Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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Anti-cancer Activity of Styrax japonica Bark Extrats

때죽나무(Styrax japonica) 수피 추출물의 항암 활성

  • Kwon, Oh-Woong (Department of Variety Examination Korea Forest Seed and Variety Center) ;
  • Kim, Woo-Jin (Division Wood Chemistry & Microbiology Korea Forest Research Institute) ;
  • Lee, Hak-Ju (Division Wood Chemistry & Microbiology Korea Forest Research Institute)
  • 권오웅 (국립산림품종관리센터 품종심사과) ;
  • 김우진 (국립산림과학원 화학미생물과) ;
  • 이학주 (국립산림과학원 화학미생물과)
  • Received : 2013.07.16
  • Accepted : 2014.01.10
  • Published : 2014.01.25
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Abstract

A compound has been isolated from the methanol extract of Styrax japonica bark using conventional chromatographic methods including silica gel chromatography, TLC and HPLC. The molecular formula of Styraxlignolide F analyzed by spectrometric analyses using FAB-MS, NMR was found to be $C_{27}H_{34}O_{11}Na$. The cytotoxicity of the styralignolide F was showed 15.2% in $1.0mg/m{\ell}$ on human kidney cell (HEK 293). As anticancer activity of $CH_2Cl_2$ fraction, over 60% of AGS and MCF-7 cells were inhibited in concentration of $1.0mg/m{\ell}$. In the results of anticancer test using quantification of Bcl-2, $CH_2Cl_2$ fraction showed lower Bcl-2 and p53 expression than those of styraxlignolide F and other fractions. In apoptosis of human lung carcunoma cancer cell (A549), $CH_2Cl_2$ fraction showed the highest inhibition rate (46.9%) and styralignolide F was the next (43.5%). The $CH_2Cl_2$ fraction showed higher anti-cancer activities than isolated substance (styraxlignolide F), probably due to the crude extract showing synergic effects by other components.

때죽나무(Styrax japonica) 수피 메탄올 추출물에서 단리된 화합물은 TLC 및 HPLC, coulmn chromatography 방법을 이용한 실리카겔 chromatography로 분리하였다. FAB-MS, NMR 분석을 통해 화합물의 구조를 구명한 결과 분자식은 $C_{27}H_{34}O_{11}Na$이고 화합물명은 styraxlignolide F로 판명되었다. 인간 정상 신장세포인 HEK293을 이용한 세포독성을 살펴본 결과, 각 추출물은 $1.0mg/m{\ell}$의 농도에서 15.2%의 낮은 세포독성을 나타내었다. AGS와 MCF-7 세포에서의 항암활성은 $CH_2Cl_2$ 가용부가 $1.0mg/m{\ell}$ 농도에서 60% 이상의 억제 활성을 나타내었다. Bcl-2 단백질 정량을 통한 항암 활성 측정 결과, $CH_2Cl_2$ 가용부가 다른 가용부 및 styraxligonlide F 보다 낮은 Bcl-2 발현량을 보였고, p53 발현량 측정에서도 $CH_2Cl_2$ 가용부가 가장 낮은 발현량을 보였다. 인간 폐암세포(A549)를 이용한 자가사멸 측정 실험에서 $CH_2Cl_2$ 가용부는 46.9%로 높은 사멸비율을 나타냈으며, 그다음으로 styraxlignolide F가 43.5%의 사멸비율을 나타내었다. $CH_2Cl_2$ 분획물은 단리물질(styraxlignolide F)보다 항암 활성 효과가 높게 나타났는데 여러 가지 물질이 시너지 효과를 나타낸 것으로 사료된다.

Keywords

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