1
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Chen Y, Jiang B, Yuan H, Zhu X, Liu J, Zhang X, Liang Z, Wang L, Zhang L, Zhang Y. Fully integrated protein absolute quantification platform for analysis of multiple tumor markers in human plasma. Talanta 2021; 226:122102. [PMID: 33676658 DOI: 10.1016/j.talanta.2021.122102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/04/2021] [Accepted: 01/09/2021] [Indexed: 11/18/2022]
Abstract
In this study, we developed a fully integrated protein absolute quantification platform for simultaneous analysis of multiple tumor markers in human plasma, by which multiple target proteins (alpha-fetoprotein, prostate-specific antigen, carcino-embryonic antigen and mucin-1) were firstly enriched by aptamers immobilized capillary column using graphene oxide modified polymer microsphere as the separation matrix, and then the eluted target proteins were online denatured, reduced, desalted and digested by our developed fully automated sample treatment device (FAST), finally the resulting peptides were analyzed by parallel reaction monitoring (PRM) on LTQ-orbitrap velos mass spectrometry. Compared to traditional ELISA assay, the platform exhibited significant advantages such as short analysis time, low limit of detection, and ease of automation. Furthermore, our developed platform was also applied in the absolute quantification of tumor markers from clinical human plasma samples, and the results were comparable to those obtained by clinical immunoassay. All the results demonstrated that such a platform could provide a promising tool for achieving high sensitivity, high accuracy, and high throughput detection of disease related protein markers in the routine physical examination and clinical disease diagnosis.
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Affiliation(s)
- Yuanbo Chen
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Bo Jiang
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China
| | - Huiming Yuan
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China.
| | - Xudong Zhu
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jianhui Liu
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaodan Zhang
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China
| | - Zhen Liang
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China
| | - Liming Wang
- The Second Affiliated Hospital of Dalian Medical University, Dalian, 116027, China
| | - Lihua Zhang
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China.
| | - Yukui Zhang
- National Chromatographic Research and Analysis Center, Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China
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2
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Nevídalová H, Michalcová L, Glatz Z. Capillary electrophoresis-based immunoassay and aptamer assay: A review. Electrophoresis 2020; 41:414-433. [PMID: 31975407 DOI: 10.1002/elps.201900426] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 12/31/2022]
Abstract
Over the last two decades, the group of techniques called affinity probe CE has been widely used for the detection and the determination of several types of biomolecules with high sensitivity. These techniques combine the low sample consumption and high separation power of CE with the selectivity of the probe to the target molecule. The assays can be defined according to the type of probe used: CE immunoassays, with an antibody as the probe, or aptamer-based CE, with an aptamer as the probe. Immunoassays are generally divided into homogeneous and heterogeneous groups, and homogeneous variant can be further performed in competitive or noncompetitive formats. Interacting partners are free in solution at homogeneous assay, as opposed to heterogeneous analyses, where one of them is immobilized onto a solid support. Highly sensitive fluorescence, chemiluminescence or electrochemical detections were typically used in this type of study. The use of the aptamers as probes has several advantages over antibodies such as shorter generation time, higher thermal stability, lower price, and lower variability. The aptamer-based CE technique was in practice utilized for the determination of proteins in biological fluids and environmentally or clinically important small molecules. Both techniques were also transferred to microchip. This review is focused on theoretical principles of these techniques and a summary of their applications in research.
