PMID- 26923950 OWN - NLM STAT- MEDLINE DCOM- 20170515 LR - 20170515 IS - 1522-7243 (Electronic) IS - 1522-7235 (Linking) VI - 31 IP - 7 DP - 2016 Nov TI - Systematical investigation of binding interaction between novel ruthenium(II) arene complex with curcumin analogs and ctDNA. PG - 1384-1394 LID - 10.1002/bio.3119 [doi] AB - In this study, the interaction between a novel ruthenium(II) arene complex with curcumin analogs and calf thymus DNA (ctDNA) was investigated systematically by viscosity measurement, the DNA melting approach, multispectroscopic techniques and electrochemical methods. The absorption spectra of the ctDNA-drug complex showed a slight red shift and a weak hypochromic effect. The relative viscosity and melting temperature of ctDNA increased on addition of the drug. The evidence obtained from fluorescence competitive experiments indicated that the binding mode of the drug with ctDNA was intercalative. Using acridine orange (AO) as a fluorescence probe, the drug statically quenched the fluorescence of the ctDNA-AO complex, and hydrogen bonding and van der Waals interactions played vital roles in the binding interaction between the drug and ctDNA. The influences of ionic strength, chemical denaturants and pH on the binding interaction were also investigated. Circular dichroism and Fourier transform infrared spectra suggested that this drug might bond with the G-C base pairs of ctDNA and the right-handed B-form helicity of ctDNA remained after drug binding. The intercalative binding between the drug and ctDNA was further investigated using electrochemical techniques. All these results suggested that the biological activity of ctDNA was affected by ruthenium(II) arene complex with curcumin analogs. Copyright (c) 2016 John Wiley & Sons, Ltd. CI - Copyright (c) 2016 John Wiley & Sons, Ltd. FAU - Huang, Shan AU - Huang S AD - College of Chemistry and Material Science, Guangxi Teachers Education University, Nanning, 530001, People's Republic of China. AD - Collaborative Innovation Center of Southwest Ethnic Medicine, Guangxi Normal University, Guilin, 541004, People's Republic of China. FAU - Liang, Yu AU - Liang Y AD - College of Chemistry and Material Science, Guangxi Teachers Education University, Nanning, 530001, People's Republic of China. FAU - Huang, Chusheng AU - Huang C AD - College of Chemistry and Material Science, Guangxi Teachers Education University, Nanning, 530001, People's Republic of China. AD - Collaborative Innovation Center of Southwest Ethnic Medicine, Guangxi Normal University, Guilin, 541004, People's Republic of China. FAU - Su, Wei AU - Su W AD - College of Chemistry and Material Science, Guangxi Teachers Education University, Nanning, 530001, People's Republic of China. AD - Collaborative Innovation Center of Southwest Ethnic Medicine, Guangxi Normal University, Guilin, 541004, People's Republic of China. FAU - Lei, Xiaolin AU - Lei X AD - College of Chemistry and Material Science, Guangxi Teachers Education University, Nanning, 530001, People's Republic of China. FAU - Liu, Yi AU - Liu Y AD - State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People's Republic of China. FAU - Xiao, Qi AU - Xiao Q AD - College of Chemistry and Material Science, Guangxi Teachers Education University, Nanning, 530001, People's Republic of China. qi.xiao@whu.edu.cn. AD - Collaborative Innovation Center of Southwest Ethnic Medicine, Guangxi Normal University, Guilin, 541004, People's Republic of China. qi.xiao@whu.edu.cn. AD - State Key Laboratory of Virology, Wuhan University, Wuhan, 430072, People's Republic of China. qi.xiao@whu.edu.cn. LA - eng PT - Journal Article DEP - 20160229 PL - England TA - Luminescence JT - Luminescence : the journal of biological and chemical luminescence JID - 100889025 RN - 0 (Coordination Complexes) RN - 7UI0TKC3U5 (Ruthenium) RN - 9007-49-2 (DNA) RN - 91080-16-9 (calf thymus DNA) RN - IT942ZTH98 (Curcumin) RN - J64922108F (Benzene) SB - IM MH - Animals MH - Benzene/chemistry MH - Binding Sites MH - Cattle MH - Circular Dichroism MH - Coordination Complexes/chemistry MH - Curcumin/*chemistry MH - DNA/*chemistry MH - Electrochemistry MH - Ruthenium/*chemistry MH - Viscosity OTO - NOTNLM OT - calf thymus DNA OT - intercalative binding OT - ruthenium(II) arene complex with curcumin analogs EDAT- 2016/03/01 06:00 MHDA- 2017/05/16 06:00 CRDT- 2016/03/01 06:00 PHST- 2015/12/08 00:00 [received] PHST- 2016/01/17 00:00 [revised] PHST- 2016/01/24 00:00 [accepted] PHST- 2016/03/01 06:00 [pubmed] PHST- 2017/05/16 06:00 [medline] PHST- 2016/03/01 06:00 [entrez] AID - 10.1002/bio.3119 [doi] PST - ppublish SO - Luminescence. 2016 Nov;31(7):1384-1394. doi: 10.1002/bio.3119. Epub 2016 Feb 29.