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一个具有化学加热和紧光学检测的低功率LAMP装置用于点照料测试

Yifan Liao¹, Shoji Yamamoto², Kazuhiro Morioka³

¹Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo 7 Metropolitan University, 1-1 Minami-osawa, Hachioji, 8, Tokyo, 192-0397, Japan; Graduate School of Chemical Sciences and Engineering, Hokkaido University, Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan.

|August 21, 2025

概括

通过循环介导的同热放大 (LAMP),便携式的无电装置可以快速检测核酸. 这种化学加热系统在资源有限的环境中提供敏感和特定的诊断结果.

科学领域:

生物技术
分析化学
医疗诊断

背景情况:

核酸放大对于诊断至关重要,但通常需要专门的设备.
资源有限的环境面临着依赖电力的诊断工具的挑战.
像LAMP这样的同热放大方法为简化核酸检测提供了潜力.

研究的目的:

开发一个便携式的,无电的循环介导同热放大器 (LAMP) 和反向转录LAMP (RT-LAMP).
在资源有限的环境中实现快速和灵敏的核酸检测.
评估开发系统的分析性能和诊断潜力.

主要方法:

一个化学加热模块,利用氧化和水产生外热热量.
一种以棕酸为基础的相变材料,以保持稳定的温度 (60°C-65°C).
使用SYTO-9染料,蓝色LED和光电极管进行实时光监测.

主要成果:

与商业阅读器相比,该设备表现出极好的线性 (R2 = 0.989-0.993) 和较低的检测极限 (LOD = 0.010-0.026 μM).
在RT-LAMP试验中,SARS-CoV-2 RNA的LOD达到1.025个副本/反应.
确认高特异性,没有唾液或非目标RNA的错误阳性.

结论:

开发的便携式无电设备为核酸放大提供了灵敏和特定的平台.
它非常适合在紧急响应和离网位置进行点诊断.
该系统为可访问的分子诊断提供了一个有前途的解决方案.

关键词:

化学加热光检测循环介导的同热放大变相材料在护理场所进行测试便携式设备

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