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학술발표회초록보기

초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

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  • 03월 02일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제109회 대한화학회 학술발표회, 총회 및 기기전시회 안내 FACS based Imuunoassay for multiple analytes by using E.coli with autodisplayed Z-domains

등록일
2012년 2월 16일 15시 33분 39초
접수번호
1059
발표코드
BIO.P-682 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 25일 (수요일) 18:00~21:00
발표형식
포스터
발표분야
생명화학
저자 및
공동저자
박민, 변재철1
연세대학교 신소재공학과, Korea
1연세대학교 신소재공학부, Korea
Microsphere-based flow cytometric assay is commonly used immune assay for the analysis of mixed analytes in solution. It is based on antibodies conjugated fluorescence micro beads and uses the flow cytometer for detection. In this study, we developed a new flow cytometric assay by using fluorescence and autodisplaying proteins co-expressing E.coli. The autodisplay technology is one of the surface display methods for proteins or peptides at the E.coli outer membrane. In the autodisplay technology, proteins are expressed as recombinant proteins in a poly protein precursor for the autotransporter secretion pathway and automatically aligned on the outer membrane surface. These aligned proteins can be used a affinity layer for capturing the analyte. The autotranspoter vector and fluorescence protein expressing vector were transfected into the UT5600(DE3) E.coli. For the fluorescence proteins, eGFP and tdTomato were used and Z-domains were autodisplayed on the surface of E.coli. APC conjugated antibodies were treated to measure the activity of autodisplayed Z-domains and the activity Z-domain and expressed fluorescence proteins was measured by using a fluorescnece photometer and a flow cytometer. the result of fluorescence photometer shows that intracellular expressed eGFP and tdTomato have a excitation/emission wavelength of 488/507 and 554/581 nm. The flow cytometer result shows a clear increasement of fluorescence intensity after APC conjugated antibodies treatment.

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