, He H. CD97 negatively regulates the innate immune response against RNA viruses by promoting RNF125-mediated RIG-I degradation. Cell Mol Immunol 2023; 20:1457-1471. [PMID: 37978243 PMCID: PMC10687259 DOI: 10.1038/s41423-023-01103-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/28/2023] [Indexed: 11/19/2023] Open
Abstract
The G protein-coupled receptor ADGRE5 (CD97) binds to various metabolites that play crucial regulatory roles in metabolism. However, its function in the antiviral innate immune response remains to be determined. In this study, we report that CD97 inhibits virus-induced type-I interferon (IFN-I) release and enhances RNA virus replication in cells and mice. CD97 was identified as a new negative regulator of the innate immune receptor RIG-I, and RIG-1 degradation led to the suppression of the IFN-I signaling pathway. Furthermore, overexpression of CD97 promoted the ubiquitination of RIG-I, resulting in its degradation, but did not impact its mRNA expression. Mechanistically, CD97 upregulates RNF125 expression to induce RNF125-mediated RIG-I degradation via K48-linked ubiquitination at Lys181 after RNA virus infection. Most importantly, CD97-deficient mice are more resistant than wild-type mice to RNA virus infection. We also found that sanguinarine-mediated inhibition of CD97 effectively blocks VSV and SARS-CoV-2 replication. These findings elucidate a previously unknown mechanism through which CD97 negatively regulates RIG-I in the antiviral innate immune response and provide a molecular basis for the development of new therapeutic strategies and the design of targeted antiviral agents.
Collapse
Affiliation(s)
- Huasong Chang
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
| | - Peili Hou
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China
| | - Xuefeng Wang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, 130122, China
| | - Aibiao Xiang
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
| | - Hao Wu
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
| | - Wenjing Qi
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
| | - Rukun Yang
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
| | - Xue Wang
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
| | - Xingyu Li
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
| | - Wenqi He
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, Jilin, 130062, China
| | - Guimin Zhao
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China
| | - Weiyang Sun
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, 130122, China
| | - Tiecheng Wang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, 130122, China
| | - Daniel Chang He
- The College of Arts and Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Hongmei Wang
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China.
| | - Yuwei Gao
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, Jilin, 130122, China.
| | - Hongbin He
- Ruminant Diseases Research Center, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250014, China.
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, Shandong, 271018, China.
| |
Collapse
|
4
|
Ren J, Yu P, Liu S, Li R, Niu X, Chen Y, Zhang Z, Zhou F, Zhang L. Deubiquitylating Enzymes in Cancer and Immunity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2303807. [PMID: 37888853 PMCID: PMC10754134 DOI: 10.1002/advs.202303807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 08/30/2023] [Indexed: 10/28/2023]
Abstract
Deubiquitylating enzymes (DUBs) maintain relative homeostasis of the cellular ubiquitome by removing the post-translational modification ubiquitin moiety from substrates. Numerous DUBs have been demonstrated specificity for cleaving a certain type of ubiquitin linkage or positions within ubiquitin chains. Moreover, several DUBs perform functions through specific protein-protein interactions in a catalytically independent manner, which further expands the versatility and complexity of DUBs' functions. Dysregulation of DUBs disrupts the dynamic equilibrium of ubiquitome and causes various diseases, especially cancer and immune disorders. This review summarizes the Janus-faced roles of DUBs in cancer including proteasomal degradation, DNA repair, apoptosis, and tumor metastasis, as well as in immunity involving innate immune receptor signaling and inflammatory and autoimmune disorders. The prospects and challenges for the clinical development of DUB inhibitors are further discussed. The review provides a comprehensive understanding of the multi-faced roles of DUBs in cancer and immunity.
Collapse
Affiliation(s)
- Jiang Ren
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033P. R. China
| | - Peng Yu
- Zhongshan Institute for Drug DiscoveryShanghai Institute of Materia MedicaChinese Academy of SciencesZhongshanGuangdongP. R. China
| | - Sijia Liu
- International Biomed‐X Research CenterSecond Affiliated Hospital of Zhejiang University School of MedicineZhejiang UniversityHangzhouP. R. China
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang ProvinceHangzhou310058China
| | - Ran Li
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033P. R. China
| | - Xin Niu
- MOE Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058P. R. China
| | - Yan Chen
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033P. R. China
| | - Zhenyu Zhang
- Department of NeurosurgeryThe First Affiliated Hospital of Zhengzhou UniversityZhengzhouHenan450003P. R. China
| | - Fangfang Zhou
- Institutes of Biology and Medical ScienceSoochow UniversitySuzhou215123P. R. China
| | - Long Zhang
- The Eighth Affiliated HospitalSun Yat‐sen UniversityShenzhen518033P. R. China
- International Biomed‐X Research CenterSecond Affiliated Hospital of Zhejiang University School of MedicineZhejiang UniversityHangzhouP. R. China
- MOE Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058P. R. China
- Cancer CenterZhejiang UniversityHangzhouZhejiang310058P. R. China
| |
Collapse
|
5
|
Zhang MQ, Jia X, Cheng CQ, Wang YX, Li YY, Kong LD, Li QQ, Xie F, Yu YL, He YT, Dong QT, Jia ZH, Wang Y, Xu AL. Capsaicin functions as a selective degrader of STAT3 to enhance host resistance to viral infection. Acta Pharmacol Sin 2023; 44:2253-2264. [PMID: 37311796 PMCID: PMC10618195 DOI: 10.1038/s41401-023-01111-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/13/2023] [Indexed: 06/15/2023] Open
Abstract
Although STAT3 has been reported as a negative regulator of type I interferon (IFN) signaling, the effects of pharmacologically inhibiting STAT3 on innate antiviral immunity are not well known. Capsaicin, approved for the treatment of postherpetic neuralgia and diabetic peripheral nerve pain, is an agonist of transient receptor potential vanilloid subtype 1 (TRPV1), with additional recognized potencies in anticancer, anti-inflammatory, and metabolic diseases. We investigated the effects of capsaicin on viral replication and innate antiviral immune response and discovered that capsaicin dose-dependently inhibited the replication of VSV, EMCV, and H1N1. In VSV-infected mice, pretreatment with capsaicin improved the survival rate and suppressed inflammatory responses accompanied by attenuated VSV replication in the liver, lung, and spleen. The inhibition of viral replication by capsaicin was independent of TRPV1 and occurred mainly at postviral entry steps. We further revealed that capsaicin directly bound to STAT3 protein and selectively promoted its lysosomal degradation. As a result, the negative regulation of STAT3 on the type I IFN response was attenuated, and host resistance to viral infection was enhanced. Our results suggest that capsaicin is a promising small-molecule drug candidate, and offer a feasible pharmacological strategy for strengthening host resistance to viral infection.
Collapse
Affiliation(s)
- Mei-Qi Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Xin Jia
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Cui-Qin Cheng
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yu-Xi Wang
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yi-Ying Li
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Ling-Dong Kong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Qi-Qi Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Fang Xie
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yan-Li Yu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yu-Ting He
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Qiu-Tong Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Zhan-Hong Jia
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 100029, China
| | - Yao Wang
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
- National Key Laboratory of Efficacy and Mechanism on Chinese Medicine for Metabolic Diseases, Beijing University of Chinese Medicine, Beijing, 100029, China.
| | - An-Long Xu
- School of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China.
- National Key Laboratory of Efficacy and Mechanism on Chinese Medicine for Metabolic Diseases, Beijing University of Chinese Medicine, Beijing, 100029, China.
| |
Collapse
|
6
|
Liu Y, Zhou H, Tang X. STUB1/CHIP: New insights in cancer and immunity. Biomed Pharmacother 2023; 165:115190. [PMID: 37506582 DOI: 10.1016/j.biopha.2023.115190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 07/12/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
The STUB1 gene (STIP1 homology and U-box-containing protein 1), located at 16q13.3, encodes the CHIP (carboxyl terminus of Hsc70-interacting protein), an essential E3 ligase involved in protein quality control. CHIP comprises three domains: an N-terminal tetratricopeptide repeat (TPR) domain, a middle coiled-coil domain, and a C-terminal U-box domain. It functions as a co-chaperone for heat shock protein (HSP) via the TPR domain and as an E3 ligase, ubiquitinating substrates through its U-box domain. Numerous studies suggest that STUB1 plays a crucial role in various physiological process, such as aging, autophagy, and bone remodeling. Moreover, emerging evidence has shown that STUB1 can degrade oncoproteins to exert tumor-suppressive functions, and it has recently emerged as a novel player in tumor immunity. This review provides a comprehensive overview of STUB1's role in cancer, including its clinical significance, impact on tumor progression, dual roles, tumor stem cell-like properties, angiogenesis, drug resistance, and DNA repair. In addition, we explore STUB1's functions in immune cell differentiation and maturation, inflammation, autoimmunity, antiviral immune response, and tumor immunity. Collectively, STUB1 represents a promising and valuable therapeutic target in cancer and immunology.
Collapse
Affiliation(s)
- Yongshuo Liu
- Biomedical Pioneering Innovation Center (BIOPIC), Beijing Advanced Innovation Center for Genomics, Peking-Tsinghua Center for Life Sciences, Peking University Genome Editing Research Center, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China.
| | - Honghong Zhou
- Key Laboratory of RNA Biology, Center for Big Data Research in Health, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Xiaolong Tang
- Biomedical Pioneering Innovation Center (BIOPIC), Beijing Advanced Innovation Center for Genomics, Peking-Tsinghua Center for Life Sciences, Peking University Genome Editing Research Center, State Key Laboratory of Protein and Plant Gene Research, School of Life Sciences, Peking University, Beijing 100871, China.
| |
Collapse
|
7
|
Kong X, Lu X, Wang S, Hao J, Guo D, Wu H, Jiang Y, Sun Y, Wang J, Zhang G, Cai Z. Type I interferon/STAT1 signaling regulates UBE2M-mediated antiviral innate immunity in a negative feedback manner. Cell Rep 2023; 42:112002. [PMID: 36662617 DOI: 10.1016/j.celrep.2023.112002] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 11/20/2022] [Accepted: 01/04/2023] [Indexed: 01/20/2023] Open
Abstract
Type I interferon (IFN-I) signaling is central to inducing antiviral innate immunity. However, the mechanisms for IFN-I signaling self-regulation are still largely unknown. Here, we report that RNA virus-infected macrophages with UBE2M deficiency produced decreased IFN-I expression in a RIG-I-dependent manner, causing an aggravated viral infection. Mechanistically, UBE2M inhibits RIG-I degradation by preventing the interaction of RIG-I and E3 ligase STUB1, resulting in antiviral IFN-I signaling activation. Simultaneously, IFN-I signaling-activated STAT1 facilitates the transcription of Trim21, leading to increased UBE2M degradation and blunted antiviral immunity. Translationally, oral administration of milk-derived extracellular vesicles containing RING domain-truncated TRIM21 (TRIM21-ΔRING) lacking E3 ligase activity efficiently transfers TRIM21-ΔRING into macrophages. TRIM21-ΔRING suppresses UBE2M degradation by competitively binding to UBE2M with TRIM21, thereby enhancing antiviral immunity. Overall, we reveal a negative feedback loop of IFN-I signaling and develop a reagent to improve innate immunity against RNA viruses.
