Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Effect of Korean Mistletoe Extract M11C (Non-lectin Components) on the $TNF-\alpha$ Expression and Secretion from Human Peripheral Blood Monocytes

한국산 겨우살이 추출물 M11C (렉틴 구성물질)가 단구세포의 $TNF-\alpha$ 유전자 발현유도 및 분비에 미치는 효과

  • Jun, Myung-Ha (Department of Immunology, College of Medicine, Konkuk University) ;
  • Kang, Tae-Bong (The Institute for Biomedical Research, Handong University) ;
  • Chang, Sung-Ho (Department of Immunology, College of Medicine, Konkuk University) ;
  • Choi, Wahn-Soo (Department of Immunology, College of Medicine, Konkuk University) ;
  • Seong, Nak-Sul (National Crop Experiment Station, RDA) ;
  • Her, Erk (Department of Immunology, College of Medicine, Konkuk University)
  • 전명하 (건국대학교 의과대학 면역학교실) ;
  • 강태봉 (한동대학교 생의학 연구소) ;
  • 장성호 (건국대학교 의과대학 면역학교실) ;
  • 최완수 (건국대학교 의과대학 면역학교실) ;
  • 성낙술 (농촌진흥청 작물시험장 특용작물과) ;
  • 허억 (건국대학교 의과대학 면역학교실)
  • Published : 2007.02.28
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Abstract

It is well-known that Korean mistletoe (Viscum album) extract has an immune activity and anticancer effect. In this study, Korean mistletoe extract, M11C (non-lectin components), was used to examine whether this extract might activate human peripheral monocyte to produce tumor necrosis $factor-\alpha$ $(TNF-\alpha)$. To examine the effect of M11C on the production of $TNF-\alpha$ from monocyte, the monocyte were stimulated by the M11C, and then collected the supernatant (M11C stimulated monocyte-conditioned media; MCM). MCM was treated to the $TNF-\alpha$ sensitive L929 cells, and then L929 cytotoxicity was measured by means of MTT. MCM had cytotoxic effect on L929. And the cytotoxic effect of MCM on L929 was almost abolished by $anti-TNF-\alpha$ antibody. These data indicated that MCM contained $TNF-\alpha$, suggesting the $TNF-\alpha$ generation from M11C-stimulated monocyte. This suggestion was confirmed from the data that $TNF-\alpha$ was highly detected in MCM by immunoblotting technique. M11C effect on $TNF-\alpha$ production from monocyte was in the dose and stimulating time dependent manners. Also the effect of M11C on the expression of $TNF-\alpha$ mRNA from monocyte was shown in the dose and stimulating time dependent manners. As a result, Korean mistletoe extract, M11C, could be used for an immunostimulator.

한국산 겨우살이 (Viscum album)는 면역 활성효과와 항암효과가 있다는 것으로 잘 알려져 있다. 본 연구에서는 한국산 겨우살이 추출물 M11C (비렉틴 구성물질)가 사람의 말초혈액 단구를 활성화시켜 tumor necrosis factor-alpha $(TNF-\alpha)$를 생산 분비하게 하는지를 규명하기 위해 실험에 이용되었다. 단구로부터 $TNF-\alpha$의 생산에 있어 M11C의 효과를 알기 위해 단구를 여러 농도 $(0-2000{\mu}g/m\ell)$의 M11C로 0.5-24시간 동안 자극한 후 배양액 MCM을 수거했다. 수거한 배양액 MCM을 $TNF-\alpha$에 민감한 L929 세포에 첨가한 후 L929 세포의 독성 정도를 MTT 기법으로 검사하였는데, 배양액 MCM이 L929 독성효과를 가졌으며, 이 MCM의 L929 세포 독성효과는 $TNF-\alpha$ 항체에 의해 거의 완전하게 억제되었다. 이러한 결과는 배양액 MCM에 $TNF-\alpha$가 존재함을 지적했으며, 또한 M11C가 단구를 자극해 $TNF-\alpha$를 생산하리라고 암시했었다. 이러한 암시를 확인하기 위해 immunoblotting 기법을 사용해 배양액 MCM에 존재하는 $TNF-\alpha$을 검사를 수행했다. 검사결과 배양액 MCM에 많은 량의 $TNF-\alpha$가 검출되었다. 이러한 $TNF-\alpha$ 검출량은 단구를 자극한 M11C의 농도와 자극시간에 비례해서 증가했다. 즉, 단구로부터 $TNF-\alpha$의 생산 분비량은 M11C의 농도와 자극시간에 의존적이었다. 이러한 M11C의 농도와 자극시간의 의존적 효과는 단구로부터 $TNF-\alpha$ mRNA 발현에도 같은 경향을 보였다. 결론적으로 한국산 겨우살이로부터 열탕 추출한 M11C가 면역활성제로 작용할 수 있음을 시사함과 동시에 한방탕제로 사용되는 한국산 겨우살이가 면역학적 효능을 가지고 있음을 말해주고 있다.

Keywords

References

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