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Spatiotemporally controlled release of growth factors (GFs) is critical for regenerative processes such as angiogenesis. A common strategy is to encapsulate the GF within hydrogels, with release being controlled via diffusion and/or gel degradation (i.e., hydrolysis and/or proteolysis). However, simple encapsulation strategies do not provide spatial or temporal control of GF delivery, especially non-invasive,...
Hydrogel scaffolds are used in tissue engineering as a delivery vehicle for regenerative growth factors. Spatiotemporal patterns of growth factor signaling are critical for tissue regeneration, yet most scaffolds afford limited control of growth factor release, especially after implantation. We previously found that acoustic droplet vaporization can control growth factor release from a fibrin scaffold...
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