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Updated: Sep 21, 2025

Dendrimer-based Uneven Nanopatterns to Locally Control Surface Adhesiveness: A Method to Direct Chondrogenic Differentiation
Published on: January 20, 2018
Nanoscale ligand density modulates gap junction intercellular communication of cell condensates during chondrogenesis
Ignasi Casanellas1,2,3, Anna Lagunas1,3, Yolanda Vida4,5
1Institute for Bioengineering of Catalonia (IBEC), Barcelona Institute of Science &Technology (BIST). c/Baldiri Reixac, 10-12, Barcelona, 08028, Spain.
Abstract:
Aim: To unveil the influence of cell-matrix adhesions in the establishment of gap junction intercellular communication (GJIC) during cell condensation in chondrogenesis. Materials & methods: Previously developed nanopatterns of the cell adhesive ligand arginine-glycine-aspartic acid were used as cell culture substrates to control cell adhesion at the nanoscale. In vitro chondrogenesis of mesenchymal stem cells was conducted on the nanopatterns. Cohesion and GJIC were evaluated in cell condensates. Results: Mechanical stability and GJIC are enhanced by a nanopattern configuration in which 90% of the surface area presents adhesion sites separated less than 70 nm, thus providing an onset for cell signaling. Conclusion: Cell-matrix adhesions regulate GJIC of mesenchymal cell condensates during in vitro chondrogenesis from a threshold configuration at the nanoscale.
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