April 2023 in “Journal of Investigative Dermatology” In this study, researchers developed a mouse model of scarring alopecia and observed significant reductions in CD200R expression in affected skin, potentially linking this signaling pathway to immune attacks on hair follicles and suggesting new treatment targets for scarring hair loss.
October 2009 in “Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature” This study demonstrates that using a K15 promoter-driven GFP labeling technique allows for the identification and characterization of epithelial stem cells in adult human hair follicles.
44 citations
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April 2012 in “American Journal of Clinical Dermatology” Scarring alopecias are complex hair loss disorders that require early treatment to prevent permanent hair loss.
62 citations
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November 2009 in “Aging Cell” Hedgehog signaling helps keep hair follicle stem cells the same in both young and old human skin.
3 citations
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April 2011 in “Expert Review of Dermatology” This review examines a study showing that the balding scalp in men with androgenetic alopecia retains stem cells but lacks certain progenitor cells, suggesting new targets for future therapies; it reports no clinical results.
86 citations
,
June 2017 in “Stem cell investigation” This study reported that using human follicle stem cells isolated from hair bulge areas increased hair density by about 29% over baseline in patients with androgenetic alopecia, with significant improvements observed 23 weeks after the last treatment.
14 citations
,
January 2011 in “Journal of Cutaneous Pathology” This study found that CK15 is an unreliable marker for assessing bulge zone integrity in cicatricial alopecia follicles due to its altered expression in diseased conditions.
10 citations
,
December 2011 in “Cell Transplantation” This study suggests that cultured human hair follicle cells can potentially recreate epidermis and produce bioengineered hair follicles in a GMP cell factory for regenerative therapy in alopecia.
9 citations
,
July 2013 in “Experimental Dermatology” This study demonstrates that the ability of human hair follicle keratinocytes to form clones decreases with ageing.
7 citations
,
March 2017 in “Journal of dermatology” This review outlines the clinical and histopathological features that aid in classifying tumors arising from the folliculosebaceous apparatus and reports no new research results.
3 citations
,
April 2018 in “Therapeutic Delivery” This editorial discusses advances in engineering techniques for hair follicle regeneration and highlights future potential but reports no original research findings.
1 citations
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January 2013 in “Journal of Investigative Dermatology” The document concludes that stem cells and their environments are crucial for skin and hair health and have potential for medical treatments.
1 citations
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January 2011 in “International Journal of Trichology” Hair follicle stem cells have significant potential for treating various disorders.
November 2024 in “Journal of Translational Internal Medicine” This study found that umbilical cord mesenchymal stem cell-derived exosomes improved hair growth in mice with androgenetic alopecia by promoting hair follicle stem cell stemness through the RAS/ERK pathway, suggesting a potential new treatment strategy for this condition.
October 2023 in “bioRxiv (Cold Spring Harbor Laboratory)” This study demonstrated that disrupting EGFR signaling in mice leads to immune sensitivity compromising the hair follicle's protective environment, but JAK1/2 inhibition can restore this immune privilege and stimulate hair growth, suggesting a potential therapy for scarring hair loss diseases like cicatricial alopecia.
March 2022 in “Indian Journal of Animal Research” In this study, canine hair follicle stem cells were shown to be multipotent, capable of differentiating into various cell types like adipocytes in vitro.
April 2020 in “Journal of animal research” In this study, researchers identified hair follicle stem cells in the bulge region of canine hair follicles, suggesting potential applications for future translational research.
February 2020 in “International Journal of Current Microbiology and Applied Sciences” This study found that canine hair follicle stem cells in vitro expressed markers associated with multipotency, suggesting their potential role in the hair cycle.
June 2017 in “Journal of The American Academy of Dermatology” LED light helps hair follicle cells grow and prevents them from dying by activating certain cell pathways.
January 2015 in “Journal of Cytology and Histology” This study suggests that follicular stem cells in the bulge region are not directly targeted in androgenetic alopecia, based on the consistent presence of cytokeratin 15 across scalp samples from affected patients.
59 citations
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June 2023 in “Nature Aging” This study observed that in aged mouse skin, there was an increase in IL-17-expressing T helper cells, γδ T cells, and innate lymphoid cells, and blocking IL-17 signaling reduced skin inflammation and delayed age-related changes, suggesting it as a potential target to mitigate skin aging.
44 citations
,
November 2011 in “The Journal of Dermatology” This review discusses recent advancements in the management and diagnosis of primary cicatricial alopecias but reports no new clinical results; emerging insights suggest sebaceous gland dysfunction may play a role in their etiopathogenesis.
27 citations
,
January 2013 in “The journal of investigative dermatology/Journal of investigative dermatology” This study identified somatostatin as a potential secretory factor contributing to the immune privilege of human hair follicles.
23 citations
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January 2024 in “Nature Immunology” This study, using multimodal profiling in mice, found that various tissues contain unique γδ T cell subsets adapted to their environment, revealing their functional diversity, lineage relationships, and similarities to CD8+ tissue-resident memory T cells.
17 citations
,
October 2017 in “Scientific reports” This study found that Super Merino sheep have a higher wool follicle density, finer fleece, and distinct gene expression compared to Small Tail Han sheep, which may inform future breeding and genetic interventions.
7 citations
,
June 2022 in “Czech Journal of Animal Science” This study identified 21 novel circular RNAs in cashmere goats, with nine significantly more expressed during the anagen phase of hair follicle growth, suggesting roles in hair regeneration and cashmere yield enhancement.
1 citations
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December 2025 in “Scientific Reports” In this study, researchers developed a predictive model for the onset of alopecia areata by analyzing six datasets to identify key feature genes and employing various machine learning algorithms, ultimately finding the XGBoost model most effective for clinical application.
March 2026 in “Frontiers in Medicine” This study provides a framework for understanding different types of alopecias based on immune privilege collapse at specific follicular sites, revealing distinct patterns in immune effector programs and stromal influences depending on the alopecia type.
November 2025 in “Frontiers in Immunology” This review discusses the role of immune cells in the pathogenesis of alopecia areata and highlights emerging immunomodulatory strategies and novel therapeutic targets aimed at offering more effective and durable treatments for this autoimmune hair loss disorder.
August 2025 in “Dermatology and Therapy” This study conducted a meta-analysis of gene expression data from alopecia areata patients, identifying 5109 differentially expressed genes and highlighting enriched pathways like JAK-STAT signaling, providing insights into the disease's pathogenesis and potential treatment targets.