1
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Wang P, Sun Y, Xu T. USP13 Cooperates with MARCH8 to Inhibit Antiviral Signaling by Targeting MAVS for Autophagic Degradation in Teleost. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:801-812. [PMID: 38214605 DOI: 10.4049/jimmunol.2300493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 12/22/2023] [Indexed: 01/13/2024]
Abstract
Mitochondrial antiviral signaling protein (MAVS), as a central adapter protein in retinoic acid-inducible gene I-like receptor signaling, is indispensable for innate antiviral immunity. Yet, the molecular mechanisms modulating the stability of MAVS are not fully understood in low vertebrates. In this study, we report that the deubiquitinase ubiquitin-specific protease 13 (USP13) acts as a negative regulator of antiviral immunity by targeting MAVS for selective autophagic degradation in teleost fish. USP13 is induced by RNA virus or polyinosinic:polycytidylic acid stimulation and acts as a negative regulator to potentiate viral replication in fish cells. Mechanistically, USP13 functions as a scaffold to enhance the interaction between MAVS and the E3 ubiquitin ligase MARCH8, thus promoting MARCH8 to catalyze MAVS through K27-linked polyubiquitination for selective autophagic degradation. Taken together, to our knowledge, our study demonstrates a novel mechanism by which viruses evade host antiviral immunity via USP13 in fish and provides a new idea for mammalian innate antiviral immunity.
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Affiliation(s)
- Pengfei Wang
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yuena Sun
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, Shanghai, China
- Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, Shanghai, China
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Marine Biomedical Science and Technology Innovation Platform of Lin-gang Special Area, Shanghai, China
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2
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Wang L, Song Y, Yan X, Xu T. A novel protein encoded by circVPS13D attenuates antiviral innate immunity by targeting MAVS in teleost fish. J Virol 2023; 97:e0088623. [PMID: 37843373 PMCID: PMC10688384 DOI: 10.1128/jvi.00886-23] [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: 06/12/2023] [Accepted: 09/06/2023] [Indexed: 10/17/2023] Open
Abstract
IMPORTANCE The expression of circVPS13D was upregulated with SCRV invasion, which proved that circVPS13D was involved in the regulation of the antiviral immune response. Our study revealed that the existence of circVPS13D promoted the replication of SCRV. Functionally, circVPS13D negatively regulates the antiviral responses of fish. Mechanistically, we confirmed that circVPS13D inhibited RLRs antiviral signaling pathway via the encoded protein VPS13D-170aa by targeting MAVS. Our study provided novel insights into the roles of protein-coding circRNAs and supported VPS13D-170aa as a negative regulator in the antiviral immune responses of teleost fish.
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Affiliation(s)
- Linchao Wang
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yanhong Song
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Xiaolong Yan
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
- Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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3
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Hao W, Zhang H, Hong P, Zhang X, Zhao X, Ma L, Qiu X, Ping H, Lu D, Yin Y. Critical role of VHL/BICD2/STAT1 axis in crystal-associated kidney disease. Cell Death Dis 2023; 14:680. [PMID: 37833251 PMCID: PMC10575931 DOI: 10.1038/s41419-023-06185-1] [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: 09/09/2022] [Accepted: 09/28/2023] [Indexed: 10/15/2023]
Abstract
Nephrolithiasis is highly prevalent and associated with the increased risk of kidney cancer. The tumor suppressor von Hippel-Lindau (VHL) is critical for renal cancer development, however, its role in kidney stone disease has not been fully elucidated until now. Here we reported VHL expression was upregulated in renal epithelial cells upon exposure to crystal. Utilizing Vhl+/mu mouse model, depletion of VHL exacerbated kidney inflammatory injury during nephrolithiasis. Conversely, overexpression of VHL limited crystal-induced lipid peroxidation and ferroptosis in a BICD2-depdendent manner. Mechanistically, VHL interacted with the cargo adaptor BICD2 and promoted itsd K48-linked poly-ubiquitination, consequently resulting in the proteasomal degradation of BICD2. Through promoting STAT1 nuclear translocation, BICD2 facilitated IFNγ signaling transduction and enhanced IFNγ-mediated suppression of cystine/glutamate antiporter system Xc-, eventually increasing cell sensitivity to ferroptosis. Moreover, we found that the BRAF inhibitor impaired the association of VHL with BICD2 through triggering BICD2 phosphorylation, ultimately causing severe ferroptosis and nephrotoxicity. Collectively, our results uncover the important role of VHL/BICD2/STAT1 axis in crystal kidney injury and provide a potential therapeutic target for treatment and prevention of renal inflammation and drug-induced nephrotoxicity.
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Affiliation(s)
- Wenyan Hao
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing, 100191, PR China
| | - Hongxian Zhang
- Department of Urology, Peking University Third Hospital, Beijing, 100191, PR China
| | - Peng Hong
- Department of Urology, Peking University Third Hospital, Beijing, 100191, PR China
| | - Xin Zhang
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing, 100191, PR China
| | - Xuyang Zhao
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing, 100191, PR China
| | - Lulin Ma
- Department of Urology, Peking University Third Hospital, Beijing, 100191, PR China
| | - Xiaoyan Qiu
- Department of Immunology, School of Basic Medical Sciences, Peking University, Beijing, 100191, PR China
| | - Hao Ping
- Department of Urology, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, PR China.
- Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University and Capital Medical University, Beijing Tongren Hospital, Beijing, 100730, PR China.
| | - Dan Lu
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing, 100191, PR China.
| | - Yuxin Yin
- Institute of Systems Biomedicine, Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Beijing Key Laboratory of Tumor Systems Biology, Peking University, Beijing, 100191, PR China.
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4
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Yue Y, Tang Y, Huang H, Zheng D, Liu C, Zhang H, Liu Y, Li Y, Sun X, Lu L. VBP1 negatively regulates CHIP and selectively inhibits the activity of hypoxia-inducible factor (HIF)-1α but not HIF-2α. J Biol Chem 2023:104829. [PMID: 37201586 DOI: 10.1016/j.jbc.2023.104829] [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: 01/15/2023] [Revised: 05/07/2023] [Accepted: 05/09/2023] [Indexed: 05/20/2023] Open
Abstract
Hypoxia-inducible factor-1 (HIF-1) is a critical transcription factor that regulates expression of genes involved in cellular adaptation to low oxygen levels. Aberrant regulation of the HIF-1 signaling pathway is linked to various human diseases. Previous studies have established that HIF-1α is rapidly degraded in a von Hippel-Lindau protien (pVHL)-dependent manner under normoxic conditions. In this study, we find that pVHL binding protein 1 (VBP1) is a negative regulator of HIF-1α but not HIF-2α using zebrafish as an in vivo model and in vitro cell culture models. Deletion of vbp1 in zebrafish caused Hif-1α accumulation and upregulation of Hif target genes. Moreover, vbp1 was involved in induction of hematopoietic stem cells (HSCs) under hypoxic conditions. However, VBP1 interacted with and promoted the degradation of HIF-1α in a pVHL-independent manner. Mechanistically, we identify the ubiquitin ligase CHIP and HSP70 as new VBP1 binding partners, and demonstrate that VBP1 negatively regulated CHIP and facilitated CHIP-mediated degradation of HIF-1α. In patients with clear cell renal cell carcinoma (ccRCC), lower VBP1 expression was associated with worse survival outcomes. In conclusion, our results link VBP1 with CHIP stability and provide insights into underlying molecular mechanisms of HIF-1α-driven pathological processes.
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Affiliation(s)
- Yiming Yue
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yanfei Tang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Hao Huang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Dongdong Zheng
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Cong Liu
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Haifeng Zhang
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yunzhang Liu
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Yun Li
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiangrong Sun
- Department of Physiology and Pathophysiology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Ling Lu
- Key Laboratory of Marine Drugs, The Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China; Laboratory for Marine Drugs and Biological Products, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
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5
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Xiao J, Zhong H, Feng H. Post-translational modifications and regulations of RLR signaling molecules in cytokines-mediated response in fish. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 141:104631. [PMID: 36608898 DOI: 10.1016/j.dci.2023.104631] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 12/19/2022] [Accepted: 01/02/2023] [Indexed: 06/17/2023]
Abstract
Teleosts rely on innate immunity to recognize and defense against pathogenic microorganisms. RIG-I-like receptor (RLR) family is the major pattern recognition receptor (PRR) to detect RNA viruses. After recognition of viral RNA components, these cytosolic sensors activate downstream signaling cascades to induce the expression of type I interferons (IFNs) and other cytokines firing antiviral responses. Meanwhile, numerous molecules take part in the complex regulation of RLR signals by various methods, such as post-translational modification (PTM), to produce an immune response that is appropriately balanced. In this review, we summarize our recent understanding of PTMs and other regulatory proteins in modulating RLR signaling pathway, which is helpful for systematically studying the regulatory mechanism of antiviral innate immunity of teleost fish.
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Affiliation(s)
- Jun Xiao
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Huijuan Zhong
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China
| | - Hao Feng
- State Key Laboratory of Developmental Biology of Freshwater Fish, College of Life Science, Hunan Normal University, Changsha, 410081, China.
