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Detection of Fusobacterium nucleatum subspecies in the saliva of pre-colorectal cancer patients, using tandem mass spectrometry. Arch Oral Biol 2021; 134:105337. [PMID: 34929558 DOI: 10.1016/j.archoralbio.2021.105337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 11/25/2021] [Accepted: 12/06/2021] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Rising evidence links Fusobacterium nucleatum (F. nucleatum) with its four subspecies; nucleatum, polymorphum, animalis, and vincentii, with the development of colorectal cancer (CRC) and its precursor colorectal adenoma (CRA). This study aims to optimize a technique for and explore the capability of matrix-assisted laser-desorption ionization-tandem time-of-flight mass spectrometry (MALDI-TOF/TOF MS) to detect F. nucleatum subspecies directly from the saliva samples of CRA patients and controls without preculturing. DESIGN Saliva samples were collected from four CRA patients and eight controls. Proteins were extracted and subjected to solid-phase extraction fractionation, enzymatically digested, and analyzed by MALDI-TOF/TOF MS. F. nucleatum subspecies strains were cultured and used as a positive control. RESULTS A proteomics approach was developed to identify F. nucleatum subspecies directly from saliva samples. With this approach, the bacterial culturing step, which could take up to seven days, was bypassed. Overall, 157 F. nucleatum subspecies proteins were detected in the saliva samples. F. nucleatum subsp. nucleatum was absent in the patients while detected in half of the controls. CONCLUSION This study presents a novel technique for detecting F. nucleatum subspecies from saliva specimens that could later be employed to better understand a potential role of those subspecies in CRC development.
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Non-Antibody-Based Binders for the Enrichment of Proteins for Analysis by Mass Spectrometry. Biomolecules 2021; 11:biom11121791. [PMID: 34944435 PMCID: PMC8698613 DOI: 10.3390/biom11121791] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/24/2021] [Accepted: 11/27/2021] [Indexed: 02/07/2023] Open
Abstract
There is often a need to isolate proteins from body fluids, such as plasma or serum, prior to further analysis with (targeted) mass spectrometry. Although immunoglobulin or antibody-based binders have been successful in this regard, they possess certain disadvantages, which stimulated the development and validation of alternative, non-antibody-based binders. These binders are based on different protein scaffolds and are often selected and optimized using phage or other display technologies. This review focuses on several non-antibody-based binders in the context of enriching proteins for subsequent liquid chromatography-mass spectrometry (LC-MS) analysis and compares them to antibodies. In addition, we give a brief introduction to approaches for the immobilization of binders. The combination of non-antibody-based binders and targeted mass spectrometry is promising in areas, like regulated bioanalysis of therapeutic proteins or the quantification of biomarkers. However, the rather limited commercial availability of these binders presents a bottleneck that needs to be addressed.
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3
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Advances in aptamer-based nanomaterials for separation and analysis of non-genetic biomarkers in biofluids. Sci China Chem 2021. [DOI: 10.1007/s11426-020-9955-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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4
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Discussion of the protein characterization techniques used in the identification of membrane protein targets corresponding to tumor cell aptamers. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.11.061] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Yu J, Di S, Yu H, Ning T, Yang H, Zhu S. Insights into the structure-performance relationships of extraction materials in sample preparation for chromatography. J Chromatogr A 2020; 1637:461822. [PMID: 33360779 DOI: 10.1016/j.chroma.2020.461822] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 01/23/2023]
Abstract
Sample preparation is one of the most crucial steps in analytical processes. Commonly used methods, including solid-phase extraction, dispersive solid-phase extraction, dispersive magnetic solid-phase extraction, and solid-phase microextraction, greatly depend on the extraction materials. In recent decades, a vast number of materials have been studied and used in sample preparation for chromatography. Due to the unique structural properties, extraction materials significantly improve the performance of extraction devices. Endowing extraction materials with suitable structural properties can shorten the pretreatment process and improve the extraction efficiency and selectivity. To understand the structure-performance relationships of extraction materials, this review systematically summarizes the structural properties, including the pore size, pore shape, pore volume, accessibility of active sites, specific surface area, functional groups and physicochemical properties. The mechanisms by which the structural properties influence the extraction performance are also elucidated in detail. Finally, three principles for the design and synthesis of extraction materials are summarized. This review can provide systematic guidelines for synthesizing extraction materials and preparing extraction devices.
