Regulators of G1 cyclin–dependent kinases and cancers

Cancer and Metastasis Reviews - Tập 22 - Trang 435-449 - 2003
Mong-Hong Lee1, Heng-Yin Yang1
1Department of Molecular and Cellular Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, USA

Tóm tắt

The mammalian cell cycle can be divided into four phases: G1 (gap phase 1), S (DNA synthesis), G2 (gap phase 2), and M (mitosis). Progression through each phase of the cell cycle is delicately controled by the activity of different cyclin-dependent kinases (CDKs) and their regulatory subunits known as cyclins. CDK2, CDK4, CDK6 and their associated cyclins control the G1 to S phase transition. The association of CDK4 or CDK6 with D-type cyclins is critical for G1 phase progression, whereas the CDK2-cyclin E complex is important for initiation of the S phase. Cancer can originate from dysregulation of these regulators. A variety of intrinsic and extrinsic signals were recently identified to regulate these G1 or G1/S CDKs and cyclins. Here we discuss the regulators of these protein kinases at different mechanistic level with a hope that these insights can be applied to develop therapeutic strategies for cancer treatment.

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