Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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The Effects on Antimicrobial and Cytotoxicity of Solanum Iyratum Fractions

배풍등 분획물의 항균 및 암세포 증식 억제효과

  • Shin Mi-Ok (Dept. of Food and Nutrition, Silla University)
  • 신미옥 (신라대학교 식품영양학과)
  • Published : 2005.12.01
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Abstract

In this study, we investigated antimicrobial and cytotoxicity effects to each fraction extracted from Solanum lyratum (SL), which were extracted methanol (SLM) and then the extract was fractionated into five different types : hexane (SLMH), ethyl ether (SLMEE), ethylacetate (SLMEA), butanol (SLMB) and aqueous (SLMA). The antimicrobial activity was analyzed by the paper disc method. Among the various solvent fractions, SLMEA showed the strongest antimicrobial activies. The cytotoxicity of SL fractions on HeLa, MCF-7, HT-29 and HepG2 cells was evaluated by MTT assay. Among various partition layers, SLMEE showed the strongest cytotoxic effects to all cancer cell lines. We also observed that quinone reductase (QR) was induced by all fraction layers of SL to HepG2 cells. Since the QR-induced effects of SLMEE on HepG2 cells at $160{\mu}g/ml$ concentration showed 2.1 when compared with a control value of 1.0, inducer of QR for cancer protection may be contained in this fraction.

민간에서 만성간염, 수종, 옹종, 습진, 류마치스성 관절통, 소변분리, 말라리아, 황달을 치료하는데 사용하며, 해열 진통제로 약용하고 있는 배풍등을 metanol (SLM)로 먼저 추출하고 이를 hexane (SLMH), ethylether (SLMEE), ethylacetate(SLMEh), butanol (SLMB) 및 수층 (SLMA) 등 다섯가지의 각 용매별로 분획하여 배풍등의 항균 및 항발암 효과를 연구하였다. 먼저 paper disc method를 이용하여 배풍등의 항균효과를 알아보았다. P. mirabilis, S. aureus, S. marcescens 및 B. substilis의 4가지 사용균주에 배풍등의 각 분획물을 처리한 결과, 모든 균주에서 SLMEA층에서 가장 높은 항균 활성 효과를 나타내었고, 그 다음으로는 SLMEE에서 항균 활성 효과를 나타내었다. 배풍등의 암세포 증식억제 효과(cytotoxicity)를 MTT assay로 실험한 결과, 4종의 암세포주 HeLa, MCF-7, HT-29 및 HepG2 모두 배풍등의 ethylether 분획층인 SLMEE총에서 가장 높은 암세포 증식억제 효과를 보였으며, 암예방 QR유도 활성을 HepG2 세포주를 이용하여 실험한 결과에서도, 다른 분획층에 비해 비극성 용매층인 SLMEE층에서 유의적으로 QR유도 활성을 증가시키는 것으로 나타났다. 이상의 실험 결과를 미루어 볼 때, 극성과 비극성을 둘 다 가지는 SLMEA층에서의 항균활성 물질과 비극성 용매층인 SLMEE 층에서의 암 예방 물질의 단계적인 분리 동정을 통한 생리활성 물질의 개발이 기대되어진다.

Keywords

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