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

ABSTRACT: 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

SUBMITTER: Chambers BS 

PROVIDER: S-EPMC6814535 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature