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- W4313366003 abstract "Abstract γδ T cells have been demonstrated to have the MHC independent-broad anti-tumor activities with high IFN-γ production in the infiltration of the tumor tissue, therefore, they become the strongest interest for cancer immunotherapy. Ion channels play critical roles in the cell functions, especially in the regulation of immune cells functions. Cystic fibrosis transmembrane conductance regulator (CFTR) is an important chloride channel and regulator in the apical membrane of epithelial cells. Recently, CFTR was reported to participate in the immune regulation and likely account for the risk of developing cancer. However, little is known about the effect of CFTR on γδ T cells tumor immunity. In this study, we would like to elucidate the regulatory mechanisms and indispensable functions of CFTR on γδ T cells in tumor immunity. We found that genetic deletion of CFTR displayed the increased TCR signaling and elevates IFN-γ release in peripheral γδ T cells, but not in CD4+ T cells. The absence of CFTR in γδ T cells strengthened the TCR signaling. The underlying mechanism of higher TCR signaling was likely that CFTR may participate in TCR signaling via interacting with the PLCγ-1-LCK-ZAP70 signaling complex in γδ T cells. Consistent with the data in mice, CFTR inhibition, which increased intracellular Ca2+ concentration, significantly increased the IFN-γ production in γδ T cells. Finally, CFTR−/−γδ T cells displayed higher cytolytic ability against the B16 melanoma and protected against B16 tumor growth. This study systematically defined the roles of CFTR in the activation of γδ T cells and its potential contribution to tumor immunity, which will enrich the γδ T cells biology and expand the sight for the application of CFTR in γδ T cells cancer immunotherapy." @default.
- W4313366003 created "2023-01-06" @default.
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- W4313366003 date "2019-05-01" @default.
- W4313366003 modified "2023-09-26" @default.
- W4313366003 title "CFTR, which not only serves as a TCR signaling molecule but also function as an anion channel, dual-negatively regulates IFN-γ production and tumor immunity in γδ T cells" @default.
- W4313366003 doi "https://doi.org/10.4049/jimmunol.202.supp.60.10" @default.
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