Papers

Peer-reviewed
2017

Photo-Induced Cell Damage Analysis for Single- and Multifocus Coherent Anti-Stokes Raman Scattering Microscopy

JOURNAL OF SPECTROSCOPY
  • Takeo Minamikawa
  • ,
  • Yoshinori Murakami
  • ,
  • Naokazu Matsumura
  • ,
  • Hirohiko Niioka
  • ,
  • Shuichiro Fukushima
  • ,
  • Tsutomu Araki
  • ,
  • Mamoru Hashimoto

Volume
2017
Number
First page
ID 5725340, 8 pages
Last page
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1155/2017/5725340
Publisher
HINDAWI LTD

In this study, we investigated photo-induced damage to living cells during single-and multifocus excitations for coherent anti-Stokes Raman scattering (CARS) imaging. A near-infrared pulsed laser (709 nm) was used to induce cell damage. We compared the photo-induced cell damage in the single- and the multifocus excitation schemes with the condition to obtain the same CARS signal in the same frame rate. For the evaluation of cell viability, we employed 4', 6-diamidino-2-phenylindole (DAPI) fluorophores that predominantly stained the damaged cells. One-and two-photon fluorescence of DAPI fluorophores were, respectively, excited by an ultraviolet light source and the same near-infrared light source and were monitored to evaluate the cell viability during near-infrared pulsed laser irradiation. We found lower uptake of DAPI fluorophores into HeLa cells during the multifocus excitation compared with the single- focus excitation scheme in both the one- and the two-photon fluorescence examinations. This indicates a reduction of photo-induced cell damage in the multifocus excitation. Our findings suggested that the multifocus excitation scheme is expected to be suitable for CARS microscopy in terms of minimal invasiveness.

Link information
DOI
https://doi.org/10.1155/2017/5725340
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000413048800001&DestApp=WOS_CPL
ID information
  • DOI : 10.1155/2017/5725340
  • ISSN : 2314-4920
  • eISSN : 2314-4939
  • Web of Science ID : WOS:000413048800001

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