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- W4308488858 endingPage "112052" @default.
- W4308488858 startingPage "112052" @default.
- W4308488858 abstract "The role of metal complexes on facing DNA has been a topic of major interest. However, metallonitrosyl compounds have been poorly investigated regarding their reactivities and interaction with DNA. A nitrosyl compound, cis-[Ru(bpy)2(SO3)(NO)](PF6)(A), showed a variety of promising biological activities catching our attention. Here, we carried out a series of studies involving the interaction and damage of DNA mediated by the metal complex A and its final product after NO release, cis-[Ru(bpy)2(SO3)(H2O](B). The fate of DNA with these metal complexes was investigated upon light or chemical stimuli using electrophoresis, electronic absorption spectroscopy, circular dichroism, size-exclusion resin, mass spectrometry, electron spin resonance (ESR) and viscometry. Since many biological disorders involve the production of oxidizing species, it is important to evaluate the reactivity of these compounds under such conditions as well. Indeed, the metal complex B exhibited important reactivity with H2O2 enabling DNA degradation, with detection of an unusual oxygenated intermediate. ESR spectroscopy detected mainly the DMPO-OOH adduct, which only emerges if H2O2 and O2 are present together. This result indicated HOO• as a key radical likely involved in DNA damage as supported by agarose gel electrophoresis. Notably, the nitrosyl ruthenium complex did not show evidence of direct DNA damage. However, its aqua product should be carefully considered as potentially harmful to DNA deserving further in vivo studies to better address any genotoxicity." @default.
- W4308488858 created "2022-11-12" @default.
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- W4308488858 date "2023-01-01" @default.
- W4308488858 modified "2023-09-27" @default.
- W4308488858 title "Reactivity of a nitrosyl ruthenium complex and its potential impact on the fate of DNA – An in vitro investigation" @default.
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- W4308488858 doi "https://doi.org/10.1016/j.jinorgbio.2022.112052" @default.
- W4308488858 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36334365" @default.
- W4308488858 hasPublicationYear "2023" @default.
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