CDK
CDK (Cyclin-dependent kinases) is a group of serine/threonine kinases. It is activated by binding to cyclin and participates in the regulation of cell cycle.
Most of the known cyclin-CDK complexes regulate the progression through the cell cycle. Animal cells contain at least nine CDKs, four of which, CDK1, 2, 3, and 4, are directly involved in cell cycle regulation. In mammalian cells, CDK1, with its partners cyclin A2 and B1, alone can drive the cell cycle. Another one, CDK7, is involved indirectly as the CDK-activating kinase. A cyclin-dependent kinase inhibitor (CKI) is a protein that interacts with a cyclin-CDK complex to block kinase activity, usually during G1 or in response to signals from the environment or from damaged DNA.
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Ro-3306是CDK1高效选择性抑制剂，对CDK1/cyclin B1的Ki值为35nM。
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PHA-793887是一种新型有效的CDK2，CDK5和CDK7抑制剂，IC50分别为8 nM， 5 nM 和10 nM，作用于CDK2， 5，和7比作用于CDK1， 4，和9选择性高6倍以上。
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S-Ruxolitinib是第一个应用到临床的，有效的，选择性JAK1/2抑制剂，IC50为3.3 nM/2.8 nM，作用于JAK1/2比作用于JAK3选择性高130倍以上。
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AT9283是一种有效的JAK2/3抑制剂，IC50为1.2 nM/1.1 nM；对Aurora A/B， Abl(T315I)也有效。
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Cerdulatinib (PRT-062070)是一种具有口服活性的多靶点酪氨酸激酶抑制剂，对JAK1/JAK2/JAK3/TYK2和Syk的IC50分别为12 nM/6 nM/8 nM/0.5 nM和32 nM。也能够抑制测试的其他19种激酶，IC50均低于200 nM。
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