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  • Title: Recombinant vaccines for the prevention of human papillomavirus infection and cervical cancer.
    Author: Palmer KE, Jenson AB, Kouokam JC, Lasnik AB, Ghim SJ.
    Journal: Exp Mol Pathol; 2009 Jun; 86(3):224-33. PubMed ID: 19454268.
    Abstract:
    Carcinogenic human papillomaviruses (HPVs) that cause cervical cancer preferentially infect basal, metaplastic squamous cells of the transformation zone. If infection persists, and a vegetative infection ensues, a premalignant lesion may develop with the potential to progress into an invasive squamous cell carcinoma. Papillomavirus prophylactic vaccines target the systemic immune system for induction of neutralizing antibodies that protect the basal cells against infection. Because the carcinogenic HPVs are susceptible to neutralization by antibodies for 9-48 h after reaching the basal cells, both low and high titered HPV type-specific antibodies induced by HPV L1 and L2-based vaccines are highly efficacious. The greatest burden of HPV-associated cancers occurs in poor areas of the world where women do not have access to routine gynecological care. The burden of HIV/AIDS in these same regions of the world has added to the burden of HPV-associated disease. There is an urgent need for a cost-effective, broad-spectrum HPV prophylactic vaccine in developing countries, which necessitates substantial cost subsidization of the virus-like particle (VLP) based vaccines licensed in industrialized countries or an alternative approach with second-generation vaccines that are specifically designed for delivery to women in resource-poor communities.
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