Human Papillomavirus-Induced Chromosomal Instability and Aneuploidy in Squamous Cell Cancers

Viruses. 2024 Mar 25;16(4):501. doi: 10.3390/v16040501.

Abstract

Chromosomal instability (CIN) and aneuploidy are hallmarks of cancer. CIN is defined as a continuous rate of chromosome missegregation events over the course of multiple cell divisions. CIN causes aneuploidy, a state of abnormal chromosome content differing from a multiple of the haploid. Human papillomavirus (HPV) is a well-known cause of squamous cancers of the oropharynx, cervix, and anus. The HPV E6 and E7 oncogenes have well-known roles in carcinogenesis, but additional genomic events, such as CIN and aneuploidy, are often required for tumor formation. HPV+ squamous cancers have an increased frequency of specific types of CIN, including polar chromosomes. CIN leads to chromosome gains and losses (aneuploidies) specific to HPV+ cancers, which are distinct from HPV- cancers. HPV-specific CIN and aneuploidy may have implications for prognosis and therapeutic response and may provide insight into novel therapeutic vulnerabilities. Here, we review HPV-specific types of CIN and patterns of aneuploidy in squamous cancers, as well as how this impacts patient prognosis and treatment.

Keywords: aneuploidy; chromosomal instability; chromosome; human papillomavirus; squamous cell carcinoma.

Publication types

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

MeSH terms

  • Alphapapillomavirus / genetics
  • Alphapapillomavirus / pathogenicity
  • Aneuploidy*
  • Carcinoma, Squamous Cell / genetics
  • Carcinoma, Squamous Cell / virology
  • Chromosomal Instability*
  • Female
  • Human Papillomavirus Viruses
  • Humans
  • Neoplasms, Squamous Cell / genetics
  • Neoplasms, Squamous Cell / pathology
  • Neoplasms, Squamous Cell / virology
  • Papillomaviridae / genetics
  • Papillomaviridae / pathogenicity
  • Papillomavirus Infections* / complications
  • Papillomavirus Infections* / genetics
  • Papillomavirus Infections* / virology

Grants and funding

S.M. receives funding from the NSF (DGE-2036197). A.M.T. receives funding from NCI (R01 CA273723-01, R21 CA280577-01), NIGMS (R35 GM147287-02), and the American Cancer Society (RSG-23-1029282-01-DMC). P.F.C. receives funding from the NCI (K08CA256166), and this project was supported by the Specialized Program of Research Excellence (SPORE) program through the NIH National Institute for Dental and Craniofacial Research (NIDCR) and National Cancer Institute (NCI), grant P50DE026787. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH.