Multi-color single filter photobleaching analysis for measuring gene expression

P. K. Wong, L. J. Chun, C. M. Ho

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


Fluorescence microscopy is widely used in biomedical applications to quantitatively measure specific molecular signatures. It is often valuable to study several biosignatures simultaneously, such as in early stages of cancer diagnostics. Currently, multiple analyte can be observed based on the excitation and emission spectra of fluorescent dyes. However, the number of concurrent dyes is limited by the optical spectral bandwidth. We have developed a novel identification technique based on the photostability of different fluorophores. Fluorophore identification was demonstrated in mixtures of rhodamine 6B and rhodamine 6G. In addition, the concentration of each dye was successfully determined. Since the analysis is independent of the individual dye spectra, this technology can be easily integrated with existing spectra-based systems for expanding the ability of multi-analyte detection.

Original languageEnglish (US)
Pages (from-to)629-630
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
StatePublished - 2002
EventProceedings of the 2002 IEEE Engineering in Medicine and Biology 24th Annual Conference and the 2002 Fall Meeting of the Biomedical Engineering Society (BMES / EMBS) - Houston, TX, United States
Duration: Oct 23 2002Oct 26 2002

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics


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