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1.
Arch Virol ; 153(6): 1175-9, 2008.
Article in English | MEDLINE | ID: mdl-18446424

ABSTRACT

Using recombination analysis, we identified a recombinant dengue virus type 1 strain, namely, GD23/95, with three recombination regions, located within the sequences of the prM/E junction, NS1, and NS3, respectively. The recombinant dengue virus was further confirmed by phylogenetic analysis based on its recombination and non-recombination regions. This appears to be the first study to confirm the existence of three recombination regions in a single dengue virus isolate and to report recombination between parent virus strains isolated from the same geographic area (Guangdong province, China). It is also the first to report breakpoints within the NS3 gene of dengue viruses.


Subject(s)
Dengue Virus/genetics , Dengue/epidemiology , Molecular Epidemiology , Viral Proteins/genetics , China/epidemiology , Humans , Recombination, Genetic , Viral Nonstructural Proteins/genetics
2.
Arch Virol ; 151(2): 379-85, 2006 Feb.
Article in English | MEDLINE | ID: mdl-16155726

ABSTRACT

Capsid-targeted viral inactivation (CTVI) has emerged as a conceptually powerful antiviral strategy that exploits viral structural proteins to target a destructive enzyme specifically into progeny virions. We have recently demonstrated the principle of CTVI against dengue virus infection and observed a modest therapeutic effect in vitro (Arch Virol 2005, 150: 659-669). Here we tested a prophylactic model of CTVI, in which mammalian cells stably expressing the dengue 2 virus capsid protein fused to a nuclease were infected with dengue virus and determined the effects on progeny virion infectivity. CTVI efficiently destroyed dengue 2 virus from within and decreased the infectious titers by 10(3)- to 10(4)-fold, suggesting that CTVI has potential in the prophylactic application for dengue virus infection.


Subject(s)
Capsid Proteins/genetics , Capsid Proteins/metabolism , Dengue Virus/metabolism , Dengue/therapy , Dengue/virology , Endonucleases/metabolism , Virus Inactivation , Animals , Cell Line , Cricetinae , Dengue Virus/genetics , Dengue Virus/growth & development , Endonucleases/genetics , Gene Expression , Genes, Viral , Recombinant Fusion Proteins/genetics , Recombinant Fusion Proteins/metabolism , Virus Assembly
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