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Affiliation(s)
- Jing Yu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, P. R. China
| | - Siyuan Di
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, P. R. China
| | - Hao Yu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, P. R. China
| | - Tao Ning
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, P. R. China
| | - Hucheng Yang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, P. R. China
| | - Shukui Zhu
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, P. R. China.
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6
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Wang Y, Zhang K, Huang X, Qiao L, Liu B. Mass Spectrometry Imaging of Mass Tag Immunoassay Enables the Quantitative Profiling of Biomarkers from Dozens of Exosomes. Anal Chem 2020; 93:709-714. [PMID: 33315384 DOI: 10.1021/acs.analchem.0c03904] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuning Wang
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, China
| | - Kun Zhang
- Department of Neurosurgery, Shanghai Children’s Hospital, Shanghai Jiao Tong University, Shanghai 200062, China
| | - Xuedong Huang
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, China
| | - Liang Qiao
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, China
| | - Baohong Liu
- Department of Chemistry, Shanghai Stomatological Hospital, State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai 200438, China
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7
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YANG JW, WANG CY, LUO L, GUO L, XIE JW. Applications and Prospects of Oligonucleotide Aptamers in Mass Spectrometry. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1016/s1872-2040(20)60056-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Radko S, Ptitsyn K, Novikova S, Kiseleva Y, Moysa A, Kurbatov L, Mannanova M, Zgoda V, Ponomarenko E, Lisitsa A, Archakov A. Evaluation of Aptamers as Affinity Reagents for an Enhancement of SRM-Based Detection of Low-Abundance Proteins in Blood Plasma. Biomedicines 2020; 8:E133. [PMID: 32456365 PMCID: PMC7277749 DOI: 10.3390/biomedicines8050133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 05/18/2020] [Accepted: 05/22/2020] [Indexed: 12/12/2022] Open
Abstract
Selected reaction monitoring (SRM) is a mass spectrometric technique characterized by the exceptionally high selectivity and sensitivity of protein detection. However, even with this technique, the quantitative detection of low- and ultralow-abundance proteins in blood plasma, which is of great importance for the search and verification of novel protein disease markers, is a challenging task due to the immense dynamic range of protein abundance levels. One approach used to overcome this problem is the immunoaffinity enrichment of target proteins for SRM analysis, employing monoclonal antibodies. Aptamers appear as a promising alternative to antibodies for affinity enrichment. Here, using recombinant protein SMAD4 as a model target added at known concentrations to human blood plasma and SRM as a detection method, we investigated a relationship between the initial amount of the target protein and its amount in the fraction enriched with SMAD4 by an anti-SMAD4 DNA-aptamer immobilized on magnetic beads. It was found that the aptamer-based enrichment provided a 30-fold increase in the sensitivity of SRM detection of SMAD4. These results indicate that the aptamer-based affinity enrichment of target proteins can be successfully employed to improve quantitative detection of low-abundance proteins by SRM in undepleted human blood plasma.
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Affiliation(s)
- Sergey Radko
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Konstantin Ptitsyn
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Svetlana Novikova
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Yana Kiseleva
- Russian Scientific Center of Roentgenoradiology, Moscow 117485, Russia;
| | - Alexander Moysa
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Leonid Kurbatov
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Maria Mannanova
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Victor Zgoda
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Elena Ponomarenko
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Andrey Lisitsa
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
| | - Alexander Archakov
- Institute of Biomedical Chemistry, Moscow 119121, Russia; (K.P.); (S.N.); (A.M.); (L.K.); (M.M.); (V.Z.); (E.P.); (A.L.); (A.A.)
