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Review
. 2005 Jun;7(6):686-95.
doi: 10.1002/jgm.713.

Genetic approaches for the induction of a CD4+ T cell response in cancer immunotherapy

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Review

Genetic approaches for the induction of a CD4+ T cell response in cancer immunotherapy

Aude Bonehill et al. J Gene Med. 2005 Jun.

Abstract

Recently, it has become more and more obvious that not only CD8+ cytotoxic T lymphocytes, but also CD4+ T helper cells are required for the induction of an optimal, long-lasting anti-tumor immune response. CD4+ T helper cells, and in particular IFN-gamma-secreting type 1 T helper cells, have been shown to fulfill a critical function in the mounting of a cancer-specific response. Consequently, targeting antigens into MHC class II molecules would greatly enhance the efficacy of an anti-cancer vaccine. The dissection of the MHC class II presentation pathway has paved the way for rational approaches to achieve this goal: novel systems have been developed to genetically manipulate the MHC class II presentation pathway. First, different genetic approaches have been used for the delivery of known epitopes into the MHC class II processing pathway or directly onto the peptide-binding groove of the MHC molecules. Second, several strategies exist for the targeting of whole tumor antigens, containing both MHC class I and class II restricted epitopes, to the MHC class II processing pathway. We review these data and describe how this knowledge is currently applied in vaccine development.

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