A Highly Sensitive Plasmonic DNA Assay Based on Triangular Silver Nanoprism Etching
Specific nucleic acid detection by using simple and low-cost assays is important in clinical diagnostics, mutation detection, and biodefense applications. Most current methods for the quantification of low concentrations of DNA require costly and sophisticated instruments. Here, we have developed a...
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| Published in | ACS nano Vol. 8; no. 5; pp. 4902 - 4907 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
American Chemical Society
27.05.2014
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| Subjects | |
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| Abstract | Specific nucleic acid detection by using simple and low-cost assays is important in clinical diagnostics, mutation detection, and biodefense applications. Most current methods for the quantification of low concentrations of DNA require costly and sophisticated instruments. Here, we have developed a facile DNA detection platform based on a plasmonic triangular silver nanoprism etching process, in which the shape and size of the nanoprisms were altered accompanied by a substantial surface plasmon resonance shift. Through the combination of enzyme-linked hybridization chain reaction amplification and inherent sensitivity of plasmonic silver nanoprims, this assay could detect as low as 6.0 fM target DNA. Considering the high sensitivity and selectivity of this plasmonic DNA assay, it is expected to be of great interest in clinical diagnostics. |
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| AbstractList | Specific nucleic acid detection by using simple and low-cost assays is important in clinical diagnostics, mutation detection, and biodefense applications. Most current methods for the quantification of low concentrations of DNA require costly and sophisticated instruments. Here, we have developed a facile DNA detection platform based on a plasmonic triangular silver nanoprism etching process, in which the shape and size of the nanoprisms were altered accompanied by a substantial surface plasmon resonance shift. Through the combination of enzyme-linked hybridization chain reaction amplification and inherent sensitivity of plasmonic silver nanoprims, this assay could detect as low as 6.0 fM target DNA. Considering the high sensitivity and selectivity of this plasmonic DNA assay, it is expected to be of great interest in clinical diagnostics.Specific nucleic acid detection by using simple and low-cost assays is important in clinical diagnostics, mutation detection, and biodefense applications. Most current methods for the quantification of low concentrations of DNA require costly and sophisticated instruments. Here, we have developed a facile DNA detection platform based on a plasmonic triangular silver nanoprism etching process, in which the shape and size of the nanoprisms were altered accompanied by a substantial surface plasmon resonance shift. Through the combination of enzyme-linked hybridization chain reaction amplification and inherent sensitivity of plasmonic silver nanoprims, this assay could detect as low as 6.0 fM target DNA. Considering the high sensitivity and selectivity of this plasmonic DNA assay, it is expected to be of great interest in clinical diagnostics. Specific nucleic acid detection by using simple and low-cost assays is important in clinical diagnostics, mutation detection, and biodefense applications. Most current methods for the quantification of low concentrations of DNA require costly and sophisticated instruments. Here, we have developed a facile DNA detection platform based on a plasmonic triangular silver nanoprism etching process, in which the shape and size of the nanoprisms were altered accompanied by a substantial surface plasmon resonance shift. Through the combination of enzyme-linked hybridization chain reaction amplification and inherent sensitivity of plasmonic silver nanoprims, this assay could detect as low as 6.0 fM target DNA. Considering the high sensitivity and selectivity of this plasmonic DNA assay, it is expected to be of great interest in clinical diagnostics. |
| Author | Yu, Yuebo Yang, Xinjian Gao, Zhiqiang |
| AuthorAffiliation | National University of Singapore |
| AuthorAffiliation_xml | – name: National University of Singapore |
| Author_xml | – sequence: 1 givenname: Xinjian surname: Yang fullname: Yang, Xinjian – sequence: 2 givenname: Yuebo surname: Yu fullname: Yu, Yuebo – sequence: 3 givenname: Zhiqiang surname: Gao fullname: Gao, Zhiqiang email: chmgaoz@nus.edu.sg |
| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/24766422$$D View this record in MEDLINE/PubMed |
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| SubjectTerms | Biosensing Techniques DNA - chemistry Electrophoresis, Polyacrylamide Gel Enzymes - chemistry Glucose - chemistry Humans Metal Nanoparticles - chemistry Microarray Analysis - instrumentation Microarray Analysis - methods Microscopy, Electron, Transmission Nanotechnology - methods Nucleic Acid Hybridization Nucleic Acids - chemistry Sensitivity and Specificity Silver - chemistry Silver Compounds - chemistry Spectrophotometry, Ultraviolet Surface Plasmon Resonance |
| Title | A Highly Sensitive Plasmonic DNA Assay Based on Triangular Silver Nanoprism Etching |
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