Single-cell analysis of early antiviral gene expression reveals a determinant of stochastic IFNB1 expression

Sultan Doğanay, Maurice Youzong Lee, Alina Baum, Jessie Peh, Sun Young Hwang, Joo Yeon Yoo, Paul J. Hergenrother, Adolfo García-Sastre, Sua Myong, Taekjip Ha

Research output: Contribution to journalArticlepeer-review

Abstract

RIG-I-like receptors (RLRs) are cytoplasmic sensors of viral RNA that trigger the signaling cascade that leads to type I interferon (IFN) production. Transcriptional induction of RLRs by IFN is believed to play the role of positive feedback to further amplify viral sensing. We found that RLRs and several other IFN-stimulated genes (ISGs) are induced early in viral infection independent of IFN. Expression of these early ISGs requires IRF3/IRF7 and is highly correlated amongst them. Simultaneous detection of mRNA of IFNB1, viral replicase, and ISGs revealed distinct populations of IFNB1 expressing and non-expressing cells which are highly correlated with the levels of early ISGs but are uncorrelated with IFN-dependent ISGs and viral gene expression. Individual expression of RLRs made IFNB1 expression more robust and earlier, suggesting a causal relation between levels of RLR and induction of IFN.

Original languageEnglish (US)
JournalUnknown Journal
DOIs
StatePublished - Aug 31 2017
Externally publishedYes

Keywords

  • cellular heterogeneity
  • IFNB1 induction
  • RIG-I

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Agricultural and Biological Sciences(all)
  • Immunology and Microbiology(all)
  • Neuroscience(all)
  • Pharmacology, Toxicology and Pharmaceutics(all)

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