Shi XY, Zhao FZ, You JF, Dai X, Wang JL, Cui XL, Shao HQ. Cytotoxic effects of the main active components from three Chinese herbal medicines on
N-methyl-
N-nitro-
N-nitrosoguanidine transformed GES-1 cells.
Shijie Huaren Xiaohua Zazhi 2005;
13:477-482. [DOI:
10.11569/wcjd.v13.i4.477]
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Abstract
AIM: To investigate the cytotoxic effects of Panax Notogengsing Saponin (PNS), Astragalin Saponin (AS) and Baicalin (Ba), the main active components from 3 Chinese herbal medicines, on an immortalized human gastric epithelial cell line GES-1 and the N-methyl-N-nitro-N- nitrosoguanidine (MNNG) transformed GES-1 cells (MC cells).
METHODS: GES-1 cells were transformed by 2×10-5 mol/L MNNG. The transformed cells were named as MC cells. MC cells were treated with the 3 medicines alone or in different combinations. Cell viability was detected by MTT assay and soft agar colony formation assay, while apoptosis/necrosis were determined by electron microscopy, fluoroscopy and flow cytometry with annexin V staining.
RESULTS: PNS, AS and Ba inhibited the growth of GES-1 and MC cells in a dose and time-dependent manner. The colony formation efficiency in soft agar of MC cells was also decreased after treated with PNS, AS, Ba alone or in combination (P<0.05 or P<0.01vs control group). The 3 medicines induced apoptosis and/or necrosis of MC cells time-dependently. These effects were greatly enhanced when two or three of these medicines were used together (P<0.05 or P<0.01 vs 3 medicines used alone). The most potent combination was PNS+AS+Ba, followed by PNS+AS, AS+Ba and PNS+Ba, in a decreasing order.
CONCLUSION: PNS, AS and Ba can inhibit cell growth and induce cell death on MC cells. The cell death is partially caused by cell apoptosis. These effects can be enhanced to different extent by different combinations of these drugs.
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