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Programmable microfluidic synthesis of spectrally encoded microspheres
R E Gerver1, R Gómez-Sjöberg, B C Baxter
1UC San Francisco/UC Berkeley Joint Graduate Group in Bioengineering, San Francisco, CA 94158-2517, USA.
Lab on a Chip
|October 9, 2012
Summary
Researchers developed spectrally encoded fluorescent beads using lanthanide nanophosphors for biological assays. This novel platform enables highly multiplexed detection with minimal error, paving the way for advanced diagnostic tools.
Area of Science:
- Biotechnology
- Materials Science
- Analytical Chemistry
Background:
- Spectrally encoded fluorescent beads offer potential for miniaturized biological assays.
- Multiplexing assays is crucial for high-throughput biological analysis.
Purpose of the Study:
- To synthesize novel hydrophilic polymer beads encoded with lanthanide nanophosphors.
- To develop a scalable platform for high-density spectral multiplexing in biological assays.
Main Methods:
- Utilized a fully automated microfluidic device for bead synthesis.
- Incorporated varying ratios of two lanthanide nanophosphors relative to a reference nanophosphor for spectral encoding.
- Developed a method to generate 24 distinct spectral codes with high precision.
Main Results:
- Synthesized hydrophilic PEG-acrylate polymer beads encoded with lanthanide nanophosphors.
- Achieved distinct spectral codes with variations less than 3% from target values.
- Demonstrated high distinguishability between codes with an error rate below 0.1%.
Conclusions:
- The developed spectrally encoded beads are a viable platform for assay miniaturization and multiplexing.
- The synthesis strategy is highly extensible, potentially enabling millions of unique codes.
- This technology advances the field of high-throughput biological assays and diagnostics.
