1
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Zheng C, Zhang L. Identifying RNA Sensors in Antiviral Innate Immunity. Methods Mol Biol 2025; 2854:107-115. [PMID: 39192123 DOI: 10.1007/978-1-0716-4108-8_12] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/29/2024]
Abstract
The innate immune system plays a pivotal role in pathogen recognition and the initiation of innate immune responses through its Pathogen Recognition Receptors (PRRs), which detect Pathogen-Associated Molecular Patterns (PAMPs). Nucleic acids, including RNA and DNA, are recognized as particularly significant PAMPs, especially in the context of viral pathogens. During RNA virus infections, specific sequences in the viral RNA mark it as non-self, enabling host recognition through interactions with RNA sensors, thereby triggering innate immunity. Given that some of the most lethal viruses are RNA viruses, they pose a severe threat to human and animal health. Therefore, understanding the immunobiology of RNA PRRs is crucial for controlling pathogen infections, particularly RNA virus infections. In this chapter, we will introduce a "pull-down" method for identifying RIG-I-like receptors, related RNA helicases, Toll-like receptors, and other RNA sensors.
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Affiliation(s)
- Chunfu Zheng
- Department of Microbiology, Immunology and Infectious Diseases, University of Calgary, Calgary, AB, Canada
| | - Liting Zhang
- Changzhou Key Laboratory of Molecular Diagnostics and Precision Cancer Medicine, Changzhou Wujin People's Hospital, Changzhou Medical Center, Nanjing Medical University, Changzhou, China.
- Wujin Institute of Molecular Diagnostics and Precision Cancer Medicine of Jiangsu University, Changzhou, China.
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2
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Calvo-Apalategi A, Nevado ML, Bravo-Gallego LY, González-Granado LI, Allende LM, Pena RR, López-Granados E, Reyburn HT. The lack of either IRF9, or STAT2, has surprisingly little effect on human natural killer cell development and function. Immunology 2024; 172:440-450. [PMID: 38514903 DOI: 10.1111/imm.13779] [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: 05/11/2022] [Accepted: 03/01/2024] [Indexed: 03/23/2024] Open
Abstract
Analysis of genetically defined immunodeficient patients allows study of the effect of the absence of specific proteins on human immune function in real-world conditions. Here we have addressed the importance of type I interferon signalling for human NK cell development by studying the phenotype and function of circulating NK cells isolated from patients suffering primary immunodeficiency disease due to mutation of either the human interferon regulatory factor 9 (IRF9) or the signal transducer and activator of transcription 2 (STAT2) genes. IRF9, together with phosphorylated STAT1 and STAT2, form a heterotrimer called interferon stimulated gene factor 3 (ISGF3) which promotes the expression of hundreds of IFN-stimulated genes that mediate antiviral function triggered by exposure to type I interferons. IRF9- and STAT2-deficient patients are unable to respond efficiently to stimulation by type I interferons and so our experiments provide insights into the importance of type I interferon signalling and the consequences of its impairment on human NK cell biology. Surprisingly, the NK cells of these patients display essentially normal phenotype and function.
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Affiliation(s)
| | - Marta López Nevado
- Immunology Department, University Hospital 12 de Octubre, Madrid, Spain
- Hospital 12 Octubre Research Institute (Imas12), Madrid, Spain
| | | | - Luis Ignacio González-Granado
- Immunology Department, University Hospital 12 de Octubre, Madrid, Spain
- Immunodeficiency Unit, Department of Pediatrics, University Hospital 12 de Octubre, Madrid, Spain
| | - Luis M Allende
- Immunology Department, University Hospital 12 de Octubre, Madrid, Spain
- Hospital 12 Octubre Research Institute (Imas12), Madrid, Spain
- School of Medicine, Complutense University of Madrid, Madrid, Spain
| | | | - Eduardo López-Granados
- Department of Immunology, La Paz University Hospital, Madrid, Spain
- Lymphocyte Pathophysiology Group, La Paz Institute of Biomedical Research, IdiPAZ, Madrid, Spain
| | - Hugh T Reyburn
- Department of Immunology and Oncology, CNB-CSIC, Madrid, Spain
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3
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Gu J, Chen C, He P, Du Y, Zhu B. Unraveling the Immune Regulatory Functions of USP5: Implications for Disease Therapy. Biomolecules 2024; 14:683. [PMID: 38927085 PMCID: PMC11201890 DOI: 10.3390/biom14060683] [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: 05/03/2024] [Revised: 05/30/2024] [Accepted: 06/08/2024] [Indexed: 06/28/2024] Open
Abstract
Ubiquitin-specific protease 5 (USP5) belongs to the ubiquitin-specific protease (USP) family, which uniquely recognizes unanchored polyubiquitin chains to maintain the homeostasis of monoubiquitin chains. USP5 participates in a wide range of cellular processes by specifically cleaving isopeptide bonds between ubiquitin and substrate proteins or ubiquitin itself. In the process of immune regulation, USP5 affects important cellular signaling pathways, such as NF-κB, Wnt/β-catenin, and IFN, by regulating ubiquitin-dependent protein degradation. These pathways play important roles in immune regulation and inflammatory responses. In addition, USP5 regulates the activity and function of immunomodulatory signaling pathways via the deubiquitination of key proteins, thereby affecting the activity of immune cells and the regulation of immune responses. In the present review, the structure and function of USP5, its role in immune regulation, and the mechanism by which USP5 affects the development of diseases by regulating immune signaling pathways are comprehensively overviewed. In addition, we also introduce the latest research progress of targeting USP5 in the treatment of related diseases, calling for an interdisciplinary approach to explore the therapeutic potential of targeting USP5 in immune regulation.
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Affiliation(s)
- Jinyi Gu
- Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730030, China; (J.G.); (P.H.); (Y.D.)
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation, Lanzhou 730030, China
- Clinical Laboratory, Affiliated Hospital of Yunnan University, Kunming 650032, China
| | - Changshun Chen
- Department of Orthopedics, Lanzhou University Second Hospital, Lanzhou 730030, China;
- Department of Orthopedics and Trauma Surgery, Affiliated Hospital of Yunnan University, Kunming 650032, China
| | - Pu He
- Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730030, China; (J.G.); (P.H.); (Y.D.)
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation, Lanzhou 730030, China
| | - Yunjie Du
- Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730030, China; (J.G.); (P.H.); (Y.D.)
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation, Lanzhou 730030, China
| | - Bingdong Zhu
- Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730030, China; (J.G.); (P.H.); (Y.D.)
- Gansu Provincial Key Laboratory of Evidence Based Medicine and Clinical Translation, Lanzhou 730030, China
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4
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Ouyang Z, Xu J, Liu T, Lin S, Sun Y, Huang Y, Zheng Z, Zeng G, Li C, Li S, Ding Y. STING/TBK1 Regulates Inflammation in Macrophages and Titanium Particles-Induced Osteolysis. ACS Biomater Sci Eng 2023. [PMID: 37134278 DOI: 10.1021/acsbiomaterials.2c01509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Inflammatory response in macrophages on account of prostheses-derived wear particles is the leading cause of artificial joint failure. However, the mechanism by which wear particles initiate macrophage inflammation has not been fully elucidated. Previous research studies have identified TANK-binding kinase 1 (TBK1) and stimulator of interferon genes (STING) as potential factors in inflammation and autoimmune diseases. Here, we found that both TBK1 and STING were increased in synovium from aseptic loosening (AL) patients and were activated in titanium particles (TiPs)-stimulated macrophages. Lentivirus-mediated knockdown of TBK or STING significantly inhibited the inflammatory effects of macrophages, while overexpression of TBK or STING exerted opposite results. In concrete, STING/TBK1 promoted the activation of NF-κB and IRF3 pathways and macrophage M1 polarization. For further validation, a mice cranial osteolysis model was constructed for in vivo assays, and we found that STING-overexpressed lentivirus injection exacerbated osteolysis and inflammation, which was counteracted by TBK1-knockdown injection. In conclusion, STING/TBK1 enhanced TiP-induced macrophage inflammation and osteolysis via orchestrating the activation of NF-κB and IRF3 pathways and M1 polarization, which suggested STING/TBK1 as potential therapeutic targets for preventing AL of prostheses.
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Affiliation(s)
- Zhuji Ouyang
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Jing Xu
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Taihe Liu
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Sipeng Lin
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Yujun Sun
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Yuhsi Huang
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Zhongcan Zheng
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Gang Zeng
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Changchuan Li
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Shixun Li
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
| | - Yue Ding
- Department of Orthopedic Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, No. 107, Yanjiang West Road, Yuexiu District, Guangzhou 510120, China
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5
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Differential Cellular Sensing of Fusion from within and Fusion from without during Virus Infection. Viruses 2023; 15:v15020301. [PMID: 36851515 PMCID: PMC9962872 DOI: 10.3390/v15020301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
The physical entry of virus particles into cells triggers an innate immune response that is dependent on both calcium and nucleic acid sensors, with particles containing RNA or DNA genomes detected by RNA or DNA sensors, respectively. While membrane fusion in the absence of viral nucleic acid causes an innate immune response that is dependent on calcium, the involvement of nucleic acid sensors is poorly understood. Here, we used lipoplexes containing purified reovirus p14 fusion protein as a model of exogenous or fusion from without and a cell line expressing inducible p14 protein as a model of endogenous or fusion from within to examine cellular membrane fusion sensing events. We show that the cellular response to membrane fusion in both models is dependent on calcium, IRF3 and IFN. The method of sensing fusion, however, differs between fusion from without and fusion from within. Exogenous p14 lipoplexes are detected by RIG-I-like RNA sensors, whereas fusion by endogenous p14 requires both RIG-I and STING to trigger an IFN response. The source of nucleic acid that is sensed appears to be cellular in origin. Future studies will investigate the source of endogenous nucleic acids recognized following membrane fusion events.
