Photoacoustic Monitoring of the Viability of Mesenchymal Stem Cells Labeled with Indocyanine Green - 28/01/19
pages | 6 |
Iconographies | 6 |
Vidéos | 0 |
Autres | 0 |
Graphical abstract |
Highlights |
• | ICG can be used as an MSC labeling probe for PA imaging. |
• | PA imaging of MSCs showed similarity between the PA intensity and the cell viability. |
• | PA imaging with ICG labeling is an alternative to detect MSCs viability non-invasively. |
Abstract |
Background |
Stem cell therapy has a huge potential to enhance the recovery of damaged tissues and organs. However, it has been reported that majority of implanted stem cells cannot survive after implantation. Therefore, noninvasive monitoring of stem cell viability is essential to estimate the efficacy of stem cell therapy. However, current imaging methods have disadvantages for monitoring of stem cell viability such as cost, penetration depth, and safety. To overcome the limitations, photoacoustic imaging well known for sufficient penetration depth, relatively low cost, and non-ionizing radiation can be a novel alternative assessment method of stem cell viability.
Methods |
In this study, indocyanine green was used as exogenous photoacoustic contrast agents to label mesenchymal stem cells. The photoacoustic signals were acquired before and after the cell death and quantified to monitor photoacoustic signal changes related to the cell viability.
Results |
The fluorescence intensity changes of ICG labeled MSCs corresponded to decrease of PA intensity after cell death. Furthermore, the PA imaging of MSCs showed similarity between the PA intensity and the cell viability.
Conclusion |
The experimental results imply the feasibility of noninvasive detection of stem cell viability during therapeutic procedures.
Le texte complet de cet article est disponible en PDF.Keywords : Photoacoustic imaging, Mesenchymal stem cells, Cell viability, Indocyanine green, Contrast agents
Plan
Vol 40 - N° 1
P. 45-50 - février 2019 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’achat d’article à l’unité est indisponible à l’heure actuelle.
Déjà abonné à cette revue ?