Abstract：
:Treatment of the chronic hepatitis C virus (HCV) infection is an unmet medical need, and the HCV NS3 serine protease (NS3-SP) has been used as an attractive target of antiviral screening against HCV. To find naturally chemical entities as lead compounds from which novel anti-HCV agents could be developed, bioassay-guided fractionation and isolation were performed on a crude ethanol extract from rhizomes of the Chinese medicinal herb Rhodiola kirilowii (Regel) Maxim using column chromatography (CC) techniques and in vitro inhibitory activity against HCV NS3-SP. The partition of the extract between water and different organic solvents led to the isolation and identification of 12 compounds in the ethyl acetate part which proved to be the most active. These compounds were tested for in vitro activity against HCV NS3-SP, among which four (-)-Epicatechin derivatives: 3,3'-Digalloylproprodelphinidin B2 (Rhodisin, 1); 3,3'-Digalloylprocyanidin B2 (2); (-)-Epigallocatechin-3-O-gallate (EGCG, 3); and (-)-Epicatechin-3-O-gallate (4, ECG) represented the most potent ones with IC(50) of 0.77, 0.91, 8.51, and 18.55 microM, respectively. Salidroside, the commonly known compounds, together with the other compounds showed no activity up to 100.0 microM. Methylation and acylation of the hydroxyl groups of 1-4 caused a decrease of activity. Cell viability and secreted alkaline phosphatase (SEAP) activity assays with 1-4 revealed little if any toxicity. These nonpeptide inhibitors of HCV NS3-SP might serve as potential candidate anti-HCV agents.
journal_name
Antiviral Resjournal_title
Antiviral researchauthors
Zuo G,Li Z,Chen L,Xu Xdoi
10.1016/j.antiviral.2007.06.001subject
Has Abstractpub_date
2007-10-01 00:00:00pages
86-92issue
1eissn
0166-3542issn
1872-9096pii
S0166-3542(07)00351-8journal_volume
76pub_type
杂志文章abstract：:Human adenoviruses are a common threat to immunocompromised patients, e.g., HIV-positive individuals or solid-organ and, in particular, allogeneic stem cell transplant recipients. Antiviral drugs have a limited effect on adenoviruses, and existing treatment modalities often fail to prevent fatal outcome. Silencing of ...
journal_title：Antiviral research
pub_type： 杂志文章
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abstract：:Antiviral medication is used for the treatment of severe influenza infections, of which the neuraminidase inhibitors (NAIs) are the most effective drugs, approved so far. Here, we investigated the antiviral efficacy of the peptidomimetic furin inhibitor MI-701 in combination with oseltamivir carboxylate and ribavirin ...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2015.05.006
更新日期：2015-08-01 00:00:00
abstract：:Oxymatrine (OMTR) is an anti-hepatitis drug used in China. Its mechanism of action is unknown. Recently, we found that OMTR inhibits hepatitis B virus (HBV) via down-regulating the expression of heat-stress cognate 70 (Hsc70), a host protein required for HBV DNA replication. Goal of this study was to assess the effect...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2011.01.005
更新日期：2011-03-01 00:00:00
abstract：:The first 230 residues of the 298-amino acid glycoprotein G of respiratory syncytial virus (RSV) are sufficient to confer complete resistance to challenge with live RSV, whereas the first 180 residues completely failed (Olmsted et al. (1989) J. Virol. 63, 411-420). The characterization of a protective epitope correspo...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/0166-3542(95)00053-4
更新日期：1995-12-01 00:00:00
abstract：:Herpes simplex virus-1 (HSV-1) infection is known to cause skin blisters, keratitis as well as deadly cases of encephalitis in some situations. Only a few therapeutic modalities are available for this globally prevalent infection. Very recently, a small molecule BX795 was identified as an inhibitor of HSV-1 protein sy...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2020.104814
更新日期：2020-08-01 00:00:00
abstract：:In the present study, the protective effect of 1T1, a lambda-carrageenan extracted from the red seaweed Gigartina skottsbergii was evaluated in a murine model of herpes simplex virus type 2 (HSV-2) genital infection. Six to eight-week-old female BALB/c mice were intravaginally inoculated with a lethal dose of HSV-2 (M...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2004.07.001
更新日期：2004-11-01 00:00:00
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journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/s0166-3542(02)00051-7
更新日期：2002-08-01 00:00:00
abstract：:Although alpha interferon (IFN-alpha) is of benefit in the treatment of viral hepatitis B, HBV replication has been refractory to the cytokine in commonly used hepatocyte-derived cell lines. In search for a cell culture system to study the mechanism by which IFN-alpha inhibits HBV replication, we infected a variety of...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2007.06.015
更新日期：2007-12-01 00:00:00
abstract：:Many aspects of the biology and epidemiology of influenza B viruses are far less studied than for influenza A viruses, and one of these aspects is efficacy and resistance to the clinically available antiviral drugs, the neuraminidase (NA) inhibitors (NAIs). Acute respiratory infections are one of the leading causes of...
