Molecular Signalings in Hair Regeneration

A special issue of Cells (ISSN 2073-4409). This special issue belongs to the section "Cell Signaling".

Deadline for manuscript submissions: 30 April 2025 | Viewed by 739

Special Issue Editor


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Guest Editor
Department of Anatomy, Yonsei University College of Medicine, Seoul, Republic of Korea
Interests: hair regeneration; hair follicular stem cells; wound healing; scarless healing; wound-induced hair neogenesis; skin aging; squamous cell carcinoma; obesity and diabetes; digit regeneration; Wnt signaling; drug development; lineage tracing; tissue clearing; skin pattern; human organ development; somatic mosaicism

Special Issue Information

Dear Colleagues,

Hair regeneration can occur through hair cycle activation, niche environment regulation, and wound-induced hair follicle neogenesis (WIHN) and may be utilized to treat alopecia. Previous studies on hair regeneration were limited to addressing intra-hair follicle regeneration through hair cycle activation, but the discovery of the phenomenon called WIHN by Ito et al., 2007, presented a new paradigm for hair regeneration and alopecia treatment. Hair regeneration is regulated by multiple signaling pathways, such as the Wnt/β-catenin, Sonic hedgehog (SHH), and PI3K/Akt signaling pathways. In particular, WIHN was found to be significantly induced by the activation of the Wnt/β-catein and SHH pathways. Ultimately, in-depth studies of the molecular signaling pathways involved in hair regeneration may provide new fundamental treatments for alopecia.

This Special Issue will provide a collection of original research and review articles on molecular signaling pathways in hair regeneration that may ultimately contribute to the treatment of alopecia. Potential topics include the role of molecular signaling pathways in hair regeneration; multiple signaling pathways regulating WIHN; the relationship between hair follicle development and regeneration; molecular signaling pathways as therapeutic targets for alopecia; development of new treatments by controlling signaling involved in hair regeneration.

Dr. Soung-Hoon Lee
Guest Editor

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Keywords

  • hair regeneration
  • wound-induced hair follicle neogenesis (WIHN)
  • Wnt/β-catein signaling pathway
  • sonic hedgehog (SHH) signaling pathway
  • alopecia treatment

Published Papers (1 paper)

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Research

20 pages, 10584 KiB  
Article
Increasing GSH-Px Activity and Activating Wnt Pathway Promote Fine Wool Growth in FGF5-Edited Sheep
by Xue-Ling Xu, Su-Jun Wu, Shi-Yu Qi, Ming-Ming Chen, Zhi-Mei Liu, Rui Zhang, Yue Zhao, Shun-Qi Liu, Wen-Di Zhou, Jin-Long Zhang, Xiao-Sheng Zhang, Shou-Long Deng, Kun Yu, Yan Li and Zheng-Xing Lian
Cells 2024, 13(11), 985; https://doi.org/10.3390/cells13110985 - 5 Jun 2024
Viewed by 527
Abstract
Fibroblast growth factor 5 (FGF5) plays key roles in promoting the transition from the anagen to catagen during the hair follicle cycle. The sheep serves as an excellent model for studying hair growth and is frequently utilized in various research processes [...] Read more.
Fibroblast growth factor 5 (FGF5) plays key roles in promoting the transition from the anagen to catagen during the hair follicle cycle. The sheep serves as an excellent model for studying hair growth and is frequently utilized in various research processes related to human skin diseases. We used the CRISPR/Cas9 system to generate four FGF5-edited Dorper sheep and only low levels of FGF5 were detected in the edited sheep. The density of fine wool in GE sheep was markedly increased, and the proportion of fine wool with a diameter of 14.4–20.0 μm was significantly higher. The proliferation signal in the skin of gene-edited (GE) sheep was stronger than in wild-type (WT) sheep. FGF5 editing decreased cortisol concentration in the skin, further activated the activity of antioxidant enzymes such as Glutathione peroxidase (GSH-Px), and regulated the expression of Wnt signaling pathways containing Wnt agonists (Rspondins, Rspos) and antagonists (Notum) in hair regeneration. We suggest that FGF5 not only mediates the activation of antioxidant pathways by cortisol, which constitutes a highly coordinated microenvironment in hair follicle cells, but also influences key signals of the Wnt pathway to regulate secondary hair follicle (SHF) development. Overall, our findings here demonstrate that FGF5 plays a significant role in regulating SHF growth in sheep and potentially serves as a molecular marker of fine wool growth in sheep breeding. Full article
(This article belongs to the Special Issue Molecular Signalings in Hair Regeneration)
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