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相关概念视频

CRISPR and crRNAs02:53

CRISPR and crRNAs

18.7K
Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
18.7K
The Antiviral System of Bacteria and Archaea: CRISPR01:23

The Antiviral System of Bacteria and Archaea: CRISPR

606
CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats is a adaptive immune system found in bacteria and archaea that protects against viral infections. This system enables prokaryotic cells to identify, remember, and neutralize foreign genetic elements, primarily bacteriophages, by storing fragments of the invader’s DNA as a genetic memory.The CRISPR immune response begins during an initial infection. Cas (CRISPR-associated) proteins play a central role in this...
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CRISPR01:59

CRISPR

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Genome editing technologies allow scientists to modify an organism’s DNA via the addition, removal, or rearrangement of genetic material at specific genomic locations. These types of techniques could potentially be used to cure genetic disorders such as hemophilia and sickle cell anemia. One popular and widely used DNA-editing research tool that could lead to safe and effective cures for genetic disorders is the CRISPR-Cas9 system. CRISPR-Cas9 stands for Clustered Regularly Interspaced...
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CRISPR/Cas9 Genome Editing01:28

CRISPR/Cas9 Genome Editing

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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...
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Field-Deployable Candidatus Liberibacter asiaticus Detection Using Recombinase Polymerase Amplification Combined with CRISPR-Cas12a
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基于CRISPR/Cas13a系统的高灵敏防炭检测技术

Jiao Fan1,2, Luyao Huang1,2, Jiahui Chen1,2

  • 1Chinese PLA Center for Disease Control and Prevention, Beijing, China.

Microbial biotechnology
|November 7, 2025
PubMed
概括

我们开发了一种快速,高度灵敏的CRISPR/Cas13a测定方法,用于在现场检测Bacillus anthracis. 这种便携式照顾点技术在30分钟内提供准确的结果,这对于传染病监测至关重要.

关键词:
百日 (Bacillus anthracis) 是一种植物.克里斯普尔/卡斯13a是一个.核酸检测核酸检测检测临床医疗中心的检测.

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科学领域:

  • 微生物学 微生物学
  • 分子生物学分子生物学
  • 生物技术是生物技术.

背景情况:

  • 炭杆菌 (Bacillus anthracis) 是一个重要的生物恐怖主义威胁.
  • 快速和灵敏的检测方法对于及时响应至关重要.
  • 现有的检测方法在现场应用中可能缺乏可移植性或速度.

研究的目的:

  • 开发一种高度敏感和特定的Bacillus anthracis在现场检测技术.
  • 为了将多种酶同热速放大 (MIRA) 与CRISPR/Cas13a集成.
  • 为了建立一个便携式的B. anthracis. 护理点检测 (POCT) 设备.

主要方法:

  • 整合MIRA与一个CRISPR/Cas13a检测系统.
  • 优化crRNA选择,MIRA原料和反应条件.
  • 开发一种基于CRISPR的临床试验设备,使用冷化试剂.

主要成果:

  • 优化的CRISPR/Cas13a试验实现了B. anthracis.的检测极限为1000个副本/毫升.
  • 开发的POCT设备在30分钟内显示出250副本/毫升的检测极限.
  • 该试验对常见的呼吸道病原体具有很高的特异性,并在模拟的临床样本中具有很高的准确性.

结论:

  • 成功建立了一个基于CRISPR/Cas13a的高度敏感和便携式技术,用于现场检测B. anthracis.
  • 开发的POCT设备提供了快速,准确和特定的检测能力.
  • 这项技术在监测新出现的传染病方面具有重大潜力.