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Zhai W, Wang Z, Ye C, Ke L, Wang H, Liu H. IL-6 Mutation Attenuates Liver Injury Caused by Aeromonas hydrophila Infection by Reducing Oxidative Stress in Zebrafish. Int J Mol Sci 2023; 24:17215. [PMID: 38139043 PMCID: PMC10743878 DOI: 10.3390/ijms242417215] [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: 10/27/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
Interleukin-6 (IL-6), a pleiotropic cytokine, plays a crucial role in acute stress induced by bacterial infection and is strongly associated with reactive oxygen species (ROS) production. However, the role of IL-6 in the liver of fish after Aeromonas hydrophila infection remains unclear. Therefore, this study constructed a zebrafish (Danio rerio) il-6 knockout line by CRISPR/Cas9 to investigate the function of IL-6 in the liver post bacterial infection. After infection with A. hydrophila, pathological observation showed that il-6-/- zebrafish exhibited milder liver damage than wild-type (WT) zebrafish. Moreover, liver transcriptome sequencing revealed that 2432 genes were significantly up-regulated and 1706 genes were significantly down-regulated in il-6-/- fish compared with WT fish after A. hydrophila infection. Further, gene ontology (GO) analysis showed that differentially expressed genes (DEGs) were significantly enriched in redox-related terms, including oxidoreductase activity, copper ion transport, etc. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that DEGs were significantly enriched in pathways such as the PPAR signaling pathway, suggesting that il-6 mutation has a significant effect on redox processes in the liver after A. hydrophila infection. Additionally, il-6-/- zebrafish exhibited lower malondialdehyde (MDA) levels and higher superoxide dismutase (SOD) activities in the liver compared with WT zebrafish following A. hydrophila infection, indicating that IL-6 deficiency mitigates oxidative stress induced by A. hydrophila infection in the liver. These findings provide a basis for further studies on the role of IL-6 in regulating oxidative stress in response to bacterial infections.
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Affiliation(s)
- Wenya Zhai
- Key Lab of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (W.Z.); (Z.W.); (C.Y.); (L.K.); (H.W.)
| | - Zhensheng Wang
- Key Lab of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (W.Z.); (Z.W.); (C.Y.); (L.K.); (H.W.)
| | - Canxun Ye
- Key Lab of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (W.Z.); (Z.W.); (C.Y.); (L.K.); (H.W.)
| | - Lan Ke
- Key Lab of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (W.Z.); (Z.W.); (C.Y.); (L.K.); (H.W.)
| | - Huanling Wang
- Key Lab of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (W.Z.); (Z.W.); (C.Y.); (L.K.); (H.W.)
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
| | - Hong Liu
- Key Lab of Freshwater Animal Breeding, College of Fisheries, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China; (W.Z.); (Z.W.); (C.Y.); (L.K.); (H.W.)
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, China
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Auroni TT, Arora K, Natekar JP, Pathak H, Elsharkawy A, Kumar M. The critical role of interleukin-6 in protection against neurotropic flavivirus infection. Front Cell Infect Microbiol 2023; 13:1275823. [PMID: 38053527 PMCID: PMC10694511 DOI: 10.3389/fcimb.2023.1275823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 10/27/2023] [Indexed: 12/07/2023] Open
Abstract
West Nile virus (WNV) and Japanese encephalitis virus (JEV) are emerging mosquito-borne flaviviruses causing encephalitis globally. No specific drug or therapy exists to treat flavivirus-induced neurological diseases. The lack of specific therapeutics underscores an urgent need to determine the function of important host factors involved in flavivirus replication and disease progression. Interleukin-6 (IL-6) upregulation has been observed during viral infections in both mice and humans, implying that it may influence the disease outcome significantly. Herein, we investigated the function of IL-6 in the pathogenesis of neurotropic flavivirus infections. First, we examined the role of IL-6 in flavivirus-infected human neuroblastoma cells, SK-N-SH, and found that IL-6 neutralization increased the WNV or JEV replication and inhibited the expression of key cytokines. We further evaluated the role of IL-6 by infecting primary mouse cells derived from IL-6 knockout (IL-6-/-) mice and wild-type (WT) mice with WNV or JEV. The results exhibited increased virus yields in the cells lacking the IL-6 gene. Next, our in vivo approach revealed that IL-6-/- mice had significantly higher morbidity and mortality after subcutaneous infection with the pathogenic WNV NY99 or JEV Nakayama strain compared to WT mice. The non-pathogenic WNV Eg101 strain did not cause mortality in WT mice but resulted in 60% mortality in IL-6-/- mice, indicating that IL-6 is required for the survival of mice after the peripheral inoculation of WNV or JEV. We also observed significantly higher viremia and brain viral load in IL-6-/- mice than in WT mice. Subsequently, we explored innate immune responses in WT and IL-6-/- mice after WNV NY99 infection. Our data demonstrated that the IL-6-/- mice had reduced levels of key cytokines in the serum during early infection but elevated levels of proinflammatory cytokines in the brain later, along with suppressed anti-inflammatory cytokines. In addition, mRNA expression of IFN-α and IFN-β was significantly lower in the infected IL-6-/- mice. In conclusion, these data suggest that the lack of IL-6 exacerbates WNV or JEV infection in vitro and in vivo by causing an increase in virus replication and dysregulating host immune response.
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Affiliation(s)
| | | | | | | | | | - Mukesh Kumar
- Department of Biology, College of Arts and Sciences, Georgia State University, Atlanta, GA, United States
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Roe T, Waddy S, Nikitas N. Multiple Organ Dysfunction Secondary to Herpes Simplex Virus -1 Reactivation After Treatment With Dexamethasone and Sarilumab for Covid-19 Disease. J Crit Care Med (Targu Mures) 2023; 9:122-128. [PMID: 37593250 PMCID: PMC10429616 DOI: 10.2478/jccm-2023-0010] [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: 08/18/2022] [Accepted: 02/08/2023] [Indexed: 08/19/2023] Open
Abstract
Introduction The immunological response to the SARS-CoV-2 virus and the treatment of COVID-19 disease present a potential susceptibility to viral reactivation, particularly Herpes simplex virus-1 (HSV-1). Case Presentation A 49-year-old female presented to hospital with severe COVID-19 pneumonitis and was given sarilumab and dexamethasone. She was intubated and ventilated in the intensive care unit (ICU) and initially demonstrated biochemical and clinical evidence of improvement. This was followed by a severe acute deterioration in respiratory, renal, and cardiovascular function, accompanied by a vesicular rash on the face. Polymerase chain reaction confirmed HSV-1 reactivation and treatment with acyclovir was commenced. After 49 days in ICU the patient was successfully weaned from all organ support, and she made a satisfactory recovery. Conclusions HSV-1 reactivation is common in COVID-19 and likely contributes to poorer clinical outcomes. The mechanism causing susceptibility to viral reactivation is not clearly defined, however, the development of critical illness induced immunosuppression via dysfunction of interferon and interleukin pathways is a likely mechanism. This effect could be perpetuated with immunosuppressant medications, although further research is needed to characterise this phenomenon.
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Affiliation(s)
- Thomas Roe
- University Hospitals Plymouth NHS Trust, Plymouth, Devon, United Kingdom
| | - Sam Waddy
- University Hospitals Plymouth NHS Trust, Plymouth, Devon, United Kingdom
| | - Nikitas Nikitas
- University Hospitals Plymouth NHS Trust, Plymouth, Devon, United Kingdom
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4
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The Dilemma of HSV-1 Oncolytic Virus Delivery: The Method Choice and Hurdles. Int J Mol Sci 2023; 24:ijms24043681. [PMID: 36835091 PMCID: PMC9962028 DOI: 10.3390/ijms24043681] [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: 01/04/2023] [Revised: 02/03/2023] [Accepted: 02/08/2023] [Indexed: 02/15/2023] Open
Abstract
Oncolytic viruses (OVs) have emerged as effective gene therapy and immunotherapy drugs. As an important gene delivery platform, the integration of exogenous genes into OVs has become a novel path for the advancement of OV therapy, while the herpes simplex virus type 1 (HSV-1) is the most commonly used. However, the current mode of administration of HSV-1 oncolytic virus is mainly based on the tumor in situ injection, which limits the application of such OV drugs to a certain extent. Intravenous administration offers a solution to the systemic distribution of OV drugs but is ambiguous in terms of efficacy and safety. The main reason is the synergistic role of innate and adaptive immunity of the immune system in the response against the HSV-1 oncolytic virus, which is rapidly cleared by the body's immune system before it reaches the tumor, a process that is accompanied by side effects. This article reviews different administration methods of HSV-1 oncolytic virus in the process of tumor treatment, especially the research progress in intravenous administration. It also discusses immune constraints and solutions of intravenous administration with the intent to provide new insights into HSV-1 delivery for OV therapy.
