PMID- 32614132 OWN - NLM STAT- MEDLINE DCOM- 20210728 LR - 20210728 IS - 1522-7243 (Electronic) IS - 1522-7235 (Linking) VI - 36 IP - 1 DP - 2021 Feb TI - Exploring the binding mode of donepezil with calf thymus DNA using spectroscopic and molecular docking methods. PG - 35-44 LID - 10.1002/bio.3911 [doi] AB - Donepezil (DNP) is one of approved drugs to treat Alzheimer's disease (AD). However, the potential effect of DNP on DNA is still unclear. Therefore, the interaction of DNP with calf thymus DNA (DNA) was studied in vitro using spectroscopic and molecular docking methods. Steady-state and transient fluorescence experiments showed that there was a clear binding interaction between DNP and DNA, resulting from DNP fluorescence being quenched using DNA. DNP and DNA have one binding site between them, and the binding constant (K(b) ) was 0.78 x 10(4) L.mol(-1) at 298 K. In this binding process, hydrophobic force was the main interaction force, because enthalpy change (DeltaH) and entropy change (DeltaS) of DNP-DNA were 67.92 kJ.mol(-1) and 302.96 J.mol(-1) .K(-1) , respectively. DNP bound to DNA in a groove-binding mode, which was verified using a competition displacement study and other typical spectroscopic methods. Fourier transform infrared (FTIR) spectrum results showed that DNP interacted with guanine (G) and cytosine (C) bases of DNA. The molecular docking results further supported the results of spectroscopic experiments, and suggested that both Pi-Sigma force and Pi-Alkyl force were the major hydrophobic force functioning between DNP and DNA. CI - (c) 2020 John Wiley & Sons, Ltd. FAU - Guo, Hui AU - Guo H AD - College of Chemistry, Nanchang University, Nanchang, Jiangxi, China. FAU - Xie, Jiawen AU - Xie J AD - College of Chemistry, Nanchang University, Nanchang, Jiangxi, China. FAU - Liao, Tancong AU - Liao T AD - School of Life Sciences, Nanchang University, Nanchang, Jiangxi, China. FAU - Tuo, Xun AU - Tuo X AUID- ORCID: 0000-0001-5766-763X AD - College of Chemistry, Nanchang University, Nanchang, Jiangxi, China. LA - eng GR - 20181BAB204003/Natural Science Foundation of Jiangxi Province/ GR - NSFC-31860153/National Natural Science Foundation of China/ PT - Journal Article DEP - 20200718 PL - England TA - Luminescence JT - Luminescence : the journal of biological and chemical luminescence JID - 100889025 RN - 8SSC91326P (Donepezil) RN - 9007-49-2 (DNA) RN - 91080-16-9 (calf thymus DNA) SB - IM MH - Binding Sites MH - Circular Dichroism MH - *DNA MH - Donepezil MH - Molecular Docking Simulation MH - Spectrometry, Fluorescence MH - Spectrophotometry, Ultraviolet MH - Thermodynamics OTO - NOTNLM OT - calf thymus DNA OT - donepezil OT - interaction OT - molecular docking OT - spectroscopy EDAT- 2020/07/03 06:00 MHDA- 2021/07/29 06:00 CRDT- 2020/07/03 06:00 PHST- 2020/01/26 00:00 [received] PHST- 2020/06/18 00:00 [revised] PHST- 2020/06/30 00:00 [accepted] PHST- 2020/07/03 06:00 [pubmed] PHST- 2021/07/29 06:00 [medline] PHST- 2020/07/03 06:00 [entrez] AID - 10.1002/bio.3911 [doi] PST - ppublish SO - Luminescence. 2021 Feb;36(1):35-44. doi: 10.1002/bio.3911. Epub 2020 Jul 18.