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• W3020242955 abstract "Abstract It is hypothesized that the oxidative/nitrosative stress inhibitory effect of a flavanone is governed by its chemical structure. However, the existing cell‐based antioxidant assays primarily focus on single chemical to initiate toxic species production. In this study, a novel cell model using macrophage treated with a combination of PMA and LPS leading to generation of peroxynitrite was proposed to provide a more real physiological condition. Three flavanones (eriodictyol, naringenin, and pinocembrin) with different number of ortho‐dihydroxyl groups on B‐ring were used to provide a more comprehensive evaluation of the role of chemical structure in the new model. Dihydrorhodamine123 assay, protein immunoblotting, immunofluorescence assay, and in silico analysis by molecular docking between the flavanones and IKKβ catalytic kinase domain at the ATP binding site were employed. Results indicated that the generation of peroxynitrite was decreased at 10 µM of flavanones; eriodictyol was the most effective inhibitor. Western blot analysis and confocal fluorescence image also showed that eriodictyol could inhibit iNOS and p47 protein expressions through the inhibition of NF‐kB translocation and performed the maximal inhibition compared to that of the other groups. In addition, the highest CDOCKER energy values of eriodictyol (38.6703 kcal/mol) confirmed that the 3′,4′‐ortho‐dihydroxylation on the B‐ring played a crucial role in binding with IKKβ kinase domain at ATP binding site. Finally, we propose that the ortho‐dihydroxyl groups on B‐ring of flavanone may influence directly the occupation of the ATP binding site of IKKβ kinase domain leading to the abrogation of peroxynitrite formation in the innovative cell model." @default.
• W3020242955 created "2020-05-01" @default.
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• W3020242955 date "2020-04-27" @default.
• W3020242955 modified "2023-10-02" @default.
• W3020242955 title "An innovative cell model revealed the inhibitory effect of flavanone structure on peroxynitrite production through interaction with the IKKβ kinase domain at ATP binding site" @default.
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• W3020242955 doi "https://doi.org/10.1002/fsn3.1591" @default.
• W3020242955 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7300029" @default.
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