Tumor Initiating Cells, Cell Cycle Control and Cancer Stem Cells
Tumor Initiating Cells, Cell Cycle Control and Cancer Stem Cells
Tumor Initiating Cells, Cell Cycle Control and Cancer Stem Cells
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As D type cyclins accumulate during G1 they serve two functions:<br />
1. Catalytic: Cyclin D-dependent kinases phosphorylate Rb, contributing to its<br />
inactivation.<br />
2. Non-catalytic:<br />
- CyclinD-CDK complexes bind <strong>and</strong> sequester p21/p27 proteins,<br />
leading to free E-CDK2 activity, which further inactivates pRb.