(±)-Nutlin-3是一种有效的，选择性的Mdm2(依赖环指状的泛素蛋白连接酶和p53)拮抗剂，IC50为90 nM。可稳定p53缺陷的细胞中的p73。Nutlin-3有效抑制MDM2-p53相互作用，IC50 为 90 nM, 导致p53通路激活。Nutlin-3 处理含野生型p53的细胞，如HCT116, RKO 和SJSA-1,诱导MDM2 和p21表达, 且具有有效的抗增殖活性，IC50 为~1.5 μM, 但是作用于含突变型p53的细胞系 SW480和 MDA-MB-435没有效果。10 μM Nutlin-3处理 SJSA-1细胞48小时，显著诱导caspase依赖的细胞凋亡，凋亡达~45%。

＞98%

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

DMSO ：10 mM

MDM-2_p53

Nutlin 3 is an inhibitor of the MDM2-p53 interaction. In particular, co-treatment of p53-positive HCT116 cells with 1 μM of Inauhzin and 2 μM of Nutlin 3 more significantly activated p53 as measured by its protein level as well as the level of its target p21, PUMA or cleaved PARP as indication of apoptosis. Nutlin 3 is a small-molecule inhibitor that acts to inhibit MDM2 binding to p53 and subsequent p53-dependent DNA damage signaling. As a single agent, Nutlin 3 (2-10 μM) stabilizes p53 and p21WAF levels and is toxic to WTp53-22RV1 cells (IC50, 4.3 μM) but has minimal toxicity toward p53-deficient cells (IC50, >10 μM). Nutlin 3 induces p53 and p21WAF expression in a dose-dependent manner in 22RV1 cells. Short-term cell cycle assays show that, at a dose of 10 μM, Nutlin 3 increasea slightly the G1-phase fraction and decreasea S-phase fraction of all three cell lines.

Nutlin 3 can suppress the growth of xenograft tumors derived from human osteosarcoma or leukemia cells, the anti-tumor activity of Nutlin 3 even at the dose of 200 mg/kg per oral administration is marginal in an HCT116-derived xenograft tumor model. Nutlin 3 may be a useful adjunct to improve the therapeutic ratio using precision radiotherapy targeted to hypoxic cells and warrants further study in vivo.

Inauhzin and Nutlin3 synergistically activate p53 and suppress tumor growth.
Zhang Y,et al. Cancer Biol Ther. 2012 Aug;13(10):915-24. PMID: 22785205.