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Infectious Disease: Enterovirus

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Total 22 results found since Jan 2013.

Inhibition of coxsackievirus infection in cardiomyocytes by small dsRNA targeting its cognate coxsackievirus adenovirus receptor.
Abstract Background & objectives: Coxsackievirus B (CVB), a member of human Enterovirus group, is the most common cause of viral myocarditis. Coxsackievirus adenovirus receptor (CAR) is identified as a key determinant for the entry of CVB in the target cells. Thus, blockade of receptor by RNA interference (RNAi) may inhibit the entry and pathogenesis of CVB in cardiac cells. The present study was aimed to determine the effect of CAR small dsRNA (siRNA) on coxsackieviral load and CAR expression in coxsackievirus-infected cardiomyocytes. Methods: Transfection efficiency in rat cardiomyocytes (H9c2) was dete...
Source: Indian J Med Res - October 1, 2017 Category: Research Authors: Sharma M, Mishra B, Saikia UN, Bahl A, Ratho RK Tags: Indian J Med Res Source Type: research

Susceptibility of Enterovirus-D68 to RNAi-mediated antiviral knockdown
Publication date: Available online 20 July 2019Source: Antiviral ResearchAuthor(s): Nicholas Klaiber, Michael A. McVoy, Wei ZhaoAbstractEnterovirus D68 (EV-D68) represents an emerging pathogen which has demonstrated a capacity for causing epidemic illness in pediatric and immunocompromised patients. With no effective antiviral treatment available, therapeutic interventions are currently limited to supportive care. Utilizing available genomic sequences from the 2014 B3 Epidemic EV-D68 clade and the 1962 Fermon EV-D68 strains, we performed in silico comparative genomic analysis, identifying several islands of phylogenetic co...
Source: Antiviral Therapy - July 21, 2019 Category: Virology Source Type: research

Susceptibility of Enterovirus-D68 to RNAi-mediated antiviral knockdown.
Abstract Enterovirus D68 (EV-D68) represents an emerging pathogen which has demonstrated a capacity for causing epidemic illness in pediatric and immunocompromised patients. With no effective antiviral treatment available, therapeutic interventions are currently limited to supportive care. Utilizing available genomic sequences from the 2014 B3 Epidemic EV-D68 clade and the 1962 Fermon EV-D68 strains, we performed in silico comparative genomic analysis, identifying several islands of phylogenetic conservation within the viral RNA-dependent RNA polymerase gene. The effects of transfecting short-interfering double-st...
Source: Antiviral Research - July 19, 2019 Category: Virology Authors: Klaiber N, McVoy MA, Zhao W Tags: Antiviral Res Source Type: research

Inhibition of iNOS protects cardiomyocytes against coxsackievirus B3-induced cell injury by suppressing autophagy.
CONCLUSION: The inhibition of iNOS protects cardiomyocytes against CVB3-induced cell injury by regulating autophagy and the JNK pathway, which may provide a novel therapeutic strategy for treating CVB3-induced myocarditis. PMID: 28499238 [PubMed - as supplied by publisher]
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - May 9, 2017 Category: Drugs & Pharmacology Authors: Qi L, Xin Q, Wenjun J Tags: Biomed Pharmacother Source Type: research

Heat shock protein 70 as a supplementary receptor facilitates enterovirus 71infections in vitro
In this study, siRNA interference technique and transgenic technique were used to investigate the interaction between HSP70 and EV71 virus. The result demonstrated that the cell surface HSP70 is not essential for EV71 infection but helps the initial binding of virus to host cells and that multiple receptors are involved during EV71 infection. In addition, HSP70 was upregulated in human neuroblastoma cells (SK-N-SH) infected with EV71.Graphical abstractEnterovirus 71 (EV71) is a causative agent of hand food and mouth disease (HFMD) in young children and it can cause the damage of nervous cells, cytokine storm and toxic subs...
Source: Microbial Pathogenesis - December 22, 2018 Category: Infectious Diseases Source Type: research

Heat shock protein 70 as a supplementary receptor facilitates enterovirus 71 infections in vitro
In this study, siRNA interference technique and transgenic technique were used to investigate the interaction between HSP70 and EV71 virus. The result demonstrated that the cell surface HSP70 is not essential for EV71 infection but helps the initial binding of virus to host cells and that multiple receptors are involved during EV71 infection. In addition, HSP70 was upregulated in human neuroblastoma cells (SK-N-SH) infected with EV71.Graphical abstractEnterovirus 71 (EV71) is a causative agent of hand food and mouth disease (HFMD) in young children and it can cause the damage of nervous cells, cytokine storm and toxic subs...
Source: Microbial Pathogenesis - December 30, 2018 Category: Infectious Diseases Source Type: research