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6
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Zhang R, Hou X, Wang C, Li J, Zhu J, Jiang Y, Hou F. The Endoplasmic Reticulum ATP13A1 is Essential for MAVS-Mediated Antiviral Innate Immunity. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203831. [PMID: 36216581 PMCID: PMC9685455 DOI: 10.1002/advs.202203831] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/07/2022] [Indexed: 06/16/2023]
Abstract
RIG-I-MAVS signaling pathway is essential for efficient innate immune response against virus infection. Though many components have been identified in RIG-I pathway and it can be partially reconstituted in vitro, detailed mechanisms involved in cells are still unclear. Here, a genome-wide CRISPR-Cas9 screen is performed using an engineered cell line IFNB-P2A-GSDMD-N, and ATP13A1, a putative dislocase located on the endoplasmic reticulum, is identified as an important regulator of RIG-I pathway. ATP13A1 deficiency abolishes RIG-I-mediated antiviral innate immune response due to compromised MAVS stability and crippled signaling potency of residual MAVS. Moreover, it is discovered that MAVS is subject to protease-mediated degradation in the absence of ATP13A1. As homozygous Atp13a1 knockout mice result in developmental retardation and embryonic lethality, Atp13a1 conditional knockout mice are generated. Myeloid-specific Atp13a1-deficient mice are viable and susceptible to RNA virus infection. Collectively, the findings reveal that ATP13A1 is indispensable for the stability and activation of MAVS and a proper antiviral innate immune response.
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Affiliation(s)
- Rui Zhang
- State Key Laboratory of Molecular BiologyShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China
| | - Xianteng Hou
- State Key Laboratory of Molecular BiologyShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China
| | - Changwan Wang
- State Key Laboratory of Molecular BiologyShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China
| | - Jiaxin Li
- State Key Laboratory of Molecular BiologyShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China
| | - Junyan Zhu
- State Key Laboratory of Molecular BiologyShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China
| | - Yingbo Jiang
- State Key Laboratory of Molecular BiologyShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China
| | - Fajian Hou
- State Key Laboratory of Molecular BiologyShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghai200031China
- Key Laboratory of Systems Health Science of Zhejiang ProvinceSchool of Life ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou310024China
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7
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Deng Y, Wang Y, Li L, Miao EA, Liu P. Post-Translational Modifications of Proteins in Cytosolic Nucleic Acid Sensing Signaling Pathways. Front Immunol 2022; 13:898724. [PMID: 35795661 PMCID: PMC9250978 DOI: 10.3389/fimmu.2022.898724] [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: 03/18/2022] [Accepted: 05/17/2022] [Indexed: 11/25/2022] Open
Abstract
The innate immune response is the first-line host defense against pathogens. Cytosolic nucleic acids, including both DNA and RNA, represent a special type of danger signal to initiate an innate immune response. Activation of cytosolic nucleic acid sensors is tightly controlled in order to achieve the high sensitivity needed to combat infection while simultaneously preventing false activation that leads to pathologic inflammatory diseases. In this review, we focus on post-translational modifications of key cytosolic nucleic acid sensors that can reversibly or irreversibly control these sensor functions. We will describe phosphorylation, ubiquitination, SUMOylation, neddylation, acetylation, methylation, succinylation, glutamylation, amidation, palmitoylation, and oxidation modifications events (including modified residues, modifying enzymes, and modification function). Together, these post-translational regulatory modifications on key cytosolic DNA/RNA sensing pathway members reveal a complicated yet elegantly controlled multilayer regulator network to govern innate immune activation.
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Affiliation(s)
- Yu Deng
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Ying Wang
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Lupeng Li
- Department of Immunology and Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, United States
- Department of Microbiology and Immunology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Edward A. Miao
- Department of Immunology and Department of Molecular Genetics and Microbiology, Duke University, Durham, NC, United States
| | - Pengda Liu
- Lineberger Comprehensive Cancer Center, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Biochemistry and Biophysics, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Curriculum in Genetics and Molecular Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- *Correspondence: Pengda Liu,
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8
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Liao Q, Ouyang G, Zhu J, Cai X, Yu G, Zhou Z, Liu X, Wang J, Xiao W. Zebrafish sirt7 Negatively Regulates Antiviral Responses by Attenuating Phosphorylation of irf3 and irf7 Independent of Its Enzymatic Activity. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:3050-3059. [PMID: 34799424 DOI: 10.4049/jimmunol.2100318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 10/11/2021] [Indexed: 12/27/2022]
Abstract
Sirt7 is one member of the sirtuin family proteins with NAD (NAD+)-dependent histone deacetylase activity. In this study, we report that zebrafish sirt7 is induced upon viral infection, and overexpression of sirt7 suppresses cellular antiviral responses. Disruption of sirt7 in zebrafish increases the survival rate upon spring viremia of carp virus infection. Further assays indicate that sirt7 interacts with irf3 and irf7 and attenuates phosphorylation of irf3 and irf7 by preventing tbk1 binding to irf3 and irf7. In addition, the enzymatic activity of sirt7 is not required for sirt7 to repress IFN-1 activation. To our knowledge, this study provides novel insights into sirt7 function and sheds new light on the regulation of irf3 and irf7 by attenuating phosphorylation.
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Affiliation(s)
- Qian Liao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
| | - Gang Ouyang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
| | - Junji Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
| | - Xiaolian Cai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
| | - Guangqing Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
| | - Ziwen Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
| | - Jing Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China; .,Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
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9
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Zhu J, Li X, Sun X, Zhou Z, Cai X, Liu X, Wang J, Xiao W. Zebrafish prmt2 Attenuates Antiviral Innate Immunity by Targeting traf6. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:2570-2580. [PMID: 34654690 DOI: 10.4049/jimmunol.2100627] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/16/2021] [Indexed: 12/23/2022]
Abstract
TNFR-associated factor 6 (TRAF6) not only recruits TBK1/IKKε to MAVS upon virus infection but also catalyzes K63-linked polyubiquitination on substrate or itself, which is critical for NEMO-dependent and -independent TBK1/IKKε activation, leading to the production of type I IFNs. The regulation at the TRAF6 level could affect the activation of antiviral innate immunity. In this study, we demonstrate that zebrafish prmt2, a type I arginine methyltransferase, attenuates traf6-mediated antiviral response. Prmt2 binds to the C terminus of traf6 to catalyze arginine asymmetric dimethylation of traf6 at arginine 100, preventing its K63-linked autoubiquitination, which results in the suppression of traf6 activation. In addition, it seems that the N terminus of prmt2 competes with mavs for traf6 binding and prevents the recruitment of tbk1/ikkε to mavs. By zebrafish model, we show that loss of prmt2 promotes the survival ratio of zebrafish larvae after challenge with spring viremia of carp virus. Therefore, we reveal, to our knowledge, a novel function of prmt2 in the negative regulation of antiviral innate immunity by targeting traf6.
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Affiliation(s)
- Junji Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xiong Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xueyi Sun
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Ziwen Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xiaolian Cai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, People's Republic of China.,The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and
| | - Jing Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, People's Republic of China.,The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China; .,University of Chinese Academy of Sciences, Beijing, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, People's Republic of China.,The Innovative Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and.,Hubei Hongshan Laboratory, Wuhan, People's Republic of China
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10
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Chathuranga K, Weerawardhana A, Dodantenna N, Lee JS. Regulation of antiviral innate immune signaling and viral evasion following viral genome sensing. Exp Mol Med 2021; 53:1647-1668. [PMID: 34782737 PMCID: PMC8592830 DOI: 10.1038/s12276-021-00691-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 06/15/2021] [Accepted: 09/07/2021] [Indexed: 02/07/2023] Open
Abstract
A harmonized balance between positive and negative regulation of pattern recognition receptor (PRR)-initiated immune responses is required to achieve the most favorable outcome for the host. This balance is crucial because it must not only ensure activation of the first line of defense against viral infection but also prevent inappropriate immune activation, which results in autoimmune diseases. Recent studies have shown how signal transduction pathways initiated by PRRs are positively and negatively regulated by diverse modulators to maintain host immune homeostasis. However, viruses have developed strategies to subvert the host antiviral response and establish infection. Viruses have evolved numerous genes encoding immunomodulatory proteins that antagonize the host immune system. This review focuses on the current state of knowledge regarding key host factors that regulate innate immune signaling molecules upon viral infection and discusses evidence showing how specific viral proteins counteract antiviral responses via immunomodulatory strategies.
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Affiliation(s)
- Kiramage Chathuranga
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, Korea
| | - Asela Weerawardhana
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, Korea
| | - Niranjan Dodantenna
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, Korea
| | - Jong-Soo Lee
- College of Veterinary Medicine, Chungnam National University, Daejeon, 34134, Korea.
