Protein kinases are arguably the most tractable candidates for development of new therapies to treat cancer.Deep sequencing of breast cancer cell lines indicates each express 375or so kinases,representing nearly 75% of the kinome.A rich network both downstream and upstream from key oncogenic kinases includes both tyrosine and serine/threonine kinases,giving plasticity and resiliency to the cancer cell kinome.
Protein kinases have proven to be highly tractable candidates for development of new cancer therapies with over 130 kinase-specific inhibitors currently in Phase 1-3 clinical trials [ 1].Approximately 518 protein kinases are encoded by the human genome,collectively referred to as the kinome.