백렴으로부터 항산화 물질의 분리와 자외선이 조사된 사람 섬유아세포의 Matrix Metalloproteinase-1 발현에 미치는 영향

Antioxidant Constituents from Melothria heterophylla; Regulation of Matrix Metalloproteinase-1 Expression in Ultraviolet A-irradiated Human Dermal Fibroblasts

  • 조영호 (한불화장품㈜ 기술연구소) ;
  • 김진희 (한불화장품㈜ 기술연구소) ;
  • 심관섭 (한불화장품㈜ 기술연구소) ;
  • 이범천 (한불화장품㈜ 기술연구소) ;
  • 표형배 (한불화장품㈜ 기술연구소)
  • 발행 : 2005.12.31

초록

노화에 미치는 자외선의 영향에 대해 많은 연구가 진행되어 왔지만, 천연물에 대한 연구는 별로 알려진 것이 없다. MMPs는 광노화 과정에 매우 중요한 역할을 하는 것으로 알려져 있다. 본 연구에서는 MMP-1의 발현과 활성 및 항산화 효과에 미치는 $1,2,4,6-tetra-O-galloyl-{\beta}-{_D}-glucopyranose$와 3,4,5-trihydroxybenzoic acid의 효과를 측정하였다. 이들 화합물은 박과의 백렴으로부터 분리하였으며, 자유 라디칼과 활성산소 소거활성이 매우 높은 것으로 나타났다. 이들 화합물의 DPPH 라디칼과 활성산소를 50% 소거하는 활성$(SC_{50})$은 각각 $3.9{\mu}M,\;13.3{\mu}M,\;4.3{\mu}M,\;4.0{\mu}M$로 나타났다. 또한, 이들 화합물은 단백질 수준에서의 MMP-1 발현 및 활성을 처리농도 의존적으로 저해하였지만, 유전자 수준에서는 저해활성이 없는 것으로 나타났다 따라서, 이들 화합물은 단백질 수준에서의 우수한 MMP-1 발현 저해능과 높은 항산화 활성을 가지는 것을 알 수 있다. 결론적으로 이들 화합물은 새로운 항노화 소재로 적용될 수 있을 것으로 기대된다

Although many studies have been performed to elucidate the molecular consequence of ultraviolet irradiation on an aging, little is known about the effect of natural products. Matrix metalloproteinases (MMPs) we known to play an important role in (a) photoaging. Hete we investigated the effect of $1,2,4,6-tetra-O-galloyl-{\beta}-{_D}-gluco- pyranose (1)$ and 3,4,5-trihydroxybenzoic acid (2) on the expression of MMP-1 in UVA-irradiated human skin fibroblasts (products), (on the) activity of MMP-1, and (on the) scavenging activities of free radicals. Compounds 1 and 2 were isolated from Melothria heterophylla (Cucurbitaceae). These compounds were found to scavenge free radicals and reactive oxygen species (ROS) and were measured to have the $SC_{50}$ values of $3.9{\mu}M\;and\;13.3{\mu}M$ against the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals and $4.3{\mu}M\;and\; 4.0{\mu}M$ against superoxide radicals in the xanthine/xanthine oxidase system, respectively. Compounds 1 and 2 showed a dose-dependent inhibitory effect on the e):pression and activity of MMP-1 in the UVA-irradiated human skin fibroblasts. Therefore, we concluded that compounds 1 and 2 significantly inhibited MMP-1 expression at the protein level. Also, these compounds were determined to have a potent antioxidant activity. From these results, we suggest that these compounds nay be used as (a) new anti-aging agents for the photo-damaged skin.

키워드

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