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호박잎 추출물의 in vitro 항산화 및 항암 효과

Antioxidant and Anti-cancer Activities of Squash (Cucurbita moschata Duch.) Leaf Extract In vitro

  • 곽영은 (충북대학교 식품영양학과) ;
  • 주지형 (충북대학교 식품영양학과)
  • Kwak, Youngeun (Department of Food and Nutrition, Chungbuk National University) ;
  • Ju, Jihyeung (Department of Food and Nutrition, Chungbuk National University)
  • 투고 : 2013.05.23
  • 심사 : 2013.09.05
  • 발행 : 2013.12.31

초록

본 연구에서는 호박잎 추출물의 총 폴리페놀 함량, 총 플라보노이드 함량, radical 소거활성 등과 같은 항산화성과, 암세포 증식억제 활성, 사멸유도 활성, 부착억제 활성 등과 같은 항암성을 in vitro 수준에서 검증하였다. 호박잎의 총 폴리페놀 함량은 263.4 mg gallic acid equivalent/100 g, 총 플라보노이드 함량은 73.6 mg quercetin equivalent/100 g으로 측정되었다. 호박잎 추출물은 300 ${\mu}g/mL$ 농도에서 69.4%의 ABTS radical 소거 활성이 있었는데, 이는 호박잎 추출물과 같은 농도에서의 L-ascorbic acid 활성(94.5%)의 73.4%에 해당되는 수준이었다. 한편 호박잎 추출물은 37.5, 75, 150 ${\mu}g/mL$ 농도에서 HCT116 대장암 세포와 H1299 폐암 세포의 증식을 60.6-87.9% 억제하는 농도 의존적 활성이 있었으며 이는 부분적으로 apoptosis를 유도하기 때문인 것으로 생각된다. 또한 호박잎 추출물은 150 ${\mu}g/mL$ 농도에서 HCT116 세포와 H1299 세포의 부착을 16.8-28.4% 억제하는 활성이 있었다. 이상의 결과를 통하여 호박잎 추출물은 in vitro 수준에서 항산화성 및 항암성을 가지는 것으로 생각되며, 이러한 연구 결과는 향후 관련 작용기전을 규명하기 위한 기초 자료로 이용될 수 있을 것으로 기대된다.

The aim of this study was to investigate the antioxidant and anti-cancer activities of squash leaf extract (SLE) in vitro. The total polyphenol and flavonoid levels of SLE were 263.4 mg gallic acid equivalent/100 g and 73.6 mg quercetin equivalent/100 g, respectively. The radical-scavenging activity of SLE at the concentration of 300 ${\mu}g/mL$ was 69.4%. SLE significantly inhibited human cancer cell growth (by 60.6-87.9% in HCT116 colon cancer cells and by 73.4-86.4% in H1299 lung cancer cells at the concentrations of 37.5, 75, and 150 ${\mu}g/mL$) and attachment (by 28.4% in HCT116 and by 16.8% in H1299 at the concentration of 150 ${\mu}g/mL$). SLE also altered nucleus morphology and increased nuclear staining intensity (by 42.8-58.2% in HCT116 and by 25.5-32.9% in H1299 at the concentrations of 37.5 and 75 ${\mu}g/mL$), indicating its apoptosis-inducing activity. These results demonstrate the antioxidant and anti-cancer activities of SLE in vitro.

키워드

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