基于CRISPR/Cas13a的RNA的化生物传感器,用于对结直肠组织中的RNA进行无标签的量化
Yu-Chen Xu1, Wen-Jing Liu1, Chen-Chen Li2
1School of Chemistry and Chemical Engineering, State Key Laboratory of Digital Medical Engineering, Southeast University, Nanjing 211189, China.
Analytical chemistry
|February 5, 2026
概括
一种新的RNA生物传感器检测到BRD2RNA,这是早期结直肠癌 (CRC) 诊断的潜在生物标志物. 这种基于CRISPR/Cas13a的工具在患者组织中提供了灵敏的,无标签的检测,为改进诊断铺平了道路.
科学领域:
- 生物分子工程 生物分子工程
- 分子诊断学 分子诊断学
- 癌症研究 癌症研究
背景情况:
- 结肠直肠癌 (CRC) 是一个重大的全球健康挑战,早期诊断仍然很困难.
- 确定可靠的非侵入性生物标志物对于有效的CRC检测和管理至关重要.
研究的目的:
- 开发一种灵敏和特定的基于RNA的生物传感器,用于检测BRD2RNA作为结直肠癌的生物标志物.
- 建立一种使用CRISPR/Cas13a技术在结直肠组织中检测BRD2RNA的无标签检测方法.
主要方法:
- 基于CRISPR/Cas13a的RNA化生物传感器用于BRD2RNA检测.
- 利用Cas13a的跨裂变活性和转录放大用于信号生成.
- 采用Pepper RNA的吸收体和光体 (HBC620) 来进行敏感的信号读取.
主要成果:
- 生物传感器实现了高灵敏度的BRD2RNA检测,可达到0.39 fM.
- 证明了在单细胞水平上精确量化BRD2RNA表达.
- 生物传感器成功地区分了结直肠癌患者的组织和相邻的正常组织.
结论:
- BRD2 RNA 是结直肠癌的一个有前途的非侵入性生物标志物.
- 开发的基于CRISPR/Cas13a的化生物传感器为早期癌症诊断提供了一个灵敏和适应性的平台.
- 生物传感器的可编程性允许潜在的适应来检测其他RNA目标,包括非编码和病毒RNA.
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