Lateral Flow Platform for Lung Cancer Diagnosis through Simultaneous Detection of ctDNA and MicroRNA

作者：Yingbo Pan, Dawei Wang, Ruyue Wei, Shuqi Wang, Yufan Li, Wei Pan, Ping Zhou, Na Li, Bo Tang · 发表于：Analytical Chemistry · 年份：2025 · DOI：10.1021/acs.analchem.4c05502 · 被引用次数：16 · 研究领域：Advanced biosensing and bioanalysis techniques、Environmental DNA in Biodiversity Studies、Cancer Genomics and Diagnostics

Early cancer screening is essential for reducing cancer-related mortality and improving survival rates. Simultaneous detection of multiple tumor markers can enhance the accuracy and specificity of cancer diagnosis, helping us to mitigate false-positive results associated with single-marker analysis. Here, we have developed a lateral flow detection platform that combines recombinase polymerase amplification (RPA), CRISPR Cas9, and catalyzed hairpin assembly (CHA) for the simultaneous detection of KRAS ctDNA and miRNA-223 in lung cancer. The CRISPR Cas9 system acts as a linking element, enabling specific recognition and binding to RPA amplicons of KRAS ctDNA while facilitating the capture of Au-DNA-Bio nanoparticles (NPs), thereby producing a stronger detection signal through Au NPs aggregation. The CHA system enhances this platform by providing sensitive detection of miRNA-223. Our platform was tested on a limited number of clinical saliva samples, demonstrating feasibility but requiring further validation with larger cohorts.