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Abstract
PURPOSE OF REVIEW As of January 8, 2022, a global pandemic caused by infection with severe acute respiratory syndrome coronavirus (SARS-CoV)-2, a new RNA virus, has resulted in 304,896,785 cases in over 222 countries and regions, with over 5,500,683 deaths (www.worldometers.info/coronavirus/). Reports of neurological and psychiatric symptoms in the context of coronavirus infectious disease 2019 (COVID-19) range from headache, anosmia, and dysgeusia, to depression, fatigue, psychosis, seizures, delirium, suicide, meningitis, encephalitis, inflammatory demyelination, infarction, and acute hemorrhagic necrotizing encephalopathy. Moreover, 30-50% of COVID-19 survivors develop long-lasting neurologic symptoms, including a dysexecutive syndrome, with inattention and disorientation, and/or poor movement coordination. Detection of SARS-CoV-2 RNA within the central nervous system (CNS) of patients is rare, and mechanisms of neurological damage and ongoing neurologic diseases in COVID-19 patients are unknown. However, studies demonstrating viral glycoprotein effects on coagulation and cerebral vasculature, and hypoxia- and cytokine-mediated coagulopathy and CNS immunopathology suggest both virus-specific and neuroimmune responses may be involved. This review explores potential mechanistic insights that could contribute to COVID-19-related neurologic disease. RECENT FINDINGS While the development of neurologic diseases during acute COVID-19 is rarely associated with evidence of viral neuroinvasion, new evidence suggests SARS-CoV-2 Spike (S) protein exhibits direct inflammatory and pro-coagulation effects. This, in conjunction with immune dysregulation resulting in cytokine release syndrome (CRS) may result in acute cerebrovascular or neuroinflammatory diseases. Additionally, CRS-mediated loss of blood-brain barrier integrity in specific brain regions may contribute to the expression of proinflammatory mediators by neural cells that may impact brain function long after resolution of acute infection. Importantly, host co-morbid diseases that affect vascular, pulmonary, or CNS function may contribute to the type of neurologic disease triggered by SARS-COV-2 infection. SUMMARY Distinct effects of SARS-CoV-2 S protein and CNS compartment- and region-specific responses to CRS may underlie acute and chronic neuroinflammatory diseases associated with COVID-19.
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Affiliation(s)
- Robyn S Klein
- Center for Neuroimmunology & Neuroinfectious Diseases, Departments of Medicine, Pathology & Immunology, and Neuroscience, Washington University School of Medicine, St. Louis, Missouri, USA
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Liu X, Ding S, Liu P. The Roles of Gasdermin D in Coronavirus Infection and Evasion. Front Microbiol 2021; 12:784009. [PMID: 34899666 PMCID: PMC8662355 DOI: 10.3389/fmicb.2021.784009] [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: 09/27/2021] [Accepted: 10/22/2021] [Indexed: 11/17/2022] Open
Abstract
Pyroptosis is lytic, programmed cell death and plays a critical role against microbial invasion, functioning as an innate immune effector mechanism. The pore-forming protein gasdermin D (GSDMD), a member of gasdermin family proteins, is a primary effector of pyroptosis. The cleavage of inflammasome-associated inflammatory caspases activates GSDMD to liberate the N-terminal effector domain from the C-terminal inhibitory domain and form pores in the cellular plasma membrane. Emerging evidence shows that the pore-forming activity of GSDMD beyond pyroptosis and modifies non-lytic cytosolic protein secretion in living cells and innate immunity. While the essential roles of GSDMD in bacterial infection and cancer have been widely investigated, the importance of GSDMD in virus infection, including coronaviruses, remains elusive. Here, we review the current literature regarding the activation and functions of GSDMD during virus infections. Last, we further discuss the roles of GSDMD and the therapeutic potential of targeting this GSDMD pore-forming activity in coronavirus diseases.
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Affiliation(s)
- Xiang Liu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Shihao Ding
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Pinghuang Liu
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
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Abstract
Elderly individuals with chronic disorders tend to develop inflammaging, a condition associated with elevated levels of blood inflammatory markers, and increased susceptibility to chronic disease progression. Native and adaptive immunity are both involved in immune system senescence, kidney fibrosis and aging. The innate immune system is characterized by a limited number of receptors, constantly challenged by self and non-self stimuli. Circulating and kidney resident myeloid and lymphoid cells are all equipped with pattern recognition receptors (PRRs). Recent reports on PRRs show kidney overexpression of toll-like receptors (TLRs) in inflammaging autoimmune renal diseases, vasculitis, acute kidney injury and kidney transplant rejection. TLR upregulation leads to proinflammatory cytokine induction, fibrosis, and chronic kidney disease progression. TLR2 blockade in a murine model of renal ischemia reperfusion injury prevented the escape of natural killer cells and neutrophils by inflammaging kidney injury. Tumor necrosis factor-α blockade in endothelial cells with senescence-associated secretory phenotype significantly reduced interleukin-6 release. These findings should encourage experimental and translational clinical trials aimed at modulating renal inflammaging by native immunity blockade.
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Sharma N, Wang C, Kessler P, Sen GC. Herpes simplex virus 1 evades cellular antiviral response by inducing microRNA-24, which attenuates STING synthesis. PLoS Pathog 2021; 17:e1009950. [PMID: 34591940 PMCID: PMC8483329 DOI: 10.1371/journal.ppat.1009950] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/08/2021] [Indexed: 12/24/2022] Open
Abstract
STING is a nodal point for cellular innate immune response to microbial infections, autoimmunity and cancer; it triggers the synthesis of the antiviral proteins, type I interferons. Many DNA viruses, including Herpes Simplex Virus 1 (HSV1), trigger STING signaling causing inhibition of virus replication. Here, we report that HSV1 evades this antiviral immune response by inducing a cellular microRNA, miR-24, which binds to the 3’ untranslated region of STING mRNA and inhibits its translation. Expression of the gene encoding miR-24 is induced by the transcription factor AP1 and activated by MAP kinases in HSV1-infected cells. Introduction of exogenous miR-24 or prior activation of MAPKs, causes further enhancement of HSV1 replication in STING-expressing cells. Conversely, transfection of antimiR-24 inhibits virus replication in those cells. HSV1 infection of mice causes neuropathy and death; using two routes of infection, we demonstrated that intracranial injection of antimiR-24 alleviates both morbidity and mortality of the infected mice. Our studies reveal a new immune evasion strategy adopted by HSV1 through the regulation of STING and demonstrates that it can be exploited to enhance STING’s antiviral action. The type I interferon system is the first line of cellular antiviral innate immune response. Virus infection is recognized by various pattern recognition receptors in the infected cell and it activates the interferon system to inhibit virus replication. However, viruses have evolved various mechanisms to evade the cellular immune response and enhance viral replication. Our study uncovers an immune evasion strategy used by the Herpes Simplex virus to circumvent the cGAS/STING signaling pathway which is the pivotal innate immune response to combat DNA virus replication. miR-24 induction by HSV1 targets STING and hence, dampens Type I Immune response against the virus. The induction of miR-24 is regulated by virus induced MAPK activation, which are also required during early lytic cycles of HSV1 replication and is indispensable for HSV1 reactivation from latency in neurons; depicting a new direct co-relation between MAPK activation and HSV1 replication orchestrated through cellular miR-24. Silencing of miR-24 in mice brain curtails viral replication and disease severity. Overall, these results indicate possible therapeutic use of stable antimiR-24 against HSV1 and other diseases that are alleviated by STING.
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Affiliation(s)
- Nikhil Sharma
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Chenyao Wang
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Patricia Kessler
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
| | - Ganes C Sen
- Department of Inflammation and Immunity, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio, United States of America
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Fang M, Hu W, Liu B. Characterization of bat coronaviruses: a latent global threat. J Vet Sci 2021; 22:e72. [PMID: 34553517 PMCID: PMC8460465 DOI: 10.4142/jvs.2021.22.e72] [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] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 07/27/2021] [Accepted: 08/03/2021] [Indexed: 12/23/2022] Open
Abstract
It has been speculated that bats serve as reservoirs of a huge variety of emerging coronaviruses (CoVs) that have been responsible for severe havoc in human health systems as well as negatively affecting human economic and social systems. A prime example is the currently active severe acute respiratory syndrome (SARS)-CoV2, which presumably originated from bats, demonstrating that the risk of a new outbreak of bat coronavirus is always latent. Therefore, an in-depth investigation to better comprehend bat CoVs has become an important issue within the international community, a group that aims to attenuate the consequences of future outbreaks. In this review, we present a concise introduction to CoVs found in bats and discuss their distribution in Southeast Asia. We also discuss the unique adaptation features in bats that confer the ability to be a potential coronavirus reservoir. In addition, we review the bat coronavirus-linked diseases that have emerged in the last two decades. Finally, we propose key factors helpful in the prediction of a novel coronavirus outbreak and present the most recent methods used to forecast an evolving outbreak.
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Affiliation(s)
- Manxin Fang
- College of Life Science and Resources and Environment, Yichun University, Yichun 336000, Jiangxi, China
| | - Wei Hu
- College of Life Science and Resources and Environment, Yichun University, Yichun 336000, Jiangxi, China
| | - Ben Liu
- College of Life Science and Resources and Environment, Yichun University, Yichun 336000, Jiangxi, China
- Jiangxi Lvke Agriculture and Animal Husbandry Technology Co., Ltd, Yichun 336000, Jiangxi, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Yichun 336000, Jiangxi, China.
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Aydemir MN, Aydemir HB, Korkmaz EM, Budak M, Cekin N, Pinarbasi E. Computationally predicted SARS-COV-2 encoded microRNAs target NFKB, JAK/STAT and TGFB signaling pathways. GENE REPORTS 2021; 22:101012. [PMID: 33398248 PMCID: PMC7773562 DOI: 10.1016/j.genrep.2020.101012] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 11/27/2020] [Accepted: 12/13/2020] [Indexed: 12/13/2022]
Abstract
Recently an outbreak that emerged in Wuhan, China in December 2019, spread to the whole world in a short time and killed >1,410,000 people. It was determined that a new type of beta coronavirus called severe acute respiratory disease coronavirus type 2 (SARS-CoV-2) was causative agent of this outbreak and the disease caused by the virus was named as coronavirus disease 19 (COVID19). Despite the information obtained from the viral genome structure, many aspects of the virus-host interactions during infection is still unknown. In this study we aimed to identify SARS-CoV-2 encoded microRNAs and their cellular targets. We applied a computational method to predict miRNAs encoded by SARS-CoV-2 along with their putative targets in humans. Targets of predicted miRNAs were clustered into groups based on their biological processes, molecular function, and cellular compartments using GO and PANTHER. By using KEGG pathway enrichment analysis top pathways were identified. Finally, we have constructed an integrative pathway network analysis with target genes. We identified 40 SARS-CoV-2 miRNAs and their regulated targets. Our analysis showed that targeted genes including NFKB1, NFKBIE, JAK1-2, STAT3-4, STAT5B, STAT6, SOCS1-6, IL2, IL8, IL10, IL17, TGFBR1-2, SMAD2-4, HDAC1-6 and JARID1A-C, JARID2 play important roles in NFKB, JAK/STAT and TGFB signaling pathways as well as cells' epigenetic regulation pathways. Our results may help to understand virus-host interaction and the role of viral miRNAs during SARS-CoV-2 infection. As there is no current drug and effective treatment available for COVID19, it may also help to develop new treatment strategies.
