Synthesis and biological evaluation of novel shikonin-benzo[b]furan derivatives as tubulin polymerization inhibitors targeting the colchicine binding site.,European Journal of Medicinal Chemistry

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Synthesis and biological evaluation of novel shikonin-benzo[b]furan derivatives as tubulin polymerization inhibitors targeting the colchicine binding site.
European Journal of Medicinal Chemistry ( IF 6.0 ) Pub Date : 2020-01-28 , DOI: 10.1016/j.ejmech.2020.112105
Yu-Ying Shao ₁ , Yong Yin ₁ , Bao-Ping Lian ₁ , Jia-Fu Leng ₁ , Yuan-Zheng Xia ₁ , Ling-Yi Kong ₁

Affiliation

A novel series of shikonin-benzo[b]furan derivatives were designed and synthesized as tubulin polymerization inhibitors, and their biological activities were evaluated. Most compounds revealed the comparable anti-proliferation activities against the cancer cell lines to that of shikonin and simultaneously low cytotoxicity to non-cancer cells. Among them, compound 6c displayed powerful anti-cancer activity with the IC50 value of 0.18 μM against HT29 cells, which was significantly better than that of the reference drugs shikonin and CA-4. What's more, 6c could inhibit tubulin polymerization and compete with [3H] colchicine in binding to tubulin. Further biological studies depicted that 6c can induce cell apoptosis and cell mitochondria depolarize, regulate the expression of apoptosis related proteins in HT29 cells. Besides, 6c actuated the HT29 cell cycle arrest at G2/M phase, and influenced the expression of the cell-cycle related protein. Moreover, 6c displayed potent inhibition on cell migration and tube formation that contributes to the antiangiogenesis. These results prompt us to consider 6c as a potential tubulin polymerization inhibitor and is worthy for further study.

中文翻译：

作为针对秋水仙碱结合位点的微管蛋白聚合抑制剂的新型紫草素-苯并[b]呋喃衍生物的合成及生物学评价。

设计并合成了一系列新的紫草素-苯并[b]呋喃衍生物作为微管蛋白聚合抑制剂，并对其生物学活性进行了评估。大多数化合物显示出与紫草素相当的抗癌细胞增殖活性，同时对非癌细胞具有较低的细胞毒性。其中，化合物6c对HT29细胞显示出强大的抗癌活性，IC50值为0.18μM，显着优于参考药物紫草素和CA-4。而且，6c可以抑制微管蛋白聚合，并与[3H]秋水仙碱竞争与微管蛋白的结合。进一步的生物学研究表明6c可以诱导细胞凋亡并使细胞线粒体去极化，调节HT29细胞中凋亡相关蛋白的表达。除了，6c激活了HT29细胞在G2 / M期的细胞周期停滞，并影响了细胞周期相关蛋白的表达。此外，6c显示出对细胞迁移和管形成的有效抑制，这有助于抗血管生成。这些结果促使我们将6c视为潜在的微管蛋白聚合抑制剂，值得进一步研究。

更新日期：2020-01-29

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