Viral-mediated activation and inhibition of programmed cell death

PLoS Pathog. 2022 Aug 11;18(8):e1010718. doi: 10.1371/journal.ppat.1010718. eCollection 2022 Aug.

Abstract

Viruses are ubiquitous intracellular genetic parasites that heavily rely on the infected cell to complete their replication life cycle. This dependency on the host machinery forces viruses to modulate a variety of cellular processes including cell survival and cell death. Viruses are known to activate and block almost all types of programmed cell death (PCD) known so far. Modulating PCD in infected hosts has a variety of direct and indirect effects on viral pathogenesis and antiviral immunity. The mechanisms leading to apoptosis following virus infection is widely studied, but several modalities of PCD, including necroptosis, pyroptosis, ferroptosis, and paraptosis, are relatively understudied. In this review, we cover the mechanisms by which viruses activate and inhibit PCDs and suggest perspectives on how these affect viral pathogenesis and immunity.

Publication types

  • Review
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Apoptosis
  • Cell Death
  • Humans
  • Pyroptosis
  • Virus Diseases*
  • Viruses* / metabolism

Grants and funding

We thank University of Guelph for Start-up fund. Research in our laboratory is funded by Ontario Cancer Research Institute Joseph and Wolf Lebovic Fellowship Program, Livestock Research Innovation Corporation New Investigator Award, and Pet Trust research awarded to STW. SGV, MJW and JMI are supported by Ontario Graduate Scholarship and Ontario Veterinary College Scholarship. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.