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Key Words
- ACE-2, angiotensin-converting enzyme 2
- AKT1, AKT serine/threonine kinase 1
- BCL2, BCL2 apoptosis regulator
- CDK1, cyclin dependent kinase 1
- CDKL2, cyclin dependent kinase like 2
- COVID19, new type corona virus disease
- CTNNB1, catenin beta 1
- CXCL1, C-X-C motif chemokine ligand 1
- CXCL10, C-X-C motif chemokine ligand 10
- CXCL11, C-X-C motif chemokine ligand 11
- CXCL16, C-X-C motif chemokine ligand 16
- CXCL9, C-X-C motif chemokine ligand 9
- E2F1, E2F transcription factor 1
- EIF4A1, eukaryotic translation initiation factor 4A1
- GRB2, growth factor receptor bound protein 2
- HDAC1, histone deacetylase 1
- HDAC2, histone deacetylase 2
- HDAC3, histone deacetylase 3
- HIF1A, hypoxia inducible factor 1 subunit alpha
- ICTV, International Committee on Taxonomy of Viruses
- IFNGR2, interferon gamma receptor 2
- IKBKE, inhibitor of nuclear factor kappa B kinase subunit epsilon
- IL10, interleukin 10
- IL13, interleukin 13
- IL15, interleukin 15
- IL16, interleukin 16
- IL17A, interleukin 17 A
- IL2, interleukin 2
- IL21, interleukin 21
- IL22, interleukin 22
- IL24, interleukin 24
- IL25, interleukin 25
- IL33, interleukin 33
- IL5, interleukin 5
- IL7, interleukin 7
- IL8, interleukin 8
- JAK/STAT
- JAK1, Janus kinase 1
- JAK2, Janus kinase 2
- JARID1A, lysine demethylase 5A
- JARID1B, lysine demethylase 5B
- JARID1C, lysine demethylase 5C
- JARID2, Jumonji and AT-rich interaction domain containing 2
- KEGG, Kyoto Encyclopedia of Genes and Genomes
- MAPK1, mitogen-activated protein kinase 1
- MAPK3, mitogen-activated protein kinase 3
- MAPK4, mitogen-activated protein kinase 4
- MAPK6, mitogen-activated protein kinase 6
- MAPK7, mitogen-activated protein kinase 7
- NFKB
- NFKB1, nuclear factor kappa B subunit 1
- NFKBIE, NFKB inhibitor epsilon
- NOS3, nitric oxide synthase 3
- PANTHER, protein analysis through evolutionary relationships
- PIK3CA, phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha
- PTEN, phosphatase and tensin homolog
- RB1, RB transcriptional corepressor 1
- RHOA, ras homolog family member A
- SARS-CoV-2
- SARS-CoV-2, severe acute respiratory disease coronavirus type 2
- SMAD2, SMAD family member 2
- SMAD3, SMAD family member 3
- SMAD4, SMAD family member 4
- SOCS1, suppressor of cytokine signaling 1
- SOCS3, suppressor of cytokine signaling 3
- SOCS4, suppressor of cytokine signaling 4
- SOCS5, suppressor of cytokine signaling 5
- SOCS6, suppressor of cytokine signaling 6
- SOS1, SOS Ras/Rac guanine nucleotide exchange factor 1
- SP1, Sp1 transcription factor
- STAT3, signal transducer and activator of transcription 3
- STAT4, signal transducer and activator of transcription 4
- STAT5B, signal transducer and activator of transcription 5B
- STAT6, signal transducer and activator of transcription 6
- SUMO1, small ubiquitin like modifier 1
- SUMO2, small ubiquitin like modifier 2
- TBP, TATA-box binding protein
- TGFB
- TGFBR1, transforming growth factor beta receptor 1
- TGFBR2, transforming growth factor beta receptor 2
- TMPRSS11A, transmembrane serine protease 11A
- TMPRSS4, transmembrane serine protease 4
- TNFRSF21, TNF receptor superfamily member 21
- WHO, World Health Organization
- miRNA
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Affiliation(s)
- Merve Nur Aydemir
- Department of Molecular Biology and Genetics, Faculty of Science, Sivas Cumhuriyet University, Sivas, Turkey
| | - Habes Bilal Aydemir
- Department of Molecular Biology and Genetics, Faculty of Arts and Sciences, Gaziosmanpaşa University, Tokat, Turkey
| | - Ertan Mahir Korkmaz
- Department of Molecular Biology and Genetics, Faculty of Science, Sivas Cumhuriyet University, Sivas, Turkey
| | - Mahir Budak
- Department of Molecular Biology and Genetics, Faculty of Science, Sivas Cumhuriyet University, Sivas, Turkey
| | - Nilgun Cekin
- Sivas Cumhuriyet University, Faculty of Medicine, Department of Medical Biology, 58140 Sivas, Turkey
| | - Ergun Pinarbasi
- Sivas Cumhuriyet University, Faculty of Medicine, Department of Medical Biology, 58140 Sivas, Turkey
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12
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Abstract
Pyroptosis, a programmed cell death, functions as an innate immune effector mechanism and plays a crucial role against microbial invasion. Gasdermin D (GSDMD), as the main pyroptosis effector, mediates pyroptosis and promotes releasing proinflammatory molecules into the extracellular environment through pore-forming activity, modifying inflammation and immune responses. While the substantial importance of GSDMD in microbial infection and cancer has been widely investigated, the role of GSDMD in virus infection, including coronaviruses, remains unclear. Enteric coronavirus transmissible gastroenteritis virus (TGEV) and porcine deltacoronavirus (PDCoV) are the major agents for lethal watery diarrhea in neonatal pigs and pose the potential for spillover from pigs to humans. In this study, we found that alphacoronavirus TGEV upregulated and activated GSDMD, resulting in pyroptosis after infection. Furthermore, the fragment of swine GSDMD from amino acids 242 to 279 (242-279 fragment) was required to induce pyroptosis. Notably, GSDMD strongly inhibited both TGEV and PDCoV infection. Mechanistically, the antiviral activity of GSDMD was mediated through promoting the nonclassical release of antiviral beta interferon (IFN-β) and then enhancing the interferon-stimulated gene (ISG) responses. These findings showed that GSDMD dampens coronavirus infection by an uncovered GSDMD-mediated IFN secretion, which may present a novel target of coronavirus antiviral therapeutics. IMPORTANCE Coronaviruses, primarily targeting respiratory and gastrointestinal epithelia in vivo, have a serious impact on humans and animals. GSDMD, a main executioner of pyroptosis, is highly expressed in epithelial cells and involves viral infection pathogenesis. While the functions and importance of GSDMD as a critical regulator of inflammasome activities in response to intracellular bacterial infection have been extensively investigated, the roles of GSDMD during coronavirus infection remain unclear. We here show that alphacoronavirus TGEV triggered pyroptosis and upregulated GSDMD expression, while GSDMD broadly suppressed the infection of enteric coronavirus TGEV and PDCoV by its pore-forming activity via promoting unconventional release of IFN-β. Our study highlights the importance of GSDMD as a regulator of innate immunity and may open new avenues for treating coronavirus infection.
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13
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Strumillo ST, Kartavykh D, de Carvalho FF, Cruz NC, de Souza Teodoro AC, Sobhie Diaz R, Curcio MF. Host-virus interaction and viral evasion. Cell Biol Int 2021; 45:1124-1147. [PMID: 33533523 PMCID: PMC8014853 DOI: 10.1002/cbin.11565] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 01/24/2021] [Indexed: 12/12/2022]
Abstract
With each infectious pandemic or outbreak, the medical community feels the need to revisit basic concepts of immunology to understand and overcome the difficult times brought about by these infections. Regarding viruses, they have historically been responsible for many deaths, and such a peculiarity occurs because they are known to be obligate intracellular parasites that depend upon the host's cell machinery for their replication. Successful infection with the production of essential viral components requires constant viral evolution as a strategy to manipulate the cellular environment, including host internal factors, the host's nonspecific and adaptive immune responses to viruses, the metabolic and energetic state of the infected cell, and changes in the intracellular redox environment during the viral infection cycle. Based on this knowledge, it is fundamental to develop new therapeutic strategies for controlling viral dissemination, by means of antiviral therapies, vaccines, or antioxidants, or by targeting the inhibition or activation of cell signaling pathways or metabolic pathways that are altered during infection. The rapid recovery of altered cellular homeostasis during viral infection is still a major challenge. Here, we review the strategies by which viruses evade the host's immune response and potential tools used to develop more specific antiviral therapies to cure, control, or prevent viral diseases.
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Affiliation(s)
- Scheilla T Strumillo
- Department of Biochemistry, Laboratory of Cell Signaling, Federal University of São Paulo, São Paulo, Brazil
| | - Denis Kartavykh
- Department of Medicine, Laboratory of Retrovirology, Federal University of São Paulo, São Paulo, Brazil
| | - Fábio F de Carvalho
- Departament of Educational Development, Getulio Vargas Foundation, São Paulo, Brazil
| | - Nicolly C Cruz
- Department of Medicine, Laboratory of Retrovirology, Federal University of São Paulo, São Paulo, Brazil
| | - Ana C de Souza Teodoro
- Department of Biochemistry, Laboratory of Cell Signaling, Federal University of São Paulo, São Paulo, Brazil
| | - Ricardo Sobhie Diaz
- Department of Medicine, Laboratory of Retrovirology, Federal University of São Paulo, São Paulo, Brazil
| | - Marli F Curcio
- Department of Medicine, Laboratory of Retrovirology, Federal University of São Paulo, São Paulo, Brazil
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14
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Donnik IM, Popov IV, Sereda SV, Popov IV, Chikindas ML, Ermakov AM. Coronavirus Infections of Animals: Future Risks to Humans. BIOL BULL+ 2021; 48:26-37. [PMID: 33679117 PMCID: PMC7917535 DOI: 10.1134/s1062359021010052] [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: 05/04/2020] [Revised: 06/27/2020] [Accepted: 07/17/2020] [Indexed: 01/31/2023]
Abstract
Coronaviruses have tremendous evolutionary potential, and three major outbreaks of new human coronavirus infections have occurred in the recent history of humankind. In this paper, the patterns of occurrence of new zoonotic coronavirus infections and the role of bioveterinary control in preventing their potential outbreaks in the future are determined. The possibility of SARS-CoV-2 infection in companion animals is considered. Diverse human activities may trigger various interactions between animal species and their viruses, sometimes causing the emergence of new viral pathogens. In addition, the possibility of using probiotics for the control of viral infections in animals is discussed.