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Vakil MK, Mansoori Y, Al‐Awsi GRL, Hosseinipour A, Ahsant S, Ahmadi S, Ekrahi M, Montaseri Z, Pezeshki B, Mohaghegh P, Sohrabpour M, Bahmanyar M, Daraei A, Dadkhah Jouybari T, Tavassoli A, Ghasemian A. Individual genetic variability mainly of Proinflammatory cytokines, cytokine receptors, and toll-like receptors dictates pathophysiology of COVID-19 disease. J Med Virol 2022; 94:4088-4096. [PMID: 35538614 PMCID: PMC9348290 DOI: 10.1002/jmv.27849] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/02/2022] [Accepted: 05/06/2022] [Indexed: 11/12/2022]
Abstract
Innate and acquired immunity responses are crucial for viral infection elimination. However, genetic variations in coding genes may exacerbate the inflammation or initiate devastating cytokine storms which poses severe respiratory conditions in coronavirus disease-19 (COVID-19). Host genetic variations in particular those related to the immune responses determine the patients' susceptibility and COVID-19 severity and pathophysiology. Gene polymorphisms such as single nucleotide polymorphisms (SNPs) of interferons, TNF, IL1, IL4, IL6, IL7, IL10, and IL17 predispose patients to the severe form of COVID-19 or severe acute respiratory syndrome coronavirus-2 (SARS-COV-2). These variations mainly alter the gene expression and cause a severe response by B cells, T cells, monocytes, neutrophils, and natural killer cells participating in a cytokine storm. Moreover, cytokines and chemokines SNPs are associated with the severity of COVID-19 and clinical outcomes depending on the corresponding effect. Additionally, genetic variations in genes encoding toll-like receptors (TLRs) mainly TLR3, TLR7, and TLR9 have been related to the COVID-19 severe respiratory symptoms. The specific relation of these mutations with the novel variants of concern (VOCs) infection remains to be elucidated. Genetic variations mainly within genes encoding proinflammatory cytokines, cytokine receptors, and TLRs predispose patients to COVID-19 disease severity. Understanding host immune gene variations associated with the SARS-COV-2 infection opens insights to control the pathophysiology of emerging viral infections.
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Affiliation(s)
- Mohammad Kazem Vakil
- Noncommunicable Diseases Research CenterFasa University of Medical SciencesFasaIran
| | - Yaser Mansoori
- Noncommunicable Diseases Research CenterFasa University of Medical SciencesFasaIran
| | - Ghaidaa Raheem Lateef Al‐Awsi
- University of Al‐QadisiyahCollege of ScienceAl DiwaniyahIraq
- Department of Radiological TechniquesAl‐Mustaqbal University CollegeBabylonIraq
| | - Ali Hosseinipour
- Department of Internal MedicineFasa University of Medical SciencesFasaIran
| | - Samaneh Ahsant
- Noncommunicable Diseases Research CenterFasa University of Medical SciencesFasaIran
| | - Sedigheh Ahmadi
- Noncommunicable Diseases Research CenterFasa University of Medical SciencesFasaIran
| | - Mohammad Ekrahi
- Noncommunicable Diseases Research CenterFasa University of Medical SciencesFasaIran
| | - Zahra Montaseri
- Department of Infectious DiseasesFasa University of Medical SciencesFasaIran
| | - Babak Pezeshki
- Noncommunicable Diseases Research CenterFasa University of Medical SciencesFasaIran
| | - Poopak Mohaghegh
- Pediatrics Department, School of MedicineFasa University of Medical SciencesFasaIran
| | - Mojtaba Sohrabpour
- Noncommunicable Diseases Research CenterFasa University of Medical SciencesFasaIran
| | - Maryam Bahmanyar
- Pediatrics Department, School of MedicineFasa University of Medical SciencesFasaIran
| | - Abdolreza Daraei
- Department of Medical Genetics, School of MedicineBabol University of Medical SciencesBabolIran
| | | | | | - Abdolmajid Ghasemian
- Noncommunicable Diseases Research CenterFasa University of Medical SciencesFasaIran
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6
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ZIKV replication is differential in explants and cells of human placental which is suppressed by HSV-2 coinfection. Virology 2022; 570:45-56. [DOI: 10.1016/j.virol.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 02/25/2022] [Accepted: 03/17/2022] [Indexed: 11/19/2022]
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7
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Hu Y, Jiang Y, Liu S, Shen J, An Y. Phenotypes, Lung Microbiota and Cytokine Responses in Pneumonia After Hematopoietic Stem Cell Transplantation. J Inflamm Res 2021; 14:6055-6065. [PMID: 34824541 PMCID: PMC8610763 DOI: 10.2147/jir.s338914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 11/12/2021] [Indexed: 12/15/2022] Open
Abstract
Objective We aim to identify phenotypes of hematopoietic stem cell transplantation (HSCT) patients with pneumonia, discover relations of microbiota composition, cytokine profile, and outcomes between phenotypes. Specific cytokines will be evaluated for their role in lung injury in a murine model. Methods HSCT patients with pneumonia were included, and clustering of variables including cytokine levels provided the phenotypes. Outcomes were compared between phenotypes. Analysis of lung microbiota identified marker species of phenotypes. In the murine model, marker species-related cytokine regulations and the role of cytokines in lung injury were evaluated. Results Seventy-two patients were included, and two phenotypes were identified, namely "reactive" (N=21) and "nonreactive" (N=51) phenotype. Compared to their counterparts, patients with nonreactive phenotype had lower serum IL-6, IL-8, less severe inflammation, worse outcomes and more viruses as marker species in lung microbiota. The animal study validated the pathogens specific cytokine responses that presented in the human study and the potential protective role of IL-6 in these patients. Conclusion HSCT patients with pneumonia can be clustered into two phenotypes with different marker species and outcomes: the "nonreactive" phenotype and the "reactive" phenotype. Serum cytokine levels were different between the two phenotypes, which indicate the existence of the pathogen-related cytokine responses. For patients with the "nonreactive" phenotype, IL-6 therapy may improve their prognosis, which should be further tested in clinical studies.
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Affiliation(s)
- Yan Hu
- Department of Respiratory and Critical Care Medicine, Peking University International Hospital, Beijing, People's Republic of China
| | - Yanwen Jiang
- Department of Respiratory and Critical Care Medicine, Peking University International Hospital, Beijing, People's Republic of China
| | - Shuang Liu
- Department of Respiratory and Critical Care Medicine, Peking University International Hospital, Beijing, People's Republic of China
| | - Jiawei Shen
- Department of Critical Care Medicine, Peking University People's Hospital, Beijing, People's Republic of China
| | - Youzhong An
- Department of Critical Care Medicine, Peking University People's Hospital, Beijing, People's Republic of China
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8
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Singh S, Pandey R, Tomar S, Varshney R, Sharma D, Gangenahalli G. A brief molecular insight of COVID-19: epidemiology, clinical manifestation, molecular mechanism, cellular tropism and immuno-pathogenesis. Mol Cell Biochem 2021; 476:3987-4002. [PMID: 34195882 PMCID: PMC8244678 DOI: 10.1007/s11010-021-04217-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 06/23/2021] [Indexed: 02/06/2023]
Abstract
In December 2019, the emergence and expansion of novel and infectious respiratory virus SARS-CoV-2 originated from Wuhan, China caused an unprecedented threat to the public health and became a global pandemic. SARS-CoV-2 is an enveloped, positive sense and single stranded RNA virus belonging to genera betacoronavirus, of Coronaviridae family. The viral genome sequencing studies revealed 75-80% similarity with SARS-CoV. SARS-CoV-2 mainly affects the lower respiratory system and may progress to pneumonia and Acute Respiratory Distress Syndrome (ARDS). Apart from life-threatening situations and burden on the global healthcare system, the COVID-19 pandemic has imposed several challenges on the worldwide economics and livelihood. The novel pathogen is highly virulent, rapidly mutating and has a tendency to cross the species boundaries such as from bats to humans through the evolution and natural selection from intermediate host. In this review we tried to summarize the overall picture of SARS-CoV-2 including origin/ emergence, epidemiology, pathogenesis, genome organization, comparative analysis with other CoVs, infection and replication mechanism along with cellular tropism and immunopathogenesis which will provide a brief panoramic view about the virus and disease.
