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

Society of Cosmetic Scientists of Korea (대한화장품학회)
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Inhibitory Effects of Novel Hexapeptide on Melanogenesis by Regulating MITF in B16F10 Melanoma Cells

B16F10 멜라닌 세포에서 신규 헥사펩타이드의 MITF 조절을 통한 멜라닌 생성 저해 효과

  • Lee, Eung Ji (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Kim, Jandi (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Jeong, Min Kyeong (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Lee, Young Min (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Chung, Yong Ji (Department of Chemistry and Cosmetics, Jeju National University) ;
  • Kim, Eun Mi (Department of Chemistry and Cosmetics, Jeju National University)
  • Received : 2019.12.05
  • Accepted : 2020.03.18
  • Published : 2020.03.30
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Abstract

In this study, we investigated anti-pigmentation effect of a hexapeptide. The peptide significantly reduced melanin contents and inhibited tyrosinase activity in a dose-dependent manner, in which tyrosinase is a key enzyme in melanogenesis. The peptide also significantly reduced the expression levels of tyrosinase (TYR), tyrosinase-related protein 1 (TYRP1) and their upstream transcription factor, microphthalmia-associated transcription factor (MITF). Furthermore, the peptide suppressed the phosphorylation level of cAMP-response element binding protein (CREB), a transcription factor of MITF, and increased the phosphorylation level of extracellular signal-regulated kinase (ERK), a kinase mediates MITF phosphorylation and proteasomal degradation. The peptide significantly inhibited the expression of Rab27A, Melanophilin, and MyosinVa, the components of motor complex involved in intracellular movement of melanosome. These results suggest that Hexapeptide could be used as an effective whitening agent that has inhibitory effect on melanin production and melanosome transport by regulating expression and degradation of MITF in melanocytes.

본 연구에서는 6 개의 아미노산으로 이루어진 헥사펩타이드(hexapeptide)의 미백 효능에 대해 수행하였다. 실험 결과 헥사펩타이드 처리에 의해 유의한 수준의 멜라닌 생성 저해가 관찰 되었고, 멜라닌 생성 과정에 관여하는 주요 효소인 tyrosinase의 활성이 농도 의존적으로 억제됨이 관찰 되었다. 멜라닌 생성 관련 인자들의 발현을 관찰 한 결과 tyrosinase (TYR), tyrosinase-related protein 1 (TYRP1) 및 이들의 상위 전사인자인 microphthalmia-associated transcription factor (MITF)의 발현이 헥사펩타이드 처리에 의해 유의한 수준으로 저해 되었다. 또한 헥사펩타이드 처리에 의해 MITF 발현을 조절하는 상위 전사인자인 cAMP-response element binding protein (CREB)의 인산화가 저해 되었고 MITF 인산화를 통해 프로테아좀 분해(proteasomal degradation)를 유도하는 extracellular signal-regulated kinase (ERK) 인산화가 증가 되었다. 이외에도, 멜라노좀의 세포 내 이동에 관여하는 복합체의 구성 인자들로 알려진 Rab27A, melanophilin, myosinVa의 발현도 헥사펩타이드에 의해 유의한 수준으로 저해 되었다. 이 결과를 통해, 본 연구의 헥사펩타이드는 멜라닌세포의 멜라닌 생성 관련 핵심 전사인자인 MITF의 발현 및 분해 조절을 통해 멜라닌 생성 억제 및 멜라노좀 이동과 같은 전반적인 멜라노좀 성숙 과정에 저해 효과를 나타내는 것으로 보인다. 헥사펩타이드의 이러한 미백 효능은 신규 미백 기능성 화장품 소재로 응용될 수 있을 것으로 기대된다.

Keywords

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