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Chen P, Jiang P, Lin Q, Zeng X, Liu T, Li M, Yuan Y, Song S, Zhang J, Huang J, Ying B, Chen J. Simultaneous Homogeneous Fluorescence Detection of AFP and GPC3 in Hepatocellular Carcinoma Clinical Samples Assisted by Enzyme-Free Catalytic Hairpin Assembly. ACS APPLIED MATERIALS & INTERFACES 2022; 14:28697-28705. [PMID: 35699181 DOI: 10.1021/acsami.2c09135] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Simultaneous sensitive and cost-effective detection of multiple tumor markers has shown great potential for cancer diagnostics. Herein, we reported a simple enzyme-free parallel catalytic hairpin assembly (CHA) amplification strategy with N-methyl mesoporphyrin IX (NMM) and quantum dots (QDs) as signal reporters for the homogeneous fluorescent simultaneous detection of alpha-fetoprotein (AFP) and glypican-3 (GPC3). Upon selective binding, the released single-stranded DNA (ssDNA) from the two-aptamer double-stranded DNA (dsDNA) probes triggers CHA amplification, further releasing the G-quadruplex sequence and Ag+ from the C-Ag+-C structures at the same time. Then, NMM and CdTe QDs selectively recognize G-quadruplex and Ag+, respectively. Under optimized conditions, limits of detections (LODs) as low as 3 fg/mL for AFP and 0.25 fg/mL for GPC3 were achieved using fluorescence readout. Using color- and distance-based visual readouts, an LOD of 1 fg/mL for GPC3 was reached. This method was applied to quantitatively analyze AFP and GPC3 in 41 clinical serum samples of hepatocellular carcinoma (HCC) patients. The quantitative test results for AFP and GPC3 were consistent with those obtained using the electrochemiluminescence immunoassay (ECL-IA) clinical kit and correlated with radiological and pathological findings. The results of clinical tests demonstrated the potential of GPC3 as a tumor biomarker, and we propose a cut-off value of 2 ng/mL GPC3 for HCC.
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Affiliation(s)
- Piaopiao Chen
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Pengjun Jiang
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Qianli Lin
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Xianghu Zeng
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Tangyuheng Liu
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Mei Li
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yuan Yuan
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Siyang Song
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Junlong Zhang
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jin Huang
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Binwu Ying
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jie Chen
- Department of Laboratory Medicine, Med+X Center for Manufacturing Department of Radiology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
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Chen P, Wang Y, He Y, Huang K, Wang X, Zhou R, Liu T, Qu R, Zhou J, Peng W, Li M, Bai Y, Chen J, Huang J, Geng J, Xie Y, Hu W, Ying B. Homogeneous Visual and Fluorescence Detection of Circulating Tumor Cells in Clinical Samples via Selective Recognition Reaction and Enzyme-Free Amplification. ACS NANO 2021; 15:11634-11643. [PMID: 34129315 DOI: 10.1021/acsnano.1c02080] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Here we report a simple all-nucleic-acid enzyme-free catalyzed hairpin assembly assisted amplification strategy with quantum dots (QDs) as the nanoscale signal reporter for homogeneous visual and fluorescent detection of A549 lung cancer cells from clinical blood samples. This work was based on the phenomenon that CdTe QDs can selectively recognize Ag+ and C-Ag+-C and by using mucin 1 as the circulating tumor cells (CTCs) marker and aptamer as the recognition probe. Under optimized conditions, the limits of detections as low as 0.15 fg/mL of mucin 1 and 3 cells/mL of A549 cells were achieved with fluorescence signals. A 1 fg/mL concentration of mucin 1 and 100 cells/mL of A549 can be distinguished by the naked eye. This method was used to quantitatively analyze CTCs in 51 clinical whole blood samples of patients with lung cancer. The levels of CTCs detected in clinical samples by this method were consistent with those obtained using the folate receptor-polymerase chain reaction clinical test kit and correlated with radiologic and pathological findings.
