The human NSCLC cell lines A549, NCI-H1299, NCI-H23, NCI-H3255, NCI-H1650, and HCC-827 were purchased from ATCC (Manassas, VA, USA) and cultured as recommended. HCC-827GR5 and PC9 were a kind gift from Dr. Pasi A. Jänne, Harvard University, Boston, MA [15 (link)]. Cells were grown as a monolayer in 75 cm2 flasks (Costar, Cambridge, MA, USA) at 37 °C in 5% CO2 and 95% air. The NSCLC cell lines used in this study had been previously characterized for EGFR and KRAS mutations, and were tested for their authentication by PCR profiling using short tandem repeats (STR), at BaseClear (Leiden, The Netherlands).
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