April 2026 in “International Journal of Molecular Sciences” This study reviews evidence that in keloid development, transforming growth factor-β (TGF-β) drives fibroblast proliferation and fibrosis not only through the classical Smad-dependent pathway but also via equally important Smad-independent signaling cascades, suggesting these pathways as possible targets for more effective keloid therapies.
10 citations
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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.
4 citations
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February 2022 in “PeerJ” This study found that hair follicle mesenchymal stem cells improved liver function and pathology in a mouse model of liver cirrhosis, potentially by inhibiting the TGF-β/Smad pathway and reducing hepatic stellate cell activation.
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.
4 citations
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April 2024 in “Cellular and Molecular Biology” In this study, injectable platelet-rich fibrin (i-PRF) was found to enhance the proliferative, migratory, and hair-inducing abilities of dermal papilla cells more effectively than platelet-rich plasma through the TGF-β/Smad pathway.