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Chantre, Christophe O; Gonzalez, Grant M; Ahn, Seungkuk; Cera, Luca; Campbell, Patrick H; Hoerstrup, Simon P; Parker, Kevin Kit
ACS applied materials & interfaces, 12/2019, Letnik: 11, Številka: 49Journal Article
Recent reports suggest the utility of extracellular matrix (ECM) molecules as raw components in scaffolding of engineered materials. However, rapid and tunable manufacturing of ECM molecules into fibrous structures remains poorly developed. Here we report on an immersion rotary jet-spinning (iRJS) method to show high-throughput manufacturing (up to ∼1 g/min) of hyaluronic acid (HA) and other ECM fiber scaffolds using different spinning conditions and postprocessing modifications. This system allowed control over a variety of scaffold material properties, which enabled the fabrication of highly porous (70–95%) and water-absorbent (swelling ratio ∼2000–6000%) HA scaffolds with soft-tissue mimetic mechanical properties (∼0.5–1.5 kPa). Tuning these scaffolds’ properties enabled the identification of porosity (∼95%) as a key facilitator for rapid and in-depth cellular ingress in vitro. We then demonstrated that porous HA scaffolds accelerated granulation tissue formation, neovascularization, and reepithelialization in vivo, altogether potentiating faster wound closure and tissue repair. Collectively, this scalable and versatile manufacturing approach enabled the fabrication of tunable ECM-mimetic nanofiber scaffolds that may provide an ideal first building block for the design of all-in-one healing materials.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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