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• W3175658908 endingPage "338800" @default.
• W3175658908 startingPage "338800" @default.
• W3175658908 abstract "Accurate quantification of multiple miRNAs biomarkers in body fluid is still a challenge for early screening of cancer. Herein, by catalytic hairpin assembly as a signal amplification strategy, we designed a novel surface-enhanced Raman scattering (SERS)-lateral flow assay (LFA) strip for ultrasensitive detection of miR-21 and miR-196a-5p in non-small cell lung cancer (NSCLC) urine on a single test (T) line. 4-mercaptobenzoic acid or 5,5′-dithiobis-2-nitrobenzoic acid as Raman molecules was labeled and two hairpin DNA sequence was modified gold nanocages (GNCs) were designed as two SERS tags. Through target miRNA-triggered catalytic hairpin assembly (CHA), the double-stranded DNAs (H1–H2 complex) formed by SERS tags and the related hairpin-structured DNA sequence 2 (H2) were immobilized on a single T line of SERS-LFA strip. This generated abundant “hot spots” because of the formation of numerous H1–H2 complex thus facilitated the SERS measurement. Through this method, two kinds of miRNAs were analyzed, resulting in limits of detection of 2.08 pM and 3.31 pM for miR-21 in PBS buffer and human urine, 1.77 pM and 2.18 pM for miR-196a-5p in PBS buffer and human urine. Significantly, the SERS-LFA strip exhibited high specificity and good repeatability toward miRNAs. The whole detection time was only 30 min, which means that the high detection efficiency of the strip. The clinical feasibility of the proposed method was also evaluated by detecting the levels of miR-21 and miR-196a-5p in urine samples from NSCLC patients and healthy subjects. The developed SERS-LFA strip has wide application prospect in biomedical research, drug development and early clinical diagnosis. A novel surface-enhanced Raman scattering-lateral flow assay strip in combination with catalytic hairpin assembly was developed for rapid, sensitive, and simultaneous detection of multiple non-small cell lung cancer-related miRNAs on a single test line. • A simultaneous detection of multiple cancer biomarkers by catalytic hairpin assembly-based SERS-LFA strip on a single test line with high sensitivity and accuracy is proposed. • GNCs, as a kind of novel nanomaterial, can be prepared on a large scale and has good SERS reinforcement effect. • Catalytic hairpin assembly-based SERS-LFA strip shows favorable performance in clinical test, which can achieve the LODs as low as 3.31 pM (miR-21) and 2.18 pM (miR-196a-5p) in human urine." @default.
• W3175658908 created "2021-07-05" @default.
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• W3175658908 date "2021-09-01" @default.
• W3175658908 modified "2023-09-29" @default.
• W3175658908 title "Ultra-sensitive and high efficiency detection of multiple non-small cell lung cancer-related miRNAs on a single test line in catalytic hairpin assembly-based SERS-LFA strip" @default.
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• W3175658908 doi "https://doi.org/10.1016/j.aca.2021.338800" @default.
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