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Diffusive and directional intracellular dynamics measured by field-based dynamic light scattering
Chulmin Joo, Conor L. Evans, Thomas Stepinac, Tayyaba Hasan, and Johannes F. de Boer »View Author Affiliations
1Wellman Center for Photomedicine, Harvard Medical School and Massachusetts General Hospital, Boston, Massachusetts 02114, U.S.A.
2Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, U.S.A.
3Department of Physics and Astronomy, VU University, De Boelelaan 1081, 1081 HV Amsterdam, The Netherlands
4cmjoo@alum.mit.edu
*Corresponding author: jfdeboer@few.vu.nl
Optics Express, Vol. 18, Issue 3, pp. 2858-2871 (2010)
http://dx.doi.org/10.1364/OE.18.002858
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Abstract
Quantitative measurement of diffusive and directional processes of intracellular structures is not only critical in understanding cell mechanics and functions, but also has many applications, such as investigation of cellular responses to therapeutic agents. We introduce a label-free optical technique that allows non-perturbative characterization of localized intracellular dynamics. The method combines a field-based dynamic light scattering analysis with a confocal interferometric microscope to provide a statistical measure of the diffusive and directional motion of scattering structures inside a microscopic probe volume. To demonstrate the potential of this technique, we examined the localized intracellular dynamics in human epithelial ovarian cancer cells. We observed the distinctive temporal regimes of intracellular dynamics, which transitions from random to directional processes on a timescale of ~0.01 sec. In addition, we observed disrupted directional processes on the timescale of 1~5 sec by the application of a microtubule polymerization inhibitor, Colchicine, and ATP depletion.
© 2010 OSA
OCIS Codes
(170.1530) Medical optics and biotechnology : Cell analysis
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4500) Medical optics and biotechnology : Optical coherence tomography
(290.1350) Scattering : Backscattering
(290.5820) Scattering : Scattering measurements
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: October 21, 2009
Revised Manuscript: December 17, 2009
Manuscript Accepted: December 29, 2009
Published: January 27, 2010
Virtual Issues
Vol. 5, Iss. 4 Virtual Journal for Biomedical Optics
Citation
Chulmin Joo, Conor L. Evans, Thomas Stepinac, Tayyaba Hasan, and Johannes F. de Boer, "Diffusive and directional intracellular dynamics measured by field-based dynamic light scattering," Opt. Express 18, 2858-2871 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-3-2858
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- G. Popescu, T. Ikeda, R. R. Dasari, and M. S. Feld, “Diffraction phase microscopy for quantifying cell structure and dynamics,” Opt. Lett. 31(6), 775–777 (2006). [CrossRef] [PubMed]
- A. Wax, C. Yang, V. Backman, K. Badizadegan, C. W. Boone, R. R. Dasari, and M. S. Feld, “Cellular organization and substructure measured using angle-resolved low-coherence interferometry,” Biophys. J. 82(4), 2256–2264 (2002). [CrossRef] [PubMed]
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- R. P. Kulkarni, D. D. Wu, M. E. Davis, and S. E. Fraser, “Quantitating intracellular transport of polyplexes by spatio-temporal image correlation spectroscopy,” Proc. Natl. Acad. Sci. U.S.A. 102(21), 7523–7528 (2005). [CrossRef] [PubMed]
- G. Lenormand, J. Chopin, P. Bursac, J. J. Fredberg, and J. P. Butler, “Directional memory and caged dynamics in cytoskeletal remodelling,” Biochem. Biophys. Res. Commun. 360(4), 797–801 (2007). [CrossRef] [PubMed]
- L. Deng, X. Trepat, J. P. Butler, E. Millet, K. G. Morgan, D. A. Weitz, and J. J. Fredberg, “Fast and slow dynamics of the cytoskeleton,” Nat. Mater. 5(8), 636–640 (2006). [CrossRef] [PubMed]
- P. Bursac, G. Lenormand, B. Fabry, M. Oliver, D. A. Weitz, V. Viasnoff, J. P. Butler, and J. J. Fredberg, “Cytoskeletal remodelling and slow dynamics in the living cell,” Nat. Mater. 4(7), 557–561 (2005). [CrossRef] [PubMed]
- I. Itzkan, L. Qiu, H. Fang, M. M. Zaman, E. Vitkin, I. C. Ghiran, S. Salahuddin, M. Modell, C. Andersson, L. M. Kimerer, P. B. Cipolloni, K.-H. Lim, S. D. Freedman, I. Bigio, B. P. Sachs, E. B. Hanlon, and L. T. Perelman, “Confocal light absorption and scattering spectroscopic microscopy monitors organelles in live cells with no exogenous labels,” Proc. Natl. Acad. Sci. U.S.A. 104(44), 17255–17260 (2007). [CrossRef] [PubMed]
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