NDLI: Design and Fabrication a Gold Nanoparticle-DNA Based Nanobiosensor for Detection of microRNA Involved in Alzheimer's Disease

Content Provider	Springer Nature Link
Author	Delkhahi, Shokoufeh Rahaie, Mahdi Rahimi, Fereshteh
Copyright Year	2016
Abstract	MicroRNAs are small RNAs which regulate gene expression by translational repression or degradation of messenger RNAs. Regards to important role of these biomolecules in human disease progress, to produce sensitive, simple and cost-effective assays for microRNAs are in urgent demand. miR-137 in Alzheimer’s patients has demonstrated its potential as non-invasive biomarkers in blood for Alzheimer’s disease diagnosis and prognosis. This paper describes a novel, sensitive and specific microRNA assay based on Colorimetric detection of gold nanoparticles and hybridization chain reaction amplification (HCR). The new strategy eliminates the need for enzymatic reactions, chemical changes, separation processes and sophisticated equipment. The detection process is visible with the naked eyes and detection limit for this method is 0.25nM which is less than or at least comparable with the previous methods based on colorimetric of AuNPs. The important features of this method are high sensitivity and specificity to differentiate between perfectly matched, mismatched and non-complementary target microRNAs and also decent response in the real sample analysis with blood plasma. In conclusion, the simple and fast nanobiosensor can clinically be used for the early detection of Alzheimer’s disease by direct detection of the plasma miR-137 in real clinical samples, without a need for sample preparation, RNA extraction and/or amplification.
Starting Page	603
Ending Page	610
Page Count	8
File Format	PDF
ISSN	10530509
Journal	Journal of Fluorescence
Volume Number	27
Issue Number	2
e-ISSN	15734994
Language	English
Publisher	Springer US
Publisher Date	2016-12-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Alzheimer’s disease microRNAs Nanobiosensor Gold nanoparticles Hybridization Chain Reaction Colorimetric Biomedicine Biological and Medical Physics, Biophysics Biotechnology Biochemistry Analytical Chemistry
Content Type	Text
Resource Type	Article
Subject	Sociology and Political Science Spectroscopy Law Biochemistry Clinical Biochemistry Clinical Psychology

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