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Khaleque MA, Kim JH, Hwang BJ, Kang JK, Quan M, Kim YY. Role of Necroptosis in Intervertebral Disc Degeneration. Int J Mol Sci 2023; 24:15292. [PMID: 37894970 PMCID: PMC10607531 DOI: 10.3390/ijms242015292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 10/06/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
Apoptosis has historically been considered the primary form of programmed cell death (PCD) and is responsible for regulating cellular processes during development, homeostasis, and disease. Conversely, necrosis was considered uncontrolled and unregulated. However, recent evidence has unveiled the significance of necroptosis, a regulated form of necrosis, as an important mechanism of PCD alongside apoptosis. The activation of necroptosis leads to cellular membrane disruption, inflammation, and vascularization. This process is crucial in various pathological conditions, including intervertebral disc degeneration (IVDD), neurodegeneration, inflammatory diseases, multiple cancers, and kidney injury. In recent years, extensive research efforts have shed light on the molecular regulation of the necroptotic pathway. Various stimuli trigger necroptosis, and its regulation involves the activation of specific proteins such as receptor-interacting protein kinase 1 (RIPK1), RIPK3, and the mixed lineage kinase domain-like (MLKL) pseudokinase. Understanding the intricate mechanisms governing necroptosis holds great promise for developing novel therapeutic interventions targeting necroptosis-associated IVDD. The objective of this review is to contribute to the growing body of scientific knowledge in this area by providing a comprehensive overview of necroptosis and its association with IVDD. Ultimately, these understandings will allow the development of innovative drugs that can modulate the necroptotic pathway, offering new therapeutic avenues for individuals suffering from necroptosis.
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Affiliation(s)
| | | | | | | | | | - Young-Yul Kim
- Department of Orthopedic Surgery, Daejeon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Daejeon 34943, Republic of Korea; (M.A.K.); (J.-H.K.); (B.-J.H.); (J.-K.K.); (M.Q.)
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Karki R, Kanneganti TD. PANoptosome signaling and therapeutic implications in infection: central role for ZBP1 to activate the inflammasome and PANoptosis. Curr Opin Immunol 2023; 83:102348. [PMID: 37267644 PMCID: PMC10524556 DOI: 10.1016/j.coi.2023.102348] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 04/14/2023] [Accepted: 05/03/2023] [Indexed: 06/04/2023]
Abstract
The innate immune response provides the first line of defense against infection and disease. Regulated cell death (RCD) is a key component of innate immune activation, and RCD must be tightly controlled to clear pathogens while preventing excess inflammation. Recent studies have highlighted a central role for the innate immune sensor Z-DNA-binding protein 1 (ZBP1) as an activator of a form of inflammatory RCD called PANoptosis, which is regulated by a multifaceted cell death complex called the PANoptosome. In response to influenza A virus infection, ZBP1 activates the nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing protein 3 (NLRP3) inflammasome, which then acts as an integral component of the ZBP1-PANoptosome to drive inflammatory cell death, PANoptosis. In this context, the NLRP3 inflammasome is critical for caspase-1 activation and proinflammatory cytokine interleukin (IL)-1β and IL-18 maturation, but dispensable for cell death due to functional redundancies between PANoptosome molecules. Similarly, ZBP1 is also central to the absent in melanoma 2 (AIM2)-PANoptosome; this PANoptosome forms in response to Francisella novicida and herpes simplex virus 1 infection and incorporates the AIM2 inflammasome as an integral component. In this review, we will discuss the critical roles of ZBP1 in mediating innate immune responses through inflammasomes, PANoptosomes, and PANoptosis during infection. An improved understanding of the molecular mechanisms of innate immunity and cell death will be essential for the development of targeted modalities that can improve patient outcomes by mitigating severe disease.
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Affiliation(s)
- Rajendra Karki
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA; Department of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea.
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Mitroshina EV, Saviuk M, Vedunova MV. Necroptosis in CNS diseases: Focus on astrocytes. Front Aging Neurosci 2023; 14:1016053. [PMID: 36778591 PMCID: PMC9911465 DOI: 10.3389/fnagi.2022.1016053] [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: 08/10/2022] [Accepted: 12/28/2022] [Indexed: 01/28/2023] Open
Abstract
In the last few years, necroptosis, a recently described type of cell death, has been reported to play an important role in the development of various brain pathologies. Necroptosis is a cell death mechanism that has morphological characteristics similar to necrosis but is mediated by fundamentally different molecular pathways. Necroptosis is initiated by signaling through the interaction of RIP1/RIP3/MLKL proteins (receptor-interacting protein kinase 1/receptor-interacting protein kinase 3/mixed lineage kinase domain-like protein). RIPK1 kinase is usually inactive under physiological conditions. It is activated by stimulation of death receptors (TNFR1, TNFR2, TLR3, and 4, Fas-ligand) by external signals. Phosphorylation of RIPK1 results in the formation of its complex with death receptors. Further, complexes with the second member of the RIP3 and MLKL cascade appear, and the necroptosome is formed. There is enough evidence that necroptosis plays an important role in the pathogenesis of brain ischemia and neurodegenerative diseases. In recent years, a point of view that both neurons and glial cells can play a key role in the development of the central nervous system (CNS) pathologies finds more and more confirmation. Astrocytes play complex roles during neurodegeneration and ischemic brain damage initiating both impair and protective processes. However, the cellular and molecular mechanisms that induce pathogenic activity of astrocytes remain veiled. In this review, we consider these processes in terms of the initiation of necroptosis. On the other hand, it is important to remember that like other types of programmed cell death, necroptosis plays an important role for the organism, as it induces a strong immune response and is involved in the control of cancerogenesis. In this review, we provide an overview of the complex role of necroptosis as an important pathogenetic component of neuronal and astrocyte death in neurodegenerative diseases, epileptogenesis, and ischemic brain damage.
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Abstract
Herpes simplex virus (HSV)-1 and HSV-2 are ubiquitous human pathogens that infect keratinized epithelial surfaces and establish lifelong latent infection in sensory neurons of the peripheral nervous system. HSV-1 causes oral cold sores, and HSV-2 causes genital lesions characterized by recurrence at the site of the initial infection. In multicellular organisms, cell death plays a pivotal role in host defense by eliminating pathogen-infected cells. Apoptosis and necrosis are readily distinguished types of cell death. Apoptosis, the main form of programmed cell death, depends on the activity of certain caspases, a family of cysteine proteases. Necroptosis, a regulated form of necrosis that is unleashed when caspase activity is compromised, requires the activation of receptor-interacting protein (RIP) kinase 3 (RIPK3) through its interaction with other RIP homotypic interaction motif (RHIM)-containing proteins such as RIPK1. To ensure lifelong infection in the host, HSV carries out sophisticated molecular strategies to evade host cell death responses during viral infection. HSV-1 is a well-characterized pathogen that encodes potent viral inhibitors that modulate both caspase activation in the apoptosis pathway and RIPK3 activation in the necroptosis pathway in a dramatic, species-specific fashion. The viral UL39-encoded viral protein ICP6, the large subunit of the virus-encoded ribonucleotide reductase, functions as a suppressor of both caspase-8 and RHIM-dependent RIPK3 activities in the natural human host. In contrast, ICP6 RHIM-mediated recruitment of RIPK3 in the nonnatural mouse host drives the direct activation of necroptosis. This chapter provides an overview of the current state of the knowledge on molecular interactions between HSV-1 viral proteins and host cell death pathways and highlights how HSV-1 manipulates cell death signals for the benefit of viral propagation.
