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KMID : 0043320190420070543
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Archives of Pharmacal Research
2019 Volume.42 No. 7 p.543 ~ p.548
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Roles of NKT cells in cancer immunotherapy
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Bae Eun-Ah
Seo Hyung-Seok
Kim Il-Kyu
Jeon In-Su
Kang Chang-Yuil
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Abstract
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Cancer immunotherapy has emerged as an effective therapeutic strategy to treat cancer. Among diverse immune populations, invariant natural killer T (iNKT) cells have shown potent antitumor activity by linking innate and adaptive immune systems. Upon activation by lipid antigens on CD1d molecules, iNKT cells rapidly produce various cytokines and trigger antitumor immunity directly or indirectly by activating other antitumor immune cells. Administration of a representative iNKT cell ligand alpha-galactosylceramide (α-GalCer) or α-GalCer-pulsed APCs effectively stimulates iNKT cells and thereby induces antitumor effects. In this review, we will introduce the biology and importance of NKT cells in antitumor immunity. Previous studies have demonstrated that iNKT cells not only activate various immune cells but also reinvigorate exhausted immune cells in the tumor microenvironment. Furthermore, we will summarize the major clinical trials utilizing iNKT-based immunotherapies.
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KEYWORD
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Invariant natural killer T (iNKT) cell, Cancer immunotherapy, Alpha-galactosylceramide (α-GalCer), CD1d, Tumor immunology
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