The emerging field of oncolytic virus-based cancer immunotherapy

Trends Cancer. 2023 Feb;9(2):122-139. doi: 10.1016/j.trecan.2022.10.003. Epub 2022 Nov 17.

Abstract

Oncolytic viruses (OVs) provide novel and promising therapeutic options for patients with cancers resistant to traditional therapies. Natural or genetically modified OVs are multifaceted tumor killers. They directly lyse tumor cells while sparing normal cells, and indirectly potentiate antitumor immunity by releasing antigens and activating inflammatory responses in the tumor microenvironment. However, some limitations, such as limited penetration of OVs into tumors, short persistence, and the host antiviral immune response, are impeding the broad translation of oncolytic virotherapy into the clinic. If these challenges can be overcome, combination therapies, such as OVs plus immune checkpoint blockade (ICB), chimeric antigen receptor (CAR) T cells, or CAR natural killer (NK) cells, may provide powerful therapeutic platforms in the clinic.

Keywords: CAR-NK; CAR-T; combination therapy; immunotherapy; oncolytic virotherapy; oncolytic virus.

Publication types

  • Review
  • Research Support, Non-U.S. Gov't
  • Research Support, N.I.H., Extramural

MeSH terms

  • Humans
  • Immunotherapy
  • Killer Cells, Natural
  • Neoplasms* / therapy
  • Oncolytic Virotherapy*
  • Oncolytic Viruses* / genetics
  • Tumor Microenvironment