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Affiliation(s)
- I. M. Donnik
- Russian Academy of Sciences, 119991 Moscow, Russia
| | - Ig. V. Popov
- Don State Technical University, 344000 Rostov-on-Don, Russia ,Rostov State Medical University, 344022 Rostov-on-Don, Russia
| | - S. V. Sereda
- Don State Technical University, 344000 Rostov-on-Don, Russia
| | - Il. V. Popov
- Rostov State Medical University, 344022 Rostov-on-Don, Russia
| | - M. L. Chikindas
- Don State Technical University, 344000 Rostov-on-Don, Russia ,Health Promoting Naturals Laboratory, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, 08901 New Brunswick, NJ USA
| | - A. M. Ermakov
- Don State Technical University, 344000 Rostov-on-Don, Russia
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15
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Daussy CF, Wodrich H. "Repair Me if You Can": Membrane Damage, Response, and Control from the Viral Perspective. Cells 2020; 9:cells9092042. [PMID: 32906744 PMCID: PMC7564661 DOI: 10.3390/cells9092042] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/03/2020] [Accepted: 09/04/2020] [Indexed: 12/13/2022] Open
Abstract
Cells are constantly challenged by pathogens (bacteria, virus, and fungi), and protein aggregates or chemicals, which can provoke membrane damage at the plasma membrane or within the endo-lysosomal compartments. Detection of endo-lysosomal rupture depends on a family of sugar-binding lectins, known as galectins, which sense the abnormal exposure of glycans to the cytoplasm upon membrane damage. Galectins in conjunction with other factors orchestrate specific membrane damage responses such as the recruitment of the endosomal sorting complex required for transport (ESCRT) machinery to either repair damaged membranes or the activation of autophagy to remove membrane remnants. If not controlled, membrane damage causes the release of harmful components including protons, reactive oxygen species, or cathepsins that will elicit inflammation. In this review, we provide an overview of current knowledge on membrane damage and cellular responses. In particular, we focus on the endo-lysosomal damage triggered by non-enveloped viruses (such as adenovirus) and discuss viral strategies to control the cellular membrane damage response. Finally, we debate the link between autophagy and inflammation in this context and discuss the possibility that virus induced autophagy upon entry limits inflammation.
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16
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Tiwari SK, Dicks LMT, Popov IV, Karaseva A, Ermakov AM, Suvorov A, Tagg JR, Weeks R, Chikindas ML. Probiotics at War Against Viruses: What Is Missing From the Picture? Front Microbiol 2020; 11:1877. [PMID: 32973697 PMCID: PMC7468459 DOI: 10.3389/fmicb.2020.01877] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 07/16/2020] [Indexed: 01/07/2023] Open
Abstract
Our world is now facing a multitude of novel infectious diseases. Bacterial infections are treated with antibiotics, albeit with increasing difficulty as many of the more common causes of infection have now developed broad spectrum antimicrobial resistance. However, there is now an even greater challenge from both old and new viruses capable of causing respiratory, enteric, and urogenital infections. Reports of viruses resistant to frontline therapeutic drugs are steadily increasing and there is an urgent need to develop novel antiviral agents. Although this all makes sense, it seems rather strange that relatively little attention has been given to the antiviral capabilities of probiotics. Over the years, beneficial strains of lactic acid bacteria (LAB) have been successfully used to treat gastrointestinal, oral, and vaginal infections, and some can also effect a reduction in serum cholesterol levels. Some probiotics prevent gastrointestinal dysbiosis and, by doing so, reduce the risk of developing secondary infections. Other probiotics exhibit anti-tumor and immunomodulating properties, and in some studies, antiviral activities have been reported for probiotic bacteria and/or their metabolites. Unfortunately, the mechanistic basis of the observed beneficial effects of probiotics in countering viral infections is sometimes unclear. Interestingly, in COVID-19 patients, a clear decrease has been observed in cell numbers of Lactobacillus and Bifidobacterium spp., both of which are common sources of intestinal probiotics. The present review, specifically motivated by the need to implement effective new counters to SARS-CoV-2, focusses attention on viruses capable of co-infecting humans and other animals and specifically explores the potential of probiotic bacteria and their metabolites to intervene with the process of virus infection. The goal is to help to provide a more informed background for the planning of future probiotic-based antiviral research.
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Affiliation(s)
- Santosh Kumar Tiwari
- Department of Genetics, Maharshi Dayanand University, Rohtak, India,*Correspondence: Santosh Kumar Tiwari,
| | - Leon M. T. Dicks
- Department of Microbiology, Stellenbosch University, Stellenbosch, South Africa
| | - Igor V. Popov
- Center for Agro-Biotechnology, Faculty of Bioengineering and Veterinary Medicine, Don State Technical University, Rostov-on-Don, Russia
| | - Alena Karaseva
- Institute of Experimental Medicine, Saint Petersburg, Russia
| | - Alexey M. Ermakov
- Center for Agro-Biotechnology, Faculty of Bioengineering and Veterinary Medicine, Don State Technical University, Rostov-on-Don, Russia
| | - Alexander Suvorov
- Institute of Experimental Medicine, Saint Petersburg, Russia,Saint Petersburg State University, Saint Petersburg, Russia
| | | | - Richard Weeks
- Health Promoting Naturals Laboratory, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, Brunswick, NJ, United States
| | - Michael L. Chikindas
- Center for Agro-Biotechnology, Faculty of Bioengineering and Veterinary Medicine, Don State Technical University, Rostov-on-Don, Russia,Health Promoting Naturals Laboratory, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey, Brunswick, NJ, United States
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17
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Weinhage T, Wirth T, Schütz P, Becker P, Lueken A, Skryabin BV, Wittkowski H, Foell D. The Receptor for Advanced Glycation Endproducts (RAGE) Contributes to Severe Inflammatory Liver Injury in Mice. Front Immunol 2020; 11:1157. [PMID: 32670276 PMCID: PMC7326105 DOI: 10.3389/fimmu.2020.01157] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 05/11/2020] [Indexed: 12/24/2022] Open
Abstract
Background: The receptor for advanced glycation end products (RAGE) is a multiligand receptor involved in a number of processes and disorders. While it is known that RAGE-signaling can contribute to toxic liver damage and fibrosis, its role in acute inflammatory liver injury and septic multiorgan failure is yet undefined. We examined RAGE in lipopolysaccharide (LPS) induced acute liver injury of D-galN sensitized mice as a classical model for tumor necrosis factor alpha (TNF-α) dependent inflammatory organ damage. Methods: Mice (Rage–/– and C57BL/6) were intraperitoneally injected with D-galN (300 mg/kg) and LPS (10 μg/kg). Animals were monitored clinically, and cytokines, damage associated molecular pattern molecules (DAMPs) as well as liver enzymes were determined in serum. Liver histology, hepatic cytokines as well as RAGE mRNA expression were analyzed. Cellular activation and functionality were evaluated by flow cytometry both in bone marrow- and liver-derived cells. Results: Genetic deficiency of RAGE significantly reduced the mortality of mice exposed to LPS/D-galN. Hepatocyte damage markers were reduced in Rage–/– mice, and liver histopathology was less severe. Rage–/– mice produced less pro-inflammatory cytokines and DAMPs in serum and liver. While immune cell functions appeared normal, TNF-α production by hepatocytes was reduced in Rage–/– mice. Conclusions: We found that RAGE deletion attenuated the expression of pro-inflammatory cytokines and DAMPs in hepatocytes without affecting cellular immune functions in the LPS/D-galN model of murine liver injury. Our data highlight the importance of tissue-specific RAGE-signaling also in acute inflammatory liver stress contributing to sepsis and multiorgan failure.
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Affiliation(s)
- Toni Weinhage
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Timo Wirth
- Department of Neurology With Institute of Translational Neurology, University Hospital Münster, Münster, Germany
| | - Paula Schütz
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Philipp Becker
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Aloys Lueken
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Boris V Skryabin
- Core Facility of Transgenic Animal and Genetic Engineering Models (TRAM), University of Münster, Münster, Germany
| | - Helmut Wittkowski
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
| | - Dirk Foell
- Department of Pediatric Rheumatology and Immunology, University of Münster, Münster, Germany
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18
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Banerjee A, Baker ML, Kulcsar K, Misra V, Plowright R, Mossman K. Novel Insights Into Immune Systems of Bats. Front Immunol 2020; 11:26. [PMID: 32117225 PMCID: PMC7025585 DOI: 10.3389/fimmu.2020.00026] [Citation(s) in RCA: 160] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 01/08/2020] [Indexed: 11/13/2022] Open
Abstract
In recent years, viruses similar to those that cause serious disease in humans and other mammals have been detected in apparently healthy bats. These include filoviruses, paramyxoviruses, and coronaviruses that cause severe diseases such as Ebola virus disease, Marburg haemorrhagic fever and severe acute respiratory syndrome (SARS) in humans. The evolution of flight in bats seem to have selected for a unique set of antiviral immune responses that control virus propagation, while limiting self-damaging inflammatory responses. Here, we summarize our current understanding of antiviral immune responses in bats and discuss their ability to co-exist with emerging viruses that cause serious disease in other mammals. We highlight how this knowledge may help us to predict viral spillovers into new hosts and discuss future directions for the field.
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Affiliation(s)
- Arinjay Banerjee
- Department of Pathology and Molecular Medicine, Michael DeGroote Institute for Infectious Disease Research, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
| | - Michelle L Baker
- Health and Biosecurity Business Unit, Australian Animal Health Laboratory, CSIRO, Geelong, VIC, Australia
| | - Kirsten Kulcsar
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Vikram Misra
- Department of Veterinary Microbiology, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Raina Plowright
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT, United States
| | - Karen Mossman
- Department of Pathology and Molecular Medicine, Michael DeGroote Institute for Infectious Disease Research, McMaster Immunology Research Centre, McMaster University, Hamilton, ON, Canada
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19
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Ning F, Xin H, Liu J, Lv C, Xu X, Wang M, Wang Y, Zhang W, Zhang X. Structure and function of USP5: Insight into physiological and pathophysiological roles. Pharmacol Res 2019; 157:104557. [PMID: 31756387 DOI: 10.1016/j.phrs.2019.104557] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 11/18/2019] [Accepted: 11/18/2019] [Indexed: 11/16/2022]
Abstract
Deubiquitinase (DUB)-mediated cleavage of ubiquitin chains from substrate proteins plays a crucial role in various cellular processes, such as DNA repair and protein stabilization and localization. DUBs can be classified into five families based on their sequence and structural homology, and the majority belong to the ubiquitin-specific proteinase (USP) family. As one of the USPs, ubiquitin-specific proteinase 5 (USP5) is unique in that it can specifically recognize unanchored (not conjugated to target proteins) polyubiquitin and is essential for maintaining homeostasis of the monoubiquitin pool. USP5 has also been implicated in a wide variety of cellular events. In the present review, we focus on USP5 and provide a comprehensive overview of the current knowledge regarding its structure, physiological roles in multiple cellular events, and pathophysiological roles in relevant diseases, especially cancer. Signaling pathways and emerging pharmacological profiles of USP5 are also introduced, which fully embody the therapeutic potential of USP5 for human diseases ranging from cancer to neurological diseases.
