相关实验视频

Updated: Jan 14, 2026

Measuring Single-Cell Mitochondrial DNA Copy Number and Heteroplasmy Using Digital Droplet Polymerase Chain Reaction

Measuring Single-Cell Mitochondrial DNA Copy Number and Heteroplasmy Using Digital Droplet Polymerase Chain Reaction

Published on: July 12, 2022

数字滴滴PCR是一种准确和精确的方法来测量DNA复制号码

Shaobo Zhang^1,2, Evan A Rajadhyaksha^1,2, Farooq Syed³

¹Division of Pediatric Nephrology, Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA.

Scientific reports

|October 22, 2025

概括

数字滴滴PCR (ddPCR) 提供了精确的DNA复制数确定,优于定量PCR (qPCR) 和匹配黄金标准方法. 这一进步有助于在临床环境中进行复制数变异 (CNV) 测试.

科学领域:

遗传学遗传学是一个
分子生物学分子生物学
生物技术是生物技术.

背景情况:

精确的DNA拷贝数确定对于遗传研究和诊断至关重要.
现有的复制数变化 (CNV) 分析方法在精度和吞吐量方面存在局限性.
人类α防御素1-3 (DEFA1A3) 基因,其复制数通常为2-12,作为评估CNV方法的复杂模型.

研究的目的:

开发和验证数字滴滴PCR (ddPCR) 协议,以精确量化DNA拷贝数量.
将ddPCR的准确性和一致性与已知的方法比较,例如脉冲场凝电泳 (PFGE) 和定量PCR (qPCR).
评估 ddPCR 适用于临床 CNV 测试的适用性.

主要方法:

开发一个针对DEFA1A3位点的ddPCR协议.
使用ddPCR对40个临床DNA样本进行分析.
将ddPCR结果与PFGE (黄金标准) 和Taqman实时qPCR获得的结果进行比较.

主要成果:

ddPCR在40个样本的DNA复制量测量中显示出与PFGE的高度一致性.
qPCR只显示了与PFGE复制数结果的弱相关性.
ddPCR在低和高范围内准确地分辨出副本数.

结论:

ddPCR是一种精确,准确和具有成本效益的DNA拷贝数量化方法.
与CNV分析中的qPCR相比,ddPCR提供了更高的性能.
开发的ddPCR协议适合在临床实践中进行适应,以进行可靠的CNV测试.

关键词:

在CNV中,CNV是NV.复制打字是为了打字.DdPCRR 是一个很好的方法.遗传学遗传学是一种遗传学.现在的PFGE就是PFGE.qPCRR 是一个很好的方法.

更多相关视频

Single Droplet Digital Polymerase Chain Reaction for Comprehensive and Simultaneous Detection of Mutations in Hotspot Regions

Single Droplet Digital Polymerase Chain Reaction for Comprehensive and Simultaneous Detection of Mutations in Hotspot Regions

Published on: September 25, 2018

Circulating MicroRNA Quantification Using DNA-binding Dye Chemistry and Droplet Digital PCR

Circulating MicroRNA Quantification Using DNA-binding Dye Chemistry and Droplet Digital PCR

Published on: June 26, 2016

相关概念视频

Real Time RT-PCR

Real Time RT-PCR

Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...

PCR

PCR

DNA Isolation

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...