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Wang M, Yu Y, Liu F, Ren L, Zhang Q, Zou G. Single polydiacetylene microtube waveguide platform for discriminating microRNA-215 expression levels in clinical gastric cancerous, paracancerous and normal tissues. Talanta 2018; 188:27-34. [PMID: 30029375 DOI: 10.1016/j.talanta.2018.05.049] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 03/18/2018] [Accepted: 05/13/2018] [Indexed: 12/21/2022]
Abstract
MicroRNAs (miRNAs) have emerged as novel biomarkers for human early-phase cancer diagnosis and disease prevention recently. Herein, we reported a novel miRNA-215 targeting biosensor, which was based on single polydiacetylene (PDA) microtube waveguide system integrated with sandwich-type hybridization design and condensing enrichment effect. The target miRNA could be captured by oligonucleotides conjugated on the surface of PDA microtube and Au nanorod (AuNR) respectively, resulting in the out-coupled fluorescence of PDA microtube quenching. In this strategy, the formation of a sandwich structure, as a result of co-hybridization of the target miRNA, enabled simplified preparation process, enhanced reaction efficiency, and increased recyclability and stability of the platform. Based on condensing enrichment effect, the co-hybridization reaction could be enriched on the surface of microtube and the proposed platform could easily achieve highly sensitive detection of miRNA-215 in one step. Remarkably, this platform could be directly applied to discriminate the miRNA-215 expression levels in clinical gastric cancerous, paracancerous and normal tissues samples. This assay offers a simple and convenient method for miRNA quantification in clinical samples, even with the potential for invasive, portable equipment for early clinical diagnosis of diseases.
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Affiliation(s)
- Mengqiao Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Yue Yu
- Division of Gastroenterology, Affiliated Provincial Hospital, Anhui Medical University, No.17 Lu Jiang Road, Hefei, Anhui 230001, PR China
| | - Funing Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Le Ren
- Division of Gastroenterology, Affiliated Provincial Hospital, Anhui Medical University, No.17 Lu Jiang Road, Hefei, Anhui 230001, PR China
| | - Qijin Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Gang Zou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
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Zhu Y, Qiu D, Yang G, Wang M, Zhang Q, Wang P, Ming H, Zhang D, Yu Y, Zou G, Badugu R, Lakowicz JR. Selective and sensitive detection of MiRNA-21 based on gold-nanorod functionalized polydiacetylene microtube waveguide. Biosens Bioelectron 2016; 85:198-204. [PMID: 27179561 PMCID: PMC4983514 DOI: 10.1016/j.bios.2016.05.019] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 04/29/2016] [Accepted: 05/03/2016] [Indexed: 11/17/2022]
Abstract
Development of rapid, highly selective and sensitive miRNA detection in a complex biological environment has attracted considerable attention. Herein, we describe a novel two step method to construct gold-nanorod functionalized polydiacetylene (PDA) microtube for miRNA detection. In PDA microtube, with a one-dimensional (1D) waveguide nature, the excitation position and emission out-coupling position are far apart, thus helpful in reducing contribution of auto-fluorescence from biological sample. The use of specially designed toehold-mediated strand displacement reaction enables the reliable and selective discrimination of miRNA sequences with high sequence homology. Based on the condensing enrichment effect, the detection limit of the proposed PDA microtube system is as low as 0.01nM, and it can be applied directly to detect disease-specific miRNA targets in human serum. This PDA microtube waveguide system can be further integrated into the chip for the potential applications in minimally invasive, portable clinical diagnostic equipment.
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Affiliation(s)
- Yu Zhu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026 PR China
| | - Dong Qiu
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Guang Yang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026 PR China
| | - Mengqiao Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026 PR China
| | - Qijin Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026 PR China
| | - Pei Wang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Hai Ming
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China
| | - Douguo Zhang
- Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
| | - Yue Yu
- Division of Gastroenterology, Affiliated Provincial Hospital, Anhui Medical University, No.17 Lu Jiang Road, Hefei, Anhui 230001, PR China.
| | - Gang Zou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026 PR China.
| | - Ramachandram Badugu
- Center for Fluorescence Spectroscopy, Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, United States
| | - Joseph R Lakowicz
- Center for Fluorescence Spectroscopy, Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, United States
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Alarfaj NA, El-Tohamy MF. Applications of micelle enhancement in luminescence-based analysis. LUMINESCENCE 2014; 30:3-11. [PMID: 24802358 DOI: 10.1002/bio.2694] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 02/24/2014] [Accepted: 03/26/2014] [Indexed: 11/07/2022]
Abstract
Micelles are self-assembled aggregates that arrange themselves into spheres in aqueous media. When the surfactant concentration reaches the critical micelle concentration, extensive aggregation of the surfactant monomers occurs to form micelles. A micelle has both a hydrophilic and a hydrophobic part. This allows them to form a spherical shape and for their glycolipid and phospholipid components to form lipid bilayers. The importance of micelles is increasing because of their wide analytical applications. Recently, colloidal carrier systems have received much attention in the field of analytical chemistry, especially in luminescence enhancement applications.
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Affiliation(s)
- Nawal A Alarfaj
- Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh, 11495, Saudi Arabia
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