Zhang, Y, Zhou, D and He, J (2014) MicroRNA sensor based on magnetic beads and enzymatic probes. International Journal of Nanoscience, 13 (5/6). 1460014. ISSN 1793-5350
Abstract
MicroRNAs are associated with multiple cellular processes and diseases. Here, we designed a highly sensitive, magnetically retrievable biosensor using magnetic beads (MBs) as a model RNA sensor. The assay utilized two biotinylated probes, which were hybridized to the complementary target miRNA in a sandwich assay format. One of the biotinylated ends of the hybridization complex was immobilized onto the surface of a NeutrAvidin (NAV) coated MB and the other biotinylated end was conjugated to HRP via NAV-biotin interaction. The results were presented by colorimetric absorbance of the resorufin product from amplex red oxidation. We show that by combining the use of MBs as well as bio-specific immobilization, the sensitivity of miRNA detection is down to 100 pM. This model HRP-MBs system can be used for simple, rapid colorimetric quantification of low level DNA/RNA or other small molecules.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | MicroRNA; biosensor; magnetic beads; enzymatic sensor |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Feb 2015 10:38 |
Last Modified: | 30 Jun 2020 14:49 |
Published Version: | http://dx.doi.org/10.1142/S0219581X1460014X |
Status: | Published |
Publisher: | World Scientific Publishing Company |
Identification Number: | 10.1142/S0219581X1460014X |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83349 |