생명과학회지 (Journal of Life Science)

  • 제20권9호
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  • Pages.1420-1425
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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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Mannose-binding lectin의 선천성 면역과 질병에 대한 역할

Roles of Mannose-Binding Lectin on Innate Immunity and Disease

  • 장호정 (동의대학교 생명응용학과) ;
  • 박정혜 (동의대학교 임상병리학과) ;
  • 정경태 (동의대학교 임상병리학과)
  • Jang, Ho-Jung (Department of Life Science and Biotechnology, Dong-Eui University) ;
  • Park, Jeong-Hae (Department of Clinical Laboratory Science, Dong-Eui University) ;
  • Chung, Kyung-Tae (Department of Clinical Laboratory Science, Dong-Eui University)
  • 투고 : 2010.09.15
  • 심사 : 2010.09.27
  • 발행 : 2010.09.30
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초록

선천성 면역이란 감염성 질환에 대응하는 분자들의 네트워크가 반응하는 숙주의 첫 번째 방어 메카니즘이다. 간에서 만들어져 혈액에 존재하는 Mannose-binding lectin (MBL)은 선천성 면역에 관여하는 단백질군인 collectin에 속하는 분자로서 감염성 질병을 유발하는 다양한 세균, 바이러스, 효모, 곰팡이 및 원생동물의 표면에 존재하는 특징적인 당쇄를 인식한다. 이런 감염성 인자들의 표면에 드러난 당쇄의 공통적인 패턴을 MBL이 인식하여 자기(self)와 비자기(non-self)를 구분하기 때문에 MBL을 패턴 인식 분자(pattern recognition molecule)라고 한다. MBL은 MBL2 유전자에 의해 만들어지며, MBL2 유전형은 여러 가지 다형성(polymorphisms)이 있는 것으로 나타났다. MBL2 유전자의 변이는 상당히 많은 사람에서 나타나며, MBL 결여의 원인이다. MBL 결여는 감염성 질환에 대한 감수성을 증가시키므로, MBL의 유전적 변이와 임상적 중요성에 대해 많은 연구가 진행 되어져 왔다. 이 총설은 현재 우리가 알고 있는 MBL의 구조와 기능에 대해 전반적으로 논의하고자 한다.

Innate immunity is the first line of host defense consisting of various molecules against infectious challenges. Mannose-binding lectin (MBL) belongs to the collectin protein family which takes part of innate immunity and is able to recognize specific carbohydrates on the surface of a variety of infectious agents acting as a pattern recognition molecule. In this way, MBL differentiates self from non-self and interacts with other molecules of the immune system. MBL genotype shows various MBL2 polymorphisms which are responsible for MBL deficiency in a substantial portion of the entire human population and for susceptibility to infectious disease. Therefore, it has been highlighted in the relationship between genetic variants and clinical significance. Here we focus on presenting anoverview of our understanding of MBL structure and functions.

키워드

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