期刊
ANALYTICAL CHEMISTRY
卷 72, 期 22, 页码 5618-5624出版社
AMER CHEMICAL SOC
DOI: 10.1021/ac0008284
关键词
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资金
- NIGMS NIH HHS [GM 48142] Funding Source: Medline
A high-density fiber-optic DNA microarray sensor was developed to monitor multiple DNA sequences in parallel. Microarrays were prepared by randomly distributing DNA probe-functionalized 3.1-mum-diameter microspheres in an array of wells etched in a 500-mum-diameter optical imaging fiber. Registration of the microspheres was performed using an optical encoding scheme and a custom-built imaging system. Hybridization was visualized using fluorescent-labeled DNA targets with a detection limit of 10 fM. Hybridization times of seconds are required for nanomolar target concentrations, and analysis is performed in minutes.
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