库尔德人群中的共同TLR4SNP的基因型频率:全球评估和非洲以外的迁移
Sherko Subhan Niranji1,2,3, Sirwan M A Al-Jaf4,2,3
1Department of Biology, College of Education, University of Garmian, Kalar, Kurdistan Region, Iraq, Sherko.subhan@garmian.edu.krd.
Human biology
|September 21, 2023
概括
在库尔德人和全球人口中研究托尔类受体4 (TLR4) 单核酸多态 (SNPs) 揭示了人类迁移模式和疾病关联的洞察力. 在世界各地的不同种族群体中,TLR4 SNPs的频率有很大差异.
科学领域:
- 免疫学 免疫学 免疫学
- 人类遗传学 人类遗传学
- 人口遗传学 人口遗传学
背景情况:
- 收费类受体 (TLRs) 对于天生的免疫是至关重要的,通过TLR4.4识别细菌脂多糖类等微生物分子.
- 在TLR4中,单核酸多态 (SNP) 与诸如败血症休克等疾病有关,这突显了它们在免疫反应和病原发生中的重要性.
- 了解TLR4 SNP变异可以阐明疾病机制和对感染的先天免疫反应.
研究的目的:
- 在库尔德人群中调查两种常见的TLR4SNP (Asp299Gly和Thr399Ile) 的基因型频率.
- 分析各种人群中这些TLR4SNP的全球频率,以推断人类迁移和定居历史.
- 探索TLR4 SNP同分离和疾病易感性之间的潜在关联.
主要方法:
- 限制片段长度多态 (RFLPs) 用于确定库尔德人群中TLR4SNP的基因型频率.
- 来自不同人口 (撒哈拉以南非洲,北非,西亚,欧亚,东亚) 的全球SNP频率数据被编译和分析.
- 对SNP频率进行了比较分析,以确定与人类迁移和混合相关的模式.
主要成果:
- 库尔德人口的TLR4 SNP频率与西亚和欧亚人口的频率相似,这表明历史上的混合和迁移.
- 同卵性野生型TLR4变种在全球普遍存在,而同卵性突变种在大多数人群中很少或不存在.
- 对于TLR4SNP的异构体频率有很大差异,在撒哈拉以南非洲,阿拉伯半岛和东亚观察到不同的模式.
- 在某些人群中观察到TLR4SNP的同分离,暗示了潜在的疾病关联.
结论:
- TLR4 SNPs的分布提供了过去人类迁移,混合和共同祖先的证据.
- 全球TLR4 SNP频率的变化强调了它们在多样化的人口遗传学和免疫反应中的作用.
- 需要进一步的研究来确定特定的TLR4SNP与疾病耐药性或易感性之间的直接联系.
相关概念视频
Single Nucleotide Polymorphisms-SNPs
15.2K
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,...
15.2K
Comparing Copy Number Variations and SNPs
17.7K
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%...
17.7K
Genome-wide Association Studies-GWAS
13.6K
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...
13.6K
Incomplete Dominance
22.7K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
22.7K
Non-LTR Retrotransposons
11.6K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
11.6K