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Affiliation(s)
- Fengling Ning
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Hong Xin
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Junqiu Liu
- Laboratory of Medicinal Plant Biotechnology, College of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, China
| | - Chao Lv
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xin Xu
- Suzhou Institute of Systems Medicine, Center for Systems Medicine, Chinese Academy of Medical Sciences, Suzhou 215123, China
| | - Mengling Wang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Yinhang Wang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Weidong Zhang
- Institute of Interdisciplinary Integrative Medicine Research, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Xuemei Zhang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
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20
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Caution: choice of fixative can influence the visualization of the location of a transcription factor in mammalian cells. Biotechniques 2019; 65:65-69. [PMID: 30091385 DOI: 10.2144/btn-2018-0060] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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21
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Fernandes MHV, Maggioli MF, Otta J, Joshi LR, Lawson S, Diel DG. Senecavirus A 3C Protease Mediates Host Cell Apoptosis Late in Infection. Front Immunol 2019; 10:363. [PMID: 30918505 PMCID: PMC6424860 DOI: 10.3389/fimmu.2019.00363] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 02/12/2019] [Indexed: 12/22/2022] Open
Abstract
Senecavirus A (SVA), an oncolytic picornavirus used for cancer treatment in humans, has recently emerged as a vesicular disease (VD)-causing agent in swine worldwide. Notably, SVA-induced VD is indistinguishable from foot-and-mouth disease (FMD) and other high-consequence VDs of pigs. Here we investigated the role of apoptosis on infection and replication of SVA. Given the critical role of the nuclear factor-kappa B (NF-κB) signaling pathway on modulation of cell death, we first assessed activation of NF-κB during SVA infection. Results here show that while early during infection SVA induces activation of NF-κB, as evidenced by nuclear translocation of NF-κB-p65 and NF-κB-mediated transcription, late in infection a cleaved product corresponding to the C-terminus of NF-κB-p65 is detected in infected cells, resulting in lower NF-κB transcriptional activity. Additionally, we assessed the potential role of SVA 3C protease (3Cpro) in SVA-induced host-cell apoptosis and cleavage of NF-κB-p65. Transient expression of SVA 3Cpro was associated with cleavage of NF-κB-p65 and Poly (ADP-ribose) polymerase (PARP), suggesting its involvement in virus-induced apoptosis. Most importantly, we showed that while cleavage of NF-κB-p65 is secondary to caspase activation, the proteolytic activity of SVA 3Cpro is essential for induction of apoptosis. Experiments using the pan-caspase inhibitor Z-VAD-FMK confirmed the relevance of late apoptosis for SVA infection, indicating that SVA induces apoptosis, presumably, as a mechanism to facilitate virus release and/or spread from infected cells. Together, these results suggest an important role of apoptosis for SVA infection biology.
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Affiliation(s)
| | | | | | | | | | - Diego G. Diel
- Animal Disease Research And Diagnostic Laboratory, Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, SD, United States
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22
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Interferon Regulatory Factor 3-Mediated Signaling Limits Middle-East Respiratory Syndrome (MERS) Coronavirus Propagation in Cells from an Insectivorous Bat. Viruses 2019; 11:v11020152. [PMID: 30781790 PMCID: PMC6410008 DOI: 10.3390/v11020152] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/08/2019] [Accepted: 02/11/2019] [Indexed: 12/14/2022] Open
Abstract
Insectivorous bats are speculated to be ancestral hosts of Middle-East respiratory syndrome (MERS) coronavirus (CoV). MERS-CoV causes disease in humans with thirty-five percent fatality, and has evolved proteins that counteract human antiviral responses. Since bats experimentally infected with MERS-CoV do not develop signs of disease, we tested the hypothesis that MERS-CoV would replicate less efficiently in bat cells than in human cells because of its inability to subvert antiviral responses in bat cells. We infected human and bat (Eptesicus fuscus) cells with MERS-CoV and observed that the virus grew to higher titers in human cells. MERS-CoV also effectively suppressed the antiviral interferon beta (IFNβ) response in human cells, unlike in bat cells. To determine if IRF3, a critical mediator of the interferon response, also regulated the response in bats, we examined the response of IRF3 to poly(I:C), a synthetic analogue of viral double-stranded RNA. We observed that bat IRF3 responded to poly(I:C) by nuclear translocation and post-translational modifications, hallmarks of IRF3 activation. Suppression of IRF3 by small-interfering RNA (siRNA) demonstrated that IRF3 was critical for poly(I:C) and MERS-CoV induced induction of IFNβ in bat cells. Our study demonstrates that innate antiviral signaling in E. fuscus bat cells is resistant to MERS-CoV-mediated subversion.
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23
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Wu YH, Tseng CK, Wu HC, Wei CK, Lin CK, Chen IS, Chang HS, Lee JC. Avocado (Persea americana) fruit extract (2R,4R)-1,2,4-trihydroxyheptadec-16-yne inhibits dengue virus replication via upregulation of NF-κB-dependent induction of antiviral interferon responses. Sci Rep 2019; 9:423. [PMID: 30674997 PMCID: PMC6344542 DOI: 10.1038/s41598-018-36714-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Accepted: 09/28/2018] [Indexed: 01/26/2023] Open
Abstract
Dengue virus (DENV) caused millions of infections around the world annually. Co-infection with different serotypes of DENV is associated with dengue hemorrhagic shock syndrome, leading to an estimate of 50% death rate. No approved therapies are currently available for the treatment of DENV infection. Hence, novel anti-DENV agents are urgently needed for medical therapy. Here we demonstrated that a natural product (2 R,4 R)-1,2,4-trihydroxyheptadec-16-yne (THHY), extracted from avocado (Persea americana) fruit, can inhibit DENV-2 replication in a concentration-dependent manner and efficiently suppresses replication of all DENV serotypes (1–4). We further reveal that the NF-κB-mediated interferon antiviral response contributes to the inhibitory effect of THHY on DENV replication. Using a DENV-infected ICR suckling mouse model, we found that THHY treatment caused an increased survival rate among mice infected with DENV. Collectively, these findings support THHY as a potential agent to control DENV infection.
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Affiliation(s)
- Yu-Hsuan Wu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chin-Kai Tseng
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ho-Cheng Wu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Ku Wei
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chun-Kuang Lin
- Doctoral Degree Program in Marine Biotechnology, College of Marine Sciences, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Ih-Sheng Chen
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hsun-Shuo Chang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.
| | - Jin-Ching Lee
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Research Center for Natural Products and Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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24
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Sarhan M, Land WG, Tonnus W, Hugo CP, Linkermann A. Origin and Consequences of Necroinflammation. Physiol Rev 2018; 98:727-780. [PMID: 29465288 DOI: 10.1152/physrev.00041.2016] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
When cells undergo necrotic cell death in either physiological or pathophysiological settings in vivo, they release highly immunogenic intracellular molecules and organelles into the interstitium and thereby represent the strongest known trigger of the immune system. With our increasing understanding of necrosis as a regulated and genetically determined process (RN, regulated necrosis), necrosis and necroinflammation can be pharmacologically prevented. This review discusses our current knowledge about signaling pathways of necrotic cell death as the origin of necroinflammation. Multiple pathways of RN such as necroptosis, ferroptosis, and pyroptosis have been evolutionary conserved most likely because of their differences in immunogenicity. As the consequence of necrosis, however, all necrotic cells release damage associated molecular patterns (DAMPs) that have been extensively investigated over the last two decades. Analysis of necroinflammation allows characterizing specific signatures for each particular pathway of cell death. While all RN-pathways share the release of DAMPs in general, most of them actively regulate the immune system by the additional expression and/or maturation of either pro- or anti-inflammatory cytokines/chemokines. In addition, DAMPs have been demonstrated to modulate the process of regeneration. For the purpose of better understanding of necroinflammation, we introduce a novel classification of DAMPs in this review to help detect the relative contribution of each RN-pathway to certain physiological and pathophysiological conditions.
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Affiliation(s)
- Maysa Sarhan
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University Vienna , Vienna , Austria ; INSERM UMR_S 1109, Laboratory of Excellence Transplantex, University of Strasbourg , Strasbourg , France ; German Academy of Transplantation Medicine, Munich , Germany ; and Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden , Dresden , Germany
| | - Walter G Land
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University Vienna , Vienna , Austria ; INSERM UMR_S 1109, Laboratory of Excellence Transplantex, University of Strasbourg , Strasbourg , France ; German Academy of Transplantation Medicine, Munich , Germany ; and Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden , Dresden , Germany
| | - Wulf Tonnus
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University Vienna , Vienna , Austria ; INSERM UMR_S 1109, Laboratory of Excellence Transplantex, University of Strasbourg , Strasbourg , France ; German Academy of Transplantation Medicine, Munich , Germany ; and Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden , Dresden , Germany
| | - Christian P Hugo
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University Vienna , Vienna , Austria ; INSERM UMR_S 1109, Laboratory of Excellence Transplantex, University of Strasbourg , Strasbourg , France ; German Academy of Transplantation Medicine, Munich , Germany ; and Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden , Dresden , Germany
| | - Andreas Linkermann
- Division of Nephrology and Dialysis, Department of Medicine III, Medical University Vienna , Vienna , Austria ; INSERM UMR_S 1109, Laboratory of Excellence Transplantex, University of Strasbourg , Strasbourg , France ; German Academy of Transplantation Medicine, Munich , Germany ; and Division of Nephrology, Department of Internal Medicine III, University Hospital Carl Gustav Carus at the Technische Universität Dresden , Dresden , Germany
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Nguyen T, Avci NG, Shin DH, Martinez-Velez N, Jiang H. Tune Up In Situ Autovaccination against Solid Tumors with Oncolytic Viruses. Cancers (Basel) 2018; 10:E171. [PMID: 29857493 PMCID: PMC6025332 DOI: 10.3390/cancers10060171] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/17/2018] [Accepted: 05/29/2018] [Indexed: 02/07/2023] Open
Abstract
With the progress of immunotherapy in cancer, oncolytic viruses (OVs) have attracted more and more attention during the past decade. Due to their cancer-selective and immunogenic properties, OVs are considered ideal candidates to be combined with immunotherapy to increase both specificity and efficacy in cancer treatment. OVs preferentially replicate in and lyse cancer cells, resulting in in situ autovaccination leading to adaptive anti-virus and anti-tumor immunity. The main challenge in OV approaches is how to redirect the host immunity from anti-virus to anti-tumor and optimize the clinical outcome of cancer patients. Here, we summarize the conceptual updates on oncolytic virotherapy and immunotherapy in cancer, and the development of strategies to enhance the virus-mediated anti-tumor immune response, including: (1) arm OVs with cytokines to modulate innate and adaptive immunity; (2) combining OVs with immune checkpoint inhibitors to release T cell inhibition; (3) combining OVs with immune co-stimulators to enhance T cell activation. Future studies need to be enforced on developing strategies to augment the systemic effect on metastasized tumors.
