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Induction of high frequencies of specific T cells by vaccination requires prime-boost regimens. To reach optimal immune responses, it is necessary to use different vectors for priming and boosting as e.g. DNA vaccination followed by boosting with a recombinant viral vector. Here, we show that vaccines based on virus-like particles (VLP) displaying peptide epitopes are equally effective to induce CTL responses if used in a homologous or heterologous prime-boost setting. Strikingly, high frequencies (>20% of CD8(+) cells) of protective CTL could be induced and maintained by weekly injection of VLP. Thus, the use of VLP may avoid the requirement for complicated heterologous prime-boost regimens, facilitating the development of effective T cell-based vaccines.

Original publication

DOI

10.1002/eji.200425755

Type

Journal article

Journal

Eur J Immunol

Publication Date

03/2005

Volume

35

Pages

816 - 821

Keywords

Animals, CpG Islands, Epitopes, T-Lymphocyte, Female, Hepatitis B Core Antigens, Mice, T-Lymphocytes, Vaccination, Vaccines, DNA, Vaccinia, Vaccinia virus, Viral Vaccines, Virion