Synthesis, biological evaluation and molecular docking studies on the DNA and BSA binding interactions of palladium(II) and platinum(II) complexes featuring amides of tetrazol-1-yl- and tetrazol-5-ylacetic acids
作者:Elena A. Popova、Aleksandra V. Protas、Anastasiya V. Mukhametshina、Gayane K. Ovsepyan、Roman V. Suezov、Alexei V. Eremin、Elena I. Stepchenkova、Elena R. Tarakhovskaya、Alexander V. Fonin、Galina L. Starova、Olga V. Mikolaichuk、Yuri B. Porozov、Maksim A. Gureev、Rostislav E. Trifonov
DOI:10.1016/j.poly.2018.10.038
日期:2019.1
calf-thymus DNA (CT DNA) and BSA (bovine serum albumin) was studied by means of CD, UV and fluorometric techniques. According to the spectroscopic data, an interaction of the metal complexes with CT DNA was confirmed. A significant increase in the melting point of CT DNA in the presence of the metal complexes ΔTm = 10.0 °C (for 2b), 12.5 °C (for 5b)} indicates a strong stabilization of the DNA helix. According
反式-[PdCl2(N-环丙基-2-(5-甲基-1H-四唑-1-基)乙酰胺)2] 3b和反式-[PdCl2(N-环己基-2-(5-甲基-1H-四唑- 1-基)乙酰胺)2] 4b}。通过CD,UV和荧光技术研究了复合物2b和5b与小牛胸腺DNA(CT DNA)和BSA(牛血清白蛋白)的结合。根据光谱数据,证实了金属络合物与CT DNA的相互作用。在存在金属络合物的情况下,CT DNA的熔点显着增加ΔTm= 10.0°C(对于2b),12.5°C(对于5b)},表明DNA螺旋结构具有很强的稳定性。根据荧光数据,配合物2b表现出与BSA的相互作用。此外,分子对接结果表明复合物1b及其完全水解的形式(反式[[Pd(H2O)2(2-(5-甲基-1H-四唑-1-基)乙酰胺)2])与DNA相互作用,大概是通过较小的凹槽绑定。水解形式对DNA具有更大的亲和力。同样,通过两个结合位点Trp134和Trp2