Staurosporine-derived inhibitors broaden the scope of analog-sensitive kinase technology.
2013
Analog-sensitive (AS) kinase technology is a powerful approach for studying phospho-signaling pathways in diverse organisms and physiological processes. The key feature of this technique is that a kinase-of-interest can be mutated to sensitize it to inhibitor analogs that do not target wild-type (WT) kinases. In theory, this enables specific inhibition of any kinase in cells and in mouse models of human disease. Typically, these inhibitors are identified from a small library of molecules based on the pyrazolopyrimidine (PP) scaffold. However, we recently identified a subset of native human kinases, including the Ephrin A kinase family, that are sensitive to commonly used PP inhibitors. In an effort to develop a bioorthogonal AS-kinase inhibitor and to extend this technique to PP-sensitive kinases, we sought an alternative inhibitor scaffold. Here we report the structure-based design of synthetically tractable, potent, and extremely selective AS-kinase inhibitors based on the natural product staurosporine....
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