Figure 2.
Cytotoxicity of Aloe-emodin (A), emodin (B), rhein (C) and physcion (D) towards sensitive CCRF-CEM and multidrug-resistant P-glycoprotein-expressing CEM/ADR5000 acute lymphoblastic cells and of Aloe-emodin as the most cytotoxic compound towards HCT116 (p53+/+) colon cancer cells and its knockout clone HCT116 (p53-/-) (E), HEK293 human embryonic kidney cells and its resistant counterpart HEK293/ ABCB5 transfected with a cDNA of ABCB5 (F), MDA-MB-231-pcDNA3 breast cancer cells and its resistant subline MDA-MB-231-BCRP clone 23 (G), and U87. MG glioblastoma cells and its transfected subline U87.MGΔEGFR, respectively (H). Mean values ± SD of three independent experiments are shown.