Collapse
Affiliation(s)
- Xianghui Kong
- Institute of Immunology, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China; Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou 310006, China
| | - Xinliang Lu
- Institute of Immunology, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China; Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou 310006, China.
| | - Shibo Wang
- Institute of Immunology, and Department of Orthopedics of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Jiayue Hao
- Institute of Immunology, and Department of Orthopedics of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Danfeng Guo
- Henan Key Laboratory for Digestive Organ Transplantation, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Hao Wu
- Gastroenterology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Yu Jiang
- Department of Clinical Laboratory Medicine, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310009, China
| | - Yi Sun
- Cancer Institute of the Second Affiliated Hospital, and Institute of Translational Medicine, Zhejiang University School of Medicine, Hangzhou 310029, China
| | - Jianli Wang
- Institute of Immunology, and Bone Marrow Transplantation Center of the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China; Institute of Hematology, Zhejiang University & Zhejiang Engineering Laboratory for Stem Cell and Immunotherapy, Hangzhou 310006, China.
| | - Gensheng Zhang
- Department of Critical Care Medicine of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| | - Zhijian Cai
- Institute of Immunology, and Department of Orthopedics of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310009, China.
| |
Collapse
|
8
|
Shi Q, Li G, Dou S, Tang L, Hou C, Wang Z, Gao Y, Gao Z, Hao Y, Mo R, Shen B, Wang R, Li Y, Han G. Negative Regulation of RIG-I by Tim-3 Promotes H1N1 Infection. Immunol Invest 2023; 52:1-19. [PMID: 35997714 DOI: 10.1080/08820139.2022.2113407] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The mechanisms by which retinoic acid-inducible gene I (RIG-I), a critical RNA virus sensor, is regulated in many biological and pathological processes remain to be determined. Here, we demonstrate that T cell immunoglobulin and mucin protein-3 (Tim-3), an immune checkpoint inhibitor, mediates infection tolerance by suppressing RIG-I-type I interferon pathway. Overexpression or blockade of Tim-3 affects type I interferon expression, virus replication, and tissue damage in mice following H1N1 infection. Tim-3 signaling decreases RIG-I transcription via STAT1 in macrophages and promotes the proteasomal dependent degradation of RIG-I by enhancing K-48-linked ubiquitination via the E3 ligase RNF-122. Silencing RIG-I reversed Tim-3 blockage-mediated upregulation of type I interferon in macrophages. We thus identified a new mechanism through which Tim-3 mediates the immune evasion of H1N1, which may have clinical implications for the treatment of viral diseases.
Collapse
Affiliation(s)
- Qingzhu Shi
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Ge Li
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Shuaijie Dou
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Lili Tang
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Chunmei Hou
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Zhiding Wang
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Yang Gao
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Zhenfang Gao
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Ying Hao
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Rongliang Mo
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Beifen Shen
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Renxi Wang
- Beijing Institute of Brain Disorders, Laboratory of Brain Disorders, Ministry of Science and Technology, Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China
| | - Yuxiang Li
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| | - Gencheng Han
- Department of Neuroimmune and Antibody Engineering, Beijing Institute of Basic Medical Sciences, Beijing, China
| |
Collapse
|
9
|
Weerawardhana A, Uddin MB, Choi JH, Pathinayake P, Shin SH, Chathuranga K, Park JH, Lee JS. Foot-and-mouth disease virus non-structural protein 2B downregulates the RLR signaling pathway via degradation of RIG-I and MDA5. Front Immunol 2022; 13:1020262. [PMID: 36248821 PMCID: PMC9556895 DOI: 10.3389/fimmu.2022.1020262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/13/2022] [Indexed: 11/17/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) is a single-stranded, positive-sense RNA virus containing at least 13 proteins. Many of these proteins show immune modulation capabilities. As a non-structural protein of the FMDV, 2B is involved in the rearrangement of the host cell membranes and the disruption of the host secretory pathway as a viroporin. Previous studies have also shown that FMDV 2B plays a role in the modulation of host type-I interferon (IFN) responses through the inhibition of expression of RIG-I and MDA5, key cytosolic sensors of the type-I IFN signaling. However, the exact molecular mechanism is poorly understood. Here, we demonstrated that FMDV 2B modulates host IFN signal pathway by the degradation of RIG-I and MDA5. FMDV 2B targeted the RIG-I for ubiquitination and proteasomal degradation by recruiting E3 ubiquitin ligase ring finger protein 125 (RNF125) and also targeted MDA5 for apoptosis-induced caspase-3- and caspase-8-dependent degradation. Ultimately, FMDV 2B significantly inhibited RNA virus-induced IFN-β production. Importantly, we identified that the C-terminal amino acids 126-154 of FMDV 2B are essential for 2B-mediated degradation of the RIG-I and MDA5. Collectively, these results provide a clearer understanding of the specific molecular mechanisms used by FMDV 2B to inhibit the IFN responses and a rational approach to virus attenuation for future vaccine development.
Collapse
Affiliation(s)
- Asela Weerawardhana
- College of Veterinary Medicine, Chungnam National University, Daejeon, South Korea
| | - Md Bashir Uddin
- College of Veterinary Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medicine, Sylhet Agricultural University, Sylhet, Bangladesh
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, United States
| | - Joo-Hyung Choi
- Foot and Mouth Disease Division, Animal Quarantine and Inspection Agency, Anyang, South Korea
- Wildlife Disease Response Team, National Institute of Wildlife Disease Control and Prevention (NIWDC), Gwangju, South Korea
| | - Prabuddha Pathinayake
- College of Veterinary Medicine, Chungnam National University, Daejeon, South Korea
- Immune Health Program, Hunter Medical Research Institute, University of Newcastle, Newcastle, NSW, Australia
| | - Sung Ho Shin
- Foot and Mouth Disease Division, Animal Quarantine and Inspection Agency, Anyang, South Korea
| | - Kiramage Chathuranga
- College of Veterinary Medicine, Chungnam National University, Daejeon, South Korea
| | - Jong-Hyeon Park
- Foot and Mouth Disease Division, Animal Quarantine and Inspection Agency, Anyang, South Korea
- *Correspondence: Jong-Hyeon Park, ; Jong-Soo Lee,
| | - Jong-Soo Lee
- College of Veterinary Medicine, Chungnam National University, Daejeon, South Korea
- *Correspondence: Jong-Hyeon Park, ; Jong-Soo Lee,
| |
Collapse
|
10
|
Song J, Li M, Li C, Liu K, Zhu Y, Zhang H. Friend or foe: RIG- I like receptors and diseases. Autoimmun Rev 2022; 21:103161. [PMID: 35926770 PMCID: PMC9343065 DOI: 10.1016/j.autrev.2022.103161] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 07/29/2022] [Indexed: 12/22/2022]
Abstract
Retinoic acid-inducible gene I (RIG-I)-like receptors (RLRs), which are pivotal sensors of RNA virus invasions, mediate the transcriptional induction of genes encoding type I interferons (IFNs) and proinflammatory cytokines, successfully establishing host antiviral immune response. A few excellent reviews have elaborated on the structural biology of RLRs and the antiviral mechanisms of RLR activation. In this review, we give a basic understanding of RLR biology and summarize recent findings of how RLR signaling cascade is strictly controlled by host regulatory mechanisms, which include RLR-interacting proteins, post-translational modifications and microRNAs (miRNAs). Furthermore, we pay particular attention to the relationship between RLRs and diseases, especially how RLRs participate in SARS-CoV-2, malaria or bacterial infections, how single-nucleotide polymorphisms (SNPs) or mutations in RLRs and antibodies against RLRs lead to autoinflammatory diseases and autoimmune diseases, and how RLRs are involved in anti-tumor immunity. These findings will provide insights and guidance for antiviral and immunomodulatory therapies targeting RLRs.
Collapse
Affiliation(s)
- Jie Song
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha City, Hunan Province, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha City, Hunan Province, China; Sepsis Translational Medicine Key Lab of Hunan Province, Central South University, Changsha City, Hunan Province, China
| | - Muyuan Li
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha City, Hunan Province, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha City, Hunan Province, China; Sepsis Translational Medicine Key Lab of Hunan Province, Central South University, Changsha City, Hunan Province, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha City, Hunan Province, China
| | - Caiyan Li
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha City, Hunan Province, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha City, Hunan Province, China; Sepsis Translational Medicine Key Lab of Hunan Province, Central South University, Changsha City, Hunan Province, China
| | - Ke Liu
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha City, Hunan Province, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha City, Hunan Province, China; Sepsis Translational Medicine Key Lab of Hunan Province, Central South University, Changsha City, Hunan Province, China
| | - Yaxi Zhu
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha City, Hunan Province, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha City, Hunan Province, China; Sepsis Translational Medicine Key Lab of Hunan Province, Central South University, Changsha City, Hunan Province, China.
| | - Huali Zhang
- Department of Rheumatology, Xiangya Hospital, Central South University, Changsha City, Hunan Province, China; Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha City, Hunan Province, China; Sepsis Translational Medicine Key Lab of Hunan Province, Central South University, Changsha City, Hunan Province, China.
| |
Collapse
|
11
|
Luo J, Zhang L, Shen F, Luo L, Chen L, Fan Z, Hou R, Yue B, Zhang X. Blood transcriptome analysis revealing aging gene expression profiles in red panda. PeerJ 2022; 10:e13743. [PMID: 35898935 PMCID: PMC9310792 DOI: 10.7717/peerj.13743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 06/27/2022] [Indexed: 01/17/2023] Open
Abstract
The red panda is an endangered forest species distributed on the edge of the Qinghai Tibet Plateau. The species has been conserved in ex-situ in many countries and its survival is threatened by many diseases. Its immune system is vulnerable to age-associated alterations, which accumulate and result in a progressive deterioration that leads to an increased incidence of diseases. We identified 2,219 differentially expressed genes (DEGs) between geriatric (11-16 years) and adult individuals (4-8 years), and 1690 DEGs between adults and juveniles (1 year). The gene expression and functional annotation results showed that the innate immunity of red pandas increases significantly in geriatric individuals, whereas its change remains unclear when comparing adults and juveniles. We found that the adaptive immunity of red pandas first increased and then decreased with age. We identified CXCR3, BLNK, and CCR4 as the hub genes in the age-related protein-protein interaction network, which showed their central role in age-related immune changes. Many DNA repair genes were down-regulated in geriatric red pandas, suggesting that the DNA repair ability of the blood tissue in geriatric red pandas is significantly reduced. The significantly up-regulated TLR5 in geriatric individuals also suggests the possibility of enhancing the vaccination immune response by incorporating flagellin, which could be used to address decreased vaccine responses caused by age-related declines in immune system function. This work provides an insight into gene expression changes associated with aging and paves the way for effective disease prevention and treatment strategies for red pandas in the future.