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Affiliation(s)
- Hana Nevídalová
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Lenka Michalcová
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Zdeněk Glatz
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
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3
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Guo J, Lin H, Wang J, Lin Y, Zhang T, Jiang Z. Recent advances in bio-affinity chromatography for screening bioactive compounds from natural products. J Pharm Biomed Anal 2019; 165:182-197. [DOI: 10.1016/j.jpba.2018.12.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 12/01/2018] [Accepted: 12/07/2018] [Indexed: 01/02/2023]
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4
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Zhao S, Wang S, Zhang S, Liu J, Dong Y. State of the art: Lateral flow assay (LFA) biosensor for on-site rapid detection. CHINESE CHEM LETT 2018. [DOI: 10.1016/j.cclet.2017.12.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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5
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Zhang C, Rodriguez E, Bi C, Zheng X, Suresh D, Suh K, Li Z, Elsebaei F, Hage DS. High performance affinity chromatography and related separation methods for the analysis of biological and pharmaceutical agents. Analyst 2018; 143:374-391. [PMID: 29200216 PMCID: PMC5768458 DOI: 10.1039/c7an01469d] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The last few decades have witnessed the development of many high-performance separation methods that use biologically related binding agents. The combination of HPLC with these binding agents results in a technique known as high performance affinity chromatography (HPAC). This review will discuss the general principles of HPAC and related techniques, with an emphasis on their use for the analysis of biological compounds and pharmaceutical agents. Various types of binding agents for these methods will be considered, including antibodies, immunoglobulin-binding proteins, aptamers, enzymes, lectins, transport proteins, lipids, and carbohydrates. Formats that will be discussed for these methods range from the direct detection of an analyte to indirect detection based on chromatographic immunoassays, as well as schemes based on analyte extraction or depletion, post-column detection, and multi-column systems. The use of biological agents in HPLC for chiral separations will also be considered, along with the use of HPAC as a tool to screen or study biological interactions. Various examples will be presented to illustrate these approaches and their applications in fields such as biochemistry, clinical chemistry, and pharmaceutical research.
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Affiliation(s)
- Chenhua Zhang
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588-0304, USA.
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6
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Yu X, Song H, Huang J, Chen Y, Dai M, Lin X, Xie Z. An aptamer@AuNP-modified POSS–polyethylenimine hybrid affinity monolith with a high aptamer coverage density for sensitive and selective recognition of ochratoxin A. J Mater Chem B 2018; 6:1965-1972. [DOI: 10.1039/c7tb03319b] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new POSS-based aptamer affinity hybrid monolith, Apt@AuNPs@POSS–PEI, with a well-controlled 3D skeletal structure and a high aptamer coverage density of up to 1413 pmol μL−1 has been facilely fabricated.
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Affiliation(s)
- Xia Yu
- Institute of Food Safety and Environment Monitoring
- Fuzhou University
- Fuzhou
- China
| | - Hongliang Song
- Institute of Food Safety and Environment Monitoring
- Fuzhou University
- Fuzhou
- China
| | - Jing Huang
- Institute of Food Safety and Environment Monitoring
- Fuzhou University
- Fuzhou
- China
| | - Yongxuan Chen
- Fujian Inspection and Research Institute for product quality
- Fuzhou
- China
| | - Ming Dai
- Fujian Inspection and Research Institute for product quality
- Fuzhou
- China
| | - Xucong Lin
- Institute of Food Safety and Environment Monitoring
- Fuzhou University
- Fuzhou
- China
| | - Zenghong Xie
- Institute of Food Safety and Environment Monitoring
- Fuzhou University
- Fuzhou
- China
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7
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Forier C, Boschetti E, Ouhammouch M, Cibiel A, Ducongé F, Nogré M, Tellier M, Bataille D, Bihoreau N, Santambien P, Chtourou S, Perret G. DNA aptamer affinity ligands for highly selective purification of human plasma-related proteins from multiple sources. J Chromatogr A 2017; 1489:39-50. [PMID: 28179082 DOI: 10.1016/j.chroma.2017.01.031] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 01/04/2017] [Accepted: 01/06/2017] [Indexed: 01/18/2023]
Abstract
Nucleic acid aptamers are promising ligands for analytical and preparative-scale affinity chromatography applications. However, a full industrial exploitation requires that aptamer-grafted chromatography media provide a number of high technical standards that remained largely untested. Ideally, they should exhibit relatively high binding capacity associated to a very high degree of specificity. In addition, they must be highly resistant to harsh cleaning/sanitization conditions, as well as to prolonged and repeated exposure to biological environment. Here, we present practical examples of aptamer affinity chromatography for the purification of three human therapeutic proteins from various sources: Factor VII, Factor H and Factor IX. In a single chromatographic step, three DNA aptamer ligands enabled the efficient purification of their target protein, with an unprecedented degree of selectivity (from 0.5% to 98% of purity in one step). Furthermore, these aptamers demonstrated a high stability under harsh sanitization conditions (100h soaking in 1M NaOH). These results pave the way toward a wider adoption of aptamer-based affinity ligands in the industrial-scale purification of not only plasma-derived proteins but also of any other protein in general.
