文章基本信息

标题：Biomolecular Interaction Analysis of Gestrinone-anti-Gestrinone Using Arrays of High Aspect Ratio SU-8 Nanopillars
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作者：Francisco J. Ortega ; María-José Bañuls ; Francisco J. Sanza 等
期刊名称：Biosensors
电子版ISSN：2079-6374
出版年度：2012
卷号：2
期号：3
页码：291-304
DOI：10.3390/bios2030291
语种：English
出版社：MDPI Publishing
摘要：In this paper, label-free biosensing for antibody screening by periodic lattices of high-aspect ratio SU-8 nano-pillars (BICELLs) is presented. As a demonstration, the determination of anti-gestrinone antibodies from whole rabbit serum is carried out, and for the first time, the dissociation constant (KD = 6 nM) of antigen-antibody recognition process is calculated using this sensing system. After gestrinone antigen immobilization on the BICELLs, the immunorecognition was performed. The cells were interrogated vertically by using micron spot size Fourier transform visible and IR spectrometry (FT-VIS-IR), and the dip wavenumber shift was monitored. The biosensing assay exhibited good reproducibility and sensitivity (LOD = 0.75 ng/mL).
关键词：micro-nanofabrication; SU-8; optical interrogation; label-free nanobiosensing; gestrinone; immunoassay affinity constant determination