LAT1/SLC7A5-mediated amino acid uptake is regulated by redox signals triggered by formyl-peptide receptor 2. (PubMed, FEBS J)
Herein, we analyze the LAT1/SLC7A5-mediated uptake of several essential AAs in FPR2-stimulated CaLu-6 and HCC1937 cells and prove: (i) the redox regulation of both LAT1/SLC7A5 and 4F2hc/SLC3A2/CD98, which form a heterodimer on the plasma membrane; (ii) the redox activation of the mTOR pathway and, in turn, of S6K1 and 4E-BP1, which stimulate protein synthesis; (iii) c-Myc and miR-126 regulation, which control LAT1/SLC7A5 synthesis at the transcriptional and post-transcriptional level, respectively. These findings provide new approaches for the development of novel therapeutic strategies for the treatment of human cancers.