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- W4387604885 abstract "Abstract Organoids have attracted extensive attention in the field of hair follicle (HF) tissue engineering and regeneration. However, HF organoid implantation faces a number of difficulties, such as low viability ratios, invasive trauma, and complicated procedures. To overcome these issues, a convenient and minimally invasive delivery approach with high efficiency and cell viability is required. Here, HF organoid‐loaded methacrylated gelatin‐cryomicroneedles (GelMA‐cryoMNs) that are capable of efficient transdermal delivery and can maintain the viability of the embedded organoids are developed. The GelMA‐cryoMNs are fabricated by a stepwise cryogenic molding process using a balanced ratio of cryopreservation agents and GelMA hydrogel. They can be inserted easily into porcine skin and melted without leaving residue after delivering the organoids. In vitro and in vivo, organoids delivered by the cryoMNs retain cell viability, self‐assembly, and differentiation ability. In mice, HF organoid‐loaded GelMA‐cryoMNs are delivered to the superficial dermis, resulting in subsequent HF development and the formation of an array of biomimetic hair tufts that broke through the skin surface. A promising strategy is provided here for biomimetic hair neogeneration that benefits from minimal invasion, low cost, and simple fabrication. The GelMA‐cryoMNs developed here could also have broader applications in tissue engineering and organ regeneration." @default.
- W4387604885 created "2023-10-14" @default.
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- W4387604885 date "2023-10-12" @default.
- W4387604885 modified "2023-10-14" @default.
- W4387604885 title "Organoid‐Loaded Cryomicroneedles for Biomimic Hair Regeneration" @default.
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- W4387604885 doi "https://doi.org/10.1002/adfm.202304950" @default.
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