Stem-like RN1, JK2, RKI1 and HW1 cells were derived from glioblastoma specimens [39 (link),40 (link)]. Cells were cultured in KnockOut DMEM/F-12 basal medium supplemented with StemPro NSC SFM supplement, 2 mM GlutaMAX-ICTS, 20 ng/mL EGF, 10 ng/mL FGF-β and Antibiotic–Antimycotic solution (all Life Technologies) as adherent cells on flasks coated with MatriGel Matrix (Corning Life Sciences, Cat# 354234, Corning, NY, USA). The protocols were approved by the Human Ethics Committee of the Royal Brisbane and Women’s Hospital (RBWH 2004/161). All cell cultures were routinely tested for mycoplasma contamination and the cumulative length of culturing did not exceed 15 passages.
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