Journal
ADVANCES IN TRADITIONAL MEDICINE
Volume 23, Issue 3, Pages 733-751Publisher
SPRINGER
DOI: 10.1007/s13596-022-00640-8
Keywords
Hyperpigmentation; Melanogenesis; Tyrosinase; Glabridin; 5 '-formylglabridin; Kojic acid; Molecular simulation; Docking; Melanoma; Skin whitening
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This study aims to find a natural and safe alternative molecule as a tyrosinase inhibitor, and evaluates the efficacy of glabridin and its derivatives through modeling, cell experiments, and ADME analysis. Some derivatives show better binding affinity than glabridin, and glabridin effectively inhibits melanin production. Molecular properties and bioactivity analysis suggest these molecules as potential drug candidates.
Hyper-pigmentation conditions may develop due to erroneous melanogenesis cascade which leads to excess melanin production. Recently, inhibition of tyrosinase is the main focus of investigation as it majorly contributes to melanin production. This inhibition property can be exploited in medicine, agriculture, and in cosmetics. Present study aims to find a natural and safe alternative molecule as tyrosinase inhibitor. In this study, human tyrosinase enzyme was modelled due to unavailability of its crystal structure to look into the degree of efficacy of glabridin and its 15 derivatives as tyrosinase inhibitor. Docking was performed by Autodock Vina at the catalytic core enzyme. Glabridin effects on melanoma cell lines was also elucidated by analysing cytotoxicity and effect on melanin production. Computational ADME analysis was done by SwissADME. Molecular dynamic simulation was also performed to further evaluate the interaction profile of these molecules and kojic acid (positive inhibitor) with respect to apo protein. Notably, four derivatives 5'-formylglabridin, glabridin dimer, 5'-prenyl glabridin and R-glabridin exhibited better binding affinity than glabridin. Glabridin effectively inhibited melanin production in a dose dependent manner. Among these, 5'-formylglabridin displayed highest binding affinity with docking score - 9.2 kcal/mol. Molecular properties and bioactivity analysis by Molinspiration web server and by SwissADME also presented these molecules as potential drug candidates. The study explores the understanding for the development of suitable tyrosinase inhibitor/s for the prevention of hyperpigmentation. However, a detailed in vivo study is required for glabridin derivatives to suggest these molecules as anti-melanogenic compound. [GARPHICS].
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