578 citations
,
April 1993 in “Cell” This study found that mice with a disrupted TGFα gene display a curly whisker-coat phenotype, similar to waved-1 mice, suggesting TGFα's crucial role in skin architecture and hair development.
409 citations
,
May 1991 in “Genes & Development” This study observed that overexpression of TGF-alpha in transgenic mice led to thicker epidermis and stunted hair growth, particularly in regions with normally thick skin and low hair density.
October 2025 in “Clinical Cosmetic and Investigational Dermatology” This study synthesizes knowledge of how dendritic cell signals, epithelial integrins, and fibroblast activity converge on TGF-β1 to maintain or disrupt skin healing, contrasting normal and fibrotic scar formation and suggesting possible integrin and immune-targeted treatments for skin fibrosis.
190 citations
,
October 2002 in “The FASEB journal” In this study, androgen did not affect keratinocyte growth in coculture with androgenetic alopecia-derived dermal papilla cells, but did significantly suppress keratinocyte growth when androgen receptor was overexpressed in the papilla cells.
103 citations
,
July 2001 in “Proceedings of the National Academy of Sciences” This study found that conditional expression of TGFβ1 in mice affects epidermal and hair follicle growth, with chronic expression causing severe alopecia and a negative feedback loop involving Smad7.
78 citations
,
June 2003 in “Journal of Investigative Dermatology Symposium Proceedings” TGF-β1 from dermal papilla cells suppresses hair growth, and targeting it may help treat androgenetic alopecia.
28 citations
,
November 2018 in “Journal of Cellular and Molecular Medicine” This review discusses the role of the CXXC5 protein as a transcription factor and signaling coordinator, noting its involvement in embryonic development, tissue homeostasis, and diseases such as tumorigenesis, but reports no new experimental findings.
26 citations
,
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.
24 citations
,
December 2014 in “International Journal of Molecular Medicine” In this study, researchers found that petroleum ether extract of Eclipta alba significantly stimulated follicular keratinocyte proliferation and reduced TGF-β1 expression in nude mice, suggesting potential use for certain types of alopecia.
19 citations
,
September 2011 in “Journal of Dermatological Science” TGF-β1 increases androgen receptor activity in hair loss, but Hic-5/ARA55 can counter this effect.
14 citations
,
January 2017 in “Pharmacological Reports” TP0427736 may help treat hair loss by blocking a specific protein and promoting hair growth.
14 citations
,
January 2006 in “Skin pharmacology and physiology” This study found that procyanidin oligomers from apples and barley may stimulate hair growth by promoting hair epithelial cell proliferation and protecting them from apoptosis via MEK activation in a murine model.
11 citations
,
August 2021 in “Aging” This study found that TGF-β2 may enhance collagen expression and spheroid formation in human dermal papilla cells, which could improve their hair inductivity and maintenance.
10 citations
,
August 2020 in “Acta histochemica” This study found that all-trans-retinoic acid (ATRA) inhibits mink hair follicle growth by reducing dermal papilla cell proliferation and inducing apoptosis, likely through the TGF-β2/Smad2/3 pathway.
5 citations
,
February 2017 in “Biomolecules & Therapeutics” The authors reported that 4-O-methylhonokiol decreased TGF-β1-induced cell cycle arrest and oxidative stress markers in human keratinocyte cells, suggesting a potential protective role in TGF-β1-mediated cell cycle regulation.
3 citations
,
July 2024 in “Cell Proliferation” In this study, a wound-induced skin fibrosis model in mice revealed that TGFβ signaling plays a pivotal role in maintaining fibrogenic characteristics in dermal adipocyte progenitors, which could inform new therapeutic approaches for fibrotic skin conditions such as scleroderma.
April 2026 in “Inflammopharmacology” This study found that Punica granatum ethanolic leaf extract may alleviate skin fibrosis in rats by modulating inflammation-related pathways and reducing dermal alterations.
April 2026 in “Biosaintifika Journal of Biology & Biology Education” This study found that in a fluconazole-induced alopecia-like rat model, a 14-day treatment with hypoxia-induced mesenchymal stem cell exosomes significantly increased TGF-β and PDGF levels, which may improve hair growth and suggests a potential therapeutic strategy for alopecia and other inflammation-related skin disorders.
March 2026 in “Frontiers in Veterinary Science” This study found that all-trans retinoic acid (ATRA) inhibits proliferation and promotes apoptosis in secondary hair follicle-derived dermal papilla cells from cashmere goats, likely via the TGF-β2/Smad2/3 signaling pathway.
April 2025 in “Journal of Investigative Dermatology” This study discovered that exosomes from adipose-derived mesenchymal stem cells can mitigate damage in dermal papilla cells by modulating the TGF-β1/SMAD2 signaling pathway through miRNAs miR-574-3p and miR-125a-5p, revealing potential therapeutic targets for androgenetic alopecia.
January 2025 in “Journal of Contemporary Medical Practice” The researchers reported that nano-cerium oxide improved androgenetic alopecia in mice by increasing the ratio of terminal to vellus hairs, elevating IGF-1 expression, and reducing TGF-β and DHT levels in the skin, suggesting potential for drug development.
December 2023 in “International journal of multidisciplinary research and analysis” This study suggests that administering SH-MSCs gel might decrease IL-6 expression and increase TGF-β expression in alopecia-like rats, indicating potential for alopecia therapy.
July 2020 in “Benha Medical Journal” This study found that patients with alopecia areata had higher serum TGF-β1 levels than controls, and these levels were associated with disease severity, suggesting a potential role in its pathogenesis.
April 2023 in “Journal of Investigative Dermatology” This study found that the dermal sheath smooth muscle regulates hair follicle progenitor cell death during hair regression through mechanical signaling of the TGF-β pathway.
April 2007 in “Linchuang pifuke zazhi” This study found that in androgenetic alopecia patients, there is enhanced expression of type 2 TGF-β and type II receptors in hair follicles, suggesting a link to hair growth cycle changes.
July 1997 in “JEADV. Journal of the European Academy of Dermatology and Venereology/Journal of the European Academy of Dermatology and Venereology” TGF-β is found in hair follicles and may cause hair loss in alopecia areata.
March 2023 in “International Journal of Molecular Sciences” This study found that exosomes from adipose mesenchymal stromal cells, particularly those carrying miR-122-5p, may enhance hair follicle regeneration in androgenic alopecia by targeting the TGF-β/SMAD3 axis.
13 citations
,
November 2015 in “Gene” In this study, TGFβR I was more highly expressed in alpaca ear skin than in back skin, suggesting it may inhibit coat hair growth, with let-7b downregulating TGFβR I protein through transcriptional repression.
April 2023 in “Journal of Investigative Dermatology” This study suggests that the CsA-induced inactivation of the CaN/NFAT pathway may suppress TGF-β2 expression in dermal papilla cells, potentially contributing to CsA-associated hypertrichosis.
April 2017 in “Journal of Investigative Dermatology” In this study, HPH-15, a newly synthesized compound, demonstrated potential in reducing skin fibrosis in a mouse model by targeting underlying pathogenic mechanisms and exhibited a good safety profile, warranting further clinical trials for fibrotic skin disorders like systemic sclerosis.