AST-1306 TsOH,1050500-29-2

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抑制剂描述：

产品名称：AST-1306 TsOH

产品别名：见爱必信官网

英文别名：AST-1306 TsOH

靶点：EGFR

CAS：1050500-29-2

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：

AST-1306是一种新型，不可逆的EGFR和ErbB2抑制剂，IC50分别为0.5 nM和3 nM，对突变型EGFR T790M/L858R也有效，作用于过表达ErbB2的细胞更有效，作用于ErbB家族比作用于其他激酶选择性高3000倍。AST-1306选择性抑制EGFR和ErbB2酪氨酸激酶活性。AST-1306也有效抑制T790M/L858R双突变型EGFR，IC50为12 nM。AST-1306效果比Lapatinib高500多倍。

溶解性：DMSO ：114 mg/mL (183.6 mM)

体外研究：

AST-1306 also ErB2 and EGFR T790M/L858R double mutant. AST-1306 is approximately 500-fold more potent than lapatinib and more than 3000-fold selective for ErbB family kinases over other kinase families including PDGFR, KDR and c-Met. AST-1306 might covalently bind to specific amino acid residues of EGFR and ErbB2. AST-1306 acts in a concentration dependent manner to significantly inhibit the growth of HIH3T3-EGFR T790M/L858R cells. AST-1306 effectively suppresses EGFR phosphorylation in HIH3T3-EGFR T790M/L858R cells. Moreover, AST-1306 blocks the growth of NCI-H1975 cells that harbor the EGFR T790M/L858R mutation in a concentration-dependent manner. AST-1306 blocks phosphorylation of EGFR and downstream pathways as well. In addition, AST-1306 dose-dependently and markedly inhibits EGF-induced EGFR phosphorylation in A549 cells. AST-1306 inhibits the phosphorylation of EGFR and ErbB2, and downstream signaling in human cancer cells including A549 cells, Calu-3 cells and SK-OV-3 cells.

体内研究：Twice daily oral administration of AST-1306 gives rise to a dramatic prevention of tumor growth in SK-OV-3 and Calu-3 xenograft models. In SK-OV-3 models, tumors nearly disappears after treatment with AST-1306 for 7 days. In contrast, AST-1306 only slightly inhibits the growth of tumor in HO-8910 and A549 xenograft models. Therefore, the antitumor efficacy of AST-1306 is greater in ErbB2-overexpressing tumor models than in models expressing low levels of ErbB2. AST-1306 is well tolerated. Lapatinib displays antitumor activity in these ErbB2-overexpressing tumor models, but AST-1306 is more efficacious than lapatinib in the SK-OV-3 xenograft tumor model when given at the same dose and schedule. In addition, oral administration of AST-1306 twice daily for 3 weeks dramatically suppresses the growth of tumor in the FVB-2/Nneu models. After treatment for 11 days, tumors almost completely disappears. The body weights of the mice reduces by less than 20% during treatment.

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