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Glucosamine abrogates the stem cell factor  + endothelin-1-induced stimulation of melanogenesis via a deficiency in MITF expression due to the proteolytic degradation of CREB in human melanocytes
In this study, we characterized the molecular mechanism involved in the anti-melanogenic effects of GlcN using normal human melanocytes (NHMs) in culture. The SE-stimulated gene (12 h) and protein (24 h) expression levels of melanocyte-specific proteins (at the indicated times post-stimulation) were significantly abrogated by pretreatment with GlcN for 72 h. Western blotting analysis of the phosphorylation of intracellular signaling molecules in the MAPK pathway revealed that despite the significantly decreased level of total CREB protein at all times post-stimulat ion, the SE-stimulated phosphorylation of ERK, CREB and...
Source: Archives of Dermatological Research - October 1, 2018 Category: Dermatology Source Type: research