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• W2904993298 abstract "Abstract BACKGROUND 5‐Hydroxymethyl‐2‐furaldehyde (5‐HMF), a by‐product of the Maillard reaction, usually present in fried and baked food, may cause potential harm to the human body. Here, the interaction between 5‐HMF and calf thymus DNA (ctDNA) under physiological buffer (pH 7.4) was studied using multi‐spectroscopic methods combined with multivariate curve resolution–alternating least squares (MCR‐ALS) chemometrics and molecular simulation techniques. RESULTS The concentration profiles and pure spectra of the three components (5‐HMF, ctDNA and 5‐HMF–ctDNA complex) were extracted from highly overlapping spectra using MCR‐ALS analysis, which verified the formation of 5‐HMF–ctDNA complex. The binding constant being of the order of 10 3 L mol −1 at four temperatures (292, 298, 304 and 310 K) indicated a weak affinity in the binding of 5‐HMF to ctDNA. The binding interaction was mainly driven by hydrogen bonds and van der Waals forces. Viscosity analysis, melting assay, ionic strength effect and competitive fluorescence studies ascertained that 5‐HMF bound to ctDNA through groove binding, and it tended to bind to guanine–cytosine rich region of ctDNA which was characterized using Fourier transform infrared spectra and molecular docking. Circular dichroism spectral analysis and DNA cleavage assays indicated that the ctDNA conformation was altered from B to A form and 5‐HMF caused DNA damage at higher concentration. CONCLUSIONS The results suggested that 5‐HMF bound to ctDNA through groove binding and caused DNA damage. This research may contribute to understand the binding mechanism of 5‐HMF to ctDNA and to the assessment of the toxicological effect of 5‐HMF in biological processes. © 2018 Society of Chemical Industry" @default.
• W2904993298 created "2018-12-22" @default.
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• W2904993298 date "2019-01-30" @default.
• W2904993298 modified "2023-10-16" @default.
• W2904993298 title "Exploring the binding interaction of Maillard reaction by‐product 5‐hydroxymethyl‐2‐furaldehyde with calf thymus DNA" @default.
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• W2904993298 doi "https://doi.org/10.1002/jsfa.9536" @default.
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