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Affiliation(s)
- Sudan He
- Center of Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100005, China.
- Suzhou Institute of Systems Medicine, Suzhou, 215123, China.
| | - Jiahuai Han
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, China.
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Abstract
Necroptosis, or programmed necrosis, is an inflammatory form of cell death with important functions in host defense against pathogens and tissue homeostasis. The four cytosolic receptor-interacting protein kinase homotypic interaction motif (RHIM)-containing adaptor proteins RIPK1, RIPK3, TRIF (also known as TICAM1) and ZBP1 mediate necroptosis induction in response to infection and cytokine or innate immune receptor activation. Activation of the RHIM adaptors leads to phosphorylation, oligomerization and membrane targeting of the necroptosis effector protein mixed lineage kinase domain-like (MLKL). Active MLKL induces lesions on the plasma membrane, leading to the release of pro-inflammatory damage-associated molecular patterns (DAMPs). Thus, activities of the RHIM adaptors and MLKL are tightly regulated by posttranslational modifications to prevent inadvertent release of immunogenic contents. In this Cell Science at a Glance article and the accompanying poster, we provide an overview of the regulatory mechanisms of necroptosis and its biological functions in tissue homeostasis, pathogen infection and other inflammatory diseases.
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Affiliation(s)
- Kidong Kang
- Department of Immunology, Duke University School of Medicine, DUMC 3010, Durham, NC 27710, USA
| | - Christa Park
- Immunology and Microbiology Program, University of Massachusetts Chan Medical School, Worcester, MA 01605, USA
| | - Francis Ka-Ming Chan
- Department of Immunology, Duke University School of Medicine, DUMC 3010, Durham, NC 27710, USA
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Zhang G, Wang J, Zhao Z, Xin T, Fan X, Shen Q, Raheem A, Lee CR, Jiang H, Ding J. Regulated necrosis, a proinflammatory cell death, potentially counteracts pathogenic infections. Cell Death Dis 2022; 13:637. [PMID: 35869043 PMCID: PMC9307826 DOI: 10.1038/s41419-022-05066-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 02/07/2023]
Abstract
Since the discovery of cell apoptosis, other gene-regulated cell deaths are gradually appreciated, including pyroptosis, ferroptosis, and necroptosis. Necroptosis is, so far, one of the best-characterized regulated necrosis. In response to diverse stimuli (death receptor or toll-like receptor stimulation, pathogenic infection, or other factors), necroptosis is initiated and precisely regulated by the receptor-interacting protein kinase 3 (RIPK3) with the involvement of its partners (RIPK1, TRIF, DAI, or others), ultimately leading to the activation of its downstream substrate, mixed lineage kinase domain-like (MLKL). Necroptosis plays a significant role in the host's defense against pathogenic infections. Although much has been recognized regarding modulatory mechanisms of necroptosis during pathogenic infection, the exact role of necroptosis at different stages of infectious diseases is still being unveiled, e.g., how and when pathogens utilize or evade necroptosis to facilitate their invasion and how hosts manipulate necroptosis to counteract these detrimental effects brought by pathogenic infections and further eliminate the encroaching pathogens. In this review, we summarize and discuss the recent progress in the role of necroptosis during a series of viral, bacterial, and parasitic infections with zoonotic potentials, aiming to provide references and directions for the prevention and control of infectious diseases of both human and animals.
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Affiliation(s)
- Guangzhi Zhang
- grid.464332.4Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Jinyong Wang
- grid.508381.70000 0004 0647 272XShenzhen Bay Laboratory, Institute of Infectious Diseases, Shenzhen, 518000 China ,grid.258164.c0000 0004 1790 3548Institute of Respiratory Diseases, Shenzhen People’s Hospital, The Second Clinical Medical College, Jinan University, Shenzhen, 518020 Guangdong China
| | - Zhanran Zhao
- grid.47840.3f0000 0001 2181 7878Department of Molecular and Cell Biology and Cancer Research Laboratory, University of California, Berkeley, CA 94720-3200 USA
| | - Ting Xin
- grid.464332.4Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Xuezheng Fan
- grid.464332.4Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Qingchun Shen
- grid.464332.4Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Abdul Raheem
- grid.464332.4Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing, 100193 China ,grid.35155.370000 0004 1790 4137Present Address: Huazhong Agricultural University, Wuhan, China
| | - Chae Rhim Lee
- grid.47840.3f0000 0001 2181 7878Department of Molecular and Cell Biology and Cancer Research Laboratory, University of California, Berkeley, CA 94720-3200 USA ,grid.266093.80000 0001 0668 7243Present Address: University of California, Irvine, CA USA
| | - Hui Jiang
- grid.464332.4Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing, 100193 China
| | - Jiabo Ding
- grid.464332.4Institute of Animal Sciences of Chinese Academy of Agricultural Sciences, Beijing, 100193 China
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Szczerba M, Subramanian S, Trainor K, McCaughan M, Kibler KV, Jacobs BL. Small Hero with Great Powers: Vaccinia Virus E3 Protein and Evasion of the Type I IFN Response. Biomedicines 2022; 10:biomedicines10020235. [PMID: 35203445 PMCID: PMC8869630 DOI: 10.3390/biomedicines10020235] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/12/2022] [Accepted: 01/15/2022] [Indexed: 12/14/2022] Open
Abstract
Poxviridae have developed a plethora of strategies to evade innate and adaptive immunity. In this review, we focused on the vaccinia virus E3 protein, encoded by the E3L gene. E3 is present within the Chordopoxvirinae subfamily (with the exception of the avipoxviruses and molluscum contagiosum virus) and displays pleiotropic effects on the innate immune system. Initial studies identified E3 as a double-stranded RNA (dsRNA)-binding protein (through its C terminus), able to inhibit the activation of protein kinase dependent on RNA (PKR) and the 2′5′-oligoadenylate synthetase (OAS)/RNase L pathway, rendering E3 a protein counteracting the type I interferon (IFN) system. In recent years, N-terminal mutants of E3 unable to bind to Z-form nucleic acids have been shown to induce the cellular death pathway necroptosis. This pathway was dependent on host IFN-inducible Z-DNA-binding protein 1 (ZBP1); full-length E3 is able to inhibit ZBP1-mediated necroptosis. Binding to what was identified as Z-RNA has emerged as a novel mechanism of counteracting the type I IFN system and has broadened our understanding of innate immunity against viral infections. This article gives an overview of the studies leading to our understanding of the vaccinia virus E3 protein function and its involvement in viral pathogenesis. Furthermore, a short summary of other viral systems is provided.
