Systematic name M3559
Brief description Interferon-inducible genes up-regulated in A549 cells (lung cancer) infected with a respiratory syncytial virus (RSV) that had its NS1 [GeneID=1494468] gene knocked down by RNAi.
Full description or abstract Respiratory syncytial virus (RSV) infection is one of the major causes of respiratory tract infection for which no vaccine or antiviral treatment is available. The RSV NS1 protein seems to antagonize the host interferon (IFN) response; however, its mechanism is unknown. Here, we used a plasmid-borne small interfering RNA targeting the NS1 gene (siNS1) to examine the role of NS1 in modulating RSV infection. RSV replication was reduced in A549 cells, but not IFN-deficient Vero cells, transfected with siNS1. siNS1 induced upregulated expression of IFN-beta and IFN-inducible genes in A549 cells. siNS1-transfected human dendritic cells, upon RSV infection, produced elevated type-1 IFN and induced differentiation of naive CD4+ T cells to T helper type 1 (TH1) cells. Mice treated intranasally with siNS1 nanoparticles before or after infection with RSV showed substantially decreased virus titers in the lung and decreased inflammation and airway reactivity compared to controls. Thus, siNS1 nanoparticles may provide an effective inhibition of RSV infection in humans.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 15619625   Authors: Zhang W,Yang H,Kong X,Mohapatra S,San Juan-Vergara H,Hellermann G,Behera S,Singam R,Lockey RF,Mohapatra SS
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Source species Homo sapiens
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Version history 3.0: First introduced

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