December 2025 in “Cosmetics” This review synthesizes recent molecular and preclinical advances in alopecia areata and androgenetic alopecia, highlighting how interventions targeting specific intracellular signaling pathways and utilizing stem cell technologies can support precision regrowth and structural follicle reconstruction.
11 citations
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May 2023 in “Proceedings of the National Academy of Sciences” This study found that hair follicle stem cells are stiff with high actomyosin contractility, while hair germ progenitors are soft and enlarge during quiescence, influencing hair regeneration; inducing miR-205 reduces contractility and activates regeneration in mice.
71 citations
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January 2015 in “Journal of molecular cell biology/Journal of Molecular Cell Biology” This study found that mTOR signaling plays a crucial role in activating hair follicle stem cells by balancing BMP-mediated repression, essential for hair regeneration.
1 citations
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September 2023 in “eLife” This study found that TLR2 expression in hair follicle stem cells is crucial for hair follicle maintenance and regeneration, with TLR2-dependent activation potentially offering new therapeutic approaches for hair loss prevention through mechanisms involving immune pathways and CEP administration.
474 citations
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January 2012 in “Chemistry & biology” This review discusses the discovery and potential therapeutic uses of proteasome inhibitors across various diseases, including cancer and autoimmune conditions, but does not present new clinical data.
26 citations
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September 2018 in “Journal of Molecular Cell Biology” This study observed that Endoglin is crucial for maintaining correct hair follicle cycling and stimulating hair follicle stem cell niches through feedback interactions involving Wnt/β-catenin and Bmp/Smad signaling pathways in a mouse model.
19 citations
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May 2020 in “Cells” This study found that 5% primed conditioned medium from human umbilical cord blood-derived mesenchymal stromal cells significantly improved hair density, thickness, and growth rate in patients with androgenetic alopecia.
16 citations
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July 2020 in “International Journal of Molecular Sciences” This study found that ruxolitinib modulated inflammatory changes and stimulated growth factor signals by blocking the JAK-STAT pathway in an in vitro model of alopecia areata.
3 citations
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August 2013 in “Stem cells” This study found that topical application of partial proteasomal inhibitors accelerates hair growth by stabilizing β-catenin and disrupting the hair cycle's normal balance of activation and quiescence.
April 2016 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that Sox2 and BMP signaling may be key regulators of pigmentation and melanocyte migration, as suggested by experiments in mice, human biopsies, and cell co-cultures.
April 2018 in “Journal of Investigative Dermatology” This study found that BMP signaling is involved in regulating melanogenesis, pigment transfer, and melanocyte migration, contributing to our understanding of skin pigmentation mechanisms.
19 citations
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September 2019 in “PLOS genetics” This study found that telomere shortening disrupts BMP/pSmad/P63 signaling, leading to skin atrophy via Follistatin up-regulation, and suggests potential therapeutic targets.
17 citations
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June 2017 in “British Journal of Dermatology” This review examines the interaction between hedgehog and Wnt/β-catenin signalling in hair follicles and basal cell carcinoma, linking Hh pathway inhibition to both tumor regression and alopecia.
11 citations
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April 2020 in “Life sciences” In this study, pantothenic acid at 20 μg/ml was observed to promote dermal papilla cell proliferation and migration, likely through up-regulation of ID3 and inhibition of Notch signaling.
8 citations
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May 2019 in “Journal of dermatological treatment” This study found that vismodegib was effective in treating basal cell carcinoma, achieving complete remission in some patients; however, significant side effects often required careful management to prevent therapy suspension, which can lead to resistance.
August 2024 in “Biomolecules & Therapeutics” In this study, the researchers reported that a newly developed PYGL inhibitor, HTPI, enhanced hair growth in an ex-vivo culture by reducing oxidative damage in hDPCs and inhibiting glycogen degradation in hORSCs, showing potential as a treatment for hair loss comparable to minoxidil.
13 citations
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November 2019 in “Scientific reports” This study found that inhibiting 5α-reductase in molluscs provokes a specific shell morphology, suggesting gastropods might have unique 5α-reductase substrates absent in vertebrates.
39 citations
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May 2014 in “Frontiers in Pharmacology” In this study, CD4+CD25+FoxP3+ Regulatory T cells were found to reduce TGF-b1 induced lung fibrosis and fibrocyte accumulation in mice, partly by suppressing fibroblast growth factor 9.
2 citations
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October 2018 in “Archives of Dermatological Research” The researchers reported that topical tofacitinib in mice increased hair follicles in the growth phase and boosted noggin and BMP4 mRNA expressions, compared to a vehicle and minoxidil.
12 citations
,
July 2025 in “Journal of Clinical and Translational Hepatology” This review discusses how targeting TGF-β with specific inhibitors, including components from Traditional Chinese Medicine, may help reduce liver fibrosis by acting through various signaling pathways.
3 citations
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February 2014 in “Asian Pacific journal of tropical medicine” This study observed that Wnt5a mRNA expression in mice correlates with the hair cycle and inhibits hair follicle growth by antagonizing the Wnts pathway.
35 citations
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July 2018 in “Cell Reports” 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.
January 2023 in “Journal of orthopedics & bone disorders” This study suggests that platelet-rich plasma's high levels of growth factors may be limited in promoting bone regeneration due to the concurrent release of Dickkopf-1, which inhibits osteogenesis.
3 citations
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April 2016 in “The journal of investigative dermatology/Journal of investigative dermatology” This study found that topical curcumin can initiate hair growth in mice by acting as a JAK inhibitor but could not fully reverse alopecia areata, likely due to insufficient penetration to deeper skin layers.
59 citations
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February 2012 in “Journal of Dermatological Science” This review discusses the multiple layers of environmental controls on hair stem cell homeostasis and suggests that targeting these layers could offer safer regenerative medicine therapies without directly using stem cells.
This study found that TLR2 and its ligand CEP are crucial for maintaining hair follicle health and stimulating hair growth, with deficiencies observed in aging and obesity potentially reducing regeneration.
79 citations
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January 2002 in “Nucleic Acids Research” This study found that BMP-2 activates Dlx3 gene transcription in murine keratinocytes by binding with Smad1/Smad4, suggesting a mechanism for BMP signaling's role in skin and hair follicle regulation.
59 citations
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March 2008 in “The journal of investigative dermatology/Journal of investigative dermatology” This review examines the roles of Smad-4 and Smad-7 in hair follicle differentiation and development through BMP signaling and TGFβ/Activin/BMP pathway inhibition but reports no new experimental results.
223 citations
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January 2014 in “International Journal of Molecular Sciences” This article reviews the complex signaling pathways between epithelial and mesenchymal cells crucial for hair follicle morphogenesis, highlighting the Wnt pathway's role as a master regulator without reporting new experimental findings.
103 citations
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March 2011 in “PLoS Biology” This study found that a mutation in the BMP12/GDF7 gene is associated with the Naked neck trait in chickens, reducing neck feathering due to altered signaling pathways.