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Specialty: Virology

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Total 371 results found since Jan 2013.

Activation of platelet-derived growth factor receptor β in the severe fever with thrombocytopenia syndrome virus infection.
In this study, we screened the protein kinase inhibitors in inhibitory effects on the infection of Vero cells with SFTSV using InhibitorSelect™ Protein Kinase Library Series (Merck & Co., Inc., Kenilworth, NJ, USA). Several types of inhibitors targeted to platelet-derived growth factor receptor β (PDGFRβ) inhibited the infection of Vero, Huh7, and NIH3T3 cells with SFTSV in a dose-dependent manner within the noncytotoxic range. In addition, these protein kinase inhibitors also inhibited the infection of the target cells with SFTSV glycoprotein (SFTSV-GP) pseudotyped virus (SFTSVpv). Activation of PDGFRβ phosphoryl...
Source: Antiviral Research - August 30, 2020 Category: Virology Authors: Tani H, Kimura M, Yamada H, Fujii H, Taniguchi S, Shimojima M, Fukushi S, Morikawa S, Saijo M Tags: Antiviral Res Source Type: research

Persistent virus in the silkworm cell lines: Bombyx mori latent virus.
Abstract Bombyx mori latent virus (BmLV) is a positive, single-stranded insect RNA virus with a close relationship to plant tymoviruses and currently classified as an "unclassified" tymovirus. BmLV is accumulated at extremely high levels only in cell lines derived from the silkworm, Bombyx mori, but it does not lead to lethality and establishes persistent infections. It was unknown whether BmLV affects the Baculovirus Expression Vector System using Bombyx mori nucleopolyhedrovirus, and how BmLV replicates and establishes persistent infections in insect cell lines. In this review, I introduce the discovery of BmLV,...
Source: Uirusu. Journal of Virology - December 31, 2018 Category: Virology Authors: Iwanaga M Tags: Uirusu Source Type: research

Viruses, Vol. 12, Pages 1189: Are Viral Vectors Any Good for RNAi Antiviral Therapy?
m RNA interference (RNAi) represents a novel approach for alternative antiviral therapy. However, issues related to RNA delivery and stability have presented serious obstacles for obtaining good therapeutic efficacy. Viral vectors are capable of efficient delivery of RNAi as short interfering RNA (siRNA), short hairpin RNA (shRNA) and micro-RNA (miRNA). Efficacy in gene silencing for therapeutic applications against viral diseases has been demonstrated in various animal models. Rotavirus (RV) miR-7 can inhibit rotavirus replication by targeting the RV nonstructural protein 5. Viral gene silencing by targeting the RNAi ...
Source: Viruses - October 20, 2020 Category: Virology Authors: Kenneth Lundstrom Tags: Editorial Source Type: research

Viruses, Vol. 13, Pages 9: Characterization of a Novel Mitovirus of the Sand Fly Lutzomyia longipalpis Using Genomic and Virus –Host Interaction Signatures
Viruses, Vol. 13, Pages 9: Characterization of a Novel Mitovirus of the Sand Fly Lutzomyia longipalpis Using Genomic and Virus–Host Interaction Signatures Viruses doi: 10.3390/v13010009 Authors: Fonseca Ferreira da Silva Oliveira Marques Goes-Neto Aguiar Gruber Hematophagous insects act as the major reservoirs of infectious agents due to their intimate contact with a large variety of vertebrate hosts. Lutzomyia longipalpis is the main vector of Leishmania chagasi in the New World, but its role as a host of viruses is poorly understood. In this work, Lu. longipalpis RNA libraries were subject...
Source: Viruses - December 23, 2020 Category: Virology Authors: Fonseca Ferreira da Silva Oliveira Marques Goes-Neto Aguiar Gruber Tags: Article Source Type: research

Viruses, Vol. 13, Pages 154: The Capsid Protein of Rubella Virus Antagonizes RNA Interference in Mammalian Cells
In this study, we identified that the RuV capsid protein is a potent VSR that can efficiently suppress shRNA- and siRNA-induced RNAi in mammalian cells. Moreover, the VSR activity of the RuV capsid is dependent on its dimerization and double-stranded RNA (dsRNA)-binding activity. In addition, ectopic expression of the RuV capsid can effectively rescue the replication defect of a VSR-deficient virus or replicon, implying that the RuV capsid can act as a VSR in the context of viral infection. Together, our findings uncover that RuV encodes a VSR to evade antiviral RNAi response, which expands our understanding of RuV&amp...
Source: Viruses - January 21, 2021 Category: Virology Authors: Jiuyue Xu Jing Kong Bao Lyu Xiaotong Wang Qi Qian Xi Zhou Yang Qiu Tags: Article Source Type: research

Viruses, Vol. 13, Pages 270: Synthetic Messenger RNA-Based Vaccines: from Scorn to Hype
o In the race for a vaccine against SARS-CoV-2, the synthetic mRNA format has been shown to be the fastest one and proved to be safe and highly efficient, even at the very low dose of a few µg per injection. The mRNA vaccines are not new: vaccines that are based on attenuated mRNA viruses, such as Mumps, Measles, and Rubella, immunize by delivering their mRNAs into the cells of the vaccinated individual, who produces the viral proteins that then prime the immune response. Synthetic mRNA in liposomes can be seen as a modern, more refined, and thereby a safer version of those live attenuated RNA viruses. The anti-COVID-...
Source: Viruses - February 9, 2021 Category: Virology Authors: Steve Pascolo Tags: Review Source Type: research

