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Self-Organizing Tissue-Engineered Constructs in Collagen Hydrogels

  • Robert G. Gourdie (a1), Tereance A. Myers (a1), Alex McFadden (a2), Yin-xiong Li (a3) and Jay D. Potts (a2)...

Abstract

A novel self-organizing behavior of cellularized gels composed of collagen type 1 that may have utility for tissue engineering is described. Depending on the starting geometry of the tissue culture well, toroidal rings of cells or hollow spheroids were prompted to form autonomously when cells were seeded onto the top of gels and the gels released from attachment to the culture well 12 to 24 h after seeding. Cells within toroids assumed distinct patterns of alignment not seen in control gels in which cells had been mixed in. In control gels, cells formed complex three-dimensional arrangements and assumed relatively higher levels of heterogeneity in expression of the fibronectin splice variant ED-A—a marker of epithelial mesenchymal transformation. The tissue-like constructs resulting from this novel self-organizing behavior may have uses in wound healing and regenerative medicine, as well as building blocks for the iterative assembly of synthetic biological structures.

Copyright

Corresponding author

Corresponding author. E-mail: gourdier@musc.edu
Corresponding author. E-mail: jay.potts@uscmed.sc.edu

References

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Supplementary materials

Gourdie Supplementary Figure
Supplementary Figure 1. Examples in which LECs were seeded on top collagen gels and formed toroids

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Self-Organizing Tissue-Engineered Constructs in Collagen Hydrogels

  • Robert G. Gourdie (a1), Tereance A. Myers (a1), Alex McFadden (a2), Yin-xiong Li (a3) and Jay D. Potts (a2)...

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