Virus-like particles induce robust human T-helper cell responses

Autor: Braun, Marion, Jandus, Camilla, Maurer, Patrik, Hammann-Haenni, Anya, Schwarz, Katrin, Bachmann, Martin F, Speiser, Daniel E, Romero, Pedro
Přispěvatelé: University of Zurich, Romero, Pedro
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: European journal of immunology. 42(2)
ISSN: 1521-4141
0014-2980
Popis: Among synthetic vaccines, virus-like particles (VLPs) are used for their ability to induce strong humoral responses. Very little is reported on VLP-based-vaccine-induced CD4(+) T-cell responses, despite the requirement of helper T cells for antibody isotype switching. Further knowledge on helper T cells is also needed for optimization of CD8(+) T-cell vaccination. Here, we analysed human CD4(+) T-cell responses to vaccination with MelQbG10, which is a Qβ-VLP covalently linked to a long peptide derived from the melanoma self-antigen Melan-A. In all analysed patients, we found strong antibody responses of mainly IgG1 and IgG3 isotypes, and concomitant Th1-biased CD4(+) T-cell responses specific for Qβ. Although less strong, comparable B- and CD4(+) T-cell responses were also found specific for the Melan-A cargo peptide. Further optimization is required to shift the response more towards the cargo peptide. Nevertheless, the data demonstrate the high potential of VLPs for inducing humoral and cellular immune responses by mounting powerful CD4(+) T-cell help.
Databáze: OpenAIRE
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