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Do truncated cyclins contribute to aberrant cyclin expression in cancer?

机译:截短的细胞周期蛋白是否会导致细胞周期蛋白的异常表达?

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摘要

Cyclin overexpression is found in several types of cancer. Genetic events that place cyclin genes under the control of active promoters or that increase cyclin gene copy number account for most instances of cyclin overexpression. New paradigms for aberrant cyclin expression have been suggested by studies showing that truncated cyclins are expressed in specific subsets of cancer. The altered cyclins lack regulatory sequences (compared to the wild-type protein) that modulate their stability, subcellular localization or cdk-associated kinase activity. In this communication, we review the current literature and assess the role of truncated cyclins D, E, A, B, C and virus encoded-cyclin D (K-cyclin) in the development of cancer. We also report the molecular characteristics, expression patterns and if available, prognostic significance of these proteins.
机译:在几种类型的癌症中发现细胞周期蛋白过表达。将细胞周期蛋白基因置于活性启动子控制下或增加细胞周期蛋白基因拷贝数的遗传事件是细胞周期蛋白过表达的大多数实例。研究表明,截短的细胞周期蛋白在特定的癌症亚群中表达,因此提出了异常的细胞周期蛋白表达的新范式。改变的细胞周期蛋白缺乏调节序列(与野生型蛋白相比),可调节其稳定性,亚细胞定位或与cdk相关的激酶活性。在本交流中,我们回顾了当前的文献并评估了截短的细胞周期蛋白D,E,A,B,C和病毒编码的细胞周期蛋白D(K细胞周期蛋白)在癌症发展中的作用。我们还报告了这些蛋白质的分子特征,表达模式以及可能的预后意义。

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