Protopanaxatriol inhibits melanin synthesis through inactivation of the pCREB-MITF-tyrosinase signalling pathway in melanocytes.
Clin Exp Dermatol
; 44(3): 295-299, 2019 Apr.
Article
em En
| MEDLINE
| ID: mdl-30194867
ABSTRACT
Ginsenosides are major active components of ginseng, and have diverse pharmacological properties in traditional medicine. Recent reports have shown that ginsenosides modify skin physiology and mitigate skin disorders such as photoageing and hyperpigmentation. We evaluated the antimelanogenic efficacy of protopanaxatriol, a major category of ginsenosides, as a depigmenting agent. Protopanaxatriol significantly reduced intracellular and extracellular melanin content in a concentration-dependent manner in B16 melanoma cells treated with α-melanocyte-stimulating hormone. In normal human epidermal melanocytes, protopanaxatriol clearly decreased melanin synthesis and dendrite elongation. In addition, protopanaxatriol dramatically suppressed the expression of genes encoding the melanogenic proteins tyrosinase, tyrosinase-related protein-1 and -2, and microphthalmia-associated transcription factor through dephosphorylation of cAMP response element-binding protein. These results suggest that protopanaxatriol could be an effective candidate anti-melanogenic agent.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sapogeninas
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Proteína de Ligação ao Elemento de Resposta ao AMP Cíclico
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Fator de Transcrição Associado à Microftalmia
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Melanoma
Limite:
Animals
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Humans
Idioma:
En
Revista:
Clin Exp Dermatol
Ano de publicação:
2019
Tipo de documento:
Article