Title : β-Carotene-induced apoptosis is mediated with loss of Ku proteins in gastric cancer AGS cells.

Pub. Date : 2015 Jul

PMID : 25981694






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1 In the present study, we investigated the mechanism of beta-carotene-induced apoptosis of gastric cancer AGS cells by determining cell viability, DNA fragmentation, apoptotic indices (increases in cytochrome c and Bax, decrease in Bcl-2), ROS levels, mitochondrial membrane potential, caspase-3 activity, Ku70/80 levels, and Ku-DNA-binding activity of the cells treated with or without antioxidant N-acetyl cysteine and caspase-3 inhibitor z-DEVED-fmk. beta Carotene caspase 3 Homo sapiens
2 In the present study, we investigated the mechanism of beta-carotene-induced apoptosis of gastric cancer AGS cells by determining cell viability, DNA fragmentation, apoptotic indices (increases in cytochrome c and Bax, decrease in Bcl-2), ROS levels, mitochondrial membrane potential, caspase-3 activity, Ku70/80 levels, and Ku-DNA-binding activity of the cells treated with or without antioxidant N-acetyl cysteine and caspase-3 inhibitor z-DEVED-fmk. beta Carotene caspase 3 Homo sapiens
3 As a result, beta-carotene induced apoptosis (decrease in cell viability, increases in DNA fragmentation and apoptotic indices) and caspase-3 activation, but decreased Ku70/80 levels and Ku-DNA-binding activity. beta Carotene caspase 3 Homo sapiens
4 beta-Carotene-induced alterations (increase in caspase-3 activity, decrease in Ku proteins) and apoptosis were inhibited by N-acetyl cysteine and z-DEVED-fmk. beta Carotene caspase 3 Homo sapiens
5 Therefore, beta-carotene-induced increases in ROS and caspase-3 activity may lead to reduction of Ku70/80 levels, which results in apoptosis in gastric cancer cells. beta Carotene caspase 3 Homo sapiens