journal_title：Antiviral research
pub_type： 杂志文章,评审
doi：10.1016/j.antiviral.2013.08.023
更新日期：2013-11-01 00:00:00
abstract：:Almost 30 years ago it was proposed that the selection for antiviral drug resistance should be used as an indicator of antiviral drug activity. In addition to discriminating between cellular toxicity and specific activity directed against a viral target, drug resistant mutants have been used to confirm the mechanism o...
journal_title：Antiviral research
pub_type： 杂志文章,评审
doi：10.1016/j.antiviral.2006.03.004
更新日期：2006-09-01 00:00:00
abstract：:Knowledge of drug protein-binding and blood cell partitioning may be important for evaluating the pharmacokinetic parameters of zidovudine, particularly because of its intracellular site of action and potential to induce side effects. Equilibrium dialysis studies of zidovudine were performed over 2 h to identify the e...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/0166-3542(93)90032-e
更新日期：1993-07-01 00:00:00
abstract：:Emergence of drug-resistant human cytomegalovirus (HCMV) strains is a substantial problem during treatment of HCMV infections in immunocompromised patients. The Z-isomers of 2-hydroxymethylcyclopropylidenemethyl adenine (synadenol) and guanine (synguanol) were previously shown to be potent inhibitors of AD169 and Town...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/s0166-3542(02)00129-8
更新日期：2002-12-01 00:00:00
abstract：:A major challenge in the development of vaccines against retroviruses is the induction of neutralizing antibodies since they prevent infection of the cells where the virus may persist. The transmembrane envelope (TM) protein contains highly conserved domains and seems to be a suitable target. To study whether vaccinat...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2010.11.011
更新日期：2011-01-01 00:00:00
abstract：:Human influenza viruses isolated from Australasia (Australia and New Zealand) and South East Asia were analysed to determine their sensitivity to the NA inhibitor drugs, zanamivir and oseltamivir. A total of 532 strains isolated between 1998 and 2002 were tested using a fluorescence-based assay to measure the relative...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2003.11.008
更新日期：2004-04-01 00:00:00
abstract：:Oligodeoxynucleotides (ODN) containing unmethylated CpG motifs are potent stimulators of the innate immune system, and are capable of aborting several infections in a non-specific manner. We here report studies of the capacity of such ODN to protect mice against infection with foot and mouth disease virus (FMDV). Susc...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2006.03.010
更新日期：2006-10-01 00:00:00
abstract：:Several nucleoside reverse transcriptase inhibitors are associated with mitochondrial toxicity resulting from inhibition of DNA polymerase-gamma. This study compared the effects on mitochondrial DNA of apricitabine (previously referred to as AVX754 or SPD754), a novel cytidine analogue under development for the treatm...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2007.05.004
更新日期：2007-10-01 00:00:00
abstract：:Childhood exanthema caused by different serotypes of coxsackievirus (CV-A) and enterovirus A71 (EV-A71) has become a serious global health problem; it is commonly known as hand, foot, and mouth disease (HFMD). Current EV-A71 vaccine clinical trials have demonstrated that human antibody responses generated by EV-A71 va...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2016.02.008
更新日期：2016-05-01 00:00:00
abstract：:Infection of captive macaques with simian immunodeficiency virus (SIV) and domestic cats with feline immunodeficiency virus (FIV), both discovered in the last five years, represent excellent animal models for infection of humans with the human immunodeficiency virus (HIV). Protection against challenge infection and pr...
