PMID- 12836336 OWN - NLM STAT- MEDLINE DCOM- 20030815 LR - 20191107 IP - 1 DP - 2001 TI - Characterization and formation mechanism of water-insoluble DNA-matrix induced by UV irradiation. PG - 205-6 AB - We have prepared water-insoluble and nuclease resistant DNA-matrixes by UV irradiation. The UV-irradiated DNA-matrix could effectively accumulate and condense harmful DNA-intercalating compounds, such as acridine orange (AO) and ethidium bromide (EB), from diluted aqueous solutions. The binding constant of AO and EB for UV-irradiated DNA were determined to be 1.0 (+/- 0.2) x 10(5) M-1 and 6.8 (+/- 0.3) x 10(4) M-1, respectively; values consisted with reported results for non-irradiated DNA. In addition, the agarose gel electrophoresis and AFM measurements indicate that DNA matrix forms an intermolecular cross-linking structure with the radical reaction. The UV-irradiated DNA-matrixes have potential uses as a biomaterial filter for the removal of harmful DNA intercalating compounds. FAU - Yamada, M AU - Yamada M AD - Division of Bioscience, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan. FAU - Satoh, S AU - Satoh S FAU - Nomizu, M AU - Nomizu M FAU - Ohkawa, K AU - Ohkawa K FAU - Yamamoto, H AU - Yamamoto H FAU - Nishi, N AU - Nishi N LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Nucleic Acids Res Suppl JT - Nucleic acids research. Supplement (2001) JID - 101169367 RN - 0 (Intercalating Agents) RN - 059QF0KO0R (Water) RN - 9007-49-2 (DNA) RN - F30N4O6XVV (Acridine Orange) SB - IM MH - Acridine Orange/metabolism MH - DNA/chemistry/metabolism/*radiation effects/ultrastructure MH - Intercalating Agents/*metabolism MH - Microscopy, Atomic Force MH - *Ultraviolet Rays MH - Water/chemistry EDAT- 2003/07/03 05:00 MHDA- 2003/08/16 05:00 CRDT- 2003/07/03 05:00 PHST- 2003/07/03 05:00 [pubmed] PHST- 2003/08/16 05:00 [medline] PHST- 2003/07/03 05:00 [entrez] AID - 10.1093/nass/1.1.205 [doi] PST - ppublish SO - Nucleic Acids Res Suppl. 2001;(1):205-6. doi: 10.1093/nass/1.1.205.