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Affiliation(s)
- Teresa Nguyen
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, 6767 Bertner St., Houston, TX 77030, USA.
| | - Naze G Avci
- Neurosurgery Research, Houston Methodist Research Institute, Houston, TX 77030, USA.
| | - Dong Ho Shin
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, 6767 Bertner St., Houston, TX 77030, USA.
| | | | - Hong Jiang
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, 6767 Bertner St., Houston, TX 77030, USA.
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Liu Q, Wu Y, Qin Y, Hu J, Xie W, Qin FXF, Cui J. Broad and diverse mechanisms used by deubiquitinase family members in regulating the type I interferon signaling pathway during antiviral responses. SCIENCE ADVANCES 2018; 4:eaar2824. [PMID: 29732405 PMCID: PMC5931765 DOI: 10.1126/sciadv.aar2824] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 03/20/2018] [Indexed: 05/16/2023]
Abstract
The innate immune response conferred by type I interferons is essential for host defense against viral infection but needs to be tightly controlled to avoid immunopathology. We performed a systematic functional screening by CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/CRISPR-associated protein 9) knockout and overexpression to investigate the roles of the deubiquitinating enzyme (DUB) family in regulating antiviral immunity. We demonstrated that the expression of a large fraction of DUBs underwent complex temporal alteration, suggesting a dynamic program of feedback regulation. Moreover, we identified previously unrecognized roles of a subset of DUBs, including USP5, USP14, USP22, USP48, USP52, COPS5, and BRCC3, in inhibiting antiviral immunity at various levels. We explored an unexpected mechanism where multiple DUBs, such as USP5 and USP22, form diverse signalosomes with E3 ligases or DUBs to alter the substrates' ubiquitination state instead of directly cleaving the ubiquitin chains on substrates via their protease activity. Altogether, our study has revealed a panoramic view of the broad and dynamic involvement of DUB family proteins in regulating antiviral responses.
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Affiliation(s)
- Qingxiang Liu
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
| | - Yaoxing Wu
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
| | - Yunfei Qin
- Guangdong Provincial Key Laboratory of Liver Disease, Cell-Gene Therapy Translational Medicine Research Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong 510630, China
| | - Jiajia Hu
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
| | - Weihong Xie
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
| | - F. Xiao-Feng Qin
- Center of Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100005, China
- Suzhou Institute of Systems Medicine, Suzhou, Jiangsu 215123, China
- Corresponding author. (J.C.); (F.X.-F.Q.)
| | - Jun Cui
- State Key Laboratory of Oncology in South China, Key Laboratory of Gene Engineering of the Ministry of Education, School of Life Sciences, Sun Yat-sen University, Guangzhou,Guangdong 510006, China
- Corresponding author. (J.C.); (F.X.-F.Q.)
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27
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Portugal R, Leitão A, Martins C. Modulation of type I interferon signaling by African swine fever virus (ASFV) of different virulence L60 and NHV in macrophage host cells. Vet Microbiol 2018. [PMID: 29519508 DOI: 10.1016/j.vetmic.2018.02.008] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
ASFV causes an important disease of domestic swine and wild boar. Currently no vaccine is available, highlighting the necessity to understand ASFV modulation of innate immune responses in natural host cells. With this aim, macrophage cultures enriched in SWC9 and CD163 differentiation markers were infected in parallel with high virulent ASFV/L60 and low virulent ASFV/NHV, the latter lacking MGF 360 and 505/530 genes associated with type I interferon (IFN I) control. IFN I production and signaling were studied after completion of the viral cycles. None of the viruses increased IFN I production in host cells, and accordingly, didn't cause activation of the central mediator of the pathway IRF3. However, upon stimulation by poly:IC treatment during infections, L60 and NHV similarly inhibited IFN I production. This didn't seem to depend on IRF3 modulation since its activation levels were not significantly decreased in L60 infection and were even increased in NHV's, in comparison to stimulated mock infections. The infections didn't evidently activate JAK-STAT pathway mediators STAT1 and STAT2, but did increase expression of interferon stimulated genes (ISGs), to higher levels in NHV than L60 infection. Interestingly, in presence of IFN-α, L60 but not NHV was able to decrease significantly the expression of some of the ISGs tested. Overall, both L60 and NHV were able to inhibit IFN I production in macrophages, through a mechanism not dependent on IRF3 modulation. The high virulent isolate showed however a more effective control of the downstream ISGs expression pathway.
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Affiliation(s)
- Raquel Portugal
- Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.
| | - Alexandre Leitão
- Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.
| | - Carlos Martins
- Centre for Interdisciplinary Research in Animal Health, Faculty of Veterinary Medicine, University of Lisbon, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal.
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28
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Marsili G, Perrotti E, Remoli AL, Acchioni C, Sgarbanti M, Battistini A. IFN Regulatory Factors and Antiviral Innate Immunity: How Viruses Can Get Better. J Interferon Cytokine Res 2018; 36:414-32. [PMID: 27379864 DOI: 10.1089/jir.2016.0002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The interferon regulatory factor (IRF) family consists of transcriptional regulators that exert multifaceted and versatile functions in multiple biological processes. Their crucial role as central mediators in the establishment and execution of host immunity in response to pathogen-derived signals downstream pattern recognition receptors (PRRs) makes IRFs a hallmark of the host antiviral response. They function as hub molecules at the crossroad of different signaling pathways for the induction of interferon (IFN) and inflammatory cytokines, as well as of antiviral and immunomodulatory genes even in an IFN-independent manner. By regulating the development and activity of immune cells, IRFs also function as a bridge between innate and adaptive responses. As such, IRFs represent attractive and compulsive targets in viral strategies to subvert antiviral signaling. In this study, we discuss current knowledge on the wide array of strategies put in place by pathogenic viruses to evade, subvert, and/or hijack these essential components of host antiviral immunity.
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Affiliation(s)
- Giulia Marsili
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità , Rome, Italy
| | - Edvige Perrotti
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità , Rome, Italy
| | - Anna Lisa Remoli
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità , Rome, Italy
| | - Chiara Acchioni
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità , Rome, Italy
| | - Marco Sgarbanti
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità , Rome, Italy
| | - Angela Battistini
- Department of Infectious, Parasitic and Immune-Mediated Diseases, Istituto Superiore di Sanità , Rome, Italy
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Abstract
PURPOSE OF REVIEW HIV-1 infection is of global importance, and still incurs substantial morbidity and mortality. Although major pharmacologic advances over the past two decades have resulted in remarkable HIV-1 control, a cure is still forthcoming. One approach to a cure is to exploit natural mechanisms by which the host restricts HIV-1. Herein, we review past and recent discoveries of HIV-1 restriction factors, a diverse set of host proteins that limit HIV-1 replication at multiple levels, including entry, reverse transcription, integration, translation of viral proteins, and packaging and release of virions. RECENT FINDINGS Recent studies of intracellular HIV-1 restriction have offered unique molecular insights into HIV-1 replication and biology. Studies have revealed insights of how restriction factors drive HIV-1 evolution. Although HIV-1 restriction factors only partially control the virus, their importance is underscored by their effect on HIV-1 evolution and adaptation. The list of host restriction factors that control HIV-1 infection is likely to expand with future discoveries. A deeper understanding of the molecular mechanisms of regulation by these factors will uncover new targets for therapeutic control of HIV-1 infection.
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Affiliation(s)
- Mary Soliman
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Geetha Srikrishna
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - Ashwin Balagopal
- Division of Infectious Diseases, Department of Medicine, Johns Hopkins University, Baltimore, MD, USA.
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Lafont M, Petton B, Vergnes A, Pauletto M, Segarra A, Gourbal B, Montagnani C. Long-lasting antiviral innate immune priming in the Lophotrochozoan Pacific oyster, Crassostrea gigas. Sci Rep 2017; 7:13143. [PMID: 29030632 PMCID: PMC5640609 DOI: 10.1038/s41598-017-13564-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 09/25/2017] [Indexed: 12/16/2022] Open
Abstract
In the last decade, a paradigm shift has emerged in comparative immunology. Invertebrates can no longer be considered to be devoid of specific recognition and immune memory. However, we still lack a comprehensive view of these phenomena and their molecular mechanisms across phyla, especially in terms of duration, specificity, and efficiency in a natural context. In this study, we focused on a Lophotrochozoan/virus interaction, as antiviral priming is mostly overlooked in molluscs. Juvenile Crassostrea gigas oysters experience reoccurring mass mortalities events from Ostreid herpes virus 1 with no existing therapeutic treatment. Our results showed that various nucleic acid injections can prime oysters to trigger an antiviral state ultimately protecting them against a subsequent viral infection. Focusing on poly(I:C) as elicitor, we evidenced that it protected from an environmental infection, by mitigating viral replication. That protection seemed to induce a specific antiviral response as poly(I:C) fails to protect against a pathogenic bacteria. Finally, we showed that this phenomenon was long-lasting, persisting for at least 5 months thus suggesting for the first time the existence of innate immune memory in this invertebrate species. This study strengthens the emerging hypotheses about the broad conservation of innate immune priming and memory mechanisms in Lophotrochozoans.
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Affiliation(s)
- Maxime Lafont
- Ifremer, IHPE, UMR 5244, Univ. Perpignan Via Domitia, CNRS, Univ. Montpellier, F-34095, Montpellier, France.,Univ. Perpignan Via Domitia, IHPE UMR 5244, CNRS, IFREMER, Univ. Montpellier, F-66860, Perpignan, France
| | - Bruno Petton
- Ifremer, LEMAR UMR6539, F-29840, Argenton-en-Landunvez, France
| | - Agnès Vergnes
- Ifremer, IHPE, UMR 5244, Univ. Perpignan Via Domitia, CNRS, Univ. Montpellier, F-34095, Montpellier, France
| | - Marianna Pauletto
- Department of Comparative Biomedicine and Food Science. University of Padova, Viale dell'Università 16, 35020, Legnaro (PD), Italy
| | - Amélie Segarra
- Univ. Brest Occidentale, LEMAR UMR 6539 CNRS/UBO/IRD/Ifremer, Institut Universitaire Européen de la Mer, F-29280, Plouzané, France
| | - Benjamin Gourbal
- Univ. Perpignan Via Domitia, IHPE UMR 5244, CNRS, IFREMER, Univ. Montpellier, F-66860, Perpignan, France
| | - Caroline Montagnani
- Ifremer, IHPE, UMR 5244, Univ. Perpignan Via Domitia, CNRS, Univ. Montpellier, F-34095, Montpellier, France.
