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抑制剂描述:

产品名称:NUTLIN 3

产品别名:见爱必信官网

英文别名:NUTLIN 3

靶点:MDM2

CAS:890090-75-2

纯度:>98%

外观:见爱必信官网

保存方法:Store at -20℃ for one year(Powder);Store at 2-4℃ for two weeks;Store at -20℃ for six months after dissolution.

描述:

Nutlin-3是一种有效的,选择性Mdm2(它自身和p53的环指依赖性泛素蛋白连接酶)拮抗剂,无细胞试验中IC50为90 nM;可稳定p53缺陷细胞中的p73。

溶解性:DMSO :100 mg/mL (171.96 mM)
Ethanol :30 mg/mL (51.59 mM)

体外研究:

Nutlin-3 potently inhibits the MDM2-p53 interaction, leading to the activation of the p53 pathway. Nutlin-3 treatment induces the expression of MDM2 and p21, and displays potent antiproliferative activity with IC50 of ~1.5 μM, only in cells with wild-type p53 such as HCT116, RKO and SJSA-1, but not in the mutant p53 cell lines SW480 and MDA-MB-435. In SJSA-1 cells, Nutlin-3 treatment at 10 μM for 48 hours significantly induces caspase-dependent cell apoptosis by ~45%. Although Nutlin-3 also inhibits the growth and viability of human skin (1043SK) and mouse embryo (NIH/3T3) with IC50 of 2.2 μM and 1.3 μM, respectively, cells remain viable 1 week post-treatment even at 10 μM of Nutlin-3, in contrast with the SJSA-1 cells with viability lost at 3 μM of Nutlin-3 treatment. Nutlin-3 does not induce the phosphorylation of p53 on key serine residues and reveals no difference in their sequence-specific DNA binding and ability to transactivate p53 target genes compared with phosphorylated p53 induced by the genotoxic drugs doxorubicin and etoposide, demonstrating that phosphorylation of p53 on key serines is dispensable for transcriptional activation and apoptosis. Although binding less efficiently to MDMX than to MDM2, Nutlin-3 can block the MDMX–p53 interaction and induce the p53 pathway in retinoblastoma cells (Weri1) with IC50 of 0.7 μM. Nutlin-3 at 30 μM also disrupts endogenous p73-HDM2 interaction and enhances the stability and proapoptotic activities of p73, leading to the dose-dependent cell growth inhibition and apoptosis induction in cells without wild-type p53.

体内研究:Oral administration of Nutlin-3 at 200 mg/kg twice daily for 3 weeks significantly inhibits the tumor growth of SJAS-1 xenografts by 90%, comparable with the effect of doxorubicin treatment with 81% inhibition of tumor growth.

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