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Cancer Exosomes and Natural Killer Cells Dysfunction: Biological Roles, Clinical Significance and Implications for Immunotherapy Publisher Pubmed



Hosseini R1 ; Sarvnaz H2 ; Arabpour M3 ; Ramshe SM4 ; Asefkabiri L5 ; Yousefi H6 ; Akbari ME5 ; Eskandari N1
Authors

Source: Molecular Cancer Published:2022


Abstract

Tumor-derived exosomes (TDEs) play pivotal roles in several aspects of cancer biology. It is now evident that TDEs also favor tumor growth by negatively affecting anti-tumor immunity. As important sentinels of immune surveillance system, natural killer (NK) cells can recognize malignant cells very early and counteract the tumor development and metastasis without a need for additional activation. Based on this rationale, adoptive transfer of ex vivo expanded NK cells/NK cell lines, such as NK-92 cells, has attracted great attention and is widely studied as a promising immunotherapy for cancer treatment. However, by exploiting various strategies, including secretion of exosomes, cancer cells are able to subvert NK cell responses. This paper reviews the roles of TDEs in cancer-induced NK cells impairments with mechanistic insights. The clinical significance and potential approaches to nullify the effects of TDEs on NK cells in cancer immunotherapy are also discussed. © 2022, The Author(s).
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