相关实验视频
Updated: May 15, 2026

21:24
Methylated DNA Immunoprecipitation
Published on: January 2, 2009
23.5K
多种STEM MePCR:一种无二硫酸盐,多重,高度敏感和高度特异的试验,用于测量DNA甲基化
Hao Yang1, Jiani Qiu1, Yaping Xu1
1School of Biomedical Engineering/Med-X Research Institute, Shanghai Jiao Tong University Shanghai 200030 China gaolian.xu@sicii.org.cn hcgu@sjtu.edu.cn xuhong@sjtu.edu.cn.
Chemical science
|June 23, 2025
概括
这项研究引入了一种新的,不含二硫酸盐的多重DNA甲基化分析方法,称为多STEM MePCR. 这种技术为癌症诊断和表观遗传学研究提供了更有效,更敏感和更具成本效益的方法.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
- 癌症的诊断 癌症的诊断
背景情况:
- 异常CpG岛甲基化是癌症诊断中的关键生物标志物.
- 目前用于多重甲基化分析的现有方法通常是低效和复杂的.
- 标准的PCR平台对全面的甲基化分析有局限性.
研究的目的:
- 为基因组甲基化分析开发一种创新的,无二硫酸盐的多重测定方法.
- 为了能够同时检测多个具有高灵敏度和特异性的CpG位点.
- 为现有技术提供更简单,更快,更具成本效益的替代方案.
主要方法:
- 开发了一种新的多重检测方法:多种特定终端介导甲基化PCR (多种STEM MePCR).
- 整合了依赖甲基化的限制性内核酶 (MDRE) 与多重PCR.
- 采用干环结构化测试来同时检测多个CpG位点.
主要成果:
- 实现了对三个甲基化模型位点的定量化,每管下降到十个副本.
- 在大量非甲基化DNA的背景下显示出0.1%的灵敏度.
- 展示了最小化的交叉活性和目标竞争,使得精确的甲基化丰度区分成为可能.
结论:
- 多STEM MePCR平台提供与二硫酸盐测序相比较的高临床精度.
- 这项技术为多重甲基化分析提供了更简单,更快,更低成本的解决方案.
- 开创了一个先进的战略,对于表观遗传研究和临床DNA甲基化诊断至关重要.
更多相关视频
相关概念视频
PCR
Overview
DNA Isolation
DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
DNA Microarrays
Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
PCR - Polymerase Chain Reaction
Overview
Capillary Electrophoresis: Applications
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
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...

