DNA mismatch repair is required for the host innate response and controls cellular fate after influenza virus infection.

Journal Article (Journal Article)

Despite the cytopathic nature of influenza A virus (IAV) replication, we recently reported that a subset of lung epithelial club cells is able to intrinsically clear the virus and survive infection. However, the mechanisms that drive cell survival during a normally lytic infection remained unclear. Using a loss-of-function screening approach, we discovered that the DNA mismatch repair (MMR) pathway is essential for club cell survival of IAV infection. Repair of virally induced oxidative damage by the DNA MMR pathway not only allowed cell survival of infection, but also facilitated host gene transcription, including the expression of antiviral and stress response genes. Enhanced viral suppression of the DNA MMR pathway prevented club cell survival and increased the severity of viral disease in vivo. Altogether, these results identify previously unappreciated roles for DNA MMR as a central modulator of cellular fate and a contributor to the innate antiviral response, which together control influenza viral disease severity.

Full Text

Duke Authors

Cited Authors

  • Chambers, BS; Heaton, BE; Rausch, K; Dumm, RE; Hamilton, JR; Cherry, S; Heaton, NS

Published Date

  • November 2019

Published In

Volume / Issue

  • 4 / 11

Start / End Page

  • 1964 - 1977

PubMed ID

  • 31358986

Pubmed Central ID

  • PMC6814535

Electronic International Standard Serial Number (EISSN)

  • 2058-5276

Digital Object Identifier (DOI)

  • 10.1038/s41564-019-0509-3


  • eng

Conference Location

  • England