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Affiliation(s)
- Sweta Singh
- Division of Stem Cell and Gene Therapy, Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Mazumdar Road, Delhi, 110054, India
| | - Rakesh Pandey
- Division of Stem Cell and Gene Therapy, Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Mazumdar Road, Delhi, 110054, India
| | - Sarika Tomar
- Division of Stem Cell and Gene Therapy, Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Mazumdar Road, Delhi, 110054, India
| | - Raunak Varshney
- Division of Cyclotron and Radiopharmaceutical Sciences, Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Mazumdar Road, Delhi, 110054, India
| | - Darshika Sharma
- Division of Stem Cell and Gene Therapy, Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Mazumdar Road, Delhi, 110054, India
- Meerut Institute of Engineering and Technology, Meerut, India
| | - Gurudutta Gangenahalli
- Division of Stem Cell and Gene Therapy, Institute of Nuclear Medicine and Allied Sciences, Brig. S. K. Mazumdar Road, Delhi, 110054, India.
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9
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Campbell C, Andersson MI, Ansari MA, Moswela O, Misbah SA, Klenerman P, Matthews PC. Risk of Reactivation of Hepatitis B Virus (HBV) and Tuberculosis (TB) and Complications of Hepatitis C Virus (HCV) Following Tocilizumab Therapy: A Systematic Review to Inform Risk Assessment in the COVID-19 Era. Front Med (Lausanne) 2021; 8:706482. [PMID: 34490299 PMCID: PMC8417527 DOI: 10.3389/fmed.2021.706482] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/23/2021] [Indexed: 12/15/2022] Open
Abstract
Objectives: Tocilizumab (TCZ), an IL-6 receptor antagonist, is used in the treatment of severe COVID-19 caused by infection with SARS-CoV-2. However, unintended consequences of TCZ therapy include reactivation of tuberculosis (TB) or hepatitis B virus (HBV), and worsening of hepatitis C virus (HCV). We set out to assimilate existing data for these complications, in order to help inform evidence-based risk assessments for the use of TCZ, and thus to reduce the risk of serious but preventable complications. Methods: We searched the global WHO database of Individual Case Safety Reports (ICSRs) and adverse drug reactions (ADRs) ("VigiBase") and undertook a systematic literature review, in accordance with PRISMA guidelines. We generated mean cumulative incidence estimates for infection complications. Results: Mean cumulative incidence of HBV and TB were 3.3 and 4.3%, respectively, in patients receiving TCZ. Insufficient data were available to generate estimates for HCV. These estimates derive from heterogeneous studies pre-dating SARS-CoV-2, with differing epidemiology and varied approaches to screening and prophylaxis, so formal meta-analysis was not possible. Conclusions: We underline the need for careful individual risk assessment prior to TCZ prescription, and present an algorithm to guide clinical stratification. There is an urgent need for ongoing collation of safety data as TCZ therapy is used in COVID.
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Affiliation(s)
- Cori Campbell
- Nuffield Department of Medicine, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
| | - Monique I. Andersson
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
- Nuffield Department of Clinical Laboratory Sciences, University of Oxford, Oxford, United Kingdom
| | - M. Azim Ansari
- Nuffield Department of Medicine, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
- Wellcome Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - Olivia Moswela
- Pharmacy Department, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
| | - Siraj A. Misbah
- Department of Clinical Immunology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
| | - Paul Klenerman
- Nuffield Department of Medicine, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
| | - Philippa C. Matthews
- Nuffield Department of Medicine, University of Oxford, Medawar Building for Pathogen Research, Oxford, United Kingdom
- Department of Infectious Diseases and Microbiology, Oxford University Hospitals NHS Foundation Trust, John Radcliffe Hospital, Oxford, United Kingdom
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10
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Liu ZH, Niu FJ, Xie YX, Xie SM, Liu YN, Yang YY, Zhou CZ, Wan XH. A review: Natural polysaccharides from medicinal plants and microorganisms and their anti-herpetic mechanism. Biomed Pharmacother 2020; 129:110469. [DOI: 10.1016/j.biopha.2020.110469] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 12/11/2022] Open
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11
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McGonagle D, Sharif K, O'Regan A, Bridgewood C. The Role of Cytokines including Interleukin-6 in COVID-19 induced Pneumonia and Macrophage Activation Syndrome-Like Disease. Autoimmun Rev 2020; 19:102537. [PMID: 32251717 PMCID: PMC7195002 DOI: 10.1016/j.autrev.2020.102537] [Citation(s) in RCA: 1138] [Impact Index Per Article: 284.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 03/30/2020] [Indexed: 02/08/2023]
Abstract
Severe COVID-19 associated pneumonia patients may exhibit features of systemic hyper-inflammation designated under the umbrella term of macrophage activation syndrome (MAS) or cytokine storm, also known as secondary haemophagocytic lymphohistocytosis (sHLH). This is distinct from HLH associated with immunodeficiency states termed primary HLH -with radically different therapy strategies in both situations. COVID-19 infection with MAS typically occurs in subjects with adult respiratory distress syndrome (ARDS) and historically, non-survival in ARDS was linked to sustained IL-6 and IL-1 elevation. We provide a model for the classification of MAS to stratify the MAS-like presentation in COVID-19 pneumonia and explore the complexities of discerning ARDS from MAS. We discuss the potential impact of timing of anti-cytokine therapy on viral clearance and the impact of such therapy on intra-pulmonary macrophage activation and emergent pulmonary vascular disease.
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Affiliation(s)
- Dennis McGonagle
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, UK; National Institute for Health Research (NIHR) Leeds Biomedical Research Centre (BRC), Leeds Teaching Hospitals, Leeds, UK.
| | - Kassem Sharif
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, UK; Sheba Medical Center, Tel Aviv, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anthony O'Regan
- National University of Ireland, Saolta University Healthcare Group, Galway, Ireland
| | - Charlie Bridgewood
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), University of Leeds, Leeds, UK
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12
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Magro G. SARS-CoV-2 and COVID-19: Is interleukin-6 (IL-6) the 'culprit lesion' of ARDS onset? What is there besides Tocilizumab? SGP130Fc. Cytokine X 2020; 2:100029. [PMID: 32421092 PMCID: PMC7224649 DOI: 10.1016/j.cytox.2020.100029] [Citation(s) in RCA: 126] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/02/2020] [Accepted: 05/11/2020] [Indexed: 02/07/2023] Open
Abstract
Since the outbreak of COVID-19 many studies have been published showing possible therapies, here the author discusses the end of stage disease related drugs, like Tocilizumab which is currently being used in ARDS patients. In some patients, disease progression leads to an enormous secretion of cytokines, known as cytokine storm, among those cytokines IL-6 plays an important role. Here the author shows how IL-6 has both pro and anti-inflammatory properties, depending on the pathway of transduction: soluble (trans-signaling) or membrane-related (classic signaling), and suggests how targeting only the pro-inflammatory pathway, with SGP130Fc, could be a better option then targeting them both. Other possible IL-6 pathway inhibitors such as Ruxolitinib and Baricinitib are then analyzed, underlying how they lack the benefit of targeting only the pro-inflammatory pathway.
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Affiliation(s)
- Giuseppe Magro
- Department of Medical and Surgical Sciences, University "Magna Græcia" of Catanzaro, Italy
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13
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Civra A, Colzani M, Cagno V, Francese R, Leoni V, Aldini G, Lembo D, Poli G. Modulation of cell proteome by 25-hydroxycholesterol and 27-hydroxycholesterol: A link between cholesterol metabolism and antiviral defense. Free Radic Biol Med 2020; 149:30-36. [PMID: 31525455 PMCID: PMC7126780 DOI: 10.1016/j.freeradbiomed.2019.08.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/19/2019] [Accepted: 08/30/2019] [Indexed: 12/11/2022]
Abstract
Physiological cholesterol metabolism implies the generation of a series of oxidized derivatives, whose oxysterols are by far the most investigated ones for their potential multifaceted involvement in human pathophysiology. In this regard, noteworthy is the broad antiviral activity displayed by defined side chain oxysterols, in particular 25-hydroxycholesterol (25HC) and 27-hydroxycholesterol (27HC). Although their antiviral mechanism(s) may vary depending on virus/host interaction, these oxysterols share the common feature to hamper viral replication by interacting with cellular proteins. Here reported is the first analysis of the modulation of a cell proteome by these two oxysterols, that, besides yielding additional clues about their potential involvement in the regulation of sterol metabolism, provides novelinsights about the mechanism underlying the inhibition of virus entry and trafficking within infected cells. We show here that both 25HC and 27HC can down-regulate the junction adhesion molecule-A (JAM-A) and the cation independent isoform of mannose-6-phosphate receptor (MPRci), two crucial molecules for the replication of all those viruses that exploit adhesion molecules and the endosomal pathway to enter and diffuse within target cells.
