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Effects of Scutellaria baicalensis Extracts on Tyrosinase Gene Expression in B16 Melanoma Cells  

Cho, Nam-Chul (Dept. of Hotel Culinary Arts & Nutrition, Dongkang College)
Bai, Suk (Dept. of Biological Sciences, Chonnam National University)
Chin, Jong-Eon (Dept. of Cosmetology, Dongkang College)
Publication Information
The Korean Journal of Food And Nutrition / v.23, no.1, 2010 , pp. 118-123 More about this Journal
Abstract
To estimate the regulatory effects of Scutellaria baicalensis extracts on melanin biosynthesis, we evaluated the regulatory effects of the tyrosinase gene on B16 melanoma cells. The results revealed that methanolic extracts of Scutellaria baicalensis resulted in a high increase in the expression of the tyrosinase gene. Specifically, treatment with extracts at concentrations of $10\;{\mu}g/m{\ell}$ and $100\;{\mu}g/m{\ell}$ resulted in increases in tyrosinase gene expression rates of approximately 231% and 256%, respectively, when compared to the control. Moreover, the solvent fraction layers(methylene chloride, ethyl acetate, butyl alcohol, water) improved the expression of the tyrosinase gene, but to a lesser degree than the methanolic extracts. An MTT assay revealed, that the methanolic extract exhibited very low cytotoxicities at $10\;{\mu}g/m{\ell}$ and $100\;{\mu}g/m{\ell}$. Taken together, the results of this study indicated that the methanolic extracts of Scutellaria baicalensis was a very effective positive regulator of tyrosinase gene expression.
Keywords
melanin; Scutellaria baicalensis; B16 melanoma cells; tyrosinase gene expression; MTT assay;
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