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11
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Chen Y, Shi Y, Wu J, Qi N. MAVS: A Two-Sided CARD Mediating Antiviral Innate Immune Signaling and Regulating Immune Homeostasis. Front Microbiol 2021; 12:744348. [PMID: 34566944 PMCID: PMC8458965 DOI: 10.3389/fmicb.2021.744348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 08/11/2021] [Indexed: 12/12/2022] Open
Abstract
Mitochondrial antiviral signaling protein (MAVS) functions as a "switch" in the immune signal transduction against most RNA viruses. Upon viral infection, MAVS forms prion-like aggregates by receiving the cytosolic RNA sensor retinoic acid-inducible gene I-activated signaling and further activates/switches on the type I interferon signaling. While under resting state, MAVS is prevented from spontaneously aggregating to switch off the signal transduction and maintain immune homeostasis. Due to the dual role in antiviral signal transduction and immune homeostasis, MAVS has emerged as the central regulation target by both viruses and hosts. Recently, researchers show increasing interest in viral evasion strategies and immune homeostasis regulations targeting MAVS, especially focusing on the post-translational modifications of MAVS, such as ubiquitination and phosphorylation. This review summarizes the regulations of MAVS in antiviral innate immune signaling transduction and immune homeostasis maintenance.
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Affiliation(s)
- Yunqiang Chen
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Sciences, Institue of Engineering Biology and Health, Zhejiang University of Technology, Hangzhou, China
| | - Yuheng Shi
- Shanghai Key Laboratory of Medical Epigenetics, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Jing Wu
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Sciences, Institue of Engineering Biology and Health, Zhejiang University of Technology, Hangzhou, China
| | - Nan Qi
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, College of Pharmaceutical Sciences, Institue of Engineering Biology and Health, Zhejiang University of Technology, Hangzhou, China
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12
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Innate Immune Evasion of Porcine Epidemic Diarrhea Virus through Degradation of F-box and WD repeat domain-containing 7 protein via Ubiquitin-proteasome Pathway. J Virol 2021; 96:e0088921. [PMID: 34495699 DOI: 10.1128/jvi.00889-21] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) causes a porcine disease associated with swine epidemic diarrhea. Different antagonistic strategies have been identified, and the mechanism by which PEDV infection impairs the production of interferon (IFN) and delays the activation of the IFN response to escape host innate immunity has been determined, but the pathogenic mechanisms of PEDV infection remain enigmatic. Our preliminary results revealed that endogenous F-box and WD repeat domain-containing 7 (FBXW7), the substrate recognition component of the SCF-type E3 ubiquitin ligase, is downregulated in PEDV-infected Vero E6 cells, according to the results from an isobaric tags for relative and absolute quantification (iTRAQ) analysis. Overexpression of FBXW7 in target cells makes them more resistant to PEDV infection, whereas ablation of FBXW7 expression by small interfering RNA (siRNA) significantly promotes PEDV infection. In addition, FBXW7 was verified as an innate antiviral factor capable of enhancing the expression of RIG-I and TBK1, and it was found to induce interferon-stimulated genes (ISGs), which led to an elevated antiviral state of the host cells. Moreover, we revealed that PEDV nonstructural protein 2 (nsp2) interacts with FBXW7 and targets FBXW7 for degradation through the K48-linked ubiquitin-proteasome pathway. Consistent with the results proven in vitro, FBXW7 reduction was also confirmed in different intestinal tissues from PEDV-infected specific-pathogen-free (SPF) pigs. Taken together, the data indicated that PEDV has evolved with a distinct antagonistic strategy to circumvent the host antiviral response by targeting the ubiquitin-proteasome-mediated degradation of FBXW7. Our findings provide novel insights into PEDV infection and pathogenesis. IMPORTANCE To counteract the host antiviral defenses, most viruses, including coronaviruses, have evolved with diverse strategies to dampen host IFN-mediated antiviral response, wither by interfering with or evading specific host regulators at multiple steps of this response. In this study, a novel antagonistic strategy was revealed showing that PEDV infection could circumvent the host innate response by targeted degradation of endogenous FBXW7 in target cells, a process that was verified to be a positive modulator for the host innate immune system. Degradation of FBXW7 hampers host innate antiviral activation and facilitates PEDV replication. Our findings reveal a new mechanism exploited by PEDV to suppress the host antiviral response.
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13
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Chen X, Zhang H, Ou S, Chen H. Von Hippel-Lindau gene single nucleotide polymorphism (rs1642742) may be related to the occurrence and metastasis of HBV-related hepatocellular carcinoma. Medicine (Baltimore) 2021; 100:e27187. [PMID: 34477178 PMCID: PMC8415925 DOI: 10.1097/md.0000000000027187] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Accepted: 08/22/2021] [Indexed: 01/05/2023] Open
Abstract
It is well-known that microRNAs are able to regulate the expression of target mRNAs through complementary base-pairing to their 3'-untranslated regions (3'UTR) sequences. This study aimed to investigate whether single nucleotide polymorphisms resided in the 3'UTR sequences in patients with chronic hepatitis B viruses (HBV) infection are associated with the development and metastasis of hepatocellular carcinoma (HCC). Seventeen single nucleotide polymorphisms in the 3'UTR sequence of 10 genes regulated or affected by hepatitis B virus X protein were found by bioinformatics methods. Two hundred fifteen patients with HBV-related HCC and 216 patients with chronic HBV infection were recruited. Through case-control study, only found that the von Hippel-Lindau gene rs1642742 (G>A) may be associated with the occurrence and metastasis of HCC. The ORs of the frequencies of rs1642742 A allele versus G allele were 1.424 (P = .038, 95% confidence interval [CI] = 1.019-1.989) between HBV-related HCC and chronic HBV infection group and were 2.004 (P = .037, 95%CI = 1.031-3.895) between tumor metastasis and non-metastasis group, respectively. Through multivariate regression analysis, we also found that rs1642742 AA genotype was an independent risk factor for tumor metastasis (odds ratio = 2.227, 95% CI = 1.043-4.752, P = .038) in HBV-related HCC group. Our study suggested that Von Hippel-Lindau rs1642742 contributed to susceptibility to developing HCC and correlated with tumor metastasis.
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14
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Zhou Z, Cai X, Zhu J, Li Z, Yu G, Liu X, Ouyang G, Xiao W. Zebrafish otud6b Negatively Regulates Antiviral Responses by Suppressing K63-Linked Ubiquitination of irf3 and irf7. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2021; 207:244-256. [PMID: 34183367 DOI: 10.4049/jimmunol.2000891] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 04/04/2021] [Indexed: 12/15/2022]
Abstract
Ovarian tumor domain-containing 6B (OTUD6B) belongs to the OTU deubiquitylating enzyme family. In this study, we report that zebrafish otud6b is induced upon viral infection, and overexpression of otud6b suppresses cellular antiviral response. Disruption of otud6b in zebrafish increases the survival rate upon spring viremia of carp virus and grass carp reovirus exposure. Further assays indicate that otud6b interacts with irf3 and irf7 and diminishes traf6-mediated K63-linked polyubiquitination of irf3 and irf7. In addition, the OTU domain is required for otud6b to repress IFN-1 activation and K63-linked polyubiquitination of irf3 and irf7. Moreover, otud6b also attenuates tbk1 to bind to irf3 and irf7, resulting in the impairment of irf3 and irf7 phosphorylation. This study provides, to our knowledge, novel insights into otud6b function and sheds new lights on the regulation of irf3 and irf7 by deubiquitination in IFN-1 signaling.
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Affiliation(s)
- Ziwen Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xiaolian Cai
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Junji Zhu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Zhi Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Guangqing Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and
| | - Gang Ouyang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China; .,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, People's Republic of China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, People's Republic of China; and.,University of Chinese Academy of Sciences, Beijing, People's Republic of China
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15
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Chang MX. The negative regulation of retinoic acid-inducible gene I (RIG-I)-like receptors (RLRs) signaling pathway in fish. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 119:104038. [PMID: 33548290 DOI: 10.1016/j.dci.2021.104038] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 01/30/2021] [Accepted: 01/30/2021] [Indexed: 06/12/2023]
Abstract
At each stage of innate immune response, there are stimulatory and inhibitory signals that modulate the strength and character of the response. RIG-I-like receptor (RLR) signaling pathway plays pivotal roles in antiviral innate immune response. Recent studies have revealed the molecular mechanisms that viral infection leads to the activation of RLRs-mediated downstream signaling cascades and the production of type I interferons (IFNs). However, antiviral immune responses must be tightly regulated in order to prevent detrimental type I IFNs production. Previous reviews have highlighted negative regulation of RLR signaling pathway, which mainly target to directly regulate RIG-I, MDA5, MAVS and TBK1 function in mammals. In this review, we summarize recent advances in our understanding of negative regulators of RLR signaling pathway in teleost, with specific focus on piscine and viral regulatory mechanisms that directly or indirectly inhibit the function of RIG-I, MDA5, LGP2, MAVS, TRAF3, TBK1, IRF3 and IRF7 both in the steady state or upon viral infection. We also further discuss important directions for future studies, especially for non-coding RNAs and post-translational modifications via fish specific TRIM proteins. The knowledge of negative regulators of RLR signaling pathway in teleost will shed new light on the critical information for potential therapeutic purposes.
