Related Experiment Video
Updated: Mar 24, 2026
Generation and Labeling of Murine Bone Marrow-derived Dendritic Cells with Qdot Nanocrystals for Tracking Studies
Published on: June 2, 2011
Effects of Quantum Dot Labeling on Endothelial Progenitor Cell Function and Viability
Matyas Molnar1, Peter Friberg2, Ying Fu3
1Department of Molecular and Clinical Medicine/Clinical Physiology, The Sahlgrenska Academy and University Hospital, University of Gothenburg, Gothenburg, Sweden; †Department of Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, Stockholm, Sweden.
Quantum dots (QDs) effectively label endothelial progenitor cells (EPCs) for tracking. QD labeling does not impact EPC viability or function, making them suitable for cell therapy research.
Area of Science:
- Biomedical Engineering
- Cell Biology
- Nanotechnology
Background:
- Endothelial progenitor cells (EPCs) are crucial for repairing damaged blood vessels.
- In vivo tracking of EPCs is vital for advancing EPC-based cell therapies.
- Fluorescent quantum dots (QDs) offer bright, photostable imaging but require safety validation for cell labeling.
Purpose of the Study:
- To assess the impact of quantum dot (QD) labeling on the viability and function of endothelial progenitor cells (EPCs).
- To determine the suitability of carboxyl-coated QD705 for labeling EPCs in the context of cell therapy research.
Main Methods:
- Rat bone marrow-derived EPCs were cultured and characterized.
- EPCs were labeled with near-infrared-emitting, carboxyl-coated QDs (8 nM) for 24 hours.
- Cell viability was assessed using the WST-1 assay; cell function was evaluated by capillary tube formation and migration assays.
Main Results:
- QD labeling efficiency exceeded 97%.
- QD-labeled EPCs showed no significant difference in viability compared to control cells.
- EPC function, including capillary tube formation and migration, remained unaffected by QD labeling.
- A decrease in QD-positive cells over time was observed, attributed to EPC proliferation.
Conclusions:
- Carboxyl-coated QD705 is a safe and effective probe for labeling EPCs.
- QD labeling does not compromise EPC viability or critical cellular functions.
- QD-labeled EPCs show promise for in vivo tracking in cell therapy applications.
More Related Videos
08:13Visualizing Subcellular Localization of a Protein in the Heart Using Quantum Dots-Mediated Immuno-Labeling Followed by Transmission Electron Microscopy
Published on: September 16, 2022
11:39Identifying Cell Surface Markers of Primary Neural Stem and Progenitor Cells by Metabolic Labeling of Sialoglycan
Published on: September 7, 2019