The human leukemia (HEL 92.1.7, K562) and epithelial-like HEK293T (CRL-3216) cell lines were obtained from ATCC (US) and tested negative for mycoplasma. These cell lines were cultured and maintained in Dulbecco’s Modified Eagle Medium supplemented with HyClone 5% fetal bovine serum (GE Healthcare, US).
For drug treatment, cells were treated with Camptothecin (MedChemExpress, CN), T5224 (APExBIO, CN) and R406 (Beyotime Biotechnology, CN) for indicated times and used for cell proliferation analysis. Generation of K562-fli1 cells was previously described [21 (link)]. For FLI1 induction, cells were treated with 5μM of doxycycline (Solarbio, CN).
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