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Affiliation(s)
- Ming Xian Chang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Key Laboratory of Aquaculture Disease Control, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, 430072, China; Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China.
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16
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Lu LF, Zhang C, Li ZC, Zhou XY, Jiang JY, Chen DD, Zhang YA, Xiong F, Zhou F, Li S. A novel role of Zebrafish TMEM33 in negative regulation of interferon production by two distinct mechanisms. PLoS Pathog 2021; 17:e1009317. [PMID: 33600488 PMCID: PMC7891750 DOI: 10.1371/journal.ppat.1009317] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 01/14/2021] [Indexed: 01/17/2023] Open
Abstract
The transmembrane protein 33 (TMEM33) was originally identified as an endoplasmic reticulum (ER) protein that influences the tubular structure of the ER and modulates intracellular calcium homeostasis. However, the role of TMEM33 in antiviral immunity in vertebrates has not been elucidated. In this article, we demonstrate that zebrafish TMEM33 is a negative regulator of virus-triggered interferon (IFN) induction via two mechanisms: mitochondrial antiviral signaling protein (MAVS) ubiquitination and a decrease in the kinase activity of TANK binding kinase 1 (TBK1). Upon stimulation with viral components, tmem33 was remarkably upregulated in the zebrafish liver cell line. The IFNφ1 promoter (IFNφ1pro) activity and mRNA level induced by retinoic acid-inducible gene (RIG)-I-like receptors (RLRs) were significantly inhibited by TMEM33. Knockdown of TMEM33 increased host ifn transcription. Subsequently, we found that TMEM33 was colocalized in the ER and interacted with the RLR cascades, whereas MAVS was degraded by TMEM33 during the K48-linked ubiquitination. On the other hand, TMEM33 reduced the phosphorylation of mediator of IFN regulatory factor 3 (IRF3) activation (MITA)/IRF3 by acting as a decoy substrate of TBK1, which was also phosphorylated. A functional domain assay revealed that the N-terminal transmembrane domain 1 (TM1) and TM2 regions of TMEM33 were necessary for IFN suppression. Finally, TMEM33 significantly attenuated the host cellular antiviral capacity by blocking the IFN response. Taken together, our findings provide insight into the different mechanisms employed by TMEM33 in cellular IFN-mediated antiviral process.
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Affiliation(s)
- Long-Feng Lu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Can Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zhuo-Cong Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xiao-Yu Zhou
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,College of Fisheries and Life Science, Dalian Ocean University, Dalian, China
| | - Jing-Yu Jiang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Dan-Dan Chen
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,State Key Laboratory of Agricultural Microbiology, College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Feng Xiong
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Fang Zhou
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Shun Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
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17
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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: 30] [Impact Index Per Article: 10.0] [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.
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18
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Zhang ZD, Xiong TC, Yao SQ, Wei MC, Chen M, Lin D, Zhong B. RNF115 plays dual roles in innate antiviral responses by catalyzing distinct ubiquitination of MAVS and MITA. Nat Commun 2020; 11:5536. [PMID: 33139700 PMCID: PMC7606512 DOI: 10.1038/s41467-020-19318-3] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 10/07/2020] [Indexed: 02/07/2023] Open
Abstract
MAVS and MITA are essential adaptor proteins mediating innate antiviral immune responses against RNA and DNA viruses, respectively. Here we show that RNF115 plays dual roles in response to RNA or DNA virus infections by catalyzing distinct types of ubiquitination of MAVS and MITA at different phases of viral infection. RNF115 constitutively interacts with and induces K48-linked ubiquitination and proteasomal degradation of homeostatic MAVS in uninfected cells, whereas associates with and catalyzes K63-linked ubiquitination of MITA after HSV-1 infection. Consistently, the protein levels of MAVS are substantially increased in Rnf115−/− organs or cells without viral infection, and HSV-1-induced aggregation of MITA is impaired in Rnf115−/− cells compared to the wild-type counterparts. Consequently, the Rnf115−/− mice exhibit hypo- and hyper-sensitivity to EMCV and HSV-1 infection, respectively. These findings highlight dual regulation of cellular antiviral responses by RNF115-mediated ubiquitination of MAVS and MITA and contribute to our understanding of innate immune signaling. MAVS and MITA are adapter proteins that play distinct roles in the context of the host response to RNA and DNA viruses, respectively. Here the authors implicate RNF115 in dual temporal and spatial mechanisms of interacting and catalyzing distinct ubiquitination of MAVS and MITA to modulate RNA and DNA antiviral immune responses.
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Affiliation(s)
- Zhi-Dong Zhang
- Department of Virology, College of Life Sciences, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China.,Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China.,Department of Immunology, Medical Research Institute and Frontier Science Center for Immunology and Metabolism, Wuhan University, 430072, Wuhan, China
| | - Tian-Chen Xiong
- Department of Virology, College of Life Sciences, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China.,Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China.,Department of Immunology, Medical Research Institute and Frontier Science Center for Immunology and Metabolism, Wuhan University, 430072, Wuhan, China
| | - Shu-Qi Yao
- Department of Virology, College of Life Sciences, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China.,Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China.,Department of Immunology, Medical Research Institute and Frontier Science Center for Immunology and Metabolism, Wuhan University, 430072, Wuhan, China
| | - Ming-Cong Wei
- Department of Virology, College of Life Sciences, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China.,Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China.,Department of Immunology, Medical Research Institute and Frontier Science Center for Immunology and Metabolism, Wuhan University, 430072, Wuhan, China
| | - Ming Chen
- Department of Blood Transfusion, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China
| | - Dandan Lin
- Cancer Center, Renmin Hospital of Wuhan University, 430060, Wuhan, China
| | - Bo Zhong
- Department of Virology, College of Life Sciences, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China. .,Department of Gastrointestinal Surgery, Zhongnan Hospital of Wuhan University, 430071, Wuhan, China. .,Department of Immunology, Medical Research Institute and Frontier Science Center for Immunology and Metabolism, Wuhan University, 430072, Wuhan, China.
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19
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Fan S, Wang J, Yu G, Rong F, Zhang D, Xu C, Du J, Li Z, Ouyang G, Xiao W. TET is targeted for proteasomal degradation by the PHD-pVHL pathway to reduce DNA hydroxymethylation. J Biol Chem 2020; 295:16299-16313. [PMID: 32963106 DOI: 10.1074/jbc.ra120.014538] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 09/19/2020] [Indexed: 12/22/2022] Open
Abstract
Hypoxia-inducible factors are heterodimeric transcription factors that play a crucial role in a cell's ability to adapt to low oxygen. The von Hippel-Lindau tumor suppressor (pVHL) acts as a master regulator of HIF activity, and its targeting of prolyl hydroxylated HIF-α for proteasomal degradation under normoxia is thought to be a major mechanism for pVHL tumor suppression and cellular response to oxygen. Whether pVHL regulates other targets through a similar mechanism is largely unknown. Here, we identify TET2/3 as novel targets of pVHL. pVHL induces proteasomal degradation of TET2/3, resulting in reduced global 5-hydroxymethylcytosine levels. Conserved proline residues within the LAP/LAP-like motifs of these two proteins are hydroxylated by the prolyl hydroxylase enzymes (PHD2/EGLN1 and PHD3/EGLN3), which is prerequisite for pVHL-mediated degradation. Using zebrafish as a model, we determined that global 5-hydroxymethylcytosine levels are enhanced in vhl-null, egln1a/b-double-null, and egln3-null embryos. Therefore, we reveal a novel function for the PHD-pVHL pathway in regulating TET protein stability and activity. These data extend our understanding of how TET proteins are regulated and provide new insight into the mechanisms of pVHL in tumor suppression.
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Affiliation(s)
- Sijia Fan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Jing Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China; Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, China
| | - Guangqing Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Fangjing Rong
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Dawei Zhang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Chenxi Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Juan Du
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Zhi Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China
| | - Gang Ouyang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China; Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, China
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China; Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China; Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, China.
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20
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An IMiD-induced SALL4 degron system for selective degradation of target proteins. Commun Biol 2020; 3:515. [PMID: 32948804 PMCID: PMC7501283 DOI: 10.1038/s42003-020-01240-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 07/31/2020] [Indexed: 12/20/2022] Open
Abstract
Regulating the amount of proteins in living cells is a powerful approach for understanding the functions of the proteins. Immunomodulatory drugs (IMiDs) induce the degradation of neosubstrates by interacting with celebron (CRBN) in the cullin E3 ubiquitin ligase complex (CRL4CRBN). Here, we developed the IMiD-dependent Sal-like protein 4 (SALL4) degron (S4D) system for chemical protein knockdown. In transient assays, an N- or C-terminal S4D tag induced the degradation of proteins localized to various subcellular compartments, including the plasma membrane. The activity of luciferase-S4D was reduced by 90% within 3 h of IMiD treatment. IMiD treatment reduced the expression of endogenous S4D-fused RelA and IκBα in knock-in (KI) experiments. Interestingly, the IκBα knockdown suggested that there may be another, unknown mechanism for RelA translocation to the nucleus. Furthermore, 5-hydroxythalidomide as a thalidomide metabolite specifically degradated S4D-tagged protein. These results indicate that the S4D system is a useful tool for cellular biology.
