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Zhou P, Pan Y, Pan W, Lu S, Yin J, Li N, Tang B. Dual-AND Logic Gate-Based Strip Assay for Amplified Detection of Four miRNAs and Diagnosis of Lung Cancer. Anal Chem 2023; 95:1280-1286. [PMID: 36574347 DOI: 10.1021/acs.analchem.2c04121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The detection of circulating tumor microRNAs (miRNAs) holds great promise for the noninvasive and early-stage diagnosis of cancer. However, the low abundance of lung cancer-related miRNAs and the false-positive results of single miRNA detection limited the development of strip-based point-of-care testing methods in clinic. We developed a duplex-specific nuclease (DSN)-mediated and dual-AND logic gate-based triple-line lateral flow strip detection system for the rapid and simultaneous detection of four miRNAs of lung cancer in a single strip test. This system combines DSN-mediated signal amplification with AND logic gate-based simple signal output. Meanwhile, the limit of detection of this platform was calculated to be 26.51 fM. Furthermore, this assay was used to detect lung cancer-related miRNAs from serum in a homogeneous and separation-free format, which could discriminate lung cancer patients from healthy individuals with an accuracy of 100%. Our approach provides a simple and easy-to-handle method for the diagnosis of lung cancer in clinic.
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Affiliation(s)
- Ping Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Yingbo Pan
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Wei Pan
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Sumei Lu
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Laboratory Medicine, Jinan 250014, Shandong, P. R. China
| | - Jiaqi Yin
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Na Li
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Institute of Molecular and Nano Science, Shandong Normal University, Jinan 250014, P. R. China
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Alom KM, Ravi Kumara GS, Seo YJ. 22AG G-quadruplex RNA/QnMorpholine-mediated fluorimetric detection of miR-21. Anal Biochem 2022; 656:114879. [PMID: 36084699 DOI: 10.1016/j.ab.2022.114879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/19/2022] [Accepted: 08/24/2022] [Indexed: 11/19/2022]
Abstract
Herein we report a simple ligation/transcription-mediated system, using a 22AG G-quadruplex RNA secondary structure and a fluorescence-inducing QnMorpholine probe, for the detection of miR-21. In the presence of the target miR-21, two oligonucleotide probes (promoter and reporter) were ligated, thereby transcribing the 22AG RNA sequence, a complement of the reporter probe. In contrast, in the absence of this target-induced ligation, the reporter complement could not be transcribed to produce the 22AG RNA sequence. Subsequent addition of the QnMorpholine probe resulted in binding with the 22AG G-quadruplex RNA, thereby generating high fluorescence; no fluorescence occurred in the absence of this secondary structure. Hence, the presence of miR-21 was evidenced by a target-induced high-intensity signal. This simple one-pot fluorimetric system, which could detect miR-21 of up to 3.08 femtomolar in less than 30 min, holds promise as a diagnostic tool for selective and sensitive miRNA detection.
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Affiliation(s)
- Kazi Morshed Alom
- Department of Chemistry, Jeonbuk National University, Jeonju, 561-756, Republic of Korea
| | | | - Young Jun Seo
- Department of Chemistry, Jeonbuk National University, Jeonju, 561-756, Republic of Korea.
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