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Abstract
The association of certain high-risk human papillomaviruses with the development of anogenital cancer in humans is well-established. Numerous preclinical studies have underwritten the development of both prophylactic and therapeutic vaccine candidates for clinical evaluation. Prophylactic strategies are utilising virus-like particles composed of the L1 viral capsid protein to induce neutralising antibodies while therapeutic approaches are aimed at generating specific T cells targeted at the viral E6 and/or E7 oncogene products. Thus far, human papillomavirus virus-like particle vaccines have proven to be clinically efficacious in the early trials looking at the prevention of infection. Important future milestones will be showing the prevention of high-grade cervical intraepithelial neoplasia and sufficient longevity for such protection. Different types of therapeutic vaccines including peptide, protein, DNA or viral vector-based vaccines have proven to be safe and immunogenic in patients, although there is often no correlation with clinical outcome. The possibility of combined prophylactic and therapeutic vaccines may offer the best chance for a significant reduction in the incidence of death from cervical cancer worldwide.