相关实验视频

Updated: Jul 8, 2025

Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER

Detection of Rare Genomic Variants from Pooled Sequencing Using SPLINTER

Published on: June 23, 2012

基于重叠的片段来选SARS-CoV-2变种的桑格方法

Sonia Etenna Lekana-Douki¹, Joa Braithe Mangombi Pambou¹, Nadine N'dilimabaka^1,2

¹Centre Interdisciplinaire de Recherches Médicales de Franceville (CIRMF), BP, 769, Franceville, Gabon.

|December 11, 2023

概括

这项研究开发了一种具有成本效益的RT-PCR试验,用于检测加的SARS-CoV-2变种,包括Alpha,Delta和Omicron. 该方法有助于资源有限的实验室跟踪病毒演变和公共卫生.

科学领域:

病毒学病毒学
基因组学就是基因组学.
分子生物学分子生物学

背景情况:

由于基因突变,COVID-19流行病的特点是出现SARS-CoV-2变种.
世界卫生组织 (WHO) 根据可传播性和致病性变化定义了令人担忧的变种 (VOC) 和感兴趣的变种 (VOI).
尖基因的突变对于这些变异特征至关重要.

研究的目的:

开发和验证一种具有成本效益的逆转录酶聚合酶链反应 (RT-PCR) 试验,用于识别SARS-CoV-2突变和变异.
分析在疫情初期加的SARS-CoV-2血统和特定变异的流通情况.
为那些资金有限或没有下一代测序 (NGS) 能力的实验室提供一种可访问的方法.

主要方法:

设计了十个重叠的RT-PCR试验,针对SARS-CoV-2尖端基因.
使用桑格方法对突变碎片的测序.
基因组分析和测序碎片的组装,以识别突变和变异.
通过与下一代测序 (NGS) 方法进行比较,验证开发的RT-PCR方法.

主要成果:

开发的RT-PCR测定成功识别了SARS-CoV-2尖端基因内的突变.
该研究确定了在疫情开始时加的SARS-CoV-2系A和B的流通情况.
使用这种方法识别了阿尔法,三角洲和Omicron变种.
突出了SARS-CoV-2B血统B的一个特征突变.

结论:

开发的RT-PCR试验有效识别SARS-CoV-2变种,包括VOC和VOI,特别是在资源有限的环境中.
这种方法使得没有NGS仪器的实验室能够测序S基因并跟踪病毒循环.
该研究表明,加有多种SARS-CoV-2变种的传播,有助于区域流行病学监测.

关键词:

覆盖在一起的碎片.这就是SARS-CoV-2病毒.桑格尔的方法桑格尔的方法变种变种变种变种

更多相关视频

Quantification and Whole Genome Characterization of SARS-CoV-2 RNA in Wastewater and Air Samples

Quantification and Whole Genome Characterization of SARS-CoV-2 RNA in Wastewater and Air Samples

Published on: June 30, 2023

Author Spotlight: A Cost-Effective Genomic Workflow for Advancing Rabies Control in Resource-Limited Settings

Author Spotlight: A Cost-Effective Genomic Workflow for Advancing Rabies Control in Resource-Limited Settings

Published on: August 18, 2023

相关概念视频

Sanger Sequencing

Sanger Sequencing

DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...

Next-generation Sequencing

Next-generation Sequencing

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....

RNA-seq

RNA-seq

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...