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Vaccines-2013 - OMICS Group

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Regina Heidenreich et al., J <strong>Vaccines</strong> Vaccin <strong>2013</strong>, 4:5http://dx.doi.org/10.4172/2157-7560.S1.0173 rd International Conference on<strong>Vaccines</strong> & VaccinationJuly 29-31, <strong>2013</strong> Embassy Suites Las Vegas, NV, USARNAdjuvant ® : A novel, highly-potent, RNA-based adjuvant for prophylactic and therapeuticvaccinesRegina Heidenreich, Benjamin Petsch, Mariola Fotin-Mleczek, Patrick Baumhof, Birgit Scheel, Söhnke Voss, Edith Jasny, Thomas Krampsand Karl-Josef KallenCureVac GmbH, Tübingen, GermanyGiven the important role of adjuvants in prophylactic vaccines as well as tumor immunotherapy, identification anddevelopment of new adjuvants with enhanced efficacy and safety is necessary. CureVac has recently developed a novel RNAbasedadjuvant with strong immunostimulatory properties. RNAdjuvant® is physically and chemically well-defined and exhibits avery good safety profile. RNAdjuvant® is well tolerated even at high doses and does not induce splenomegaly in mice as describedfor standard adjuvants such as CpG-DNA. In vitro, RNAdjuvant® induced activation of APC leading to an increased expressionof specific activation markers and secretion of cytokines driving a pronounced Th1 response.In vivo, RNAdjuvant® boosted even very immunogenic influenza vaccines inducing balanced Th1/Th2 T cell responses.Vaccination with RNAdjuvant® accelerated onset of protective antibody responses to approved influenza vaccines, enhancedvaccine specific T cell responses and enabled significant dose sparing.In addition, RNAdjuvant® combined with human papillomavirus (HPV)-derived recombinant peptides elicited strongantigen-specific cytotoxic T-cell responses, which are barely induced by vaccination with peptide alone. Vaccination withRNAdjuvant® with HPV-derived peptides mediated complete tumor protection in a prophylactic setting, as well as significantgrowth inhibition of already established tumors after therapeutic vaccination.Taken together our data demonstrate that RNAdjuvant® represents a novel breakthrough technology that can be combinedwith almost any type of antigen that requires safe and potent adjuvants.bm@curevac.deJ <strong>Vaccines</strong> Vaccin <strong>2013</strong>ISSN: 2157-7560, JVV an open access journal<strong>Vaccines</strong>-<strong>2013</strong>July 29-31, <strong>2013</strong>Volume 4 Issue 5Page 97

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