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21
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Lu LF, Zhang C, Zhou XY, Li ZC, Chen DD, Zhou Y, Zhou F, Zhang YA, Li S. Zebrafish RBM47 Promotes Lysosome-Dependent Degradation of MAVS to Inhibit IFN Induction. THE JOURNAL OF IMMUNOLOGY 2020; 205:1819-1829. [PMID: 32859727 DOI: 10.4049/jimmunol.1901387] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 08/03/2020] [Indexed: 12/20/2022]
Abstract
IFN is essential for hosts to defend against viral invasion, whereas it must be tightly regulated to prevent hyperimmune responses. Fish mitochondrial antiviral signaling protein (MAVS) is a vital factor for IFN production, but until now, there have been few studies on the regulation mechanisms of fish MAVS enabling IFN to be properly controlled. In this study, we show that zebrafish RNA-binding motif protein 47 (RBM47) promotes MAVS degradation in a lysosome-dependent manner to suppress IFN production. First, the transcription of IFN activated by polyinosinic/polycytidylic acid (poly I:C), spring viremia of carp virus, or retinoic acid-inducible gene I (RIG-I)-like receptor pathway components were significantly suppressed by RBM47. Second, RBM47 interacted with MAVS and promoted lysosome-dependent degradation of MAVS, changing the cellular location of MAVS from the cytoplasm to the lysosome region. Finally, RBM47 inhibited downstream MITA and IRF3/7 activation, impairing the host antiviral response. Collectively, these data suggest that zebrafish RBM47 negatively regulates IFN production by promoting lysosome-dependent degradation of MAVS, providing insights into the role of RBM47 in the innate antiviral immune response in fish.
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Affiliation(s)
- Long-Feng Lu
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.,College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Can Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiao-Yu Zhou
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.,Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430070, China; and
| | - Zhuo-Cong Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dan-Dan Chen
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.,College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
| | - Yu Zhou
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fang Zhou
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Yong-An Zhang
- State Key Laboratory of Agricultural Microbiology, College of Fisheries, Huazhong Agricultural University, Wuhan 430070, China
| | - Shun Li
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; .,College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, China
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22
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Li Z, Fan S, Wang J, Chen X, Liao Q, Liu X, Ouyang G, Cao H, Xiao W. Zebrafish F-box Protein fbxo3 Negatively Regulates Antiviral Response through Promoting K27-Linked Polyubiquitination of the Transcription Factors irf3 and irf7. THE JOURNAL OF IMMUNOLOGY 2020; 205:1897-1908. [DOI: 10.4049/jimmunol.2000305] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 07/29/2020] [Indexed: 12/23/2022]
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23
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Yu G, Li X, Zhou Z, Tang J, Wang J, Liu X, Fan S, Ouyang G, Xiao W. Zebrafish phd3 Negatively Regulates Antiviral Responses via Suppression of Irf7 Transactivity Independent of Its Prolyl Hydroxylase Activity. THE JOURNAL OF IMMUNOLOGY 2020; 205:1135-1146. [PMID: 32669312 DOI: 10.4049/jimmunol.1900902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 06/14/2020] [Indexed: 12/30/2022]
Abstract
Prolyl hydroxylase domain (PHD)-containing enzyme 3 belongs to the Caenorhabditis elegans gene egl-9 family of prolyl hydroxylases, which has initially been revealed to hydroxylate hypoxia-inducible factor α (HIF-α) and mediate HIF-α degradation. In addition to modulating its target function by hydroxylation, PHD3 has been also shown to influence its binding partners' function independent of its prolyl hydroxylase activity. In this study, we report that overexpression of zebrafish phd3 suppresses cellular antiviral response. Moreover, disruption of phd3 in zebrafish increases the survival rate upon spring viremia of carp virus exposure. Further assays indicate that phd3 interacts with irf7 through the C-terminal IRF association domain of irf7 and diminishes K63-linked ubiquitination of irf7. However, the enzymatic activity of phd3 is not required for phd3 to inhibit irf7 transactivity. This study provides novel insights into phd3 function and sheds new light on the regulation of irf7 in retinoic acid-inducible gene I-like receptor signaling.
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Affiliation(s)
- Guangqing Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xiong Li
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ziwen Zhou
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jinhua Tang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jing Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Sijia Fan
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Gang Ouyang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan 430072, People's Republic of China; The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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24
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Minervini G, Pennuto M, Tosatto SCE. The pVHL neglected functions, a tale of hypoxia-dependent and -independent regulations in cancer. Open Biol 2020; 10:200109. [PMID: 32603638 PMCID: PMC7574549 DOI: 10.1098/rsob.200109] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The von Hippel–Lindau protein (pVHL) is a tumour suppressor mainly known for its role as master regulator of hypoxia-inducible factor (HIF) activity. Functional inactivation of pVHL is causative of the von Hippel–Lindau disease, an inherited predisposition to develop different cancers. Due to its impact on human health, pVHL has been widely studied in the last few decades. However, investigations mostly focus on its role in degrading HIFs, whereas alternative pVHL protein–protein interactions and functions are insistently surfacing in the literature. In this review, we analyse these almost neglected functions by dissecting specific conditions in which pVHL is proposed to have differential roles in promoting cancer. We reviewed its role in regulating phosphorylation as a number of works suggest pVHL to act as an inhibitor by either degrading or promoting downregulation of specific kinases. Further, we summarize hypoxia-dependent and -independent pVHL interactions with multiple protein partners and discuss their implications in tumorigenesis.
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Affiliation(s)
- Giovanni Minervini
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy
| | - Maria Pennuto
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy.,Veneto Institute of Molecular Medicine, Via Orus 2, 35129 Padova, Italy
| | - Silvio C E Tosatto
- Department of Biomedical Sciences, University of Padova, Viale G. Colombo 3, 35121 Padova, Italy
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25
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Porcine Epidemic Diarrhea Virus nsp15 Antagonizes Interferon Signaling by RNA Degradation of TBK1 and IRF3. Viruses 2020; 12:v12060599. [PMID: 32486349 PMCID: PMC7354440 DOI: 10.3390/v12060599] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/19/2020] [Accepted: 05/28/2020] [Indexed: 12/18/2022] Open
Abstract
Porcine epidemic diarrhea virus (PEDV) causes a porcine disease associated with swine epidemic diarrhea. The type I interferon (IFN-I or IFN α/β) is a key mediator of innate antiviral response during virus infection. Different antagonistic strategies have been identified and determined as to how PEDV infection inhibits the host's IFN responses to escape the host innate immune pathway, but the pathogenic mechanisms of PEDV infection are not fully elucidated. Our preliminary results revealed that endogenous TANK-binding kinase 1 (TBK1) and interferon regulatory factor 3 (IRF3), the key components in the IFN signaling pathway were downregulated in PEDV infected IPEC-J2 cells by iTRAQ analysis. In this study, we screened nsp15 as the most important viral encoded protein involved in TBK1 and IRF3 reduction. Endoribonuclease (EndoU) activity has been well determined for coronavirus nsp15. Three residues (H226, H241, and K282) of PEDV nsp15 were identified as critical amino acids for PEDV EndoU but not D265, which was not well correlated with published results of other coronaviruses, such as severe acute respiratory syndrome virus (SARS-CoV). Moreover, PEDV nsp15 can directly degrade the RNA levels of TBK1 and IRF3 dependent on its EndoU activity to suppress IFN production and constrain the induction of IFN stimulated genes (ISGs), by which PEDV antagonizes the host innate response to facilitate its replication. Collectively, these results have confirmed that PEDV nsp15 was capable of subverting the IFN response by the RNA degradation of TBK1 and IRF3.
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26
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Xiao Y, Evseev D, Stevens CA, Moghrabi A, Miranzo-Navarro D, Fleming-Canepa X, Tetrault DG, Magor KE. Influenza PB1-F2 Inhibits Avian MAVS Signaling. Viruses 2020; 12:v12040409. [PMID: 32272772 PMCID: PMC7232376 DOI: 10.3390/v12040409] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 12/27/2022] Open
Abstract
RIG-I plays an essential role in the duck innate immune response to influenza infection. RIG-I engages the critical adaptor protein mitochondrial antiviral signaling (MAVS) to activate the downstream signaling pathway. The influenza A virus non-structural protein PB1-F2 interacts with MAVS in human cells to inhibit interferon production. As duck and human MAVS share only 28% amino acid similarity, it is not known whether the influenza virus can similarly inhibit MAVS signaling in avian cells. Using confocal microscopy we show that MAVS and the constitutively active N-terminal end of duck RIG-I (2CARD) co-localize in DF-1 cells, and duck MAVS is pulled down with GST-2CARD. We establish that either GST-2CARD, or duck MAVS can initiate innate signaling in chicken cells and their co-transfection augments interferon-beta promoter activity. Demonstrating the limits of cross-species interactions, duck RIG-I 2CARD initiates MAVS signaling in chicken cells, but works poorly in human cells. The D122A mutation of human 2CARD abrogates signaling by affecting MAVS engagement, and the reciprocal A120D mutation in duck 2CARD improves signaling in human cells. We show mitochondrial localization of PB1-F2 from influenza A virus strain A/Puerto Rico/8/1934 (H1N1; PR8), and its co-localization and co-immunoprecipitation with duck MAVS. PB1-F2 inhibits interferon-beta promoter activity induced by overexpression of either duck RIG-I 2CARD, full-length duck RIG-I, or duck MAVS. Finally, we show that the effect of PB1-F2 on mitochondria abrogates TRIM25-mediated ubiquitination of RIG-I CARD in both human and avian cells, while an NS1 variant from the PR8 influenza virus strain does not.