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Affiliation(s)
- Andrea Civra
- Department of Clinical and Biological Sciences, University of Torino at San Luigi Hospital, Orbassano, Torino, Italy.
| | - Mara Colzani
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Milan, Italy.
| | - Valeria Cagno
- Department of Molecular Microbiology, University of Geneva, Geneva, Switzerland.
| | - Rachele Francese
- Department of Clinical and Biological Sciences, University of Torino at San Luigi Hospital, Orbassano, Torino, Italy.
| | - Valerio Leoni
- Department of Laboratory Medicine, University of Milano-Bicocca, School of Medicine, Hospital of Desio, Milano, Italy.
| | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, Università degli Studi di Milano, Milan, Italy.
| | - David Lembo
- Department of Clinical and Biological Sciences, University of Torino at San Luigi Hospital, Orbassano, Torino, Italy.
| | - Giuseppe Poli
- Department of Clinical and Biological Sciences, University of Torino at San Luigi Hospital, Orbassano, Torino, Italy.
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14
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Zeng W, Zhang Y, Duan F, Lin T, Liu X, Li D, Wu K. Lipopolysaccharide enhances human herpesvirus 1 replication and IL-6 release in epithelial cells. Microb Pathog 2020; 140:103961. [PMID: 31904451 DOI: 10.1016/j.micpath.2019.103961] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 12/02/2019] [Accepted: 12/31/2019] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To investigate the effect of lipopolysaccharide (LPS) on human herpesvirus 1 (HHV-1) infection in epithelial cells. METHODS Two strains of HHV-1, HHV-1 F strain (HHV-1f) and HHV-1 strain-H129 with GFP knock-in (HHV-g4), were used to infect HCE-T and VERO cells at MOIs of 0.04 and 0.02, respectively. After 1 h, 0, 10, 50, and 100 μg/ml LPS was added to serum-free medium and the cells were cultured for up to 24 h. GFP fluorescence of HHV-g4 in cells was examined under a fluorescence microscope and imaged. HHV-1f titer was determined by quantitative real-time polymerase chain reaction (qPCR) in HCE-T cells and plaque assays in VERO cells. The expression of the viral ICP4 protein of HHV-1f was detected by Western blot assay. IL-6 and IL-10 levels in culture medium were determined by enzyme-linked immunosorbent assay (ELISA). RESULTS Similar changes but at different degrees were found in HCE-T and VERO cells that were infected with HHV-1. GFP fluorescence of HHV-g4 and cell lesions increased in a dose-dependent manner. Virus titer was also enhanced by LPS stimulation in HCE-T and VERO cells. ICP4 expression was promoted at higher LPS concentrations (P = 0.04). In addition, viral infection resulted in increased expression of IL-6 in a dose-dependent manner at 12 and 24 h (P = 0.01), while IL-10 expression was unaffected by either HHV-1 infection or LPS stimulation. CONCLUSION LPS promotes HHV-1 infection in epithelial cells, which suggests that gram-negative bacteria on ocular surfaces may aggravate HHV-1 infection.
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Affiliation(s)
- Weiting Zeng
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, the Key Lab of Ophthalmology and Visual Science of Guangdong, Sun Yat-sen University, Guangzhou, China
| | - Yafang Zhang
- Department of Ophthalmology, Hubei University of Science and Technology, Xianning, China
| | - Fang Duan
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, the Key Lab of Ophthalmology and Visual Science of Guangdong, Sun Yat-sen University, Guangzhou, China
| | - Tianlan Lin
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, the Key Lab of Ophthalmology and Visual Science of Guangdong, Sun Yat-sen University, Guangzhou, China
| | - Xiuping Liu
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, the Key Lab of Ophthalmology and Visual Science of Guangdong, Sun Yat-sen University, Guangzhou, China
| | - Dai Li
- Department of Ophthalmology, Hubei University of Science and Technology, Xianning, China.
| | - Kaili Wu
- Zhongshan Ophthalmic Center, State Key Laboratory of Ophthalmology, the Key Lab of Ophthalmology and Visual Science of Guangdong, Sun Yat-sen University, Guangzhou, China.
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15
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Mucosal CD8+ T cell responses induced by an MCMV based vaccine vector confer protection against influenza challenge. PLoS Pathog 2019; 15:e1008036. [PMID: 31525249 PMCID: PMC6763260 DOI: 10.1371/journal.ppat.1008036] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/26/2019] [Accepted: 08/21/2019] [Indexed: 12/21/2022] Open
Abstract
Cytomegalovirus (CMV) is a ubiquitous β-herpesvirus that establishes life-long latent infection in a high percentage of the population worldwide. CMV induces the strongest and most durable CD8+ T cell response known in human clinical medicine. Due to its unique properties, the virus represents a promising candidate vaccine vector for the induction of persistent cellular immunity. To take advantage of this, we constructed a recombinant murine CMV (MCMV) expressing an MHC-I restricted epitope from influenza A virus (IAV) H1N1 within the immediate early 2 (ie2) gene. Only mice that were immunized intranasally (i.n.) were capable of controlling IAV infection, despite the greater potency of the intraperitoneally (i.p.) vaccination in inducing a systemic IAV-specific CD8+ T cell response. The protective capacity of the i.n. immunization was associated with its ability to induce IAV-specific tissue-resident memory CD8+ T (CD8TRM) cells in the lungs. Our data demonstrate that the protective effect exerted by the i.n. immunization was critically mediated by antigen-specific CD8+ T cells. CD8TRM cells promoted the induction of IFNγ and chemokines that facilitate the recruitment of antigen-specific CD8+ T cells to the lungs. Overall, our results showed that locally applied MCMV vectors could induce mucosal immunity at sites of entry, providing superior immune protection against respiratory infections. Vaccines against influenza typically induce immune responses based on antibodies, small molecules that recognize the virus particles outside of cells and neutralize them before they infect a cell. However, influenza rapidly evolves, escaping immune recognition, and the fastest evolution is seen in the part of the virus that is recognized by antibodies. Therefore, every year we are confronted with new flu strains that are not recognized by our antibodies against the strains from previous years. The other branch of the immune system is made of killer T cells, which recognize infected cells and target them for killing. Influenza does not rapidly evolve to escape T cell killing; thus, vaccines inducing T-cell responses to influenza might provide long-term protection. We introduced an antigen from influenza into the murine cytomegalovirus (MCMV) and used it as a vaccine vector inducing killer T-cell responses of unparalleled strength. Our vector controls influenza replication and provides relief to infected mice, but only if we administered it through the nose, to activate killer T cells that will persist in the lungs close to the airways. Therefore, our data show that the subset of lung-resident killer T cells is sufficient to protect against influenza.
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16
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SOCS4 expressed by recombinant HSV protects against cytokine storm in a mouse model. Oncol Rep 2018; 41:1509-1520. [PMID: 30569160 PMCID: PMC6365695 DOI: 10.3892/or.2018.6935] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/30/2018] [Indexed: 12/26/2022] Open
Abstract
Oncolytic viruses are genetically engineered viruses designed for the treatment of solid tumors, and are often coupled with the antitumor immunity of the host. The challenge of using oncolytic herpes simplex virus (oHSV) as an efficacious oncolytic agent is the potential host tissue damage caused by the production of a range of cytokines following intratumoral oHSV injection. An HSV-suppressor of cytokine signaling 4 (SOCS4) recombinant virus was created to investigate whether it inhibits cytokine storm. Recombinant HSV-SOCS4 and HSV-1(F) were used to infect mice, and levels of several representative cytokines, including monocyte chemoattractant protein-1, interleukin (IL)-1β, tumor necrosis factor-α, IL-6 and interferon γ, in serum and bronchoalveolar lavage fluid (BALF) of infected mice were determined, and immune cells in BALF and spleen were enumerated. Lung damage, virus titers in the lung, body weight and survival rates of infected mice were also determined and compared between the two groups. The cytokine concentration of HSV-SOCS4-infected mice was significantly decreased compared with that of HSV-1(F)-infected mice in BALF and serum, and a smaller number of cluster of differentiation (CD)11b+ cells of BALF, and CD8+CD62L+ T cells and CD4+CD62L+ T cells of the spleen were also identified in HSV-SOCS4-infected mice. HSV-SOCS4-infected mice exhibited slight lung damage, a decrease in body weight loss and a 100% survival rate. The results of the present study indicated that SOCS4 protein may be a useful regulator to inhibit cytokine overproduction, and that HSV-SOCS4 may provide a possible solution to control cytokine storm and its consequences following induction by oncolytic virus treatment.