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Affiliation(s)
- Mateusz Szczerba
- Biodesign Center for Immunotherapy, Vaccines and Virotherapy, Arizona State University, Tempe, AZ 85281, USA; (M.S.); (S.S.); (K.T.); (M.M.); (K.V.K.)
| | - Sambhavi Subramanian
- Biodesign Center for Immunotherapy, Vaccines and Virotherapy, Arizona State University, Tempe, AZ 85281, USA; (M.S.); (S.S.); (K.T.); (M.M.); (K.V.K.)
- School of Life Sciences, Arizona State University, Tempe, AZ 85281, USA
- Vir Biotechnology, San Francisco, CA 94158, USA
| | - Kelly Trainor
- Biodesign Center for Immunotherapy, Vaccines and Virotherapy, Arizona State University, Tempe, AZ 85281, USA; (M.S.); (S.S.); (K.T.); (M.M.); (K.V.K.)
- Faculty of Biology, Coconino Community College, Flagstaff, AZ 86005, USA
| | - Megan McCaughan
- Biodesign Center for Immunotherapy, Vaccines and Virotherapy, Arizona State University, Tempe, AZ 85281, USA; (M.S.); (S.S.); (K.T.); (M.M.); (K.V.K.)
- School of Life Sciences, Arizona State University, Tempe, AZ 85281, USA
| | - Karen V. Kibler
- Biodesign Center for Immunotherapy, Vaccines and Virotherapy, Arizona State University, Tempe, AZ 85281, USA; (M.S.); (S.S.); (K.T.); (M.M.); (K.V.K.)
| | - Bertram L. Jacobs
- Biodesign Center for Immunotherapy, Vaccines and Virotherapy, Arizona State University, Tempe, AZ 85281, USA; (M.S.); (S.S.); (K.T.); (M.M.); (K.V.K.)
- School of Life Sciences, Arizona State University, Tempe, AZ 85281, USA
- Correspondence:
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Jiang W, Deng Z, Dai X, Zhao W. PANoptosis: A New Insight Into Oral Infectious Diseases. Front Immunol 2022; 12:789610. [PMID: 34970269 PMCID: PMC8712492 DOI: 10.3389/fimmu.2021.789610] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/25/2021] [Indexed: 12/11/2022] Open
Abstract
The oral microbiome, one of the most complex and intensive microbial ecosystems in the human body, comprises bacteria, archaea, fungi, protozoa, and viruses. Dysbiosis of the oral microbiome is the initiating factor that leads to oral infectious diseases. Infection is a sophisticated biological process involving interplay between the pathogen and the host, which often leads to activation of programmed cell death. Studies suggest that pyroptosis, apoptosis, and necroptosis are involved in multiple oral infectious diseases. Further understanding of crosstalk between cell death pathways has led to pyroptosis, apoptosis, and necroptosis being integrated into a single term: PANoptosis. PANoptosis is a multifaceted agent of the immune response that has important pathophysiological relevance to infectious diseases, autoimmunity, and cancer. As such, it plays an important role in innate immune cells that detect and eliminate intracellular pathogens. In addition to the classical model of influenza virus-infected and Yersinia-infected macrophages, other studies have expanded the scope of PANoptosis to include other microorganisms, as well as potential roles in cell types other than macrophages. In this review, we will summarize the pathophysiological mechanisms underlying inflammation and tissue destruction caused by oral pathogens. We present an overview of different pathogens that may induce activation of PANoptosis, along with the functional consequences of PANoptosis in the context of oral infectious diseases. To advance our understanding of immunology, we also explore the strategies used by microbes that enable immune evasion and replication within host cells. Improved understanding of the interplay between the host and pathogen through PANoptosis will direct development of therapeutic strategies that target oral infectious diseases.
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Affiliation(s)
- Weiyi Jiang
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zilong Deng
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Xingzhu Dai
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Wanghong Zhao
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou, China
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Liu X, Xie X, Ren Y, Shao Z, Zhang N, Li L, Ding X, Zhang L. The role of necroptosis in disease and treatment. MedComm (Beijing) 2021; 2:730-755. [PMID: 34977874 PMCID: PMC8706757 DOI: 10.1002/mco2.108] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 12/11/2022] Open
Abstract
Necroptosis, a distinctive type of programmed cell death different from apoptosis or necrosis, triggered by a series of death receptors such as tumor necrosis factor receptor 1 (TNFR1), TNFR2, and Fas. In case that apoptosis process is blocked, necroptosis pathway is initiated with the activation of three key downstream mediators which are receptor-interacting serine/threonine protein kinase 1 (RIPK1), RIPK3, and mixed lineage kinase domain-like protein (MLKL). The whole process eventually leads to destruction of the cell membrane integrity, swelling of organelles, and severe inflammation. Over the past decade, necroptosis has been found widely involved in life process of human beings and animals. In this review, we attempt to explore the therapeutic prospects of necroptosis regulators by describing its molecular mechanism and the role it played in pathological condition and tissue homeostasis, and to summarize the research and clinical applications of corresponding regulators including small molecule inhibitors, chemicals, Chinese herbal extracts, and biological agents in the treatment of various diseases.
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Affiliation(s)
- Xiaoxiao Liu
- Department of Radiation OncologyAffiliated Hospital of Xuzhou Medical UniversityXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
| | - Xin Xie
- Department of Radiation OncologyAffiliated Hospital of Xuzhou Medical UniversityXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
| | - Yuanyuan Ren
- Department of Radiation OncologyAffiliated Hospital of Xuzhou Medical UniversityXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
| | - Zhiying Shao
- Department of Radiation OncologyAffiliated Hospital of Xuzhou Medical UniversityXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Cancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
| | - Nie Zhang
- Department of Radiation OncologyAffiliated Hospital of Xuzhou Medical UniversityXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
| | - Liantao Li
- Department of Radiation OncologyAffiliated Hospital of Xuzhou Medical UniversityXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
| | - Xin Ding
- Department of Radiation OncologyAffiliated Hospital of Xuzhou Medical UniversityXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
| | - Longzhen Zhang
- Department of Radiation OncologyAffiliated Hospital of Xuzhou Medical UniversityXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer BiotherapyCancer InstituteXuzhou Medical UniversityXuzhouJiangsu ProvinceP. R. China
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Muscolino E, Castiglioni C, Brixel R, Frascaroli G, Brune W. Species-Specific Inhibition of Necroptosis by HCMV UL36. Viruses 2021; 13:v13112134. [PMID: 34834942 PMCID: PMC8621378 DOI: 10.3390/v13112134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 12/31/2022] Open
Abstract
Viral infection activates cellular antiviral defenses including programmed cell death (PCD). Many viruses, particularly those of the Herpesviridae family, encode cell death inhibitors that antagonize different forms of PCD. While some viral inhibitors are broadly active in cells of different species, others have species-specific functions, probably reflecting the co-evolution of the herpesviruses with their respective hosts. Human cytomegalovirus (HCMV) protein UL36 is a dual cell death pathway inhibitor. It blocks death receptor-dependent apoptosis by inhibiting caspase-8 activation, and necroptosis by binding to the mixed lineage kinase domain-like (MLKL) protein and inducing its degradation. While UL36 has been shown to inhibit apoptosis in human and murine cells, the specificity of its necroptosis-inhibiting function has not been investigated. Here we show that UL36 interacts with both human and murine MLKL, but has a higher affinity for human MLKL. When expressed by a recombinant mouse cytomegalovirus (MCMV), UL36 caused a modest reduction of murine MLKL levels but did not inhibit necroptosis in murine cells. These data suggest that UL36 inhibits necroptosis, but not apoptosis, in a species-specific manner, similar to ICP6 of herpes simplex virus type 1 and MC159 of molluscum contagiosum virus. Species-specific necroptosis inhibition might contribute to the narrow host range of these viruses.