Viruses, Vol. 13, Pages 288: Ubiquitin Ligase SMURF2 Interacts with Filovirus VP40 and Promotes Egress of VP40 VLPs
Ronald N. Harty Filoviruses Ebola (EBOV) and Marburg (MARV) are devastating high-priority pathogens capable of causing explosive outbreaks with high human mortality rates. The matrix proteins of EBOV and MARV, as well as eVP40 and mVP40, respectively, are the key viral proteins that drive virus assembly and egress and can bud independently from cells in the form of virus-like particles (VLPs). The matrix proteins utilize proline-rich Late (L) domain motifs (e.g., PPxY) to hijack specific host proteins that contain WW domains, such as the HECT family E3 ligases, to facilitate the last step of virus–cell separation. We...
Source: Viruses - February 12, 2021 Category: Virology Authors: Ariel Shepley-McTaggart Michael Patrick Schwoerer Cari A. Sagum Mark T. Bedford Chaitanya K. Jaladanki Hao Fan Joel Cassel Ronald N. Harty Tags: Article Source Type: research

Immunostimulatory siRNA with a uridine bulge leads to potent inhibition of HBV and activation of innate immunity
Hepatitis B virus (HBV) infection is difficult to cure. HBV-specific immune tolerance plays a key role in HBV persistence, and enhancing cellular and humoral immunity will improve the control of HBV infection....
Source: Virology Journal - February 18, 2021 Category: Virology Authors: Tingyu Lan, Zhiqiang Wei, Yulin He, Song Wan, Li Liu, Bin Cheng, Ruimin Li, Hongxia Chen, Guohua Liu and Zhongji Meng Tags: Research Source Type: research

Rat and human cytomegalovirus ORF116 encodes a virion envelope glycoprotein required for infectivity
Virology. 2021 Feb 9;557:23-33. doi: 10.1016/j.virol.2020.12.014. Online ahead of print.ABSTRACTHerpesviruses encode multiple glycoproteins required for different stages of viral attachment, fusion, and envelopment. The protein encoded by the human cytomegalovirus (HCMV) open reading frame UL116 forms a stable complex with glycoprotein H that is incorporated into virions. However, the function of this complex remains unknown. Herein, we characterize R116, the rat CMV (RCMV) putative homolog of UL116. Two R116 transcripts were identified in fibroblasts with three proteins expressed with molecular weights of 42, 58, and 82 k...
Source: Virology - February 18, 2021 Category: Virology Authors: Philippe Gatault Iris K A Jones Christine Meyer Craig Kreklywich Timothy Alexander Patricia P Smith Michael Denton Josh Powell Susan L Orloff Daniel N Streblow Source Type: research

Persistent virus in the silkworm cell lines: Bombyx mori latent virus
Uirusu. 2019;68(2):137-146. doi: 10.2222/jsv.68.137.ABSTRACTBombyx mori latent virus (BmLV) is a positive, single-stranded insect RNA virus with a close relationship to plant tymoviruses and currently classified as an "unclassified" tymovirus. BmLV is accumulated at extremely high levels only in cell lines derived from the silkworm, Bombyx mori, but it does not lead to lethality and establishes persistent infections. It was unknown whether BmLV affects the Baculovirus Expression Vector System using Bombyx mori nucleopolyhedrovirus, and how BmLV replicates and establishes persistent infections in insect cell lines. In this ...
Source: Uirusu. Journal of Virology - September 17, 2020 Category: Virology Authors: Masashi Iwanaga Source Type: research

Rat and human cytomegalovirus ORF116 encodes a virion envelope glycoprotein required for infectivity
Virology. 2021 Feb 9;557:23-33. doi: 10.1016/j.virol.2020.12.014. Online ahead of print.ABSTRACTHerpesviruses encode multiple glycoproteins required for different stages of viral attachment, fusion, and envelopment. The protein encoded by the human cytomegalovirus (HCMV) open reading frame UL116 forms a stable complex with glycoprotein H that is incorporated into virions. However, the function of this complex remains unknown. Herein, we characterize R116, the rat CMV (RCMV) putative homolog of UL116. Two R116 transcripts were identified in fibroblasts with three proteins expressed with molecular weights of 42, 58, and 82 k...
Source: Virology - February 18, 2021 Category: Virology Authors: Philippe Gatault Iris K A Jones Christine Meyer Craig Kreklywich Timothy Alexander Patricia P Smith Michael Denton Josh Powell Susan L Orloff Daniel N Streblow Source Type: research

Persistent virus in the silkworm cell lines: Bombyx mori latent virus
Uirusu. 2019;68(2):137-146. doi: 10.2222/jsv.68.137.ABSTRACTBombyx mori latent virus (BmLV) is a positive, single-stranded insect RNA virus with a close relationship to plant tymoviruses and currently classified as an "unclassified" tymovirus. BmLV is accumulated at extremely high levels only in cell lines derived from the silkworm, Bombyx mori, but it does not lead to lethality and establishes persistent infections. It was unknown whether BmLV affects the Baculovirus Expression Vector System using Bombyx mori nucleopolyhedrovirus, and how BmLV replicates and establishes persistent infections in insect cell lines. In this ...
Source: Uirusu. Journal of Virology - September 17, 2020 Category: Virology Authors: Masashi Iwanaga Source Type: research