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Surface Enhanced Raman Spectroscopy Detection of Biomolecules Using EBL Fabricated Nanostructured Substrates
Published on: March 20, 2015
Avidin decorated core-shell nanoparticles for biorecognition studies by elastic light scattering
Davide Prosperi1, Carlo Morasso, Paolo Tortora
1Istituto di Scienze e Tecnologie Molecolari, National Research Council (CNR), Via Golgi 19, 20133 Milano, Italy. davide.prosperi@unimi.it
Chembiochem : a European Journal of Chemical Biology
|May 16, 2007
Summary
This study introduces a novel light-scattering method using core-shell nanoparticles for sensitive protein-ligand interaction detection. The assay demonstrates high specificity and affinity, offering a reliable tool for proteomics research.
Area of Science:
- Biotechnology
- Nanotechnology
- Analytical Chemistry
Background:
- Accurate quantification of protein-ligand interactions is crucial for proteomics.
- Existing methods can be limited by sensitivity, specificity, or complexity.
- Nanoparticle-based assays offer potential for improved detection capabilities.
Purpose of the Study:
- To develop a sensitive and reliable method for quantitative determination of protein-ligand interactions.
- To utilize core-shell nanoparticles as a platform for detecting these interactions.
- To establish a bio-invisible nanosensor for specific biomolecular detection.
Main Methods:
- Employing elastic light scattering for signal detection.
- Designing core-shell nanoparticles with minimal optical contrast.
- Coating nanoparticles with avidin and bio-invisibility agents (oligo(ethylene glycol)-based amphiphiles).
- Utilizing biotinylated proteins and human IgG antibodies as model systems.
Main Results:
- Demonstrated sensitive and reliable quantitative determination of protein-ligand interactions.
- Achieved high specificity and affinities in the low nanomolar range.
- Successfully detected biotinylated proteins and human IgG antibodies with picomolar sensitivity.
- Developed a bio-invisible hybrid system for specific macromolecule adsorption.
Conclusions:
- Elastic light scattering-based nanosensors provide a simple and informative tool for proteomics.
- The developed assay is effective for quantitative analysis of protein-ligand binding.
- This method shows promise for various applications in biomolecular detection and diagnostics.
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