Protein kinases have been recognized as dominant regulators of all aspects of tumor progression, including tumorigenesis,proliferation, invasion, and metastasis [1].During the activation of protein kinases, the binding of ligands (e.g., epidermal growth factor, transforming growth factor-α, and amphiregulin) can cause dimerization, which promotes the cell growth and triggers a cascade of downstream signaling pathways.Considering the versatile role of protein kinases,targeting of protein kinases is currently one of the most successful strategies in the development of anti-cancer drugs.