PMID- 23768360 OWN - NLM STAT- MEDLINE DCOM- 20131231 LR - 20130617 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 141 IP - 1 DP - 2013 Nov 1 TI - The interaction of sesamol with DNA and cytotoxicity, apoptosis, and localization in HepG2 cells. PG - 289-96 LID - S0308-8146(13)00268-9 [pii] LID - 10.1016/j.foodchem.2013.02.105 [doi] AB - Sesamol, a nutritional antioxidant phenolic compound present in sesame seed, has a potential therapeutic molecule effect against cancers. In this study, the interaction between sesamol and DNA was investigated by employing ultraviolet/visible (UV/Vis), fluorescence, circular dichroism (CD), Fourier transform infrared spectroscopy (FT-IR), and molecular modeling. The fluorescence analysis indicated that the fluorescence quenching mechanism of sesamol by calf thymus DNA (ctDNA) occurred through static quenching. The UV/Vis, CD, FT-IR spectra and molecular docking results implied that the primary binding mode was minor groove binding. Furthermore, the intracellular interaction of sesamol with DNA and its bioactivity effect were explored. The cell activity results demonstrated that sesamol induced hepatic cell line (HepG2) death. The acridine orange (AO)/ethidium bromide (EB) staining assay and DNA fragmentation confirmed that sesamol could efficiently induce the apoptosis of HepG2 cells. Moreover, addition of sesamol to HepG2 cells resulted in nuclear localization, as visualized by confocal microscopy. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Liu, Zhigang AU - Liu Z AD - College of Food Science and Engineering, Northwest A&F University, Yangling, China. FAU - Xiang, Qisen AU - Xiang Q FAU - Du, Lihui AU - Du L FAU - Song, Ge AU - Song G FAU - Wang, Yutang AU - Wang Y FAU - Liu, Xuebo AU - Liu X LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130307 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - 0 (Benzodioxoles) RN - 0 (Phenols) RN - 0 (Plant Extracts) RN - 9007-49-2 (DNA) RN - 91080-16-9 (calf thymus DNA) RN - 94IEA0NV89 (sesamol) SB - IM MH - Animals MH - Apoptosis/*drug effects MH - Benzodioxoles/*chemistry/metabolism/*toxicity MH - Cattle MH - Cell Nucleus/drug effects/genetics/*metabolism MH - DNA/*chemistry MH - DNA Fragmentation/drug effects MH - Hep G2 Cells MH - Humans MH - Phenols/*chemistry/metabolism/*toxicity MH - Plant Extracts/*chemistry/metabolism/*toxicity EDAT- 2013/06/19 06:00 MHDA- 2014/01/01 06:00 CRDT- 2013/06/18 06:00 PHST- 2012/09/07 00:00 [received] PHST- 2013/01/10 00:00 [revised] PHST- 2013/02/26 00:00 [accepted] PHST- 2013/06/18 06:00 [entrez] PHST- 2013/06/19 06:00 [pubmed] PHST- 2014/01/01 06:00 [medline] AID - S0308-8146(13)00268-9 [pii] AID - 10.1016/j.foodchem.2013.02.105 [doi] PST - ppublish SO - Food Chem. 2013 Nov 1;141(1):289-96. doi: 10.1016/j.foodchem.2013.02.105. Epub 2013 Mar 7.