Developing new therapeutic strategies to overcome drug resistance of cancer cells is an ongoing endeavor. From among 2 million chemicals, we identified ethyl 4-oxo-2-phenyl-1,4-dihydroquinoline-6-carboxylate (AS1712) as a low-toxicity inhibitor of lung cancer cell proliferation and xenograft tumor growth. We show that AS1712 is active against broad cancer cell lines and is able to bind in the colchicine-binding
开发新的治疗策略以克服癌细胞的耐药性是正在进行的努力。在200万种
化学药品中,我们确定了4-氧代-2-苯基-1,4-二氢
喹啉-6-羧酸乙酯(AS1712)是肺癌细胞增殖和异种移植肿瘤生长的低毒性
抑制剂。我们显示,AS1712对广泛的癌
细胞系具有活性,并且能够在β-微管蛋白的
秋水仙碱结合口袋中结合,从而抑制微管装配,并因此诱导有丝分裂停滞和凋亡。我们基于细胞的结构-活性关系研究确定了一种新的先导化合物RJ-LC-15-8,它对H1975细胞的抗增殖能力比对AS1712的强,同时保持了相似的作用机理。尤其,AS1712和RJ-LC-15-8克服了P-糖蛋白外排泵和β-微管蛋白的改变,这些改变导致获得性抵抗癌细胞靶向微管的药物。AS1712和RJ-LC-15-8可能是克服了对癌细胞的微管靶向剂的后天抵抗力的先导化合物。