Collapse
Affiliation(s)
- Jing Luo
- Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, College of Life Science, Sichuan University, Chengdu, China
| | - Liang Zhang
- Sichuan Key Laboratory for Conservation Biology of Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Sichuan, China
| | - Fujun Shen
- Sichuan Key Laboratory for Conservation Biology of Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Sichuan, China
| | - Li Luo
- Sichuan Key Laboratory for Conservation Biology of Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Sichuan, China
| | - Lei Chen
- Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, College of Life Science, Sichuan University, Chengdu, China
| | - Zhenxin Fan
- Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, College of Life Science, Sichuan University, Chengdu, China
| | - Rong Hou
- Sichuan Key Laboratory for Conservation Biology of Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Sichuan, China
| | - Bisong Yue
- Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, College of Life Science, Sichuan University, Chengdu, China
| | - Xiuyue Zhang
- Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, College of Life Science, Sichuan University, Chengdu, China
| |
Collapse
|
12
|
Cai X, Zhou Z, Zhu J, Liu X, Ouyang G, Wang J, Li Z, Li X, Zha H, Zhu C, Rong F, Tang J, Liao Q, Chen X, Xiao W. Opposing effects of deubiquitinase OTUD3 in innate immunity against RNA and DNA viruses. Cell Rep 2022; 39:110920. [PMID: 35675783 DOI: 10.1016/j.celrep.2022.110920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 03/29/2022] [Accepted: 05/13/2022] [Indexed: 11/16/2022] Open
Abstract
Retinoic acid-inducible-I (RIG-I), melanoma differentiation-associated gene 5 (MDA5), and cyclic GMP-AMP synthase (cGAS) genes encode essential cytosolic receptors mediating antiviral immunity against viruses. Here, we show that OTUD3 has opposing role in response to RNA and DNA virus infection by removing distinct types of RIG-I/MDA5 and cGAS polyubiquitination. OTUD3 binds to RIG-I and MDA5 and removes K63-linked ubiquitination. This serves to reduce the binding of RIG-I and MDA5 to viral RNA and the downstream adaptor MAVS, leading to the suppression of the RNA virus-triggered innate antiviral responses. Meanwhile, OTUD3 associates with cGAS and targets at Lys279 to deubiquitinate K48-linked ubiquitination, resulting in the enhancement of cGAS protein stability and DNA-binding ability. As a result, Otud3-deficient mice and zebrafish are more resistant to RNA virus infection but are more susceptible to DNA virus infection. These findings demonstrate that OTUD3 limits RNA virus-triggered innate immunity but promotes DNA virus-triggered innate immunity.
Collapse
Affiliation(s)
- Xiaolian Cai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - Ziwen Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Junji Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - Gang Ouyang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - Jing Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - Zhi Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xiong Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Huangyuan Zha
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China
| | - Chunchun Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fangjing Rong
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jinghua Tang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Qian Liao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Xiaoyun Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China; University of Chinese Academy of Sciences, Beijing 100049, P. R. China; The Innovation of Seed Design, Chinese Academy of Sciences, Wuhan 430072, P. R. China; Hubei Hongshan Laboratory, Wuhan 430070, P. R. China.
| |
Collapse
|
13
|
The Central Role of the Ubiquitin-Proteasome System in EBV-Mediated Oncogenesis. Cancers (Basel) 2022; 14:cancers14030611. [PMID: 35158879 PMCID: PMC8833352 DOI: 10.3390/cancers14030611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 12/30/2022] Open
Abstract
Simple Summary Epstein–Barr virus (EBV) is the first discovered human tumor virus, which contributes to the oncogenesis of many human cancers. The ubiquitin–proteasome system is a key player during EBV-mediated oncogenesis and has been developed as a crucial therapeutic target for treatment. In this review, we briefly describe how EBV antigens can modulate the ubiquitin–proteasome system for targeted protein degradation and how they are regulated in the EBV life cycle to mediate oncogenesis. Additionally, the developed proteasome inhibitors are discussed for the treatment of EBV-associated cancers. Abstract Deregulation of the ubiquitin–proteasome system (UPS) plays a critical role in the development of numerous human cancers. Epstein–Barr virus (EBV), the first known human tumor virus, has evolved distinct molecular mechanisms to manipulate the ubiquitin–proteasome system, facilitate its successful infection, and drive opportunistic cancers. The interactions of EBV antigens with the ubiquitin–proteasome system can lead to oncogenesis through the targeting of cellular factors involved in proliferation. Recent studies highlight the central role of the ubiquitin–proteasome system in EBV infection. This review will summarize the versatile strategies in EBV-mediated oncogenesis that contribute to the development of specific therapeutic approaches to treat EBV-associated malignancies.
Collapse
|
14
|
Ebstein F, Küry S, Papendorf JJ, Krüger E. Neurodevelopmental Disorders (NDD) Caused by Genomic Alterations of the Ubiquitin-Proteasome System (UPS): the Possible Contribution of Immune Dysregulation to Disease Pathogenesis. Front Mol Neurosci 2021; 14:733012. [PMID: 34566579 PMCID: PMC8455891 DOI: 10.3389/fnmol.2021.733012] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/10/2021] [Indexed: 12/15/2022] Open
Abstract
Over thirty years have passed since the first description of ubiquitin-positive structures in the brain of patients suffering from Alzheimer’s disease. Meanwhile, the intracellular accumulation of ubiquitin-modified insoluble protein aggregates has become an indisputable hallmark of neurodegeneration. However, the role of ubiquitin and a fortiori the ubiquitin-proteasome system (UPS) in the pathogenesis of neurodevelopmental disorders (NDD) is much less described. In this article, we review all reported monogenic forms of NDD caused by lesions in genes coding for any component of the UPS including ubiquitin-activating (E1), -conjugating (E2) enzymes, ubiquitin ligases (E3), ubiquitin hydrolases, and ubiquitin-like modifiers as well as proteasome subunits. Strikingly, our analysis revealed that a vast majority of these proteins have a described function in the negative regulation of the innate immune response. In this work, we hypothesize a possible involvement of autoinflammation in NDD pathogenesis. Herein, we discuss the parallels between immune dysregulation and neurodevelopment with the aim at improving our understanding the biology of NDD and providing knowledge required for the design of novel therapeutic strategies.
Collapse
Affiliation(s)
- Frédéric Ebstein
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald, Germany
| | - Sébastien Küry
- CHU Nantes, Service de Génétique Médicale, Nantes, France.,l'Institut du Thorax, CNRS, INSERM, CHU Nantes, Université de Nantes, Nantes, France
| | - Jonas Johannes Papendorf
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald, Germany
| | - Elke Krüger
- Institute of Medical Biochemistry and Molecular Biology, University Medicine Greifswald, Greifswald, Germany
| |
Collapse
|
15
|
Kumar S, Basu M, Ghosh MK. Chaperone-assisted E3 ligase CHIP: A double agent in cancer. Genes Dis 2021; 9:1521-1555. [PMID: 36157498 PMCID: PMC9485218 DOI: 10.1016/j.gendis.2021.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 08/06/2021] [Indexed: 12/11/2022] Open
Abstract
The carboxy-terminus of Hsp70-interacting protein (CHIP) is a ubiquitin ligase and co-chaperone belonging to Ubox family that plays a crucial role in the maintenance of cellular homeostasis by switching the equilibrium of the folding-refolding mechanism towards the proteasomal or lysosomal degradation pathway. It links molecular chaperones viz. HSC70, HSP70 and HSP90 with ubiquitin proteasome system (UPS), acting as a quality control system. CHIP contains charged domain in between N-terminal tetratricopeptide repeat (TPR) and C-terminal Ubox domain. TPR domain interacts with the aberrant client proteins via chaperones while Ubox domain facilitates the ubiquitin transfer to the client proteins for ubiquitination. Thus, CHIP is a classic molecule that executes ubiquitination for degradation of client proteins. Further, CHIP has been found to be indulged in cellular differentiation, proliferation, metastasis and tumorigenesis. Additionally, CHIP can play its dual role as a tumor suppressor as well as an oncogene in numerous malignancies, thus acting as a double agent. Here, in this review, we have reported almost all substrates of CHIP established till date and classified them according to the hallmarks of cancer. In addition, we discussed about its architectural alignment, tissue specific expression, sub-cellular localization, folding-refolding mechanisms of client proteins, E4 ligase activity, normal physiological roles, as well as involvement in various diseases and tumor biology. Further, we aim to discuss its importance in HSP90 inhibitors mediated cancer therapy. Thus, this report concludes that CHIP may be a promising and worthy drug target towards pharmaceutical industry for drug development.
Collapse
|
16
|
Yang Z, Wang J, He B, Zhang X, Li X, Kuang E. RTN3 inhibits RIG-I-mediated antiviral responses by impairing TRIM25-mediated K63-linked polyubiquitination. eLife 2021; 10:e68958. [PMID: 34313226 PMCID: PMC8315805 DOI: 10.7554/elife.68958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 07/12/2021] [Indexed: 11/26/2022] Open
Abstract
Upon viral RNA recognition, the RIG-I signalosome continuously generates IFNs and cytokines, leading to neutrophil recruitment and inflammation. Thus, attenuation of excessive immune and inflammatory responses is crucial to restore immune homeostasis and prevent unwarranted damage, yet few resolving mediators have been identified. In the present study, we demonstrated that RTN3 is strongly upregulated during RNA viral infection and acts as an inflammation-resolving regulator. Increased RTN3 aggregates on the endoplasmic reticulum and interacts with both TRIM25 and RIG-I, subsequently impairing K63-linked polyubiquitination and resulting in both IRF3 and NF-κB inhibition. Rtn3 overexpression in mice causes an obvious inflammation resolving phenomenon when challenged with VSV, Rtn3-overexpressing mice display significantly decreased neutrophil numbers and inflammatory cell infiltration, which is accompanied by reduced tissue edema in the liver and thinner alveolar interstitium. Taken together, our findings identify RTN3 as a conserved negative regulator of immune and inflammatory responses and provide insights into the negative feedback that maintains immune and inflammatory homeostasis.
