نتایج جستجو برای: antiviral activity
تعداد نتایج: 1158350 فیلتر نتایج به سال:
Human immunodeficiency virus, type 1 (HIV-1) Vif protein plays an essential role in the regulation of the infectivity of HIV-1 virion. Vif functions to counteract an anti-HIV-1 cellular factor in non-permissive cells, CEM15/Apobec-3G, which shares a cytidine deaminase motif. CEM15/Apobec-3G deaminates dC to dU in the minus strand DNA of HIV-1, resulting in G to A hypermutation in the plus stran...
Antiviral activity of ginsenosides against coxsackievirus B3, enterovirus 71, and human rhinovirus 3
BACKGROUND Ginsenosides are the major components responsible for the biochemical and pharmacological actions of ginseng, and have been shown to have various biological activities. In this study, we investigated the antiviral activities of seven ginsenosides [protopanaxatriol (PT) type: Re, Rf, and Rg2; protopanaxadiol (PD) type: Rb1, Rb2, Rc, and Rd)] against coxsackievirus B3 (CVB3), enterovir...
Among the pleiotropic effects of human interferon are the inhibition of viral replication, the activation of natural killer cells, and the inhibition of cellular growth. Oxyphenbutazone, a nonsteroidal antiinflammatory agent, is a potent inhibitor of the antiviral activity of human alpha and beta interferons as determined by cytopathic effect and vesicular stomatitis virus synthesis and release...
Ledipasvir (LDV; GS-5885), a component of Harvoni (a fixed-dose combination of LDV with sofosbuvir [SOF]), is approved to treat chronic hepatitis C virus (HCV) infection. Here, we report key preclinical antiviral properties of LDV, including in vitro potency, in vitro resistance profile, and activity in combination with other anti-HCV agents. LDV has picomolar antiviral activity against genotyp...
Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne virus that is emerging as a significant human pathogen in many regions of the world, including Africa, Asia, and Europe. In this report, we describe a simple screening method for discovering new antiviral compounds directed against CCHFV. Antiviral activity was determined by assaying infected SW-13 cells (human adrenal gland carcinom...
Surfactant protein D (SP-D) plays important roles in innate host defense against influenza A virus (IAV) infection, in part by modifying interactions with neutrophils. Human neutrophil defensins (HNPs) inhibit infectivity of enveloped viruses, including IAV. Our goal in this study was to characterize antiviral interactions between SP-D and HNPs. Recombinant and/or natural forms of SP-D and rela...
Type I interferons (IFNs) signal through specific receptors to mediate expression of genes, which together confer a cellular antiviral state. Overexpression of the zinc finger antiviral protein (ZAP) imparts a cellular antiviral state against Retroviridae, Togaviridae, and Filoviridae virus family members. Since ZAP expression is induced by IFN, we utilized Sindbis virus (SINV) to investigate t...
Zinc metallopeptidase STE24 (ZMPSTE24) is a transmembrane metalloprotease whose catalytic activity is critical for processing lamin A on the inner nuclear membrane and clearing clogged translocons on the endoplasmic reticulum. We now report ZMPSTE24 is a virus-specific effector that restricts enveloped RNA and DNA viruses, including influenza A, Zika, Ebola, Sindbis, vesicular stomatitis, cowpo...
APOBEC proteins appeared in the cellular battle against HIV-1 as part of intrinsic cellular immunity. The antiretroviral activity of some of these proteins is overtaken by the action of HIV-1 Viral Infectivity Factor (Vif) protein. Since the discovery of APOBEC3G (A3G) as an antiviral factor, many advances have been made to understand its mechanism of action in the cell and how Vif acts in orde...
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