EPZ004777

This study evaluated the synergistic efficacy of combining the DOT1L inhibitor EPZ004777 with the BCL-2 inhibitor ABT-737. In vivo, combination therapy prolonged survival, restored bone marrow function, and alleviated organ infiltration. These findings demonstrate that dual targeting of DOT1L and BCL-2 exerts synergistic anti-leukemic activity via PI3K/AKT suppression in MLL-rearranged AML, providing a pharmacological rationale for this innovative combination strategy.

EPZ004777 has been identified as a potent modulator of SNX19, TPBG, and ZNF185 associated with apoptosis and tumor progression in AML.

This study constructed a cellular senescence-related signature that could be used to predict HCC patients' responses to and prognosis after TACE treatment, aiding in the development of personalized treatment plans.

Moreover, the condition media (CM) obtained from MDA-MB-231 cells stably expressing either MTDH-Wt or MTDHΔ7 treated with EPZ004777 or Bay-11-7082 (NF-κB inhibitor) or FM19G11 (HIF1α inhibitor) significantly inhibited MTDH-induced tube formation in HUVECs, rat aortic ring sprouting, and vessel formations by CAM assay mimicking physiological angiogenic vasculature. Collectively, our findings reveal a novel epigenetic regulation of MTDH by DOTL1, which drives angiogenesis, and that the therapeutic disruption of the DOT1L-MTDH-NF-κB-HIF1α axis may have usefulness in the management of TNBC.

Pharmacological inhibition of DOT1L (EPZ-5676, EPZ004777, and SGC0946) or genetic inhibition of DOT1L attenuates the growth of ovarian cancer cells in cell culture and in a mouse xenograft model of ovarian cancer. DOT1L inhibition also resulted in the upregulation of the NKG2D ligand ULBP1 and subsequent increase in natural killer (NK) cell-mediated ovarian cancer eradication. Collectively, our results demonstrate that DOT1L promotes ovarian cancer tumor growth by regulating apoptotic and metabolic pathways as well as NK cell-mediated eradication of ovarian cancer and identifies DOT1L as a new pharmacological target for ovarian cancer therapy.

Our results show that DOT1L epigenetically promotes the transcription of c-Myc via H3K79me2. DOT1L silencing or inhibition induces cell cycle arrest at S phase. DOT1L is a potential marker for colorectal cancer and EPZ004777 may be a potential drug for the treatment of colorectal cancer.