Collapse
Affiliation(s)
- Ziwei Yang
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen UniversityGuangzhouChina
- Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of EducationGuangzhouChina
| | - Jun Wang
- Zhongshan School of Medicine, Sun Yat-Sen UniversityGuangzhouChina
| | - Bailin He
- Zhongshan School of Medicine, Sun Yat-Sen UniversityGuangzhouChina
| | - Xiaolin Zhang
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen UniversityGuangzhouChina
| | - Xiaojuan Li
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen UniversityGuangzhouChina
- Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of EducationGuangzhouChina
| | - Ersheng Kuang
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat-Sen UniversityGuangzhouChina
- Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of EducationGuangzhouChina
| |
Collapse
|
17
|
Zhang Y, Xia G, Zhu Q. Conserved and Unique Roles of Chaperone-Dependent E3 Ubiquitin Ligase CHIP in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:699756. [PMID: 34305988 PMCID: PMC8299108 DOI: 10.3389/fpls.2021.699756] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/17/2021] [Indexed: 05/09/2023]
Abstract
Protein quality control (PQC) is essential for maintaining cellular homeostasis by reducing protein misfolding and aggregation. Major PQC mechanisms include protein refolding assisted by molecular chaperones and the degradation of misfolded and aggregated proteins using the proteasome and autophagy. A C-terminus of heat shock protein (Hsp) 70-interacting protein [carboxy-terminal Hsp70-interacting protein (CHIP)] is a chaperone-dependent and U-box-containing E3 ligase. CHIP is a key molecule in PQC by recognizing misfolded proteins through its interacting chaperones and targeting their degradation. CHIP also ubiquitinates native proteins and plays a regulatory role in other cellular processes, including signaling, development, DNA repair, immunity, and aging in metazoans. As a highly conserved ubiquitin ligase, plant CHIP plays an important role in response to a broad spectrum of biotic and abiotic stresses. CHIP protects chloroplasts by coordinating chloroplast PQC both outside and inside the important photosynthetic organelle of plant cells. CHIP also modulates the activity of protein phosphatase 2A (PP2A), a crucial component in a network of plant signaling, including abscisic acid (ABA) signaling. In this review, we discuss the structure, cofactors, activities, and biological function of CHIP with an emphasis on both its conserved and unique roles in PQC, stress responses, and signaling in plants.
Collapse
Affiliation(s)
| | | | - Qianggen Zhu
- Department of Landscape and Horticulture, Ecology College, Lishui University, Lishui, China
| |
Collapse
|
18
|
Shen Y, Tang K, Chen D, Hong M, Sun F, Wang S, Ke Y, Wu T, Sun R, Qian J, Du Y. Riok3 inhibits the antiviral immune response by facilitating TRIM40-mediated RIG-I and MDA5 degradation. Cell Rep 2021; 35:109272. [PMID: 34161773 PMCID: PMC8363743 DOI: 10.1016/j.celrep.2021.109272] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 01/07/2021] [Accepted: 05/27/2021] [Indexed: 02/07/2023] Open
Abstract
The type I interferon (IFN) pathway is a key component of innate immune response upon invasion of foreign pathogens. It is also under precise control to prevent excessive upregulation and undesired inflammation cascade. In the present study, we report that Riok3, an atypical kinase, negatively regulates retinoic acid-inducible gene-I (RIG-I)-like receptors (RLRs) sensing-induced type I IFN signaling. Riok3 deficiency selectively inhibits RNA viral replication in vitro, resulting from an upregulated type I IFN pathway. Mice with myeloid-specific Riok3 knockout also show a more robust induction of type I IFN upon RNA virus infection and are more resistant to RNA virus-induced pathogenesis. Mechanistically, Riok3 recruits and interacts with the E3 ubiquitin ligase TRIM40, leading to the degradation of RIG-I and melanoma differentiation-associated gene-5 (MDA5) via K48- and K27-linked ubiquitination. Collectively, our data reveal the mechanism that Riok3 employs to be a negative regulator of antiviral innate immunity.
Collapse
Affiliation(s)
- Yong Shen
- Cancer Institute, ZJU-UCLA Joint Center for Medical Education and Research, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China; Department of Breast Surgery, The First Affiliated Hospital, Zhejiang Chinese Medical University, Hangzhou, P.R. China
| | - Kejun Tang
- Cancer Institute, ZJU-UCLA Joint Center for Medical Education and Research, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China; Department of Surgery, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, P.R. China
| | - Dongdong Chen
- Cancer Institute, ZJU-UCLA Joint Center for Medical Education and Research, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China
| | - Mengying Hong
- Cancer Institute, ZJU-UCLA Joint Center for Medical Education and Research, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China
| | - Fangfang Sun
- Cancer Institute, ZJU-UCLA Joint Center for Medical Education and Research, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China
| | - SaiSai Wang
- Department of Colorectal Surgery, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China
| | - Yuehai Ke
- Department of Pathology and Pathophysiology, Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
| | - Tingting Wu
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Ren Sun
- Cancer Institute, ZJU-UCLA Joint Center for Medical Education and Research, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China; Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA; School of Biomedical Sciences, LKS Faculty of Medicine, The Hongkong University, Hongkong, China.
| | - Jing Qian
- Pharmaceutical Informatics Institute, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, P.R. China.
| | - Yushen Du
- Cancer Institute, ZJU-UCLA Joint Center for Medical Education and Research, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, P.R. China; Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.
| |
Collapse
|
19
|
RACK1 degrades MAVS to promote bovine ephemeral fever virus replication via upregulating E3 ubiquitin ligase STUB1. Vet Microbiol 2021; 257:109096. [PMID: 33940459 DOI: 10.1016/j.vetmic.2021.109096] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 04/25/2021] [Indexed: 11/21/2022]
Abstract
Receptors for activated C kinase 1 (RACK1) could competitively combine with mitochondrial antiviral signaling protein (MAVS) to inhibit the type I interferon (IFN) signaling pathway during viral infection in vitro. However, whether RACK1 can degrade MAVS to enhance viral replication is still unknown. In this study, we found that bovine epidemic fever virus (BEFV) infection triggered the expression of RACK1. Overexpression of RACK1 promoted BEFV replication, while knockdown of RACK1 inhibited the replication of BEFV. Further research showed that RACK1 inhibited the type I IFN signaling pathway during BEFV infection by degrading MAVS, and RACK1 degraded MAVS via the ubiquitin-proteasome system. Mechanistically, RACK1 up-regulated the expression of E3 ubiquitin ligase STIP1 homology and U-box containing protein 1 (STUB1), thereby promoting the ubiquitination and degradation of MAVS. In addition, RACK1 degraded MAVS by enhancing the interaction between STUB1 and MAVS but not via its interaction with STUB1. Overall, our study reveals a novel mechanism by which RACK1 inhibits the type I IFN signaling pathway to BEFV infection through degradation of MAVS, thereby promoting viral infection. These findings provide a new perspective for the MAVS degradation regulated by RACK1.
Collapse
|
20
|
Budroni V, Versteeg GA. Negative Regulation of the Innate Immune Response through Proteasomal Degradation and Deubiquitination. Viruses 2021; 13:584. [PMID: 33808506 PMCID: PMC8066222 DOI: 10.3390/v13040584] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/26/2021] [Accepted: 03/27/2021] [Indexed: 12/25/2022] Open
Abstract
The rapid and dynamic activation of the innate immune system is achieved through complex signaling networks regulated by post-translational modifications modulating the subcellular localization, activity, and abundance of signaling molecules. Many constitutively expressed signaling molecules are present in the cell in inactive forms, and become functionally activated once they are modified with ubiquitin, and, in turn, inactivated by removal of the same post-translational mark. Moreover, upon infection resolution a rapid remodeling of the proteome needs to occur, ensuring the removal of induced response proteins to prevent hyperactivation. This review discusses the current knowledge on the negative regulation of innate immune signaling pathways by deubiquitinating enzymes, and through degradative ubiquitination. It focusses on spatiotemporal regulation of deubiquitinase and E3 ligase activities, mechanisms for re-establishing proteostasis, and degradation through immune-specific feedback mechanisms vs. general protein quality control pathways.
Collapse
Affiliation(s)
| | - Gijs A. Versteeg
- Max Perutz Labs, Department of Microbiology, Immunobiology, and Genetics, University of Vienna, Vienna Biocenter (VBC), 1030 Vienna, Austria;
| |
Collapse
|
21
|
Kobpornchai P, Tiffney EA, Adisakwattana P, Flynn RJ. Trichinella spiralis cystatin, TsCstN, modulates STAT4/IL-12 to specifically suppress IFN-γ production. Cell Immunol 2021; 362:104303. [PMID: 33611078 DOI: 10.1016/j.cellimm.2021.104303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 01/21/2021] [Accepted: 01/22/2021] [Indexed: 01/13/2023]
Abstract
We have previously identified a cystatin, TsCstN, derived from the L1 stage of Trichinella spiralis and have shown that this protein is internalised in macrophages. Here we sought to address if this macrophage-TsCstN interaction could alter downstream T-cell priming. Using LPS-primed macrophages to stimulate T-cells in a co-culture system with or without TsCstN we assessed the resultant T-cell outcomes. IFN-γ, both protein and mRNA, but not IL-17A was negatively regulated by inclusion of TsCstN during macrophage priming. We identified a cell-cell contact independent change in the levels of IL-12 that led to altered phosphorylated STAT4 levels and translocation. TsCstN also negatively regulated the autonomous response in the myotubule cell line, C2C12. This work identifies a potential pathyway for L1 larvae to evade protective Th1 based immune responses and establish muscle-stage T. spiralis infection.
Collapse
Affiliation(s)
- Porntida Kobpornchai
- Department of Infection Biology and Microbiome, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, L3 5RF, UK; Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Ellen-Alana Tiffney
- Department of Infection Biology and Microbiome, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, L3 5RF, UK
| | - Poom Adisakwattana
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
| | - Robin J Flynn
- Department of Infection Biology and Microbiome, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, L3 5RF, UK.
| |
Collapse
|
22
|
The Role of Ubiquitination in NF-κB Signaling during Virus Infection. Viruses 2021; 13:v13020145. [PMID: 33498196 PMCID: PMC7908985 DOI: 10.3390/v13020145] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 12/15/2022] Open
Abstract
The nuclear factor κB (NF-κB) family are the master transcription factors that control cell proliferation, apoptosis, the expression of interferons and proinflammatory factors, and viral infection. During viral infection, host innate immune system senses viral products, such as viral nucleic acids, to activate innate defense pathways, including the NF-κB signaling axis, thereby inhibiting viral infection. In these NF-κB signaling pathways, diverse types of ubiquitination have been shown to participate in different steps of the signal cascades. Recent advances find that viruses also modulate the ubiquitination in NF-κB signaling pathways to activate viral gene expression or inhibit host NF-κB activation and inflammation, thereby facilitating viral infection. Understanding the role of ubiquitination in NF-κB signaling during viral infection will advance our knowledge of regulatory mechanisms of NF-κB signaling and pave the avenue for potential antiviral therapeutics. Thus, here we systematically review the ubiquitination in NF-κB signaling, delineate how viruses modulate the NF-κB signaling via ubiquitination and discuss the potential future directions.
