생명과학회지 (Journal of Life Science)

  • 제20권12호
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  • Pages.1784-1791
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  • 2010
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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AGS 인체 위암세포에서 톳 에탄올 추출물에 의한 침윤성 저해

Inhibition of Cell Invasion by Ethyl Alcohol Extracts of Hizikia fusiforme in AGS Human Gastric Adenocarcinoma Cells

  • 최영현 (동의대학교 한의과대학 생화학교실, 한의학연구소, 블루바이오 소재개발센터 및 대학원 바이오물질제어학과)
  • Choi, Yung-Hyun (Department of Biochemistry, College of Oriental Medicine, Research Institute of Oriental Medicine, Blue-Bio Industry Regional Innovation Center and Department of Biomaterial Control (BK21 program), Graduate School, Dongeui University)
  • 투고 : 2010.10.27
  • 심사 : 2010.11.02
  • 발행 : 2010.12.30
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초록

본 연구에서는 AGS 인체 위암세포에서 톳 에탄올 추출물(EHF)의 항침윤성과 tight junctions (TJs)의 tightening과의 관계를 조사하였다. EHF에 의한 AGS 위암세포의 증식억제와 연관된 세포이동성 및 침윤성의 감소는 transepithelial electrical resistance의 증가와 연계된 Js의 tightness 증가와 연관성이 있었다. EHF는 matrix metalloprotease (MMP)-2 및 -9의 활성을 억제하였으며, 이는 MMPs의 mRNA 및 단백질 발현 감소에 의한 것이었으나 tissue inhibitor of metalloproteinase (TIMP)-1 및 -2의 mRNA 발현은 증가시켰다. 또한 EHF는 TJs의 주요 조절인자인 claudin family 단백질들(claudin-1, -3 및 -4)의 발현을 감소시켰으며, insulin like growth factor-1 receptor 단백질은 감소된 반면 thrombospondin-1 및 E-cadherin의 발현은 증가되었다. 본 연구의 결과는 톳 추출물이 암의 전이를 효과적으로 억제하는 효능이 있음을 보여주는 결과이다.

In this study, we investigated the effects of ethyl alcohol extracts of Hizikia fusiforme (EHF) on the correlation between tightening of tight junctions (TJs) and anti-invasive activity in human gastric adenocarcinoma AGS cells. Inhibitory effects of EHF on cell proliferation, motility, and invasiveness were found to be associated with increased tightness of the TJs, which was demonstrated by an increase in transepithelial electrical resistance. Activities of matrix metalloprotease (MMP)-2 and -9 in AGS cells were dose-dependently inhibited by treatment with EHF, and this was also correlated with a decrease in expression of their mRNA and proteins; however, tissue inhibitor of metalloproteinase (TIMP)-1 and -2 mRNA levels were increased. Additionally, immunoblotting results indicated that EHF repressed the levels of claudin proteins (claudin-1, -3, and -4), major components of TJs that play key roles in control and selectivity of paracellular transport. Furthermore, EHF decreased expression of insulin such as growth factor-1 receptor proteins, while concurrently increasing that of thrombospondin-1 and E-cadherin. In conclusion, these results suggest that EHF treatment may inhibit tumor cell motility and invasion, and therefore act as a dietary source to decrease the risk of cancer metastasis.

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