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Affiliation(s)
| | | | | | | | - Frédéric Ducongé
- CEA, I2BM, MIRCen, UMR 9199, Université Paris Saclay, Fontenay aux Roses, France
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8
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Selective tools for the solid-phase extraction of Ochratoxin A from various complex samples: immunosorbents, oligosorbents, and molecularly imprinted polymers. Anal Bioanal Chem 2016; 408:6983-99. [PMID: 27585915 DOI: 10.1007/s00216-016-9886-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 06/21/2016] [Accepted: 08/16/2016] [Indexed: 12/27/2022]
Abstract
The evolution of instrumentation in terms of separation and detection has allowed a real improvement of the sensitivity and the analysis time. However, the analysis of ultra-traces of toxins such as ochratoxin A (OTA) from complex samples (foodstuffs, biological fluids…) still requires a step of purification and of preconcentration before chromatographic determination. In this context, extraction sorbents leading to a molecular recognition mechanism appear as powerful tools for the selective extraction of OTA and of its structural analogs in order to obtain more reliable and sensitive quantitative analyses of these compounds in complex media. Indeed, immunosorbents and oligosorbents that are based on the use of immobilized antibodies and of aptamers, respectively, and that are specific to OTA allow its selective clean-up from complex samples with high enrichment factors. Similar molecular recognition mechanisms can also be obtained by developing molecularly imprinted polymers, the synthesis of which leads to the formation of cavities that are specific to OTA, thus mimicking the recognition site of the biomolecules. Therefore, the principle, the advantages, the limits of these different types of extraction tools, and their complementary behaviors will be presented. The introduction of these selective tools in miniaturized devices will also be discussed.
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9
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Chen Y, Deng N, Wu C, Liang Y, Jiang B, Yang K, Liang Z, Zhang L, Zhang Y. Aptamer functionalized hydrophilic polymer monolith with gold nanoparticles modification for the sensitive detection of human α-thrombin. Talanta 2016; 154:555-9. [DOI: 10.1016/j.talanta.2016.02.054] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 02/18/2016] [Accepted: 02/23/2016] [Indexed: 12/15/2022]
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10
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Acquah C, Moy CKS, Danquah MK, Ongkudon CM. Development and characteristics of polymer monoliths for advanced LC bioscreening applications: A review. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1015-1016:121-134. [PMID: 26919447 DOI: 10.1016/j.jchromb.2016.02.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 02/13/2016] [Accepted: 02/13/2016] [Indexed: 01/05/2023]
Abstract
Biomedical research advances over the past two decades in bioseparation science and engineering have led to the development of new adsorbent systems called monoliths, mostly as stationary supports for liquid chromatography (LC) applications. They are acknowledged to offer better mass transfer hydrodynamics than their particulate counterparts. Also, their architectural and morphological traits can be tailored in situ to meet the hydrodynamic size of molecules which include proteins, pDNA, cells and viral targets. This has enabled their development for a plethora of enhanced bioscreening applications including biosensing, biomolecular purification, concentration and separation, achieved through the introduction of specific functional moieties or ligands (such as triethylamine, N,N-dimethyl-N-dodecylamine, antibodies, enzymes and aptamers) into the molecular architecture of monoliths. Notwithstanding, the application of monoliths presents major material and bioprocess challenges. The relationship between in-process polymerisation characteristics and the physicochemical properties of monolith is critical to optimise chromatographic performance. There is also a need to develop theoretical models for non-invasive analyses and predictions. This review article therefore discusses in-process analytical conditions, functionalisation chemistries and ligands relevant to establish the characteristics of monoliths in order to facilitate a wide range of enhanced bioscreening applications. It gives emphasis to the development of functional polymethacrylate monoliths for microfluidic and preparative scale bio-applications.
