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用Cas13进行大规模多重化核酸检测

Cheri M Ackerman1,2, Cameron Myhrvold3,4, Sri Gowtham Thakku1,5

  • 1Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA, USA.

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一个新的平台,用于核酸多重评估的组合阵列反应 (CARMEN),可以使用CRISPR技术进行可扩展的多重病原体检测. 这一进步改善了疾病监测和诊断, 允许在众多样本中同时对数千个目标进行测试.

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科学领域:

  • 分子生物学
  • 生物技术
  • 传染病监测

背景情况:

  • 目前的病原体检测方法难以扩展和多重化,限制了它们在常规监测和疫情应对方面的有效性.
  • 需要先进的诊断技术,能够同时检测多种病原体的样本.

研究的目的:

  • 开发一个可扩展和高度多重化的核酸检测平台.
  • 增强全球卫生安全的病原体监测和诊断能力.

主要方法:

  • 组合阵列反应多重评估核酸 (CARMEN) 平台的开发.
  • 将CARMEN与CRISPR-Cas13检测进行高通量核酸分析.
  • 在微波阵列中使用纳米升液滴进行样本-试剂配对和复制测试.

主要成果:

  • 卡门-卡斯13平台可在单一阵列上对超过4500个CRISPRRNA目标对进行可靠的测试.
  • 成功开发了一种能够分辨所有169种与人类相关的病毒并检测SARS-CoV-2的多重测定方法.
  • 证明了A型流感菌株的综合亚型化和艾滋病毒耐药性突变的鉴定.
  • 通过微型化和可扩展性,每次试验的试剂成本降低了300倍以上.

结论:

  • CARMEN-Cas13提供了一个可扩展,高成本的核酸检测解决方案.
  • 这项技术显著提高了临床诊断和大规模公共卫生监测的能力.
  • 该平台有助于转向大样本集的综合测试,改善患者护理和疫情准备.