与祖先相关的氧结合蛋白类10个遗传多态对登革热病毒复制和抗登革热免疫反应的可能影响
Hector Granela1, Ana B Perez1, Luis Morier2
1Virology Department, "Pedro Kourí" Tropical Medicine Institute (IPK). Autopista Novia del Mediodía, km 61/2.Havana, Cuba.
Heliyon
|October 24, 2024
概括
在OSBPL10基因影响登革热病毒的复制和免疫反应. 非洲的OSBPL10单元型减少病毒载量和增强免疫标记,这可能解释了这个群体中较低的严重登革热病例.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 遗传学 遗传学 是一个
背景情况:
- 氧化结合蛋白类10 (OSBPL10) 基因与非洲裔个体严重登革热易感性降低有关.
- 了解OSBPL10在登革热病毒 (DENV) 复制和免疫反应中的作用对于解释疾病严重程度的种族差异至关重要.
研究的目的:
- 为了研究OSBPL10对DENV复制在体外的作用.
- 分析非洲和欧洲OSBPL10类别对DENV复制和先天免疫反应的影响.
主要方法:
- 在细胞系 (THP-1,Huh-7D12) 中对OSBPL10的基因敲除,随后进行DENV-2复制试验.
- 从具有特定OSBPL10单元型的个体培养周围血液单核细胞 (PBMC),并与DENV-2进行挑战.
- 通过qRT-PCR和斑块检测评估病毒载量,并使用RT-PCR测量基因表达 (RXR-α,IFN-γ,IL-10,IL-8).
主要成果:
- 在实验室中,OSBPL10 Knockdown显著减少了DENV-2的复制.
- 欧洲的OSBPL10单种类型与较高的DENV标位和增加的RXR-α和IL-8mRNA表达相关.
- 非洲的OSBPL10单元型与较低的病毒载荷和增强的IFN-γ和IL-10表达有关.
结论:
- OSBPL10在调节DENV复制和先天性免疫反应方面发挥作用.
- 欧洲单元类型可以通过抑制I型干扰素反应来促进DENV复制.
- 非洲类型似乎通过增强的抗病毒反应来保护严重的登革热,这与在某些种族群体中观察到的较低的疾病频率保持一致.
相关概念视频
01:05Single 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
02:32Exon Recombination
3.6K
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon...
Exon shuffling follows “splice frame rules.” Each exon...
3.6K
01:33Pleiotropy
40.0K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.0K