journal_title：Antiviral research
pub_type： 杂志文章,评审
doi：10.1016/0166-3542(91)90009-g
更新日期：1991-05-01 00:00:00
abstract：DESIGN:The HIV latent CD4+ T cell reservoir is broadly recognized as a barrier to HIV cure. Induction of HIV expression using protein kinase C (PKC) agonists is one approach under investigation for reactivation of latently infected CD4+ T cells (Beans et al., 2013; Abreu et al., 2014; Jiang et al., 2014; Jiang and Dand...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2016.11.014
更新日期：2017-03-01 00:00:00
abstract：:We isolated a ganciclovir (GCV)-resistant human cytomegalovirus (HCMV) from a laboratory strain, AD169, and analysed the mutant. Attempts were also made to identify directly the mutated gene. The 50% inhibitory concentration (IC50) of GCV for the mutant strain was five times higher than that of the wild-type strain. T...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/s0166-3542(98)00051-5
更新日期：1998-12-01 00:00:00
abstract：:Trimming of the N-glycans attached to the envelope proteins of hepatitis B virus (HBV) is required in different steps of the viral life cycle. Inhibition of the host enzymes alpha-glucosidases, involved in the endoplasmic reticulum (ER)-associated processing of the N-linked glycans, results in misfolding of the HBV en...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2007.04.004
更新日期：2007-10-01 00:00:00
abstract：:Dolutegravir (S/GSK1349572) is a second-generation HIV-1 integrase inhibitor (INI) in advanced clinical development. It has shown good antiviral activity in most patients with prior raltegravir failure, although changes at the integrase codon 148, particularly when combined with other mutations, confer reduced suscept...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2011.03.178
更新日期：2011-06-01 00:00:00
abstract：:As has been established in rabbits, (E)-5-(2-bromovinyl)-2'-deoxyuridine (BVDU) is superior to 5-iodo-2'-deoxyuridine (IDU) in the topical treatment of epithelial HSV-1 (herpes simplex virus type 1) keratitis, and superior to 5-trifluoromethyl-2'-deoxyuridine (TFT) in the topical treatment of deep stromal HSV-1 kerati...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/0166-3542(84)90033-0
更新日期：1984-10-01 00:00:00
abstract：:We report the design, synthesis, and biological evaluation of a class of 1H-pyrido[2,1-b][1,3]benzothiazol-1-ones originated from compound 1, previously identified as anti-flavivirus agent. Some of the new compounds showed activity in low μM range with reasonable selectivity against Dengue 2, Yellow fever (Bolivia str...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2019.03.004
更新日期：2019-07-01 00:00:00
abstract：:Respiratory syncytial virus (RSV) is the major cause for respiratory tract disease in infants and young children. Currently, no licensed vaccine or a selective antiviral drug against RSV infections are available. Here, we describe a structure-based drug design approach that led to the synthesis of a novel series of zi...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2015.08.003
更新日期：2015-10-01 00:00:00
abstract：:The hepatitis B virus nucleocapsid or core antigen is extremely immunogenic during infection and after immunization. This review summarizes several features of the nucleocapsid which explain this exceptionally high immunogenicity: a unique three-dimensional folding, the presence of a region that interacts with immunog...
journal_title：Antiviral research
pub_type： 杂志文章,评审
doi：10.1016/j.antiviral.2003.08.011
更新日期：2003-10-01 00:00:00
abstract：:The biological response modifier 7-thia-8-oxoguanosine was evaluated in mice against the hepatotropic Adames strain of Punta Toro virus. When administered intraperitoneally in divided doses, significant protection from death was conferred at doses of 50 and 100 mg/kg/day given 24 and 17 h pre-virus inoculation, 25-100...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/0166-3542(91)90069-4
更新日期：1991-03-01 00:00:00
abstract：:The ability of hypericin to protect mice from splenomegaly resulting from infection with Friend leukemia virus (FLV) was re-examined in light of recent evidence showing that light is absolutely required for this drug's antiviral activity. FLV-induced splenomegaly was not prevented or ameliorated in mice injected with ...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/0166-3542(93)90048-n
更新日期：1993-06-01 00:00:00
abstract：:There are no drugs approved specifically to treat disseminated adenovirus (Ad) infections in humans. Cidofovir is active against Ad in cell culture, and it is used frequently in the clinic with disseminated infection in pediatric transplant patients; however, controlled clinical studies have not been conducted to prov...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2014.10.005
更新日期：2014-12-01 00:00:00
abstract：:Resveratrol (3,5,4'-trihydroxystilbene) is a natural component of certain foods, such as grapes, that has been shown to have anti-herpes simplex virus (HSV) activity in vitro. To determine if it is active in vivo, the abraded epidermis of SKH1 mice were infected with HSV-1 and topically treated with 12.5 or 25% resver...
journal_title：Antiviral research
pub_type： 杂志文章
doi：10.1016/j.antiviral.2003.07.001
更新日期：2004-01-01 00:00:00
