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相关概念视频

RNA-seq03:21

RNA-seq

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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. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
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相关实验视频

Updated: Jun 21, 2025

Sequencing of mRNA from Whole Blood using Nanopore Sequencing
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使用纳米孔直接RNA测序对细菌转录组和表转录组进行分析.

Lu Tan1, Zhihao Guo1, Yanwen Shao1

  • 1Department of Infectious Diseases and Public Health, Jockey Club College of Veterinary Medicine and Life Sciences, City University of Hong Kong, Hong Kong, China.

Nucleic acids research
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概括

纳米孔直接RNA测序 (DRS) 有效地分析细菌RNA,增强mRNA产量,并实现转录组范围内的RNA修饰映射,以改善细菌基因表达研究.

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科学领域:

  • 分子生物学分子生物学
  • 基因组学就是基因组学.
  • 生物信息学是一种生物信息学.

背景情况:

  • 细菌的基因表达依赖于复杂的调节网络.
  • 纳米孔直接RNA测序 (DRS) 提供了快速的细菌RNA分析,但在mRNA读取产量和RNA修饰检测方面面临挑战.
  • 现有的方法需要优化,以便全面地描述细菌转录组和表转录组的特征.

研究的目的:

  • 为了增强纳米孔直接RNA测序 (DRS) 用于细菌RNA分析.
  • 改进mRNA读取产量,并使转录组范围内的RNA修饰映射成为可能.
  • 重建复杂的转录组架构,并确定细菌中的RNA修饰.

主要方法:

  • 细菌总RNA经过预处理:大小选择,核糖体RNA枯竭和多基化.
  • 纳米孔DRS是在从大肠杆菌和金黄色葡萄球菌的加工RNA上进行的.
  • 基于纳米孔的计算工具和下一代测序方法用于转录组和表转录组分析.

主要成果:

  • 预处理显著增加了测序数据吞吐量和mRNA读数.
  • 重建了复杂的转录组架构,扩展了E. coli和S. aureus的已知操作子边界.
  • 检测到假定的RNA修饰部位,在大肠杆菌中确定了75个高可信度N6-甲基氨酸 (m6A) 候选物.

结论:

  • 优化的纳米孔DRS协议增强细菌mRNA产量,并使全面的转录组分析.
  • 这项研究证明了纳米孔DRS在细菌中的全球RNA修饰映射方面的潜力.
  • 这种方法为细菌表表表转录组研究提供了一个系统且方便的平台.