A novel bis-indole destabilizes microtubules and displays potent in vitro and in vivo antitumor activity in prostate cancer
作者:Sunjoo Ahn、Dong Jin Hwang、Christina M. Barrett、Jun Yang、Charles B. Duke、Duane D. Miller、James T. Dalton
DOI:10.1007/s00280-010-1319-8
日期:2011.2
inhibited polymerization of purified tubulin and induced a strong and concentration-dependent G(2)M arrest in PC-3 cells. In vivo studies in immunodeficient mice bearing PC-3 tumor xenografts showed that the compound effectively inhibited tumor growth. CONCLUSIONS The potent in vitro and in vivo antitumor activities of this novel indole suggest that drugs with this novel chemical scaffold might be developed
目的微管是化学疗法中最有用的亚细胞靶标之一。我们确定了一种新型的吲哚,(3-(1H-吲哚-2-基)苯基)(1H-吲哚-2-基)甲酮(15),它抑制微管蛋白的作用并在各种临床前模型中表现出有效的抗肿瘤活性。方法采用SRB或MTT法检测人癌细胞系中的体外癌细胞生长抑制作用。在LNCaP和PC-3细胞中检测了15诱导的凋亡。通过体外模型研究了15对细胞周期分布和微管蛋白的影响。在小鼠中进行了体内毒性和异种移植功效研究。结果吲哚15抑制了许多人类癌细胞系的体外生长,其中包括过度表达P-糖蛋白,多药耐药相关蛋白,和乳腺癌耐药蛋白,IC(50)值在34-162 nM之间。如抗组蛋白ELISA和DNA标记法所证实,该化合物的纳摩尔浓度导致bcl-2的下调,诱导的PARP裂解以及LNCaP和PC-3前列腺癌细胞的凋亡。体外研究表明,该化合物抑制纯化的微管蛋白的聚合,并诱导PC-3细胞中的强和浓度依赖性G(