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Hemagglutinative Activity of Lectin Isolated from Shiitake, Lentinula edodes

표고버섯에서 분리한 렉틴의 적혈구 응집활성

  • Kim, Young-Shin (School of Forest Resources, Chungbuk National University) ;
  • Lim, Chi-Hwan (Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Chungnam National University) ;
  • Cho, Nam-Seok (School of Forest Resources, Chungbuk National University)
  • 김영신 (충북대학교 농과대학 임산공학과) ;
  • 임치환 (충남대학교 농업생명과학대학 농화학과) ;
  • 조남석 (충북대학교 농과대학 임산공학과)
  • Published : 2002.04.30

Abstract

Since lectin condense more easily cancer cell than normal cell, it has been investigated very actively. Recently, a lot of researchers gave attention to lectin in natural products especially because lectin has effects on T-cell activation and anticancer activity, and specificity on polysaccharide. The specificity is useful to confirm kind of polysaccharide of the cell surface and to study the polysaccharide. In this research, we purified lectin from shiitake, Lentinula edodes, and then characterized it. The molecular weight of the lectin was 23 kDa, and it was stable only under the $40^{\circ}C$ and in a alkaline solution. As for the specificity of polysaccharide, the lectin had specificity on galactose, fucose, glucose, lactose and N-acetyl-D-galactosamine. In addition, it was confirmed to be a glycoprotein.

렉틴은 T-cell 자극 분열효과 및 항종양효과 이외에도 당특이성에 의한 세포표면이나 용액내에 존재하는 당류의 확인 및 연구에 유용하게 쓰이고 있어 최근들어 특히 흥미의 대상이 되고 있다. 렉틴은 주로 식물을 대상으로 연구되어져 왔으며, 이러한 연구결과, 렉틴은 단백질성 물질이라는 공통점을 제외하고는 생화학적, 면역학적 성질이 매우 다양한 것으로 나타났다. 본 연구에서는 표고버섯을 부위별로 구분하여 그 화학적 조성분석과 단백질 분리를 실시하고, 렉틴을 정제하여 생리활성의 특성을 구명하였다. 표고버섯은 신선한 것일수록 단백질 추출이 용이하며, 균산이 균병에 비해 단백질 량이 2배 정도 많았다. 렉틴은 $40^{\circ}C$ 이하에서 그리고 산성보다는 알칼리성에 더 안정하였다. 당 특이성에 있어서는 galactose, fucose, glucosamine, lactose, N-aretyl-D-galactosamine에 특이성을 지니는 것으로 나타났으며, 분리한 렉틴은 당단백질임을 알 수 있었다.

Keywords

References

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