PMID- 16650923 OWN - NLM STAT- MEDLINE DCOM- 20060927 LR - 20211020 IS - 0301-4622 (Print) IS - 1873-4200 (Electronic) IS - 0301-4622 (Linking) VI - 123 IP - 1 DP - 2006 Aug 20 TI - The "interceptor" properties of chlorophyllin measured within the three-component system: intercalator-DNA-chlorophyllin. PG - 11-9 AB - In aqueous solutions, in the presence of double-stranded DNA, chlorophyllin (CHL) forms complexes with each of the three DNA intercalators: acridine orange (AO), quinacrine mustard (QM), and doxorubicin (DOX). The evidence for these interactions was obtained by measurement changes in the absorption and fluorescence spectra of the mixtures containing DNA and intercalators during titration with CHL. A model of simple competition between DNA and CHL for the intercalator was used to define the measured interactions. The concentrations of the complexes estimated based on this model were consistent with the concentrations obtained by actual measurement of the absorption spectra. The present data provide further support for the role of chlorophyllin as an "interceptor" that may neutralize biological activity of aromatic compounds including mutagens and antitumor drugs. FAU - Pietrzak, Monika AU - Pietrzak M AD - Department of Physics and Biophysics, University of Warmia and Mazury in Olsztyn, Oczapowskiego 4, 10-719 Olsztyn, Poland. FAU - Wieczorek, Zbigniew AU - Wieczorek Z FAU - Wieczorek, Jolanta AU - Wieczorek J FAU - Darzynkiewicz, Zbigniew AU - Darzynkiewicz Z LA - eng GR - R01 CA028704/CA/NCI NIH HHS/United States GR - R01 CA028704-27/CA/NCI NIH HHS/United States GR - CA 28704/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20060406 PL - Netherlands TA - Biophys Chem JT - Biophysical chemistry JID - 0403171 RN - 0 (Chlorophyllides) RN - 0 (Intercalating Agents) RN - 9007-49-2 (DNA) RN - EEM82VOY7C (chlorophyllin) SB - IM MH - Chlorophyllides/*chemistry MH - DNA/*chemistry MH - Intercalating Agents/*chemistry MH - Spectrometry, Fluorescence PMC - PMC3488280 MID - NIHMS76826 EDAT- 2006/05/03 09:00 MHDA- 2006/09/28 09:00 PMCR- 2012/11/03 CRDT- 2006/05/03 09:00 PHST- 2006/01/13 00:00 [received] PHST- 2006/03/28 00:00 [revised] PHST- 2006/03/30 00:00 [accepted] PHST- 2006/05/03 09:00 [pubmed] PHST- 2006/09/28 09:00 [medline] PHST- 2006/05/03 09:00 [entrez] PHST- 2012/11/03 00:00 [pmc-release] AID - S0301-4622(06)00101-3 [pii] AID - 10.1016/j.bpc.2006.03.018 [doi] PST - ppublish SO - Biophys Chem. 2006 Aug 20;123(1):11-9. doi: 10.1016/j.bpc.2006.03.018. Epub 2006 Apr 6.