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首页> 外文期刊>Cell cycle >Modulation of the ARF-p53 pathway by the small DNA tumor viruses.
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Modulation of the ARF-p53 pathway by the small DNA tumor viruses.

机译:小DNA肿瘤病毒对ARF-p53途径的调节。

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摘要

The small DNA tumor viruses encode proteins that subvert many of the pivotal growth regulatory pathways within the cell to facilitate their own replication. The cell responds to viral infection/proteins by activating the p53 tumor suppressor pathway. Activation of p53 could impair a productive viral infection at many levels, including the inhibition of viral DNA replication and/or the premature death of infected cells. Therefore, DNA viruses encode proteins that inactivate the p53 tumor suppressor pathway. Understanding how DNA viral proteins activate/inactivate the p53 pathway has provided invaluable insights into tumorigenesis. Recent studies with polyoma virus have identified a viral protein (PyST) that inhibits ARF-mediated activation of p53, and revealed a novel role for PP2A in the regulation of the ARF-p53 tumor suppressor pathway.
机译:小型DNA肿瘤病毒编码的蛋白质破坏了细胞内许多关键的生长调节途径,从而促进了它们自身的复制。该细胞通过激活p53肿瘤抑制途径来响应病毒感染/蛋白质。 p53的激活可能在许多水平上损害生产性病毒感染,包括抑制病毒DNA复制和/或感染细胞过早死亡。因此,DNA病毒编码使p53肿瘤抑制途径失活的蛋白质。了解DNA病毒蛋白如何激活/灭活p53途径为肿瘤发生提供了宝贵的见解。多瘤病毒的最新研究已经发现了一种病毒蛋白(PyST),可以抑制ARF介导的p53激活,并揭示PP2A在调节ARF-p53肿瘤抑制途径中的新作用。

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