Optics InfoBase > Virtual Journal for Biomedical Optics > Volume 2 > Issue 11 > Page 12548
Multifocal multiphoton excitation and time correlated single photon counting detection for 3-D fluorescence lifetime imaging
S. Kumar, C. Dunsby, P. A. A. De Beule, D. M. Owen, U. Anand, P. M. P. Lanigan, R. K. P. Benninger, D. M. Davis, M. A. A. Neil, P. Anand, C. Benham, A. Naylor, and P. M. W. French »View Author Affiliations
1Chemical Biology Centre, Imperial College London, London, SW7 2AZ, UK
2Photonics, Department of Physics, Imperial College London, London, SW7 2AZ, UK
3Cancer Research UK, Lincoln’s Inn Fields, London, WC2A 3PX, UK
4Division of Cell and Molecular Biology, Imperial College London, London, SW7 2AZ, UK
5Division of Neurosciences and Mental Health, Imperial College London, Du Cane Road, London, W12 ONN, UK
6GlaxoSmithKline, New Frontiers Science Park, Harlow, CM19 5AW, UK
*Corresponding author: christopher.dunsby@imperial.ac.uk
Optics Express, Vol. 15, Issue 20, pp. 12548-12561 (2007)
http://dx.doi.org/10.1364/OE.15.012548
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Abstract
We report a multifocal multiphoton time-correlated single photon counting (TCSPC) fluorescence lifetime imaging (FLIM) microscope system that uses a 16 channel multi-anode PMT detector. Multiphoton excitation minimizes out-of-focus photobleaching, multifocal excitation reduces non-linear in-plane photobleaching effects and TCSPC electronics provide photon-efficient detection of the fluorescence decay profile. TCSPC detection is less prone to bleaching- and movement-induced artefacts compared to wide-field time-gated or frequency-domain FLIM. This microscope is therefore capable of acquiring 3-D FLIM images at significantly increased speeds compared to single beam multiphoton microscopy and we demonstrate this with live cells expressing a GFP tagged protein. We also apply this system to time-lapse FLIM of NAD(P)H autofluorescence in single live cells and report measurements on the change in the fluorescence decay profile following the application of a known metabolic inhibitor.
© 2007 Optical Society of America
OCIS Codes
(110.0180) Imaging systems : Microscopy
(180.2520) Microscopy : Fluorescence microscopy
ToC Category:
Microscopy
History
Original Manuscript: August 9, 2007
Revised Manuscript: September 6, 2007
Manuscript Accepted: September 11, 2007
Published: September 17, 2007
Virtual Issues
Vol. 2, Iss. 11 Virtual Journal for Biomedical Optics
Citation
S. Kumar, C. Dunsby, P. A. A. De Beule, D. M. Owen, U. Anand, P. M. P. Lanigan, R. K. P. Benninger, D. M. Davis, M. A. A. Neil, P. Anand, C. Benham, A. Naylor, and P. M. W. French, "Multifocal multiphoton excitation and time correlated single photon counting detection for 3-D fluorescence lifetime imaging," Opt. Express 15, 12548-12561 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-15-20-12548
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Am. J. Physiol.-Cell Physiol.
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Appl. Phys. B-Lasers and Optics
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Biochemistry
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Biol. Cell
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Biophys. J.
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Cancer Res.
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Chemphyschem
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J. Biochem.(Tokyo)
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J. Biol. Chem.
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J. Cell Biol.
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J. Microsc.
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Microsc. Res. Tech.
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