Title |
A Novel DNA Biosensor Using a Ferrocenyl Intercalator Applied to the Potential Detection of Human Population Biomarkers in Wastewater
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Published in |
Environmental Science & Technology, April 2015
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DOI | 10.1021/acs.est.5b00637 |
Pubmed ID | |
Authors |
Zhugen Yang, Marc Anglès d’Auriac, Sean Goggins, Barbara Kasprzyk-Hordern, Kevin V. Thomas, Christopher G. Frost, Pedro Estrela |
Abstract |
A new label-free electrochemical DNA (E-DNA) biosensor using a custom synthesized ferrocenyl (Fc) double-stranded DNA (dsDNA) intercalator as a redox marker is presented. Single-stranded DNA (ssDNA) was co-immobilized on gold electrodes with 6-mecarpto-hexanol (MCH) to control the surface density of the ssDNA probe, and hybridized with complementary DNA. The binding of the Fc intercalator to dsDNA was measured by differential pulse voltammetry (DPV). This new biosensor was optimized to allow the detection of single base pair mismatched sequences and, able to detect as low as 10 pM target ssDNA with a dynamic range from 10 pM to 100 nM. DNA extracted from wastewater was analysed by quantitative polymerase chain reaction (qPCR) targeting human-specific mitochondrial DNA (mtDNA). The aim of this approach is to enable the analysis of population biomarkers in wastewater for the evaluation of public health using wastewater-based epidemiology (WBE). The E-DNA biosensor was employed to detect human-specific mtDNA from wastewater before and after PCR amplification. The results demonstrate the feasibility of detecting DNA biomarkers in wastewater using the developed biosensor, which may allow the further development of DNA population biomarkers for public health using WBE. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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United Kingdom | 2 | 3% |
Spain | 1 | 1% |
Unknown | 68 | 96% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 16 | 23% |
Researcher | 13 | 18% |
Student > Master | 9 | 13% |
Professor | 4 | 6% |
Other | 2 | 3% |
Other | 8 | 11% |
Unknown | 19 | 27% |
Readers by discipline | Count | As % |
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Chemistry | 19 | 27% |
Environmental Science | 6 | 8% |
Agricultural and Biological Sciences | 5 | 7% |
Engineering | 5 | 7% |
Biochemistry, Genetics and Molecular Biology | 2 | 3% |
Other | 7 | 10% |
Unknown | 27 | 38% |