全基因组发现多发性硬化症遗传风险变异的等位基因调节活性
Marissa Granitto1,2,3, Lois Parks1,3,4, Molly S Shook1,3
1Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229, USA.
G3 (Bethesda, Md.)
|August 21, 2025
概括
这项研究确定了控制多发性硬化症 (MS) 风险位的基因变异. 这些发现揭示了导致这种复杂神经疾病的基因调节机制.
科学领域:
- 神经免疫学
- 遗传学
- 分子生物学
背景情况:
- 多发性硬化 (MS) 是一种免疫媒介的中枢神经系统 (CNS) 脱髓化疾病.
- 遗传因素有助于MS病因,许多风险变异位于非编码区域.
- 了解遗传变异如何影响基因表达对于阐明多发性硬化症的发病性至关重要.
研究的目的:
- 在多发性硬化风险位点内识别基因风险变异与基因型依赖的调节活性.
- 研究这些变异在改变MS相关的基因表达中的作用.
- 为了解MS背后的遗传机制提供资源.
主要方法:
- 使用大规模并行报告测试 (MPRA) 来测试14275种多发性硬化症遗传风险变异.
- 将MPRA库应用于MS患者的EBV转化B细胞系和GM12878细胞系.
- 分析了变体的基因型依赖增强和沉默活动.
主要成果:
- 发现了150种基增强变体和286种基抑制变体.
- 这些变体代表了83个独立的MS风险位置.
- 对已知多发性硬化风险位的三分之一以上确定了潜在的因果基因依赖基因调节机制.
结论:
- 这项研究涉及特定的基因变异在MS风险位内的基因表达调节.
- 这些发现为MS病变的遗传基础提供了洞察力.
- 在未来对多发性硬化遗传机制的研究中提供了宝贵的资源.
更多相关视频
11:35Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay EMSA and DNA-affinity Precipitation Assay DAPA
Published on: August 21, 2016
13.1K
10:17An Allele-specific Gene Expression Assay to Test the Functional Basis of Genetic Associations
Published on: November 3, 2010
23.0K
相关概念视频
Genome-wide Association Studies-GWAS
14.1K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
14.1K
Comparing Copy Number Variations and SNPs
17.9K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
17.9K
Single Nucleotide Polymorphisms-SNPs
15.9K
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,...
15.9K
Human Genetics
719
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
719
