Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Nanobiocatalyst-Linked Immunosorbent Assay(NBC-LISA)

나노바이오촉매 기반 효소결합면역흡착검사

  • Lee, Inseon (Department of Chemical and Biological Engineering, Korea University) ;
  • Hwang, Sang Youn (Department of Chemical and Biological Engineering, Korea University) ;
  • Kim, Jungbae (Department of Chemical and Biological Engineering, Korea University)
  • 이인선 (고려대학교 화공생명공학과) ;
  • 황상연 (고려대학교 화공생명공학과) ;
  • 김중배 (고려대학교 화공생명공학과)
  • Published : 2011.08.01
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Abstract

Enzymes are being used in various fields due to their unique property of substrate specificity. Enzyme-linked immunosorbent assay(ELISA) has enabled the detection of various antigens by reporting the binding event of antigen and antibody via enzyme-catalyzed reaction. However, the sensitivity improvement of conventional ELISA has been limited because only one enzyme molecule is conjugated to one molecule of antibody. To overcome this limitation and further improve the sensitivity of ELISA, there have been efforts to increase the number ratio of enzymes to antibody. Recently, the nanobiocatalytic approaches, with their successful enzyme stabilization, improved the performance stability as well as sensitivity in a modified protocol of ELISA. The present paper introduces the basic principle of ELISA, and the recent efforts to improve sensitivity and performance stability of ELISA by using the nanobiocatalytic approaches.

생촉매인 효소의 기질선택성은 다양한 분야에서 유용하게 이용되고 있다. 그 중에서도 효소결합면역흡착검사(enzyme-linked immunosorbent assay, ELISA)는 항원항체의 결합을 항체와 공유결합된 효소의 반응으로 나타냄으로써 다양한 항원들의 진단을 가능케 했다. 하지만 기존의 효소결합면역흡착검사는 하나의 항체당 하나의 효소가 결합된 형태이기 때문에 감도(sensitivity)의 증가 폭에 그 한계가 있으며, 이를 극복하기 위한 방안으로 하나의 항체당 결합된 효소의 수를 증가시킴으로써 혁신적인 감도의 향상을 가져오는 연구가 진행되었다. 최근 나노바이오촉매(nanobiocatalyst, NBC) 접근방식을 이용한 효소활성의 안정화는 효소결합면역흡착검사의 감도 향상뿐만 아니라 그 성능의 안정성을 확보할 수 있는 연구결과로 이어지고 있다. 본 총설에서는 일반적인 효소결합면역흡착검사의 기본적인 원리와 감도향상을 위한 연구, 그리고 성능안정성(performance stability)을 향상시키기 위한 나노바이오촉매-결합면역흡착검사(Nanobiocatalyst-Linked Immunosorbent Assay, NBC-LISA)에 대하여 살펴보고자 한다.

Keywords

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