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Affiliation(s)
- Elena Muscolino
- Leibniz Institute for Experimental Virology (HPI), 20251 Hamburg, Germany; (E.M.); (C.C.); (R.B.); (G.F.)
- Molecular Virology Group, Department of Experimental and Health Sciences, Universitat Pompeu Fabra, 08003 Barcelona, Spain
| | - Claudia Castiglioni
- Leibniz Institute for Experimental Virology (HPI), 20251 Hamburg, Germany; (E.M.); (C.C.); (R.B.); (G.F.)
| | - Renke Brixel
- Leibniz Institute for Experimental Virology (HPI), 20251 Hamburg, Germany; (E.M.); (C.C.); (R.B.); (G.F.)
| | - Giada Frascaroli
- Leibniz Institute for Experimental Virology (HPI), 20251 Hamburg, Germany; (E.M.); (C.C.); (R.B.); (G.F.)
| | - Wolfram Brune
- Leibniz Institute for Experimental Virology (HPI), 20251 Hamburg, Germany; (E.M.); (C.C.); (R.B.); (G.F.)
- Correspondence: ; Tel.: +49-40-48051351
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Shohael AM, Moin AT, Chowdhury MAB, Riana SH, Ullah MA, Araf Y, Sarkar B. An Updated Overview of Herpes Simplex Virus-1 Infection: Insights from Origin to Mitigation Measures. ELECTRONIC JOURNAL OF GENERAL MEDICINE 2021. [DOI: 10.29333/ejgm/10869] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Liu Z, Nailwal H, Rector J, Rahman MM, Sam R, McFadden G, Chan FKM. A class of viral inducer of degradation of the necroptosis adaptor RIPK3 regulates virus-induced inflammation. Immunity 2021; 54:247-258.e7. [PMID: 33444549 DOI: 10.1016/j.immuni.2020.11.020] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 09/10/2020] [Accepted: 11/23/2020] [Indexed: 12/13/2022]
Abstract
The vaccine strain against smallpox, vaccinia virus (VACV), is highly immunogenic yet causes relatively benign disease. These attributes are believed to be caused by gene loss in VACV. Using a targeted small interfering RNA (siRNA) screen, we identified a viral inhibitor found in cowpox virus (CPXV) and other orthopoxviruses that bound to the host SKP1-Cullin1-F-box (SCF) machinery and the essential necroptosis kinase receptor interacting protein kinase 3 (RIPK3). This "viral inducer of RIPK3 degradation" (vIRD) triggered ubiquitination and proteasome-mediated degradation of RIPK3 and inhibited necroptosis. In contrast to orthopoxviruses, the distantly related leporipoxvirus myxoma virus (MYXV), which infects RIPK3-deficient hosts, lacks a functional vIRD. Introduction of vIRD into VACV, which encodes a truncated and defective vIRD, enhanced viral replication in mice. Deletion of vIRD reduced CPXV-induced inflammation, viral replication, and mortality, which were reversed in RIPK3- and MLKL-deficient mice. Hence, vIRD-RIPK3 drives pathogen-host evolution and regulates virus-induced inflammation and pathogenesis.
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Affiliation(s)
- Zhijun Liu
- Department of Immunology, Duke University School of Medicine, DUMC 3010, Durham, NC 27710, USA
| | - Himani Nailwal
- Department of Pathology, Immunology and Microbiology Program, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Jonah Rector
- Department of Immunology, Duke University School of Medicine, DUMC 3010, Durham, NC 27710, USA
| | - Masmudur M Rahman
- Center for Immunotherapy, Vaccines and Virotherapy, Biodesign Institute, Arizona State University, Tempe, AZ 85281, USA
| | - Richard Sam
- Department of Pathology, Immunology and Microbiology Program, University of Massachusetts Medical School, Worcester, MA 01655, USA
| | - Grant McFadden
- Center for Immunotherapy, Vaccines and Virotherapy, Biodesign Institute, Arizona State University, Tempe, AZ 85281, USA
| | - Francis Ka-Ming Chan
- Department of Immunology, Duke University School of Medicine, DUMC 3010, Durham, NC 27710, USA; Department of Pathology, Immunology and Microbiology Program, University of Massachusetts Medical School, Worcester, MA 01655, USA.
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13
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Hu H, Wu G, Shu Z, Yu D, Nan N, Yuan F, Liu X, Wang H. ICP6 Prevents RIP1 Activation to Hinder Necroptosis Signaling. Front Cell Dev Biol 2020; 8:595253. [PMID: 33195272 PMCID: PMC7661466 DOI: 10.3389/fcell.2020.595253] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 10/13/2020] [Indexed: 11/13/2022] Open
Abstract
Necroptosis is a type of programmed necrosis which depends on the activation of receptor-interacting protein kinase 3 (RIP3). Herpes simplex virus type 1 (HSV-1) is known to block necroptosis by the viral protein ICP6 in human cells, but its specific inhibitory mechanism is not fully understood. Here we reported that ICP6 could promote rather than suppress the formation of necrosome, the necroptosis signaling complex containing RIP3 and upstream regulator receptor-interacting protein kinase 1 (RIP1), but blocked RIP3 activation. Moreover, ICP6 could reduce the necroptosis-specific auto-phosphorylation of RIP1 regardless of the presence of RIP3. These results indicate that ICP6 block necroptosis through preventing RIP1 activation dependent signal transduction in necrosome.
