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Siremadlin (HDM201) is a novel, highly potent and selective inhibitor of the p53-Mdm2 interaction with affinity constant for Mdm2 in the picomolar range and a selectivity ratio greater than 10000-fold vs Mdm4.
In vitro: Siremadlin (HDM201) binds to the p53 binding-site of the Mdm2 protein, disrupting the interaction of the two proteins and leading to the activation of the p53 pathway. It induces robust p53-dependent cell cycle arrest and apoptosis in human p53 wild-type tumor cells. HDM201 exhibits highly selectivity across a panel of cancer cell lines.
In vivo: Siremadlin (HDM201) displays desirable pharmacokinetic and pharmacodynamic profiles in animals together with excellent oral bioavailability. Application of the compound using various dosing schedules triggers rapid and sustained activation of p53-dependent pharmacodynamic biomarkers resulting in tumor regression in multiple xenografted models of p53 wild-type human cancers.
| Cell Experiment | |
|---|---|
| Cell lines | Melanoma cells |
| Preparation method | Melanoma cells were seeded in 96-well plates 24 h before 72 h of treatment with nutlin-3 RG7388, HDM201, GSK2830371 or combinations. The cells were fixed using Carnoy’s fixative followed by Sulforhodamine B (SRB) assay. |
| Concentrations | 0.2 μM |
| Incubation time | 72 h |
| Animal Experiment | |
|---|---|
| Animal models | Mice |
| Formulation | 0.5% methylcellulose and 0.1% Tween 80 |
| Dosages | 100 mg/kg |
| Administration | orally |
| Molecular Weight | 555.41 |
| Formula | C26H24Cl2N6O4 |
| CAS Number | 1448867-41-1 |
| Solubility (25°C) | 100 mg/mL in DMSO |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Related Mdm2 Products |
|---|
| Nutlin-3
Nutlin-3 is a selective MDM2 (mouse double minute 2) antagonist with IC50 of 90 nM. Nutlin-3 induces apoptosis in cancer cells. Nutlin-3 treatment induces the expression of MDM2 and p21, and displays potent antiproliferative activity with IC50 of ~1.5 μM in cells with wild-type p53 such as HCT116, RKO and SJSA-1. |
| NSC 66811
NSC 66811 is a potent MDM2 inhibitor with Ki value of 120 nM, which disrupts MDM2-p53 interaction and activates p53 function. |
| Nutlin-3a
Nutlin-3a, the active enantiomer of Nutlin-3, is a potent murine double minute (MDM2) inhibitor (IC50=90 nM). Nutlin-3a inhibits the p53/MDM2 interaction with IC50 of 90 nM. |
| Nutlin-3b
Nutlin-3b 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. |
| SL-01
SL-01 is a p53-Mdm2 interaction inhibitor with IC50 of 3.18 μM. |
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