(A) RT-PCR analysis of genes involved in apoptosis. Data are shown as an average of triplicates.
(B) Western blot analysis of indicated protein levels in Gln-starved Kelly cells.
(C) Viability of Kelly cells transfected with indicated siRNAs in the presence or absence of Gln was analyzed by AnnexinV-PI staining. Data are shown as an average of triplicates.
(D) Examination of Gln starvation-induced cell death in five MYCN-amplified, and four MYCN non-amplified neuroblastoma cell lines. Cell death was measured by Annexin V-PI staining.
(E) Viability of IMR32 or NLF cells transfected with siRNAs targeting PUMA, NOXA, and TRB3 in the presence or absence of Gln was analyzed by AnnexinV-PI staining. Data are shown as an average of triplicates.
(F) Western blots confirming the effect of siRNA knockdown.
All error bars represent standard deviation. *p< 0.01. **p< 0.005. See also Figure S2.