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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 8, Iss. 10 — Oct. 1, 2010
  • pp: 947–949

Improving FRET efficiency measurement in confocal microscopy imaging

Huaina Yu, Tongsheng Chen, and Junle Qu  »View Author Affiliations


Chinese Optics Letters, Vol. 8, Issue 10, pp. 947-949 (2010)


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Abstract

Spectral bleedthrough (SBT) ratio is dependent on the level of fluorescence intensity in confocal imaging. Precision Forster resonance energy transfer (FRET) algorithm corrects SBT ratio according to fluorescence intensity and avoids over- or under-estimation of SBT ratio. In this letter, we propose a new method to accurately measure the FRET efficiency of FRET plasmid in single living cells by combining the calculation of SBT in precision FRET algorithm with E-FRET formulae. We also use this method to measure the FRET efficiency of FRET-Bid, and find that in healthy A549 cells it is about 15%, which is verified by FRET acceptor photobleaching method.

© 2010 Chinese Optics Letters

OCIS Codes
(110.2960) Imaging systems : Image analysis
(170.1790) Medical optics and biotechnology : Confocal microscopy
(100.3008) Image processing : Image recognition, algorithms and filters

Citation
Huaina Yu, Tongsheng Chen, and Junle Qu, "Improving FRET efficiency measurement in confocal microscopy imaging," Chin. Opt. Lett. 8, 947-949 (2010)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-8-10-947

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