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Journal Article
Key Molecular Events in Cervical Cancer Development
2019
Overview
Cervical cancer is the fourth most common cancer among women. Infection by high-risk human papillomavirus (HPV) is the main aetiology for the development of cervical cancer. Infection by high-risk human papillomavirus (HPV) and the integration of the HPV genome into the host chromosome of cervical epithelial cells are key early events in the neoplastic progression of cervical lesions. The viral oncoproteins, mainly E6 and E7, are responsible for the initial changes in epithelial cells. The viral proteins inactivate two main tumour suppressor proteins, p53, and retinoblastoma (pRb). Inactivation of these host proteins disrupts both the DNA repair mechanisms and apoptosis, leading to rapid cell proliferation. Multiple genes involved in DNA repair, cell proliferation, growth factor activity, angiogenesis, as well as mitogenesis genes become highly expressed in cervical intraepithelial neoplasia (CIN) and cancer. This genomic instability encourages HPV-infected cells to progress towards invasive carcinoma. The key molecular events involved in cervical carcinogenesis will be discussed in this review.
Publisher
MDPI AG,MDPI
Subject
/ Antigens
/ cervical intraepithelial neoplasia
/ Cervix
/ DNA, Viral - adverse effects
/ Epithelial Cells - pathology
/ Female
/ Genes
/ Genomes
/ Host Microbial Interactions - physiology
/ Human papillomavirus 16 - growth & development
/ Human papillomavirus 16 - pathogenicity
/ Human papillomavirus 18 - growth & development
/ Human papillomavirus 18 - pathogenicity
/ Humans
/ Lesions
/ Papillomavirus Infections - complications
/ Papillomavirus Infections - physiopathology
/ Proteins
/ Review
/ Uterine Cervical Neoplasms - etiology
/ Uterine Cervical Neoplasms - physiopathology
/ Uterine Cervical Neoplasms - virology
/ Viruses
