A new ligand DBHIP and its two ruthenium(II) complexes [Ru(dmb)2(DBHIP)](ClO4)2 (1) and [Ru(dmp)2(DBHIP)](ClO4)2 (2) have been synthesized and characterized. The cytotoxicity of DBHIP and complexes 1 and 2 has been assessed by MTT assay. The apoptosis studies were carried out with acridine orange/ethidium bromide (AO/EB) staining methods. The binding behaviors of these complexes to calf thymus DNA
一种新的
配体DBHIP及其两个
钌(II)配合物[Ru(dmb )2(DBHIP)](ClO 4)2(1)和[Ru(dmp)2(DBHIP)](ClO 4)2(2)具有合成并表征。已经通过M
TT测定法评估了DBHIP以及复合物1和2的细胞毒性。用a啶橙/
溴化乙锭(AO / EB)染色方法进行凋亡研究。通过吸收滴定,粘度测量,热变性和光活化裂解研究了这些复合物与小牛胸腺DNA(CT-DNA)的结合行为。复合物1的DNA结合常数和2被确定为8.64±0.16×10 4(s = 1.34)和2.79±0.21×10 4(s = 2.17)M -1。结果表明这些复合物通过插入模式与DNA相互作用。对光裂解机理的研究表明,超
氧阴离子自由基(O 2 •–)和单线态氧(1 O 2)可能在DNA裂解中起重要作用。抗氧化活性的实验表明,这些化合物还对羟基自由基(OH •)表现出良好的抗氧化活性。