Journal of Ginseng Research

The Korean Society of Ginseng (고려인삼학회)
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Effect of Ginsenoside Rb1 on Cell Adhesion, Surface Molecule Expression and Morphological Changes

Ginsenoside Rb1의 세포간 유착, 세포표면 단백질 발현 및 세포형태변화에 미치는 효과

  • Kim, Byung-Hun (School of Bioscience and Biotechnology, Kangwon National University) ;
  • Cho, Jae-Youl (School of Bioscience and Biotechnology, Kangwon National University)
  • 김병훈 (강원대학교 BT학부대학 생명공학부 분자의생명공학) ;
  • 조재열 (강원대학교 BT학부대학 생명공학부 분자의생명공학)
  • Published : 2009.12.31
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Abstract

Cell-cell adhesion managed by various adhesion molecules is known to be one of important phenomena found in numerous immunological responses or diseases such as immunostimulation, rheumatoid arthritis and allergic diseases. In this study, we examined the regulatory role of ginsenosides (G)-Rb1, reported to display immunostimulatory and anticancer effects, on cell adhesion, the up-regulation of surface adhesion molecules and morphological changes using monocytic U937 and macrophage-like RAW264.7 cells. G-Rb1 significantly up-regulated U937 cell-cell adhesion mediated by both CD29 and CD43. It also enhanced U937 cell-fibronectin adhesion, while CD29 blocking antibody P5D2 strongly suppressed it. In agreement, this compound also significantly increased the surface level of CD29 as well as CD43. Furthermore, this compound differentially modulated CD82 up-regulation and morphological changes triggered by lipopolysaccharide (LPS) and phorbol-12-myristate-13-acetate (PMA). Therefore, these results suggest that G-Rb1 may have differential modulatory function on cell adhesion events, surface molecule expression and morphological changes responsible for immune responses.

G-Rb1에 의한 단핵구 세포주인 U937 세포와 대식세포주인 RAW264.7 세포의 유착조절 능, 세포표면 단백질 발현율 및 세포모양 변화능 조절효과를 조사하여 다음과 같은 결론을 얻었다. 1. G-Rb1은 CD29항체 (MEM101A) 및 CD43 항체(161-46) 처리에 의해 유도된 세포-세포간 유착현상을 20%에서 35%까지 유의적으로 상승하였다. 2. G-Rb1은 fibronectin처리에 의해 유도된 U937 세포-fibronectin간 유착현상을 상승시켰다. 3. G-Rb1은 CD29 및 CD43의 세포표면 발현 수준을 유의적으로 증가시켰으나 CD82의 발현은 억제시켰다. 4. G-Rb1은 PMA에 의해 유도된 형태변화는 촉진경향을 반면에 LPS에 의한 변화는 억제경향을 나타내었다. 인삼의 주요사포닌 성분인 G-Rb1의 약리작용이 활발히 연구되고 있다. 특별히, 본 화합물이 갖는 면역증강 및 항암 효능은 인삼이 갖는 이들 효과를 대신하는 것으로 보고 되어져 있다. 그러나, 세포유착과정이 다양한 염증과정, 알러지 반응 및 암세포의 이동과 전이성 등에 관련이 있다는 관점에서 볼 때 본 연구결과는 이들 약물이 갖는 치료기전을 설명하기에는 충분하지 않는 것으로 판단된다. 오히려, 본 결과는 G-Rb1이 특정 농도 ($25-50\;{\mu}M$ 수준)에서 세포의 활성을 촉진할 수 있다는 가능성을 시사한다고 하겠다. 특별히, G-Rb1의 세포유착 촉진 기능에 관한 기전 이해를 위해, 이후, 세포유착 유도 신호전달 단백질의 활성을 포함한 다양한 분자적 수준에서의 추가적인 실험들을 진행하고 한다.

Keywords

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