Cervical cancer is the third leading cause of cancer death in women and is associated with persistent infection Human Papilloma Virus (HPV) by more than 99% of cases. Given the epidemiological importance of tumors induced by HPV and the paramount importance of developing active immunotherapies against these injuries during the past 12 years, we have developed a vaccine DNA-based therapeutic strategy encoding the E7 protein of HPV-16 fused to glycoprotein D ( gD) of Herpes Simplex Virus type 1 (HSV-1), called gDE7. Recently, solid evidence demonstrated that self-amplifying RNA can be an excellent platform for the development of human vaccines. This technology was able to induce a strong protective immune response in infectious disease control, consistent with DNA technology associated with electroporation, but without the inherent safety limitations. Although notable positive attributes of this highly innovative platform, its benefits as a therapeutic vaccine for cancer treatment have not been studied. This study aims to develop a self-amplifying RNA vaccine from gDE7 gene associated with liposomes targeted to tumor control induced by HPV-16. To improve the delivery of the vaccine to cells specialized in antigen presentation, we propose to use antibody targeting dendritic cells attached to the surface of the nanoparticles. In search of a model that is closest to what happens in the clinic will be evaluated the therapeutic potential of the new vaccine formulation to promote regression of tumors located at mucosal sites. The ability of the vaccine to elicit T lymphocyte response CD8 + E7-specific and systemic able to infiltrate the tumor site will be determined by various experimental approaches. The results obtained during the execution of this project will contribute to the development of a novel vaccine strategy in suitable conditions for their clinical use.
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