摘要
新合成的鬼臼毒素氮氧自由基衍生物4-[4”-(2”,2”,6”,6”-四甲基哌啶氮氧自由基)氨基]-4’-去甲表鬼臼毒(GP-7)显著抑制小鼠移植性肿瘤S180、实体型HePS和Lewis肺癌生长;7.5～20mg/kg,给药10d,抑瘤率分别为36.0％～58.4%、29.6%～60.0%和27.2%～46.5%;抑制作用和鬼臼乙叉甙(VP-16)相似。GP-7小鼠一次ip,LD_(50)为231.2mg/kg,是VP-16的3.3倍;连续给药10d,对小鼠脾和胸腺指数的影响较VP-16小,对小鼠WBC的影响和VP-16相同。GP-7和VP-165mg/L处理L1210细胞24h,抑瘤率分别为75.5%和73.6%;处理SGC-7901细胞72h,抑瘤率分别为81.4%和84.2%。
The antiumor activity of a new podophyllotoxin spin-labeled derivative, 4 -C 4 '-( 2 ', 2', C', 6'-tetramethyl- 1 '-piperidinyoxy ) amino]-4'-demethylepipodophyllotoxin ( GP-7 ) was studied. It was found that the growth of transplanted mouse tumors S180, HePS and Lewis lung cancer was markedly inhibited by GP-7. At a dose of 7.5-20 mg/kg, the inhibition rates of it against Sl80, HePS and Lewis lung cancer were 36.0-58.4, 29.6-60.0, and 27.2-46.5 % respectively. The toxicity of GP-7 was low, as indicated by the LD50 value of 231.2 mg/kg which was 3.3 times higher than that of etoposide ( VP-16 ) . On the other hand, the effects of GP-7 on spleen index and thymus index of mice bearing S180 tumor were remarkably lower than that of VP-16. In vitro GP-7 exhibited marked inhibition effects against L1210 and SGC-7901 cells. After exposure of L1210 cells to GP-7 and VP-16 5 mg/L for 24 h, the. inhibition rates were 75.5 and 73.6 %. after exposure of SGC-7901 cells to GP-7 and VP-16 5 mg/L for 72 h, the inhibition rates were 81.4 and 84.2 %. The new podophyllotoxin derivative GP-7 was similar to its structure analogues, clinical drug VP-16, in antitumor activity, while the toxicity of it was much lower than that of VP-16.
出处
《中国药理学通报》
CAS
CSCD
北大核心
1991年第4期304-307,共4页
Chinese Pharmacological Bulletin
关键词
GP-7
抗肿瘤药物
鬼臼乙叉甙
Podophyllotoxin
Free radicals
Antineoplastic agents
Cell line
4 - ( 4'-( 2 ', 2', 6', 6'-tetra-methyl-l'-piperidinyoxy)amino)-4'-demethylepipodo-phyllotoxin
Etopside
