相关实验视频

Updated: Sep 10, 2025

Nanopore DNA Sequencing for Metagenomic Soil Analysis

Nanopore DNA Sequencing for Metagenomic Soil Analysis

Published on: December 14, 2017

使用纳米孔测序的法医调查中单胞胎双胞胎的表观遗传差异化

Kuo Zeng¹, Kai-Bo Yang², Jiang Du³

¹School of Forensic Medicine, China Medical University, Shenyang 110000, PR China; Key Laboratory of Forensic Bio-evidence Sciences, Shenyang, Liaoning Province 110000, PR China; China Medical University Center of Forensic Investigation, Shenyang 110000, PR China.

Forensic science international. Genetics

|August 23, 2025

概括

现在可以通过牛津纳米孔测序分析的DNA甲基化模式来区分同卵双胞胎. 这种表观遗传方法可以在具有挑战性的病例中确定独特的生物标志物.

科学领域:

法医遗传学
表观遗传学
基因组学

背景情况:

单胞胎双胞胎 (MZT) 具有相同的核DNA,因此传统的法医识别标记是无效的.
现有的方法缺乏区分MZT的解决方案,在法律和识别上提出了挑战.
表观遗传标记,如DNA甲基化,提供由于环境影响的差异化潜力.

研究的目的:

确定强大的表观遗传生物标志物用于单胞胎双胞胎的司法歧视.
在法医中评估牛津纳米孔测序对全基因组DNA甲基化分析的有用性.
建立稳定的,可遗传的生物标志物,用于在降解或痕迹样本中区分MZT.

主要方法:

使用牛津纳米孔测序对六个单胞胎双胞胎的全基因组DNA甲基化概况.
鉴定表观遗传变异的差异甲基化位点 (DML).
对排序数据进行分析,以确定对齐效率,读数长度和无PCR工作流程.

主要成果:

在代谢和神经通路中丰富的3820个共享的甲基化位点 (DMLs) 的鉴定.
牛津纳米孔测序显示了高对齐效率 (> 99.5%) 和长读长 (> 13kb N50).
该方法使得快速,无PCR分析适用于法医应用.

结论:

基于纳米孔的甲基化分析通过捕捉表观遗传差异有效地区分单胞胎双胞胎.
已识别的DML可以作为法医歧视的可操作生物标志物,促进人类的识别.
这种方法为刑事案件处理,灾难受害者识别和父权测试提供了变革性的工具.

关键词:

DNA 甲基化表观遗传标记物法医遗传学单胞胎双胞胎纳米孔测序

更多相关视频

Enhanced Genetic Analysis of Single Human Bioparticles Recovered by Simplified Micromanipulation from Forensic ‘Touch DNA’ Evidence

Enhanced Genetic Analysis of Single Human Bioparticles Recovered by Simplified Micromanipulation from Forensic ‘Touch DNA’ Evidence

Published on: March 9, 2015

Sequencing of mRNA from Whole Blood using Nanopore Sequencing

Sequencing of mRNA from Whole Blood using Nanopore Sequencing

Published on: June 3, 2019

相关概念视频

Comparing Copy Number Variations and SNPs

Comparing Copy Number Variations and SNPs

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%...

Modern Molecular Taxonomy

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...