HPV-mediated cervical carcinogenesis: concepts and clinical implications

Area of Science:

• Oncology
• Virology
• Genetics

Background:

• Persistent high-risk human papillomavirus (hrHPV) infection is a prerequisite for cervical cancer.
• Cervical cancer development from hrHPV infection is a rare, multi-step process occurring over 12-15 years.
• Most hrHPV infections are transient and do not lead to cervical lesions or cancer.

Purpose of the Study:

• To review and integrate data from in vitro transformation studies and clinical specimens.
• To develop a cervical cancer progression model based on hrHPV infection.
• To discuss implications for cervical screening and management of cervical intraepithelial neoplasia (CIN).

Main Methods:

• Literature review integrating in vitro hrHPV transformation studies.
• Analysis of clinical specimens to understand cervical cancer progression.
• Development of a multi-step cervical cancer progression model.

Main Results:

• Individual genetic susceptibility influences early-stage hrHPV infection outcomes.
• Altered transcriptional regulation of viral E6/E7 oncogenes drives genomic instability and cell transformation.
• Accumulation of epigenetic alterations in high-grade CIN lesions promotes malignancy.

Conclusions:

• Cervical cancer progression involves distinct stages influenced by host genetics and viral oncogene activity.
• The developed model provides insights into the multi-step nature of HPV-induced cervical carcinogenesis.
• The model's biomarkers may enhance cervical screening and CIN disease management.