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Chantre, Christophe O.; Campbell, Patrick H.; Golecki, Holly M.; Buganza, Adrian T.; Capulli, Andrew K.; Deravi, Leila F.; Dauth, Stephanie; Sheehy, Sean P.; Paten, Jeffrey A.; Gledhill, Karl; Doucet, Yanne S.; Abaci, Hasan E.; Ahn, Seungkuk; Pope, Benjamin D.; Ruberti, Jeffrey W.; Hoerstrup, Simon P.; Christiano, Angela M.; Parker, Kevin Kit
Biomaterials, 06/2018, Letnik: 166Journal Article
Wounds in the fetus can heal without scarring. Consequently, biomaterials that attempt to recapitulate the biophysical and biochemical properties of fetal skin have emerged as promising pro-regenerative strategies. The extracellular matrix (ECM) protein fibronectin (Fn) in particular is believed to play a crucial role in directing this regenerative phenotype. Accordingly, Fn has been implicated in numerous wound healing studies, yet remains untested in its fibrillar conformation as found in fetal skin. Here, we show that high extensional (∼1.2 ×105 s−1) and shear (∼3 ×105 s−1) strain rates in rotary jet spinning (RJS) can drive high throughput Fn fibrillogenesis (∼10 mL/min), thus producing nanofiber scaffolds that are used to effectively enhance wound healing. When tested on a full-thickness wound mouse model, Fn nanofiber dressings not only accelerated wound closure, but also significantly improved tissue restoration, recovering dermal and epidermal structures as well as skin appendages and adipose tissue. Together, these results suggest that bioprotein nanofiber fabrication via RJS could set a new paradigm for enhancing wound healing and may thus find use in a variety of regenerative medicine applications.
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