LIN28 inhibitor LI71 is a potent and cell-permeable LIN28 inhibitor, which abolishes LIN28-mediated oligouridylation with an IC50 of 7 uM. LIN28 inhibitor LI71 directly binds the cold shock domain (CSD) to suppress LIN28's activity against let-7 in leukemia cells and embryonic stem cells[1]. IC50: 7 uM (LIN28)[1]
[1]. Wang L, et al. Small-Molecule Inhibitors Disrupt let-7 Oligouridylation and Release the Selective Blockade of let-7 Processing by LIN28. Cell Rep. 2018 Jun 5;23(10):3091-3101.