期刊
BIOSCIENCE REPORTS
卷 30, 期 5, 页码 307-317出版社
PORTLAND PRESS LTD
DOI: 10.1042/BSR20090059
关键词
apoptosis; breast cancer cell; French bean; haemagglutinin; lectin; p53
A dimeric 64 kDa HA (haemagglutinin) was isolated with a high yield from dried Phaseolus vulgaris cultivar 'French bean number 35' seeds. It inhibited the proliferation of hepatoma HepG2 cells and breast cancer MCF-7 cells with an IC50 of 100 and 2 mu M respectively. After exposure of MCF-7 cells to the HA for 24 h, a number of changes were detected in the cells. Growth arrest in the G(0)/G(1) and G(2)/M phases was observed. The number of cells undergoing early apoptosis and late apoptosis increased. Disruption of the mitochondrial transmembrane potential and disorganization of the inner mitochondrial membrane were induced. Western-blot analysis disclosed that the HA induced apoptosis through the death receptor-mediated pathway.
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