Issue 10, 2015

DNA/RNA chimera templates improve the emission intensity and target the accessibility of silver nanocluster-based sensors for human microRNA detection

Abstract

In recent years microRNAs (miRNAs) have been established as important biomarkers in a variety of diseases including cancer, diabetes, cardiovascular disease, aging, Alzheimer's disease, asthma, autoimmune disease and liver diseases. As a consequence, a variety of monitoring methods for miRNAs have been developed, including a fast and simple method for miRNA detection by exploitation of the unique photoluminescence of DNA-templated silver nanoclusters (DNA/AgNCs). To increase the versatility of the AgNC-based method, we have adopted DNA/RNA chimera templates for AgNC-based probes, allowing response from several human miRNAs which are hardly detectable with DNA-based probes. Here, we demonstrate in detail the power of DNA/RNA chimera/AgNC probes in detecting two human miRNAs, let-7a and miR-200c. The DNA/RNA chimera-based probes are highly efficient to determine the level of miRNAs in several human cell lines.

Graphical abstract: DNA/RNA chimera templates improve the emission intensity and target the accessibility of silver nanocluster-based sensors for human microRNA detection

Supplementary files

Article information

Article type
Paper
Submitted
15 jan 2015
Accepted
25 feb 2015
First published
25 feb 2015
This article is Open Access
Creative Commons BY license

Analyst, 2015,140, 3422-3430

Author version available

DNA/RNA chimera templates improve the emission intensity and target the accessibility of silver nanocluster-based sensors for human microRNA detection

P. Shah, S. W. Choi, H. Kim, S. K. Cho, P. W. Thulstrup, M. J. Bjerrum, Y. Bhang, J. C. Ahn and S. W. Yang, Analyst, 2015, 140, 3422 DOI: 10.1039/C5AN00093A

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