N-nicotinoyl tyramine, a novel niacinamide derivative, inhibits melanogenesis by suppressing MITF gene expression

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• 作者：Bora Kim^a ; Soung-Hoon Lee^b ; Kang-Yell Choi^b ; Hyun-Soo Kim^c ; ^{hyun1006@jwu.ac.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：N-Nicotinoyl tyramine ; Melanogenesis ; Microphthalmia-associated transcription factor (MITF) ; Pigmentation
• 刊名：European Journal of Pharmacology
• 出版年：2015
• 出版时间：5 October 2015
• 年：2015
• 卷：764
• 期：Complete
• 页码：1-8
• 全文大小：2577 K

文摘

We synthesized and investigated the inhibitory effects of a novel niacinamide derivative, N-nicotinoyltyramine (NNT) on melanogenesis. NNT inhibited melanin production in B16F10 murine melanoma cells stimulated with 伪-melanocyte stimulating hormone (伪-MSH), in human melanocyte and in three-dimensional cultured human skin model. NNT did not affect the catalytic activity of tyrosinase, but acted as an inhibitor of microphthalmia-associated transcription factor (MITF) and tyrosinase expressions in B16F10 cells. These findings suggest that the hypopigmentary effect of NNT results from the down-regulation of MITF and subsequently of tyrosinase, although NNT did not directly inhibit tyrosinase activity. In addition, safety of NNT was verified through performing neural stem cell morphology assay and Human repeated insult patch test as whitening agent. Our findings indicate that NNT may be a potential and non-skin irritant whitening agent for use in cosmetics and in the medical treatment of pigmentary disorders.