Collapse
|
23
|
Zong Z, Zhang Z, Wu L, Zhang L, Zhou F. The Functional Deubiquitinating Enzymes in Control of Innate Antiviral Immunity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2002484. [PMID: 33511009 PMCID: PMC7816709 DOI: 10.1002/advs.202002484] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/09/2020] [Indexed: 05/11/2023]
Abstract
Innate antiviral immunity is the first line of host defense against invading viral pathogens. Immunity activation primarily relies on the recognition of pathogen-associated molecular patterns (PAMPs) by pattern recognition receptors (PRRs). Viral proteins or nucleic acids mainly engage three classes of PRRs: Toll-like receptors (TLRs), retinoic acid-inducible gene I (RIG-I)-like receptors (RLRs), and DNA sensor cyclic GMP-AMP (cGAMP) synthase (cGAS). These receptors initiate a series of signaling cascades that lead to the production of proinflammatory cytokines and type I interferon (IFN-I) in response to viral infection. This system requires precise regulation to avoid aberrant activation. Emerging evidence has unveiled the crucial roles that the ubiquitin system, especially deubiquitinating enzymes (DUBs), play in controlling immune responses. In this review, an overview of the most current findings on the function of DUBs in the innate antiviral immune pathways is provided. Insights into the role of viral DUBs in counteracting host immune responses are also provided. Furthermore, the prospects and challenges of utilizing DUBs as therapeutic targets for infectious diseases are discussed.
Collapse
Affiliation(s)
- Zhi Zong
- Department of Hepatobiliary and Pancreatic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineHangzhou310003P. R. China
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058P. R. China
| | - Zhengkui Zhang
- Institute of Biology and Medical ScienceSoochow UniversitySuzhou215123P. R. China
| | - Liming Wu
- Department of Hepatobiliary and Pancreatic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineHangzhou310003P. R. China
| | - Long Zhang
- Department of Hepatobiliary and Pancreatic SurgeryThe First Affiliated HospitalZhejiang University School of MedicineHangzhou310003P. R. China
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Innovation Center for Cell Signaling NetworkLife Sciences InstituteZhejiang UniversityHangzhou310058P. R. China
| | - Fangfang Zhou
- Institute of Biology and Medical ScienceSoochow UniversitySuzhou215123P. R. China
| |
Collapse
|
24
|
Limanaqi F, Busceti CL, Biagioni F, Lazzeri G, Forte M, Schiavon S, Sciarretta S, Frati G, Fornai F. Cell Clearing Systems as Targets of Polyphenols in Viral Infections: Potential Implications for COVID-19 Pathogenesis. Antioxidants (Basel) 2020; 9:E1105. [PMID: 33182802 PMCID: PMC7697279 DOI: 10.3390/antiox9111105] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Revised: 10/29/2020] [Accepted: 11/08/2020] [Indexed: 02/06/2023] Open
Abstract
The novel coronavirus named severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has generated the ongoing coronavirus disease-2019 (COVID-19) pandemic, still with an uncertain outcome. Besides pneumonia and acute lung injury (ALI) or acute respiratory distress syndrome (ARDS), other features became evident in the context of COVID-19. These includes endothelial and coagulation dysfunction with disseminated intravascular coagulation (DIC), and multiple organ dysfunction syndrome (MODS), along with the occurrence of neurological alterations. The multi-system nature of such viral infection is a witness to the exploitation and impairment of ubiquitous subcellular and metabolic pathways for the sake of its life-cycle, ranging from host cell invasion, replication, transmission, up to a cytopathic effect and overt systemic inflammation. In this frame, alterations in cell-clearing systems of the host are emerging as a hallmark in the pathogenesis of various respiratory viruses, including SARS-CoV-2. Indeed, exploitation of the autophagy and proteasome pathways might contribute not only to the replication of the virus at the site of infection but also to the spreading of either mature virions or inflammatory mediators at both cellular and multisystem levels. In this frame, besides a pharmacological therapy, many researchers are wondering if some non-pharmacological substances might counteract or positively modulate the course of the infection. The pharmacological properties of natural compounds have gained increasing attention in the field of alternative and adjunct therapeutic approaches to several diseases. In particular, several naturally-occurring herbal compounds (mostly polyphenols) are reported to produce widespread antiviral, anti-inflammatory, and anti-oxidant effects while acting as autophagy and (immuno)-proteasome modulators. This article attempts to bridge the perturbation of autophagy and proteasome pathways with the potentially beneficial effects of specific phytochemicals and flavonoids in viral infections, with a focus on the multisystem SARS-CoV-2 infection.
Collapse
Affiliation(s)
- Fiona Limanaqi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy; (F.L.); (G.L.)
| | - Carla Letizia Busceti
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077 Pozzilli, Italy (F.B.); (M.F.); (S.S.); (G.F.)
| | - Francesca Biagioni
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077 Pozzilli, Italy (F.B.); (M.F.); (S.S.); (G.F.)
| | - Gloria Lazzeri
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy; (F.L.); (G.L.)
| | - Maurizio Forte
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077 Pozzilli, Italy (F.B.); (M.F.); (S.S.); (G.F.)
| | - Sonia Schiavon
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, 40100 Latina, Italy;
| | - Sebastiano Sciarretta
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077 Pozzilli, Italy (F.B.); (M.F.); (S.S.); (G.F.)
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, 40100 Latina, Italy;
| | - Giacomo Frati
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077 Pozzilli, Italy (F.B.); (M.F.); (S.S.); (G.F.)
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Corso della Repubblica 79, 40100 Latina, Italy;
| | - Francesco Fornai
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126 Pisa, Italy; (F.L.); (G.L.)
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077 Pozzilli, Italy (F.B.); (M.F.); (S.S.); (G.F.)
| |
Collapse
|
25
|
Abstract
Viruses commonly antagonize the antiviral type I interferon response by targeting signal transducer and activator of transcription 1 (STAT1) and STAT2, key mediators of interferon signaling. Other STAT family members mediate signaling by diverse cytokines important to infection, but their relationship with viruses is more complex. Importantly, virus-STAT interaction can be antagonistic or stimulatory depending on diverse viral and cellular factors. While STAT antagonism can suppress immune pathways, many viruses promote activation of specific STATs to support viral gene expression and/or produce cellular conditions conducive to infection. It is also becoming increasingly clear that viruses can hijack noncanonical STAT functions to benefit infection. For a number of viruses, STAT function is dynamically modulated through infection as requirements for replication change. Given the critical role of STATs in infection by diverse viruses, the virus-STAT interface is an attractive target for the development of antivirals and live-attenuated viral vaccines. Here, we review current understanding of the complex and dynamic virus-STAT interface and discuss how this relationship might be harnessed for medical applications.
Collapse
|
26
|
Yang C, Mai H, Peng J, Zhou B, Hou J, Jiang D. STAT4: an immunoregulator contributing to diverse human diseases. Int J Biol Sci 2020; 16:1575-1585. [PMID: 32226303 PMCID: PMC7097918 DOI: 10.7150/ijbs.41852] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 02/13/2020] [Indexed: 12/12/2022] Open
Abstract
Signal transducer and activator of transcription 4 (STAT4) is a member of the STAT family and localizes to the cytoplasm. STAT4 is phosphorylated after a variety of cytokines bind to the membrane, and then dimerized STAT4 translocates to the nucleus to regulate gene expression. We reviewed the essential role played by STAT4 in a wide variety of cells and the pathogenesis of diverse human diseases, especially many kinds of autoimmune and inflammatory diseases, via activation by different cytokines through the Janus kinase (JAK)-STAT signaling pathway.
Collapse
Affiliation(s)
- Chou Yang
- State Key Laboratory of Organ Failure Research, Guangdong Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Haoming Mai
- State Key Laboratory of Organ Failure Research, Guangdong Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Jinxin Peng
- State Key Laboratory of Organ Failure Research, Guangdong Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Bin Zhou
- State Key Laboratory of Organ Failure Research, Guangdong Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Jinlin Hou
- State Key Laboratory of Organ Failure Research, Guangdong Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, GuangZhou, China
| | - Deke Jiang
- State Key Laboratory of Organ Failure Research, Guangdong Key Laboratory of Viral Hepatitis Research, Department of Infectious Diseases and Hepatology Unit, Nanfang Hospital, Southern Medical University, GuangZhou, China
| |
Collapse
|
27
|
Refolo G, Vescovo T, Piacentini M, Fimia GM, Ciccosanti F. Mitochondrial Interactome: A Focus on Antiviral Signaling Pathways. Front Cell Dev Biol 2020; 8:8. [PMID: 32117959 PMCID: PMC7033419 DOI: 10.3389/fcell.2020.00008] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 01/10/2020] [Indexed: 01/10/2023] Open
Abstract
In the last years, proteomics has represented a valuable approach to elucidate key aspects in the regulation of type I/III interferons (IFNs) and autophagy, two main processes involved in the response to viral infection, to unveil the molecular strategies that viruses have evolved to counteract these processes. Besides their main metabolic roles, mitochondria are well recognized as pivotal organelles in controlling signaling pathways essential to restrain viral infections. In particular, a major role in antiviral defense is played by mitochondrial antiviral signaling (MAVS) protein, an adaptor protein that coordinates the activation of IFN inducing pathways and autophagy at the mitochondrial level. Here, we provide an overview of how mass spectrometry-based studies of protein–protein interactions and post-translational modifications (PTMs) have fostered our understanding of the molecular mechanisms that control the mitochondria-mediated antiviral immunity.
Collapse
Affiliation(s)
- Giulia Refolo
- Lazzaro Spallanzani, National Institute for Infectious Diseases - IRCCS, Rome, Italy
| | - Tiziana Vescovo
- Lazzaro Spallanzani, National Institute for Infectious Diseases - IRCCS, Rome, Italy
| | - Mauro Piacentini
- Lazzaro Spallanzani, National Institute for Infectious Diseases - IRCCS, Rome, Italy.,Department of Biology, University of Rome Tor Vergata, Rome, Italy
| | - Gian Maria Fimia
- Lazzaro Spallanzani, National Institute for Infectious Diseases - IRCCS, Rome, Italy.,Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Fabiola Ciccosanti
- Lazzaro Spallanzani, National Institute for Infectious Diseases - IRCCS, Rome, Italy
| |
Collapse
|
28
|
Tao X, Chu B, Xin D, Li L, Sun Q. USP27X negatively regulates antiviral signaling by deubiquitinating RIG-I. PLoS Pathog 2020; 16:e1008293. [PMID: 32027733 PMCID: PMC7029883 DOI: 10.1371/journal.ppat.1008293] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 02/19/2020] [Accepted: 12/23/2019] [Indexed: 12/22/2022] Open
Abstract
RIG-I plays important roles in pathogen sensing and activation of antiviral innate immune responses in response to RNA viruses. RIG-I-mediated signaling must be precisely controlled to maintain innate immune signaling homeostasis. Previous studies demonstrated that lysine 63 (K63)-linked polyubiquitination of RIG-I is vital for its activation, but the mechanisms through which RIG-I is deubiquitinated to control innate immune responses are not well understood. Here we identified USP27X as a negative regulator of antiviral signaling in response to RNA viruses through siRNA library screening. Further functional studies indicated that USP27X negatively modulated RIG-I-mediated antiviral signaling in a deubiquitinase-dependent manner. Mechanistically, we found that USP27X removed K63-linked polyubiquitin chains from RIG-I to negatively modulate type I interferon signaling. Collectively, these studies uncover a novel negative regulatory role of USP27X in targeting RIG-I to balance innate immune responses.
