SLC7A8 and melanoma: Carrier-mediated proteins overexpressed in melanoma cells include L-type amino acid transporter 1 (LAT1/SLC7A5) [5,6,7], L-type amino acid transporter 2 (LAT2/SLC7A8) [5,6,7], alanine-serine-cysteine transporter 2 (ASCT2/SLC1A5) [5,6,7], and glucose uptake transporter 1 (GLUT1) [8].