PTC596 is an orally active and selective B-cell-specific Moloney murine leukemia virus integration site 1 (BMI-1) inhibitor. PTC596 targets BMI1 expressed by both tumor cells and cancer stem cells (CSCs), and induces hyper-phosphorylation of BMI1, leading to its degradation. PTC596 downregulates MCL-1 and induces p53-independent mitochondrial apoptosis in acute myeloid leukemia progenitor cells[1][2].
[1]. Nishida Y, et al. The novel BMI-1 inhibitor PTC596 downregulates MCL-1 and induces p53-independent mitochondrial apoptosis in acute myeloid leukemia progenitor cells. Blood Cancer J. 2017 Feb 17;7(2):e527. [2]. BMI1 inhibitor PTC596