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17
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Secretome Screening Reveals Fibroblast Growth Factors as Novel Inhibitors of Viral Replication. J Virol 2018; 92:JVI.00260-18. [PMID: 29899088 DOI: 10.1128/jvi.00260-18] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 06/05/2018] [Indexed: 12/17/2022] Open
Abstract
Cellular antiviral programs can efficiently inhibit viral infection. These programs are often initiated through signaling cascades induced by secreted proteins, such as type I interferons, interleukin-6 (IL-6), or tumor necrosis factor alpha (TNF-α). In the present study, we generated an arrayed library of 756 human secreted proteins to perform a secretome screen focused on the discovery of novel modulators of viral entry and/or replication. The individual secreted proteins were tested for the capacity to inhibit infection by two replication-competent recombinant vesicular stomatitis viruses (VSVs) with distinct glycoproteins utilizing different entry pathways. Fibroblast growth factor 16 (FGF16) was identified and confirmed as the most prominent novel inhibitor of both VSVs and therefore of viral replication, not entry. Importantly, an antiviral interferon signature was completely absent in FGF16-treated cells. Nevertheless, the antiviral effect of FGF16 is broad, as it was evident on multiple cell types and also on infection by coxsackievirus. In addition, other members of the FGF family also inhibited viral infection. Thus, our unbiased secretome screen revealed a novel protein family capable of inducing a cellular antiviral state. This previously unappreciated role of the FGF family may have implications for the development of new antivirals and the efficacy of oncolytic virus therapy.IMPORTANCE Viruses infect human cells in order to replicate, while human cells aim to resist infection. Several cellular antiviral programs have therefore evolved to resist infection. Knowledge of these programs is essential for the design of antiviral therapeutics in the future. The induction of antiviral programs is often initiated by secreted proteins, such as interferons. We hypothesized that other secreted proteins may also promote resistance to viral infection. Thus, we tested 756 human secreted proteins for the capacity to inhibit two pseudotypes of vesicular stomatitis virus (VSV). In this secretome screen on viral infection, we identified fibroblast growth factor 16 (FGF16) as a novel antiviral against multiple VSV pseudotypes as well as coxsackievirus. Subsequent testing of other FGF family members revealed that FGF signaling generally inhibits viral infection. This finding may lead to the development of new antivirals and may also be applicable for enhancing oncolytic virus therapy.
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18
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Zhang Y, Cui N, Han N, Wu J, Cui Z, Su S. Depression of Vaccinal Immunity to Marek's Disease by Infection with Chicken Infectious Anemia Virus. Front Microbiol 2017; 8:1863. [PMID: 29018431 PMCID: PMC5622928 DOI: 10.3389/fmicb.2017.01863] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 09/12/2017] [Indexed: 01/26/2023] Open
Abstract
Marek’s disease (MD) has been occurring with increasing frequency in chickens in recent years. To our knowledge, however, there has been no report of the very virulent plus (vv+) MD virus (MDV) field isolate in China. Studies have shown that dual infection with immunosuppressive viruses such as chicken infectious anemia virus (CIAV) occurs frequently in chickens developing MD. In this study, we performed a designed set of in vivo experiments, which comprised five different groups of chickens, including the group of CVI988/Rispens-vaccinated chickens, the groups of CVI988/Rispens-vaccinated chickens infected with MDV or CIAV or both viruses (MDV and CIAV), and the group of MDV-challenged chickens. The effects of CIAV dual infection on the immunization of commercial MDV vaccine CVI988/Rispens were evaluated. The results show that infection of the SD15 strain of CIAV significantly reduced the weight and antibody titers to avian influenza virus (AIV)/Newcastle disease virus (NDV) inactivated vaccines of chickens immunized with the CVI988/Rispens, and resulted in the atrophy of thymus/bursa and the enlargement of spleen. The CVI988/Rispens vaccination conferred good immune protection for chickens challenged with 2000 PFU of the GX0101 strain of MDV. However, dual infection with SD15 significantly reduced the body weight, antibody titers induced by AIV/NDV inactivated vaccines and protective index of CVI988/Rispens, and resulted in the aggravation of the immunosuppression, mortality, and viremia of GX0101 in CVI988/Rispens-immunized/GX0101-challenged chickens. Overall, CIAV infection significantly reduced the protective effects of the CVI988/Rispens vaccine against MDV, implying that concurrent infection with CIAV may be a major contributor in the frequent attacks of MD in China in recent years.
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Affiliation(s)
- Yankun Zhang
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an, China
| | - Ning Cui
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an, China.,Institute of Animal Husbandry and Veterinary, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Ni Han
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an, China
| | - Jiayan Wu
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an, China
| | - Zhizhong Cui
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China
| | - Shuai Su
- College of Veterinary Medicine, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Tai'an, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Shandong Agricultural University, Tai'an, China
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19
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Heidari M, Delekta PC. Transcriptomic Analysis of Host Immune Response in the Skin of Chickens Infected with Marek's Disease Virus. Viral Immunol 2017; 30:377-387. [PMID: 28410454 DOI: 10.1089/vim.2016.0172] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Marek's disease virus (MDV), a highly cell-associated oncogenic α-herpesvirus, is the causative agent of T cell lymphoma and neuropathic disease called Marek's disease. The skin is the only anatomical site where infectious enveloped cell-free virions are produced and shed into the environment. Studies have demonstrated that MDV infection induces immunological responses within the skin, including the release of cytokines and the recruitment of T lymphocytes. The host immune response, however, is not sufficient to block replication and shedding of the virus particles from the skin. In this study, we examined the gene expression profiling in the skin tissues of MDV-infected chickens to identify viral-induced alterations in the host gene expression pattern. To identify these genes in an unbiased and comprehensive manner, we performed RNA-seq on skin samples of MDV-infected chickens at 10, 20, and 30 days postinfection (dpi). We identified 820, 1,333, and 1,571 upregulated genes in the skin of MDV-infected chickens at 10, 20, and 30 dpi, respectively. In addition, we identified 461, 878, and 1,751 downregulated genes corresponding to the same time points, respectively. Analysis of the upregulated genes resulted in the identification of multiple gene ontology (GO) categories, with most falling under the host immune response. Searching these immune related GO categories, we identified six genes, gga-let-7d, interleukin 22 receptor subunit alpha 2, tumor necrosis factor receptor superfamily member 21, Proline-serine-threonine phosphatase-interacting protein 2, Suppressor of cytokine signaling (SOCS)1, and SOCS3, with known immunosuppressive properties that are upregulated in the skin of MDV-infected chickens.
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Affiliation(s)
- Mohammad Heidari
- 1 Avian Disease and Oncology Laboratory, Agriculture Research Service , United States Department of Agriculture, East Lansing, Michigan
| | - Phillip C Delekta
- 2 Department of Microbiology and Molecular Genetics, Michigan State University , East Lansing, Michigan
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20
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Zhang J, Liu H, Wei B. Immune response of T cells during herpes simplex virus type 1 (HSV-1) infection. J Zhejiang Univ Sci B 2017; 18:277-288. [PMID: 28378566 PMCID: PMC5394093 DOI: 10.1631/jzus.b1600460] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 01/07/2017] [Indexed: 12/14/2022]
Abstract
Herpes simplex virus type 1 (HSV-1), a neurotropic member of the alphaherpes virus family, is among the most prevalent and successful human pathogens. HSV-1 can cause serious diseases at every stage of life including fatal disseminated disease in newborns, cold sores, eye disease, and fatal encephalitis in adults. HSV-1 infection can trigger rapid immune responses, and efficient inhibition and clearance of HSV-1 infection rely on both the innate and adaptive immune responses of the host. Multiple strategies have been used to restrict host innate immune responses by HSV-1 to facilitate its infection in host cells. The adaptive immunity of the host plays an important role in inhibiting HSV-1 infections. The activation and regulation of T cells are the important aspects of the adaptive immunity. They play a crucial role in host-mediated immunity and are important for clearing HSV-1. In this review, we examine the findings on T cell immune responses during HSV-1 infection, which hold promise in the design of new vaccine candidates for HSV-1.
