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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 3, Iss. 12 — Dec. 1, 2008

Time-resolved spectroscopic imaging reveals the fundamentals of cellular NADH fluorescence

Dong Li, Wei Zheng, and Jianan Y. Qu  »View Author Affiliations


Optics Letters, Vol. 33, Issue 20, pp. 2365-2367 (2008)
http://dx.doi.org/10.1364/OL.33.002365


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Abstract

A time-resolved spectroscopic imaging system is built to study the fluorescence characteristics of nicotinamide adenine dinucleotide (NADH), an important metabolic coenzyme and endogenous fluorophore in cells. The system provides a unique approach to measure fluorescence signals in different cellular organelles and cytoplasm. The ratios of free over protein-bound NADH signals in cytosol and nucleus are slightly higher than those in mitochondria. The mitochondrial fluorescence contributes about 70% of overall cellular fluorescence and is not a completely dominant signal. Furthermore, NADH signals in mitochondria, cytosol, and the nucleus respond to the changes of cellular activity differently, suggesting that cytosolic and nuclear fluorescence may complicate the well-known relationship between mitochondrial fluorescence and cellular metabolism.

© 2008 Optical Society of America

OCIS Codes
(170.1530) Medical optics and biotechnology : Cell analysis
(170.6920) Medical optics and biotechnology : Time-resolved imaging
(300.6500) Spectroscopy : Spectroscopy, time-resolved

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: June 27, 2008
Revised Manuscript: August 19, 2008
Manuscript Accepted: August 26, 2008
Published: October 14, 2008

Virtual Issues
Vol. 3, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Dong Li, Wei Zheng, and Jianan Y. Qu, "Time-resolved spectroscopic imaging reveals the fundamentals of cellular NADH fluorescence," Opt. Lett. 33, 2365-2367 (2008)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-33-20-2365


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