Vascular Endothelial Growth Factor Sequestration Enhances In Vivo Cartilage Formation

Medeiros Da Cunha, Carolina M. and Perugini, Valeria and Bernegger, Petra and Centola, Matteo and Barbero, Andrea and Guildford, Anna L. and Santin, Matteo and Banfi, Andrea and Martin, Ivan and Marsano, Anna. (2017) Vascular Endothelial Growth Factor Sequestration Enhances In Vivo Cartilage Formation. International journal of molecular sciences, 18 (11). p. 2478.

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Autologous chondrocyte transplantation for cartilage repair still has unsatisfactory clinical outcomes because of inter-donor variability and poor cartilage quality formation. Re-differentiation of monolayer-expanded human chondrocytes is not easy in the absence of potent morphogens. The Vascular Endothelial Growth Factor (VEGF) plays a master role in angiogenesis and in negatively regulating cartilage growth by stimulating vascular invasion and ossification. Therefore, we hypothesized that its sole microenvironmental blockade by either VEGF sequestration by soluble VEGF receptor-2 (Flk-1) or by antiangiogenic hyperbranched peptides could improve chondrogenesis of expanded human nasal chondrocytes (NC) freshly seeded on collagen scaffolds. Chondrogenesis of several NC donors was assessed either in vitro or ectopically in nude mice. VEGF blockade appeared not to affect NC in vitro differentiation, whereas it efficiently inhibited blood vessel ingrowth in vivo. After 8 weeks, in vivo glycosaminoglycan deposition was approximately two-fold higher when antiangiogenic approaches were used, as compared to the control group. Our data indicates that the inhibition of VEGF signaling, independently of the specific implementation mode, has profound effects on in vivo NC chondrogenesis, even in the absence of chondroinductive signals during prior culture or at the implantation site.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedizin > Department of Biomedicine, University Hospital Basel > Cell and Gene Therapy (Banfi)
UniBasel Contributors:Banfi, Andrea
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Molecular Diversity Preservation International (MDPI)
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:25 May 2018 13:18
Deposited On:19 Mar 2018 14:09

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