Abstract
Lentiviral vectors have emerged as promising tools for cancer immunotherapy owing to their capacity to transduce a wide range of different cell types, including dendritic cells (DCs), the key regulators of immunity. Ex vivo transduced DCs proved to be potent inducers of strong antigen-specific T-cell responses, both in vitro and in vivo. Moreover, lentiviral vectors have been successfully applied for antigen-specific immunization, offering the advantage that the same lentivirus can be used for all patients resulting in an ‘off-the-shelf’ therapeutic. This review provides an update on the state-of-the-art induction of tumor-specific immune responses in vivo upon direct administration of tumor-associated antigen-encoding lentiviruses. Focusing on the cell types transduced, the results of current studies and the explanation for the potency of lentiviral vectors are discussed.
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