Related Experiment Video
Updated: Mar 5, 2026
08:23
Design and Development of Aptamer–Gold Nanoparticle Based Colorimetric Assays for In-the-field Applications
Published on: June 23, 2016
12.8K
Fast and Selective Plasmonic Serotonin Detection with Aptamer-Gold Nanoparticle Conjugates
Jorge L Chávez1, Joshua A Hagen2, Nancy Kelley-Loughnane3
1711th Human Performance Wing, Airman Systems Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH 45433, USA. jorge.chavez_benavides.2@us.af.mil.
Sensors (Basel, Switzerland)
|March 28, 2017
Summary
Researchers developed a colorimetric assay using aptamer-gold nanoparticle conjugates for fast and selective serotonin detection. This platform shows promise for point-of-care diagnostics and personalized medicine applications.
Area of Science:
- Biochemistry
- Nanotechnology
- Neuroscience
Background:
- Neurotransmitter detection is crucial for understanding brain and tissue communication.
- Serotonin's role in various conditions requires further investigation.
- Developing rapid and selective serotonin detection methods is essential for research and clinical applications.
Purpose of the Study:
- To design and develop a colorimetric assay for sensitive and selective serotonin detection.
- To create stable aptamer-gold nanoparticle conjugates for serotonin monitoring.
- To evaluate the assay's performance in biologically relevant conditions.
Main Methods:
- Conjugation of DNA aptamers to gold nanoparticles (AuNPs) via adsorption.
- Development of a colorimetric assay based on aptamer-AuNP interactions.
- Testing the assay's selectivity against serotonin metabolites and other neurotransmitters.
- Validation of the assay using filtered spiked fetal bovine serum.
Main Results:
- Successfully designed aptamer-gold nanoparticle conjugates with colorimetric response to serotonin.
- Achieved minimal cross-reactivity with serotonin metabolites and other neurotransmitters.
- Demonstrated a plasmonic assay capable of detecting biologically relevant serotonin levels.
- Confirmed assay stability and performance in a simulated biofluid environment.
Conclusions:
- Simple and stable aptamer-AuNP conjugates are effective for serotonin detection.
- The developed assay is selective and sensitive, suitable for biologically relevant concentrations.
- This platform holds potential for developing rapid, point-of-care diagnostic tools for personalized medicine.