Viruses, Vol. 7, Pages 6689-6706: Glucose-6-Phosphate Dehydrogenase Enhances Antiviral Response through Downregulation of NADPH Sensor HSCARG and Upregulation of NF-κB Signaling
This study examined the mechanism underlying this phenomenon by measuring the expression of antiviral genes—tumor necrosis factor alpha (TNF-α) and GTPase myxovirus resistance 1 (MX1)—in G6PD-knockdown cells upon human coronavirus 229E (HCoV-229E) and enterovirus 71 (EV71) infection. Molecular analysis revealed that the promoter activities of TNF-α and MX1 were downregulated in G6PD-knockdown cells, and that the IκB degradation and DNA binding activity of NF-κB were decreased. The HSCARG protein, a nicotinamide adenine dinucleotide phosphate (NADPH) sensor and negative regulator of NF-κB, was upregulated in G6PD-k...
Source: Viruses - December 17, 2015 Category: Virology Authors: Yi-Hsuan WuDaniel ChiuHsin-Ru LinHsiang-Yu TangMei-Ling ChengHung-Yao Ho Tags: Article Source Type: research

Antiviral screen identifies EV71 inhibitors and reveals camptothecin-target, DNA topoisomerase 1 as a novel EV71 host factor
Publication date: Available online 17 April 2017 Source:Antiviral Research Author(s): Kan Xing Wu, Justin Jang-Hann Chu Enterovirus 71 (EV71) is one of the causative agents of hand, foot and mouth disease (HFMD) associated with severe neurological disease. EV71's pathogenesis remains poorly understood and the lack of approved antiviral has led to its emergence as a clinically important neurotropic virus. The goals of this study were to: (i) identify novel anti-EV71 compounds that may serve as lead molecules for therapeutics; and (ii) investigate their targets in downstream studies. We screened a 502-compound library of hi...
Source: Antiviral Therapy - April 17, 2017 Category: Virology Source Type: research

Antiviral screen identifies EV71 inhibitors and reveals camptothecin-target, DNA topoisomerase 1 as a novel EV71 host factor.
Abstract Enterovirus 71 (EV71) is one of the causative agents of hand, foot and mouth disease (HFMD) associated with severe neurological disease. EV71's pathogenesis remains poorly understood and the lack of approved antiviral has led to its emergence as a clinically important neurotropic virus. The goals of this study were to: (i) identify novel anti-EV71 compounds that may serve as lead molecules for therapeutics; and (ii) investigate their targets in downstream studies. We screened a 502-compound library of highly purified natural products for anti-EV71 activities in a cell-based immunofluorescence assay that w...
Source: Antiviral Research - April 17, 2017 Category: Virology Authors: Wu KX, Chu JJ Tags: Antiviral Res Source Type: research

Enterovirus 71 suppresses interferon responses by blocking Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signaling through inducing karyopherin-{alpha}1 degradation Immunology
In this study, we found that in cells pretreated with IFN-β, EV71 infection could still lead to a cytopathic effect, and the viral replication was not affected. The mechanism by which EV71 antagonizes interferon signaling, however, has been controversial. Our study indicated that EV71 infection did not inhibit phosphorylation of STAT1/2 induced by IFN-β stimulation, but p-STAT1/2 transport into the nucleus was significantly blocked. We showed that EV71 infection reduced the formation of STAT/karyopherin-α1 (KPNA1) complex upon interferon stimulation and that the virus down-regulated the expression of KPNA1, a nuclear lo...
Source: Journal of Biological Chemistry - June 16, 2017 Category: Chemistry Authors: Chunyang Wang, Menghuai Sun, Xinhui Yuan, Lianfu Ji, Yu Jin, Carol J. Cardona, Zheng Xing Tags: Microbiology Source Type: research

