病毒转录调节器通过多种机制广泛重新连接宿主途径
bioRxiv : the preprint server for biology
|January 23, 2026
概括
病毒转录调节器 (vTRs) 重编程宿主基因以帮助病毒复制和逃避. 这项研究分析了95种vTRs,揭示了各种机制和与自身免疫性疾病等人类疾病的联系.
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 已知数百种病毒转录调节剂 (vTRs),但它们操纵宿主细胞的精确机制在很大程度上是未知的.
- 了解vTRs如何重编程宿主基因网络对于破译病毒病原和开发抗病毒策略至关重要.
研究的目的:
- 从人类病毒中系统地分析一组多样化的95个vTRs.
- 阐明vTRs调节宿主基因表达和细胞通路的机制.
- 为了确定vTR活动和人类疾病之间的潜在联系.
主要方法:
- 使用多项测试对95个vTR进行系统的功能分析.
- 对与DNA,人类转录因子 (hTF) 和染色质重塑复合物的vTR相互作用的分析.
- 评估vTRs作为基因表达的激活剂或抑制剂的作用.
主要成果:
- vTRs扰乱关键宿主通路,包括免疫,细胞增殖/死亡和信号传递.
- vTRs采用多种机制,包括直接DNA结合,hTF合作/对抗以及染色质重塑.
- vTRs可以充当转录激活剂或抑制剂,招募类似于hTFs的蛋白质谱.
- 许多vTRs在与自身免疫,神经和心血管疾病相关的基因位置中的基因失调.
结论:
- vTRs是人类转录的多功能调节器,在多样化机制的同时汇聚到关键宿主途径上.
- 在病毒复制,持久性和免疫逃避中,vTRs起着重要的作用.
- 这项研究为了解vTR功能和开发有针对性的抗病毒疗法提供了宝贵的资源,这对疾病的发病有影响.
相关概念视频
Master Transcription Regulators
7.7K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.7K
Master Transcription Regulators
2.7K
2.7K
Cooperative Binding of Transcription Regulators
7.2K
Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome. Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form...
7.2K
Cooperative Binding of Transcription Regulators
2.5K
2.5K
Transcriptional Regulation: Riboswitches
618
Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
618
Epigenetic Regulation
33.5K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.5K


