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

Society of Cosmetic Scientists of Korea (대한화장품학회)
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Melanogenesis Promotion by 3-Deazaneplanocin A, a Specific Inhibitor of S-Adenosylhomocysteine Hydrolase, in B16/F10 Melanoma Cells

B16/F10 흑색종 세포에서 S-Adenosylhomocysteine Hydrolase 의 선택적 저해제 3-Deazaneplanocin A 에 의한

  • Hwang, Yun Jeong (Department of Molecular Medicine, School of Medicine, Brain Korea (BK) 21 Plus Kyungpook National University (KNU) Biomedical Convergence Program, Cell and Matrix Research Institute, Kyungpook National University) ;
  • Boo, Yong Chool (Department of Molecular Medicine, School of Medicine, Brain Korea (BK) 21 Plus Kyungpook National University (KNU) Biomedical Convergence Program, Cell and Matrix Research Institute, Kyungpook National University)
  • 황윤정 (경북대학교 의학전문대학원 분자의학교실) ;
  • 부용출 (경북대학교 의학전문대학원 분자의학교실)
  • Received : 2021.03.10
  • Accepted : 2021.05.14
  • Published : 2021.06.30
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Abstract

Skin hypopigmentation, which is observed in albinism or vitiligo, occurs when melanin synthesis is decreased by genetic, epigenetic, and other factors. To identify drug candidates that can promote melanin synthesis in cells, we screened an epigenetic modulator library consisting of 141 cell-permeable, small molecule drugs. B16/F10 murine melanoma cells were treated with each drug at 0.1 𝜇M and melanin synthesis and cell viability were subsequently monitored. As a result, (-)-neplanocin A, 3-deazaneplanocin A (DZNep), and DZNep hydrochloride were found to increase cellular melanin synthesis without causing cytotoxicity. Because these three structurally related drugs exhibited similar dose-dependent effects on melanin synthesis and cell viability, DZNep was selected as a representative drug for additional experiments. DZNep increased intracellular melanin content and tyrosinase (TYR) activity. DZNep also induced the expression of TYR, tyrosinase-related protein 1 (TYRP1), and dopachrome tautomerase (DCT) at the mRNA and protein levels. DZNep also induced the mRNA and protein expression of microphthalmia-associated transcription factor (MITF), a key regulator of melanin synthesis. DZNep is a specific inhibitor of S-adenosylhomocysteine hydrolase and it caused the accumulation of S-adenosylhomocysteine that inhibits histone methyltransferases in cells. This study suggests that melanogenesis can be modulated by targeting S-adenosylhomocysteine hydrolase in certain cellular contexts.

백색증이나 백반증에서 관찰되는 피부 저색소침착은 유전적 요인, 후성유전적 요인 및 기타 요인에 의해 멜라닌 합성이 감소할 때 발생한다. 세포에서 멜라닌 합성을 촉진 할 수 있는 약물 후보를 확인하기 위해 141개의 세포 투과성 저분자 약물로 구성된 후성유전적 조절제 라이브러리를 스크리닝했다. B16/F10 쥐 흑색종 세포를 0.1 𝜇M에서 각 약물로 처리하고 멜라닌 합성 및 세포 생존력을 모니터링했다. 그 결과, (-)-네플라노신 A, 3-디아자네플라노신 A (DZNep) 및 DZNep 염산염이 세포 독성을 일으키지 않고 멜라닌 합성을 증가시키는 것으로 나타났다. 이 세 가지 구조적으로 관련된 약물은 세포 멜라닌 합성 및 세포 생존력에 유사한 용량 의존적 효과를 나타내었기 때문에 DZNep을 추가 실험을 위한 대표 약물로 선택하였다. DZNep는 세포내 멜라닌 함량과 티로시나제(TYR) 활성을 증가 시켰다. DZNep은 또한 mRNA와 단백질 수준에서 TYR, 티로시나제 관련 단백질 1 (TYRP1) 및 도파크롬 토토머라제 (DCT)의 발현을 유도했다. DZNep는 또한 멜라닌 합성의 주요 조절자인 소안구증 관련 전사 인자(MITF)의 mRNA와 단백질 발현을 유도했다. DZNep은 S-아데노실 호모시스테인 가수분해효소의 선택적 억제제이며 히스톤 메틸화효소를 저해하는 S-아데노실 호모시스테인의 세포내 축적을 유발하였다. 이 연구는 특정 세포 상황에서 S-아데노실 호모시스테인 가수분해효소를 표적함으로써 멜라닌 생성이 조절될 수 있음을 시사한다.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (Ministry of Science and ICT) (No. 2019R1I1A2A01045132), Republic of Korea.

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