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相关概念视频

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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...
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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
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相关实验视频

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Targeted RNA Sequencing Assay to Characterize Gene Expression and Genomic Alterations
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斯塔拉德:选择性目标放大用于低丰度RNA检测

Daesong Jeong1,2, Chulmin Park1,2, Ilha Lee3,4

  • 1Laboratory of Plant Developmental Genetics, School of Biological Sciences, Seoul National University, Seoul, 08826, Korea.

Plant methods
|September 30, 2025
PubMed
概括

一种名为STALARD的新方法 (用于低丰度RNA检测的选择性目标放大) 增强了RNA异形量化. 这种快速技术提高了对低丰度转录的敏感性,克服了传统方法的局限性.

关键词:
异形量化的量化.低丰富度的RNA是什么反向转录-定量实时PCR进行逆转录.选择性的转录丰富

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科学领域:

  • 分子生物学分子生物学
  • 遗传学 遗传学 是一个
  • 生物信息学是一种生物信息学.

背景情况:

  • 准确的RNA异形量化对于理解基因调节至关重要.
  • 传统的RT-qPCR对低丰度转录 (Cq > 30) 缺乏敏感性.
  • 全转录组测序是昂贵而复杂的;异形特异的qPCR面临着原始效率偏差.

研究的目的:

  • 开发一种灵敏和快速的方法来量化低丰度和替代拼接RNA异型.
  • 克服传统RT-qPCR在检测和量化特定转录变异方面的局限性.

主要方法:

  • 开发了STALARD (用于低丰度RNA检测的选择性目标放大),一种两步RT-PCR方法.
  • STALARD可以选择性地放大具有已知的5'-end序列的多基化转录.
  • 使用标准实验室试剂进行快速协议 (<2小时).

主要成果:

  • 在Arabidopsis thaliana中,STALARD成功量化了包括VIN3在内的低丰度转录,包括VIN3.
  • 检测到已知的FLM,MAF2,EIN4和ATX2异型的替代拼接事件,即使常规RT-qPCR失败.
  • 通过使用纳米孔测序,实现了低丰度反感转录COOLAIR的一致量化,并揭示了使用纳米孔测序的新型多基化位点.

结论:

  • STALARD提供了一种敏感,简单和易于使用的方法,用于对已知5'-end序列的低丰度转录的异形水平量化.
  • 该方法与qPCR和长读测序兼容,增强了其多功能性.
  • STALARD有助于分析转录变异和发现新的3'-end结构.