Venetoclax (ABT-199, GDC-0199)
Molecular Weight(MW): 868.44
Venetoclax (ABT-199, GDC-0199) is a Bcl-2-selective inhibitor with Ki of <0.01 nM in cell-free assays, >4800-fold more selective versus Bcl-xL and Bcl-w, and no activity to Mcl-1. Phase 3.
Cited by 14 Publications
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THP-1 cells were treated with cytarabine alone and in combination with ABT-199 for 8 h. Whole cell lysates were extracted and subjected to Western blotting, and probed with anti-γH2AX or -β-actin antibody. Densitometry for γH2AX expression was measured, normalized to β-actin, and graphed as fold change compared to the no drug control. The data are presented as mean ± standard error from at least 3 independent Western blots. * indicates p < 0.05.
Mol Oncol 2014 10.1016/j.molonc.2014.09.008. Venetoclax (ABT-199, GDC-0199) purchased from Selleck.
Purity & Quality Control
Choose Selective Bcl-2 Inhibitors
|Description||Venetoclax (ABT-199, GDC-0199) is a Bcl-2-selective inhibitor with Ki of <0.01 nM in cell-free assays, >4800-fold more selective versus Bcl-xL and Bcl-w, and no activity to Mcl-1. Phase 3.|
|Features||Re-engineered version of ABT-263 (Navitoclax).|
ABT-199 shows less sensitivity to Bcl-xL, Mcl-1 and Bcl-w with Ki of 48 nM, > 444 nM and 245 nM, respectively. ABT-199 potently inhibits FL5.12-Bcl-2 cells, RS4;11 cells with EC50 of 4 nM and 8 nM, while shows low activity against FL5.12-Bcl-xL cells with EC50 of 261 nM. ABT-199 induces a rapid apoptosis in RS4;11 cells with cytochrome c release, caspase activation, the externalization of phosphatidylserine and the accumulation of sub-G0/G1 DNA. Quantitative immunoblotting reveals that sensitivity to ABT-199 correlated strongly with the expression of Bcl-2, including NHL, DLBCL, MCL, AML and ALL cell lines. ABT-199 also induces apoptosis in CLL with an average EC50 of 3.0 nM. 
|In vivo||ABT-199 (100 mg/kg) causes a maximal tumor growth inhibition of 95% and tumor growth delay of 152% in RS4;11 xenografts. ABT-199 also inhibits xenograft growth (DoHH2, Granta-519) as a single agent or in combination with SDX-105 and other agents. |
Binding affinity assays:Binding affinities (Ki or IC50) of ABT-199 against different isoforms of Bcl-2 family are determined with competitive fluorescence polarization assays. The following peptide probe/protein pairs are used: f-bad (1 nM) and Bcl-xL (6 nM), f-Bax (1 nM) and Bcl-2 (10 nM), f-Bax (1 nM) and Bcl-w (40 nM), f-Noxa (2 nM) and Mcl-1 (40 nM), and f-Bax (1 nM) and Bcl-2-A1 (15 nM). Binding affinities for Bcl-xL are also determined using a time-resolved fluorescence resonance energy transfer assay. Bcl-xL (1 nM, His tagged) is mixed with 200 nM f-Bak, 1 nM Tb-labeled anti-His antibody, and ABT-199 at room temperature for 30 min. Fluorescence is measured on an Envision plate reader using a 340/35 nm excitation filter and 520/525 (f-Bak) and 495/510 nm (Tb-labeled anti-His antibody) emission filters.
|In vitro||DMSO||100 mg/mL warmed (115.14 mM)|
|In vivo||5% DMSO+50% PEG 300+5% Tween 80+ddH2O||5mg/mL|
* 1 mg/ml means slightly soluble or insoluble.
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT02756897||Recruiting||Leukemia|Chronic Lymphocytic Leukemia|Small Lymphocytic Lymphoma||M.D. Anderson Cancer Center|AbbVie||July 7, 2016||Phase 2|
|NCT03036904||Not yet recruiting||Diffuse Large B-Cell Lymphoma|High Grade B-Cell Lymphoma||Weill Medical College of Cornell University|Genentech, Inc.|Massachusetts General Hospital|M.D. Anderson Cancer Center||February 6, 2017||Phase 1|
|NCT02951117||Not yet recruiting||Multiple Myeloma||AbbVie||May 2017||Phase 1|
|NCT02966756||Not yet recruiting||Chronic Lymphocytic Leukemia (CLL)||AbbVie|Genentech/Roche||April 2017||Phase 2|
|NCT02966782||Not yet recruiting||Myelodysplastic Syndromes (MDS)||AbbVie|Genentech, Inc.||March 2017||Phase 1|
|NCT03045328||Not yet recruiting||Recurrent Chronic Lymphocytic Leukemia|Recurrent Small Lymphocytic Lymphoma|Refractory Chronic Lymphocytic Leukemia|Refractory Small Lymphocytic Lymphoma||Steven E. Coutre|Stanford University||March 2017||Phase 1|Phase 2|
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