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Affiliation(s)
- Piaopiao Chen
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Yue Wang
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Yaqin He
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Ke Huang
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Xiu Wang
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Ronghui Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China
| | - Tangyuheng Liu
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Runlian Qu
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Juan Zhou
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Wu Peng
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Mei Li
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Yunjin Bai
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Jie Chen
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Jin Huang
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Jia Geng
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Yi Xie
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Walter Hu
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Binwu Ying
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, Med+X Center for Manufacturing, West China Precision Medicine Industrial Technology Institute, Department of Urology, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
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A pH-responsive bioassay for sensitive colorimetric detection of adenosine triphosphate based on switchable DNA aptamer and metal ion-urease interactions. Anal Bioanal Chem 2021; 413:1533-1540. [PMID: 33462658 DOI: 10.1007/s00216-020-03136-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 12/08/2020] [Accepted: 12/17/2020] [Indexed: 12/15/2022]
Abstract
A facile and economic colorimetric strategy was designed for ATP detection by rationally using urease, a pH-responsive molecule, and a metal-mediated switchable DNA probe. By utilizing metal ions as a modulator of urease activity, the concentration of ATP is translated into pH change, which can be readily visualized by naked eye. An unmodified single-stranded DNA probe was designed, which consists of a target binding sequence and two flanked cytosine (C)-rich sequences. This C-rich single-stranded DNA can form a hairpin structure triggered by Ag+ ions via C-Ag+-C base mismatch. Upon introduction of ATP, Ag+-coordinated hairpin DNA structure will be broken and release the included Ag+, thus inhibiting the activity of urease. Conversely, urease can hydrolyze urea and raise pH value of the solution, resulting in the color change of the sensing solution. The proposed assay allows determination of ATP as low as 1.6 nM and shows a satisfactory result in human serum. Because of simple operation and low cost of this method, we believe it has a potential in point-of-care (POC) testing in resource-limited areas. Schematic illustration of pH-responsive colorimetric sensor for ATP detection based on switchable DNA aptamer and metal ion-urease interactions.
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Wang X, Chen W, Yang H, Yuan X, Huang K, Chen P, Ying B. Homogeneous assay based on the pre-reduction and selective cation exchange for detection of multiple targets by atomic spectrometry. Talanta 2020; 219:121387. [PMID: 32887089 DOI: 10.1016/j.talanta.2020.121387] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 07/03/2020] [Accepted: 07/06/2020] [Indexed: 02/05/2023]
Abstract
In view of the high sensitivity and good selectivity, chemical vapor generation atomic spectrometry (CVG-AS) and inductively coupled plasma mass spectrometer (ICP-MS), especially low-cost atomic fluorescence spectrometry (AFS) have been widely used in bioassay. However, the existing AS method is mostly based on heterogeneous strategies, and can't detect multiple targets in one system. In this study, we present the discovery and mechanism study of a phenomenon of Hg2+ pre-reduction that the concentration of Hg2+ decreased when it was mixed with the reductants (ascorbic acid (AA), SnCl2, or NaBH4/KBH4) over long-time reaction (hours) by CVG-AFS and ICP-MS. A homogeneous Cu2+ assay method was developed based on the competition reaction of Cu2+ and Hg2+ for consuming AA, and its application in the detection of pyrophosphate (PPi) and alkaline phosphatase (ALP) was investigated based on the PPi complexation with Cu2+, and ALP hydrolyzation of PPi using CVG-AFS as a representative detector. Subsequently, in order to further verify the applicability of the system, cation exchange reaction (CER) was utilized here based on the selectively recognize Ag+ and C-Ag+-C by CuS nanoparticles (NPs). As the exchanged Cu2+ from CuS NPs can be sensitively and selectively detected via above-mentioned Cu2+ assay method, this strategy can be extended for the Ag+, DNA and prostate specific antigen (PSA) detection based on base complementary pairing and the specific recognition of aptamer. Under the optimal experimental conditions, the system showed high sensitivity for the detection of Cu2+, PPi, ALP, Ag+, DNA, and PSA, with limit of detections (LODs) of 0.12 nmol L-1, 25 μmol L-1, 0.025 U/L, 0.2 nmol L-1, 0.05 nmol L-1, and 0.03 ng/mL, respectively. The method was successfully used to determination Cu2+, ALP, and PSA in human serums, showing similar results with those of ICP-MS and kits methods.
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Affiliation(s)
- Xiu Wang
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan, 610068, China
| | - Wanli Chen
- College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, 637000, China
| | - Haiyan Yang
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan, 610068, China
| | - Xin Yuan
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Ke Huang
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan, 610068, China.
| | - Piaopiao Chen
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, 610041, China.
| | - Binwu Ying
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan, 610041, China.
