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Gammadelta T cell modulation in anticancer treatment

Nadia Caccamo1, Francesco Dieli, Serena Meraviglia

  • 1Dipartimento di Biopatologia e Metodologie Biomediche, Università di Palermo, Palermo, Italy. caccamo@unipa.it

Current Cancer Drug Targets
|January 22, 2010
PubMed

The broad antimicrobial and antitumoral reactivity of Vgamma9Vdelta2 T cells, their ability to produce inflammatory cytokines involved in protective immunity against intracellular pathogens and tumors and their strong cytolytic and bactericidal activities suggest their direct involvement in immune control of cancers and infections. gammadelta T cells can be selectively activated by naturally occurring or synthetic phosphoantigens, and drugs that enhance their accumulation into stressed cells, offering new avenues for the development of gammadelta T cell-based immunotherapies. The recent development of small drugs selectively activating Vgamma9Vdelta2 T lymphocytes, which upregulate endogenous phosphoantigens, has enabled investigators to design experimental approaches of cancer immunotherapies; several ongoing phase I and II clinical trials are focused on the role of direct bioactivity of drugs and of adoptive cell therapies involving phosphoantigen-activated Vgamma9Vdelta2 T lymphocytes in humans. In this review, we focus on the recent advances of the activation/expansion of gammadelta T cells in vitro and in vivo that may represent a promising target for the design of novel and highly innovative immunotherapy in patients with different types of cancer.

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