Cell viability was detected using Cell Counting Kit-8 (CCK-8, Dojindo, Japan) assays according to the manufacturer’s instructions. Briefly, the cells were seeded into a 96-well plate at a density of 5,000 cells/well. After treatment with different drugs at various concentrations for the indicated times, 10 µL of CCK-8 reagent was added to each well, and the cells were cultured for another 2 h. At the end of the incubation, the absorbance at 450 nm was analyzed with a microplate reader (BioTek, United States). All experiments were performed in triplicate.
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