青蒿琥酯抗肝癌作用的实验研究

目的 :研究青蒿琥酯的抗肝癌作用。方法 :运用小鼠肝癌H₂₂ 癌模型、MTT法和集落形成法 ,观察青蒿琥酯对荷瘤鼠和人肝癌SMMC-772 1细胞株的作用。结果 :口服青蒿琥酯 30 0mg·kg^-1·d^-1,肿瘤受到明显抑制 ,抑瘤率在 3次实验中分别为 49.1% ,48.7% ,46.6% ;小鼠生存时间明显延长。青蒿琥酯与 5-氟尿嘧啶有协同抗肿瘤作用。青蒿琥酯体外对人肝癌细胞有明显细胞毒作用 ,其IC₅₀为 2.07μg·ml^-1,同时抑制人肝癌SMMC-7721克隆原细胞形成集落 ,其IC₅₀为2.48μg·ml^-1。结论 :口服青蒿琥酯有抗肝肿瘤作用。

Experimental Studies of Antitumor Effect of Artesunate on Liver Cancer

OBJECTIVE: To observe the inhibiting effect of Artesunate on liver cancer in vitro and in vivo. METHOD: The mice bearing H22 solid and ascitic liver tumor were applied in vivo experiments. Microculture tetrazolium assay and colony-forming unit assay were applied to test the cytotoxicity to human hepatocarcinoma SMMC-7721 cell line in vitro. RESULT: The growth of solid tumor were obviously inhibited by Artesunate at the dose of 300 mg.kg-1.d-1 ig for 7 days. The tumor inhibiting rates of Artesunate were 49.1%, 48.7%, 46.6% in 3 experiments respectively. After administration of Artesunate, the survival rate of the mice bearing H22 ascitic liver tumor were increased to 45%. Compared with the control groups, the difference was statistically significant (P < 0.01). In additional, Artesunate can synergize the antitumor activity of 5-fluorouracil. Artesunate showed evident cytotoxicity to human hepatocarcinoma SMMC-7721 cells, the IC50 of Artesunate being 2.07 micrograms.ml-1 in MTT experiment and 2.48 micrograms.ml-1 in colony-forming unit experiment. CONCLUSION: Artesunate has marked antitumor activity in vitro and in vivo.