LY2857785 is an ATP-competitive, potent and reversible CDK9/4/8 (IC50 =11 nM/CDK9-CycT, 12 nM/CDK4-CycD1, 16 nM/CDK8-CycC), DYRK2 (IC50 = 44 nM) and FLT3-D835Y (IC50 = 23 nM) inhibitor that significantly reduces cellular RNAP II CTD phosphorylation (U2OS pSer2/pSer5 IC50 =89/42 nM) with good selectivity over a panel of 109 kinase constructs (IC50 = 0.1-1μM/wt FLT3, CDK1/2/3/5/7, PIM1/2; >1 μM/100 kinases). LY2857785 exhibits antiproliferation efficacy in a wide-range cancer cultures (IC50 ∼30 nM-1 μM), and causes AML MV-4-11 xenograft tumor regression in rats (3-9 mg/kg, i.v. infusion Q5Dx5) and mice (8-10 mg/kg, i.v. bolus Q3Dx5) in vivo.
Biochemical and biophysical research communications, 513(4), 967-973 (2019-04-22)
Circadian clock and cell cycle are vital cellular programs acting in a timely-regulated, cyclic manner. The two cellular oscillators are coupled in various ways to facilitate biological processes. Here we report CDK9, a kinase belongs to the CDK family in
Cell chemical biology, 25(2), 135-142 (2017-12-26)
Irreversible inhibition of transcriptional cyclin-dependent kinases (CDKs) provides a therapeutic strategy for cancers that rely on aberrant transcription; however, lack of understanding of resistance mechanisms to these agents will likely impede their clinical evolution. Here, we demonstrate upregulation of multidrug
Assessment of the interactions between a drug and its protein target in a physiologically relevant cellular environment constitutes a major challenge in the pre-clinical drug discovery space. The Cellular Thermal Shift Assay (CETSA) enables such an assessment by quantifying the
More effective treatment options for elderly acute myeloid leukemia (AML) patients are needed as only 25-50% of patients respond to standard-of-care therapies, response duration is typically short, and disease progression is inevitable even with some novel therapies and ongoing clinical
The Journal of clinical investigation, 126(7), 2757-2772 (2016-06-21)
Glioblastomas co-opt stem cell regulatory pathways to maintain brain tumor-initiating cells (BTICs), also known as cancer stem cells. NOTCH signaling has been a molecular target in BTICs, but NOTCH antagonists have demonstrated limited efficacy in clinical trials. Recombining binding protein
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