Abstract
본 연구는 항주름 소재를 개발하기 위해서 목단피로부터 gallic acid (GA)를 분리하여 항산화능을 측정하였고, HaCaT 세포에서 세포독성을 측정하였다. 또한 HaCaT 세포에서 tumor necrosis factor alpha (TNF-<TEX>${\alpha}$</TEX>)에 의해 유도되는 matrix metalloproteinase-1 (MMP-1) mRNA 발현, protein 발현, 분비에 대한 GA의 영향을 관찰하였다. 결과로써 GA는 30 <TEX>${\mu}g/mL$</TEX>의 <TEX>$IC_{50}$</TEX>과 함께 항산화능을 나타내었고, 그것의 항산화능은 합성항산화제인 butylated hydroxyanisol (BHA)보다 높았다. GA는 HaCaT 세포에서 고농도인 200 <TEX>${\mu}g/mL$</TEX> 처리시 약한 세포독성을 나타내었다. 또한 HaCaT세포에서 TNF-<TEX>${\alpha}$</TEX> (10 ng/mL)의 처리에 의해 증가된 MMP-1의 mRNA 발현, protein 발현, 분비는 GA의 처리에 의해 농도 의존적으로 유의적인 감소를 나타내었다(p<0.05). 그러므로 GA는 항산화 효과와 TNF-<TEX>${\alpha}$</TEX>로부터 유도되는 MMP-1의 발현을 저해함으로써 피부 주름을 개선할 수 있는 주름개선제로서의 활용가능성을 확인하였다. In order to develop anti-wrinkle agent, we measured the anti-oxidative activity of gallic acid (GA) from Paeonia suffruticosa Andrews and investigated its cytotoxicity in HaCaT cells and then investigated its effect on tumor necrosis factor alpha (TNF-<TEX>${\alpha}$</TEX>)-induced matrix metalloproteinase-1 (MMP-1) mRNA, protein expressions and secretion in same cells. GA showed anti-oxidative activity with <TEX>$IC_{50}$</TEX> of 30 <TEX>${\mu}g/mL$</TEX> and its activity was higher than that of butylated hydroxyanisol (BHA). GA showed weak cytotoxicity with high concentration (200 <TEX>${\mu}g/mL$</TEX>) in HaCaT cells. MMP-1 mRNA, protein expression and secretion induced by tumor necrosis factor alpha (TNF-<TEX>${\alpha}$</TEX>) in HaCaT cells were significantly decreased by treatment of GA with dose-dependent manner(p<0.05). Therefore, our findings suggest that GA can be useful as an active ingredient for cosmeceuticals of anti-wrinkle effects.
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