Abstract

Peptide-based vaccines aimed at the induction of effective T-cell responses against established tumors have not been successful in clinic and require the use of new adjuvants. One of those is a new adjuvant in which gangliosides are incorporated into the outer membrane protein complex of Neisseria meningitidis to form very small size proteoliposomes (VSSP). In a preclinical model of human papillomavirus HPV16-induced cervical cancer we show that vaccination with HPV 16 E7 derived minimal CTL peptide and VSSP protects mice against tumor challenge, induces regression of established tumors and produces E7-specific CD8 + T-cell responses.

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