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Fluorescence detection methods for microfluidic droplet platforms
Published on: December 10, 2011
Development of a time domain fluorimeter for fluorescent lifetime multiplexing analysis
Christopher D Salthouse1, Ralph Weissleder, Umar Mahmood
1Center for Molecular Imaging Research (CMIR), the Massachusetts General Hospital, Charlestown, MA 02129-2060 USA.
IEEE Transactions on Biomedical Circuits and Systems
|October 16, 2009
Summary
A new portable time domain fluorimeter (TDF) enables fluorescent lifetime multiplexing. This technique multiplies imaging channels by separating reporters in a second dimension, overcoming spectral limitations.
Area of Science:
- Biophotonics
- Analytical Chemistry
- Molecular Imaging
Background:
- Spectral separation alone limits simultaneous imaging of biological features due to broad fluorophore spectra.
- Multiplexing distinct biological processes requires advanced imaging techniques.
Purpose of the Study:
- To develop a portable, cost-effective time domain fluorimeter (TDF) for evaluating novel fluorescent lifetime multiplexing dyes.
- To enhance the number of simultaneously imaged features in biological systems.
Main Methods:
- Development of a USB-powered time domain fluorimeter (TDF).
- Implementation of an analysis scheme for fluorescent lifetime multiplexing.
- Utilizing the second dimension of fluorescent lifetime for reporter separation.
Main Results:
- A functional TDF and analysis scheme were successfully created.
- Demonstrated the capability of fluorescent lifetime multiplexing to overcome spectral limitations.
- Showcased a method to multiply available imaging channels.
Conclusions:
- Fluorescent lifetime multiplexing offers a powerful approach to increase imaging dimensionality.
- The developed TDF system provides a practical tool for advanced biological imaging.
- This method significantly expands the capacity for simultaneous observation of biological processes.
