Dipeptides Inhibit Melanin Synthesis in Mel-Ab Cells through Down-Regulation of Tyrosinase.
10.4196/kjpp.2012.16.4.287
- Author:
Hyun E LEE
1
;
Eun Hyun KIM
;
Hye Ryung CHOI
;
Uy Dong SOHN
;
Hye Young YUN
;
Kwang Jin BAEK
;
Nyoun Soo KWON
;
Kyoung Chan PARK
;
Dong Seok KIM
Author Information
1. Department of Biochemistry, Chung-Ang University College of Medicine, Seoul 156-756, Korea. ds_kim@cau.ac.kr
- Publication Type:Original Article
- Keywords:
Dipeptide;
ERK;
Melanogenesis;
MITF;
Tyrosinase
- MeSH:
Cell-Free System;
Cyclic AMP Response Element-Binding Protein;
Dipeptides;
Down-Regulation;
Follow-Up Studies;
Melanins;
Microphthalmia-Associated Transcription Factor;
Monophenol Monooxygenase;
Phosphorylation;
Signal Transduction
- From:The Korean Journal of Physiology and Pharmacology
2012;16(4):287-291
- CountryRepublic of Korea
- Language:English
-
Abstract:
This study investigated the effects of proline-serine (PS) and valine-serine (VS) dipeptides on melanogenesis in Mel-Ab cells. Proline-serine and VS significantly inhibited melanin synthesis in a concentration-dependent manner, though neither dipeptide directly inhibited tyrosinase activity in a cell-free system. Both PS and VS down-regulated the expression of microphthalmia-associated transcription factor (MITF) and tyrosinase. In a follow-up study also described here, the effects of these dipeptides on melanogenesis-related signal transduction were quantified. Specifically, PS and VS induced ERK phosphorylation, though they had no effect on phosphorylation of the cAMP response element binding protein (CREB). These data suggest that PS and VS inhibit melanogenesis through ERK phosphorylation and subsequent down-regulation of MITF and tyrosinase. Properties of these dipeptides are compatible with application as skin-whitening agents.