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21
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Inhibition of herpes simplex-1 virus replication by 25-hydroxycholesterol and 27-hydroxycholesterol. Redox Biol 2017; 12:522-527. [PMID: 28359048 PMCID: PMC5374874 DOI: 10.1016/j.redox.2017.03.016] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 03/16/2017] [Accepted: 03/18/2017] [Indexed: 11/23/2022] Open
Abstract
Oxysterols are known pleiotropic molecules whose antiviral action has been recently discovered. Here reported is the activity of a panel of oxysterols against HSV-1 with the identification of a new mechanism of action. A marked antiviral activity not only of 25HC but also of 27HC against HSV-1 was observed either if the oxysterols were added before or after infection, suggesting an activity unrelated to the viral entry inhibition as proposed by previous literature. Therefore, the relation between the pro-inflammatory activity of oxysterols and the activation of NF-kB and IL-6 induced by HSV-1 in the host cell was investigated. Indeed, cell pre-incubation with oxysterols further potentiated IL-6 production as induced by HSV-1 infection with a consequent boost of the interleukin's total cell secretion. Further, a direct antiviral effect of IL-6 administration to HSV-1 infected cells was demonstrated, disclosing an additional mechanism of antiviral action by both 25HC and 27HC. 25HC and 27HC markedly inhibit HSV-1 replication in a standard cell culture system. Cell pre-incubation with oxysterols potentiates IL-6 production as induced by HSV-1. The concentration of IL-6 induced by oxysterols actually inhibits HSV-1 replication.
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22
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Saha D, Wakimoto H, Rabkin SD. Oncolytic herpes simplex virus interactions with the host immune system. Curr Opin Virol 2016; 21:26-34. [PMID: 27497296 DOI: 10.1016/j.coviro.2016.07.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 07/11/2016] [Accepted: 07/13/2016] [Indexed: 12/28/2022]
Abstract
Oncolytic viruses (OVs), like oncolytic herpes simplex virus (oHSV), are genetically engineered to selectively replicate in and kill cancer cells, while sparing normal cells. Initial OV infection, cell death, and subsequent OV propagation within the tumor microenvironment leads to a cascade of host responses (innate and adaptive), reflective of natural anti-viral immune responses. These host-virus interactions are critical to the balance between OV activities, anti-viral immune responses limiting OV, and induction of anti-tumor immunity. The host response against oHSV is complex, multifaceted, and modulated by the tumor microenvironment and immunosuppression. As a successful pathogen, HSV has multiple mechanisms to evade such host responses. In this review, we will discuss these mechanisms and HSV evasion, and how they impact oHSV therapy.
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Affiliation(s)
- Dipongkor Saha
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Hiroaki Wakimoto
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Samuel D Rabkin
- Brain Tumor Research Center, Department of Neurosurgery, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States.
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23
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Komura T, Ohta H, Nakai R, Seishima J, Yamato M, Miyazawa M, Kaji K, Marukawa Y, Kagaya T, Kitagawa K, Kawashima A, Kaneko S, Unoura M. Cytomegalovirus Reactivation Induced Acute Hepatitis and Gastric Erosions in a Patient with Rheumatoid Arthritis under Treatment with an Anti-IL-6 Receptor Antibody, Tocilizumab. Intern Med 2016; 55:1923-7. [PMID: 27432105 DOI: 10.2169/internalmedicine.55.5981] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Tocilizumab, an anti-human interleukin 6 receptor (IL-6R) monoclonal antibody, is widely used to treat rheumatoid arthritis (RA) and is expected to exhibit clinical efficacy when used to treat other autoimmune diseases. However, a risk of opportunistic infection is occasionally recognized. A 54-year-old woman had received an oral corticosteroid and methotrexate to treat RA. Despite receiving these treatments, she received additional treatment with tocilizumab due to poor control of the disease activity. She presented at our hospital with a high fever and epigastralgia 19 days after receiving this treatment. A laboratory evaluation revealed liver injury and cytomegalovirus (CMV) viremia. Abdominal ultrasonography and computed tomography (CT) revealed hepatosplenomegaly, but no ascites. Upper gastrointestinal endoscopy revealed gastric erosions induced by CMV, which were confirmed immunohistochemically. Hence, we diagnosed the patient with CMV reactivation-induced acute hepatitis and gastric erosions under tocilizumab treatment. She received an anti-cytomegalovirus drug, ganciclovir, for 14 days due to her viremia and impaired general condition, which was suggestive of a severe infection. Her general condition subsequently improved, the liver function test results normalized, and the gastric erosions disappeared. In conclusion, although tocilizumab is very useful for treating certain autoimmune and inflammatory diseases, and will be prescribed more widely in the future, associated CMV infections must be closely monitored, as these can be lethal.
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Affiliation(s)
- Takuya Komura
- Department of Gastroenterology, National Hospital Organization Kanazawa Medical Center, Japan
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24
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Herpes Simplex Virus 1 Suppresses the Function of Lung Dendritic Cells via Caveolin-1. CLINICAL AND VACCINE IMMUNOLOGY : CVI 2015; 22:883-95. [PMID: 26018534 DOI: 10.1128/cvi.00170-15] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 05/20/2015] [Indexed: 12/24/2022]
Abstract
Caveolin-1 (Cav-1), the principal structural protein of caveolae, has been implicated as a regulator of virus-host interactions. Several viruses exploit caveolae to facilitate viral infections. However, the roles of Cav-1 in herpes simplex virus 1 (HSV-1) infection have not fully been elucidated. Here, we report that Cav-1 downregulates the expression of inducible nitric oxide synthase (iNOS) and the production of nitric oxide (NO) in dendritic cells (DCs) during HSV-1 infection. As a result, Cav-1 deficiency led to an accelerated elimination of virus and less lung pathological change following HSV-1 infection. This protection was dependent on iNOS and NO production in DCs. Adoptive transfer of DCs with Cav-1 knockdown was sufficient to confer the protection to wild-type (WT) mice. In addition, Cav-1 knockout (KO) (Cav-1(-/-)) mice treated with an iNOS inhibitor exhibited significantly reduced survival compared to that of the nontreated controls. We found that Cav-1 colocalized with iNOS and HSV-1 in caveolae in HSV-1-infected DCs, suggesting their interaction. Taken together, our results identified Cav-1 as a novel regulator utilized by HSV-1 to evade the host antiviral response mediated by NO production. Therefore, Cav-1 might be a valuable target for therapeutic approaches against herpesvirus infections.
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25
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Elewa RM, Abdallah MA, Zouboulis CC. Age-associated skin changes in innate immunity markers reflect a complex interaction between aging mechanisms in the sebaceous gland. J Dermatol 2015; 42:467-76. [DOI: 10.1111/1346-8138.12793] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 12/21/2014] [Indexed: 01/16/2023]
Affiliation(s)
- Rana M. Elewa
- Departments of Dermatology, Venereology, Allergology and Immunology; Dessau Medical Center; Dessau Germany
- Departments of Dermatology, Venereology and Andrology; Ain Shams University; Faculty of Medicine; Cairo Egypt
| | - Marwa A. Abdallah
- Departments of Dermatology, Venereology and Andrology; Ain Shams University; Faculty of Medicine; Cairo Egypt
| | - Christos C. Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology; Dessau Medical Center; Dessau Germany
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26
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Gilbert KM, Reisfeld B, Zurlinden TJ, Kreps MN, Erickson SW, Blossom SJ. Modeling toxicodynamic effects of trichloroethylene on liver in mouse model of autoimmune hepatitis. Toxicol Appl Pharmacol 2014; 279:284-293. [PMID: 25026505 PMCID: PMC4171219 DOI: 10.1016/j.taap.2014.07.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 06/27/2014] [Accepted: 07/06/2014] [Indexed: 01/01/2023]
Abstract
Chronic exposure to industrial solvent and water pollutant trichloroethylene (TCE) in female MRL+/+mice generates disease similar to human autoimmune hepatitis. The current study was initiated to investigate why TCE-induced autoimmunity targeted the liver. Compared to other tissues the liver has an unusually robust capacity for repair and regeneration. This investigation examined both time-dependent and dose-dependent effects of TCE on hepatoprotective and pro-inflammatory events in liver and macrophages from female MRL+/+mice. After a 12-week exposure to TCE in drinking water a dose-dependent decrease in macrophage production of IL-6 at both the transcriptional and protein level was observed. A longitudinal study similarly showed that TCE inhibited macrophage IL-6 production. In terms of the liver, TCE had little effect on expression of pro-inflammatory genes (Tnfa, Saa2 or Cscl1) until the end of the 40-week exposure. Instead, TCE suppressed hepatic expression of genes involved in IL-6 signaling (Il6r, gp130, and Egr1). Linear regression analysis confirmed liver histopathology in the TCE-treated mice correlated with decreased expression of Il6r. A toxicodynamic model was developed to estimate the effects of TCE on IL-6 signaling and liver pathology under different levels of exposure and rates of repair. This study underlined the importance of longitudinal studies in mechanistic evaluations of immuntoxicants. It showed that later-occurring liver pathology caused by TCE was associated with early suppression of hepatoprotection rather than an increase in conventional pro-inflammatory events. This information was used to create a novel toxicodynamic model of IL-6-mediated TCE-induced liver inflammation.
