Engineering of chimeric Natural Killer cell receptors to develop precision adoptive immunotherapies for cancer

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)
83 Downloads (Pure)

Abstract

Natural killer (NK) cells are innate immune effectors which play a crucial role in recognizing and eliminating virally infected and cancerous cells. They effectively distinguish between healthy and distressed self through the integration of signals delivered by germline-encoded activating and inhibitory cell surface receptors. The frequent up-regulation of stress markers on genetically unstable cancer cells has prompted the development of novel immunotherapies that exploit such innate receptors. One prominent example entails the development of chimeric antigen receptors (CAR) that detect cell surface ligands bound by NK receptors, coupling this engagement to the delivery of tailored immune activating signals. Here, we review strategies to engineer CARs in which specificity is conferred by natural killer group 2D (NKG2D) or other NK receptor types. Multiple preclinical studies have demonstrated the remarkable ability of chimeric NK receptor-targeted T cells and NK cells to effectively and specifically eliminate cancer cells and to reject established tumour burdens. Importantly, such systems act not only acutely but, in some cases, they also incite immunological memory. Moreover, CARs targeted with the NKG2D ligand binding domain have also been shown to disrupt the tumour microenvironment, through the targeting of suppressive T regulatory cells, myeloid-derived suppressor cells and tumour vasculature. Collectively, these findings have led to the initiation of early-phase clinical trials evaluating both autologous and allogeneic NKG2D-targeted CAR T cells in the haematological and solid tumour settings.

Original languageEnglish
Pages (from-to)11-27
Number of pages17
JournalClinical & Experimental Immunology
Volume202
Issue number1
DOIs
Publication statusPublished - 14 Sept 2020

Keywords

  • CAR
  • cancer
  • immunotherapy
  • natural killer receptors

Fingerprint

Dive into the research topics of 'Engineering of chimeric Natural Killer cell receptors to develop precision adoptive immunotherapies for cancer'. Together they form a unique fingerprint.

Cite this