Projects per year
Abstract
Dysfunctional intracellular enzymatic activity is believed to be an underlying cause of a myriad of diseases. We present the first use of surface enhanced Raman scattering (SERS) as a detection technique capable of reporting intracellular activity of a specific enzyme. Careful choice of reagents allowed the preparation of high resolution cellular activity maps highlighting the specific conversion of the commonly used ELISA reagent 5-bromo-4-chloro-3-indolyl β-d-galactopyranoside (X-Gal), by wild type β-galactosidase enzymes. Further, through co-addition of X-Gal substrate and inhibitors we were able to demonstrate that intracellular substrate conversion occurred predominantly through an enzymatically specific pathway. The data presented therefore supports the application of SERS probes as sensitive, specific sensors of biochemical activity and demonstrates the use of SERS probes for the first time as beacons capable of high resolution subcellular localisation of native enzymes.
Original language | English |
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Pages (from-to) | 6331-6336 |
Number of pages | 6 |
Journal | Analyst |
Volume | 138 |
Issue number | 21 |
Early online date | 29 Aug 2013 |
DOIs | |
Publication status | Published - 7 Nov 2013 |
Keywords
- enzymatic activity
- surface enhanced Raman scattering
- SERS
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Projects
- 2 Finished
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Wolfson Merit Award: Responsive Nanoparticles for Multi-Modal Imaging
1/11/10 → 31/10/15
Project: Research
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OPTICAL SPECTROSCOPIES FOR IMMUNO-BIOMEDICAL APPLICATIONS
Graham, D., Alexander, J., Birch, D., Faulds, K., Garside, P. & Smith, W.
EPSRC (Engineering and Physical Sciences Research Council)
1/08/06 → 31/01/12
Project: Research