Direct kinetic assay of interactions between small peptides and immobilized antibodies using a surface plasmon resonance biosensor

被引:33
作者
Gomes, P
Andreu, D
机构
[1] Univ Barcelona, Dept Organ Chem, E-08028 Barcelona, Spain
[2] Ctr Invest Quim, P-4169007 Oporto, Portugal
关键词
antigen-antibody interactions; real-time biospecific interaction analysis kinetics; surface plasmon resonance analysis of small; analytes;
D O I
10.1016/S0022-1759(01)00503-8
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A surface plasmon resonance (SPR) protocol is described for the direct kinetic analysis of small antigenic peptides interacting with immobilized monoclonal antibodies (mAb). High peptide concentrations (up to 2.5 muM) and medium mAb surface densities (about 1.5 ng/mm(2)) are needed to ensure measurable binding levels, and fast buffer flow rates (60 mul/min) are required to minimize diffusion-controlled kinetics. Good reproducibility levels in the kinetic constants are obtained under these analysis conditions (standard deviations below 10% of the mean values). Application of this protocol to determine the antigenic ranking of viral peptides shows an excellent agreement between SPR and previous competition enzyme-link-ed immunosorbent assays (ELISA) on the same peptide/antibody systems. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
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页码:217 / 230
页数:14
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