探索Mopox病毒-宿主传播和病原发生的基因组基础
Brayden Young1,2, Stephanie N Seifert3, Crystal Lawson1,2
1School of Molecular Biosciences, Washington State University, Pullman, Washington, USA.
mSphere
|November 14, 2024
概括
姆波克斯病毒 (MPXV) 进化表明基因组变化使人类适应性增加. 了解这些病毒遗传因素对于预测未来的疫情和制定公共卫生紧急情况的控制策略至关重要.
科学领域:
- 病毒学 病毒学
- 基因组学就是基因组学.
- 公共卫生 公共卫生
背景情况:
- 马普克斯病毒 (MPXV) 是一种具有流行病潜力的动物性病原体,最近宣布成为公共卫生紧急情况.
- 从历史上来看,MPXV疫情被认为是动物性传染病,人类传播有限,MPXV的爆发表明人类的适应能力越来越强.
- 包括Clade IIb和Clade I在内的MPXV爆发突显了适应人类的血统的出现.
研究的目的:
- 为了分析MPXV基因组的基因参与宿主免疫逃避.
- 将MPXV基因含量与相关的Orthopoxvirus进行比较,以确定宿主热带性和病原性的决定因素.
- 检查MPXV菌群之间的毒性因子差异,并了解基因组减少在人类适应中的作用.
主要方法:
- MPXV和相关的Orthopoxvirus的比较基因组学.
- 分析与免疫逃避和宿主适应相关的病毒基因含量.
- 对推动基因组减小和谱系进化的分子机制的审查.
主要成果:
- 特定的MPXV基因的识别,这些基因有助于免疫逃避策略.
- 发现了影响MPXV物种特异性病原和宿主热带性的潜在遗传因素.
- 跨MPXV种群的毒性差异的表征和基因组减少对人类适应的影响.
结论:
- 病毒基因组决定因素是MPXV宿主范围,病变发生和免疫逃避的关键.
- 基因组缩小和进化有助于创建具有增强人类适应性的新型MPXV血统.
- 了解MPXV遗传学对于预测未来的流行病和管理公共卫生威胁至关重要.
相关概念视频
01:51Mechanisms of Retrovirus-induced Cancers
5.0K
Retroviruses are RNA viruses that have been shown to cause cancers in diverse species, including chickens, mice, cats, and monkeys. The RNA genomes of these viruses are first reverse-transcribed into single and then double-stranded DNA (dsDNA) copies. This dsDNA called proviral DNA then integrates into the host genome. Subsequently, the host cell transcribes the proviral DNA in concert with the chromosomal DNA. This leads to the production of viral RNA and proteins that assemble at the host...
5.0K
02:33Retroviruses
12.2K
Retroviruses and retrotransposons both insert copies of their genetic elements into the genome of the host cell. Thus, the viral genes are passed on when the host genome is replicated or translated. A typical retroviral DNA sequence contains 3-4 genes that encode the different proteins required for its structural assembly and function as a molecular parasite. This DNA is transcribed into a single mRNA, which is very similar in structure to conventional mRNAs, i.e., it is capped at the 5’...
12.2K
01:23Cystic Fibrosis: Pathogenesis
192
Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
192
01:29Immune Response Against Viral Pathogens
752
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
752
01:16Viral Replication: Lysogenic Cycle
The lysogenic cycle is a crucial viral replication strategy that allows bacteriophages to persist within host cells without immediately destroying them. This process is primarily observed in temperate phages, such as bacteriophage lambda (λ), which infects Escherichia coli. The cycle allows the viral genome to persist across bacterial generations while keeping host cells viable.Integration of the Viral GenomeUpon infection, bacteriophage lambda attaches to the bacterial surface and injects...
01:29Viruses with RNA Genomes
3
RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...
3