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Molecular Pathways: Targeting the Protein Kinase Wee1 in Cancer
Ist Teil von
Clinical cancer research, 2017-08, Vol.23 (16), p.4540-4544
Ort / Verlag
United States: American Association for Cancer Research Inc
Erscheinungsjahr
2017
Quelle
Free E-Journal (出版社公開部分のみ)
Beschreibungen/Notizen
Wee1 is a protein kinase that regulates the G
checkpoint and prevents entry into mitosis in response to DNA damage. Cyclin-dependent kinases (CDK) are a family of 14 serine/threonine protein kinases that coordinate the progression through the cell cycle. The Cdc2/cyclin B complex controls the progression from G
into mitosis. There are two mechanisms by which the G
checkpoint is initiated in response to DNA damage: phosphorylation of Cdc25c by CHK1 and of the Wee1 kinase, which phosphorylates Cdc2. Blockade at the G
checkpoint is especially important for p53-mutant cells because these tumors mainly rely on DNA repair at the G
checkpoint. AZD1775 (formerly MK-1775) is a small-molecule, pyrazol-pyrimidine derivative and potent and ATP-competitive specific inhibitor of the Wee1 kinase. Several preclinical and clinical studies demonstrated encouraging antitumor effects with manageable side effects of the combination of Wee1 inhibition and DNA-damaging agents. Promising combination schedules are being investigated at the moment, for example, combining PARP inhibition and Wee1 inhibition. Also, a weekly schedule with carboplatin and AZD1775 warrants investigation aimed at further improving the antitumor effect.
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