A heritable antiviral RNAi response limits Orsay virus infection in Caenorhabditis elegans N2

Mark G Sterken, L Basten Snoek, Kobus J Bosman, Jikke Daamen, Joost A G Riksen, Jaap Bakker, Gorben P Pijlman, Jan E Kammenga

Research output: Contribution to journalArticleAcademicpeer-review


Orsay virus (OrV) is the first virus known to be able to complete a full infection cycle in the model nematode species Caenorhabditis elegans. OrV is transmitted horizontally and its infection is limited by antiviral RNA interference (RNAi). However, we have no insight into the kinetics of OrV replication in C. elegans. We developed an assay that infects worms in liquid, allowing precise monitoring of the infection. The assay revealed a dual role for the RNAi response in limiting Orsay virus infection in C. elegans. Firstly, it limits the progression of the initial infection at the step of recognition of dsRNA. Secondly, it provides an inherited protection against infection in the offspring. This establishes the heritable RNAi response as anti-viral mechanism during OrV infections in C. elegans. Our results further illustrate that the inheritance of the anti-viral response is important in controlling the infection in the canonical wild type Bristol N2. The OrV replication kinetics were established throughout the worm life-cycle, setting a standard for further quantitative assays with the OrV-C. elegans infection model.

Original languageEnglish
Pages (from-to)e89760
JournalPLoS One
Issue number2
Publication statusPublished - 2014
Externally publishedYes


  • Analysis of Variance
  • Animals
  • Caenorhabditis elegans
  • DNA Primers
  • Disease Models, Animal
  • Inheritance Patterns
  • Nodaviridae
  • RNA Interference
  • RNA Virus Infections
  • RNA, Viral
  • Reverse Transcriptase Polymerase Chain Reaction
  • Virus Replication
  • Journal Article
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't


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