C4-2, CWR22Rv1(22Rv1), VCaP and the 293T cell lines were obtained from American Type Culture Collection. C4-2, 22Rv1 and VCaP cells were maintained in RPMI 1640 medium and 293T cells in DMEM media, all containing 10% fetal bovine serum (FBS), antibiotics (100 units/ml penicillin and 100 µg/ml streptomycin), and 2 mM glutamine (Invitrogen) in a humidified 5% CO2 environment at 37 °C. All cell lines were characterized and authenticated as bacteria and mycoplasma free following ATCC’s instructions.
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