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Overexpression of p53 tumor suppressor protein in malignant cells induces cell cycle arrest, or alternatively, apoptosis thereby indicating that additional factors may contribute to the p53-mediated outcome. Comparison of the experimental protocols revealed that the construct encoding wild-type (wt) p53 was expressed in cells of different origin. Therefore, we decided to determine whether the intrinsic...
Escape from the proper control of the cell cycle by up-regulation of cyclins or aberrant activation of cyclin-dependent kinases (CDKs) as well as by inactivation of cellular inhibitors of CDKs (CKI) leads to malignant transformation. Loss of cellular CKIs in cancers provided a rationale for development of pharmacological inhibitors of CDKs. Recently synthesized CKIs, e.g., purine derivatives such...
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