October 2025 in “Gene Expression” This review explores the potential of exosomes, which contain substances that may stimulate hair follicle activity, as a new therapeutic strategy for alopecia, and discusses their possible benefits and risks based on current knowledge of microRNAs and intracellular signaling in hair follicle morphogenesis.
In this study, researchers used two dermal papilla spheroid models to investigate hair cycle regression mechanisms and found that the vascular system enhances tissue physiology and gene modulation, while Retinol-based treatments can partially recover tissue degeneration observed over an extended culture period.
April 2025 in “Antioxidants” In this study, the researchers found that the water-soluble fraction of Rhus semialata gall extract and its component Penta-O-Galloyl-β-D-Glucose promoted hair growth in human dermal papilla cells, and clinical trials supported these findings, showing improved hair density and appearance compared to placebo.
March 2025 in “Regenerative Therapy” This study suggests that SACM may enhance hair growth more effectively than non-treated ACM, highlighting the potential of S. maxima as a promising agent for use in pharmaceutical and cosmeceutical industries.
May 2023 in “Scientific Reports” This study found that Lepidium sativum seed extract showed potential in treating alopecia in rats by reducing 5(alpha)-dihydrotestosterone levels and improving hair length compared to minoxidil.
October 2018 in “Archivio Istituzionale della Ricerca (Universita Degli Studi Di Milano)” This review discusses mechanisms and potential dietary influences on alopecia, proposing molecular targets like TRPVs and endocannabinoids as avenues for treatment but reports no new clinical results.
This study found that fibroblast growth factor 20 (Fgf20) orchestrates the movement and behavior of dermal fibroblasts, directing their formation into dermal condensates during hair follicle development in mice.
This study revealed that IP-PA1, derived from Pantoea agglomerans, promoted hair growth in mice and increased certain growth factor expressions in human cell cultures, suggesting a unique mechanism compared to traditional hair growth treatments.
This study suggests that topically applied thyroid hormones T3 and T4 promote hair growth on human scalp tissues ex vivo, highlighting potential therapeutic use for hair loss conditions like androgenetic alopecia.
January 2022 in “Springer eBooks” This review discusses the potential of the hair follicle dermis to direct hair development and explores concepts related to hair growth and androgenetic alopecia, without reporting new clinical results.
February 2019 in “Chin J Injury Repair and Wound Healing(Electronic Edition)” This study indicates that porcine acellular dermal matrix may aid hair follicle regeneration in mice by enhancing the expression of SDF-1 and the Wnt3a/β-catenin signaling pathway.
338 citations
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July 2009 in “Development” This study demonstrates that Sox2-positive dermal papilla cells specify particular hair follicle types by showing heterogeneity in gene expression and pathway activation in these cells.
209 citations
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October 2008 in “The Journal of Pathology” This review discusses the niches supporting adult stem cells in various organisms, including well-studied germline niches and the less understood mammalian niches, but it reports no new research findings.
173 citations
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August 2015 in “Developmental cell” This study characterizes gene expression patterns in embryonic hair follicle progenitors and their niche, identifying signaling pathways like axon guidance that may drive cellular rearrangements for hair follicle formation.
130 citations
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December 1998 in “The journal of investigative dermatology/Journal of investigative dermatology” In this study, different types of catagen in the C57BL/6 mouse model exhibited varying effects on hair follicle melanocytes and melanin distribution, with spontaneous and dexamethasone-induced catagen showing pigment incontinence, while cyclophosphamide-induced catagen retained dendritic melanocytes but increased ectopic melanin.
66 citations
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February 2007 in “The journal of investigative dermatology/Journal of investigative dermatology” The researchers reported that adenosine increases FGF-7 expression in dermal papilla cells, which may stimulate hair growth via the A2b adenosine receptor and cAMP pathway.
63 citations
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April 2005 in “Mechanisms of development” This study found that heterozygous mice overexpressing Claudin-6 experienced alterations in epidermal and hair follicle differentiation, leading to distinctive coat characteristics and a disrupted epidermal permeability barrier.
38 citations
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January 2017 in “Mediators of Inflammation” This study found that platelet-rich growth factor significantly reduced the release of proinflammatory cytokines in an in vitro rheumatoid arthritis model.
37 citations
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May 2018 in “Frontiers in physiology” This study identified key long non-coding RNAs and mRNAs involved in primary wool follicle induction in carpet wool sheep, emphasizing their roles in hair follicle development and skin processes.
37 citations
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July 1999 in “The EMBO Journal” Overexpression of certain genes can shorten hair by disrupting the hair-growth cycle.
29 citations
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December 2004 in “Developmental biology” In this study, forced expression of the transcription factor cDermo-1 in chicken dermis led to the formation of ectopic feather buds and enhanced feather growth, demonstrating its role in initiating skin appendage development.
15 citations
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March 2021 in “Journal of Nanobiotechnology” This study developed a nanoscale biomimetic matrix that effectively and stably expands human hair follicle stem cells, offering a new tool for hair follicle reconstruction research.
13 citations
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October 2021 in “International Journal of Molecular Sciences” In this study, an immortalized MSC line from human adipose tissue showed potential for applications in regenerative medicine and inflammatory diseases through production of active factors, demonstrated in vitro.
10 citations
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March 2016 in “Development Growth & Differentiation” This study developed a bioengineering method to reconstruct embryonic dorsal skin from dissociated chick skin cells, allowing feather buds to form and grow in vitro, influenced by epithelial-mesenchymal interactions.
4 citations
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June 2023 in “Journal of developmental biology” In this study, researchers propose that different vertebrate skin appendages, such as hair, feathers, and scales, evolved in parallel from a shared ancestral cell structure associated with teeth, dating back approximately 420 million years ago.
2 citations
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February 2025 in “Journal of Nanobiotechnology” In this study, metal-organic frameworks modified with stearic acid were used to deliver cardamonin to hair follicles, significantly promoting hair growth and cell proliferation in testosterone-challenged mice, suggesting potential benefits for androgenic alopecia treatment.
1 citations
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September 2023 in “Journal of cosmetic dermatology” This study suggests that Silybum marianum flower extract may promote hair growth and reduce hair loss by increasing proliferation and VEGF production in dermal papilla cells and suppressing cell senescence.
June 2026 in “Current Issues in Molecular Biology” In this study, a botanical extract and minoxidil showed similar effects in vitro by reducing pro-inflammatory cytokines and 5α-reductase expression while increasing growth factors VEGF and KGF in human keratinocyte cells, suggesting potential for further in vivo research.
April 2025 in “Regenerative Therapy” This study found that PRP-Exos may stimulate hair follicle growth and enhance regeneration in cases of AGA by activating the Wnt/β-Catenin signaling pathway, showing potential both in vitro and in vivo.
October 2024 in “International Journal of Molecular Sciences” In this study, Rosa rugosa water extract improved hair length and thickness in a mouse model of DHT-induced alopecia by enhancing the expression of hair growth-promoting factors while inhibiting growth-suppressive proteins, suggesting its potential as a natural therapy for hair loss prevention.