寨卡病毒的非编码RNA 影响发育中的大脑组织中Wnt信号和亲细胞断路径之间的相互作用
Andrii Slonchak1,2, Harman Chaggar3, Julio Aguado3
1School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia.
Viruses
|May 27, 2023
概括
寨卡病毒 (ZIKV) 亚基因组病毒RNA (sfRNA) 通过诱导神经前体亡来破坏胎儿大脑发育. 这种病毒RNA抑制神经发育途径,导致先天性寨卡综合征.
科学领域:
- 神经科学是一个神经科学.
- 病毒学 病毒学
- 发展生物学 发展生物学
背景情况:
- 寨卡病毒 (ZIKV) 导致先天性寨卡综合征,其特征是严重的神经发育异常.
- 病毒非编码RNA (亚基因组黄病毒RNA,sfRNA) 在发育中的大脑中与ZIKV病原发生有关.
- 之前的研究表明,ZIKV sfRNA诱导神经前体亡.
研究的目的:
- 在发育中的大脑组织中识别受ZIKV sfRNA影响的生物过程和信号通路.
- 阐明ZIKV sfRNA在抑制神经发育中的作用.
主要方法:
- 使用由诱导多能干细胞 (ihPSC) 衍生出来的3D人类大脑器官作为活体模型.
- 被野生型 (WT) ZIKV (产生sfRNA) 和sfRNA缺乏突变型ZIKV.感染的有机体.
- 使用RNA-Seq进行全球转录组分析,随后进行基因组丰富分析和网络重建.
主要成果:
- ZIKV sfRNA 生产改变了大脑器官中的1000多个基因的表达.
- WT ZIKV感染激活了亲亡途径,并显著降低了对神经元分化和大脑发育至关重要的基因的调节.
- 缺少sfRNA的ZIKV没有诱导这些发育抑制.
- sfRNA对大脑发育途径的影响涉及Wnt信号传递和亲细胞亡途径之间的交叉声.
结论:
- 在感染期间,ZIKV sfRNA对于抑制神经发育至关重要.
- sfRNA通过干扰关键的发育信号通路,在ZIKV病变发生过程中发挥关键作用.
- 了解sfRNA的机制可以了解先天性寨卡综合征和潜在的治疗点.
关键词:
没有Wnt信号.寨卡病毒 寨卡病毒灭症 (apoptosis) 是一种死亡的过程.大脑发育大脑发育的大脑发育弗拉维病毒 (flavivirus) 是一种病毒.没有编码的RNA.的sfRNARNAs 的时间.系统病毒学病毒学.翻译学 翻译学 翻译学 翻译学更多相关视频
09:39Establishing Mouse Models for Zika Virus-induced Neurological Disorders Using Intracerebral Injection Strategies: Embryonic, Neonatal, and Adult
Published on: April 26, 2018
8.7K
09:11Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons
Published on: August 23, 2016
20.8K
相关概念视频
Experimental RNAi
6.2K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.2K
RNA Interference
26.1K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
26.1K
piRNA - Piwi-interacting RNAs
6.9K
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
6.9K