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Aptamer-gold nanoparticle doped covalent organic framework followed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for selective enrichment and detection of human insulin. J Chromatogr A 2019; 1615:460741. [PMID: 31810620 DOI: 10.1016/j.chroma.2019.460741] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 11/24/2019] [Accepted: 11/26/2019] [Indexed: 12/18/2022]
Abstract
In this work, we introduced an aptamer modified Au nanoparticles doped covalent organic frameworks composite (IBAs-AuNPs/COF) to improve the property of selective enrichment of insulin from serum samples. The Au nanoparticles were immobilized on imine-based COF by in-situ reduction reaction via mussel inspired polydopamine coating, and then sulfhydryl-containing aptamers were bonded to the surface of AuNPs through an Au-S linkage. Due to the excellent adsorption property of COF and specific recognition between insulin and IBAs, the IBAs-AuNPs/COF composites show selective and satisfactory extraction property to insulin in serum samples. Excellent specifity was obtained for insulin in the presence of 50-fold interfering substances including human immunoglobulin, lysozyme and biotin. The concentrations of insulin in the range of 1.0 to 50.0 μg L-1 show good linear relationship (R2 = 0.9917) with limit of detection and limit of quantitation of 0.28 μg L-1 and 0.93 μg L-1, respectively. Then, the IBAs-AuNPs/COF composites were applied to enrich insulin in serum samples followed by analysis with matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF-MS). After the recovery experiment, the developed method shows good recoveries in range of 91.6%-112.4% with low RSD value (2.4%-9.4%, n = 3) for diabetic and healthy serum samples. The developed IBAs-AuNPs/COF composites propose a new perspective for selective and efficient enrichment of biomarkers in serum samples by functionalized COF.
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10
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Wang Z, Hu X, Sun N, Deng C. Aptamer-functionalized magnetic metal organic framework as nanoprobe for biomarkers in human serum. Anal Chim Acta 2019; 1087:69-75. [PMID: 31585568 DOI: 10.1016/j.aca.2019.08.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/13/2019] [Accepted: 08/19/2019] [Indexed: 12/20/2022]
Abstract
Human serum is a huge bioinformatics database of human physiological and pathological state, many proteins/peptides among which can serve as biomarkers for monitoring human's health condition, thereby being worth exploring. The simple and fast capture of biomarkers from human serum is the first key step to realize their accurate detection. In this work, we developed the aptamer functionalized magnetic metal organic framework nanoprobe, and furtherly combined with mass spectrometry technology to establish an efficient method of identifying biomarkers. Taking insulin as example of biomarker in human serum, we developed sulfhydryl human insulin aptamer functionalized magnetic metal organic framework (denoted as Mag MOF@Au@HIA) through the post-synthetic modification of MIL-101(Cr)-NH2 for testing the applicability of the established method. Depending on the strong magnetic responsiveness and high specific area as well as high-loaded human insulin aptamers, the limit of detection of insulin was down to 1 ng/mL and 2 ng/mL in the standard insulin solution and human serum, respectively. Moreover, a good linear relationship (R2 = 0.998) was obtained by using standard insulin solution with concentration range from 100 ng/mL to 5 ng/mL, based on which the capture recovery of insulin with Mag MOF@Au@HIA from human serum was demonstrated to be excellent. All of the results indicate that the aptamer-functionalized magnetic metal organic framework is a promising nanoprobe for biomarkers capture in human serum.
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Affiliation(s)
- Zidan Wang
- Department of Chemistry and the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200433, China
| | - Xufang Hu
- Department of Chemistry and the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200433, China
| | - Nianrong Sun
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, 200433, China.
| | - Chunhui Deng
- Department of Chemistry and the Fifth People's Hospital of Shanghai, Fudan University, Shanghai, 200433, China; Institutes of Biomedical Sciences, Collaborative Innovation Center of Genetics and Development, Fudan University, Shanghai, 200433, China.
