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Incorporating peptide aptamers into resistive pulse sensing
The use of nanocarriers within resistive pulse sensing, RPS, aids the detection and quantification of analytes. In the absence of convection, the signal strength and frequency can dependent upon the electrophoretic mobility of the nanocarrier/analyte. Here, we have developed a simple strategy to inc...
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| Format: | Default Article |
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2020
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| Online Access: | https://hdl.handle.net/2134/11841111.v1 |
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| _version_ | 1805988271770042368 |
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| author | Rhushabh Maugi Zarina Salkenova Mark Platt |
| author_facet | Rhushabh Maugi Zarina Salkenova Mark Platt |
| author_sort | Rhushabh Maugi (2919815) |
| collection | Figshare |
| description | The use of nanocarriers within resistive pulse sensing, RPS, aids the detection and quantification of analytes. In the absence of convection, the signal strength and frequency can dependent upon the electrophoretic mobility of the nanocarrier/analyte. Here, we have developed a simple strategy to incorporate peptide aptamers onto RPS assays with enhanced electrophoretic signals. Using a hybrid DNA–Peptide nanocarrier, an existing peptide was incorporated into a rapid assay without having to engineer or modify the peptide sequence. The surface of a nanocarrier is coated with a mixture of peptide aptamers and a non‐binding DNA. The binding of the target to the peptide creates an “analyte corona” which shields the phosphate groups of the underlying DNA. This results in a change in electrophoretic mobility of the nanocarrier. The signal is concentration‐dependent and is illustrated using a peptide to a key biomarker of infection, C‐reactive protein, CRP. As a comparison, we also show the binding of the CRP to a DNA aptamer. This universal approach can be easily adapted to other peptides without the peptide itself to undergo any chemical modifications opening new opportunities and applications in RPS strategies. |
| format | Default Article |
| id | rr-article-11841111 |
| institution | Loughborough University |
| publishDate | 2020 |
| record_format | Figshare |
| spelling | rr-article-118411112020-01-18T00:00:00Z Incorporating peptide aptamers into resistive pulse sensing Rhushabh Maugi (2919815) Zarina Salkenova (8440527) Mark Platt (1257804) Aptamers C‐reactive protein Peptide Resistive pulse sensors The use of nanocarriers within resistive pulse sensing, RPS, aids the detection and quantification of analytes. In the absence of convection, the signal strength and frequency can dependent upon the electrophoretic mobility of the nanocarrier/analyte. Here, we have developed a simple strategy to incorporate peptide aptamers onto RPS assays with enhanced electrophoretic signals. Using a hybrid DNA–Peptide nanocarrier, an existing peptide was incorporated into a rapid assay without having to engineer or modify the peptide sequence. The surface of a nanocarrier is coated with a mixture of peptide aptamers and a non‐binding DNA. The binding of the target to the peptide creates an “analyte corona” which shields the phosphate groups of the underlying DNA. This results in a change in electrophoretic mobility of the nanocarrier. The signal is concentration‐dependent and is illustrated using a peptide to a key biomarker of infection, C‐reactive protein, CRP. As a comparison, we also show the binding of the CRP to a DNA aptamer. This universal approach can be easily adapted to other peptides without the peptide itself to undergo any chemical modifications opening new opportunities and applications in RPS strategies. 2020-01-18T00:00:00Z Text Journal contribution 2134/11841111.v1 https://figshare.com/articles/journal_contribution/Incorporating_peptide_aptamers_into_resistive_pulse_sensing/11841111 CC BY-NC-ND 4.0 |
| spellingShingle | Aptamers C‐reactive protein Peptide Resistive pulse sensors Rhushabh Maugi Zarina Salkenova Mark Platt Incorporating peptide aptamers into resistive pulse sensing |
| title | Incorporating peptide aptamers into resistive pulse sensing |
| title_full | Incorporating peptide aptamers into resistive pulse sensing |
| title_fullStr | Incorporating peptide aptamers into resistive pulse sensing |
| title_full_unstemmed | Incorporating peptide aptamers into resistive pulse sensing |
| title_short | Incorporating peptide aptamers into resistive pulse sensing |
| title_sort | incorporating peptide aptamers into resistive pulse sensing |
| topic | Aptamers C‐reactive protein Peptide Resistive pulse sensors |
| url | https://hdl.handle.net/2134/11841111.v1 |