2022
DOI: 10.1016/j.bios.2022.114236
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Highly sensitive and reliable detection of microRNA for clinically disease surveillance using SERS biosensor integrated with catalytic hairpin assembly amplification technology

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Cited by 50 publications
(26 citation statements)
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“…100% accurate clinical diagnosis of breast cancer was achieved by Weng et al for 60 samples [ 278 ]. In the following study, the targeted miRNA-21 and miRNA-155 were amplified by applying the isothermal catalytic hairpin assembly (CHA) strategy before SERS analysis.…”
Section: Sers Clinical Applicationsmentioning
confidence: 99%
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“…100% accurate clinical diagnosis of breast cancer was achieved by Weng et al for 60 samples [ 278 ]. In the following study, the targeted miRNA-21 and miRNA-155 were amplified by applying the isothermal catalytic hairpin assembly (CHA) strategy before SERS analysis.…”
Section: Sers Clinical Applicationsmentioning
confidence: 99%
“…The application of the signal second order peak of Si 936 cm −1 as an internal standard calibration enabled the reliable quantitative detection of miRNA with the correlation coefficient (R2) of 0.99. Thus, the ultralow concentration of miRNA-21 and miRNA-155 was detected (0.398 fM and 0.215 fM, respectively) and a 100% accurate diagnosis of breast cancer was performed [ 278 ].…”
Section: Sers Clinical Applicationsmentioning
confidence: 99%
“…The EM enhancement, as well as CE, require a very small distance between the analyte molecule and the metallic surface, and the amplification enhancement factor (EF) of SERS is on the order of 10 8 –10 14 . The SERS has been widely used these days as the best analytical tool in trace amounts [ 119 , 120 ].…”
Section: Microneedle Used For Glucose Monitoringmentioning
confidence: 99%
“…As a class of nonenzymatic nucleic acid amplification circuits, catalytic hairpin assembly (CHA) has proved to be a versatile tool for amplifying and transducing signals. In CHA, the isothermal hybridization of two DNA hairpin reactants is activated and progressed by introducing an invading oligonucleotide analyte (e.g., a target DNA segment). Based on toehold-mediated branch migration, this targeting strand is displaced and recycled, making it available for another round of CHA, analogous to a catalyst, to guide more hairpin assembly events, which can yield distinct amplification and good turnover rate. , As such, CHA-based circuits have been engineered for the enzyme-free transduction of specific analyte binding in diverse signaling modalities, such as fluorescence or electrochemical current, ,, realizing the detection of nucleic acids, small molecules, and proteins. , In traditional CHA reactions, however, two hairpin species were positioned free in a homogeneous solution, such that the low local concentration of reactants brought slow reaction kinetics and insufficient conservation, particularly for ultralow target analytes. , Thus, it is desirable to speed up CHA operation and make it become more robust with respect to external disturbances. Remarkably, it has been demonstrated theoretically and experimentally that DNA supramolecular origami was employed as an exquisite platform to localize strand displacement reactions. With the increase of local concentration, DNA strands transferring from one “docking site” were sped up considerably.…”
Section: Introductionmentioning
confidence: 99%