DBeQ
For research use only.
Catalog No.S7199 Synonyms: JRF 12
7 publications
CAS No. 177355-84-9
DBeQ (JRF 12) is a selective, potent, reversible, and ATP-competitive p97 inhibitor with IC50 of 1.5 μM.
Purity & Quality Control
Choose Selective p97 Inhibitors
Biological Activity
| Description | DBeQ (JRF 12) is a selective, potent, reversible, and ATP-competitive p97 inhibitor with IC50 of 1.5 μM. | ||
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| Features | Rapidly and potently induces activation of executioner caspases and cell death. | ||
| Targets |
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| In vitro |
DBeQ blocks UbG76V-GFP, ODD-Luc and Luc-ODC degradation with IC50 of 2.6 μM, 56 μM and 45 μM in HeLa cells. DBeQ is at least 50-fold less potent toward N-ethylmaleimide–sensitive factor (NSF) and 26S proteasome. DBeQ inhibits p97 competitively with respect to ATP, with Ki of 3.2 μM, suggesting that it binds to the active site of the D2 domain. DBeQ (10 μM) potently blocks degradation of TCRα-GFP in HEK293 cells. DBeQ induces CHOP within 3 hours in a concentration-dependent manner but does not increase p21 level in HEK293 cells. DBeQ (15 μM) induces a strong accumulation of LC3-II in the nucleus plus membrane-enriched and cytosolic fractions in Hela cells. DBeQ acts by blocking autophagic degradation of LC3-II instead of inducing autophagy in HeLa cells. DBeQ (10 μM) rapidly promotes activation of the “executioner” caspases-3 and -7 in HeLa cells. DBeQ activates the intrinsic caspase-9 apoptotic pathway more than the extrinsic caspase-8 pathway, whereas STS activates both pathways to a similar extent. DBeQ is fivefold more active against multiple myeloma (RPMI8226) cells than normal human fetal lung fibroblasts (MRC5), with HeLa and Hek293 cells showing intermediate sensitivities. [1] DBeQ exhibits 20-fold selectivity for stabilizing p97-dependent vs. independent UPS reporter substrates in HeLa cells. DBeQ impairs degradation of substrates within the ERAD and autophagy pathways. [2] DBeQ (12 μM) inhibits intracellular neutralization in a dose-dependent manner in HeLa cells. DBeQ (10 μM), which completely inhibits degradation of virus and antibody in the fate-of-capsid experiment, fails to prevent degradation of IgG Fc. DBeQ (9 μM) reduces the initial gradient of neutralization as a function of antibody concentration. [3] DBeQ decreases both basal and nutrient-stimulated phosphorylation of MTOR targets similar to the effects of rapamycin in U20S cells. [4] |
Protocol
| Kinase Assay:[1] |
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Manual ATPase Assay: Assay Buffer [20 μL of 2.5× concentration, where 1× = 50 mM Tris (pH 7.4), 20 mM MgCl2, 1 mM EDTA, and 0.5 mM tris(2-carboxyethyl)phosphine (TCEP)] is dispensed into each well of a 96-well plate. Purified p97 (25 μL of 50 μM) is diluted in 975 μL of 1× Assay Buffer, and 10 μL is dispensed in each well. DBeQ (10 μL) or 5% DMSO (10 μL) is then added to each well, and the plate is incubated at room temperature for 10 min. The ATPase assay is carried out by adding to each well 10 μL of 500 μM ATP (pH 7.5), incubating at room temperature for 60 min, and then adding 50 μL Kinase Glo Plus reagent, followed by a final 10-min incubation at room temperature in the dark. Luminescence is read on an Analyst AD. DBeQ is assayed at a range of concentrations (0, 0.048, 0.24, 1.2, 6, and 30 μM) in triplicate. |
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| Cell Research:[1] |
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Solubility (25°C)
| In vitro | DMSO | 68 mg/mL (199.75 mM) |
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| Ethanol | 5 mg/mL (14.68 mM) | |
| Water | Insoluble |
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
Chemical Information
| Molecular Weight | 340.42 |
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| Formula | C22H20N4 |
| CAS No. | 177355-84-9 |
| Storage |
powder in solvent |
| Synonyms | JRF 12 |
| Smiles | C1=CC=C(C=C1)CNC2=NC(=NC3=CC=CC=C32)NCC4=CC=CC=C4 |
In vivo Formulation Calculator (Clear solution)
| Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment) | ||||||||||
| Dosage | mg/kg |  |
Average weight of animals | g | |
Dosing volume per animal | ul | |
Number of animals | |
| Step 2: Enter the in vivo formulation () | ||||||||||
| % DMSO % % Tween 80 % ddH2O | ||||||||||
| CalculateReset | ||||||||||
Calculation results:
Working concentration： mg/ml；
Method for preparing DMSO master liquid: ： mg drug pre-dissolved in μL DMSO (Master liquid concentration mg/mL，)
Method for preparing in vivo formulation：Take μL DMSO master liquid, next addμL PEG300， mix and clarify, next addμL Tween 80，mix and clarify, next add μL ddH2O，mix and clarify.
1.Please make sure the liquid is clear before adding the next solvent.
2.Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Tech Support
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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