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11
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Ptitsyn KG, Novikova SE, Kiseleva YY, Moysa AA, Kurbatov LK, Farafonova TE, Radko SP, Zgoda VG, Archakov AI. [Use of DNA-aptamers for enrichment of low abundant proteins in cellular extracts for quntitative detection by selected reaction monitoring]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2019; 64:5-9. [PMID: 29460828 DOI: 10.18097/pbmc20186401005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The relationship between the amount of a target protein in a complex biological sample and its amount measured by selected reaction monitoring (SRM) mass spectrometry upon the affinity enrichment of target protein with aptamers immobilized on a solid phase was studied. Human thrombin added in known concentrations to cellular extracts derived from bacterial cells was used as model target protein. It has been demonstrated that the affinity enrichment of thrombin in cellular extracts by means of the thrombin-binding aptamer immobilized on the surface of magnetic microbeads results in an approximately 10-fold increase of the concentration of target protein and a 100-fold decrease of the low limit of a target protein concentration range where its quantitative detection by SRM is possible without an interference from other peptides present in a tryptic digest.
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Affiliation(s)
- K G Ptitsyn
- Institute of Biomedical Chemistry, Moscow, Russia
| | - S E Novikova
- Institute of Biomedical Chemistry, Moscow, Russia
| | - Y Y Kiseleva
- Russian Scientific Center of Roentgenoradiology, Moscow, Russia
| | - A A Moysa
- Institute of Biomedical Chemistry, Moscow, Russia
| | - L K Kurbatov
- Institute of Biomedical Chemistry, Moscow, Russia
| | | | - S P Radko
- Institute of Biomedical Chemistry, Moscow, Russia
| | - V G Zgoda
- Institute of Biomedical Chemistry, Moscow, Russia
| | - A I Archakov
- Institute of Biomedical Chemistry, Moscow, Russia
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12
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Fu B, Park Y, Kim KT, Chen K, Zou G, Wei Q, Peng S, Chen Y, Kim BH, Zhou X. A novel nucleic acid aptamer tag: a rapid fluorescence strategy using a self-constructing G-quadruplex from AGG trinucleotide repeats. Chem Commun (Camb) 2018; 54:11487-11490. [PMID: 30256356 DOI: 10.1039/c8cc05197f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Herein, we have developed a novel fluorescence labeling strategy for nucleic acid aptamers based on self-assembling between AGG tri-nucleotide repeats and a pyrene-modified oligonucleotide. This strategy could be an effective tool for developing targeting-imaging systems and biosensor systems to detect target molecules.
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Affiliation(s)
- Boshi Fu
- College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education, Wuhan University, Wuhan, Hubei 430072, P. R. China.
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13
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Wang Y, Du R, Qiao L, Liu B. Ultrasensitive profiling of multiple biomarkers from single cells by signal amplification mass spectrometry. Chem Commun (Camb) 2018; 54:9659-9662. [PMID: 30101261 DOI: 10.1039/c8cc05308a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A signal amplification protocol based on mass spectrometry (MS) was developed to profile simultaneously multiple biomarkers from a single cell using various mass label (ML)-modified Au nanoparticles (AuNPs). The strategy with ultrahigh sensitivity and specificity has potential prospects in the deep exploration of molecular and cellular characterization.
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Affiliation(s)
- Yuning Wang
- Department of Chemistry, Shanghai Stomatological Hospital, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, China.
