Inhibitory mechanism of sinensetin on α-glucosidase and non-enzymatic glycation: Insights from spectroscopy and molecular docking analyses.
Int J Biol Macromol
; 166: 259-267, 2021 Jan 01.
Article
in En
| MEDLINE
| ID: mdl-33115652
ABSTRACT
Inhibition of α-glucosidase and non-enzymatic glycation is regarded as an effective method to prevent and treat type 2 diabetes and its complications. In this study, the inhibition of sinensetin on α-glucosidase and non-enzymatic glycation was studied with multi-spectroscopic techniques and molecular docking analysis. The results of fluorescence spectroscopy analysis indicated that sinensetin quenched the endogenous fluorescence of α-glucosidase in static manner. The binding of sinensetin with α-glucosidase was a spontaneous process primarily driven by hydrophobic interaction. At 298 K, the binding constant was (5.70 ± 0.12) × 104 L·mol-1 and the binding site number was 1. The conformation of α-glucosidase was altered by sinensetin, which was revealed by circular dichroism (CD), FTIR spectra, synchronous fluorescence and three-dimensional (3D) fluorescence spectroscopy methods. Molecular docking analysis demonstrated that sinensetin interacted with the amino acid residues of α-glucosidase, which might prevent the entrance of substrate, leading to the decrease of catalytic efficiency of α-glucosidase. Furthermore, glycation assays showed that sinensetin stabilized the structure of bovine serum albumins (BSA), interacted with BSA, strongly inhibited the formation of dityrosine, N'-formylkynurenine and advanced glycation end products (AGEs). This study provided useful information concerning sinensetin preventing and treating type 2 diabetes and its related complications.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Flavonoids
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Saccharomyces cerevisiae Proteins
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Alpha-Glucosidases
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Molecular Docking Simulation
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Glycoside Hydrolase Inhibitors
Language:
En
Journal:
Int J Biol Macromol
Year:
2021
Document type:
Article
Publication country:
HOLANDA
/
HOLLAND
/
NETHERLANDS
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NL
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PAISES BAJOS
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THE NETHERLANDS