作者:Ya-Fei Liu、Hao-Nan Yuan、Xiu-Li Bi、Hu-Ri Piao、Jia-Qing Cao、Wei Li、Peng Wang、Yu-Qing Zhao
DOI:10.1016/j.steroids.2013.09.010
日期:2013.12
(20R)-25-Methoxyl-dammarane-3 beta,12 beta,20-triol (25-OCH3-PPD) is a dammarane-type sapogenin showing anti-proliferative potential. In our study, two series of analogs substituted at the C-3 or C-3 and C-12 positions with fatty acids were prepared conveniently. The cytotoxic activity of these compounds was evaluated using four different human tumor cell lines (A549, Hela, HT-29 and MCF-7) and a normal cell line (IOSE144). As compared with 25-OCH3-PPD, compounds 1a, 1b, 2a and 2b showed better anti-proliferative activities against all tumor cell lines and all the derivatives, with low toxicities in the normal cell line. Compound 1a (C-3 monoformiate) exhibited the strongest activity with the IC50 value of 5.2 mu M towards HT29 cells. The results indicated that the difference in the substituents may affect the anti-proliferative activity of the compounds. The longer the side chain of 25-OCH3-PPD is, the lower the anti-proliferative activity would be. This information may be useful for evaluating the structure-activity relationship of other dammarane-type sapogenins and for development of novel antineoplastic agents. (C) 2013 Elsevier Inc. All rights reserved.
(20R)-25-甲氧基大戟烷-3β,12β,20-三醇(25-OCH3-PPD)是一种具有抗增殖潜力的大戟烷型皂苷元。在我们的研究中,我们方便地制备了两组在C-3位或C-3和C-12位上取代了脂肪酸的类似物。通过使用四种不同的人类肿瘤细胞系(A549、Hela、HT-29 和 MCF-7)以及一种正常细胞系(IOSE144),我们评估了这些化合物的细胞毒性活性。与25-OCH3-PPD相比,化合物1a、1b、2a和2b对所有肿瘤细胞系和所有衍生物都表现出更好的抗增殖活性,并且在正常细胞系中具有低毒性。化合物1a(C-3位单甲酸酯)对HT29细胞表现出最强的活性,其IC50值为5.2微摩尔。结果表明,取代基的差异可能影响化合物的抗增殖活性。25-OCH3-PPD的侧链越长,其抗增殖活性越低。这一信息可能对评估其他大戟烷型皂苷元的结构-活性关系以及开发新型抗肿瘤药物有用。© 2013 Elsevier Inc. 保留所有权利。