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Chen P, Wu P, Zhang Y, Chen J, Jiang X, Zheng C, Hou X. Strand Displacement-Induced Enzyme-Free Amplification for Label-Free and Separation-Free Ultrasensitive Atomic Fluorescence Spectrometric Detection of Nucleic Acids and Proteins. Anal Chem 2016; 88:12386-12392. [PMID: 28193041 DOI: 10.1021/acs.analchem.6b03633] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In previous work, we have developed a simple strategy for a label-free and separation-free bioassay for target DNA and protein, with the limit of detection at the nM level only. Herein, taking advantage of atomic fluorescence spectrometric detection of metal ions and amplification of DNA, a label-free and separation-free ultrasensitive homogeneous DNA analytical platform for target DNA and protein detection was developed on the basis of an enzyme-free strand displacement signal amplification strategy for dramatically improved detectability. Using the T-Hg2+-T hairpin structure as the probe, the target DNA binds with HP (T-Hg2+-T hairpin structure) and released the Hg2+ first; then, the P4 (help DNA) hybridizes with target-P3 complex and free the target DNA, which is used to trigger another reaction cycle. The cycling use of the target amplifies the mercury atomic fluorescence intensity for ultrasensitive DNA detection. Moreover, the enzyme-free strand displacement signal amplification analytical system was further extended for protein detection by introducing an aptamer-P2 arched structure with thrombin as a model analyte. The current homogeneous strategy provides an ultrasensitive AFS detection of DNA and thrombin down to the 0.3 aM and 0.1 aM level, respectively, with a high selectivity. This strategy could be a promising unique alternative for nucleic acid and protein assay.
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Affiliation(s)
- Piaopiao Chen
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Peng Wu
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Yuxiang Zhang
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Junbo Chen
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Xiaoming Jiang
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Chengbin Zheng
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
| | - Xiandeng Hou
- College of Chemistry, and ‡Analytical & Testing Center, Sichuan University , 29 Wangjiang Road, Chengdu, Sichuan 610064, China
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Qin C, Wen W, Zhang X, Gu H, Wang S. Visual detection of thrombin using a strip biosensor through aptamer-cleavage reaction with enzyme catalytic amplification. Analyst 2016; 140:7710-7. [PMID: 26451394 DOI: 10.1039/c5an01712b] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A new class of strip biosensors has been established based on well-distributed thrombin aptamer-linked gold nanoparticle aggregates, which will undergo a cracking reaction when the target recognizes its homologous aptamer. Combining the aptamer-cleavage reaction with the enzyme catalytic amplification system, our proposed lateral flow strip biosensor (LFB) is capable of visually detecting 6.4 pM of thrombin without instrumentation within 12 minutes. Under the optimal conditions, the quantitative detection of thrombin by a portable strip reader exhibited a linear relationship between the peak area and the concentration of thrombin in the range of 6.4 pM-500 nM with a detection limit of 4.9 pM, which is three orders of magnitude lower than that of the aptamer-functionalized gold nanoparticle-based LFB (2.5 nM, Xu et al., Anal. Chem., 2009, 81, 669-675). As the aptamers have no special requirements and the gold nanoparticles can also be replaced by other metallic nanoparticles, this method for strip sensing is expected to be generally applicable in point of care testing, home testing, medical diagnostics, clinical diagnosis, and environmental monitoring.
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Affiliation(s)
- Chunyan Qin
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China.
| | - Wei Wen
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China.
| | - Xiuhua Zhang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China.
| | - Haoshuang Gu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China.
| | - Shengfu Wang
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules & College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, PR China.
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An evaluation of an aptamer for use as an affinity reagent with MS: PCSK9 as an example protein. Bioanalysis 2016; 8:1557-1564. [PMID: 27397798 DOI: 10.4155/bio-2016-0046] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND For quantitative immunoaffinity IA-LC-MS, the utility of antibodies has been demonstrated many times but the utility of aptamers as affinity reagents is unproven. METHODS Immunoaffinity reagents including a monoclonal antibody and an aptamer were coupled to magnetic beads and used as part of an enrichment strategy for PCSK9 quantitation in plasma. RESULTS With limited method development, we have established a comparison of an anti-PCSK9 aptamer with an anti-PCSK9 monoclonal antibody. The background that results from a tryptic digest of affinity enrichment in plasma was demonstrated for each reagent using high-resolution full scan MS. The assay recovery was demonstrated for multiple concentrations of aptamer in plasma with different concentrations of PCSK9 protein. CONCLUSION The aptamer achieved comparable enrichment to the antibody, but with lower peptide background, thus demonstrating the potential use of aptamers for IA-LC-MS.
