Home Apoptosis Mdm2 antagonist Nutlin-3b

Nutlin-3b

Catalog No.S8065 Synonyms: (+)-Nutlin-3

For research use only.

Nutlin-3b ((+)-Nutlin-3) is a p53/MDM2 antagonist or inhibitor with IC50 value of 13.6 μM, 150-fold less potent (+)-enantiomer of Nutlin-3 as in comparison with opposite (-)-enantiomer Nutlin-3a.

Nutlin-3b Chemical Structure

CAS No. 675576-97-3

Selleck's Nutlin-3b has been cited by 1 Publication

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Biological Activity

Description Nutlin-3b ((+)-Nutlin-3) is a p53/MDM2 antagonist or inhibitor with IC50 value of 13.6 μM, 150-fold less potent (+)-enantiomer of Nutlin-3 as in comparison with opposite (-)-enantiomer Nutlin-3a.
Targets
Mdm2 [1]
13.6 μM
In vitro

Nutlin-3b is useful as a negative control s for non-MDM2-related cellular activities. Nutlin-3a induces the expression of MDM2 and p21 (but not p53) only in cells with wild-type p53. Nutlin-3b has no effect regardless of the p53 status of the cells. Only the active enantiomer Nutlin-3a shows a potent antiproliferative activity and clear separation of potency between the cells harboring wild-type p53 and those harboring mutant p53. The potency of Nutlin-3b is much lower in the wild-type p53 cells and nearly identical to the potency of Nutlin-3a against the mutant p53 cells. After 48 hours of exposure to the Nutlin-3a, 45% of the cell population became TUNEL positive, but cells treated with the Nutlin-3b are indistinguishable from the untreated controls. [1]

Protocol (from reference)

Kinase Assay:[1]
  • Biacore study:

    Competition assay is performed on a Biacore S51. A Series S Sensor chip CM5 is utilized for the immobilization of a PentaHis antibody for capture of the His-tagged p53. The level of capture is ~200 response units (1 response unit corresponds to 1 pg of protein per mm 2). The concentration of MDM2 protein is kept constant at 300 nM. Nutlin-3 is dissolved in DMSO at 10 mM and further diluted to make a concentration series of Nutlin-3 in each MDM2 test sample. The assay is run at 25°C in running buffer (10 mM Hepes, 0.15 M NaCl, 2% DMSO). MDM2-p53 binding in the presence of Nutlin-3 is calculated as a percentage of binding in the absence of Nutlin-3 and IC50 is calculated
Cell Research:[1]
  • Cell lines: HCT116, RKO, SJSA-1, SW480, and MDA-MB-435
  • Concentrations: ~30 μM
  • Incubation Time: 48 h
  • Method: MTT assay

Solubility (25°C)

In vitro

 DMSO 100 mg/mL
(171.97 mM)
Ethanol 100 mg/mL
(171.97 mM)
Water Insoluble

Chemical Information

Molecular Weight 581.49
Formula

C30H30Cl2N4O4
CAS No. 675576-97-3
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CC(C)OC1=C(C=CC(=C1)OC)C2=NC(C(N2C(=O)N3CCNC(=O)C3)C4=CC=C(C=C4)Cl)C5=CC=C(C=C5)Cl

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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.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

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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.

Handling Instructions

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