Journal of the Society of Cosmetic Scientists of Korea (대한화장품학회지)

Society of Cosmetic Scientists of Korea (대한화장품학회)
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Novel Heptapeptide Binds to the Lgr5 Induces Activation of Human Hair Follicle Cells and Differentiation of Human Hair Follicle Bulge Stem Cells

Lgr5와 결합하는 신규 헵타펩타이드를 이용한 인체 모낭 세포의 활성과 모낭줄기세포 분화 유도

  • Received : 2023.02.23
  • Accepted : 2023.03.30
  • Published : 2023.03.30
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Abstract

This study was conducted to assess the effect of heptapeptide, composed of seven amino acids, on the activation of human hair cells isolated from human hair follicles. We have confirmed that the heptapeptide could bind to Lgr5 from the results of surface plasmon resonance (SPR) analysis. Heptapeptide enhanced the proliferation of human hair follicle dermal papilla cells (HHFDPCs) in a dose dependent manner. It induced the protein level of nuclear β-catenin, and the expressions of β-catenin downstream target genes, including LEF1, Cyc-D1 and c-Myc, in HHFDPCs. Heptapeptide significantly induced the phosphorylation of Akt and ERK, and the mRNA expressions of growth factors, including hepatocyte growth factor (HGF), keratinocyte growth factor (KGF) and vascular endothelial growth factor (VEGF), in HHFDPCs. In addition, heptapeptide significantly increased mRNA expression levels of differentiation-related transcription factors of human hair germinal matrix cells (HHGMCs) and differentiation markers of human hair outer root sheath cells (HHORSCs). Additionally, we investigated the effect of heptapeptide on human hair follicle stem cells (HHFSCs) differentiation and found that the heptapeptide reduced the mRNA and protein levels of stem cell markers, while it increased those levels of differentiation markers. These results have indicated that the heptapeptide promotes proliferation or differentiation of various types of hair follicle constituent cells through the induction of Wnt/β-catenin signaling. From the results, we have suggested that the heptapeptide in this study could be applied as a new functional material for the improvement of hair growth and alopecia.

본 연구에서는 7 개의 아미노산으로 이루어진 헵타펩타이드의 Lgr5 binding에 따른 인체 모낭 구성 세포의 활성에 대한 영향을 확인하였다. 표면 플라즈몬 공명(surface plasmon resonance, SPR) 시스템을 이용하여 헵타펩타이드가 Lgr5에 결합하는 것을 확인하였다. 인체 모유두세포(human hair follicle dermal papilla cell, HHFDPC)에 헵타펩타이드를 처리한 결과, 농도 의존적인 세포 증식이 나타났으며 β-catenin의 세포 내핵 이동 및 하위 유전자인 LEF1, Cyclin-D1, c-Myc의 발현 증가가 관찰되었다. 그리고 세포 증식 기전 관련 인자인 Akt와 ERK의 인산화 수준이 증가되었으며, 성장인자인 hepatocyte growth factor (HGF), keratinocyte growth factor (KGF), vascular endothelial growth factor (VEGF) 발현이 유도되었다. 또한 인체 모모세포(human hair germinal matrix cell, HHGMC)의 분화 관련 전사 인자와 인체 외모근초세포(human hair outer root sheath cell, HHORSC)의 분화 표지 인자들도 헵타펩타이드 처리 시 높은 발현율을 보였다. 추가적으로 우리는 헵타펩타이드의 인체 모낭줄기세포(human hair follicle stem cell, HHFSC) 분화에 대한 영향을 조사하였다. 그 결과, HHFSC 표지인자들의 mRNA와 단백질 수준이 감소하였고 반면에 분화 표지인자들은 증가하였다. 상기의 결과들은 헵타펩타이드가 인체 모낭 구성 세포에서 Wnt/β-catenin 경로를 촉진시켜 증식 또는 분화를 유도할 수 있음을 보여준다. 이를 토대로 종합해 볼 때, 본 연구의 헵타펩타이드는 모발 성장을 유도하고 탈모 개선에 도움을 줄 수 있는 기능성 원료로 사용될 수 있을 것으로 보인다.

Keywords

References

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