Flavivirus RNAi suppression: decoding non-coding RNA

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Abstract

Flaviviruses are important human pathogens that are transmitted by invertebrate vectors, mostly mosquitoes and ticks. During replication in their vector, flaviviruses are subject to a potent innate immune response known as antiviral RNA interference (RNAi). This defense mechanism is associated with the production of small interfering (si)RNA that lead to degradation of viral RNA. To what extent flaviviruses would benefit from counteracting antiviral RNAi is subject of debate. Here, the experimental evidence to suggest the existence of flavivirus RNAi suppressors is discussed. I will highlight the putative role of non-coding, subgenomic flavivirus RNA in suppression of RNAi in insect and mammalian cells. Novel insights from ongoing research will reveal how arthropod-borne viruses modulate innate immunity including antiviral RNAi.
Original languageEnglish
Pages (from-to)55-60
JournalCurrent Opinion in Virology
Volume7
DOIs
Publication statusPublished - 2014

Keywords

  • west-nile-virus
  • aedes-aegypti mosquitos
  • double-stranded-rna
  • arbovirus infection
  • antiviral immunity
  • albopictus cells
  • subgenomic rna
  • messenger-rna
  • nss protein
  • interference

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