a Research Center for Molecular Medicine , Hamadan University of Medical Sciences , Hamadan , Iran.
b Department of Immunology, School of Medicine , Hamadan University of Medical Sciences , Hamadan , Iran.
J Biomol Struct Dyn. 2019 Jul;37(11):2789-2800. doi: 10.1080/07391102.2018.1497543. Epub 2018 Oct 22.
In this study, Farnesiferol C was introduced as an anti-colon cancer agent. Its cytotoxicity was investigated on two cancer cell lines, HCT116 and CT26, and mesenchymal stem cells (MSCs) as normal cells employing MTT assay. Moreover, Farnesiferol C interactions with ct-DNA and HSA were investigated by various techniques. The IC values of Farnesiferol C on HCT116 and CT26 cells were 42 and 46 μM, respectively, while its IC value on MSCs cells was 92 μM, indicating that Farnesiferol C was more efficacious against cancer cell lines than normal cells. DNA competitive binding studies, viscosity and zeta potential measurements confirmed that Farnesiferol C bound to DNA through intercalation binding. HSA binding investigations revealed that there were two different binding sites for Far C on HSA with higher binding affinity in site 2 compared to site 1. Furthermore, Farnesiferol C could bind to HSA and quench its intrinsic fluorescence in a static quenching mechanism, with a distance of 2.54 nm. Competitive binding in the presence of warfarin and ibuprofen was carried out and the resulting quenching constant was strongly changed in the presence of warfarin. Consequently, Farnesiferol C most probably will be located within sub-domain IIA. In this study, molecular modeling buttressed and confirmed our laboratory results. Conclusively, we proposed that DNA is an appropriate target for Farnesiferol C. Therefore, Farnesiferol C and its semisynthetic analogues can be one of the priority innovations in research on anticancer drugs.
在这项研究中,法呢基瑞香素 C 被引入作为一种抗结肠癌药物。采用 MTT 法,在两种癌细胞系 HCT116 和 CT26 及间充质干细胞(MSCs)作为正常细胞中研究了其细胞毒性。此外,还通过多种技术研究了法呢基瑞香素 C 与 ct-DNA 和 HSA 的相互作用。Farnesiferol C 对 HCT116 和 CT26 细胞的 IC 值分别为 42 和 46 μM,而对 MSCs 细胞的 IC 值为 92 μM,表明 Farnesiferol C 对癌细胞系比正常细胞更有效。DNA 竞争结合研究、粘度和ζ电位测量证实 Farnesiferol C 通过嵌入结合与 DNA 结合。HSA 结合研究表明,Far C 在 HSA 上有两个不同的结合位点,与 site 1 相比,site 2 的结合亲和力更高。此外,Farnesiferol C 可以与 HSA 结合并以静态猝灭机制猝灭其固有荧光,距离为 2.54nm。在华法林和布洛芬存在的情况下进行了竞争性结合,在华法林存在的情况下猝灭常数发生了强烈变化。因此,Farnesiferol C 很可能位于亚域 IIA 内。在这项研究中,分子建模支持并证实了我们的实验室结果。总之,我们提出 DNA 是 Farnesiferol C 的合适靶标。因此,法呢基瑞香素 C 及其半合成类似物可以成为抗癌药物研究的优先创新之一。