AST1306 is a novel inhibitor of EGFR and HER2 (IC50 = 0.5 nM and 3 nM respectively)
EGFR (epidermal growth factor receptor) is a cell-surface receptor tyrosine kinase. The receptor activation leads to dimerization and tyrosine autophosphorylation. It induces a cascade of downstream cellular responses such as modification in gene expression, cell proliferation and cytoskeletal rearrangement etc. HER2 is a member of the epidermal growth factor and is associated with breast and ovarian cancers.
AST1306 selectively blocked EGFR and HER2 kinase activities in a cell-free assay. The tyrosine kinase activity of EGFR mutant T790M/L858R was also inhibited by AST1306 in intact cell and cell-free assays. In addition, AST1306 attenuated the EGFR and HER2 phosphorylation and downstream substrates. 
In ErbB2-overexpressing xenograft and FVB-2/Nneu transgenic mouse model, AST1306 potently inhibited tumor growth. In SK-OV-3 xenograft model, AST1306 caused a quick and long-lasting (≥24h) inhibition of EGFR and HER2. 
1. Xie H, Lin L, Tong L et al. AST1306, a novel irreversible inhibitor of the epidermal growth factor receptor 1 and 2, exhibits antitumor activity both in vitro and in vivo. PLoS One. 2011;6(7):e21487.
|Physical Appearance||A solid|
|Storage||Store at -20°C|
|Synonyms||AST1306; AST 1306|
|Solubility||≥22.45mg/mL in DMSO|
|Shipping Condition||Evaluation sample solution : ship with blue ice.All other available size: ship with RT , or blue ice upon request|
|General tips||For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.|