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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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Next-generation Sequencing03:00

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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
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相关实验视频

Updated: Jun 27, 2025

Validating Whole Genome Nanopore Sequencing, using Usutu Virus as an Example
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U-CAN-seq:通过纳米孔测序进行通用竞争测定.

Jennifer Diaz1, John Sears1, Che-Kang Chang1

  • 1Department of Microbiology and Immunology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27514, USA.

Viruses
|April 27, 2024
PubMed
概括

通过纳米孔测序 (U-CAN-seq) 进行的全新的通用竞争测试可以快速且廉价地测量RNA病毒的适应性. 这种方法揭示了病毒突变如何影响健康,有助于理解病毒演变和人类健康风险.

关键词:
病毒RNARNA病毒RNA病毒艾尔法病毒 (alphavirus) 是一种竞争分析 竞争分析 竞争分析纳米孔测序的测序病毒健身 病毒健身 病毒健身

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相关实验视频

Last Updated: Jun 27, 2025

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科学领域:

  • 病毒学 病毒学
  • 进化生物学 进化生物学
  • 分子生物学分子生物学

背景情况:

  • RNA病毒迅速进化,影响病毒健康和宿主范围,对人类健康构成风险.
  • 评估新型病毒变异的进化适应性对于了解流行病潜力至关重要.
  • 传统的竞争试验面临的挑战是如何快速且负担得起地量化类似病毒基因型之间的健康差异.

研究的目的:

  • 开发一种具有成本效益和敏感的方法来评估RNA病毒的进化适应性.
  • 为了快速量化密切相关的病毒基因型之间的健康差异.
  • 为了研究特定突变对 chikungunya 病毒 (CHIKV) 适应性的影响.

主要方法:

  • 通过纳米孔测序 (U-CAN-seq) 开发通用竞争测试.
  • 使用逆转录PCR和纳米孔测序来对未标记的RNA病毒进行竞争测试.
  • 应用U-CAN-seq来研究已知的CHIKV突变 (N24A) 和5'保存序列元素和干环3 (SL3) 中的突变.

主要成果:

  • U-CAN-seq成功检测出与CHIKV.中N24A突变相关的竞争劣势.
  • 突变破坏了CHIKV 5'保存序列元素的序列,但并没有破坏其结构,并没有改变病毒适应性.
  • 与野生型CHIKV相比,邻近的CHIKV干循环3 (SL3) 中的突变导致了显著的适应性劣势.

结论:

  • U-CAN-seq是一种敏感,经济有效,快速的方法来评估RNA病毒的进化适应性.
  • 在CHIKV SL3区域内的主要序列决定因素在病毒适应性中发挥着关键作用.
  • 该U-CAN-seq试验为RNA病毒进化和生物学提供了宝贵的见解.