The small-molecule compound BM-1197 inhibits the antiapoptotic regulators Bcl-2/Bcl-xL and triggers apoptotic cell death in human colorectal cancer cells

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Coptidis rhizoma has been used as traditional herb medicine in gastrointestinal disorders in the Eastern Asia. We investigated whether the anticancer effects of the C. rhizoma induced apoptosis on human colorectal cancer cells SNU-C4. The cytotoxic effect of C. rhizoma was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. To determine apoptotic cell death, 4,6-diamidino-2-phenylindole (DAPI) staining, terminal deoxynucleotidyl transferase (TdT)-mediated dUTP nick end labeling (TUNEL) assay, reverse transcription-polymerase chain reaction (RT-PCR) and caspase-3 enzyme assay were performed. In this study, C. rhizoma treatment (100 μg/ml) revealed typical morphological apoptotic features. Additionally, C. rhizoma treatment (100 μg/ml) increased levels of BAX and CASPASE-3, and decreased levels of BCL-2. Caspase-3 enzyme activity by treatment of C. rhizoma (100 μg/ml) also significantly increased compared to the control (p<0.05). These data indicate that C. rhizoma caused cell death by apoptosis through caspase pathways on human colorectal cancer cells SNU-C4.


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Hsi-Hsien Hsu ◽  
Tsung-Jung Ho ◽  
...  

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