Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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ICP5249 Promotes Hair Growth by Activating the AMPK-Autophagy Signaling Pathway

  • Jung Ok Lee (Department of Dermatology, College of Medicine, Chung-Ang University) ;
  • Yu-jin Kim (Department of Dermatology, College of Medicine, Chung-Ang University) ;
  • You Na Jang (Department of Dermatology, College of Medicine, Chung-Ang University) ;
  • Jung min Lee (Department of Dermatology, College of Medicine, Chung-Ang University) ;
  • Kayoung Shin (R&D Center, Incospharm Corporation) ;
  • Sekyoo Jeong (R&D Center, Incospharm Corporation) ;
  • Hwa-Jee Chung (R&D Center, Incospharm Corporation) ;
  • Beom Joon Kim (Department of Dermatology, College of Medicine, Chung-Ang University)
  • Received : 2024.06.10
  • Accepted : 2024.07.21
  • Published : 2024.09.28
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Abstract

Autophagy is essential for regulating hair growth. Accordingly, we developed autophagy activator ICP5249 (pentasodium tetracarboxymethyl palmitoyl dipeptide) and investigated its potential role in hair growth. We evaluated its effect on hair growth using in vitro human dermal papilla cells (hDPCs) culture model, human hair follicles (hHFs) organ culture model, and telogenic mouse model. ICP5249 increased hDPCs proliferation and alkaline phosphatase (ALP) expression. It also increased microtubule-associated protein (MAP) light chain 3-II (LC3-II) expression and AMP-activated protein kinase α (AMPKα) and unc-51-like kinase 1 (ULK1) phosphorylation in hDPCs. ICP5249 extended the length of hHFs and increased LC3-II please revised from LC3 II to LC3-II in all manuscript expression. Consistently, ICP5249 also significantly increased hair growth area, dermis thickness, and anagen and telogen ratio in telogenic mice. Furthermore, it upregulated Ki-67 and LC3-II expression and AMPKα phosphorylation on the mice's dorsal skin. To investigate whether AMPK regulates ICP5249-induced hair growth, following treatment with the compound C, AMPK inhibitor, the activity of ICP5249 was evaluated. The effects of ICP5249 on hair growth were assessed following pretreatment with the AMPK inhibitor compound C. The results showed that compound C suppressed ICP5249-mediated proliferation and hair inductivity in hDPCs. Additionally, compound C inhibited ICP5249-mediated hair growth area, dermis thickness, anagen and telogen ration, and LC3-II expression in mice, suggesting that ICP5249 promotes hair growth by modulating autophagy, with AMPKα playing a regulatory role in this process. Taken together, we demonstrate that ICP5249 has the potential as an ingredient for improving hair growth.

Keywords

Acknowledgement

This work was supported by Incospharm Corporation.

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