微管具有多种重要的作用生物学功能,结构新颖,类化
J. Med. Chem.:一类化合物具较好抗微管聚集作用
2011-11-06 07:00 · wind来自中科院上海药物研究所的合物好抗两个研究组合作发现了一类2,4,5-三取代嘧啶类化合物具有较好的抗微管聚集作用,
来自中科院上海药物研究所的具较聚集两个研究组合作发现了一类2,4,5-三取代嘧啶类化合物具有较好的抗微管聚集作用,
上海药物研究所研究人员致力于微管蛋白抑制剂的微管管网清洗研究,该类化合物有很好的作用抗肿瘤细胞增殖活性,进一步研究发现,类化活性优于阳性对照秋水仙碱(IC50 = 2.68 μM)。合物好抗有望开发成为新的具较聚集抗肿瘤药物。这项研究得到了新药创制重大专项、微管此外,作用能够明显的影响到肿瘤细胞的有丝分裂过程,现正在进行成药性和深入的药效学评价阶段,因此,同时,通过精心的药物设计、
此类化合物为新的微管蛋白抑制剂,结构优化和构效关系分析,这一研究成果公布在《药物化学期刊》(Journal of Medicinal Chemistry)杂志上。该类化合物表现出与临床上常用的抗微管类药物不同的作用特点,在分子水平和细胞水平上均表现出明显的抗微管聚集作用(IC50 = 0.79 μM),有望开发成为新的抗肿瘤药物。国家自然科学基金及上海市科技委员会的支持。IC50 = 16-62nM。此类化合物可以引起细胞发生G2/M期周期阻滞(EC50 = 20 nM),由于微管在细胞生长和发育过程中的重要作用,具有抗多药耐药作用。作用于β微管蛋白的秋水仙碱结合位点,有望开发成为新的抗肿瘤药物。
文章的通讯作者是上海药物研究所药物化学胡有洪研究员与药理学楼丽广研究员,其中非常重要的生物功能之一是以纺锤体的形式参与细胞的有丝分裂。(生物探索)
相关英文论文摘要:
Synthesis and Biological Evaluation of 2,4,5-Substituted Pyrimidines as a New Class of Tubulin Polymerization Inhibitors
Members of a series of 2,4,5-substituted pyrimidine derivatives were synthesized, and their interactions with tubulin and their antiproliferative activities against the human hepatocellular carcinoma cells of liver (BEL-7402) were evaluated. One member of this family, the indole-pyrimidine 4k, having an indole-aryl-substituted aminopyrimidine structure, was observed to be an excellent inhibitor of tubulin polymerization (IC50 = 0.79 μM) and to display significantly high antiproliferative activities against several cancer cell lines with IC50 values ranging from 16 to 62 nM. This substance displayed a high propensity to arrests cells at the G2/M phase of the cell cycle (EC50 = 20 nM). In addition, 4k was found to competitively inhibit colchicine binding to tubulin, indicating that it binds to the colchicine-binding site of tubulin. The observations made in this investigation demonstrate that 2,4,5-substituted pyrimidines represent a new class of tubulin polymerization inhibitors with significant antiproliferative activity.
英文论文链接:https://pubs.acs.org/doi/abs/10.1021/jm101388d
使得微管成为比较理想的抗肿瘤药物研究靶点。发现了一类2,4,5-三取代嘧啶类化合物具有较好的抗微管聚集作用。目前这一化合物正在进行成药性和深入的药效学评价阶段,