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Affiliation(s)
- Yanna Xiao
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB T6G 2R3, Canada;
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; (D.E.); (C.A.S.); (A.M.); (D.M.-N.); (X.F.-C.); (D.G.T.)
| | - Danyel Evseev
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; (D.E.); (C.A.S.); (A.M.); (D.M.-N.); (X.F.-C.); (D.G.T.)
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Chase A. Stevens
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; (D.E.); (C.A.S.); (A.M.); (D.M.-N.); (X.F.-C.); (D.G.T.)
| | - Adam Moghrabi
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; (D.E.); (C.A.S.); (A.M.); (D.M.-N.); (X.F.-C.); (D.G.T.)
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Domingo Miranzo-Navarro
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; (D.E.); (C.A.S.); (A.M.); (D.M.-N.); (X.F.-C.); (D.G.T.)
| | - Ximena Fleming-Canepa
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; (D.E.); (C.A.S.); (A.M.); (D.M.-N.); (X.F.-C.); (D.G.T.)
| | - David G. Tetrault
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; (D.E.); (C.A.S.); (A.M.); (D.M.-N.); (X.F.-C.); (D.G.T.)
| | - Katharine E. Magor
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2R3, Canada; (D.E.); (C.A.S.); (A.M.); (D.M.-N.); (X.F.-C.); (D.G.T.)
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB T6G 2R3, Canada
- Correspondence: ; Tel.: +1-780-492-5498
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27
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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.
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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
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28
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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: 180] [Impact Index Per Article: 45.0] [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.
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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.
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29
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He X, Zhu Y, Zhang Y, Geng Y, Gong J, Geng J, Zhang P, Zhang X, Liu N, Peng Y, Wang C, Wang Y, Liu X, Wan L, Gong F, Wei C, Zhong H. RNF34 functions in immunity and selective mitophagy by targeting MAVS for autophagic degradation. EMBO J 2019; 38:e100978. [PMID: 31304625 PMCID: PMC6627233 DOI: 10.15252/embj.2018100978] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 05/06/2019] [Accepted: 05/13/2019] [Indexed: 12/13/2022] Open
Abstract
Viral infection triggers the formation of mitochondrial antiviral signaling protein (MAVS) aggregates, which potently promote immune signaling. Autophagy plays an important role in controlling MAVS-mediated antiviral signaling; however, the exact molecular mechanism underlying the targeted autophagic degradation of MAVS remains unclear. Here, we investigated the mechanism by which RNF34 regulates immunity and mitophagy by targeting MAVS. RNF34 binds to MAVS in the mitochondrial compartment after viral infection and negatively regulates RIG-I-like receptor (RLR)-mediated antiviral immunity. Moreover, RNF34 catalyzes the K27-/K29-linked ubiquitination of MAVS at Lys 297, 311, 348, and 362 Arg, which serves as a recognition signal for NDP52-dependent autophagic degradation. Specifically, RNF34 initiates the K63- to K27-linked ubiquitination transition on MAVS primarily at Lys 311, which facilitates the autophagic degradation of MAVS upon RIG-I stimulation. Notably, RNF34 is required for the clearance of damaged mitochondria upon viral infection. Thus, we elucidated the mechanism by which RNF34-mediated autophagic degradation of MAVS regulates the innate immune response, mitochondrial homeostasis, and infection.
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Affiliation(s)
- Xiang He
- Beijing Institute of BiotechnologyBeijingChina
| | - Yongjie Zhu
- Beijing Institute of BiotechnologyBeijingChina
| | | | - Yunqi Geng
- Beijing Institute of BiotechnologyBeijingChina
- Institute of Physical Science and Information TechnologyAnhui UniversityHefeiChina
| | - Jing Gong
- Beijing Institute of BiotechnologyBeijingChina
- Institute of Physical Science and Information TechnologyAnhui UniversityHefeiChina
| | - Jin Geng
- Beijing Institute of BiotechnologyBeijingChina
- Institute of Physical Science and Information TechnologyAnhui UniversityHefeiChina
| | | | | | - Ning Liu
- Beijing Institute of BiotechnologyBeijingChina
| | - Yumeng Peng
- Beijing Institute of BiotechnologyBeijingChina
| | | | - Yujie Wang
- Beijing Institute of BiotechnologyBeijingChina
- Institute of Physical Science and Information TechnologyAnhui UniversityHefeiChina
| | - Xin Liu
- Beijing Institute of BiotechnologyBeijingChina
| | - Luming Wan
- Stem Cell and Regenerative Medicine LabInstitute of Health Service and Transfusion MedicineAcademy of Military Medical SciencesBeijingChina
| | - Feng Gong
- Stem Cell and Regenerative Medicine LabInstitute of Health Service and Transfusion MedicineAcademy of Military Medical SciencesBeijingChina
| | - Congwen Wei
- Beijing Institute of BiotechnologyBeijingChina
| | - Hui Zhong
- Beijing Institute of BiotechnologyBeijingChina
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30
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Yu G, Liu X, Tang J, Xu C, Ouyang G, Xiao W. Neddylation Facilitates the Antiviral Response in Zebrafish. Front Immunol 2019; 10:1432. [PMID: 31293590 PMCID: PMC6603152 DOI: 10.3389/fimmu.2019.01432] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/06/2019] [Indexed: 12/26/2022] Open
Abstract
Neddylation is a type of post-translational protein modifications, in which neural precursor cell expressed developmentally downregulated protein 8 (NEDD8) is covalently conjugated to the lysine residues of target substrates. The best characterized principal substrates of neddylation are the cullin-RING ligases (CRLs). In addition, neddylation also modifies non-cullin proteins to affect gene regulation, cell survival, organ development, and stress response. However, the role of neddylation in antiviral innate immunity remain largely unknown. Here, we found that when neddylation was blocked by the NEDD8 activating enzyme E1 (NAE) inhibitor, MLN4924, the cellular and organismal antiviral response was suppressed. Moreover, the disruption of nedd8 increased the sensitivity of zebrafish to SVCV infection. Further assays indicated that blocking or silencing neddylation significantly downregulated key antiviral genes after poly (I:C) stimulation or SVCV infection, but dramatically increased SVCV replication. Neddylation of Irf3 and Irf7 was readily detected, but not of Mda5, Mavs, and Tbk1. Thus, our results not only demonstrated that neddylation facilitated the antiviral response in vitro and in vivo, but also revealed a novel role of nedd8 in antiviral innate immunity.
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Affiliation(s)
- Guangqing Yu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xing Liu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Jinhua Tang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Chenxi Xu
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Gang Ouyang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Wuhan Xiao
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,The Key Laboratory of Aquaculture Disease Control, Ministry of Agriculture, Wuhan, China.,The Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China.,The Innovation Academy of Seed Design, Chinese Academy of Sciences, Wuhan, China
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31
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Zhang J, Zhang Q. VHL and Hypoxia Signaling: Beyond HIF in Cancer. Biomedicines 2018; 6:biomedicines6010035. [PMID: 29562667 PMCID: PMC5874692 DOI: 10.3390/biomedicines6010035] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 03/12/2018] [Accepted: 03/16/2018] [Indexed: 12/12/2022] Open
Abstract
Von Hippel-Lindau (VHL) is an important tumor suppressor that is lost in the majority of clear cell carcinoma of renal cancer (ccRCC). Its regulatory pathway involves the activity of E3 ligase, which targets hypoxia inducible factor α (including HIF1α and HIF2α) for proteasome degradation. In recent years, emerging literature suggests that VHL also possesses other HIF-independent functions. This review will focus on VHL-mediated signaling pathways involving the latest identified substrates/binding partners, including N-Myc downstream-regulated gene 3 (NDRG3), AKT, and G9a, etc., and their physiological roles in hypoxia signaling and cancer. We will also discuss the crosstalk between VHL and NF-κB signaling. Lastly, we will review the latest findings on targeting VHL signaling in cancer.
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Affiliation(s)
- Jing Zhang
- Department of Pathology and Laboratory Medicine, Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC 27599, USA.
| | - Qing Zhang
- Department of Pathology and Laboratory Medicine, Lineberger Comprehensive Cancer Center, UNC-Chapel Hill, Chapel Hill, NC 27599, USA.
