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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 3, Iss. 3 — Mar. 1, 2012
  • pp: 447–454

Remote switching of cellular activity and cell signaling using light in conjunction with quantum dots

Katherine Lugo, Xiaoyu Miao, Fred Rieke, and Lih Y. Lin  »View Author Affiliations


Biomedical Optics Express, Vol. 3, Issue 3, pp. 447-454 (2012)
http://dx.doi.org/10.1364/BOE.3.000447


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Abstract

Stimulating cells by using light is a non-invasive technique that provides flexibility in probing different locations while minimizing unintended effects on the system. We propose a new way to make cells photosensitive without using genetic or chemical manipulation, which alters natural cells, in conjunction with Quantum Dots (QDs). Remote switching of cellular activity by optical QD excitation is demonstrated by integrating QDs with cells: CdTe QD films with prostate cancer (LnCap) cells, and CdSe QD films and probes with cortical neurons. Changes in membrane potential and ionic currents are recorded by using the patch-clamp method. Upon excitation, the ion channels in the cell membrane were activated, resulting in hyperpolarization or depolarization of the cell.

© 2012 OSA

OCIS Codes
(170.3890) Medical optics and biotechnology : Medical optics instrumentation
(170.4090) Medical optics and biotechnology : Modulation techniques
(170.5380) Medical optics and biotechnology : Physiology
(230.5590) Optical devices : Quantum-well, -wire and -dot devices
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:
Cell Studies

History
Original Manuscript: October 24, 2011
Revised Manuscript: December 19, 2011
Manuscript Accepted: January 18, 2012
Published: February 8, 2012

Citation
Katherine Lugo, Xiaoyu Miao, Fred Rieke, and Lih Y. Lin, "Remote switching of cellular activity and cell signaling using light in conjunction with quantum dots," Biomed. Opt. Express 3, 447-454 (2012)
http://www.opticsinfobase.org/boe/abstract.cfm?URI=boe-3-3-447


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