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Affiliation(s)
- Hong Hu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.,CAS Center for Excellence in Molecular Cell Science, Shanghai Institute of Biochemistry and Cell Biology, Chinese Academy of Sciences, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Guoxiang Wu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zhaoqian Shu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Dandan Yu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Ning Nan
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Feiyang Yuan
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xiaoyan Liu
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
| | - Huayi Wang
- School of Life Science and Technology, ShanghaiTech University, Shanghai, China
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14
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Workenhe ST, Nguyen A, Bakhshinyan D, Wei J, Hare DN, MacNeill KL, Wan Y, Oberst A, Bramson JL, Nasir JA, Vito A, El-Sayes N, Singh SK, McArthur AG, Mossman KL. De novo necroptosis creates an inflammatory environment mediating tumor susceptibility to immune checkpoint inhibitors. Commun Biol 2020; 3:645. [PMID: 33149194 PMCID: PMC7643076 DOI: 10.1038/s42003-020-01362-w] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 10/08/2020] [Indexed: 02/08/2023] Open
Abstract
Cancer immunotherapies using monoclonal antibodies to block inhibitory checkpoints are showing durable remissions in many types of cancer patients, although the majority of breast cancer patients acquire little benefit. Human melanoma and lung cancer patient studies suggest that immune checkpoint inhibitors are often potent in patients that already have intratumoral T cell infiltrate; although it remains unknown what types of interventions can result in an intratumoral T cell infiltrate in breast cancer. Using non-T cell-inflamed mammary tumors, we assessed what biological processes and downstream inflammation can overcome the barriers to spontaneous T cell priming. Here we show a specific type of combination therapy, consisting of oncolytic virus and chemotherapy, activates necroptosis and limits tumor growth in autochthonous tumors. Combination therapy activates proinflammatory cytokines; intratumoral influx of myeloid cells and cytotoxic T cell infiltrate in locally treated and distant autochthonous tumors to render them susceptible to immune checkpoint inhibitors.
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Affiliation(s)
- Samuel T Workenhe
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.
| | - Andrew Nguyen
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - David Bakhshinyan
- Stem Cell and Cancer Research Institute, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Jiarun Wei
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - David N Hare
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Kelly L MacNeill
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Yonghong Wan
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Andrew Oberst
- Department of Immunology, University of Washington, Seattle, WA, 98109, USA
| | - Jonathan L Bramson
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Jalees A Nasir
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, ON, Canada
| | - Alyssa Vito
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Nader El-Sayes
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - Sheila K Singh
- Stem Cell and Cancer Research Institute, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Andrew G McArthur
- Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
- David Braley Centre for Antibiotic Discovery, McMaster University, Hamilton, ON, Canada
| | - Karen L Mossman
- McMaster Immunology Research Centre, Institute for Infectious Disease Research, Department of Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada.
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15
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Birzer A, Kraner ME, Heilingloh CS, Mühl-Zürbes P, Hofmann J, Steinkasserer A, Popella L. Mass Spectrometric Characterization of HSV-1 L-Particles From Human Dendritic Cells and BHK21 Cells and Analysis of Their Functional Role. Front Microbiol 2020; 11:1997. [PMID: 33117298 PMCID: PMC7550753 DOI: 10.3389/fmicb.2020.01997] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 07/28/2020] [Indexed: 12/01/2022] Open
Abstract
Herpes simplex virus type 1 (HSV-1) is a very common human pathogenic virus among the world’s population. The lytic replication cycle of HSV-1 is, amongst others, characterized by a tripartite viral gene expression cascade, the assembly of nucleocapsids involving their subsequent nuclear egress, tegumentation, re-envelopment and the final release of progeny viral particles. During productive infection of a multitude of different cell types, HSV-1 generates not only infectious heavy (H-) particles, but also non-infectious light (L-) particles, lacking the capsid. In monocyte-derived mature dendritic cells (mDCs), HSV-1 causes a non-productive infection with the predominant release of L-particles. Until now, the generation and function of L-particles is not well understood, however, they are described as factors transferring viral components to the cellular microenvironment. To obtain deeper insights into the L-particle composition, we performed a mass-spectrometry-based analysis of L-particles derived from HSV-1-infected mDCs or BHK21 cells and H-particles from the latter one. In total, we detected 63 viral proteins in both H- and L-particle preparations derived from HSV-1-infected BHK21 cells. In L-particles from HSV-1-infected mDCs we identified 41 viral proteins which are differentially distributed compared to L-particles from BHK21 cells. In this study, we present data suggesting that L-particles modify mDCs and suppress their T cell stimulatory capacity. Due to the plethora of specific viral proteins incorporated into and transmitted by L-particles, it is tempting to speculate that L-particles manipulate non-infected bystander cells for the benefit of the virus.
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Affiliation(s)
- Alexandra Birzer
- Department of Immune Modulation, Universitätsklinikum Erlangen, Erlangen, Germany
| | - Max Edmund Kraner
- Division of Biochemistry, Department of Biology, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | | | - Petra Mühl-Zürbes
- Department of Immune Modulation, Universitätsklinikum Erlangen, Erlangen, Germany
| | - Jörg Hofmann
- Division of Biochemistry, Department of Biology, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | | | - Linda Popella
- Department of Immune Modulation, Universitätsklinikum Erlangen, Erlangen, Germany
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16
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RIP3-mediated necroptosis is regulated by inter-filament assembly of RIP homotypic interaction motif. Cell Death Differ 2020; 28:251-266. [PMID: 32737444 PMCID: PMC7853141 DOI: 10.1038/s41418-020-0598-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 07/11/2020] [Accepted: 07/20/2020] [Indexed: 01/15/2023] Open
Abstract
Necroptosis is mediated by signaling complexes called necrosomes, which contain receptor-interacting protein 3 (RIP3) and upstream effectors, such as RIP1. In necrosomes, the RIP homotypic interaction motif (RHIM) of RIP3 and RIP1 forms amyloidal complex. But how the amyloidal necrosomes control RIP3 activation and cell necroptosis has not been determined. Here, we showed that RIP3 amyloid fibrils could further assemble into large fibrillar networks which presents as cellular puncta during necroptosis. A viral RHIM-containing necroptosis inhibitor M45 could form heteroamyloid with RIP3 in cells and prevent RIP3 puncta formation and cell necroptosis. We characterized mutual antagonism between RIP3–RHIM and M45–RHIM in necroptosis regulation, which was caused by distinct inter-filament interactions in RIP3, M45 amyloids revealed with atomic force microscopy. Moreover, double mutations Asn464 and Met468 in RIP3–RHIM to Asp disrupted RIP3 kinase-dependent necroptosis. While the mutant RIP3(N464D/M468D) could form amyloid as wild type upon necroptosis induction. Based on these results, we propose that RIP3 amyloid formation is required but not sufficient in necroptosis signaling, the ordered inter-filament assembly of RIP3 is critical in RIP3 amyloid mediated kinase activation and cell necroptosis.
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17
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Liu Z, Chan FKM. Regulatory mechanisms of RIPK1 in cell death and inflammation. Semin Cell Dev Biol 2020; 109:70-75. [PMID: 32616439 DOI: 10.1016/j.semcdb.2020.06.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/19/2020] [Accepted: 06/24/2020] [Indexed: 10/24/2022]
Abstract
Receptor Interacting Protein Kinase 1 (RIPK1) and RIPK3 are key adaptors that play critical roles in inflammatory and cell death signaling. Work in recent years have shown that their activities are tightly regulated by ubiquitination, phosphorylation and proteolysis. In addition to these post-translational modifications, the expression and activities of these kinases can further be tuned by environmental changes in pH and oxygen content. Proper control of these regulatory processes is crucial for the RIP kinases to execute their functions in immune responses and tissue homeostasis. In this review, we discuss recent advance in our understanding of the molecular mechanisms that regulate the activities of the RIP kinases. We will also discuss how the different regulatory mechanisms contribute to the functions of RIPK1 and RIPK3 in different pathophysiological settings.
