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Title: Rolling circle amplification and graphene-based sensor-on-a-chip for sensitive detection of serum circulating miRNAs
Authors: Kiatnida Treerattrakoon
Thanakorn Jiemsakul
Chookiat Tansarawiput
Preedee Pinpradup
Tawin Iempridee
Patraporn Luksirikul
Krissana Khoothiam
Tararaj Dharakul
Deanpen Japrung
University of Phayao
Kasetsart University
Faculty of Medicine, Siriraj Hospital, Mahidol University
Thailand National Science and Technology Development Agency
Keywords: Biochemistry, Genetics and Molecular Biology
Issue Date: 15-Jul-2019
Citation: Analytical Biochemistry. Vol.577, (2019), 89-97
Abstract: © 2019 Elsevier Inc. In this study, we developed a simple multiplex miRNA detection platform based on rolling circle amplification and the fluorescence quenching property of reduced graphene oxide. The detection platform could be applied on a microfluidics chip with a mobile system controller to eliminate contamination and to facilitate potential use in remote areas. As a proof of concept, two fluorescence-labeled ssDNA tags were used for detection of miR-29a and miR-144*, two miRNAs that are highly expressed in the blood circulation of some patients with cancer or tuberculosis. The circular ssDNA probes in this study were designed to have an advantage over padlock probes as they can be prepared in advance. Our multiplex miRNA detection platform exhibited high sensitivity and selectivity, with a limit of detection of 0.05 pmol. In addition, our platform could detect target miRNAs from the total miRNA population extracted from human serum or a cancer cell line. These results indicated that our miRNA sensor has the potential to provide simple and high throughput miRNA analysis for disease diagnosis and prognosis.
ISSN: 10960309
Appears in Collections:Scopus 2019

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