Arene ruthenium(ii) complexes induce S-phase arrest in MG-63 cells through stabilization of c-Myc G-quadruplex DNA
作者:Cundong Fan、Qiong Wu、Tianfeng Chen、Yibo Zhang、Wenjie Zheng、Qi Wang、Wenjie Mei
DOI:10.1039/c3md00367a
日期:——
protein expression. The in vitro DNA-binding behaviors also indicated that 2a could stabilize c-Myc G-quadruplexDNA (G4-DNA) by affecting its conformation. In conclusion, these results suggest that arene Ru(II) complexes coordinated by phenanthroimidazole derivatives serve as c-Myc G4-DNA stabilizers that could induce S-phase arrest in cancer cells by triggering DNA damage, which suggest that these
合成了一系列由菲并咪唑衍生物配位的芳烃钌(II)配合物,并对其体外抗癌活性进行了评估。已经发现这些类型的芳烃Ru(II)配合物,特别是[(C 6 H 6)Ru(o- ClPIP)Cl] Cl·2H 2 O(2a)对几种人类癌细胞系表现出可接受的抗增殖活性。但对正常HK-2人细胞毒性低。机理研究表明2a骨肉瘤MG-63细胞诱导的生长抑制主要是由S期细胞周期停滞引起的,这通过蛋白水平的蛋白质印迹分析通过细胞周期蛋白A和CDK2的下调来证实。此外,在单个细胞水平上使用彗星试验的研究表明,如磷酸化p53和组蛋白的上调所示,2a触发了MG-63细胞的DNA损伤,并随后引发了S期停滞。此外,MG-63细胞暴露于2a导致c-Myc蛋白表达下调。在体外DNA结合行为还指出,图2a能够稳定c-Myc的G-四链体DNA(G4-DNA)通过影响其构象。总之,这些结果表明,由苯并咪唑衍生物配位的芳烃Ru(II)配合物可作为c-Myc
Microwave-Assisted Synthesis of Imidazo[4,5-f][1,10]phenanthroline Derivatives as Apoptosis Inducers in Chemotherapy by Stabilizing Bcl-2 G-quadruplex DNA
further studies showed that 1 can bind to bcl-2 G-quadruplex DNA, which demonstrated by the increase of melting point of bcl-2 G4 DNA in the presence of 1, as well as electronic titration and emission spectra. In a word, this kind of compound may develop as a potential apoptosis inducer in cancer chemotherapy via binding and stabilizing to the bcl-2 G-quadruplex DNA.
Experimental and theoretical study on DNA-binding and photocleavage properties of chiral complexes Δ- and Λ-[Ru(bpy)2L] (L = o-hpip, m-hpip and p-hpip)Electronic supplementary information (ESI) available: electronic spectra and photocleavage diagrams. See http://www.rsc.org/suppdata/dt/b2/b212443b/
作者:Wen J. Mei、Jie Liu、Kang C. Zheng、Li J. Lin、Hui Chao、An X. Li、Feng C. Yun、Liang N. Ji
DOI:10.1039/b212443b
日期:2003.3.24
both complexes [Ru(bpy)2(m-hpip)]2+2 and [Ru(bpy)2(p-hpip)]2+3 can bind to DNA with intercalation; (2) for complexes 2 and 3, a subtle but detectable difference was observed in the interaction of these isomers with CT-DNA. The DNA-binding of the Δ-isomer is stronger than that of Λ-isomer, whereas that of Λ-isomer is swifter. (3) Under irradiation with UV light, Ru(II) complexes 2 and 3 can promote almost
analysis. All the complexes were screened for their in vitro cytotoxicity activity against a panel of human breastcancer cells (CAL-51, MDA-MB-231, and MCF-7), human liver cancer cells (HepG 2, SMMC-7721) and human pancreatic cancer cells (PANC-1) using MTT assay. They have potential proliferative inhibition for all the tested cancer cell lines, especially the triple-negative breastcancer (TNBC) CAL-51