病毒非编码RNA劫持宿主Pumilio蛋白质以调节宿主转录
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Updated: Jan 9, 2026

09:05
MicroRNA-based Regulation of Picornavirus Tropism
Published on: February 6, 2017
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1Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
bioRxiv : the preprint server for biology
|December 11, 2025
概括
疹病毒 saimiri非编码RNAs (ncRNAs) 结合宿主Pumilio蛋白 (PUM1/2),改变T细胞状态并促进病毒持久性. 这种相互作用揭示了淋巴细胞中病毒重编程的新机制.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 病毒非编码RNAs (ncRNAs) 在持久感染中发挥着不同的作用.
- 疹病毒 saimiri (HVS) 在潜伏期表达小核RNA (HSURs).
- 主体RNA结合蛋白是病毒ncRNA的关键相互作用体,但它们的作用尚未完全理解.
研究的目的:
- 研究HVS HSURs与宿主RNA结合蛋白之间的相互作用.
- 确定HSUR-Pumilio相互作用在T细胞和B细胞中的功能后果.
- 阐明这些相互作用在病毒持久性和宿主细胞重编程中的作用.
主要方法:
- 使用Pumilio响应元素 (PREs) 对HSUR1和HSUR2与Pumilio蛋白 (PUM1和PUM2) 结合的分析.
- 通过测量像CXCR3和CD57这样的表面标记物来评估T细胞状态 (Jurkat细胞) 的变化.
- 研究BJAB B细胞中的基因调控和PUM1/2耗尽的影响.
主要成果:
- HSUR1和HSUR2通过保存的PREs与PUM1和PUM2结合.
- 野生类型的HSURs,但不是PRE突变变异型,诱导一个效能/记忆类型的T细胞状态.
- PUM1或PUM2的耗尽模仿HSUR诱导的T细胞变化,其中PUM1具有主导作用.
- 在B细胞中,HSUR1介导的基因调节显示了细胞类型的特异性,但有一些反向效应.
结论:
- 米里奥蛋白 (PUM1/2) 是g-herpesviral ncRNAs (HSURs) 的关键宿主伙伴.
- HSURs隔离PUM蛋白质,影响T和B细胞状态并促进病毒的持久性.
- 这种相互作用代表了由病毒ncRNAs重新编程淋巴细胞的新机制.
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