STF-31 is an inhibitor of glucose transporter 1 (GLUT1, IC50 = 1 μM).IC50 value: 1 μMTarget: GLUT1in vitro: STF 31 is a glucose uptake inhibitor in RCC (renal cell carcinoma) 4 cells. By limiting glucose uptake in cancer cells, the immense energy requirements for the cancer cell is not met and the cell does not have the resources to rapidly proliferate.STF-31, which selectively kills RCCs by specifically targeting glucose uptake through GLUT1 and exploiting the unique dependence of these cells on GLUT1 for survival. STF-31 decreases glycolysis by decreasing glucose transport and not by inhibiting a particular glycolytic step or enzyme.[1]in vivo: STF-31 selectively targets the von Hippel-Lindau (VHL)-deficient kidney cancer cells. STF-31 inhibits VHL-deficient cancer cells by inhibiting Glut1. Daily intraperitoneal injection of a soluble analogue of STF-31 effectively reduces the growth of tumors of VHL-deficient cancer cells grafted on nude mice. On the other hand, STF-31 appears to be an inhibitor with a narrow cell target spectrum.[2]

References:
[1]. Chan DA, et al. Targeting GLUT1 and the Warburg effect in renal cell carcinoma by chemical synthetic lethality. Sci Transl Med. 2011 Aug 3;3(94):94ra70.
[2]. Liu Y, et al. A small-molecule inhibitor of glucose transporter 1 downregulates glycolysis, induces cell-cycle arrest, andinhibits cancer cell growth in vitro and in vivo. Mol Cancer Ther. 2012 Aug;11(8):1672-1682.