생명과학회지 (Journal of Life Science)

  • 제27권4호
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  • Pages.423-429
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  • 2017
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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적하수오 에탄올 추출물의 melanin 합성 촉진효과

Promotive Effect of Polygonum multiflorum radix Ethanol Extract on Melanogenesis

  • 투고 : 2016.11.18
  • 심사 : 2017.02.06
  • 발행 : 2017.04.30
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초록

모발의 색은 melanin의 종류와 양에 의해 결정 된다. Melanocyte는 주로 자외선 자극에 의하여 L-tyrosine으로부터 멜라닌을 합성한다. 활성산소종은 백발의 진행과정에 중요한 역할을 하고 있다. 적하수오는 백발화되는 노화과정을 억제한다고 보고되고 있다. 본 연구의 목적은 흑모발생과 연관된 melanin 합성에 대한 적하수오 에탄올 추출물(PMEE)의 효능을 조사한 것이다. 항산화 실험에서 PMEE는 DPPH radical을 감소시켰고 환원력을 증가시켜 PMEE는 백발과정에 관여하는 활성산소종을 소거할 수 있다고 볼 수 있다. PMEE는 농도 의존적으로 세포생존능을 감소시켰다. 더욱이 melanin의 생성에 대한 PMEE의 효과는 DOPA assay와 tyrosinase 활성측정에 의하여 결정되었다. PMEE는 tyrosinase 활성을 증가시켰으며 melanin 합성을 촉진시켰다. 뿐만 아니라 Western blot 분석을 이용하여 tyrosinase, TRP-1, TRP-2 및 MITF 뿐만 아니라 SOD-3와 catalase와 같은 항산화 효소의 단백질 발현을 조사하였다. PMEE의 항산화 활성의 증가로 인하여 SOD-3와 catalase의 발현 수준은 감소된 것으로 나타났다. 특히, PMEE는 tyrosinase와 TRP-2의 발현 수준은 증가시켰다. 이러한 결과들은 PMEE가 백발화 된 모발에서 흑발로 변하는 것과 관련된 melanin 합성을 촉진할 수 있다는 것을 암시하고 있다.

Hair color is determined by kind and amount of melanin. Melanocyte mainly synthesizes melanin from L-tyrosine by stimulation of ultra violet. Reactive oxygen species (ROS) play an important role in greying hair. Polygonum multiflorum radix has been reported to inhibit the aging process that black color of hair is turned into grey color. The aim of this study is to investigate the effect of Polygoni multiflorium radix ethanol extract (PMEE) on melanin synthesis related to black hair growth. In anti-oxidant experiment, PMEE decreased DPPH radical and increased reducing power, indicating that PMEE could eliminate ROS involved in greying hair. PMEE decreased cell viability in a dose-dependent manner. Furthermore, the effect of PMEE on the production of melanin was determined by DOPA assay and tyrosinase activity. PMEE increased tyrosinase activity and promoted melanin synthesis. In addition, the expression levels of tyrosinase, tyrosinase related protein-1 (TRP-1), tyrosinase related protein-2 (TRP-2) and microphthalmia-associated transcription factor (MITF), as well as anti-oxidant enzymes such as superoxide dismutase (SOD-3) and catalase were examined using western blot analysis. The expression levels of SOD-3 and catalase were decreased due to the enhanced antioxidant activity of PMEE. In particular, PMEE increased the expression levels of tyrosinase and TRP-2. These results suggest that PMEE could promote melanin synthesis that involved in tuning gray hair into black hair.

키워드

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