DUSP11 - An RNA phosphatase that regulates host and viral non-coding RNAs in mammalian cells.

DUSP11 - An RNA phosphatase that regulates host and viral non-coding RNAs in mammalian cells.
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DUSP11-一种RNA磷酸酶,可调节哺乳动物细胞中的宿主和病毒非编码RNA。

DOI:
10.1080/15476286.2017.1306169
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发表时间:
2017-11-02
期刊:
影响因子:
4.1
通讯作者:
Sullivan CS
Sullivan CS
中科院分区:
生物学3区
文献类型:
--
作者:
Burke JM;Sullivan CS

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双特异性磷酸酶11(DUSP 11)是后生动物中保守的蛋白酪氨酸磷酸酶(PTP)。DUSP 11的细胞底物和生理活性在很大程度上仍然未知。在线虫中,DUSP 11是正常发育和通过尚不清楚的分子机制对内源性RNA进行RNA干扰(endo-RNAi)所必需的。然而,哺乳动物缺乏类似的endo-RNAi途径,因此,DUSP 11在哺乳动物RNA沉默中的作用是出乎意料的。我们实验室最近的工作表明,DUSP 11活性改变了哺乳动物细胞中非经典病毒miRNA的沉默潜力。我们的研究进一步揭示了DUSP 11的直接细胞底物,并表明DUSP 11是控制选择性三磷酸化非编码RNA丰度的调控途径的一部分。在这里,我们强调了最近的研究结果,并提出了新的数据,以促进对哺乳动物DUSP 11在基因沉默过程中的理解,并讨论了DUSP 11在哺乳动物细胞中的新兴生物活性。
Dual-specificity phosphatase 11 (DUSP11) is a conserved protein tyrosine phosphatase (PTP) in metazoans. The cellular substrates and physiologic activities of DUSP11 remain largely unknown. In nematodes, DUSP11 is required for normal development and RNA interference against endogenous RNAs (endo-RNAi) via molecular mechanisms that are not well understood. However, mammals lack analogous endo-RNAi pathways and consequently, a role for DUSP11 in mammalian RNA silencing was unanticipated. Recent work from our laboratory demonstrated that DUSP11 activity alters the silencing potential of noncanonical viral miRNAs in mammalian cells. Our studies further uncovered direct cellular substrates of DUSP11 and suggest that DUSP11 is part of regulatory pathway that controls the abundance of select triphosphorylated noncoding RNAs. Here, we highlight recent findings and present new data that advance understanding of mammalian DUSP11 during gene silencing and discuss the emerging biological activities of DUSP11 in mammalian cells.
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