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Affiliation(s)
- Caleb Acquah
- Curtin Sarawak Research Institute, Curtin University, Sarawak 98009, Malaysia; Department of Chemical Engineering, Curtin University, Sarawak 98009, Malaysia
| | - Charles K S Moy
- Department of Civil Engineering, Xi'an Jiaotong-Liverpool University, Jiangsu 215123, China
| | - Michael K Danquah
- Curtin Sarawak Research Institute, Curtin University, Sarawak 98009, Malaysia; Department of Chemical Engineering, Curtin University, Sarawak 98009, Malaysia.
| | - Clarence M Ongkudon
- Biotechnology Research Institute, Universiti Malaysia Sabah, Kota Kinabalu, Sabah 88400, Malaysia
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11
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Du K, Yang M, Zhang Q, Dan S. Highly Porous Polymer Monolith Immobilized with Aptamer (RNA) Anchored Grafted Tentacles and Its Potential for the Purification of Lysozyme. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.5b02793] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Kaifeng Du
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Min Yang
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Qi Zhang
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Shunmin Dan
- Department of Pharmaceutical & Biological Engineering, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
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12
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Zhao JC, Zhu QY, Zhao LY, Lian HZ, Chen HY. Preparation of an aptamer based organic–inorganic hybrid monolithic column with gold nanoparticles as an intermediary for the enrichment of proteins. Analyst 2016; 141:4961-7. [DOI: 10.1039/c6an00957c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Gold nanoparticles are used as an intermediary in a sandwich structure for the preparation of an aptamer-based organic–inorganic hybrid affinity monolithic column.
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Affiliation(s)
- Jin-cheng Zhao
- State Key Laboratory of Analytical Chemistry for Life Science
- Collaborative Innovation Center of Chemistry for Life Sciences
- School of Chemistry & Chemical Engineering and Center of Materials Analysis
- Nanjing University
- Nanjing 210023
| | - Qing-yun Zhu
- State Key Laboratory of Analytical Chemistry for Life Science
- Collaborative Innovation Center of Chemistry for Life Sciences
- School of Chemistry & Chemical Engineering and Center of Materials Analysis
- Nanjing University
- Nanjing 210023
| | - Ling-yu Zhao
- State Key Laboratory of Analytical Chemistry for Life Science
- Collaborative Innovation Center of Chemistry for Life Sciences
- School of Chemistry & Chemical Engineering and Center of Materials Analysis
- Nanjing University
- Nanjing 210023
| | - Hong-zhen Lian
- State Key Laboratory of Analytical Chemistry for Life Science
- Collaborative Innovation Center of Chemistry for Life Sciences
- School of Chemistry & Chemical Engineering and Center of Materials Analysis
- Nanjing University
- Nanjing 210023
| | - Hong-yuan Chen
- State Key Laboratory of Analytical Chemistry for Life Science
- Collaborative Innovation Center of Chemistry for Life Sciences
- School of Chemistry & Chemical Engineering and Center of Materials Analysis
- Nanjing University
- Nanjing 210023
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13
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Jiang HP, Zhu JX, Peng C, Gao J, Zheng F, Xiao YX, Feng YQ, Yuan BF. Facile one-pot synthesis of a aptamer-based organic-silica hybrid monolithic capillary column by "thiol-ene" click chemistry for detection of enantiomers of chemotherapeutic anthracyclines. Analyst 2015; 139:4940-6. [PMID: 25072056 DOI: 10.1039/c4an00767k] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the current study, we developed a facile strategy for the one-pot synthesis of an aptamer-based organic-silica hybrid monolithic capillary column. A 5'-SH-modified aptamer, specifically targeting doxorubicin, was covalently modified in the hybrid silica monolithic column by a sol-gel method combined with "thiol-ene" click reaction. The prepared monolithic column had good stability and permeability, large specific surface, and showed excellent selectivity towards chemotherapeutic anthracyclines of doxorubicin and epirubicin. In addition, the enantiomers of doxorubicin and epirubicin can be easily separated by aptamer-based affinity monolithic capillary liquid chromatography. Furthermore, doxorubicin and epirubicin spiked in serum and urine were also successfully determined, which suggested that the complex biological matrix had a negligible effect on the detection of doxorubicin and epirubicin. Finally, we quantified the concentration of epirubicin in the serum of breast cancer patients treated with epirubicin by intravenous injection. The developed analytical method is cost-effective and rapid, and biological samples can be directly analyzed without any tedious sample pretreatment, which is extremely useful for monitoring medicines in serum and urine for pharmacokinetic studies.
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Affiliation(s)
- Han-Peng Jiang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan 430072, China.
