Ligand-based Design of GLUT Inhibitors As Potential Antitumor Agents
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Chemistry
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Glucose transporters (GLUTs) regulate glucose uptake and are often overexpressed in several human tumors. To identify new chemotypes targeting GLUT1, we built a pharmacophore model and searched against a NCI compound database. Sixteen hit molecules with good docking scores were screened for GLUT1 inhibition and antiproliferative activities. From these, we identified that compounds 2, 5, 6 and 13 inhibited the cell viability in a dose-dependent manner and that the ICs of 2 and 6 are<10 µM concentration in the HCT116 colon cancer cell line. Lead compound 13 (NSC295720) was a GLUT1 inhibitor. Docking studies show that GLUT1 residues Phe291, Phe379, Glu380, Trp388, and Trp412 were important for inhibitor binding.
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