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This source states that an image was mistakenly misused in the supplementary materials but clarifies that this does not impact the study's main findings. The authors have corrected the error for accuracy and transparency.

This study found that constitutively active Stat3 in transgenic mice led to reduced keratinocyte stem cell populations in hair follicles, altering stem/progenitor cell dynamics and homeostasis.

In this review, researchers concluded that chronic inflammation perpetually activates stem cells, allowing DNA damage accumulation and potentially promoting cancer development and metastasis by converting stem cells into cancer cells.

This study found that bacterially induced metabolic changes in stem cells can enhance skin and hair follicle regeneration in both mice and humans, suggesting potential strategies for improving recovery after injury.

This study identified that bacterially-induced metabolic changes in keratinocytes enhance skin and hair follicle regeneration, suggesting that modifying skin microbiome interactions may improve wound healing.

This review discusses the formation and maintenance of hair follicles through dynamic cellular changes and signaling pathways, presenting a comprehensive overview but providing no new experimental findings.

This study reports a case where a 13-year-old boy's hair texture changed to resemble his early childhood hair after regrowth from alopecia areata, with potential causes remaining uncertain.

This review discusses the multiple factors contributing to skin aging, including cellular changes and environmental influences, and highlights its recognition as a disease with significant implications beyond cosmetic concerns, without reporting new research results.

The TGF-β family helps control how cells change and move, affecting skin, hair, and organ development.

This study found that a newly identified mutation in the hairless gene in mice led to decreased Hr mRNA levels and changes in gene expression related to hair follicle development.

This study examined dermal papilla cells from hair follicles, finding that gene expression changes linked to wound healing and stem cell activity align with hair follicle regression, which could inform strategies for hair growth and skin rejuvenation.

This review discusses changes in hair follicle characteristics and stem cell dynamics as indicators of aging in mice, noting increased occurrences of white hairs and curved hair follicles at older ages.

This study found that in atrophic acne scars, inflammation infiltrates the pilosebaceous unit over time, affecting resident stem cells and hindering the normal regeneration of the epidermis and adnexal structures, leading to scarring.

This study used transgenic mice to show that disrupting TGF-β signaling in K14+ progenitor cells led to increased stem cell proliferation in the tongue.

In a mouse model, this study found that exposure to PM2.5 leads to significant postpartum hair loss, apparent via morphological changes and elevated markers of inflammation, apoptosis, and fibrosis, potentially exacerbated by changes in hormone receptors and stem cell populations.

This study reports that corneal transient amplifying cells can be reprogrammed into epidermal cells capable of forming hair follicles in response to embryonic dermis signals.

This study found that mice with a homozygous knockout of the Ten1 gene, developed through CRISPR-Cas9-mediated exon 3 deletion, exhibited telomere shortening and symptoms consistent with accelerated aging, such as reduced lifespan, skin changes, aplastic anemia, and cerebellar hypoplasia.

This study found that loss of the Ptch2 receptor in mice leads to increased incisor growth and enhanced mesenchymal stem cell differentiation, highlighting Ptch2's role in organ regenerative potential.

This review discusses how aging affects hair follicle stem cells and their environment, contributing to hair loss, and explores strategies to promote hair regrowth, but reports no new results.

This study reported that stress can induce hair graying in mice through noradrenaline-mediated depletion of melanocyte stem cells in hair follicles, providing a mechanism that connects stress to hair color changes.

In this research, scientists developed a compression therapy model using immobilized mice, successfully analyzing skin without causing injury, and observed increased epidermal thickness and changes in adipocyte volume, with no increase in DNA damage markers.

This study in adult male albino rats reported that human umbilical cord blood-derived mesenchymal stem cells were more effective than minoxidil in promoting hair growth for androgenic alopecia, observing superior outcomes in hair follicle metrics.

This study suggests that Elf5 plays a crucial role in regulating stem cell processes involved in skin and hair follicle development and regeneration, impacting cell proliferation and differentiation.

This source reviews advancements in microneedle-based cosmeceutical delivery, discussing new technologies and highlighting a burgeoning area of research involving microneedling combined with stem cell delivery for anti-aging, without finding measurable changes in skin barrier function or appearance during the study period.

This study found that the vitamin D receptor is essential for the self-renewal, migration, and differentiation of epidermal stem cells during skin wound healing in mice.

This study found that the dermal papilla of the hair follicle regulates stem cell quiescence and regeneration by modulating Shh and Wnt signaling pathways, highlighting the importance of signaling cross talk in regeneration.

Discoid lupus erythematosus involves immune activation and fibrosis around hair follicles, with shared pathways across humans, dogs, and mice, suggesting potential treatments for both humans and animals.

Aging skin is affected by inflammation, reduced stem cell function, and slower wound healing.

This study found that Pdgfα signaling is crucial for maintaining dermal adipose tissue in mice by initiating dermal adipocyte stem cell proliferation, with implications for age-related skin defects.

This review discusses the clonal or polyclonal nature of skin carcinomas and the stem cell origins of basal and squamous cell carcinomas but presents no new research findings.