한국식품영양학회지 (The Korean Journal of Food And Nutrition)

  • 제23권1호
  • /
  • Pages.118-123
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  • 2010
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  • 1225-4339(pISSN)
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  • 2287-4992(eISSN)
한국식품영양학회 (The Korean Society of Food and Nutrition)
권호 표지

B16 Melanoma Cell에서 티로시나아제 유전자 발현에 황금(Scutellaria baicalensis) 추출물이 미치는 효과

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

  • 조남철 (동강대학 호텔조리영양계열) ;
  • 배석 (전남대학교 생물학과) ;
  • 진종언 (동강대학 피부미용계열)
  • 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)
  • 투고 : 2010.01.02
  • 심사 : 2010.01.29
  • 발행 : 2010.03.30
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초록

유전자 발현 조절 수준에서 멜라닌 색소의 생합성을 조절하는 천연물질을 탐색하고자 황금으로부터 유용성 물질을 추출 및 분획하여 티로시나아제 프로모터 부위를 도입하여 형질전환된 B16 melanoma cell에 처리한 결과, 그 메탄올 추출물의 티로시나아제 유전자 발현율은 $10\;{\mu}g/m{\ell}$와 $100\;{\mu}g/m{\ell}$의 농도에서 대조군 세포에 비해 각각 약 231과 256%로 매우 크게 증진하는 효과를 보여 주었다. 극성도가 서로 다른 용매 분획물들을 형질전환된 세포에 처리하였을 때 methylene chloride와 ethyl acetate 용매 분획물들은 $10\;{\mu}g/m{\ell}$의 농도에서, butyl alcohol 용매 분획물은 $10\;{\mu}g/m{\ell}$와 $100\;{\mu}g/m{\ell}$의 농도에서, 그리고 물 용매 분획물은 $500\;{\mu}g/m{\ell}$의 고농도에서 티로시나아제 유전자의 발현을 증진시키는 효과를 보여 주었다. 그러나 그들의 티로시나아제 발현 증진 효과는 메탄올 추출물보다 낮았다. 황금 메탄올 추출물을 B16 melanoma cell에 처리한 다음 MTT assay를 실시한 결과, $10\;{\mu}g/m{\ell}$와 $100\;{\mu}g/m{\ell}$의 농도에서는 대조군 세포와 세포활성능이 유사할 정도로 세포독성이 매우 낮게 나타났다. 그러나 그 이상의 농도에서는 세포 활성능이 현저하게 낮았으며, 특히 $1,000\;{\mu}g/m{\ell}$의 농도에서는 세포 독성이 심하여 세포의 활성능을 측정하는 것이 불가능하였다. 본 연구결과, 황금 메탄올 추출물 내에는 티로시나아제 유전자의 발현을 증진시키는 데에 관여하는 성분들이 함유되어 있는 것으로 추측된다. 따라서 황금 추출물은 멜라닌 색소의 생합성에 관여하는 유전자의 발현하는 증진시키는 목적으로 이용함이 바람직하며, 이를 산업적으로 응용하기 위해서는 앞으로도 보다 많은 연구가 필요하다.

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.

키워드

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