期刊
BIOSENSORS & BIOELECTRONICS
卷 26, 期 8, 页码 3683-3687出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2011.01.045
关键词
ZnO nanorods; Biomarker detection; Fluorescence enhancement; Antibody microarray
类别
资金
- A*STAR
- Center for Advanced Bionanosystems, Nanyang Technological University
Current high-throughput antibody microarrays greatly rely on enzymatic reactions- or nanostructured tags-based reporter-amplifications for required sensitivity, but they need tedious operation, additional expensive reagents and microwells or microchannels to eliminate crossover interferences, thus resulting in low array density and high expense. A unique ZnO nanorods-grown substrate is developed here to not only immobilize a large amount of probe molecules, but also directly amplify the microarray fluorescent signals in detection of two important cancer biomarkers, carcinoembryonic antigen (CEA) and a-fetoprotein (AFP), achieving a detection limit of 1 pg mL(-1) in human serum, which is comparative to or lower than that of ELISA. This advanced ZnO nanorods-based substrate can be mass-manufactured, which offers great potential to fabricate economical and sensitive protein arrays for broad applications in clinic diagnosis, therapeutic monitoring and drug discovery. (C) 2011 Elsevier B.V. All rights reserved.
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