- Department of Pharmacology, UNC-Chapel Hill, Chapel Hill, NC 27599, USA.
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32
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Regulation of MAVS activation through post-translational modifications. Curr Opin Immunol 2018; 50:75-81. [DOI: 10.1016/j.coi.2017.12.002] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/08/2017] [Accepted: 12/01/2017] [Indexed: 12/19/2022]
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33
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Taylor CT, Colgan SP. Regulation of immunity and inflammation by hypoxia in immunological niches. Nat Rev Immunol 2017; 17:774-785. [PMID: 28972206 PMCID: PMC5799081 DOI: 10.1038/nri.2017.103] [Citation(s) in RCA: 398] [Impact Index Per Article: 56.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Immunological niches are focal sites of immune activity that can have varying microenvironmental features. Hypoxia is a feature of physiological and pathological immunological niches. The impact of hypoxia on immunity and inflammation can vary depending on the microenvironment and immune processes occurring in a given niche. In physiological immunological niches, such as the bone marrow, lymphoid tissue, placenta and intestinal mucosa, physiological hypoxia controls innate and adaptive immunity by modulating immune cell proliferation, development and effector function, largely via transcriptional changes driven by hypoxia-inducible factor (HIF). By contrast, in pathological immunological niches, such as tumours and chronically inflamed, infected or ischaemic tissues, pathological hypoxia can drive tissue dysfunction and disease development through immune cell dysregulation. Here, we differentiate between the effects of physiological and pathological hypoxia on immune cells and the consequences for immunity and inflammation in different immunological niches. Furthermore, we discuss the possibility of targeting hypoxia-sensitive pathways in immune cells for the treatment of inflammatory disease.
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Affiliation(s)
- Cormac T Taylor
- UCD Conway Institute, Systems Biology Ireland and the School of Medicine, University College Dublin, Belfield, Dublin 4, Ireland
| | - Sean P Colgan
- Department of Medicine and the Mucosal Inflammation Program, University of Colorado School of Medicine, Aurora, 80045 Colorado, USA
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Liu JX, Xu QH, Li S, Yu X, Liu W, Ouyang G, Zhang T, Chen LL. Transcriptional factors Eaf1/2 inhibit endoderm and mesoderm formation via suppressing TGF-β signaling. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2017; 1860:1103-1116. [DOI: 10.1016/j.bbagrm.2017.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 09/02/2017] [Accepted: 09/03/2017] [Indexed: 01/11/2023]
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Coexpression Analysis of Transcriptome on AIDS and Other Human Disease Pathways by Canonical Correlation Analysis. Int J Genomics 2017; 2017:9163719. [PMID: 28695125 PMCID: PMC5488239 DOI: 10.1155/2017/9163719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 02/24/2017] [Accepted: 03/08/2017] [Indexed: 11/17/2022] Open
Abstract
Acquired immune deficiency syndrome is a severe disease in humans caused by human immunodeficiency virus. Several human genes were characterized as host genetic factors that impact the processes of AIDS disease. Recent studies on AIDS patients revealed a series disease is complicating with AIDS. To resolve gene interaction between AIDS and complicating diseases, a canonical correlation analysis was used to identify the global correlation between AIDS and other disease pathway genes expression. The results showed that HLA-B, HLA-A, MH9, ZNED1, IRF1, TLR8, TSG101, NCOR2, and GML are the key AIDS-restricted genes highly correlated with other disease pathway genes. Furthermore, pathway genes in several diseases such as asthma, autoimmune thyroid disease, and malaria were globally correlated with ARGs. It suggests that these diseases are a high risk in AIDS patients as complicating diseases.
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36
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Chen SN, Zou PF, Nie P. Retinoic acid-inducible gene I (RIG-I)-like receptors (RLRs) in fish: current knowledge and future perspectives. Immunology 2017; 151:16-25. [PMID: 28109007 DOI: 10.1111/imm.12714] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 12/20/2016] [Accepted: 01/12/2017] [Indexed: 12/24/2022] Open
Abstract
Retinoic acid-inducible gene I (RIG-I) -like receptors (RLRs) are found conservatively present in teleost fish. All three members, RIG-I, MDA5 and LGP2, together with the downstream molecules such as MITA, TRAF3 and TBK1, have been identified in a range of fish species. However, it is unexpected that RIG-I has not been reported in fish of Acanthopterygii, and it would be important to clarify the presence and role of the RIG-I gene in a broad range of taxa in Teleostei. RLRs in fish can be induced in vivo and in vitro by viral pathogens as well as synthetic dsRNA, poly(I:C), leading to the production of type I interferons (IFNs) and the expression of IFN-stimulated genes (ISGs). Bacterial pathogens, such as Edwardsiella tarda, and their components, such as lipopolysaccharide are also found to induce the expression of RLRs, and whether such induction was mediated through the direct recognition by RLRs or through crosstalk with other pattern recognition receptors recognizing directly bacterial pathogen-associated molecular patterns awaits to be investigated. On the other hand, RLR-activated type I IFN production can be negatively regulated in fish by molecules, such as TBK-1-like protein and IRF10, which are found to negatively regulate RIG-I and MAVS-activated type I IFN production, and to block MITA or bind ISRE motifs, respectively. It is considered that the evolutionary occurrence of RLRs in fish, and their recognized ligands, especially those from their fish pathogens, as well as the mechanisms involved in the RLR signalling pathways, are of significant interest for further investigation.
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Affiliation(s)
- Shan Nan Chen
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
| | - Peng Fei Zou
- College of Fisheries, Jimei University, Xiamen, Fujian, China
| | - Pin Nie
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei, China
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37
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Hu MM, Shu HB. Multifaceted roles of TRIM38 in innate immune and inflammatory responses. Cell Mol Immunol 2017; 14:331-338. [PMID: 28194022 DOI: 10.1038/cmi.2016.66] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/10/2016] [Accepted: 11/10/2016] [Indexed: 12/11/2022] Open
Abstract
The tripartite motif-containing (TRIM) proteins represent the largest E3 ubiquitin ligase family. The multifaceted roles of TRIM38 in innate immunity and inflammation have been intensively investigated in recent years. TRIM38 is essential for cytosolic RNA or DNA sensor-mediated innate immune responses to both RNA and DNA viruses, while negatively regulating TLR3/4- and TNF/IL-1β-triggered inflammatory responses. In these processes, TRIM38 acts as an E3 ubiquitin or SUMO ligase, which targets key cellular signaling components, or as an enzymatic activity-independent regulator. This review summarizes recent advances that highlight the critical roles of TRIM38 in the regulation of proper innate immune and inflammatory responses.
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Affiliation(s)
- Ming-Ming Hu
- Medical Research Institute, Collaborative Innovation Center for Viral Immunology, School of Medicine, Wuhan University, Wuhan 430071, China
| | - Hong-Bing Shu
- Medical Research Institute, Collaborative Innovation Center for Viral Immunology, School of Medicine, Wuhan University, Wuhan 430071, China
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38
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TAX1BP1 Restrains Virus-Induced Apoptosis by Facilitating Itch-Mediated Degradation of the Mitochondrial Adaptor MAVS. Mol Cell Biol 2016; 37:MCB.00422-16. [PMID: 27736772 DOI: 10.1128/mcb.00422-16] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 10/04/2016] [Indexed: 12/25/2022] Open
Abstract
The host response to RNA virus infection consists of an intrinsic innate immune response and the induction of apoptosis as mechanisms to restrict viral replication. The mitochondrial adaptor molecule MAVS plays critical roles in coordinating both virus-induced type I interferon production and apoptosis; however, the regulation of MAVS-mediated apoptosis is poorly understood. Here, we show that the adaptor protein TAX1BP1 functions as a negative regulator of virus-induced apoptosis. TAX1BP1-deficient cells are highly sensitive to apoptosis in response to infection with the RNA viruses vesicular stomatitis virus and Sendai virus and to transfection with poly(I·C). TAX1BP1 undergoes degradation during RNA virus infection, and loss of TAX1BP1 is associated with apoptotic cell death. TAX1BP1 deficiency augments virus-induced activation of proapoptotic c-Jun N-terminal kinase (JNK) signaling. Virus infection promotes the mitochondrial localization of TAX1BP1 and concomitant interaction with the mitochondrial adaptor MAVS. TAX1BP1 recruits the E3 ligase Itch to MAVS to trigger its ubiquitination and degradation, and loss of TAX1BP1 or Itch results in increased MAVS protein expression. Together, these results indicate that TAX1BP1 functions as an adaptor molecule for Itch to target MAVS during RNA virus infection and thus restrict virus-induced apoptosis.