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Affiliation(s)
- Kathleen M Gilbert
- University of Arkansas for Medical Sciences, Arkansas Children's Hospital Research Institute, Little Rock, AR 72202, USA.
| | | | | | - Meagan N Kreps
- University of Arkansas for Medical Sciences, Arkansas Children's Hospital Research Institute, Little Rock, AR 72202, USA.
| | - Stephen W Erickson
- University of Arkansas for Medical Sciences, Arkansas Children's Hospital Research Institute, Little Rock, AR 72202, USA.
| | - Sarah J Blossom
- University of Arkansas for Medical Sciences, Arkansas Children's Hospital Research Institute, Little Rock, AR 72202, USA.
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Altered expression of cytokines in mice infected intranasally with two syncytial variants of Herpes simplex virus type 1. Microb Pathog 2014; 71-72:68-72. [PMID: 24768928 DOI: 10.1016/j.micpath.2014.04.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 04/11/2014] [Accepted: 04/15/2014] [Indexed: 11/22/2022]
Abstract
Immune evasion strategies are important for the onset and the maintenance of viral infections. Many viruses have evolved mechanisms to counteract or suppress the host immune response. We have previously characterized two syncytial (syn) variants of Herpes simplex 1 (HSV-1) strain F, syn14-1 and syn17-2, obtained by selective pressure with a natural carrageenan. These variants showed a differential pathology in vaginal and respiratory mucosa infection in comparison with parental strain. In this paper, we evaluated the modulation of immune response in respiratory mucosa by these HSV-1 variants. We observed altered levels of Tumor Necrosis Factor-α and Interleukin-6 in lungs of animals infected with the syn14-1 and syn17-2 variants compared with the parental strain. Also, we detected differences in the recruitment of immune cells to the lung in syn variants infected mice. Both variants exhibit one point mutation in the sequence of the gene of glycoprotein D detected in the ectodomain of syn14-1 and the cytoplasmic tail of syn17-2. Results obtained in the present study contribute to the characterization of HSV-1 syn variants and the participation of the cellular inflammatory response in viral pathogenesis.
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28
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Fielding C, Jones G, McLoughlin R, McLeod L, Hammond V, Uceda J, Williams A, Lambie M, Foster T, Liao CT, Rice C, Greenhill C, Colmont C, Hams E, Coles B, Kift-Morgan A, Newton Z, Craig K, Williams J, Williams G, Davies S, Humphreys I, O’Donnell V, Taylor P, Jenkins B, Topley N, Jones S. Interleukin-6 signaling drives fibrosis in unresolved inflammation. Immunity 2014; 40:40-50. [PMID: 24412616 PMCID: PMC3919204 DOI: 10.1016/j.immuni.2013.10.022] [Citation(s) in RCA: 273] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Accepted: 10/28/2013] [Indexed: 02/06/2023]
Abstract
Fibrosis in response to tissue damage or persistent inflammation is a pathological hallmark of many chronic degenerative diseases. By using a model of acute peritoneal inflammation, we have examined how repeated inflammatory activation promotes fibrotic tissue injury. In this context, fibrosis was strictly dependent on interleukin-6 (IL-6). Repeat inflammation induced IL-6-mediated T helper 1 (Th1) cell effector commitment and the emergence of STAT1 (signal transducer and activator of transcription-1) activity within the peritoneal membrane. Fibrosis was not observed in mice lacking interferon-γ (IFN-γ), STAT1, or RAG-1. Here, IFN-γ and STAT1 signaling disrupted the turnover of extracellular matrix by metalloproteases. Whereas IL-6-deficient mice resisted fibrosis, transfer of polarized Th1 cells or inhibition of MMP activity reversed this outcome. Thus, IL-6 causes compromised tissue repair by shifting acute inflammation into a more chronic profibrotic state through induction of Th1 cell responses as a consequence of recurrent inflammation.
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Affiliation(s)
- Ceri A. Fielding
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Gareth W. Jones
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Rachel M. McLoughlin
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Louise McLeod
- Centre for Innate Immunity and Infectious Diseases, Monash Institute for Medical Research, Monash University, Clayton, VIC 3168, Australia
| | - Victoria J. Hammond
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Javier Uceda
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Anwen S. Williams
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Mark Lambie
- Department of Nephrology, University Hospital of North Staffordshire and Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent ST4 7QB, UK
| | - Thomas L. Foster
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Chia-Te Liao
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Christopher M. Rice
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Claire J. Greenhill
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Chantal S. Colmont
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Emily Hams
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Barbara Coles
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Ann Kift-Morgan
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Zarabeth Newton
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Katherine J. Craig
- Institute of Nephrology, Institute of Molecular and Experimental Medicine, School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, UK
| | - John D. Williams
- Institute of Nephrology, Institute of Molecular and Experimental Medicine, School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XN, UK
| | - Geraint T. Williams
- Section of Pathology, Institute of Cancer and Genetics, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Simon J. Davies
- Department of Nephrology, University Hospital of North Staffordshire and Institute for Science and Technology in Medicine, Keele University, Stoke-on-Trent ST4 7QB, UK
| | - Ian R. Humphreys
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Valerie B. O’Donnell
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Philip R. Taylor
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK
| | - Brendan J. Jenkins
- Centre for Innate Immunity and Infectious Diseases, Monash Institute for Medical Research, Monash University, Clayton, VIC 3168, Australia
| | - Nicholas Topley
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK.
| | - Simon A. Jones
- Cardiff Institute of Infection and Immunity, Cardiff University, School of Medicine, Heath Park, Cardiff CF14 4XN, UK,Corresponding author
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29
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Mitzel DN, Jaramillo RJ, Stout-Delgado H, Senft AP, Harrod KS. Human metapneumovirus inhibits the IL-6-induced JAK/STAT3 signalling cascade in airway epithelium. J Gen Virol 2013; 95:26-37. [PMID: 24114793 DOI: 10.1099/vir.0.055632-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The host cytokine IL-6 plays an important role in host defence and prevention of lung injury from various pathogens, making IL-6 an important mediator in the host's susceptibility to respiratory infections. The cellular response to IL-6 is mediated through a Janus kinase/signal transducer and activator of transcription 3 (JAK/STAT3) signal transduction pathway. Human metapneumovirus (hMPV) is an important causative agent of viral respiratory infections known to inhibit the IFN-mediated activation of STAT1. However, little is known about the interactions between this virus and other STAT signalling cascades. Herein, we showed that hMPV can attenuate the IL-6-mediated JAK/STAT3 signalling cascade in lung epithelial cells. HMPV inhibited a key event in this pathway by impeding the phosphorylation and nuclear translocation of STAT3 in A549 cells and in primary normal human bronchial epithelial cells. Further studies established that hMPV interrupted the IL-6-induced JAK/STAT pathway early in the signal transduction pathway by blocking the phosphorylation of JAK2. By antagonizing the IL-6-mediated JAK/STAT3 pathway, hMPV perturbed the expression of IL-6-inducible genes important for apoptosis, cell differentiation and growth. Infection with hMPV also differentially regulated the effects of IL-6 on apoptosis. Thus, hMPV regulation of these genes could usurp the protective roles of IL-6, and these data provide insight into an important element of viral pathogenesis.