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Affiliation(s)
- Zhijun Liu
- Department of Immunology, Duke University School of Medicine, Durham, NC, 27710-3010, United States
| | - Francis Ka-Ming Chan
- Department of Immunology, Duke University School of Medicine, Durham, NC, 27710-3010, United States.
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18
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Muscolino E, Schmitz R, Loroch S, Caragliano E, Schneider C, Rizzato M, Kim YH, Krause E, Juranić Lisnić V, Sickmann A, Reimer R, Ostermann E, Brune W. Herpesviruses induce aggregation and selective autophagy of host signalling proteins NEMO and RIPK1 as an immune-evasion mechanism. Nat Microbiol 2019; 5:331-342. [DOI: 10.1038/s41564-019-0624-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 10/30/2019] [Indexed: 12/13/2022]
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19
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Abstract
Necroptosis is a tightly regulated form of necrosis that requires the activation of receptor-interacting protein (RIP) kinases RIPK1 and RIPK3, as well as the RIPK3 substrate mixed lineage kinase domain-like protein (MLKL). Because of membrane rupture, necroptotic cells release damage-associated molecular patterns (DAMPs) that evoke immune responses. Necroptosis is emerging as an important cellular response in the modulation of cancer initiation, progression, and metastasis. Necroptosis of cancer cells is considered to be an immunogenic cell death capable of activating anti-tumor immunity. Necroptosis also participates in the promotion of myeloid cell-induced adaptive immune suppression and thus contributes to oncogenesis. In addition, necroptosis of endothelial cells and tumor cells is conducive to tumor metastasis. In this review, we summarize the current knowledge of the complex role of necroptosis in cancer and discuss the potential of targeting necroptosis components for cancer therapies.
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Affiliation(s)
- Fang Zhu
- Cyrus Tang Hematology Center and Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China.,Key Laboratory of Stem Cells and Biomedical Materials of Jiangsu Province and Chinese Ministry of Science and Technology, Soochow University, Suzhou 215123, China.,Center of Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medial College, Beijing 100005, China.,Suzhou Institute of Systems Medicine, Suzhou 215123, China
| | - Wei Zhang
- Cyrus Tang Hematology Center and Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China.,Key Laboratory of Stem Cells and Biomedical Materials of Jiangsu Province and Chinese Ministry of Science and Technology, Soochow University, Suzhou 215123, China.,Center of Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medial College, Beijing 100005, China.,Suzhou Institute of Systems Medicine, Suzhou 215123, China
| | - Tao Yang
- Cyrus Tang Hematology Center and Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China.,Key Laboratory of Stem Cells and Biomedical Materials of Jiangsu Province and Chinese Ministry of Science and Technology, Soochow University, Suzhou 215123, China.,Center of Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medial College, Beijing 100005, China.,Suzhou Institute of Systems Medicine, Suzhou 215123, China
| | - Su-Dan He
- Cyrus Tang Hematology Center and Collaborative Innovation Center of Hematology, State Key Laboratory of Radiation Medicine and Protection, Soochow University, Suzhou 215123, China.,Key Laboratory of Stem Cells and Biomedical Materials of Jiangsu Province and Chinese Ministry of Science and Technology, Soochow University, Suzhou 215123, China.,Center of Systems Medicine, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences & Peking Union Medial College, Beijing 100005, China.,Suzhou Institute of Systems Medicine, Suzhou 215123, China
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20
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Owino CO, Chu JJH. Recent advances on the role of host factors during non-poliovirus enteroviral infections. J Biomed Sci 2019; 26:47. [PMID: 31215493 PMCID: PMC6582496 DOI: 10.1186/s12929-019-0540-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 06/11/2019] [Indexed: 02/06/2023] Open
Abstract
Non-polio enteroviruses are emerging viruses known to cause outbreaks of polio-like infections in different parts of the world with several cases already reported in Asia Pacific, Europe and in United States of America. These outbreaks normally result in overstretching of health facilities as well as death in children under the age of five. Most of these infections are usually self-limiting except for the neurological complications associated with human enterovirus A 71 (EV-A71). The infection dynamics of these viruses have not been fully understood, with most inferences made from previous studies conducted with poliovirus.Non-poliovirus enteroviral infections are responsible for major outbreaks of hand, foot and mouth disease (HFMD) often associated with neurological complications and severe respiratory diseases. The myriad of disease presentations observed so far in children calls for an urgent need to fully elucidate the replication processes of these viruses. There are concerted efforts from different research groups to fully map out the role of human host factors in the replication cycle of these viral infections. Understanding the interaction between viral proteins and human host factors will unravel important insights on the lifecycle of this groups of viruses.This review provides the latest update on the interplay between human host factors/processes and non-polio enteroviruses (NPEV). We focus on the interactions involved in viral attachment, entry, internalization, uncoating, replication, virion assembly and eventual egress of the NPEV from the infected cells. We emphasize on the virus- human host interplay and highlight existing knowledge gaps that needs further studies. Understanding the NPEV-human host factors interactions will be key in the design and development of vaccines as well as antivirals against enteroviral infections. Dissecting the role of human host factors during NPEV infection cycle will provide a clear picture of how NPEVs usurp the human cellular processes to establish an efficient infection. This will be a boost to the drug and vaccine development against enteroviruses which will be key in control and eventual elimination of the viral infections.
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Affiliation(s)
- Collins Oduor Owino
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), Singapore, 138673, Singapore
| | - Justin Jang Hann Chu
- Department of Microbiology and Immunology, National University of Singapore, Singapore, 117597, Singapore.
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), Singapore, 138673, Singapore.
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21
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Ali M, Roback L, Mocarski ES. Herpes simplex virus 1 ICP6 impedes TNF receptor 1-induced necrosome assembly during compartmentalization to detergent-resistant membrane vesicles. J Biol Chem 2018; 294:991-1004. [PMID: 30504227 DOI: 10.1074/jbc.ra118.004651] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 11/06/2018] [Indexed: 12/16/2022] Open
Abstract
Receptor-interacting protein (RIP) kinase 3 (RIPK3)-dependent necroptosis directs inflammation and tissue injury, as well as anti-viral host defense. In human cells, herpes simplex virus 1 (HSV1) UL39-encoded ICP6 blocks RIP homotypic interacting motif (RHIM) signal transduction, preventing this leakage form of cell death and sustaining viral infection. TNF receptor 1 (TNFR1)-induced necroptosis is known to require the formation of a RIPK1-RIPK3-mixed lineage kinase domain-like pseudokinase (MLKL) signaling complex (necrosome) that we find compartmentalizes exclusively to caveolin-1-associated detergent-resistant membrane (DRM) vesicles in HT-29 cells. Translocation proceeds in the presence of RIPK3 kinase inhibitor GSK'840 or MLKL inhibitor necrosulfonomide but requires the kinase activity, as well as RHIM signaling of RIPK1. ICP6 impedes the translocation of RIPK1, RIPK3, and MLKL to caveolin-1-containing DRM vesicles without fully blocking the activation of RIPK3 or phosphorylation of MLKL. Consistent with the important contribution of RIPK1 RHIM-dependent recruitment of RIPK3, overexpression of RHIM-deficient RIPK3 results in phosphorylation of MLKL, but this does not lead to either translocation or necroptosis. Combined, these data reveal a critical role of RHIM signaling in the recruitment of the MLKL-containing necrosome to membrane vesicle-associated sites of aggregation. A similar mechanism is predicted for other RHIM-containing signaling adaptors, Z-nucleic acid-binding protein 1 (ZBP1) (also called DAI and DLM1), and TIR domain-containing adapter-inducing interferon-β (TRIF).
