Ardisia crenata extract stimulates melanogenesis in B16F10 melanoma cells through inhibiting ERK1/2 and Akt activation

Yao,Cheng; Jin,Cheng  Long; Oh,Jang‑Hee; Oh,Inn  Gyung; Park,Chi‑Hyun; Chung,Jin  Ho

doi:10.3892/mmr.2014.2697

Ardisia crenata extract stimulates melanogenesis in B16F10 melanoma cells through inhibiting ERK1/2 and Akt activation

Authors:
- Cheng Yao
- Cheng Long Jin
- Jang‑Hee Oh
- Inn Gyung Oh
- Chi‑Hyun Park
- Jin Ho Chung
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Affiliations: Department of Dermatology, Seoul National University College of Medicine, Seoul 110‑744, Republic of Korea
Published online on: October 17, 2014 https://doi.org/10.3892/mmr.2014.2697
Pages: 653-657

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Abstract

Melanin protects the skin against ultraviolet radiation by scattering incoming light and absorbing diverse free radicals. Agents that increase melanin synthesis in melanocytes may reduce the risk of photodamage and skin cancer. The present study investigated the effect of a methanol extract of Ardisia crenata (AC) on melanogenesis in B16F10 cells. Treatment of cultured B16F10 cells with AC extract (10, 20 and 40 µg/ml) stimulated an increase in melanin levels in a concentration‑dependent manner, without cytotoxicity. Tyrosinase is key in the regulation of melanin production, thus the effect of AC extract on tyrosinase activity and protein expression was analyzed. AC extract was observed to significantly increase tyrosinase activity and protein expression in B16F10 cells. Furthermore, AC extract was found to markedly increase the protein expression of microphthalmia‑associated transcription factor, which is an important transcription factor involved in tyrosinase gene expression. In addition, AC extract (40 µg/ml) was observed to suppress the activation of extracellular signal‑regulated kinase (ERK) and Akt, which negatively regulate melanin synthesis in B16F10 cells. In conclusion, to the best of our knowledge, the present study is the first to show that a methanol extract of AC stimulates melanogenesis by increasing tyrosinase expression via the inhibition of ERK and Akt. Thus, methanol extract of AC may be a potential treatment for hypopigmentation diseases and may be a candidate for skin‑tanning cosmetic products.

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