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Multiplexed MALDI-MS arrays for screening of MIP solid phase extraction materials. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1021:213-220. [DOI: 10.1016/j.jchromb.2015.10.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 10/19/2015] [Accepted: 10/22/2015] [Indexed: 12/21/2022]
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Subtractive Cell-SELEX Selection of DNA Aptamers Binding Specifically and Selectively to Hepatocellular Carcinoma Cells with High Metastatic Potential. BIOMED RESEARCH INTERNATIONAL 2016; 2016:5735869. [PMID: 27119081 PMCID: PMC4826907 DOI: 10.1155/2016/5735869] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 02/25/2016] [Accepted: 03/07/2016] [Indexed: 12/14/2022]
Abstract
Relapse and metastasis are two key risk factors of hepatocellular carcinoma (HCC) prognosis; thus, it is emergent to develop an early and accurate detection method for prognostic evaluation of HCC after surgery. In this study, we sought to acquire oligonucleotide DNA aptamers that specifically bind to HCC cells with high metastatic potential. Two HCC cell lines derived from the same genetic background but with different metastatic potential were employed: MHCC97L (low metastatic properties) as subtractive targets and HCCLM9 (high metastatic properties) as screening targets. To mimic a fluid combining environment, initial DNA aptamers library was firstly labelled with magnetic nanoparticles using biotin-streptavidin system and then applied for aptamers selection. Through 10-round selection with subtractive Cell-SELEX, six aptamers, LY-1, LY-13, LY-46, LY-32, LY-27/45, and LY-7/43, display high affinity to HCCLM9 cells and do not bind to MHCC97L cells, as well as other tumor cell lines, including breast cancer, lung cancer, colon adenocarcinoma, gastric cancer, and cervical cancer, suggesting high specificity for HCCLM9 cells. Thus, the aptamers generated here will provide solid basis for identifying new diagnostic targets to detect HCC metastasis and also may provide valuable clues for developing new targeted therapeutics.
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Liu C, Liu X, Qin Y, Deng C, Xiang J. A simple regenerable electrochemical aptasensor for the parallel and continuous detection of biomarkers. RSC Adv 2016. [DOI: 10.1039/c6ra09284e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this present work, a simple regenerable electrochemical aptasensor for the parallel and continuous detection of protein biomarkers is reported.
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Affiliation(s)
- Chunyan Liu
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Xi Liu
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Yun Qin
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Chunyan Deng
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
| | - Juan Xiang
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha 410083
- P. R. China
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Xiong Y, Deng C, Zhang X, Yang P. Designed synthesis of aptamer-immobilized magnetic mesoporous silica/Au nanocomposites for highly selective enrichment and detection of insulin. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8451-6. [PMID: 25854412 DOI: 10.1021/acsami.5b00515] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We designed and synthesized aptamer-immobilized magnetic mesoporous silica/Au nanocomposites (MMANs) for highly selective detection of unlabeled insulin in complex biological media using MALDI-TOF MS. The aptamer was easily anchored onto the gold nanoparticles in the mesochannels of MMANs with high capacity for highly efficient and specific enrichment of insulin. With the benefit from the size-exclusion effect of the mesoporous silica shell with a narrow pore size distribution (∼2.9 nm), insulin could be selectively detected despite interference from seven untargeted proteins with different size dimensions. This method exhibited an excellent response for insulin in the range 2-1000 ng mL(-1). Moreover, good recoveries in the detection of insulin in 20-fold diluted human serum were achieved. We anticipate that this novel method could be extended to other biomarkers of interest and potentially applied in disease diagnostics.
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Affiliation(s)
- Ya Xiong
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Chunhui Deng
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Xiangmin Zhang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Pengyuan Yang
- Department of Chemistry and Institutes of Biomedical Sciences, Fudan University, 220 Handan Road, Shanghai 200433, China
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Du F, Guo L, Qin Q, Zheng X, Ruan G, Li J, Li G. Recent advances in aptamer-functionalized materials in sample preparation. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2015.01.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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