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39
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Liu X, Cai X, Zhang D, Xu C, Xiao W. Zebrafish foxo3b Negatively Regulates Antiviral Response through Suppressing the Transactivity of irf3 and irf7. THE JOURNAL OF IMMUNOLOGY 2016; 197:4736-4749. [PMID: 27815423 DOI: 10.4049/jimmunol.1601187] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 10/06/2016] [Indexed: 12/25/2022]
Abstract
Forkhead box O (FOXO)3, a member of the FOXO family of transcription factors, plays key roles in various cellular processes, including development, longevity, reproduction, and metabolism. Recently, FOXO3 has also been shown to be involved in modulating the immune response. However, how FOXO3 regulates immunity and the underlying mechanisms are still largely unknown. In this study, we show that zebrafish (Danio rerio) foxo3b, an ortholog of mammalian FOXO3, is induced by polyinosinic-polycytidylic acid stimulation and spring viremia of carp virus (SVCV) infection. We found that foxo3b interacted with irf3 and irf7 to inhibit ifr3/irf7 transcriptional activity, thus resulting in suppression of SVCV or polyinosinic-polycytidylic acid-induced IFN activation. By suppressing expression of key antiviral genes, foxo3b negatively regulated the cellular antiviral response. Furthermore, upon SVCV infection, the expression of the key antiviral genes was significantly enhanced in foxo3b-null zebrafish larvae compared with wild-type larvae. Additionally, the replication of SVCV was inhibited in foxo3b-null zebrafish larvae, leading to a higher survival rate. Our findings suggest that by suppressing irf3/irf7 activity, zebrafish foxo3b negatively regulates the antiviral response, implicating the vital role of the FOXO gene family in innate immunity.
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Affiliation(s)
- Xing Liu
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and
| | - Xiaolian Cai
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and
| | - Dawei Zhang
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and
| | - Chenxi Xu
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and
| | - Wuhan Xiao
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China; and .,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, People's Republic of China
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40
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Liu X, Cai X, Hu B, Mei Z, Zhang D, Ouyang G, Wang J, Zhang W, Xiao W. Forkhead Transcription Factor 3a (FOXO3a) Modulates Hypoxia Signaling via Up-regulation of the von Hippel-Lindau Gene (VHL). J Biol Chem 2016; 291:25692-25705. [PMID: 27777301 DOI: 10.1074/jbc.m116.745471] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Revised: 10/20/2016] [Indexed: 01/26/2023] Open
Abstract
FOXO3a, a member of the forkhead homeobox type O (FOXO) family of transcriptional factors, regulates cell survival in response to DNA damage, caloric restriction, and oxidative stress. The von Hippel-Lindau (VHL) tumor suppressor gene encodes a component of the E3 ubiquitin ligase complex that mediates hypoxia-inducible factor α degradation under aerobic conditions, thus acting as one of the key regulators of hypoxia signaling. However, whether FOXO3a impacts cellular hypoxia stress remains unknown. Here we show that FOXO3a directly binds to the VHL promoter and up-regulates VHL expression. Using a zebrafish model, we confirmed the up-regulation of vhl by foxo3b, an ortholog of mammalian FOXO3a Furthermore, by employing the clustered regularly interspaced short palindromic repeats (CRISPR)-associated RNA-guided endonuclease Cas9 (CRISPR/Cas9) technology, we deleted foxo3b in zebrafish and determined that expression of hypoxia-inducible genes was affected under hypoxia. Moreover, foxo3b-null zebrafish exhibited impaired acute hypoxic tolerance, resulting in death. In conclusion, our findings suggest that, by modulating hypoxia-inducible factor activity via up-regulation of VHL, FOXO3a (foxo3b) plays an important role in survival in response to hypoxic stress.
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Affiliation(s)
- Xing Liu
- From the Key Laboratory of Aquatic Biodiversity and Conservation and
| | - Xiaolian Cai
- From the Key Laboratory of Aquatic Biodiversity and Conservation and
| | - Bo Hu
- From the Key Laboratory of Aquatic Biodiversity and Conservation and
| | - Zhichao Mei
- From the Key Laboratory of Aquatic Biodiversity and Conservation and
| | - Dawei Zhang
- From the Key Laboratory of Aquatic Biodiversity and Conservation and
| | - Gang Ouyang
- From the Key Laboratory of Aquatic Biodiversity and Conservation and
| | - Jing Wang
- From the Key Laboratory of Aquatic Biodiversity and Conservation and
| | - Wei Zhang
- From the Key Laboratory of Aquatic Biodiversity and Conservation and
| | - Wuhan Xiao
- From the Key Laboratory of Aquatic Biodiversity and Conservation and .,State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
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41
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VHLdb: A database of von Hippel-Lindau protein interactors and mutations. Sci Rep 2016; 6:31128. [PMID: 27511743 PMCID: PMC4980628 DOI: 10.1038/srep31128] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 07/08/2016] [Indexed: 01/15/2023] Open
Abstract
Mutations in von Hippel-Lindau tumor suppressor protein (pVHL) predispose to develop
tumors affecting specific target organs, such as the retina, epididymis, adrenal
glands, pancreas and kidneys. Currently, more than 400 pVHL interacting
proteins are either described in the literature or predicted in public databases.
This data is scattered among several different sources, slowing down the
comprehension of pVHL’s biological role. Here we present VHLdb, a novel
database collecting available interaction and mutation data on pVHL to provide novel
integrated annotations. In VHLdb, pVHL interactors are organized according to two
annotation levels, manual and automatic. Mutation data are easily accessible and a
novel visualization tool has been implemented. A user-friendly feedback function to
improve database content through community-driven curation is also provided. VHLdb
presently contains 478 interactors, of which 117 have been manually curated, and
1,074 mutations. This makes it the largest available database for pVHL-related
information. VHLdb is available from URL: http://vhldb.bio.unipd.it/.
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42
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Hao J, Chen X, Fu T, Liu J, Yu M, Han W, He S, Qian R, Zhang F. The Expression of VHL (Von Hippel-Lindau) After Traumatic Spinal Cord Injury and Its Role in Neuronal Apoptosis. Neurochem Res 2016; 41:2391-400. [PMID: 27324785 DOI: 10.1007/s11064-016-1952-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 05/07/2016] [Accepted: 05/09/2016] [Indexed: 12/11/2022]
Abstract
The VHL (Von Hippel-Lindau) gene is a tumor suppressor gene, which is best known as an E3 ubiquitin ligase that negatively regulates the hypoxia inducible factor. The inactivation of VHL gene could result in the abnormal synthesis of VHL protein, which is in contact with the development and occurrence of renal clear cell carcinoma. However, the expression and possible function of VHL in central nervous system (CNS) is still unclear. To examine the function of VHL in CNS injury and repair, we used an acute spinal cord injury (SCI) model in adult rats. Western blot analysis showed an important upregulation of VHL protein, reaching a peak at day 3 and then declined during the following days. Double immunofluorescence staining showed that VHL was co-expressed with neurons, but not with astrocytes and microglia. Moreover, we detected that active caspase-3 had co-localized with VHL in neurons after SCI. Additionally in vitro, VHL depletion, by short interfering RNA, significantly reduced neuronal apoptosis. In conclusion, these data suggested that the change of VHL protein expression was related to neuronal apoptosis after SCI.
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Affiliation(s)
- Jie Hao
- Medical College, Nantong University, Nantong, Jiangsu, 226001, People's Republic of China.,Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, People's Republic of China
| | - Xiaoqing Chen
- Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, People's Republic of China
| | - Ting Fu
- School of Nursing, Nantong University, Nantong, People's Republic of China
| | - Jie Liu
- Medical College, Nantong University, Nantong, Jiangsu, 226001, People's Republic of China.,Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, People's Republic of China
| | - Mingchen Yu
- Medical College, Nantong University, Nantong, Jiangsu, 226001, People's Republic of China.,Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, People's Republic of China
| | - Wei Han
- Medical College, Nantong University, Nantong, Jiangsu, 226001, People's Republic of China.,Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, People's Republic of China
| | - Shuang He
- The Second Affiliated Hospital, Nantong University, Nantong, 226001, People's Republic of China
| | - Rong Qian
- Medical College, Nantong University, Nantong, Jiangsu, 226001, People's Republic of China.,Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, People's Republic of China
| | - Feng Zhang
- Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu Province, 226001, People's Republic of China.
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Sohn J, Hur S. Filament assemblies in foreign nucleic acid sensors. Curr Opin Struct Biol 2016; 37:134-44. [PMID: 26859869 DOI: 10.1016/j.sbi.2016.01.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 01/20/2016] [Accepted: 01/21/2016] [Indexed: 12/24/2022]
Abstract
Helical filamentous assembly is ubiquitous in biology, but was only recently realized to be broadly employed in the innate immune system of vertebrates. Accumulating evidence suggests that the filamentous assemblies and helical oligomerization play important roles in detection of foreign nucleic acids and activation of the signaling pathways to produce antiviral and inflammatory mediators. In this review, we focus on the helical assemblies observed in the signaling pathways of RIG-I-like receptors (RLRs) and AIM2-like receptors (ALRs). We describe ligand-dependent oligomerization of receptor, receptor-dependent oligomerization of signaling adaptor molecules, and their functional implications and regulations.
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Affiliation(s)
- Jungsan Sohn
- Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| | - Sun Hur
- Harvard Medical School, Boston, MA, USA.
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