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Affiliation(s)
- Mohammad Ali
- From the Department of Microbiology & Immunology, Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia 30322
| | - Linda Roback
- From the Department of Microbiology & Immunology, Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia 30322
| | - Edward S Mocarski
- From the Department of Microbiology & Immunology, Emory Vaccine Center, Emory University School of Medicine, Atlanta, Georgia 30322
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22
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RIP kinases as modulators of inflammation and immunity. Nat Immunol 2018; 19:912-922. [DOI: 10.1038/s41590-018-0188-x] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 07/24/2018] [Indexed: 12/13/2022]
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23
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Zhao C, Wang M, Cheng A, Yang Q, Wu Y, Zhu D, Chen S, Liu M, Zhao X, Jia R, Sun K, Chen X. Programmed cell death: the battlefield between the host and alpha-herpesviruses and a potential avenue for cancer treatment. Oncotarget 2018; 9:30704-30719. [PMID: 30093980 PMCID: PMC6078129 DOI: 10.18632/oncotarget.25694] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 05/24/2018] [Indexed: 12/24/2022] Open
Abstract
Programed cell death is an antiviral mechanism by which the host limits viral replication and protects uninfected cells. Many viruses encode proteins resistant to programed cell death to escape the host immune defenses, which indicates that programed cell death is more favorable for the host immune defense. Alpha-herpesviruses are pathogens that widely affect the health of humans and animals in different communities worldwide. Alpha-herpesviruses can induce apoptosis, autophagy and necroptosis through different molecular mechanisms. This review concisely illustrates the different pathways of apoptosis, autophagy, and necroptosis induced by alpha-herpesviruses. These pathways influence viral infection and replication and are a potential avenue for cancer treatment. This review will increase our understanding of the role of programed cell death in the host immune defense and provides new possibilities for cancer treatment.
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Affiliation(s)
- Chuankuo Zhao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Mingshu Wang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Anchun Cheng
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Qiao Yang
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Ying Wu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Dekang Zhu
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Shun Chen
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Mafeng Liu
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - XinXin Zhao
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Renyong Jia
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Kunfeng Sun
- Institute of Preventive Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
| | - Xiaoyue Chen
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China.,Avian Disease Research Center, College of Veterinary Medicine, Sichuan Agricultural University, Wenjiang, Chengdu City 611130, Sichuan, P.R. China
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24
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Abstract
The programmed self-destruction of infected cells is a powerful antimicrobial strategy in metazoans. For decades, apoptosis represented the dominant mechanism by which the virus-infected cell was thought to undergo programmed cell death. More recently, however, new mechanisms of cell death have been described that are also key to host defense. One such mechanism in vertebrates is programmed necrosis, or "necroptosis", driven by receptor-interacting protein kinase 3 (RIPK3). Once activated by innate immune stimuli, including virus infections, RIPK3 phosphorylates the mixed lineage kinase domain-like protein (MLKL), which then disrupts cellular membranes to effect necroptosis. Emerging evidence demonstrates that RIPK3 can also mediate apoptosis and regulate inflammasomes. Here, we review studies on the mechanisms by which viruses activate RIPK3 and the pathways engaged by RIPK3 that drive cell death.
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Affiliation(s)
- Jason W Upton
- Department of Molecular Biosciences, LaMontagne Center for Infectious Disease, University of Texas, Austin, TX, USA
| | - Maria Shubina
- Blood Cell Development and Function Program, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Siddharth Balachandran
- Blood Cell Development and Function Program, Fox Chase Cancer Center, Philadelphia, PA, USA
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25
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Irwin CR, Hitt MM, Evans DH. Targeting Nucleotide Biosynthesis: A Strategy for Improving the Oncolytic Potential of DNA Viruses. Front Oncol 2017; 7:229. [PMID: 29018771 PMCID: PMC5622948 DOI: 10.3389/fonc.2017.00229] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/07/2017] [Indexed: 12/14/2022] Open
Abstract
The rapid growth of tumors depends upon elevated levels of dNTPs, and while dNTP concentrations are tightly regulated in normal cells, this control is often lost in transformed cells. This feature of cancer cells has been used to advantage to develop oncolytic DNA viruses. DNA viruses employ many different mechanisms to increase dNTP levels in infected cells, because the low concentration of dNTPs found in non-cycling cells can inhibit virus replication. By disrupting the virus-encoded gene(s) that normally promote dNTP biosynthesis, one can assemble oncolytic versions of these agents that replicate selectively in cancer cells. This review covers the pathways involved in dNTP production, how they are dysregulated in cancer cells, and the various approaches that have been used to exploit this biology to improve the tumor specificity of oncolytic viruses. In particular, we compare and contrast the ways that the different types of oncolytic virus candidates can directly modulate these processes. We limit our review to the large DNA viruses that naturally encode homologs of the cellular enzymes that catalyze dNTP biogenesis. Lastly, we consider how this knowledge might guide future development of oncolytic viruses.
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Affiliation(s)
- Chad R Irwin
- Faculty of Medicine and Dentistry, Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB, Canada.,Faculty of Medicine and Dentistry, Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB, Canada
| | - Mary M Hitt
- Faculty of Medicine and Dentistry, Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB, Canada.,Faculty of Medicine and Dentistry, Department of Oncology, University of Alberta, Edmonton, AB, Canada
| | - David H Evans
- Faculty of Medicine and Dentistry, Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB, Canada.,Faculty of Medicine and Dentistry, Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB, Canada
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26
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Abstract
The past decade has witnessed a significant expansion of our understanding about the regulated cell death mechanisms beyond apoptosis. The application of chemical biological approaches had played a major role in driving these exciting discoveries. The discovery and use of small molecule probes in cell death research has not only revealed significant insights into the regulatory mechanism of cell death but also provided new drug targets and lead drug candidates for developing therapeutics of human diseases with huge unmet need. Here, we provide an overview of small molecule modulators for necroptosis and ferroptosis, two non-apoptotic cell death mechanisms, and discuss the molecular pathways and relevant pathophysiological mechanisms revealed by the judicial applications of such small molecule probes. We suggest that the development and applications of small molecule probes for non-apoptotic cell death mechanisms provide an outstanding example showcasing the power of chemical biology in exploring novel biological mechanisms.
