相关实验视频
Updated: Jun 9, 2025

13:00
Engineering Antiviral Agents via Surface Plasmon Resonance
Published on: June 14, 2022
2.3K
SARS-CoV-2核体蛋白对抗GADD34-通过非典型焦点介导的先天性免疫路径
Jie Liu1,2, Guanwen Guan2, Chunxiu Wu2
1Key Laboratory of Novel Targets and Drug Study for Neural Repair of Zhejiang Province, School of Medicine, Hangzhou City University, Hangzhou 310015, China.
Molecules (Basel, Switzerland)
|October 26, 2024
概括
在SARS-CoV-2核体蛋白形成非典型的压力颗粒,阻断GADD34表达和IRF3激活. 这会损害宿主免疫力,有助于病毒复制和致病的产生.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 压力颗粒 (SGs) 在病毒感染期间对宿主免疫是至关重要的.
- 非典型的SG (aSG) 可以促进病毒复制.
- 在SARS-CoV-2核体 (N) 蛋白形成N+/G3BP1+焦点 (N+焦点),抑制宿主免疫力.
研究的目的:
- 阐明SARS-CoV-2 N蛋白质对抗宿主免疫力的机制.
- 调查GADD34在SARS-CoV-2 N蛋白质介导免疫抑制中的作用.
主要方法:
- 研究了SARS-CoV-2 N蛋白,GADD34 mRNA和G3BP1.1之间的相互作用.
- 分析了N+焦点形成对GADD34表达和IRF3核转位的影响.
- 评估了GADD34抑制对先天性免疫基因转录和病毒复制的影响.
主要成果:
- 在SARS-CoV-2中,N蛋白通过将GADD34 mRNA隔离到N+焦点来抑制GADD34的表达.
- GADD34对于IRF3核转位和干扰素基因转录至关重要.
- SARS-CoV-2 N蛋白质诱导的GADD34抑制会损害先天免疫力,促进病毒感染.
结论:
- 在SARS-CoV-2中,N蛋白利用N+焦点来破坏GADD34-IRF3天生的免疫路径.
- 这种机制代表了病变发生的关键病毒策略.
- 针对这种途径为SARS-CoV-2感染提供了潜在的治疗影响.
相关概念视频
Coat Assembly and GTPases
3.5K
Vesicles incorporate different coat protein subunits in different cell locations, which changes the properties of the coat, such as the shape and geometry of the transport vesicles. Thus, vesicle coat proteins also play a significant role in cargo selection.
Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
Coat assembly depends on the local availability of phosphatidylinositol phosphates or PIPs and GTP-binding proteins. Adaptor proteins, which link the coat proteins to the membrane, bind to these PIPs and play a crucial role in controlling...
3.5K
Single Nucleotide Polymorphisms-SNPs
14.1K
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
14.1K
GPCR Desensitization
5.8K
G protein-coupled receptor (GPCR) signaling plays a crucial role in cell functioning. GPCR desensitization is an equally essential process. It allows cells to respond to changing environments and regain sensitivity to new stimuli while preventing unnecessary stimulation when no longer needed. Prolonged exposure to stimuli leads to GPCR desensitization. It involves blocking the receptors from binding and activating additional G proteins. This inhibits activation of downstream effectors, thereby...
5.8K
Rab Proteins
3.9K
Rab proteins constitute the largest family of monomeric GTPases, of which 70 members are present in humans. Rab proteins and their effectors regulate consecutive stages of vesicle transport such as vesicle transport, docking, and fusion to the correct recipient membrane.
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
Rab proteins switch between a cytosolic, GDP-bound inactive state and a membrane-anchored, GTP-bound active state. By themselves, Rabs show slow rates of GDP/GTP exchange and GTP hydrolysis. Thus, Rab proteins are considered...
3.9K
Regulation of Nuclear Protein Sorting
2.4K
Nuclear protein sorting regulates nucleus composition and gene expression, crucial for determining the fate of a eukaryotic cell. Hence, the entry and exit of molecules across the nuclear envelope is a tightly controlled process. Nuclear protein sorting can be inhibited by one of the following ways: 1) masking cargo signal sequences, 2) modifying the nuclear receptor's affinity for cargo, 3) controlling the nuclear pore size, 4) retaining the cargo during its transit to the cytosol or the...
2.4K
siRNA - Small Interfering RNAs
16.6K
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
16.6K

