Recently various drug candidates with excellent anticancer potency have been demonstrated, whereas their clinical application largely suffers from several limitations especially poor solubility. Ursolic acid (UA) as one of ubiquitous pentacyclic triterpenes in plant kingdom exhibited versatile antiproliferative effects in various cancer cell lines. However, the unfavorable pharmaceutical properties became the main obstacle for its clinical development. With the aim of development of novel derivatives with enhanced potency, a series of diversified UA amphiphiles have been designed, synthesized, and pharmacologically evaluated. Amphiphile 10 (FZU-03,010) with significant improved antiproliferative effect can self-assemble into stable nanoparticles in water, which may serve as a promising candidate for further development. (C) 2016 Elsevier Ltd. All rights reserved.
Synthesis and biological evaluation of triterpenoid thiazoles derived from betulonic acid, dihydrobetulonic acid, and ursonic acid
In this work, 35 new derivatives of betulonic, dihydrobetulonic and ursonic acid were prepared including 30 aminothiazoles and all of them were tested for their in vitro cytotoxic activity in eight cancer cell lines and two non-cancer fibroblasts. Compounds with the IC50 below 5 μM in CCRF-CEM cells and low toxicity in non-cancer fibroblasts (4m, 5c, 5m, 6c, 6m, 7b, and 7c) were further subjected to
and evaluated for their antiproliferative activity against the Hela and MKN45 cell lines. Some compounds containing a piperazine moiety displayed moderate to high levels of antitumor activities against the tested cancer cell lines. The most potent compound shares the IC50 value of 2.1 µM and 2.6 µM for the Hela and MKN45 cell lines, respectively. Further mechanism studies and in vivo antitumor studies
设计、合成了 19 种熊果酸类似物,并评估了它们对 Hela 和 MKN45 细胞系的抗增殖活性。一些含有哌嗪部分的化合物对所测试的癌细胞系显示出中等至高水平的抗肿瘤活性。对于 Hela 和 MKN45 细胞系,最有效的化合物的 IC50 值分别为 2.1 µM 和 2.6 µM。进一步的机制研究和体内抗肿瘤研究表明,它降低了细胞凋亡调节因子 (BCL2/BAX) 的比例,破坏了线粒体电位并诱导了细胞凋亡,并抑制了 Hela 异种移植物在裸鼠体内的生长。