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Affiliation(s)
- Ying Li
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 26 Qiuyue Rd, Pudong, Shanghai 201210, China
| | - Lihui Qian
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 26 Qiuyue Rd, Pudong, Shanghai 201210, China
| | - Junying Yuan
- Interdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 26 Qiuyue Rd, Pudong, Shanghai 201210, China; Department of Cell Biology, Harvard Medical School, 240 Longwood Ave., Boston, MA 02115, United States.
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27
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Jorgensen I, Rayamajhi M, Miao EA. Programmed cell death as a defence against infection. Nat Rev Immunol 2017; 17:151-164. [PMID: 28138137 DOI: 10.1038/nri.2016.147] [Citation(s) in RCA: 652] [Impact Index Per Article: 93.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Eukaryotic cells can die from physical trauma, which results in necrosis. Alternatively, they can die through programmed cell death upon the stimulation of specific signalling pathways. In this Review, we discuss the role of different cell death pathways in innate immune defence against bacterial and viral infection: apoptosis, necroptosis, pyroptosis and NETosis. We describe the interactions that interweave different programmed cell death pathways, which create complex signalling networks that cross-guard each other in the evolutionary 'arms race' with pathogens. Finally, we describe how the resulting cell corpses - apoptotic bodies, pore-induced intracellular traps (PITs) and neutrophil extracellular traps (NETs) - promote the clearance of infection.
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Affiliation(s)
- Ine Jorgensen
- Department of Immunology, Oslo University Hospital, Sognsvannsveien 20, Rikshospitalet 0372, Oslo, Norway
| | - Manira Rayamajhi
- Camargo Pharmaceutical Services, 2505 Meridian Parkway, Suite 175, Durham, North Carolina 27713, USA
| | - Edward A Miao
- Department of Microbiology and Immunology, Lineberger Comprehensive Cancer Center, and Center for Gastrointestinal Biology and Disease, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA
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28
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Vanden Berghe T, Hassannia B, Vandenabeele P. An outline of necrosome triggers. Cell Mol Life Sci 2016; 73:2137-52. [PMID: 27052312 PMCID: PMC4887535 DOI: 10.1007/s00018-016-2189-y] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 03/18/2016] [Indexed: 01/09/2023]
Abstract
Necroptosis was initially identified as a backup cell death program when apoptosis is blocked. However, it is now recognized as a cellular defense mechanism against infections and is presumed to be a detrimental factor in several pathologies driven by cell death. Necroptosis is a prototypic form of regulated necrosis that depends on activation of the necrosome, which is a protein complex in which receptor interacting protein kinase (RIPK) 3 is activated. The RIP homotypic interaction motif (RHIM) is the core domain that regulates activation of the necrosome. To date, three RHIM-containing proteins have been reported to activate the kinase activity of RIPK3 within the necrosome: RIPK1, Toll/IL-1 receptor domain-containing adaptor inducing IFN-β (TRIF), and DNA-dependent activator of interferon regulatory factors (DAI). Here, we review and discuss commonalities and differences of the increasing number of activators of the necrosome. Since the discovery that activation of mixed lineage kinase domain-like (MLKL) by RIPK3 kinase activity is crucial in necroptosis, interest has increased in monitoring and therapeutically targeting their activation. The availability of new phospho-specific antibodies, pharmacologic inhibitors, and transgenic models will allow us to further document the role of necroptosis in degenerative, inflammatory and infectious diseases.
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Affiliation(s)
- Tom Vanden Berghe
- Inflammation Research Center, VIB, 9000, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9000, Ghent, Belgium.
| | - Behrouz Hassannia
- Inflammation Research Center, VIB, 9000, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9000, Ghent, Belgium
- Laboratory of Eukaryotic Gene Expression and Signal Transduction, Department of Physiology, Ghent University, 9000, Ghent, Belgium
| | - Peter Vandenabeele
- Inflammation Research Center, VIB, 9000, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9000, Ghent, Belgium.
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29
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Wang Q, Yu M, Zhang K, Liu J, Tao P, Ge S, Ning Z. Expression Profile and Tissue-Specific Distribution of the Receptor-Interacting Protein 3 in BALB/c Mice. Biochem Genet 2016; 54:360-367. [PMID: 26969469 DOI: 10.1007/s10528-016-9724-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 03/01/2016] [Indexed: 10/22/2022]
Abstract
RIP3, a member of receptor-interacting protein family, is serine/threonine kinase that contributes to necrosis and promotes systematic inflammation. However, detailed information of the expression pattern and tissue distribution in BALB/c mice, a commonly used laboratory animal model, is still unavailable. Here, we provided the basic data of expression profile and histologic distribution of RIP3 in tissues of BALB/c mice. Rip3 mRNA expression levels and tissue distribution were detected by real-time quantitative PCR and immunohistochemical detection, respectively. Rip3 mRNA expression showed the highest level in the spleen and duodenum, while with the lowest level in brain. Immunohistochemical detection revealed this protein located in different type cells in different tissues. What's more, the obvious positive staining in nuclear was detected in liver cells and neurons in cerebral cortex of the brain, while cells in other organs, including heart, spleen, lung, kidney, stomach, duodenum and trachea, showed strong positive mainly in cytoplasm. The results will help us to further understand the site-specific functions of RIP3 in necrosis and inflammatory responses.
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Affiliation(s)
- Qingnan Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Meng Yu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Kaizhao Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Jianxin Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Pan Tao
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Shikun Ge
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China
| | - Zhangyong Ning
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, People's Republic of China.
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30
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Su C, Zhan G, Zheng C. Evasion of host antiviral innate immunity by HSV-1, an update. Virol J 2016; 13:38. [PMID: 26952111 PMCID: PMC4782282 DOI: 10.1186/s12985-016-0495-5] [Citation(s) in RCA: 109] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 02/26/2016] [Indexed: 12/20/2022] Open
Abstract
Herpes simplex virus type 1 (HSV-1) infection triggers a rapid induction of host innate immune responses. The type I interferon (IFN) signal pathway is a central aspect of host defense which induces a wide range of antiviral proteins to control infection of incoming pathogens. In some cases, viral invasion also induces DNA damage response, autophagy, endoplasmic reticulum stress, cytoplasmic stress granules and other innate immune responses, which in turn affect viral infection. However, HSV-1 has evolved multiple strategies to evade host innate responses and facilitate its infection. In this review, we summarize the most recent findings on the molecular mechanisms utilized by HSV-1 to counteract host antiviral innate immune responses with specific focus on the type I IFN signal pathway.
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Affiliation(s)
- Chenhe Su
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China.
| | - Guoqing Zhan
- Department of Infectious Disease, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, China.
| | - Chunfu Zheng
- Institutes of Biology and Medical Sciences, Soochow University, Suzhou, 215123, China. .,Department of Microbiology, Immunology and Infectious Deseases, University of Calgary, Calgary, AB, T2N 4N1, Canada.
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