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- W4366282695 abstract "Abstract UV‐cured collagen‐based hydrogels hold promise in skeletal muscle regeneration due to their soft elastic properties and porous architecture. However, the complex triple helix conformation of collagen and environmental conditions, i.e., molecular oxygen, pose risks to reaction controllability, wet‐state integrity, and reproducibility. To address this challenge, a photoclick hydrogel platform is presented through an oxygen‐insensitive thiol‐ene reaction between 2‐iminothiolane (2IT)‐functionalized type I collagen and multiarm, nonhomopolymerizable norbornene‐terminated polyethylene glycol (PEG). UV‐induced network formation is demonstrated by oscillatory time sweeps on the reacting thiol‐ene mixture, so that significantly increased storage moduli are measured and adjusted depending on the photoinitiator concentration. Variations in PEG functionality (4‐arm and 8‐arm) and PEG content generate hydrogels with skeletal muscle native stiffness ( E c = 1.3 ± 0.2‒11.5 ± 0.9 kPa), diffusion‐controlled swelling behavior and erosion‐driven degradability. In vitro, no cytotoxic effect is detected on C2C12 murine myoblasts, while myogenic differentiation is successfully accomplished on hydrogel‐seeded cells in then low serum culture medium. In vivo, 7 d subcutaneous implantation of selected thiol‐ene hydrogel in rats reveal higher cell infiltration, blood vessel formation, and denser tissue interface compared to a clinical gold standard collagen matrix (Mucograft, a trademark of Geistlich Biomaterials). These results, therefore, support the applicability and further development of this hydrogel platform for skeletal muscle regeneration." @default.
- W4366282695 created "2023-04-20" @default.
- W4366282695 creator A5034588702 @default.
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- W4366282695 date "2023-04-18" @default.
- W4366282695 modified "2023-10-17" @default.
- W4366282695 title "A Photoclick Thiol‐Ene Collagen‐Based Hydrogel Platform for Skeletal Muscle Tissue Engineering" @default.
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- W4366282695 doi "https://doi.org/10.1002/mame.202300029" @default.
- W4366282695 hasPublicationYear "2023" @default.
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