α-MSH	α-melanocyte-stimulating hormone
cAMP	cyclic adenosine monophosphate
CAPE	caffeic acid phenethyl ester
CREB	cAMP response element binding protein
p-CREB	phospho-cAMP response element binding protein
DHICA	5,6-dihydroxyindole-2-carboxylic acid
l-DOPA	l-dihydroxyphenylalanine
DMSO	dimethyl sulfoxide
FBS	fetal bovine serum
GSK3β	glycogen synthase kinase 3 beta
MC1R	melanocortin 1 receptor
MITF	microphthalmia-associated transcription factor
MTT	3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
PKA	protein kinase A
TRP-1	tyrosinase-related protein-1
TRP-2	tyrosinase-related protein-2