Related Experiment Video
Updated: Dec 12, 2025
07:49
Stepwise Cell Seeding on Tessellated Scaffolds to Study Sprouting Blood Vessels
Published on: January 14, 2021
3.8K
Cell seeding accelerates the vascularization of tissue engineering constructs in hypertensive mice
Maximilian E H Wagner1, Andreas Kampmann2, Kathrin Schumann-Moor1
1Division of Cranio-Maxillo-Facial and Oral Surgery, University Hospital Zurich, University of Zurich, Frauenklinikstrasse 24, 8091, Zurich, Switzerland.
Summary
Cell-seeded scaffolds promote blood vessel growth for tissue engineering. Hypertensive mice showed reduced vessel formation, highlighting the need for tailored approaches in regenerative medicine for these patients.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Vascular Biology
Background:
- Successful tissue engineering relies on rapid blood vessel ingrowth into transplanted constructs.
- Diseases like hypertension impair the body's natural ability to form new blood vessels (neoangiogenesis).
- Poly-L-lactide-co-glycolide scaffolds are utilized in tissue engineering applications.
Purpose of the Study:
- To investigate the efficacy of cell-seeded poly-L-lactide-co-glycolide scaffolds in promoting neoangiogenesis in both hypertensive and nonhypertensive mice.
- To compare the microvascularization of cell-seeded scaffolds versus control scaffolds in vivo.
- To assess the impact of hypertension on scaffold-mediated vascularization.
Main Methods:
- Poly-L-lactide-co-glycolide scaffolds were prepared, some collagen-coated, and seeded with osteoblast-like or mesenchymal stem cells.
- Scaffolds were implanted into dorsal skinfold chambers of hypertensive (BPH/2J) and nonhypertensive (BPN/3J) mice.
- Intravital fluorescence microscopy was used to quantify inflammation and microvessel density over 14 days.
Main Results:
- Cell-seeded scaffolds demonstrated significantly increased microvascular densities compared to control scaffolds at day 14.
- Hypertensive mice exhibited reduced neoangiogenesis compared to nonhypertensive mice.
- A generally weak inflammatory response was observed across all experimental groups.
Conclusions:
- Seeding scaffolds with organ-specific or pluripotent cells is a promising strategy for tissue engineering, even in hypertensive subjects.
- Hypertension poses a challenge to scaffold-induced vascularization, necessitating further research for optimization.
- This study provides valuable insights into the potential of cell-seeded scaffolds for regenerative medicine in compromised vascular environments.
