中药虎杖中抗癌活性物质研究

Studies on Active Substance of Anticancer Effect in Polygonum cuspidatum

目的:为虎杖药用价值的开发利用提供科学据依。方法:在生物活性测定指导下,从虎杖中分离得到一种较高抗癌活性的物质,并且用液质联用、红外光谱、紫外全扫描等方法鉴定其结构。MTT法测定它对L-02、HepG2、SHZ-888、MCF-7、MCF-7/ADM等细胞的抑制作用并用HE染色法观察其作用MCF-7/ADM细胞48 h、72 h后的肿瘤细胞形态学变化。结果:分离得到的物质为顺、反式-白藜芦醇,它能特异性抑制多种肿瘤细胞的生长,而对正常肝细胞毒性很小。同时,首次发现其对耐阿霉素的MCF-7乳腺癌细胞有直接的细胞毒性。结论:白藜芦醇是虎杖中一种活性强、低毒的抗癌物质。

Objective ： To supply the scientific basis of research and development of the medicinal value of Polygonum cuspidatum. Methods： One composition was isolated from the roots of Polygonum cuspidatum by cytotoxicity based fractionation and identified by HPLC-MS, UV scanning and IR. The inhibition and morphology of L-02, Hep G2,SHZ-888, MCF-7, MCF-7/ADM cells growth caused by this composition was determined by MTT assay and HE dyeing. Results： This composition was identified as trans-and cis-resveratrol. It could specifically inhibit proliferation of many cancer cells but not human normal liver cell. We investigated the cytotoxicity of resveratrol to adriamycin-resistant MCF-7 cell in virtro. Conclusion： Resveratrol is a new anticancer composition which is less toxicity and higher efficiency in Polygonum cuspidatum.