Volume 1, Issue 6 pp. 463-469
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Optical knock out of stem cells with extremely ultrashort femtosecond laser pulses

Aisada Uchugonova

Aisada Uchugonova

Fraunhofer Institute for Biomedical Technology IBMT, Ensheimer Straße 48, 66386 St. Ingbert, Germany

Saarland University, Faculty of Mechatronics and Physics, Campus, 66123 Saarbrücken, Germany

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Andreas Isemann

Andreas Isemann

FEMTOLASERS Produktions GmbH, Fernkorngasse 10, 1100 Vienna, Austria

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Erwin Gorjup

Erwin Gorjup

Fraunhofer Institute for Biomedical Technology IBMT, Ensheimer Straße 48, 66386 St. Ingbert, Germany

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Gabriel Tempea

Gabriel Tempea

FEMTOLASERS Produktions GmbH, Fernkorngasse 10, 1100 Vienna, Austria

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Rainer Bückle

Rainer Bückle

JenLab GmbH, Schillerstraße 1, 07745 Jena, Germany

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Wataru Watanabe

Wataru Watanabe

Photonics Research Institute, National Institute of Advanced Industrial Science and Technology AIST, 1-8-31, Midorigaoka, Ikeda, Osaka 563-8577, Japan

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Karsten König

Corresponding Author

Karsten König

Saarland University, Faculty of Mechatronics and Physics, Campus, 66123 Saarbrücken, Germany

JenLab GmbH, Schillerstraße 1, 07745 Jena, Germany

Phone: +49 6813023451, Fax: +49 6813023090Search for more papers by this author
First published: 05 December 2008
Citations: 21

Abstract

Novel ultracompact multiphoton sub-20 femtosecond near infrared 85 MHz laser scanning microscopes and conventional 250 fs laser microscopes have been used to perform high spatial resolution two-photon imaging of stem cell clusters as well as selective intracellular nanoprocessing and knock out of living single stem cells within an 3D microenvironment without any collateral damage. Also lethal cell exposure of large parts of cell clusters was successfully probed while maintaining single cells of interest alive. The mean power could be kept in the milliwatt range for 3D nanoprocessing and even in the microwatt range for two-photon imaging. Ultracompact low power sub-20 fs laser systems may become interesting tools for optical nanobiotechnology such as optical cleaning of stem cell clusters as well as optical transfection. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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