Abstract
Loranthus yadoriki, one of the Korean mistletoe species, has been already known for anti-viral effects, but the molecular basis that it caused apoptosis in cancer cells was not definitely revealed yet. The aim of this study was to estimate the mechanisms of apoptotic cell death of the extract from Loranthus yadoriki (named as ELY) in human cervix HeLa cells. We identified that ELY prevented the proliferation of HeLa cells between 50 and 300 μg/mL which did not affect non-cancerous HaCaT cells. In addition, ELY induced a morphological change and nucleus disruption as well as an accumulation of sub-G1 phase in HeLa cells. The mechanism study, by using western blot analysis, showed that the phosphorylation of Fas-associated death domain (FADD), Bim and Bak was up-regulated by ELY treatment. Furthermore, the expression of cytochrome c and Apaf-1 was increased by ELY treatment. In immunofluorescence staining, the increased intensity of cleaved caspase-3 and cleaved PARP was also observed under ELY treatment. Sequentially, the caspase cascade was activated by ELY from caspase-8 to caspase-3 and from caspase-9 to caspase-3, in both extrinsic and intrinsic pathways. The results of this study demonstrate that ELY has anti-cancer effects on human cervix cancer HeLa cells via caspase cascade in apoptotic signaling pathways.
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Kim, EJ., Kang, CW., Kim, NH. et al. Induction of Apoptotic Cell Death on Human Cervix Cancer HeLa cells by Extract from Loranthus yadoriki. Biotechnol Bioproc E 23, 201–207 (2018). https://doi.org/10.1007/s12257-018-0033-y
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DOI: https://doi.org/10.1007/s12257-018-0033-y