Comparative RNAi screening reveals host factors involved in enterovirus infection of polarized endothelial monolayers

Carolyn B. Coyne, Rebecca Bozym, Stefanie A. Morosky, Sheri L. Hanna, Amitava Mukherjee, Matthew Tudor, Kwang Sik Kim, Sara Cherry

Research output: Contribution to journalArticle


Enteroviruses, including coxsackievirus B (CVB) and poliovirus (PV), can access the CNS through the blood brain barrier (BBB) endothelium to cause aseptic meningitis. To identify cellular components required for CVB and PV infection of human brain microvascular endothelial cells, an in vitro BBB model, we performed comparative RNAi screens and identified 117 genes that influenced infection. Whereas a large proportion of genes whose depletion enhanced infection (17 of 22) were broadly antienteroviral, only 46 of the 95 genes whose depletion inhibited infection were required by both CVB and PV and included components of cell signaling pathways such as adenylate cyclases. Downregulation of genes including Rab GTPases, Src tyrosine kinases, and tyrosine phosphatases displayed specificity in their requirement for either CVB or PV infection. These findings highlight the pathways hijacked by enteroviruses for entry and replication in the BBB endothelium, a specialized and clinically relevant cell type for these viruses.

Original languageEnglish (US)
Pages (from-to)70-82
Number of pages13
JournalCell Host and Microbe
Issue number1
StatePublished - Jan 20 2011


ASJC Scopus subject areas

  • Immunology and Microbiology(all)
  • Cancer Research
  • Molecular Biology

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