Attomole microarray detection of MicroRNAs by nanoparticle-amplified SPR imaging measurements of surface polyadenylation reactions

被引:384
作者
Fang, Shiping [1 ]
Lee, Hye Jin [1 ]
Wark, Alastair W. [1 ]
Corn, Robert M. [1 ]
机构
[1] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA
关键词
D O I
10.1021/ja065223p
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Multiple microRNAs (miRNAs) are detected in a microarray format using a novel approach that combines a surface enzyme reaction with nanoparticle-amplified SPR imaging (SPRI). The surface reaction of poly(A) polymerase creates poly(A) tails on miRNAs hybridized onto locked nucleic acid (LNA) microarrays. DNA-modified nanoparticles are then adsorbed onto the poly(A) tails and detected with SPRI. This ultrasensitive nanoparticle-amplified SPRI methodology can be used for miRNA profiling at attomole levels. Copyright © 2006 American Chemical Society.
引用
收藏
页码:14044 / 14046
页数:3
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