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Docosahexaenoic acid inhibits melanin synthesis in murine melanoma cells in vitro through increasing tyrosinase degradation.
- Source :
- Acta Pharmacologica Sinica; Apr2014, Vol. 35 Issue 4, p489-495, 7p
- Publication Year :
- 2014
-
Abstract
- Aim:To investigate the effects of docosahexaenoic acid (DHA) on melanin synthesis and related regulatory mechanisms.Methods:B16F10 mouse melanoma cells were exposed to DHA for 3 d, and melanin content and tyrosinase activity were measured. Western blot analysis was used to analyze the protein levels in DHA-mediated signal transduction pathways.Results:DHA (1-25 μmol/L) did not affect the viability of B16F10 cells, but decreased α-MSH-induced melanin synthesis in a concentration-dependent manner. DHA concentration-dependently reduced tyrosinase activity in the cells, but did not affect mushroom tyrosinase activity in a cell-free system. Furthermore, DHA treatment significantly reduced tyrosinase level without affecting microphthalmia-associated transcription factor (MITF) in the cells. DHA did not activate ERK and Akt in the cells. Pretreatment with the proteasome inhibitor MG132 (80 nmol/L) abolished DHA-induced tyrosinase reduction.Conclusion:DHA inhibits melanogenesis in B16F10 cells in vitro through increasing tyrosinase degradation. The results suggest that DHA may be a potential agent for treatment of hyperpigmentary disorders of skin. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 16714083
- Volume :
- 35
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Acta Pharmacologica Sinica
- Publication Type :
- Academic Journal
- Accession number :
- 95393166
- Full Text :
- https://doi.org/10.1038/aps.2013.174