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Hu P, Wang X, Wei L, Dai R, Yuan X, Huang K, Chen P. Selective recognition of CdTe QDs and strand displacement signal amplification-assisted label-free and homogeneous fluorescence assay of nucleic acid and protein. J Mater Chem B 2020; 7:4778-4783. [PMID: 31389950 DOI: 10.1039/c9tb00753a] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Due to their simplicity of design and operation, homogeneous bioassays have been of great interest to researchers. Herein, a label-free and free separation fluorescence sensing platform was constructed for the determination of nucleic acid and prostate specific antigen (PSA) using CdTe QDs as the signal molecule. In our previous work, we surprisingly found that the CdTe QDs can selectively distinguish Ag+ and the C-Ag+-C complex, which was the basis of the sensor. On the basis of the selective cation exchange reaction (CER), combined with the signal amplification of the strand displacement reaction (SDR), this work was first applied for the sensitive analysis of DNA. There are two types of hairpin structures in this sensing system, including the recognition probe (HP) and Ag+, which formed the C-Ag+-C structure, and the hairpin structure formed by the helper DNA itself. In this work, target DNA can trigger the SDR that generates lots of HP-helper double-stranded DNA (dsDNA) and recycles the target DNA while releasing a large amount of Ag+, thus quenching the fluorescence signal of CdTe QDs to achieve the highly sensitive detection of DNA. In order to verify the versatility of this system using DNA as a bridge and aptamers as recognition probes, we extended the system to the detection of PSA. After examining its experimental performance, it was determined that this method displayed good analytical capability for DNA in the range of 10-13-10-10 M and PSA in the range of 10-13-10-10 g mL-1 with low 25 fM and 30 fg mL-1 limits of detection (LODs), respectively; high selectivity for both the target sequence and protein was shown. In addition, this platform was successfully used for the analysis of PSA in serum samples.
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Affiliation(s)
- Pingyue Hu
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610068, China.
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A visual detection of human immunodeficiency virus gene using ratiometric method enabled by phenol red and target-induced catalytic hairpin assembly. Talanta 2020; 219:121202. [PMID: 32887109 DOI: 10.1016/j.talanta.2020.121202] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 05/18/2020] [Accepted: 05/20/2020] [Indexed: 01/12/2023]
Abstract
Relying on the specific coordination of Ag+ and mismatched cytosine-cytosine (C-C), the high-efficiency inhibition of urease by Ag+ ion, and the rapid and sensitive response of phenol red to pH, a sensitive ratiometric sensor has been designed for visual detection of human immunodeficiency virus gene (HIV DNA). This sensor utilizes the HIV DNA to initiate catalytic hairpin assembly (CHA) process, releasing Ag+ to inhibit subsequent urease-catalyzed urea hydrolysis and prevent the pH of the solution from rising. The CHA process and the absorbance ratio of phenol red at different wavelengths (A559/A432) amplify the signal, allowing the sensor to detect HIV DNA from 10 to 130 nM in a sensitive and highly selective manner with a low detection limit of 7.8 nM. In addition, this sensor can visually distinguish different concentrations of HIV DNA within a certain range and possesses a good recovery in 1% of serum samples, which will provide new ideas for biosensor design, dipstick test, blood test, and other clinical disease prevention.
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Chen P, Bai Y, Tang Y, Yan S, Wang X, Wei W, Wang J, Zhang M, Ying B, Geng J. Rapid and highly sensitive visual detection of oxalate for metabolic assessment of urolithiasis via selective recognition reaction of CdTe quantum dots. J Mater Chem B 2020; 8:7677-7684. [PMID: 32716463 DOI: 10.1039/d0tb01108h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A homogeneous visual determination of oxalate method based on selective quenching reaction of QDs was constructed for metabolic assessment of urolithiasis.
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Chen P, Jiang X, Huang K, Hu P, Li X, Wei L, Liu W, Wei L, Tao C, Ying B, Wei X, Geng J. Multimode MicroRNA Sensing via Multiple Enzyme-Free Signal Amplification and Cation-Exchange Reaction. ACS APPLIED MATERIALS & INTERFACES 2019; 11:36476-36484. [PMID: 31532182 DOI: 10.1021/acsami.9b15594] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Piaopiao Chen
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Xin Jiang
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Ke Huang
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Pingyue Hu
- College of Chemistry and Material Science, Sichuan Normal University, Chengdu, Sichuan 610068, China
| | - Xinqiong Li
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Long Wei
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Wangzhong Liu
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Liangwan Wei
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Chuanmin Tao
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Binwu Ying
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Xiawei Wei
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
| | - Jia Geng
- Department of Laboratory Medicine, State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center for Biotherapy, Chengdu, Sichuan 610041, China
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Dai R, Hu P, Wang X, Wang S, Song X, Huang K, Chen P. Visual/CVG-AFS/ICP-MS multi-mode and label-free detection of target nucleic acids based on a selective cation exchange reaction and enzyme-free strand displacement amplification. Analyst 2019; 144:4407-4412. [PMID: 31210203 DOI: 10.1039/c9an00642g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Visual/CVG-AFS/ICP-MS three-mode detection of DNA based on the selective cation exchange reaction and enzyme-free strand displacement amplification.
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Affiliation(s)
- Rui Dai
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Pingyue Hu
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Xiu Wang
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Shixin Wang
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Xinmei Song
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Ke Huang
- College of Chemistry and Material Science
- Sichuan Normal University
- Chengdu
- China
| | - Piaopiao Chen
- Department of Laboratory Medicine
- State Key Laboratory of Biotherapy and Cancer Center
- West China Hospital
- Sichuan University and Collaborative Innovation Center for Biotherapy
- Chengdu
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