title: DNA Nanogels To Snare Carcinogens: A Bioinspired Generic Approach with High Efficiency.
abstract: Polycyclic aromatic hydrocarbons (PAHs) are combustion-related pollutants and are ubiquitous in the environment, including in sources of drinking water. Upon contact with DNA, stable PAH-DNA adducts form rapidly as the first step towards their toxic effects. In this work, we prepared hydrophilic DNA nanogels to exploit this generic complexation process as a biomimetic scavenging method. This approach relies on interaction between PAHs and the complete network that constitutes the water-swollen nanogels, and is not restricted to interfacial adsorption. Up to 720 μg of PAH per gram of DNA nanogel are taken up, meaning that 1 mg of DNA nanogel is sufficient to purify a liter of water containing the critical PAH concentration for cancer risk (600 ng L(-1) ). As a result of short diffusion pathways, PAH uptake is rapid, reaching 50 % loading after 15 minutes. Beyond PAHs, DNA nanogels may be useful for the generic detoxification of water containing genotoxins, since most known molecules that strongly associate with DNA are mutagenic.
authors: DWI-Leibniz Institut für Interaktive Materialien, RWTH Aachen, Forckenbeckstrasse 50, 52074, Aachen, Deutschland. fuat.topuz@rwth-aachen.de.
authors: Fuat
authors: F
authors: Topuz
authors: DWI-Leibniz Institut für Interaktive Materialien, RWTH Aachen, Forckenbeckstrasse 50, 52074, Aachen, Deutschland.
authors: Smriti
authors: S
authors: Singh
authors: Abteilung für Funktionswerkstoffe der Medizin und der Zahnheilkunde und Bayerisches Polymerinstitut (BPI), Universitätsklinikum Würzburg, Pleicherwall 2, 97070, Würzburg, Deutschland.
authors: Krystyna
authors: K
authors: Albrecht
authors: DWI-Leibniz Institut für Interaktive Materialien, RWTH Aachen, Forckenbeckstrasse 50, 52074, Aachen, Deutschland.
authors: Martin
authors: M
authors: Möller
authors: Abteilung für Funktionswerkstoffe der Medizin und der Zahnheilkunde und Bayerisches Polymerinstitut (BPI), Universitätsklinikum Würzburg, Pleicherwall 2, 97070, Würzburg, Deutschland. juergen.groll@fmz.uni-wuerzburg.de.
authors: Jürgen
authors: 0000-0003-3167-8466
authors: J
authors: Groll
mesh_terms: D000327:Adsorption; D002273:Carcinogens / Q000737:chemistry*; D002942:Circular Dichroism; D004247:DNA / Q000737:chemistry*; D018736:DNA Adducts / Q000737:chemistry; D000080385:Nanogels; D011084:Polycyclic Aromatic Hydrocarbons / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D011094:Polyethyleneimine / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry
chemical_list: D002273:Carcinogens; D018736:DNA Adducts; D000080385:Nanogels; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; C095911:polycyclic aromatic hydrocarbons-DNA adduct; C413692:polyethylene glycol polyethyleneimine nanogel; D011092:Polyethylene Glycols; D011094:Polyethyleneimine; D004247:DNA
keywords: DNA; environmental chemistry; intercalation; nanogels; toxins