ALW-II-41-27 is an RG-25 (RG25) structural analog that exhibits enhanced type II kinase inhibitor activity against ephrin type-A receptor 2/EphA2/ECK (IC50 = 11 nM vs 770 nM with NG25) by targeting the ATP-binding pocket and an allosteric site next to the “DFG” motif. ALW-II-41-27 inhibits constitutive and ephrin A1-induced EphA2 tyrosine phosphorylation (0.1-1 μM; H358), effectively suppressing EphA2-dependent cancer survival in vitro (0.1-1 μM for 72 hrs; NSCLC) and xenograft tumor growth in mice in vivo (15-30 mg/kg b.i.d. i.p.; H358 NSCLC & A375 melanoma). Note: ALW-II-41-27 and RG-25 (RG25) display very similar kinase-targeting profiles with EphA2 being a notable exception, RG25 can therefore serve as a control for ALW-II-41-27 when probing EphA2-mediated cellular functions.
Type II ATP-competitive EphA2 inhibitor that inhibits EphA2 tyrosine phosphorylation and EphA2-dependent NSCLC survival in vitro and in vivo.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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The Journal of clinical investigation, 124(5), 2037-2049 (2014-04-10)
Genome-wide analyses determined previously that the receptor tyrosine kinase (RTK) EPHA2 is commonly overexpressed in non-small cell lung cancers (NSCLCs). EPHA2 overexpression is associated with poor clinical outcomes; therefore, EPHA2 may represent a promising therapeutic target for patients with NSCLC.
Despite the success of treating EGFR-mutant lung cancer patients with EGFR tyrosine kinase inhibitors (TKI), all patients eventually acquire resistance to these therapies. Although various resistance mechanisms have been described, there are currently no FDA-approved therapies that target alternative mechanisms
The Eph family of receptor tyrosine kinases has drawn growing attention due to their role in regulating diverse biological phenomena. However, pharmacological interrogation of Eph kinase function has been hampered by a lack of potent and selective Eph kinase inhibitors.
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