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This review synthesizes existing research on the multilayered defense system of the skin, highlighting how physical, chemical, immune, and microbial barriers work together to maintain skin health, with disruptions in one often leading to broader barrier dysfunctions.

In this study, researchers identified 47 proteins associated with male pattern baldness severity and prioritized five candidate genes, including druggable CD38, suggesting new non-hormonal targets for therapeutic development.

This narrative review concluded that facial aging involves complex anatomical changes that require multimodal rejuvenation approaches, integrating fillers, collagen stimulators, botulinum toxin, and energy-based devices for effective results, while emphasizing the need for scientific evidence and patient safety in aesthetic treatments.

This review suggests that allogenic adipose stem cell and extracellular matrix transplants may be safe and effective for various medical conditions, based on available studies.

This review explores current knowledge on fibroblast lineage specification and its impact on scar-free wound healing, noting that early fetal skin fibroblasts support regeneration, while later developmental shifts lead to fibrosis, highlighting potential strategies to reprogram adult fibroblasts for regenerative repair.

In this study, FN-based fiber scaffolds designed using Rotary Jet-Spinning were shown to enhance wound healing and reduce scar formation in a mouse model, suggesting potential for regenerating healthy skin structure.

Schwann cell and M2 macrophage interactions contribute to keloid growth by increasing matrix deposition.

This review discusses how research on keratin biology has enhanced the understanding of epidermolysis bullosa simplex and indicates potential new therapeutic approaches, but it presents no new experimental results.

This review discusses the mechanisms of wound healing and excessive scarring, highlighting the importance of understanding these processes for developing new therapies to prevent fibrotic scarring in large skin wounds.

In this review, the authors explored the diverse roles of fibroblasts in wound healing, suggesting that understanding their complexity could lead to better insights into wound pathologies and the development of new treatments.

This study found that the absence of laminin α5 in adult mice's epidermal basement membrane led to keratinocyte hyperproliferation and immune cell changes, affecting hair follicle development through altered growth factor expression.

This study found that Wnt7a-containing conditioned medium from UC-MSCs can accelerate wound healing and promote hair follicle regeneration by enhancing specific cellular functions in the wound microenvironment.

This paper explores the relationship between the dermal extracellular matrix and cutaneous malignant melanoma, suggesting that ECM involvement may play a key role in the cancer's growth, invasiveness, and initial metastasis.

In this study, the researchers developed a cellulose nanofiber-based scaffold containing sitagliptin and zinc sulfide nanoparticles, which promoted scarless healing and hair follicle regeneration in rats by targeting DPP4+ fibroblasts, suggesting a novel approach for improved wound healing and skin regeneration.

This study observed that a CARASIL mouse model demonstrated abnormal behavior, vascular and cellular changes, and upregulation of the TGF-β/Smad signaling pathway, indicating its potential involvement in CARASIL pathogenesis.

This review found that lip aging differs significantly from facial aging and suggests focusing on distinct anti-aging strategies for lips, considering gender differences and unique physiological characteristics.

This chapter reviews the biology and regulatory mechanisms of epidermal stem cells, emphasizing their heterogeneity and roles in skin homeostasis, cancer, and aging, without reporting new findings.

This review reports that combining adipose-derived stem cells with decellularized extracellular matrix enhances tissue repair by improving scaffold biological activity and promoting angiogenesis, integration, and functional regeneration across various tissues, while addressing challenges in traditional transplantation methods.

The researchers reported that basement membrane heterogeneity, especially laminin α5 composition, plays a critical role in distinct inter-tissue interactions and hair cycle regulation in mouse hair follicles.

In this study, researchers found that inhibiting YAP signaling in skin wounds leads to regenerative repair with active Trps1 and Wnt signaling, contrasting the typical fibrotic scarring process.

This review discusses the role of tissue mechanics and extracellular matrix in skin aging processes and highlights potential therapeutic strategies, but reports no new clinical results.

This study by Bansaccal et al. found that skin with higher levels of type I collagen density and elasticity in the dermis can inhibit basal cell carcinoma development and spread by acting as a natural barrier against cell reprogramming in mice.

This paper explores the complex immune processes and cellular diversity that enable the skin to heal and resist invasion, and highlights its potential as a model for studying regeneration.

This review discusses the role of hair follicle stem cells as active signaling centers in skin homeostasis, highlighting recent advancements and reporting no new clinical results.

This review discusses human hair follicle development and highlights the potential of creating human in vitro models and skin substitutes with hair follicles, reporting no new clinical results.

This study of Liaoning cashmere goats identified nine keratin proteins as markers of the secondary hair follicle cycle, providing insights that may enhance cashmere quality and production.

This study identified 2574 differentially expressed genes in the hair follicles of Wan strain Angora rabbits, suggesting that these genes may influence wool fiber diameter and quality.

This study used TMT-based quantitative proteomics to analyze the development of secondary hair follicles in fetal sheep, revealing increased follicle density and key proteins involved, such as COL1A1 and THBS4, indicating their potential role in wool quality traits.

This study found that sustained ERK activity during tissue regeneration in spiny mice is linked to fibroblast growth factor and ErbB signaling, while inhibiting ERK shifted regeneration toward scarring.

In this study, a new topical formulation containing amine-activated carboxymethyl chitosan and hydrolyzed extracellular matrix showed promising results in a mouse model by reducing oxidative stress, inflammation, and promoting hair regeneration, potentially offering an alternative treatment for inflammatory hair loss.