Synthesis, biological evaluation, drug-likeness, and in silico screening of novel benzylidene-hydrazone analogues as small molecule anticancer agents
作者:Mohammad Sayed Alam、Dong-Ung Lee
DOI:10.1007/s12272-015-0699-z
日期:2016.2
A series of fifteen benzylidene-hydrazone analogues (3a–o), including eight new compounds, were synthesized and evaluated for their cytotoxic activities in four human cancer cell lines and for their antioxidant activities using DPPH. Of the tested compounds 3e, which possesses two methoxy substituents in its benzylidene phenyl ring, was found to be potently cytotoxic to all cancer cell lines tested with IC50 values of 0.12 (lung), 0.024 (ovarian), 0.097 (melanoma), and 0.05 μM (colon), and these IC50 values were comparable to those of the doxorubicin standard (IC50 = 0.021, 0.074, 0.001, and 0.872 μM, respectively). DPPH assay showed compounds 3f, 3i, and 3g had IC50 values of 0.60, 0.99, and 1.30 μM, respectively, which were comparable to that of ascorbic acid (IC50 = 0.87 μM). Computational parameters such as, drug-likeness, ADME properties, toxicity effects, and drug scores were evaluated, and none of the fifteen compounds violated Lipinski’s rule of five or Veber’s rule, and thus they demonstrated good drug-likeness properties. In addition, all fifteen compounds had a higher drug score than the doxorubicin and BIBR1532. In silico screening was also conducted by docking of the active compounds on the active site of telomerase reverse transcriptase catalytic subunit, an important therapeutic target of anticancer agents, to determine the probable binding properties. The total binding energies of docked compounds are correlated well with cytotoxic potencies (pIC50) against lung, ovarian, melanoma, and colon cancer cell lines indicating that the benzylidene-hydrazones could use for the development of new anticancer agents as a telomerase inhibitor.
一系列十五种苯亚甲基酰肼类似物(3a-o),包括八种新化合物,被合成并评估了它们在四种人类癌细胞系中的细胞毒活性和使用DPPH的抗氧化活性。在测试的化合物中,3e在苯亚甲基苯环上有两个甲氧基取代基,被发现对所有测试的癌细胞系都有很强的细胞毒性,IC50值分别为0.12(肺),0.024(卵巢),0.097(黑色素瘤)和0.05μM(结肠),这些IC50值与多柔比星标准(IC50=0.021,0.074,0.001,和0.872μM,分别)相当。DPPH实验显示化合物3f,3i和3g的IC50值分别为0.60,0.99和1.30μM,与抗坏血酸(IC50=0.87μM)相当。评估了计算参数,如药物相似性,ADME性质,毒性效应和药物得分,十五种化合物都没有违反利普斯基的五规则或维伯规则,因此它们显示出良好的药物相似性。此外,所有十五种化合物的药物得分都高于多柔比星和BIBR1532。还通过将活性化合物对接在端粒酶逆转录酶催化亚基的活性位点上,这是抗癌药物的重要治疗靶点,以确定可能的结合性质。对接化合物的总结合能与对肺,卵巢,黑色素瘤和结肠癌细胞系的细胞毒性强度的对数(pIC50)很好地相关,表明苯亚甲基酰肼可以作为端粒酶抑制剂用于新抗癌药物的开发。