Analysis of expression patterns of mRNA target genes related to cell death and survival. Cells were cultured for 48 h and 72 h for quantitative RT-PCR analysis. 3MA: 3-methyladenine, Rapa: Rapamycin. Bars in the graph represent mean ± S.D from 3 independent experiments. *,**Different letters within the no-rapamycin vs rapamycin represent a significant difference (p < 0.05).