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In this study, aged mice showed better regenerative skin outcomes than young mice, linked to a specific fibroblast subpopulation and enhanced signaling interactions that promote regeneration. EREG treatment improved young mice's skin regeneration, suggesting potential for scarless therapies.

This study found that toll-like receptor 9 plays a previously unrecognized role in sensing skin injury and influencing tissue repair and regeneration in adult mice by modulating γδT cell migration.

This study found that tissue damage in adult mice triggers the release of mitochondrial DNA, which activates the TLR9 pathway and influences hair regeneration by recruiting gamma delta T cells, ultimately affecting healing outcomes such as fibrosis.

African spiny mice can regenerate skin and hair after wounds due to specific tissue mechanics.

This review summarizes recent findings on how Wnt signaling proteins play crucial roles in the cutaneous wound healing process but reports no new clinical results.

This study found that manipulating Wnt signaling pathways in cutaneous wounds can induce skin structures resembling regeneration, suggesting a potential role for Wnt signals in restoring skin architecture during wound healing.

This case report describes an 80-year-old patient whose scalp wound healed by secondary intention, with unexpected hair regrowth observed at 180 days, suggesting hair neogenesis is possible even in older adults.

In a study using a mouse model of diabetes, chitosan-based hydrogels increased healing markers and improved wound closure and tissue repair compared to untreated wounds, but human efficacy needs further validation.

This study found that the transcription factor Gata6 regulates the sebaceous duct lineage identity and plays a crucial role in epidermal wound healing by enabling dedifferentiation and broader lineage capabilities in post-mitotic cells.

In this animal study, the researchers found that DPP4 plays a crucial role in scar formation and wound-induced hair follicle neogenesis in mice, impacting regenerative repair.

This study found that deoxyshikonin promoted wound healing in diabetic mice, suggesting it may contribute to wound repair in patients with diabetes.

This study observed that tissue-engineered skin, using VEGF165 gene-modified cells embedded in astragalus polysaccharide-containing 3D printed scaffolds, enhanced early vascularization, and collagen and hair follicle regeneration, leading to improved skin repair in nude mice with full skin defects.

This study observed distinct sex differences in hair growth cycles and regeneration in C3H/He mice, noting that females regenerated hair faster after adhesive material application, whereas males were more reliant on macrophage activity for this process.

This study identified a new role for IL-4Ra-induced oxidative metabolism in wound macrophages, essential for balancing inflammatory response and promoting pro-fibrotic repair, suggesting a target for fibrosis prevention.

This study found that CD80 expression in wound-activated hair follicle stem cells induces Foxp3 expression in effector T cells, facilitating wound repair by converting them into regulatory T cells.

This study using a mouse model reports that CuATSM treatment accelerates skin wound healing and reduces scar formation, with effects possibly mediated via the ferroptosis-induced Hippo/YAP signaling pathway and macrophage polarization, suggesting CuATSM as a potential therapy for scarless wound healing in clinical settings.

This study demonstrated that a novel hydrogel combining extracellular vesicles from chemically induced mammary epithelial cells with chitosan significantly enhanced skin wound healing in a rat model.

In animal models, this study reported that a wound dressing combining quaternized chitin and silk fibroin significantly enhanced vascular reconstruction and hair follicle regeneration, approaching normal tissue levels.

This study found that the chromatin remodeler Brg1 plays a crucial role in hair follicle maintenance and epidermal repair by regulating the Shh signaling pathway and forming a positive feedback loop.

This narrative piece considers how epigenetic factors may influence the processes of skin wound healing, including hair follicle formation, but it presents no new experimental results.

This study found that manipulating both gene expression and matrix stiffness in mice can alter hair regeneration after skin wounding, highlighting key factors in regenerative biology.

This review updates the protective effects and molecular mechanisms of melatonin against ultraviolet-induced damage in human skin, reporting no new clinical findings.

This study found that a single X-radiation treatment in rat skin reduced collagen concentration over multiple hair-cycles by diminishing the fibroblasts' capacity for proline hydroxylation, potentially contributing to delayed skin lesions.

This study found that conditioned media from human amniotic fluid-derived stem cells may enhance skin regeneration by promoting cell proliferation and migration, and by modulating gene expressions altered by UV irradiation.

This study found that natural tea trichomes accelerated wound healing and provided photoprotection in a mouse model, suggesting potential as a sustainable biomaterial for skin repair due to its antioxidant properties and ability to enhance tissue regeneration and reduce UV-induced skin damage.

This review discusses advances and challenges in skin tissue engineering, focusing on developing 3D constructs for functional skin substitutes, and reports no new clinical results.

This study suggests that the exercise-induced cytokine IL-15 can improve wound healing in aged skin, along with previously reported benefits on skin structure and mitochondrial function.

This article discusses stem cell-based therapies for wound healing and highlights their potential for tissue repair and regeneration, without presenting new clinical results.

This research proposes a comprehensive "four-dimensional technology toolbox" for reprogramming wound-repair cells, aiming to treat chronic non-healing wounds like diabetic foot ulcers by altering fibroblasts, keratinocytes, and macrophages to regenerative phenotypes, and addressing clinical translation challenges.

This review highlights exosomes as a promising treatment for skin damage from UV light, infrared radiation, burns, and disorders due to their anti-inflammatory properties, ability to induce macrophage polarization, and acceleration of skin repair and regeneration.