Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effects of Plum Fruits Extracts at Different Growth Stages on Quinone Reductase Induction and Growth Inhibition on Cancer Cells

생육시기별 피자두 추출물의 암세포 증식 억제 효과 및 Quinone Reductase 유도 활성에 미치는 영향

  • Kim, Hyun-Jeong (The Center for Traditional Microorganism Resources, Keimyung University) ;
  • Yu, Mi-Hee (Dept. of Food Science and Technology, Keimyung University) ;
  • Lee, Syug-Ook (Dept. of Food Science and Technology, Keimyung University) ;
  • Park, Jung-Hyun (The Center for Traditional Microorganism Resources, Keimyung University) ;
  • Park, Dong-Chul (Div. of Food Science, Gimcheon College) ;
  • Lee, In-Seon (The Center for Traditional Microorganism Resources, Keimyung University)
  • 김현정 (계명대학교 전통 미생물자원 개발 및 산업화 연구센터) ;
  • 유미희 (계명대학교 식품가공학과) ;
  • 이승욱 (계명대학교 식품가공학과) ;
  • 박정현 (계명대학교 전통 미생물자원 개발 및 산업화 연구센터) ;
  • 박동철 (김천대학 식품계열) ;
  • 이인선 (계명대학교 전통 미생물자원 개발 및 산업화 연구센터)
  • Published : 2004.11.01
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Abstract

The plum (Prunus salicina L., cv. ‘Soldam’) fruits were harvested at different growth stages, and then extracted using 80% methanol, respectively. The methanol extracts of plum were investigated for their growth inhibition on 6 kinds of human cancer cells using MTT assay and for their activity to induce quinone reductase (QR) in murine Hepa1c1c7 cells. Among various methanol extracts of plum, the plum 1~4 (immature fruit), which thin out 10~25 days before final harvest, showed higher anticarcinogenic activity against 5 kinds of cancer cells than plum 5~9 (intermediate-mature and mature fruit). Especially, plum 1 and 2 were exhibited the strongest growth inhibiting activities to AGS, HepG2 and MDA cancer cells. Also the plum extracts induced the activity of QR, an anticarcinogenic marker enzyme, in Hepa1c1c7 cells while the induction of QR activities by adding plum extracts were shown to be a little difference depending on growth stages. These results suggested that methanol extracts of immature plum can be considered as an effective natural cancer chemoprevention materials.

피자두를 6월 말경에 처음으로 수확하여 5일 간격으로 9차례 채취한 다음, 피자두의 최종 수확 15~40일 전까지의 피자두 1~4의 경우는 미숙과로, 피자두 5, 6은 중간숙과, 최종 수확 0~10일전까지의 피자두 7~9의 경우는 완숙과로 구분하였다. 이들 시료는 각각 메탄올 추출물을 제조하여 6종의 인간유래 암 세포주에 대한 성장 억제 효능을 조사하였다. 피자두 추출물 1~2 ㎎/mL 농도 처리시 피자두 미숙과 1, 2에서 위암세포주인 AGS와 자궁경부암세포인 Hela, 간암세포인 HepG2, 유방암 세포주인 MDA, 혈액암인 U937 세포에 대해서 63~95%정도의 높은 저해율을 보였다. 그리고 시료 농도 4 ㎎/mL 처리시 세포주별 관계없이 피자두 미숙과 및 중간숙과에서 70% 정도의 저해능을 보였다. 특히 피자두 미숙과인 1~4 추출물은 AGS, HepG2, MDA 세포주에 대해서 90% 이상의 가장 높은 저해를 보였다. 한편 수확 시기별에 따른 피자두 추출물의 Hepa1c1c7 세포에 대한 QR 유도능의 측정시 피자두 메탄올 추출물을 세포 독성이 없는 0.2 ㎎/mL 이하 농도로 처리한 결과, 모든 시료에서 1.0 이상의 QR 유도능을 보여 수확시기별에 따른 QR 유도능 차이를 보이지 않았으며, 또한 시료농도가 증가할수록 미숙과에 비해 완숙과에서 더 큰 QR 유도능을 보였다.

Keywords

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