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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
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TEQUILA-seq:一种多功能且低成本的方法,用于针对性的长读RNA测序.

Feng Wang1, Yang Xu1,2, Robert Wang1,2

  • 1Center for Computational and Genomic Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA.

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|August 8, 2023
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概括

TEQUILA-seq增强了针对性的长读RNA测序,以更深入地覆盖转录. 这种具有成本效益的方法揭示了癌症中瘤抑制基因失活的新型异型和RNA相关机制.

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科学领域:

  • 基因组学和转录基因组学
  • 分子生物学分子生物学
  • 癌症研究 癌症研究

背景情况:

  • 长读RNA测序 (RNA-seq) 提供了全面的转录组分析,但在吞吐量和转录覆盖率方面存在局限性.
  • 有针对性的RNA-seq策略对于克服吞吐量瓶和专注于特定基因组组至关重要.
  • 目前针对针对性的长读RNA-seq的方法可能是昂贵和复杂的实施.

研究的目的:

  • 推出TEQUILA-seq,一种新的,具有成本效益和用户友好的方法,用于针对性的长读RNA测序.
  • 评估TEQUILA-seq丰富转录覆盖率并保留针对性基因组的量化能力.
  • 研究乳腺癌细胞系中可操作癌症基因的全长转录异型,并确定新型异型和调控机制.

主要方法:

  • 开发TEQUILA-seq,一种使用异热线性放大捕获探头的向长读RNA-seq方法.
  • 在牛津纳米孔平台上TEQUILA-seq的应用与各种基因面板大小.
  • 在40个乳腺癌细胞系中,对468个可操作的癌症基因的全长转录异型的概况.

主要成果:

  • TEQUILA-seq持续且实质性地丰富了转录覆盖范围,同时在不同的基因组中保持了准确的量化.
  • 鉴定特定于乳腺癌亚型的转录异型,并在TP53.3等基因中发现新的异型.
  • 在瘤抑制基因中通过无意中介衰变降解的异常转录异型的显著丰富,表明一种常见的失活机制.

结论:

  • TEQUILA-seq提供了一种多功能,低成本和高效的解决方案,用于针对性的长读RNA测序,与商业替代品相比,大大降低了成本.
  • 该方法可以对全长的转录异型进行深入分析,促进发现癌症中的新异型和调节机制.
  • 在生物医学研究中,TEQUILA-seq具有广泛的适用性,用于针对性测序全长转录.