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<p>Androgenic alopecia (AGA) is a common condition of hair loss, triggered by excessive 5α-dihydrotestosterone (5α-DHT) generated via 5α-reductase activity. This study investigated the anti-alopecia effects of Ishophloroglucin A (IPA), a compound isolated from the brown seaweed <i>Ishige okamurae</i>. Molecular docking analysis revealed that IPA exhibits higher binding affinity to 5α-reductase than finasteride. In human dermal papilla cells (HDPCs), IPA inhibited both 5α-reductase activity and androgen receptor (AR) expression, reduced levels of dickkopf-related protein 1 (DKK1), transforming growth factor beta 1 (TGF-β1), and interleukin-6 (IL-6), and activated the Wnt/β-catenin signaling pathway by promoting glycogen synthase kinase-3 beta (GSK3β) phosphorylation and upregulating beta-catenin (β-catenin) expression. Additionally, IPA increased the expression of fibroblast growth factor (FGF) and vascular endothelial growth factor (VEGF), both of which are associated with hair growth promotion. These findings suggest that IPA is a promising therapeutic candidate for treating AGA.</p>

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Therapeutic potential of Ishophloroglucin a from Ishige okamurae in androgenic alopecia: inhibition of 5α-reductase activity and activation of the Wnt/β-catenin signaling pathway in human dermal papilla cells

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月16日

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  • Wook-Chul Kim,
  • Hyun-Soo Kim,
  • Nalae Kang,
  • Soo-Jin Heo,
  • Seung-Hong Lee

摘要

Androgenic alopecia (AGA) is a common condition of hair loss, triggered by excessive 5α-dihydrotestosterone (5α-DHT) generated via 5α-reductase activity. This study investigated the anti-alopecia effects of Ishophloroglucin A (IPA), a compound isolated from the brown seaweed Ishige okamurae. Molecular docking analysis revealed that IPA exhibits higher binding affinity to 5α-reductase than finasteride. In human dermal papilla cells (HDPCs), IPA inhibited both 5α-reductase activity and androgen receptor (AR) expression, reduced levels of dickkopf-related protein 1 (DKK1), transforming growth factor beta 1 (TGF-β1), and interleukin-6 (IL-6), and activated the Wnt/β-catenin signaling pathway by promoting glycogen synthase kinase-3 beta (GSK3β) phosphorylation and upregulating beta-catenin (β-catenin) expression. Additionally, IPA increased the expression of fibroblast growth factor (FGF) and vascular endothelial growth factor (VEGF), both of which are associated with hair growth promotion. These findings suggest that IPA is a promising therapeutic candidate for treating AGA.