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Review
. 2018 Apr;1869(2):200-215.
doi: 10.1016/j.bbcan.2018.01.005. Epub 2018 Jan 31.

Reformation in chimeric antigen receptor based cancer immunotherapy: Redirecting natural killer cell

Chu Lin  1 , Jun Zhang  2
Affiliations
Review

Reformation in chimeric antigen receptor based cancer immunotherapy: Redirecting natural killer cell

Chu Lin et al. Biochim Biophys Acta Rev Cancer. 2018 Apr.

Abstract

Natural killer (NK) cells are an important subset of lymphocytes which play a critical role in host immunity against cancers. With MHC-independent recognition, short lifespan and potent cytotoxicity, NK cells make a promising candidate for chimeric antigen receptor (CAR)-engineered cancer immunotherapy. Due to innate biological properties of NK cells, CAR-NK may outperform CAR-T therapy in terms of less side effects and more universal access, which may become a great reformation in CAR-based cancer immunotherapy. The CARs used in peripheral blood (PB) NK cells as well as NK cell line like NK-92 are the most important outfits defining antigenic specificity. The constructs of CARs used in NK cells from different sources vary, which all undergo generational optimization. The anti-tumor effects of CAR-NK have been validated in numerous preclinical trials for cancers, including hematologic malignancies and many solid tumors, which provide evidence for potential clinical application of CAR-NK. Additionally, this review concludes the challenges faced in the application of CAR-NK. Although CAR-NK is considered as one of the most possible "off-the-shelf" products, the improvement for the efficiency of expansion and transduction as well as the solution for underlying safety issues is still needed. Possible coping strategies for challenges and upgrades in techniques are also highlighted for future development in CAR-NK cancer immunotherapy.

Keywords: Cancer; Chimeric antigen receptor; Immunotherapy; Natural killer cell.

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