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Enhancement of Anticarcinogenic Effect by Combination of Lycii fructus with Vitamin C

구기자 추출성분의 항발암 효과 및 비타민 C첨가에 의한 상승효과

  • 박윤자 (신라대학교 식품영양학과) ;
  • 김미향 (신라대학교 식품영양학과) ;
  • 배송자 (신라대학교 식품영양학과)
  • Published : 2002.02.01

Abstract

We investigated the cytotoxicity effects of Lycii fructus (LF) on HePG2, MCF7 and C6 cell lines by the MTT assay. We extracted the methanol (LFM) and fractionated to five partition layers. Among partition layers, the ethylether partition layer (LFMEE) was showed the strongest cytotoxic effects on all cancer cell lines. The hexane partition layer (LFMH) also was showed significant cytotoxic activities on Hela and MCF-7 cell lines. We also determined the induction of intracellular quinone reductase (QR) activity on HepG2 cells. Among various partition layers of Lycii fructus; LFMH was showed the most effective such induced effect such as 1.85 to the control value of 1.0. And we also determined the enhancement of anticarcinogenic effect by combination of Lycii fructus with vitamin C on all cell lines. These results suggest that potentially useful anticarcinegenic chemicals could be isolated from LFMEE and LFMH of the Lycii frutus and also we found the enhanced effect by the combination of various partition layers of LFM with vitamin C.

예부터 약용 또는 식용으로 쓰였으며, 사람의 체질을 강하게 하고, 혈관연화, 콜레스테롤 저하작용 등에 효과가 있는 것으로 알려져 있는 구기자를 추출, 분획하여 4종의 암세포 주(HepG2, HeLa, MCF-7, C6)를 이용하여 암세포 증식억제 실험을 한 결과, 4종의 암세포주 모두에게 구기자의 ethyl-ether층(LFMEE)이 아주 높은 암세포 증식억제 효과가 나타났으며, 특히 유방암세포주인 MCF-7에서도 hexane층 (LFMH)에서 아주 높은 암세포 증식억제 효과가 나타났다. 한편, 인체 간암세포인 HePG2를 이용하여 quinone reductase 효소 유도 활성 여부를 측정한 결과 분획물 첨가농도 100 $\mu\textrm{g}$/mL에서 1.85배의 높은 효과가 나타났다. 구기자에 미치는 비타민 C의 암세포 성장억제 상승효과를 실험한 결과, 구기자와 비타민 C를 각각 혼합 처리시 낮은 농도에서도 아주 높은 암세포 증식억제 효과가 나타났다. 즉, HeLa와 MCF-7 암세포주에서도 정도의 차이는 있었으나, 구기자 성분과 비타민 C의 조합에 의해 암세포 증식이 억제 또는 사멸되는 나타났으며 본 연구에서 사용한 2종류의 암세포주 모두 구기자와 비타민 C 혼합물의 투여로 인해 증식억제가 현저히 상승됨을 보여주었다. 본 실험을 통해, 구기자의 hexane층(LFMH)과 ethylether층(LFMEE)에서 높은 암세포 증식억제 효과와 암예방 효과가 있는 것으로 추정되며, 비타민 C와 함께 첨가했을 때 낮은 농도의 첨가 시료에서도 높은 암세포 증식억제 상승효과가 나타났음을 알 수 있었다. 구기자의 항암 효과를 상승시키기 위해서는 비타민 C 일정량을 함께 첨가하는 것이 효과적임을 본 실험 결과를 통해 알 수 있었다.

Keywords

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