B16F10 were bought from National Centre for Cell Sciences (NCCS),
Pune, India. The drug-resistant EMT6/AR1 cell line was bought from
Sigma, St. Louis, MO, USA. HeLa and MCF-7 were maintained using Eagle’s
minimal essential medium. L929 and B16F10 cells were grown in Dulbecco’s
modified Eagle’s medium (DMEM), whereas A549 cells were cultured
in F-12K nutrient medium, supplemented with 10% (v/v) fetal bovine
serum and 1% (v/v) antibiotic–antimycotic solution as described
earlier.81 (link) The EMT6/AR1 cell line was maintained
as described previously.44 (link) MCF 10A was
grown in DMEM and F12K in a 1:1 ratio supplemented with 10% (v/v)
fetal bovine serum, 1% (v/v) antibiotic–antimycotic solution,
epidermal growth factor (20 ng/mL), hydrocortisone (0.5 μg/mL),
and insulin (10 μg/mL).82 (link) All the
cells were grown in optimized conditions in a humidified incubator
in 5% CO2 at 37 °C (Sanyo, Tokyo, Japan).