Role of NK Cells in Cancer and Immunotherapy
Onco(2021)
Abstract
Increasing knowledge of cancer immunology has led to the design of therapies using immune cells directly or manipulating their activity, collectively termed immunotherapy. In the field of immuno-oncology, research on adaptive immune T cells has led to the development of CAR-T cells. Innate immune cells such as NK cells can also eliminate oncogenically transformed cells and regulate cells of the immune system. Considering NK cells as a live drug, numerous methods for the isolation and activation of NK cells have been shown to be clinically and therapeutically relevant. In such processes, various cytokines and antibodies present a source of stimulation of NK cells and enhance the efficacy of such treatments. The ex vivo expansion and activation of NK cells, along with genetic modification with CAR, enhance their antitumor activity. Recent preclinical studies have shown an antitumor effect through extracellular vesicles (EVs) derived from NK cells. Work with autologous NK cells has provided insights for clinical applications. In this review, we outline the recent advances of NK-cell-based immunotherapies, summarizing CAR-NK cells, BiKEs, and TriKEs as treatment options against cancer. This review also discusses the challenges of NK cell immunotherapy.
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Key words
nk cells,cancer
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