GSE99252 Human virus-derived small RNAs can confer antiviral immunity in mammals
Contributors : Yang Qiu ; Yanpeng Xu ; Yao Zhang ; Hui Zhou ; Yong-Qiang Deng ; Xiao-Feng Li ; Meng Miao ; Qiang Zhang ; Bo Zhong ; Yuanyang Hu ; Fu-Chun Zhang ; Ligang Wu ; Cheng-Feng Qin ; Xi ZhouSeries Type : Non-coding RNA profiling by high throughput sequencingOrganism : Homo sapiensRNA interference (RNAi) functions as a potent antiviral immunity in plants and invertebrates, however whether RNAi plays antiviral roles in mammals remains unclear. Here, using human enterovirus 71 (HEV71) as a model, we showed HEV71 3A protein as an authentic viral suppressor of RNAi during viral infection. When the 3A-mediated RNAi suppr...
Source: GEO: Gene Expression Omnibus - August 1, 2017 Category: Genetics & Stem Cells Tags: Non-coding RNA profiling by high throughput sequencing Homo sapiens Source Type: research

A food-responsive switch modulates TFEB and autophagy, and determines susceptibility to coxsackievirus infection and pancreatitis.
Abstract Almost a billion people worldwide are chronically undernourished. Herein, using a mouse model of coxsackievirus B3 (CVB3) infection, we report that a single day of food restriction (FR) markedly increases susceptibility to attenuated enterovirus infection, replication, and disease. These "pro-viral" effects, which are rapidly-reversed by the restoration of food, are mediated by several genes whose expression is altered by FR, and which support CVB3 replication. Central to this is TFEB, a protein whose expression and activation status are rapidly increased by FR. TFEB, which regulates the transcription of ...
Source: Autophagy - February 3, 2020 Category: Cytology Authors: Alirezaei M, Flynn CT, Garcia SD, Kimura T, Whitton JL Tags: Autophagy Source Type: research

Involvement of VCP/UFD1/Nucleolin in the viral entry of Enterovirus A species.
Abstract Valosin-containing protein (VCP) plays roles in various cellular activities. Recently, Enterovirus A71 (EVA71) infection was found to hijack the VCP protein. However, the mechanism by which VCP participates in the EVA71 life cycle remains unclear. Using chemical inhibitor, RNA interference and dominant negative mutant, we confirmed that the VCP and its ATPase activity were critical for EVA71 infection. To identify the factors downstream of VCP in enterovirus infection, 31 known VCP-cofactors were screened in the siRNA knockdown experiments. The results showed that UFD1 (ubiquitin recognition factor in ER ...
Source: Virus Research - April 10, 2020 Category: Virology Authors: Yan J, Wang M, Wang M, Dun Y, Zhu L, Yi Z, Zhang S Tags: Virus Res Source Type: research

BNIP3 deletion ameliorated enterovirus 71 infection-induced hand, foot and mouth disease via inhibiting apoptosis, autophagy, and inflammation in mice.
Abstract Bcl2/adenovirus E1B protein-interacting protein 3 (BNIP3) plays a key role in cellular response to stress by regulating apoptosis and selective autophagy. The present study aimed to determine the effects of BNIP3 on enterovirus (EV) 71 infection-induced hand, foot and mouth disease (HFMD), and the apoptosis, autophagy and inflammatory in mice and SH-SY5Y human neuroblastoma cell line. Neonatal BALB/c mice were injected with EV 71 strain to induce the HFMD. Western blotting and ELISA were used to measure the protein expression and cytokine levels. The BNIP3 mRNA and protein levels in the brain were increas...
Source: International Immunopharmacology - July 23, 2020 Category: Allergy & Immunology Authors: Zhu L, Hao X, Cao J, Xie X, Wang H Tags: Int Immunopharmacol Source Type: research

GSE179496 Targeting the Viral Suppressor of RNAi Provides a Novel Strategy for Antiviral Therapy
Contributors : Yuan Fang ; Zezhong Liu ; Yang Qiu ; Jing Kong ; Yuhong Fu ; Yujie Liu ; Chong Wang ; Jia Quan ; Qian Wang ; Wei Xu ; Lei Yin ; Jie Cui ; Yi Xu ; Stephen Curry ; Shibo Jiang ; Lu Lu ; Xi ZhouSeries Type : Non-coding RNA profiling by high throughput sequencingOrganism : Enterovirus A71RNA interference (RNAi) is an antiviral immunity conserved in diverse eukaryotes including mammals, while viruses encodes viral suppressors of RNAi (VSRs) as countermeasures. However, the physiological impact of RNAi on viral infection in mammals has not been fully assessed, and it also remains unknown whether antiviral RNAi can...
Source: GEO: Gene Expression Omnibus - July 31, 2021 Category: Genetics & Stem Cells Tags: Non-coding RNA profiling by high throughput sequencing Enterovirus A71 Source Type: research