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Affiliation(s)
- Dana N Mitzel
- Infectious Diseases Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Richard J Jaramillo
- Infectious Diseases Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Heather Stout-Delgado
- Pulmonary Fibrosis Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Albert P Senft
- Infectious Diseases Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
| | - Kevin S Harrod
- Infectious Diseases Program, Lovelace Respiratory Research Institute, Albuquerque, NM, USA
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Mast cells play a key role in host defense against herpes simplex virus infection through TNF-α and IL-6 production. J Invest Dermatol 2013; 133:2170-9. [PMID: 23528820 DOI: 10.1038/jid.2013.150] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 02/19/2013] [Accepted: 03/05/2013] [Indexed: 12/18/2022]
Abstract
The essential contribution of mast cells (MCs) to bacterial host defense has been well established; however, little is known about their role in viral infections in vivo. Here, we found that intradermal injection with herpes simplex virus 2 (HSV-2) into MC-deficient Kit(W/Wv) mice led to increased clinical severity and mortality with elevated virus titers in HSV-infected skins. Ex vivo HSV-specific tetramer staining assay demonstrated that MC deficiency did not affect the frequency of HSV-specific cytotoxic T lymphocytes (CTLs) in draining lymph nodes. Moreover, the high mortality in Kit(W/W-v) mice was completely reversed by intradermal reconstitution with bone marrow-derived MCs (BMMCs) from wild-type, but not TNF(-/-) or IL-6(-/-) mice, indicating that MCs or, more specifically, MC-derived tumor necrosis factor (TNF) and IL-6 can protect mice from HSV-induced mortality. However, HSV did not directly induce TNF-α or IL-6 production by BMMCs; supernatants from HSV-infected keratinocytes induced the production of these cytokines by BMMCs without degranulation. Furthermore, IL-33 expression was induced in HSV-infected keratinocytes, and blocking the IL-33 receptor T1/ST2 on BMMCs significantly reduced TNF-α and IL-6 production by BMMCs. These results indicate the involvement of MCs in host defense at HSV-infected sites through TNF-α and IL-6 production, which is induced by keratinocyte-derived IL-33.
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31
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Cox MA, Kahan SM, Zajac AJ. Anti-viral CD8 T cells and the cytokines that they love. Virology 2013; 435:157-69. [PMID: 23217625 DOI: 10.1016/j.virol.2012.09.012] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 09/10/2012] [Indexed: 12/01/2022]
Abstract
Viral infections cause an immunological disequilibrium that provokes CD8 T cell responses. These cells play critical roles in purging acute infections, limiting persistent infections, and conferring life-long protective immunity. At every stage of the response anti-viral CD8 T cells are sensitive to signals from cytokines. Initially cytokines operate as immunological warning signs that inform of the presence of an infection, and also influence the developmental choices of the responding cells. Later during the course of the response other sets of cytokines support the survival and maintenance of the differentiated anti-viral CD8 T cells. Although many cytokines promote virus-specific CD8 T cells, other cytokines can suppress their activities and thus favor viral persistence. In this review we discuss how select cytokines act to regulate anti-viral CD8 T cells throughout the response and influence the outcome of viral infections.
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Affiliation(s)
- Maureen A Cox
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Murphy EA, Davis JM, Brown AS, Carmichael MD, Ghaffar A, Mayer EP. Effects of oat β-glucan on the macrophage cytokine response to herpes simplex virus 1 infection in vitro. J Interferon Cytokine Res 2012; 32:362-7. [PMID: 22817337 DOI: 10.1089/jir.2011.0067] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Oat β-glucan can counteract the increased risk for Herpes Simplex Virus 1 (HSV-1) infection in mice, the effects of which have, at least in part, been attributed to macrophages. However, the specific responses of macrophages to oat β-glucan treatment in this model have yet to be elucidated. We examined the effects of varying doses of oat β-glucan on the pro-inflammatory cytokine response in both peritoneal and lung macrophages with and without exposure to HSV-1 infection in vitro. Peritoneal and lung macrophages were obtained from mice and cultured with varying concentrations of oat β-glucan (0 (control), 10, 100, and 1,000 μg) for 24 h and supernatants were collected. A standardized dose of HSV-1 was added for a second 24 h incubation period after which supernatants were again collected. Samples were analyzed for interleukin-1β (IL-1β), IL-6, and tumor necrosis factor α (TNF-α) using enzyme linked immunosorbent assay (ELISA). In most cases, oat β-glucan resulted in a dose-dependent increase in pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α) in lung and peritoneal macrophages with and without exposure to HSV-1 infection. When comparing across macrophage source, this response was greater for IL-1β and IL-6 in peritoneal macrophages and for TNF-α in lung macrophages. This may be a mechanism for the decreased risk for HSV-1 infection following oat β-glucan feedings in mice.
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Affiliation(s)
- E Angela Murphy
- Department of Pathology, Microbiology & Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina 29201, USA.
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33
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Inoculation of swine with foot-and-mouth disease SAP-mutant virus induces early protection against disease. J Virol 2011; 86:1316-27. [PMID: 22114339 DOI: 10.1128/jvi.05941-11] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Foot-and-mouth disease virus (FMDV) leader proteinase (L(pro)) cleaves itself from the viral polyprotein and cleaves the translation initiation factor eIF4G. As a result, host cell translation is inhibited, affecting the host innate immune response. We have demonstrated that L(pro) is also associated with degradation of nuclear factor κB (NF-κB), a process that requires L(pro) nuclear localization. Additionally, we reported that disruption of a conserved protein domain within the L(pro) coding sequence, SAP mutation, prevented L(pro) nuclear retention and degradation of NF-κB, resulting in in vitro attenuation. Here we report that inoculation of swine with this SAP-mutant virus does not cause clinical signs of disease, viremia, or virus shedding even when inoculated at doses 100-fold higher than those required to cause disease with wild-type (WT) virus. Remarkably, SAP-mutant virus-inoculated animals developed a strong neutralizing antibody response and were completely protected against challenge with WT FMDV as early as 2 days postinoculation and for at least 21 days postinoculation. Early protection correlated with a distinct pattern in the serum levels of proinflammatory cytokines in comparison to the levels detected in animals inoculated with WT FMDV that developed disease. In addition, animals inoculated with the FMDV SAP mutant displayed a memory T cell response that resembled infection with WT virus. Our results suggest that L(pro) plays a pivotal role in modulating several pathways of the immune response. Furthermore, manipulation of the L(pro) coding region may serve as a viable strategy to derive live attenuated strains with potential for development as effective vaccines against foot-and-mouth disease.
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Yao Y, Li J, Lu Z, Tong A, Wang W, Su X, Zhou Y, Mu B, Zhou S, Li X, Chen L, Gou L, Song H, Yang J, Wei Y. Proteomic analysis of the interleukin-4 (IL-4) response in hepatitis B virus-positive human hepatocelluar carcinoma cell line HepG2.2.15. Electrophoresis 2011; 32:2004-12. [PMID: 21739463 DOI: 10.1002/elps.201100147] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2011] [Revised: 04/19/2011] [Accepted: 04/25/2011] [Indexed: 02/05/2023]
Abstract
Hepatitis B virus (HBV) infection is the leading cause of liver cirrhosis and hepatocellular carcinoma worldwide. In recent decades, significant progress toward understanding the molecular virology and pathogenesis of HBV infection has been made. In addition, multiple treatment modalities have been developed for persons with HBV infection. In the present study, we demonstrated that IL-4 inhibits the expression of hepatitis B surface antigen and hepatitis B e antigen in a HBV stably transfected hepatocellular carcinoma cell line (HepG2.2.15). To reveal the anti-HBV mechanism of IL-4 by proteomics, 2-DE and MS technology were utilized to profile global changes in protein expression in HepG2.2.15 cells after IL-4 treatment. A total of 56 differentially expressed proteins were identified in IL-4-treated HepG2.2.15 cells. To find out the interaction of these changed proteins by bioinformatics, signaling network analysis with the STRING tool showed that the identified proteins are primarily involved in transcription and proteolysis. Taken together, these results offer valuable clues for understanding the molecular mechanisms of the IL-4-mediated anti-HBV response.
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Affiliation(s)
- Yuqin Yao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan, P R China
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35
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Emergence of Herpes Simplex Virus-1 Syncytial Variants With Altered Virulence for Mice After Selection With a Natural Carrageenan. Sex Transm Dis 2011. [DOI: 10.1097/olq.0b013e3182084d99] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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36
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Murphy EA, Davis JM, McClellan JL, Carmichael MD, Rooijen NV, Gangemi JD. Susceptibility to Infection and Inflammatory Response Following Influenza Virus (H1N1, A/PR/8/34) Challenge: Role of Macrophages. J Interferon Cytokine Res 2011; 31:501-8. [DOI: 10.1089/jir.2010.0143] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- E. Angela Murphy
- Department of Pathology, Microbiology, and Immunology, School of Medicine, University of South Carolina, Columbia, South Carolina
| | - J. Mark Davis
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina
| | - Jamie L. McClellan
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina
| | - Martin D. Carmichael
- Department of Exercise Science, University of South Carolina, Columbia, South Carolina
| | - Nico Van Rooijen
- Department of Cell Biology and Immunology, Vrije Universiteit of Amsterdam, Amsterdam, Netherlands
| | - J. David Gangemi
- Department of Microbiology and Molecular Medicine, Clemson University, Clemson, South Carolina
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