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Proceedings Paper

Development of tyrosinase-based reporter genes for preclinical photoacoustic imaging of mesenchymal stem cells
Author(s): Julia Märk; Karen Ruschke; Hakan Dortay; Isabelle Schreiber; Andrea Sass; Taimoor Qazi; Matthias Pumberger; Jan Laufer
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Paper Abstract

The capability to image stem cells in vivo in small animal models over extended periods of time is important to furthering our understanding of the processes involved in tissue regeneration. Photoacoustic imaging is suited to this application as it can provide high resolution (tens of microns) absorption-based images of superficial tissues (cm depths). However, stem cells are rare, highly migratory, and can divide into more specialised cells. Genetic labelling strategies are therefore advantageous for their visualisation. In this study, methods for the transfection and viral transduction of mesenchymal stem cells with reporter genes for the co-expression of tyrosinase and a fluorescent protein (mCherry). Initial photoacoustic imaging experiments of tyrosinase expressing cells in small animal models of tissue regeneration were also conducted. Lentiviral transduction methods were shown to result in stable expression of tyrosinase and mCherry in mesenchymal stem cells. The results suggest that photoacoustic imaging using reporter genes is suitable for the study of stem cell driven tissue regeneration in small animals.

Paper Details

Date Published: 3 March 2014
PDF: 5 pages
Proc. SPIE 8943, Photons Plus Ultrasound: Imaging and Sensing 2014, 89433Z (3 March 2014); doi: 10.1117/12.2039260
Show Author Affiliations
Julia Märk, Technische Univ. Berlin (Germany)
Karen Ruschke, Freie Univ. Berlin (Germany)
Hakan Dortay, Technische Univ. Berlin (Germany)
Isabelle Schreiber, Freie Univ. Berlin (Germany)
Andrea Sass, Charité Universitätsmedizin Berlin (Germany)
Taimoor Qazi, Charité Universitätsmedizin Berlin (Germany)
Matthias Pumberger, Charité Universitätsmedizin Berlin (Germany)
Jan Laufer, Technische Univ. Berlin (Germany)
Charité Universitätsmedizin Berlin (Germany)

Published in SPIE Proceedings Vol. 8943:
Photons Plus Ultrasound: Imaging and Sensing 2014
Alexander A. Oraevsky; Lihong V. Wang, Editor(s)

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