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Title: A polymer surface for antibody detection by using surface plasmon resonance via immobilized antigen
Authors: Chokchai Puttharugsa
Thidarat Wangkam
Nongluck Houngkamhang
Sirisa Yodmongkol
Oraprapai Gajanandana
Orawan Himananto
Boonsong Sutapun
Ratthasart Amarit
Armote Somboonkaew
Toemsak Srikhirin
Mahidol University
Thailand National Center for Genetic Engineering and Biotechnology
Suranaree University of Technology
Thailand National Electronics and Computer Technology Center
Keywords: Materials Science;Physics and Astronomy
Issue Date: 1-Aug-2013
Citation: Current Applied Physics. Vol.13, No.6 (2013), 1008-1013
Abstract: A polymer substrate based surface plasmon resonance (SPR) technique was developed for detection of specific monoclonal antibody 10B2 (MAb 10B2) against bacterium Acidovorax avenae subsp. citrulli (Aac). The monolayer of Aac antigen was physically immobilized on 95:5 polystryrene-copoly acrylic acid (95PSMA) for detection of antibody. The amount of antigen-antibody binding was found to depend on the surface density of immobilized Aac on the sensor surface and the antibody concentration. The detection limit was 5 μg/ml which was lower than the required concentration during the normal production of the antibody at 10-100 μg/ml. This suggests a possible use of surface for the antibody screening. Moreover, an application in antibody screening was explored by combination of surface plasmon resonance imaging (SPR imaging) and antibody detection assay on the 95PSMA surface. Two antigens of bovine serum albumin (BSA) and Aac were used as a model system for antibody screening. The result shows that both antibodies can be distinguished using the immobilized antigens on the 95PSMA surface based SPR imaging technique. © 2013 Elsevier B.V. All rights reserved.
ISSN: 15671739
Appears in Collections:Scopus 2011-2015

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