在CRISPR-Cas9指导的无放大基因组诊断家族性高胆固醇血症使用纳米孔测序
Sijia Xu1, Hiroki Shiomi1, Yugo Yamashita1
1Department of Cardiovascular Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
PloS one
|March 20, 2024
概括
这项研究引入了一种新的无放大基因测试方法,用于家族高胆固醇血症,结合CRISPR-Cas9和纳米孔序列. 这种方法可以准确地检测到像LDLR和PCSK9这样的关键基因中的小型和大型突变,从而提高诊断能力.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
背景情况:
- 家族性高胆固醇血症 (FH) 是一种被诊断不足的遗传性疾病.
- 传统的遗传检测方法 (如NGS,PCR) 依赖于放大,限制了大突变的检测.
- 目前的方法在FH中复杂的遗传变异的有效性和准确性方面扎.
研究的目的:
- 开发和验证FH相关基因的无放大测序方法.
- 改进检测LDLR和PCSK9.9中小型和大型遗传变异的检测.
- 克服基于PCR的传统基因测试的局限性.
主要方法:
- 结合CRISPR-Cas9基因编辑与长读纳米孔测序.
- 设计和优化了针对LDLR和PCSK9基因的CRISPR-RNA面板.
- 在没有先前DNA放大的情况下对人类基因组DNA进行了测序.
主要成果:
- 实现了LDLR (106×) 和PCSK9 (420×) 的高平均覆盖率,具有显著的长读比例.
- 在LDLR的编码和拼接区域成功识别了致病突变.
- 检测到大量的11,029bp删除,并证明了PCR诱导的虚假阳性删除的消除.
结论:
- 开发的CRISPR-Cas9和纳米孔测序方法使得在FH中无需放大,可以检测出基因变异.
- 这种方法可以准确地识别LDLR和PCSK9.9中的小型和大型突变,包括大型缺失.
- 该技术为家族性高胆固醇血症提供了更全面,更准确的诊断工具,克服了当前方法的局限性.
更多相关视频
05:58Digital Polymerase Chain Reaction Assay for the Genetic Variation in a Sporadic Familial Adenomatous Polyposis Patient Using the Chip-in-a-tube Format
Published on: August 20, 2018
10.9K
08:22A Robust Polymerase Chain Reaction-based Assay for Quantifying Cytosine-guanine-guanine Trinucleotide Repeats in Fragile X Mental Retardation-1 Gene
Published on: September 16, 2019
7.9K
相关概念视频
Pharmacogenomics: Identification of New Drug Targets
Advances in genomics have profoundly influenced drug discovery by increasing both the speed and accuracy of pharmaceutical development. Pharmacogenomics, which examines how genetic variation influences drug response, facilitates the identification of novel therapeutic targets and enables patient stratification for personalized treatment. These strategies contribute to improved drug efficacy, minimized adverse effects, and more efficient clinical trial design.Mapping genetic differences...
CRISPR/Cas9 Genome Editing
The CRISPR-Cas system serves as a bacterial defense mechanism against invading genetic elements such as viruses and plasmids, forming the foundation for its adaptation as a powerful genome-editing tool. Originally discovered in prokaryotes, this system has been repurposed to revolutionize genetic engineering across a wide range of organisms, including plants, animals, and humans. The core component, Cas9, is an endonuclease derived from Streptococcus pyogenes, capable of introducing...