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31
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Ireton RC, Wilkins C, Gale M. RNA PAMPs as Molecular Tools for Evaluating RIG-I Function in Innate Immunity. Methods Mol Biol 2017; 1656:119-129. [PMID: 28808965 DOI: 10.1007/978-1-4939-7237-1_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Pathogen recognition receptors (PRR)s and their cognate pathogen-associated molecular pattern (PAMP) represent the basis of innate immune activation and immune response induction driven by the host-pathogen interaction that occurs during microbial infection in humans and other animals. For RNA virus infection such as hepatitis C virus (HCV) and others, specific motifs within viral RNA mark it as nonself and visible to the host as a PAMP through interaction with RIG-I-like receptors including retinoic inducible gene-I (RIG-I). Here, we present methods for producing and using HCV PAMP RNA as a molecular tool to study RIG-I and its signaling pathway, both in vitro and in vivo, in innate immune regulation.
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Affiliation(s)
- Renee C Ireton
- Department of Immunology, Center for Innate Immunity and Immune Disease, University of Washington School of Medicine, E383, 750 Republican Street, Seattle, WA, 98109, USA
| | - Courtney Wilkins
- Department of Immunology, Center for Innate Immunity and Immune Disease, University of Washington School of Medicine, E383, 750 Republican Street, Seattle, WA, 98109, USA
| | - Michael Gale
- Department of Immunology, Center for Innate Immunity and Immune Disease, University of Washington School of Medicine, E383, 750 Republican Street, Seattle, WA, 98109, USA.
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32
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Hare D, Collins S, Cuddington B, Mossman K. The Importance of Physiologically Relevant Cell Lines for Studying Virus-Host Interactions. Viruses 2016; 8:v8110297. [PMID: 27809273 PMCID: PMC5127011 DOI: 10.3390/v8110297] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 10/13/2016] [Accepted: 10/26/2016] [Indexed: 12/11/2022] Open
Abstract
Viruses interact intimately with the host cell at nearly every stage of replication, and the cell model that is chosen to study virus infection is critically important. Although primary cells reflect the phenotype of healthy cells in vivo better than cell lines, their limited lifespan makes experimental manipulation challenging. However, many tumor-derived and artificially immortalized cell lines have defects in induction of interferon-stimulated genes and other antiviral defenses. These defects can affect virus replication, especially when cells are infected at lower, more physiologically relevant, multiplicities of infection. Understanding the selective pressures and mechanisms underlying the loss of innate signaling pathways is helpful to choose immortalized cell lines without impaired antiviral defense. We describe the trials and tribulations we encountered while searching for an immortalized cell line with intact innate signaling, and how directed immortalization of primary cells avoids many of the pitfalls of spontaneous immortalization.
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Affiliation(s)
- David Hare
- Pathology and Molecular Medicine, McMaster University, 1280 Main Str. West, Hamilton, ON L8S 4L8, Canada.
| | - Susan Collins
- Pathology and Molecular Medicine, McMaster University, 1280 Main Str. West, Hamilton, ON L8S 4L8, Canada.
| | - Breanne Cuddington
- Pathology and Molecular Medicine, McMaster University, 1280 Main Str. West, Hamilton, ON L8S 4L8, Canada.
| | - Karen Mossman
- Pathology and Molecular Medicine, McMaster University, 1280 Main Str. West, Hamilton, ON L8S 4L8, Canada.
- Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Str. West, Hamilton, ON L8S 4L8, Canada.
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33
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Candel S, Tyrkalska SD, García-Moreno D, Meseguer J, Mulero V. Identification of Evolutionarily Conserved Md1 Splice Variants That Regulate Innate Immunity through Differential Induction of NF-кB. THE JOURNAL OF IMMUNOLOGY 2016; 197:1379-1388. [DOI: 10.4049/jimmunol.1502052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/30/2023]
Abstract
Abstract
Although in mammals the TLR4/myeloid differentiation factor (MD)2/CD14 complex is responsible for the recognition of bacterial LPS, and it is known that the RP105/MD1 complex negatively regulates TLR4 signaling, the evolutionary history of LPS recognition remains enigmatic. Thus, zebrafish has orthologs of mammalian TLR4 (Tlr4a and Tlr4b), RP105, and MD1, but MD2 and CD14 seem to be absent from all fish genomes available to date. In addition, and to make the story more intriguing, zebrafish Tlr4a and Tlr4b do not recognize LPS, whereas the zebrafish Rp105/Md1 complex unexpectedly participates in the regulation of innate immunity and viral resistance. In this work, we report the identification of two novel splice variants of Md1, which are expressed at similar levels as full-length Md1 in the main immune-related organs of zebrafish and are highly induced upon viral infection. One of these splice variants, which is also expressed by mouse macrophages, lacks three conserved cysteine residues that have been shown to form disulfide bonds that are crucial for the three-dimensional structure of the MD-2–related lipid recognition domain of Md1. Functional studies in zebrafish demonstrate that this evolutionarily conserved splice variant shows higher antiviral activity than full-length Md1, but reduced proinflammatory activity, due to an impaired ability to activate the master regulator of inflammation, NF-κB. These results uncover a previously unappreciated evolutionarily conserved Md1 splice variant with important functions in the regulation of innate immunity and the antiviral response in zebrafish, and point to the need for additional functional studies in mammals on this little explored molecule.
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Affiliation(s)
- Sergio Candel
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria-Arrixaca, 30100 Murcia, Spain
| | - Sylwia D. Tyrkalska
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria-Arrixaca, 30100 Murcia, Spain
| | - Diana García-Moreno
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria-Arrixaca, 30100 Murcia, Spain
| | - José Meseguer
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria-Arrixaca, 30100 Murcia, Spain
| | - Victoriano Mulero
- Departamento de Biología Celular e Histología, Facultad de Biología, Universidad de Murcia, Instituto Murciano de Investigación Biosanitaria-Arrixaca, 30100 Murcia, Spain
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34
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Meng F, Zhou R, Wu S, Zhang Q, Jin Q, Zhou Y, Plouffe SW, Liu S, Song H, Xia Z, Zhao B, Ye S, Feng XH, Guan KL, Zou J, Xu P. Mst1 shuts off cytosolic antiviral defense through IRF3 phosphorylation. Genes Dev 2016; 30:1086-100. [PMID: 27125670 PMCID: PMC4863739 DOI: 10.1101/gad.277533.116] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 04/01/2016] [Indexed: 12/25/2022]
Abstract
Here, Meng et al. investigated how interferon regulatory factor 3 (IRF3) activation, a key signal mediator/transcriptional factor of the antiviral-sensing pathway, is regulated. They demonstrate that Mst1, a stress response kinase, represses cytosolic antiviral sensing and defense through the repression of RNA virus-induced activation of TBK1 and interference with the IRF3 homodimerization and chromatin binding via direct phosphorylation of IRF3 Thr253 and Thr75 residues. Cytosolic RNA/DNA sensing elicits primary defense against viral pathogens. Interferon regulatory factor 3 (IRF3), a key signal mediator/transcriptional factor of the antiviral-sensing pathway, is indispensible for interferon production and antiviral defense. However, how the status of IRF3 activation is controlled remains elusive. Through a functional screen of the human kinome, we found that mammalian sterile 20-like kinase 1 (Mst1), but not Mst2, profoundly inhibited cytosolic nucleic acid sensing. Mst1 associated with IRF3 and directly phosphorylated IRF3 at Thr75 and Thr253. This Mst1-mediated phosphorylation abolished activated IRF3 homodimerization, its occupancy on chromatin, and subsequent IRF3-mediated transcriptional responses. In addition, Mst1 also impeded virus-induced activation of TANK-binding kinase 1 (TBK1), further attenuating IRF3 activation. As a result, Mst1 depletion or ablation enabled an enhanced antiviral response and defense in cells and mice. Therefore, the identification of Mst1 as a novel physiological negative regulator of IRF3 activation provides mechanistic insights into innate antiviral defense and potential antiviral prevention strategies.
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Affiliation(s)
- Fansen Meng
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Ruyuan Zhou
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Shiying Wu
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Qian Zhang
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Qiuheng Jin
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Yao Zhou
- Eye Center of the Second Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou 310058, China; Institute of Translational Medicine, Zhejiang University, Hangzhou 310058, China
| | - Steven W Plouffe
- Department of Pharmacology, Moores Cancer Center, University of California at San Diego, La Jolla, California 92093, USA
| | - Shengduo Liu
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Hai Song
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Zongping Xia
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Bin Zhao
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Sheng Ye
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
| | - Xin-Hua Feng
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China; Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, USA; Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Kun-Liang Guan
- Department of Pharmacology, Moores Cancer Center, University of California at San Diego, La Jolla, California 92093, USA
| | - Jian Zou
- Eye Center of the Second Affiliated Hospital School of Medicine, Zhejiang University, Hangzhou 310058, China; Institute of Translational Medicine, Zhejiang University, Hangzhou 310058, China
| | - Pinglong Xu
- Life Sciences Institute, Zhejiang University, Hangzhou 310058, China; Innovation Center for Cell Signaling Network, Zhejiang University, Hangzhou 310058, China
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35
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TRIM9 short isoform preferentially promotes DNA and RNA virus-induced production of type I interferon by recruiting GSK3β to TBK1. Cell Res 2016; 26:613-28. [PMID: 26915459 DOI: 10.1038/cr.2016.27] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 10/16/2015] [Accepted: 12/02/2015] [Indexed: 12/18/2022] Open
Abstract
Type I interferon (IFN) is an important component of antiviral innate immune signaling mediated by viral DNA and RNA recognition by the DNA sensor cGAS and RNA sensors RIG-I and MDA5. Activation of these DNA and RNA sensors leads to the recruitment of STING and MAVS, respectively, and converges on TANK-binding kinase 1 (TBK1) signaling for subsequent phosphorylation of IFN regulatory factor 3 (IRF3). However, the mechanisms that control TBK1 activation are still poorly defined. Here, we identify tripartite motif 9 short isoform (TRIM9s) as a positive regulator in type I IFN signaling. Upon viral infection, TRIM9s undergoes Lys-63-linked auto-polyubiquitination and serves as a platform to bridge GSK3β to TBK1, leading to the activation of IRF3 signaling. Interestingly, we found that TRIM9s selectively inhibits the production of pro-inflammatory cytokines, but enhances the expression of type I IFNs as well as IFN-stimulated genes, in response to viral infection. Our findings reveal novel dual functions of TRIM9s in antiviral immunity, which serve to balance pro-inflammatory response and production of type I IFNs.
