Proteases and HPV-Induced Carcinogenesis

Area of Science:

• Oncology
• Virology
• Molecular Biology

Background:

• Persistent Human papillomavirus (HPV) infection is the primary cause of pre-malignant and malignant cervical lesions.
• High-risk HPV types (e.g., HPV 16, 18) are Group 1 carcinogens, expressing E6 and E7 oncoproteins that inhibit tumor suppressors p53 and pRB, leading to cellular immortalization.

Purpose of the Study:

• To review the critical mechanisms of HPV-dependent carcinogenesis.
• To examine the role of proteolytic cascades in HPV-mediated cancer progression and their clinical impact.

Main Methods:

• Literature review focusing on HPV carcinogenesis mechanisms.
• Analysis of the role of proteases and protease inhibitors in HPV-associated cancers.
• Discussion of genetic polymorphisms in matrix metalloproteinase 1 (MMP-1) and prognostic markers like hepatocyte growth factor activator inhibitor-1 (HAI-1) and -2 (HAI-2).

Main Results:

• High-risk HPVs utilize E6/E7 oncoproteins to disrupt cellular regulatory pathways (p53, pRB).
• Proteases and their inhibitors significantly influence cellular carcinogenesis and the tumor microenvironment.
• MMP-1 genetic polymorphisms correlate with carcinoma invasiveness, and HAI-1/HAI-2 serve as prognostic markers in HPV-dependent cervical carcinomas.

Conclusions:

• Understanding HPV carcinogenesis mechanisms, particularly proteolytic cascades, is vital for improving patient health, treatment strategies, and survival rates.
• Proteolytic enzymes and inhibitors represent key targets and biomarkers in HPV-associated malignancies.