薯蓣皂苷元抗肿瘤衍生物的设计、合成与抗肿瘤活性

Novel derivatives of diosgenin: design,synthesis and anti-tumor activity

薯蓣皂苷元对A375、K562等细胞株具有抑制生长并诱导其凋亡的作用。其作用靶点之一是线粒体中的Bcl-2亚家族蛋白。本文以Bcl-2为靶点,运用Autodock设计并合成了一系列全新的薯蓣皂苷元衍生物,希望完善相关化合物的构效关系及提高其抗肿瘤活性。MTT法体外抗肿瘤活性研究结果表明,所设计的化合物大多对K562、A375、A549等3种肿瘤细胞株有较好的抑制作用,而对H293、L02等2种正常细胞株无明显作用。其中,化合物1、6～8对K562表现出了较好的活性(IC50值为1.96～4.35μmol.L-1)。

Diosgenin can inhibit the growth ofA375 and K562 cell lines and induce their apoptosis with an effect on pro-apoptotic members of Bcl-2 family. To study the SAR of diosgenin derivatives, and to improve the anti-tumor activity of diosgenin, a series of novel diosgenin derivatives were designed and synthesized. Their anti-tumor activities in vitro were evaluated. The results revealed that most of the new derivatives had potent effects against K562, A375 and A549 （three tumor cell lines） in vitro, and had no or less effect against H293 and L02 （two normal cell lines）. Particularly, some compounds （e.g. 1, 6-8） showed excellent activities on K562 with IC50 values ranging from 1.96 to 4.35 Imaol＇L-1.