Collapse
Affiliation(s)
- Xinyue Tao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Bei Chu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- School of Life Sciences, University of Science and Technology of China, Hefei, Anhui, China
| | - Di Xin
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Lin Li
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Qinmiao Sun
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
29
|
Ablasser A, Hur S. Regulation of cGAS- and RLR-mediated immunity to nucleic acids. Nat Immunol 2020; 21:17-29. [PMID: 31819255 DOI: 10.1038/s41590-019-0556-1] [Citation(s) in RCA: 195] [Impact Index Per Article: 48.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Accepted: 10/29/2019] [Indexed: 12/13/2022]
Abstract
Pathogen-derived nucleic acids are crucial signals for innate immunity. Despite the structural similarity between those and host nucleic acids, mammalian cells have been able to evolve powerful innate immune signaling pathways that originate from the detection of cytosolic nucleic acid species, one of the most prominent being the cGAS-STING pathway for DNA and the RLR-MAVS pathway for RNA, respectively. Recent advances have revealed a plethora of regulatory mechanisms that are crucial for balancing the activity of nucleic acid sensors for the maintenance of overall cellular homeostasis. Elucidation of the various mechanisms that enable cells to maintain control over the activity of cytosolic nucleic acid sensors has provided new insight into the pathology of human diseases and, at the same time, offers a rich and largely unexplored source for new therapeutic targets. This Review addresses the emerging literature on regulation of the sensing of cytosolic DNA and RNA via cGAS and RLRs.
Collapse
Affiliation(s)
- Andrea Ablasser
- Global Health Institute, Swiss Federal Institute of Technology, Lausanne, Switzerland.
| | - Sun Hur
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, USA.
- Program in Cellular and Molecular Medicine, Boston Children's Hospital, Boston, MA, USA.
| |
Collapse
|
30
|
Lee HC, Chathuranga K, Lee JS. Intracellular sensing of viral genomes and viral evasion. Exp Mol Med 2019; 51:1-13. [PMID: 31827068 PMCID: PMC6906418 DOI: 10.1038/s12276-019-0299-y] [Citation(s) in RCA: 351] [Impact Index Per Article: 70.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/15/2019] [Accepted: 05/22/2019] [Indexed: 12/11/2022] Open
Abstract
During viral infection, virus-derived cytosolic nucleic acids are recognized by host intracellular specific sensors. The efficacy of this recognition system is crucial for triggering innate host defenses, which then stimulate more specific adaptive immune responses against the virus. Recent studies show that signal transduction pathways activated by sensing proteins are positively or negatively regulated by many modulators to maintain host immune homeostasis. However, viruses have evolved several strategies to counteract/evade host immune reactions. These systems involve viral proteins that interact with host sensor proteins and prevent them from detecting the viral genome or from initiating immune signaling. In this review, we discuss key regulators of cytosolic sensor proteins and viral proteins based on experimental evidence.
Collapse
Affiliation(s)
- Hyun-Cheol Lee
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, Korea
- Central Research Institute, Komipharm International Co., Ltd, Shiheung, 15094, Korea
| | - Kiramage Chathuranga
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, Korea
| | - Jong-Soo Lee
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, Korea.
| |
Collapse
|
31
|
Li SN, Ling T, Yang YX, Huang JP, Xu LG. CHID1 positively regulates RLR antiviral signaling by targeting the RIG-I/VISA signalosome. J Med Virol 2019; 91:1668-1678. [PMID: 31106867 DOI: 10.1002/jmv.25508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/09/2019] [Accepted: 05/09/2019] [Indexed: 11/09/2022]
Abstract
Retinoic acid-inducible gene-I (RIG-I) belongs to the RIGI-like receptors (RLRs), a class of primary pattern recognition receptors. It senses viral double-strand RNA in the cytoplasm and delivers the activated signal to its adaptor virus-induced signaling adapter (VISA), which then recruits the downstream TNF receptor-associated factors and kinases, triggering a downstream signal cascade that leads to the production of proinflammatory cytokines and antiviral interferons (IFNs). However, the mechanism of RIG-I-mediated antiviral signaling is not fully understood. Here, we demonstrate that chitinase domain-containing 1 (CHID1), a member of the chitinase family, positively regulates the RLR antiviral signaling pathway by targeting the RIG-I/VISA signalosome. CHID1 overexpression enhances the activation of nuclear factor κB (NF-кB) and interferon regulatory factor 3 (IRF3) triggered by Sendai virus (SeV) by promoting the polyubiquitination of RIG-I and VISA, thereby potentiating IFN-β production. CHID1 knockdown in human 239T cells inhibits SeV-induced activation of IRF3 and NF-κB and the induction of IFN-β. These results indicate that CHID1 positively regulates RLR antiviral signal, revealing the novel mechanism of the RIG-I antiviral signaling pathway.
Collapse
Affiliation(s)
- Sheng-Na Li
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Ting Ling
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Ya-Xian Yang
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Jing-Ping Huang
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| | - Liang-Guo Xu
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, Jiangxi, China
| |
Collapse
|
32
|
Takaoka A, Yamada T. Regulation of signaling mediated by nucleic acid sensors for innate interferon-mediated responses during viral infection. Int Immunol 2019; 31:477-488. [PMID: 30985869 PMCID: PMC7110195 DOI: 10.1093/intimm/dxz034] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 04/12/2019] [Indexed: 12/17/2022] Open
Abstract
Type I and type III interferons are important anti-viral cytokines that are massively induced during viral infection. This dynamic process is regulated by many executors and regulators for efficient eradication of invading viruses and protection from harmful, excessive responses. An array of innate sensors recognizes virus-derived nucleic acids to activate their downstream signaling to evoke cytokine responses including interferons. In particular, a cytoplasmic RNA sensor RIG-I (retinoic acid-inducible gene I) is involved in the detection of multiple types of not only RNA viruses but also DNA viruses. Accumulating findings have revealed that activation of nucleic acid sensors and the related signaling mediators is regulated on the basis of post-translational modification such as ubiquitination, phosphorylation and ADP-ribosylation. In addition, long non-coding RNAs (lncRNAs) have been implicated as a new class of regulators in innate signaling. A comprehensive understanding of the regulatory mechanisms of innate sensor activation and its signaling in host-virus interaction will provide a better therapeutic strategy to efficiently control viral infection and maintain immune homeostasis.
Collapse
Affiliation(s)
- Akinori Takaoka
- Division of Signaling in Cancer and Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Taisho Yamada
- Division of Signaling in Cancer and Immunology, Institute for Genetic Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| |
Collapse
|
33
|
Brisse M, Ly H. Comparative Structure and Function Analysis of the RIG-I-Like Receptors: RIG-I and MDA5. Front Immunol 2019; 10:1586. [PMID: 31379819 PMCID: PMC6652118 DOI: 10.3389/fimmu.2019.01586] [Citation(s) in RCA: 218] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 06/25/2019] [Indexed: 12/12/2022] Open
Abstract
RIG-I (Retinoic acid-inducible gene I) and MDA5 (Melanoma Differentiation-Associated protein 5), collectively known as the RIG-I-like receptors (RLRs), are key protein sensors of the pathogen-associated molecular patterns (PAMPs) in the form of viral double-stranded RNA (dsRNA) motifs to induce expression of type 1 interferons (IFN1) (IFNα and IFNβ) and other pro-inflammatory cytokines during the early stage of viral infection. While RIG-I and MDA5 share many genetic, structural and functional similarities, there is increasing evidence that they can have significantly different strategies to recognize different pathogens, PAMPs, and in different host species. This review article discusses the similarities and differences between RIG-I and MDA5 from multiple perspectives, including their structures, evolution and functional relationships with other cellular proteins, their differential mechanisms of distinguishing between host and viral dsRNAs and interactions with host and viral protein factors, and their immunogenic signaling. A comprehensive comparative analysis can help inform future studies of RIG-I and MDA5 in order to fully understand their functions in order to optimize potential therapeutic approaches targeting them.
Collapse
Affiliation(s)
- Morgan Brisse
- Biochemistry, Molecular Biology, and Biophysics Graduate Program, University of Minnesota, Twin Cities, St. Paul, MN, United States
- Department of Veterinary & Biomedical Sciences, University of Minnesota, Twin Cities, St. Paul, MN, United States
| | - Hinh Ly
- Department of Veterinary & Biomedical Sciences, University of Minnesota, Twin Cities, St. Paul, MN, United States
| |
Collapse
|
34
|
The long noncoding RNA Lnczc3h7a promotes a TRIM25-mediated RIG-I antiviral innate immune response. Nat Immunol 2019; 20:812-823. [PMID: 31036902 DOI: 10.1038/s41590-019-0379-0] [Citation(s) in RCA: 125] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 03/18/2019] [Indexed: 12/22/2022]
Abstract
The helicase RIG-I initiates an antiviral immune response after recognition of pathogenic RNA. TRIM25, an E3 ubiquitin ligase, mediates K63-linked ubiquitination of RIG-I, which is crucial for RIG-I downstream signaling and the antiviral innate immune response. The components and mode of the RIG-I-initiated innate signaling remain to be fully understood. Here we identify a novel long noncoding RNA (Lnczc3h7a) that binds to TRIM25 and promotes RIG-I-mediated antiviral innate immune responses. Depletion of Lnczc3h7a impairs RIG-I signaling and the antiviral innate response to RNA viruses in vitro and in vivo. Mechanistically, Lnczc3h7a binds to both TRIM25 and activated RIG-I, serving as a molecular scaffold for stabilization of the RIG-I-TRIM25 complex at the early stage of viral infection. Lnczc3h7a facilitates TRIM25-mediated K63-linked ubiquitination of RIG-I and thus promotes downstream signaling transduction. Our findings reveal that host RNAs can enhance the response of innate immune sensors to foreign RNAs, ensuring effective antiviral defense.
Collapse
|
35
|
Zheng Y, Gao C. E3 ubiquitin ligases, the powerful modulator of innate antiviral immunity. Cell Immunol 2019; 340:103915. [PMID: 31054776 DOI: 10.1016/j.cellimm.2019.04.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Revised: 02/26/2019] [Accepted: 04/03/2019] [Indexed: 12/27/2022]
Abstract
During viral infection, the innate immune system represents the first defense line of the human body. The pathogen associated molecular patterns (PAMPs) from the viruses are recognized by pattern recognition receptors (PRRs) of the host cell, especially from those of the immune cells. Sensing of PAMPs by PRRs elicits an elegant signal transduction system, ultimately leading to the production of type I interferons (IFNs) and proinflammatory cytokines. Ubiquitination, with its versatile functions, plays a central role in modulating almost every single step of this signaling cascade. Ubiquitin ligases, which catalyze different types of ubiquitination correlating with multiple functions, are the key participant in fine-tuning antiviral signal transduction. In this review, we focus on summarizing the ubiquitin ligases that regulate the key signaling molecules in antiviral innate immunity.
