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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 20 — Sep. 26, 2011
  • pp: 19212–19222

Calcium imaging in the optical stretcher

Markus Gyger, Daniel Rose, Roland Stange, Tobias Kießling, Mareike Zink, Ben Fabry, and Josef A. Käs  »View Author Affiliations

Optics Express, Vol. 19, Issue 20, pp. 19212-19222 (2011)

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The Microfluidic Optical Stretcher (MOS) has previously been shown to be a versatile tool to measure mechanical properties of single suspended cells. In this study we combine optical stretching and fluorescent calcium imaging. A cell line transfected with a heat sensitive cation channel was used as a model system to show the versatility of the setup. The cells were loaded with the Ca2+ dye Fluo-4 and imaged with confocal laser scanning microscopy while being stretched. During optical stretching heat is transferred to the cell causing a pronounced Ca2+ influx through the cation channel. The technique opens new perspectives for investigating the role of Ca2+ in regulating cell mechanical behavior.

© 2011 OSA

OCIS Codes
(110.0180) Imaging systems : Microscopy
(120.6810) Instrumentation, measurement, and metrology : Thermal effects
(170.1530) Medical optics and biotechnology : Cell analysis
(170.1790) Medical optics and biotechnology : Confocal microscopy
(170.2520) Medical optics and biotechnology : Fluorescence microscopy
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.2655) Medical optics and biotechnology : Functional monitoring and imaging
(350.4855) Other areas of optics : Optical tweezers or optical manipulation

ToC Category:
Medical Optics and Biotechnology

Original Manuscript: May 2, 2011
Revised Manuscript: July 14, 2011
Manuscript Accepted: August 1, 2011
Published: September 19, 2011

Virtual Issues
Vol. 6, Iss. 10 Virtual Journal for Biomedical Optics

Markus Gyger, Daniel Rose, Roland Stange, Tobias Kießling, Mareike Zink, Ben Fabry, and Josef A. Käs, "Calcium imaging in the optical stretcher," Opt. Express 19, 19212-19222 (2011)

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