在癌症分子诊断中的CRISPR-Cas12a/Cas13a
Juncheng Lin1, Yuyuan Wang1, Biyun Zeng2
1School of Medical Technology, Guangdong Medical University, Dongguan 523808, Guangdong, PR China; Department of Medical Laboratory, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524000, Guangdong, PR China.
概括
CRISPR-Cas12a和Cas13a生物传感器提供了一种敏感的,非侵入性的方法,用于使用液体活检进行早期癌症诊断. 这些先进的系统克服了传统方法的局限性,为改进癌症检测和监测铺平了道路.
科学领域:
- 分子诊断学 分子诊断学
- 生物技术是生物技术.
- 癌症研究 癌症研究
背景情况:
- 癌症诊断依赖于早期检测,但传统的活检是侵入性的和有限的.
- 液体活检为分析循环瘤生物标志物提供了一个非侵入性的替代方案.
- 目前的液体活检方法面临着诸如高成本,复杂性和低灵敏度等挑战.
研究的目的:
- 审查CRISPR-Cas12a/Cas13a生物传感器在癌症分子诊断方面的进展.
- 突出CRISPR系统在检测各种癌症生物标志物的应用.
- 分析基于CRISPR的癌症诊断的当前挑战和未来方向.
主要方法:
- 使用CRISPR-Cas12a进行DNA检测 (突变,甲基化) 和Cas13a进行RNA检测 (miRNA,病毒RNA).
- 探索用于检测非核酸生物标志物 (蛋白质,外体) 的信号转换策略.
- 总结了基于CRISPR的生物传感器技术在癌症诊断方面的最新发展.
主要成果:
- 克里斯普尔-卡斯系统在液体样本中检测癌症生物标志物的高灵敏度和特异性.
- 这些系统能够分析基因突变,表观遗传修饰,miRNA和瘤相关病毒.
- 通过创新的信号转换,CRISPR技术显示出检测非核酸生物标志物的潜力.
结论:
- 克里斯普尔-Cas12a/Cas13a生物传感器代表了非侵入性癌症诊断的一个有希望的前沿.
- 解决像PAM依赖,矩阵效应和多重化等挑战对于临床翻译至关重要.
- 未来与纳米技术,微流体学和人工智能的整合将增强诊断能力和标准化.
相关概念视频
CRISPR/Cas9 Genome Editing
2.3K
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...
2.3K
CRISPR
58.5K
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...
58.5K
CRISPR and crRNAs
19.4K
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...
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...
19.4K
Homologous Recombination
64.8K
The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
64.8K