Collapse
Affiliation(s)
- Yi Zheng
- State Key Laboratory of Microbial Technology, Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, The School of Basic Medical Sciences, Shandong University, Jinan, Shandong 250012, China
| | - Chengjiang Gao
- State Key Laboratory of Microbial Technology, Key Laboratory of Infection and Immunity of Shandong Province & Department of Immunology, The School of Basic Medical Sciences, Shandong University, Jinan, Shandong 250012, China.
| |
Collapse
|
36
|
A protein-interaction network of interferon-stimulated genes extends the innate immune system landscape. Nat Immunol 2019; 20:493-502. [DOI: 10.1038/s41590-019-0323-3] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 01/16/2019] [Indexed: 12/26/2022]
|
37
|
Tian Y, Wang ML, Zhao J. Crosstalk between Autophagy and Type I Interferon Responses in Innate Antiviral Immunity. Viruses 2019; 11:v11020132. [PMID: 30717138 PMCID: PMC6409909 DOI: 10.3390/v11020132] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 01/25/2019] [Accepted: 01/28/2019] [Indexed: 12/25/2022] Open
Abstract
Autophagy exhibits dual effects during viral infections, promoting the clearance of viral components and activating the immune system to produce antiviral cytokines. However, some viruses impair immune defenses by collaborating with autophagy. Mounting evidence suggests that the interaction between autophagy and innate immunity is critical to understanding the contradictory roles of autophagy. Type I interferon (IFN-I) is a crucial antiviral factor, and studies have indicated that autophagy affects IFN-I responses by regulating IFN-I and its receptors expression. Similarly, IFN-I and interferon-stimulated gene (ISG) products can harness autophagy to regulate antiviral immunity. Crosstalk between autophagy and IFN-I responses could be a vital aspect of the molecular mechanisms involving autophagy in innate antiviral immunity. This review briefly summarizes the approaches by which autophagy regulates antiviral IFN-I responses and highlights the recent advances on the mechanisms by which IFN-I and ISG products employ autophagy against viruses.
Collapse
Affiliation(s)
- Yu Tian
- Department of Microbiology, Anhui Medical University, Hefei 230032, China.
| | - Ming-Li Wang
- Department of Microbiology, Anhui Medical University, Hefei 230032, China.
- Wuhu Interferon Bio-Products Industry Research Institute Co., Ltd., Wuhu 241000, China.
| | - Jun Zhao
- Department of Microbiology, Anhui Medical University, Hefei 230032, China.
- Wuhu Interferon Bio-Products Industry Research Institute Co., Ltd., Wuhu 241000, China.
| |
Collapse
|
38
|
Sulforaphane promotes apoptosis, and inhibits proliferation and self-renewal of nasopharyngeal cancer cells by targeting STAT signal through miRNA-124-3p. Biomed Pharmacother 2018; 103:473-481. [DOI: 10.1016/j.biopha.2018.03.121] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/22/2022] Open
|
39
|
Xu C, Sun L, Liu W, Duan Z. Latent Membrane Protein 1 of Epstein-Barr Virus Promotes RIG-I Degradation Mediated by Proteasome Pathway. Front Immunol 2018; 9:1446. [PMID: 30002655 PMCID: PMC6031712 DOI: 10.3389/fimmu.2018.01446] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 06/11/2018] [Indexed: 11/13/2022] Open
Abstract
RIG-I signaling is critical to host innate immune response against RNA virus infection, and also can be activated against many kinds of cancer. Oncogene LMP1 of Epstein-Barr virus (EBV) contributes to various tumors progress. In this study, we have provided strong evidence that LMP1 inhibits Sendai virus mediated type I interferon production and downregulates RIG-I signaling pathway by promotion RIG-I degradation dependent on proteasome. Nineteen kinds of E3 ligase are identified by IP-MS as LMP1-interactors, they are candidate E3s, which are possibly recruited by LMP1 to mediate RIG-I degradation. CHIP is among these E3s, which has been reported to lead RIG-I degradation. Notably, we find C666-1, an EBV-positive nasopharyngeal carcinoma cell line, expresses low level of RIG-I, even treated with IFN-α, RIG-I expression could not be induced. This evidence indicates that EBV employs a unique strategy to evade RIG-I mediated immune responses.
Collapse
Affiliation(s)
- Chongfeng Xu
- Genetic Resources Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Lei Sun
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Wenjun Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Ziyuan Duan
- Genetic Resources Center, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
40
|
Zhao C, Jia M, Song H, Yu Z, Wang W, Li Q, Zhang L, Zhao W, Cao X. The E3 Ubiquitin Ligase TRIM40 Attenuates Antiviral Immune Responses by Targeting MDA5 and RIG-I. Cell Rep 2018; 21:1613-1623. [PMID: 29117565 DOI: 10.1016/j.celrep.2017.10.020] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 08/20/2017] [Accepted: 10/04/2017] [Indexed: 12/24/2022] Open
Abstract
Retinoic acid-inducible gene-I (RIG-I)-like receptors (RLRs), including melanoma differentiation-associated gene 5 (MDA5) and RIG-I, are crucial for host recognition of non-self RNAs, especially viral RNA. Thus, the expression and activation of RLRs play fundamental roles in eliminating the invading RNA viruses and maintaining immune homeostasis. However, how RLR expression is tightly regulated remains to be further investigated. In this study, we identified a major histocompatibility complex (MHC)-encoded gene, tripartite interaction motif 40 (TRIM40), as a suppressor of RLR signaling by directly targeting MDA5 and RIG-I. TRIM40 binds to MDA5 and RIG-I and promotes their K27- and K48-linked polyubiquitination via its E3 ligase activity, leading to their proteasomal degradation. TRIM40 deficiency enhances RLR-triggered signaling. Consequently, TRIM40 deficiency greatly enhances antiviral immune responses and decreases viral replication in vivo. Thus, we demonstrate that TRIM40 limits RLR-triggered innate activation, suggesting TRIM40 as a potential therapeutic target for the control of viral infection.
Collapse
Affiliation(s)
- Chunyuan Zhao
- Department of Immunology & Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100005, China
| | - Mutian Jia
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong 250012, China
| | - Hui Song
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong 250012, China
| | - Zhongxia Yu
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong 250012, China
| | - Wenwen Wang
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong 250012, China
| | - Qi Li
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong 250012, China
| | - Lining Zhang
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, China
| | - Wei Zhao
- Department of Immunology, School of Basic Medical Science, Shandong University, Jinan, Shandong 250012, China; State Key Laboratory of Microbial Technology, Shandong University, Jinan, Shandong 250012, China.
| | - Xuetao Cao
- Department of Immunology & Center for Immunotherapy, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100005, China; National Key Laboratory of Medical Immunology & Institute of Immunology, Second Military Medical University, Shanghai, China.
| |
Collapse
|
41
|
Liu Q, Wu Y, Qin Y, Hu J, Xie W, Qin FXF, Cui J. Broad and diverse mechanisms used by deubiquitinase family members in regulating the type I interferon signaling pathway during antiviral responses. SCIENCE ADVANCES 2018; 4:eaar2824. [PMID: 29732405 PMCID: PMC5931765 DOI: 10.1126/sciadv.aar2824] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 03/20/2018] [Indexed: 05/16/2023]
Abstract
The innate immune response conferred by type I interferons is essential for host defense against viral infection but needs to be tightly controlled to avoid immunopathology. We performed a systematic functional screening by CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9) knockout and overexpression to investigate the roles of the deubiquitinating enzyme (DUB) family in regulating antiviral immunity. We demonstrated that the expression of a large fraction of DUBs underwent complex temporal alteration, suggesting a dynamic program of feedback regulation. Moreover, we identified previously unrecognized roles of a subset of DUBs, including USP5, USP14, USP22, USP48, USP52, COPS5, and BRCC3, in inhibiting antiviral immunity at various levels. We explored an unexpected mechanism where multiple DUBs, such as USP5 and USP22, form diverse signalosomes with E3 ligases or DUBs to alter the substrates' ubiquitination state instead of directly cleaving the ubiquitin chains on substrates via their protease activity. Altogether, our study has revealed a panoramic view of the broad and dynamic involvement of DUB family proteins in regulating antiviral responses.
Collapse
Affiliation(s)
- Qingxiang Liu
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
| | - Yaoxing Wu
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
| | - Yunfei Qin
- Guangdong Provincial Key Laboratory of Liver Disease, Cell-Gene Therapy Translational Medicine Research Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China
| | - Jiajia Hu
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
| | - Weihong Xie
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
| | - F. Xiao-Feng Qin
- Center of Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
- Suzhou Institute of Systems Medicine, Suzhou, Jiangsu 215123, China
- Corresponding author. (J.C.); (F.X.-F.Q.)
| | - Jun Cui
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
- Corresponding author. (J.C.); (F.X.-F.Q.)
| |
Collapse
|
42
|
MLL5 suppresses antiviral innate immune response by facilitating STUB1-mediated RIG-I degradation. Nat Commun 2018; 9:1243. [PMID: 29593341 PMCID: PMC5871759 DOI: 10.1038/s41467-018-03563-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 02/23/2018] [Indexed: 12/27/2022] Open
Abstract
Trithorax group protein MLL5 is an important epigenetic modifier that controls cell cycle progression, chromatin architecture maintenance, and hematopoiesis. However, whether MLL5 has a role in innate antiviral immunity is largely unknown. Here we show that MLL5 suppresses the RIG-I-mediated anti-viral immune response. Mll5-deficient mice infected with vesicular stomatitis virus show enhanced anti-viral innate immunity, reduced morbidity, and viral load. Mechanistically, a fraction of MLL5 located in the cytoplasm interacts with both RIG-I and its E3 ubiquitin ligase STUB1, which promotes K48-linked polyubiquitination and proteasomal degradation of RIG-I. MLL5 deficiency attenuates the RIG-I and STUB1 association, reducing K48-linked polyubiquitination and accumulation of RIG-I protein in cells. Upon virus infection, nuclear MLL5 protein translocates from the nucleus to the cytoplasm inducing STUB1-mediated degradation of RIG-I. Our study uncovers a previously unrecognized role for MLL5 in antiviral innate immune responses and suggests a new target for controlling viral infection. MLL5 is an essential epigenetic modifier involved in cell cycle progression, chromatin architecture and hematopoiesis. Here the authors establish that MLL5 suppresses the innate immune response in a murine model of virus infection by targeting and promoting degradation of RIG-I.
Collapse
|
43
|
Li K, Zhong B. Regulation of Cellular Antiviral Signaling by Modifications of Ubiquitin and Ubiquitin-like Molecules. Immune Netw 2018; 18:e4. [PMID: 29503737 PMCID: PMC5833123 DOI: 10.4110/in.2018.18.e4] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/19/2017] [Accepted: 12/21/2017] [Indexed: 12/12/2022] Open
Abstract
The initiation of cellular antiviral signaling depends on host pattern-recognition receptors (PRRs)-mediated recognition of viral nucleic acids that are known as classical pathogen-associated molecular patterns (PAMPs). PRRs recruit adaptor proteins and kinases to activate transcription factors and epigenetic modifiers to regulate transcription of hundreds of genes, the products of which collaborate to elicit antiviral responses. In addition, PRRs-triggered signaling induces activation of various inflammasomes which leads to the release of IL-1β and inflammation. Recent studies have demonstrated that PRRs-triggered signaling is critically regulated by ubiquitin and ubiquitin-like molecules. In this review, we first summarize an updated understanding of cellular antiviral signaling and virus-induced activation of inflammasome and then focus on the regulation of key components by ubiquitin and ubiquitin-like molecules.
