PDK-1 (磷酸肌醇依赖性蛋白激酶-1)

PDK-1 (3-Phosphoinositide-dependent protein kinase 1), a member of the protein A, G and C (AGC) family of proteins, is a Ser/Thr protein kinase. PDK-1, is the pivotal node in the PI3K pathway, has a key role in insulin and growth-factor signalling through phosphorylation and subsequent activation of a number of other AGC kinase family members, such as protein kinase B.

PDK-1 is responsible for the regulation of cell proliferation and migration and it also has been found to play a key role in different cancers, pancreatic and breast cancer amongst others. Many cancer-driving mutations induce activation of PDK-1 targets including Akt, S6K (p70 ribosomal S6 kinase) and SGK. Thus, PDK1 is a critical activator of multiple pro-survival and oncogenic protein kinases, for which it has garnered considerable interest as an oncology drug target.