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In vivo X-ray elemental imaging of single cell model organisms manipulated by laser-based optical tweezers
Vergucht, E.; Brans, T.; Beunis, F.; Garrevoet, J.; De Rijcke, M.; Bauters, S.; Vandegehuchte, M.; Van Nieuwenhove, I.; Janssen, C.; Burghammer, M.; Vincze, L. (2015). In vivo X-ray elemental imaging of single cell model organisms manipulated by laser-based optical tweezers. NPG Scientific Reports 5: 9049. https://dx.doi.org/10.1038/srep09049
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, meer
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  • De Rijcke, M., meer
  • Bauters, S., meer
  • Vandegehuchte, M., meer
  • Van Nieuwenhove, I.
Abstract
    We report on a radically new elemental imaging approach for the analysis of biological model organisms and single cells in their natural, in vivo state. The methodology combines optical tweezers (OT) technology for non-contact, laser-based sample manipulation with synchrotron radiation confocal X-ray fluorescence (XRF) microimaging for the first time. The main objective of this work is to establish a new method for in vivo elemental imaging in a two-dimensional (2D) projection mode in free-standing biological microorganisms or single cells, present in their aqueous environment. Using the model organism Scrippsiella trochoidea, a first proof of principle experiment at beamline ID13 of the European Synchrotron Radiation Facility (ESRF) demonstrates the feasibility of the OT XRF methodology, which is applied to study mixture toxicity of Cu-Ni and Cu-Zn as a result of elevated exposure. We expect that the new OT XRF methodology will significantly contribute to the new trend of investigating microorganisms at the cellular level with added in vivo capability.
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