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Membrane Perturbation-Associated Ca2+ Signaling and Incoming Genome Sensing Are Required for the Host Response to Low-Level Enveloped Virus Particle Entry. J Virol 2015; 90:3018-27. [PMID: 26719279 DOI: 10.1128/jvi.02642-15] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 12/23/2015] [Indexed: 12/25/2022] Open
Abstract
UNLABELLED The type I interferon (IFN) response is an important aspect of innate antiviral defense, and the transcription factor IRF3 plays an important role in its induction. Membrane perturbation during fusion, a necessary step for enveloped virus particle entry, appears sufficient to induce transcription of a subset of IFN-stimulated genes (ISGs) in an IRF3-dependent, IFN-independent fashion. IRF3 is emerging as a central node in host cell stress responses, although it remains unclear how different forms of stress activate IRF3. Here, we investigated the minimum number of Sendai virus (SeV) and human cytomegalovirus (HCMV) particles required to activate IRF3 and trigger an antiviral response. We found that Ca(2+) signaling associated with membrane perturbation and recognition of incoming viral genomes by cytosolic nucleic acid receptors are required to activate IRF3 in response to fewer than 13 particles of SeV and 84 particles of HCMV per cell. Moreover, it appears that Ca(2+) signaling is important for activation of STING and IRF3 following HCMV particle entry, suggesting that Ca(2+) signaling sensitizes cells to recognize genomes within incoming virus particles. To our knowledge, this is the first evidence that cytosolic nucleic acid sensors recognize genomes within incoming virus particles prior to virus replication. These studies highlight the exquisite sensitivity of the cellular response to low-level stimuli and suggest that virus particle entry is sensed as a stress signal. IMPORTANCE The mechanism by which replicating viruses trigger IRF3 activation and type I IFN induction through the generation and accumulation of viral pathogen-associated molecular patterns has been well characterized. However, the mechanism by which enveloped virus particle entry mediates a stress response, leading to IRF3 activation and the IFN-independent response, remained elusive. Here, we find that Ca(2+) signaling associated with membrane perturbation appears to sensitize cells to recognize genomes within incoming virus particles. To our knowledge, this is the first study to show that cytosolic receptors recognize genomes within incoming virus particles prior to virus replication. These findings not only highlight the sensitivity of cellular responses to low-level virus particle stimulation, but provide important insights into how nonreplicating virus vectors or synthetic lipid-based carriers used as clinical delivery vehicles activate innate immune responses.
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Abstract
Use of highly pure antigens to improve vaccine safety has led to reduced vaccine immunogenicity and efficacy. This has led to the need to use adjuvants to improve vaccine immunogenicity. The ideal adjuvant should maximize vaccine immunogenicity without compromising tolerability or safety. Unfortunately, adjuvant research has lagged behind other vaccine areas such as antigen discovery, with the consequence that only a very limited number of adjuvants based on aluminium salts, monophosphoryl lipid A and oil emulsions are currently approved for human use. Recent strategic initiatives to support adjuvant development by the National Institutes of Health should translate into greater adjuvant choices in the future. Mechanistic studies have been valuable for better understanding of adjuvant action, but mechanisms of adjuvant toxicity are less well understood. The inflammatory or danger-signal model of adjuvant action implies that increased vaccine reactogenicity is the inevitable price for improved immunogenicity. Hence, adjuvant reactogenicity may be avoidable only if it is possible to separate inflammation from adjuvant action. The biggest remaining challenge in the adjuvant field is to decipher the potential relationship between adjuvants and rare vaccine adverse reactions, such as narcolepsy, macrophagic myofasciitis or Alzheimer's disease. While existing adjuvants based on aluminium salts have a strong safety record, there are ongoing needs for new adjuvants and more intensive research into adjuvants and their effects.
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Affiliation(s)
- Nikolai Petrovsky
- Department of Endocrinology and Diabetes, Flinders University, Adelaide, SA, 5042, Australia.
- Vaxine Pty Ltd, Adelaide, SA, Australia.
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Land WG. The Role of Damage-Associated Molecular Patterns (DAMPs) in Human Diseases: Part II: DAMPs as diagnostics, prognostics and therapeutics in clinical medicine. Sultan Qaboos Univ Med J 2015; 15:e157-e170. [PMID: 26052447 PMCID: PMC4450777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 10/05/2014] [Accepted: 10/30/2014] [Indexed: 06/04/2023] Open
Abstract
This article is the second part of a review that addresses the role of damage-associated molecular patterns (DAMPs) in human diseases by presenting examples of traumatic (systemic inflammatory response syndrome), cardiovascular (myocardial infarction), metabolic (type 2 diabetes mellitus), neurodegenerative (Alzheimer's disease), malignant and infectious diseases. Various DAMPs are involved in the pathogenesis of all these diseases as they activate innate immune machineries including the unfolded protein response and inflammasomes. These subsequently promote sterile autoinflammation accompanied, at least in part, by subsequent adaptive autoimmune processes. This review article discusses the future role of DAMPs in routine practical medicine by highlighting the possibility of harnessing and deploying DAMPs either as biomarkers for the appropriate diagnosis and prognosis of diseases, as therapeutics in the treatment of tumours or as vaccine adjuncts for the prophylaxis of infections. In addition, this article examines the potential for developing strategies aimed at mitigating DAMPs-mediated hyperinflammatory responses, such as those seen in systemic inflammatory response syndrome associated with multiple organ failure.
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Affiliation(s)
- Walter G Land
- Laboratoire d'ImmunoRhumatologie Moléculaire, INSERM UMR_S1109, LabEx Transplantex, Centre de Recherche d'Immunologie et d'Hématologie, Université de Strasbourg, Strasbourg, France, E-mail:
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Gralinski LE, Baric RS. Molecular pathology of emerging coronavirus infections. J Pathol 2015; 235:185-95. [PMID: 25270030 PMCID: PMC4267971 DOI: 10.1002/path.4454] [Citation(s) in RCA: 230] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 09/25/2014] [Indexed: 12/11/2022]
Abstract
Respiratory viruses can cause a wide spectrum of pulmonary diseases, ranging from mild, upper respiratory tract infections to severe and life-threatening lower respiratory tract infections, including the development of acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). Viral clearance and subsequent recovery from infection require activation of an effective host immune response; however, many immune effector cells may also cause injury to host tissues. Severe acute respiratory syndrome (SARS) coronavirus and Middle East respiratory syndrome (MERS) coronavirus cause severe infection of the lower respiratory tract, with 10% and 35% overall mortality rates, respectively; however, >50% mortality rates are seen in the aged and immunosuppressed populations. While these viruses are susceptible to interferon treatment in vitro, they both encode numerous genes that allow for successful evasion of the host immune system until after high virus titres have been achieved. In this review, we discuss the importance of the innate immune response and the development of lung pathology following human coronavirus infection.
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Affiliation(s)
- Lisa E Gralinski
- Department of Epidemiology, University of North Carolina, Chapel Hill, NC, USA
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Xu P, Bailey-Bucktrout S, Xi Y, Xu D, Du D, Zhang Q, Xiang W, Liu J, Melton A, Sheppard D, Chapman HA, Bluestone JA, Derynck R. Innate antiviral host defense attenuates TGF-β function through IRF3-mediated suppression of Smad signaling. Mol Cell 2014; 56:723-37. [PMID: 25526531 PMCID: PMC4273650 DOI: 10.1016/j.molcel.2014.11.027] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 10/02/2014] [Accepted: 11/21/2014] [Indexed: 02/06/2023]
Abstract
TGF-β signaling is essential in many processes, including immune surveillance, and its dysregulation controls various diseases, including cancer, fibrosis, and inflammation. Studying the innate host defense, which functions in most cell types, we found that RLR signaling represses TGF-β responses. This regulation is mediated by activated IRF3, using a dual mechanism of IRF3-directed suppression. Activated IRF3 interacts with Smad3, thus inhibiting TGF-β-induced Smad3 activation and, in the nucleus, disrupts functional Smad3 transcription complexes by competing with coregulators. Consequently, IRF3 activation by innate antiviral signaling represses TGF-β-induced growth inhibition, gene regulation and epithelial-mesenchymal transition, and the generation of Treg effector lymphocytes from naive CD4(+) lymphocytes. Conversely, silencing IRF3 expression enhances epithelial-mesenchymal transition, TGF-β-induced Treg cell differentiation upon virus infection, and Treg cell generation in vivo. We present a mechanism of regulation of TGF-β signaling by the antiviral defense, with evidence for its role in immune tolerance and cancer cell behavior.
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Affiliation(s)
- Pinglong Xu
- Life Sciences Institute and Innovation Center for Cell Biology, Zhejiang University, Hangzhou, Zhejiang 310058, China; Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Cell and Tissue Biology, University of California at San Francisco, CA 94143, USA.
| | - Samantha Bailey-Bucktrout
- Diabetes Center and the Department of Medicine, University of California at San Francisco, CA 94143, USA
| | - Ying Xi
- Department of Medicine and Cardiovascular Research Institute, University of California at San Francisco, CA 94143, USA
| | - Daqi Xu
- Diabetes Center and the Department of Medicine, University of California at San Francisco, CA 94143, USA
| | - Dan Du
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Cell and Tissue Biology, University of California at San Francisco, CA 94143, USA
| | - Qian Zhang
- Life Sciences Institute and Innovation Center for Cell Biology, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Weiwen Xiang
- Life Sciences Institute and Innovation Center for Cell Biology, Zhejiang University, Hangzhou, Zhejiang 310058, China
| | - Jianming Liu
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Cell and Tissue Biology, University of California at San Francisco, CA 94143, USA
| | - Andrew Melton
- Lung Biology Center and the Department of Medicine, University of California at San Francisco, CA 94143, USA
| | - Dean Sheppard
- Lung Biology Center and the Department of Medicine, University of California at San Francisco, CA 94143, USA
| | - Harold A Chapman
- Department of Medicine and Cardiovascular Research Institute, University of California at San Francisco, CA 94143, USA
| | - Jeffrey A Bluestone
- Diabetes Center and the Department of Medicine, University of California at San Francisco, CA 94143, USA
| | - Rik Derynck
- Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, Department of Cell and Tissue Biology, University of California at San Francisco, CA 94143, USA.
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