中药活性成分体外逆转肿瘤细胞多药耐药性的研究

目的：从中药活性成分中筛选肿瘤耐药逆转剂，并对其逆转作用进行研究。方法：采用MTT法测定药物的体外杀伤作用，应用金氏公式进行联合用药分析。结果：钩藤总碱5μg/ml、药根碱2μg/ml、肯定玉红1．25μg/ml对长春新碱在KBv200细胞的逆转倍数分别为16．8、5．1和4倍；姜黄素1．56－12．5μg/ml与长春新碱合用对KB和KBv200细胞均具增敏作用。结论：钩藤总碱、药根碱、靛玉红均可逆转kBv200细胞对长春新碱的耐药性，而姜黄素与长春新碱合用对KB和KBv200细胞均具增敏作用。

Study on Active Constituents of Traditional Chinese Medicine Reversing Muitidrug Resistance of Tumor Cells in vitro

OBJECTIVE: To screen drugs reversing multidrug resistance of tumor cells from active constituents of traditional Chinese medicine and to study the reversal action. METHODS: The kill effects of the drugs on tumor cell lines in vitro were determined with MTT method. The Jin's formula was used to analyse the effect of drug combination. RESULTS: 5 micrograms/ml rhynchophylline, 2 micrograms/ml jatrorrhizine and 1.25 micrograms/ml indirulin could reverse multidrug resistance for vincristine on KBv200 cell line by 16.8, 5.1 and 4 fold respectively. 1.56-12.5 micrograms/ml curcumine combining with vincristine could sensitize antitumor effect both on KB and KBv200 cell lines. CONCLUSION: All rhynchophylline, jatrorrhizine and indirulin could reverse multidrug resistance for vincristine on KBv200 cell line. Curcumine combinating vincristine could sensitize antitumor effect both on kB and kBv200 cell lines.