Abstract
Loss of normal cell cycle regulation is the hallmark of human cancers, and alteration of the components involved in cell cycle regulation occurs in most human tumors. This suggests that Cyclin dependent kinases (CDKs) are an attractive target for the development of pharmacological agents for the treatment of cancer. Recently, CDK family members that are not directly involved in cell cycle regulation have been identified. This includes CDK7, CDK8, and CDK9, which participate in transcription regulation, and CDK5, which plays a role in neuronal and secretory functions. Given the involvement of CDKs in multiple cellular processes, development of selective small molecule inhibitors for specific CDKs is expected to help clarify whether improved specificity of cell cycle CDK inhibitors will enhance their therapeutic potential in cancer treatment. Selective inhibitors are also needed as tools to explore the biology of diseases in which CDKs may participate and to help develop therapeutics to treat them. Intensive screening and drug design based on CDK/inhibitor co-crystal structure and SAR studies have led to the identification of a large variety of chemical inhibitors of CDKs. Although they are competitive with ATP at the catalytic site, their kinase selectivity varies greatly, and inhibitors selective for certain CDKs have begun to be identified. There are currently two categories of selective CDK inhibitors: those that are selective for CDK2 and CDK1 and those that are selective for CDK4/6. These two types of inhibitors have different effects on tumor cells and are expected to be useful in the treatment of cancer.
Keywords: cyclin-dependent kinase, cdk4, cdk6, cdk2, cdk inhibitor
Current Topics in Medicinal Chemistry
Title: Recent Advances in the Development of Selective Small Molecule Inhibitors for Cyclin-Dependent Kinases
Volume: 5 Issue: 2
Author(s): Hiroshi Hirai, Nobuhiko Kawanishi and Yoshikazu Iwasawa
Affiliation:
Keywords: cyclin-dependent kinase, cdk4, cdk6, cdk2, cdk inhibitor
Abstract: Loss of normal cell cycle regulation is the hallmark of human cancers, and alteration of the components involved in cell cycle regulation occurs in most human tumors. This suggests that Cyclin dependent kinases (CDKs) are an attractive target for the development of pharmacological agents for the treatment of cancer. Recently, CDK family members that are not directly involved in cell cycle regulation have been identified. This includes CDK7, CDK8, and CDK9, which participate in transcription regulation, and CDK5, which plays a role in neuronal and secretory functions. Given the involvement of CDKs in multiple cellular processes, development of selective small molecule inhibitors for specific CDKs is expected to help clarify whether improved specificity of cell cycle CDK inhibitors will enhance their therapeutic potential in cancer treatment. Selective inhibitors are also needed as tools to explore the biology of diseases in which CDKs may participate and to help develop therapeutics to treat them. Intensive screening and drug design based on CDK/inhibitor co-crystal structure and SAR studies have led to the identification of a large variety of chemical inhibitors of CDKs. Although they are competitive with ATP at the catalytic site, their kinase selectivity varies greatly, and inhibitors selective for certain CDKs have begun to be identified. There are currently two categories of selective CDK inhibitors: those that are selective for CDK2 and CDK1 and those that are selective for CDK4/6. These two types of inhibitors have different effects on tumor cells and are expected to be useful in the treatment of cancer.
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Hirai Hiroshi, Kawanishi Nobuhiko and Iwasawa Yoshikazu, Recent Advances in the Development of Selective Small Molecule Inhibitors for Cyclin-Dependent Kinases, Current Topics in Medicinal Chemistry 2005; 5 (2) . https://dx.doi.org/10.2174/1568026053507688
DOI https://dx.doi.org/10.2174/1568026053507688 |
Print ISSN 1568-0266 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4294 |
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