Collapse
Affiliation(s)
- Kang Li
- Department of Immunology, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Bo Zhong
- Department of Immunology, Medical Research Institute, School of Medicine, Wuhan University, Wuhan 430071, China.,Department of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, China
| |
Collapse
|
44
|
Du Y, Duan T, Feng Y, Liu Q, Lin M, Cui J, Wang RF. LRRC25 inhibits type I IFN signaling by targeting ISG15-associated RIG-I for autophagic degradation. EMBO J 2018; 37:351-366. [PMID: 29288164 PMCID: PMC5793803 DOI: 10.15252/embj.201796781] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 10/29/2017] [Accepted: 12/01/2017] [Indexed: 11/09/2022] Open
Abstract
The RIG-I-like receptors (RLRs) are critical for protection against RNA virus infection, and their activities must be stringently controlled to maintain immune homeostasis. Here, we report that leucine-rich repeat containing protein 25 (LRRC25) is a key negative regulator of RLR-mediated type I interferon (IFN) signaling. Upon RNA virus infection, LRRC25 specifically binds to ISG15-associated RIG-I to promote interaction between RIG-I and the autophagic cargo receptor p62 and to mediate RIG-I degradation via selective autophagy. Depletion of either LRRC25 or ISG15 abrogates RIG-I-p62 interaction as well as the autophagic degradation of RIG-I. Collectively, our findings identify a previously unrecognized role of LRRC25 in type I IFN signaling activation by which LRRC25 acts as a secondary receptor to assist RIG-I delivery to autophagosomes for degradation in a p62-dependent manner.
Collapse
Affiliation(s)
- Yang Du
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Tianhao Duan
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yanchun Feng
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Qingxiang Liu
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Meng Lin
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jun Cui
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Rong-Fu Wang
- Center for Inflammation and Epigenetics, Houston Methodist Research Institute, Houston, TX, USA
- Department of Microbiology and Immunology, Weill Cornell Medical College, Cornell University, New York, NY, USA
- Institute of Biosciences and Technology, College of Medicine, Texas A & M University, Houston, TX, USA
| |
Collapse
|
45
|
Yoo L, Yoon AR, Yun CO, Chung KC. Covalent ISG15 conjugation to CHIP promotes its ubiquitin E3 ligase activity and inhibits lung cancer cell growth in response to type I interferon. Cell Death Dis 2018; 9:97. [PMID: 29367604 PMCID: PMC5833375 DOI: 10.1038/s41419-017-0138-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 11/10/2017] [Accepted: 11/10/2017] [Indexed: 12/20/2022]
Abstract
The carboxyl terminus of Hsp70-interacting protein (CHIP) acts as a ubiquitin E3 ligase and a link between the chaperones Hsp70/90 and the proteasome system, playing a vital role in maintaining protein homeostasis. CHIP regulates a number of proteins involved in a myriad of physiological and pathological processes, but the underlying mechanism of action via posttranslational modification has not been extensively explored. In this study, we investigated a novel modulatory mode of CHIP and its effect on CHIP enzymatic activity. ISG15, an ubiquitin-like modifier, is induced by type I interferon (IFN) stimulation and can be conjugated to target proteins (ISGylation). Here we demonstrated that CHIP may be a novel target of ISGylation in HEK293 cells stimulated with type I IFN. We also found that Lys143/144/145 and Lys287 residues in CHIP are important for and target residues of ISGylation. Moreover, ISGylation promotes the E3 ubiquitin ligase activity of CHIP, subsequently causing a decrease in levels of oncogenic c-Myc, one of its many ubiquitination targets, in A549 lung cancer cells and inhibiting A549 cell and tumor growth. In conclusion, the present study demonstrates that covalent ISG15 conjugation produces a novel CHIP regulatory mode that enhances the tumor-suppressive activity of CHIP, thereby contributing to the antitumor effect of type I IFN.
Collapse
Affiliation(s)
- Lang Yoo
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea
| | - A-Rum Yoon
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, 04763, Korea
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul, 04763, Korea
| | - Kwang Chul Chung
- Department of Systems Biology, College of Life Science and Biotechnology, Yonsei University, Seoul, 03722, Korea.
| |
Collapse
|
46
|
Nan Y, Wu C, Zhang YJ. Interplay between Janus Kinase/Signal Transducer and Activator of Transcription Signaling Activated by Type I Interferons and Viral Antagonism. Front Immunol 2017; 8:1758. [PMID: 29312301 PMCID: PMC5732261 DOI: 10.3389/fimmu.2017.01758] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/27/2017] [Indexed: 12/13/2022] Open
Abstract
Interferons (IFNs), which were discovered a half century ago, are a group of secreted proteins that play key roles in innate immunity against viral infection. The major signaling pathway activated by IFNs is the Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway, which leads to the expression of IFN-stimulated genes (ISGs), including many antiviral effectors. Viruses have evolved various strategies with which to antagonize the JAK/STAT pathway to influence viral virulence and pathogenesis. In recent years, notable progress has been made to better understand the JAK/STAT pathway activated by IFNs and antagonized by viruses. In this review, recent progress in research of the JAK/STAT pathway activated by type I IFNs, non-canonical STAT activation, viral antagonism of the JAK/STAT pathway, removing of the JAK/STAT antagonist from viral genome for attenuation, and the potential pathogenesis roles of tyrosine phosphorylation-independent non-canonical STATs activation during virus infection are discussed in detail. We expect that this review will provide new insight into the understanding the complexity of the interplay between JAK/STAT signaling and viral antagonism.
Collapse
Affiliation(s)
- Yuchen Nan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, China.,Molecular Virology Laboratory, VA-MD Regional College of Veterinary Medicine, Maryland Pathogen Research Institute, University of Maryland, College Park, MD, United States
| | - Chunyan Wu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Northwest A&F University, Yangling, China
| | - Yan-Jin Zhang
- Molecular Virology Laboratory, VA-MD Regional College of Veterinary Medicine, Maryland Pathogen Research Institute, University of Maryland, College Park, MD, United States
| |
Collapse
|
47
|
Zhou Y, He C, Wang L, Ge B. Post-translational regulation of antiviral innate signaling. Eur J Immunol 2017; 47:1414-1426. [PMID: 28744851 PMCID: PMC7163624 DOI: 10.1002/eji.201746959] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 06/22/2017] [Accepted: 07/24/2017] [Indexed: 12/23/2022]
Abstract
The innate immune system initiates immune responses by pattern‐recognition receptors (PRR). Virus‐derived nucleic acids are sensed by the retinoic acid‐inducible gene I (RIG‐I)‐like receptor (RLR) family and the toll‐like receptor (TLR) family as well as the DNA sensor cyclic GMP‐AMP (cGAMP) synthase (cGAS). These receptors activate IRF3/7 and NF‐κB signaling pathways to induce the expression of type I interferons (IFNs) and other cytokines firing antiviral responses within the cell. However, to achieve a favorable outcome for the host, a balanced production of IFNs and activation of antiviral responses is required. Post‐translational modifications (PTMs), such as the covalent linkage of functional groups to amino acid chains, are crucial for this immune homeostasis in antiviral responses. Canonical PTMs including phosphorylation and ubiquitination have been extensively studied and other PTMs such as methylation, acetylation, SUMOylation, ADP‐ribosylation and glutamylation are being increasingly implicated in antiviral innate immunity. Here we summarize our recent understanding of the most important PTMs regulating the antiviral innate immune response, and their role in virus‐related immune pathogenesis.
Collapse
Affiliation(s)
- Yilong Zhou
- Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chenxi He
- Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lin Wang
- Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Baoxue Ge
- Shanghai Key Lab of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| |
Collapse
|
48
|
Abstract
The carboxyl terminal of Hsp70-interacting protein (CHIP) is an E3 ubiquitin ligase that plays a pivotal role in the protein quality control system by shifting the balance of the folding-refolding machinery toward the degradative pathway. However, the precise mechanisms by which nonnative proteins are selected for degradation by CHIP either directly or indirectly via chaperone Hsp70 or Hsp90 are still not clear. In this review, we aim to provide a comprehensive model of the mechanism by which CHIP degrades its substrate in a chaperone-dependent or direct manner. In addition, through tight regulation of the protein level of its substrates, CHIP plays important roles in many physiological and pathological conditions, including cancers, neurological disorders, cardiac diseases, bone metabolism, immunity, and so on. Nonetheless, the precise mechanisms underlying the regulation of the immune system by CHIP are still poorly understood despite accumulating developments in our understanding of the regulatory roles of CHIP in both innate and adaptive immune responses. In this review, we also aim to provide a view of CHIP-mediated regulation of immune responses and the signaling pathways involved in the model described. Finally, we discuss the roles of CHIP in immune-related diseases.
Collapse
Affiliation(s)
- Shaohua Zhan
- a Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences , National Key Laboratory of Medical Molecular Biology & Department of Immunology , Dongcheng District , Beijing , China
| | - Tianxiao Wang
- b Key Laboratory of Carcinogenesis and Translational Research, Department of Head and Neck Surgery , Peking University Cancer Hospital & Institute , Beijing , China
| | - Wei Ge
- a Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences , National Key Laboratory of Medical Molecular Biology & Department of Immunology , Dongcheng District , Beijing , China
| |
Collapse
|
49
|
Si Y, Zhang Y, Chen Z, Zhou R, Zhang Y, Hao D, Yan D. Posttranslational Modification Control of Inflammatory Signaling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 1024:37-61. [DOI: 10.1007/978-981-10-5987-2_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
50
|
Innate recognition of microbial-derived signals in immunity and inflammation. SCIENCE CHINA-LIFE SCIENCES 2016; 59:1210-1217. [PMID: 27888386 DOI: 10.1007/s11427-016-0325-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 10/27/2016] [Indexed: 12/14/2022]
Abstract
Microbes generate a vast array of different types of conserved structural components called pathogen-associated molecular patterns (PAMPs), which can be recognized by cells of the innate immune system. This recognition of "nonself" signatures occurs through host pattern recognition receptors (PRRs), suggesting that microbial-derived signals are good targets for innate immunity to discriminate between self- and nonself. Such PAMP-PRR interactions trigger multiple but distinct downstream signaling cascades, subsequently leading to production of proinflammatory cytokines and interferons that tailor immune responses to particular microbes. Aberrant PRR signals have been associated with various inflammatory diseases and fine regulation of PRR signaling is essential for avoiding excessive inflammatory immune responses and maintaining immune homeostasis. In this review we summarize the ligands and signal transduction pathways of PRRs and highlight recent progress of the mechanisms involved in microbe-specific innate immune recognition during immune responses and inflammation, which may provide new targets for therapeutic intervention to the inflammatory disorders.
Collapse
|