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This article reviews the stages and regulation of the hair cycle, highlighting molecular regulators involved, but it does not present new research findings.

This review summarizes the major events and regulators of the hair cycle in mammals but reports no new experimental results; it emphasizes the complex regulation of stem cell activation and differentiation during hair growth.

In this study, the researchers reported that Notch/CSL signaling is crucial for hair follicle differentiation, with Wnt5a signaling and FoxN1 acting as mediators in mice.

This review explores the potential of using genetically-manipulated stem cells as both therapeutic agents and gene delivery vehicles for enhanced wound regeneration, but it reports no new clinical results.

This study found that upper wound fibroblasts are crucial for hair follicle regeneration during wound healing and suggests that these cells, along with papillary fibroblasts, migrate within the wound.

This research discusses a novel imaging approach in live mice to study stem cell and niche interactions in tissue homeostasis and reports no new results.

This study found that distinct keratin profiles enabled the evaluation of epithelial differentiation in human hair follicles, with mesenchymal cells playing a critical role in epidermoid differentiation of follicular cells.

This study observed that in mouse hair follicles, enzymes Aldh1a2 and Aldh1a3 have distinct expression patterns that suggest they are involved in different signaling pathways during the hair cycle.

This study concluded that the new subfractionation culturing method generates highly homogeneous adipose-derived stem cells with enhanced mitogenic, paracrine, and hair growth-promoting effects compared to traditional isolation methods.

This study found that CD34+ cells from adipose tissue may enhance hair morphogenesis and participate in blood vessel formation in reconstituted skin tissues of mice.

This study found that mesenchymal cell processes from the dermal papilla contact epithelial hair matrix cells through gaps in the basal lamina during hair matrix cell differentiation in mouse vibrissa follicles.

In this study, topical quercetin was found to stimulate hair follicle growth and promote microvascular regrowth in mice, suggesting its potential for hair regrowth strategies.

This study observed that storing hair follicle micrografts significantly decreased the expression of certain key genes in the dermal papilla, potentially affecting hair follicle cycling during preparation and storage.

This paper explores cell kinetics in human hair follicles, focusing on the proliferation rates of keratinocytes and dermal papilla cells, but provides no new experimental findings.

This study found that YAP1 localization and expression patterns in human skin xenografts resembled pathological conditions, suggesting that YAP1 may be a potential target for treating skin pathologies.

This study demonstrated that transplanting in vitro differentiated Wharton's jelly mesenchymal stem cells on acellular dermal grafts led to complete skin regeneration with appendages in a mouse model of full-thickness wounds.

Wound healing is a complex process involving different cells and stages, leading to scar tissue formation and strength increase over time.

This study investigated optimizing the differentiation process of UC-MSCs into dermal papilla-like tissues for potential hair follicle therapy and highlighted the potential to reduce associated costs by evaluating cell density and growth factors.

This study found that hair follicle-derived dermal stem cells and bone marrow mesenchymal stem cells have similar growth, differentiation capabilities, and surface marker expressions, suggesting hair follicles could be accessible sources for mesenchymal stem cells.

This study observed that in vitro cocultures of hair follicle cells with dermal fibroblasts or hair papilla cells enhanced proliferation and differentiation of outer root sheath cells but did not mimic hair-type differentiation.

This study found that a hydrogel containing icariin enhanced wound healing and hair-follicle regeneration in vivo by promoting M2 macrophage polarization and modulating the BMP pathway, with treated skin defects showing improved recovery and new hair follicle development compared to untreated defects.

This review examines adipose-derived stem cells as a promising therapy for alopecia but reports no new clinical results, discussing their potential mechanisms and the challenges faced in treatment development.

In this study, metal-organic frameworks modified with stearic acid were used to deliver cardamonin to hair follicles, significantly promoting hair growth and cell proliferation in testosterone-challenged mice, suggesting potential benefits for androgenic alopecia treatment.

This study found that combining the natural product cedrol with minoxidil can improve the treatment of androgenetic alopecia by reducing the minoxidil dose needed, while a new nanocarrier system enhances drug delivery and effectiveness at hair follicles.

In this study using live mice, researchers observed that during hair follicle regression, apoptosis in basal cells may propagate by triggering neighboring cells, potentially regulated by a gradient of pro-survival signals from stem cells, and proposed a testable mechanism to further explore this process.

This case study describes an unusual instance of separate trichoadenoma and melanocytic naevi occurring simultaneously on the face, with the cause of their association remaining uncertain.

This study in live mice suggests that hair follicle regression involves apoptosis propagation towards stem cells, potentially slowed by a protective signal from the stem cells themselves.

This study found that Bone morphogenetic proteins (BMPs) play a crucial role in dermal papilla cells' ability to induce hair follicle stem cell differentiation, and that androgens may impair this process by downregulating BMPs.

This study explored the epigenetic mechanisms of dermal fibroblast progenitor differentiation and found that the repressive chromatin profile from H3K27me3 prevents these progenitors from reforming skin in allograft assays, despite their multipotent potential.

This study used cashmere goats to map the differentiation of dermal papilla stem cells and identified key intermediate cell states involved in hair follicle regeneration.