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14
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Shcherbinin DS, Gnedenko OV, Khmeleva SA, Usanov SA, Gilep AA, Yantsevich AV, Shkel TV, Yushkevich IV, Radko SP, Ivanov AS, Veselovsky AV, Archakov AI. Computer-aided design of aptamers for cytochrome p450. J Struct Biol 2015; 191:112-9. [PMID: 26166326 DOI: 10.1016/j.jsb.2015.07.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 06/25/2015] [Accepted: 07/09/2015] [Indexed: 10/23/2022]
Abstract
Aptamers are short single-stranded DNA or RNA oligonucleotides that can bind to their targets with high affinity and specificity. Usually, they are experimentally selected using the SELEX method. Here, we describe an approach toward the in silico selection of aptamers for proteins. This approach involves three steps: finding a potential binding site, designing the recognition and structural parts of the aptamers and evaluating the experimental affinity. Using this approach, a set of 15-mer aptamers for cytochrome P450 51A1 was designed using docking and molecular dynamics simulation. An experimental evaluation of the synthesized aptamers using SPR biosensor showed that these aptamers interact with cytochrome P450 51A1 with Kd values in the range of 10(-6)-10(-7) M.
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Affiliation(s)
- Dmitrii S Shcherbinin
- Institute of Biomedical Chemistry RAMS, Pogodinskaya str., 10, Moscow 119121, Russia.
| | - Oksana V Gnedenko
- Institute of Biomedical Chemistry RAMS, Pogodinskaya str., 10, Moscow 119121, Russia
| | - Svetlana A Khmeleva
- Institute of Biomedical Chemistry RAMS, Pogodinskaya str., 10, Moscow 119121, Russia
| | - Sergey A Usanov
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich str., 5/2, Minsk 220141, Belarus
| | - Andrei A Gilep
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich str., 5/2, Minsk 220141, Belarus
| | - Aliaksei V Yantsevich
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich str., 5/2, Minsk 220141, Belarus
| | - Tatsiana V Shkel
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich str., 5/2, Minsk 220141, Belarus
| | - Ivan V Yushkevich
- Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus, Kuprevich str., 5/2, Minsk 220141, Belarus
| | - Sergey P Radko
- Institute of Biomedical Chemistry RAMS, Pogodinskaya str., 10, Moscow 119121, Russia
| | - Alexis S Ivanov
- Institute of Biomedical Chemistry RAMS, Pogodinskaya str., 10, Moscow 119121, Russia
| | | | - Alexander I Archakov
- Institute of Biomedical Chemistry RAMS, Pogodinskaya str., 10, Moscow 119121, Russia
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15
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Perret G, Santambien P, Boschetti E. The quest for affinity chromatography ligands: are the molecular libraries the right source? J Sep Sci 2015; 38:2559-72. [DOI: 10.1002/jssc.201500285] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 04/26/2015] [Accepted: 05/10/2015] [Indexed: 12/15/2022]
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16
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Yu J, Yang L, Liang X, Dong T, Liu H. Reversible regulation of thrombin adsorption and desorption based on photoresponsive-aptamer modified gold nanoparticles. Talanta 2015; 144:312-7. [PMID: 26452827 DOI: 10.1016/j.talanta.2015.06.053] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 06/11/2015] [Accepted: 06/20/2015] [Indexed: 10/23/2022]
Abstract
In the protein separation, adsorption and desorption of target protein have been using different buffer condition. Different buffer will change the structure and activity of target protein in some cases. This work describes the use of different wavelength light for remote regulation of adsorption and desorption of target protein in the same buffer solutions. A dynamic system that captured and released protein in response to light is reported. Matrix gold nanoparticles and light-responsive affinity ligand comprising thrombin aptamer (APT15), polyethylene glycol linker, and azobenzene-modified complementary sequence were used. UV light induced a trans-cis isomerization of the azobenzene that destabilized the duplex of aptamer and azobenzene-modified complementary sequence, resulting in thrombin binding to aptamer sequence. Visible light irradiation resulted in DNA duplex rehybridization and thrombin released. Our work demonstrates that different light wavelengths effectively regulated the adsorption and desorption of thrombin in the same buffer, and this system also can capture and release prothrombin from plasma with different wavelength light. Furthermore, this method can be widely applied to a variety of different protein separation process.
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Affiliation(s)
- Jiemiao Yu
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China; Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Liangrong Yang
- Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Xiangfeng Liang
- Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Tingting Dong
- Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Huizhou Liu
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China; Key Laboratory of Green Process and Engineering, State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
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17
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Aptamer-based organic-silica hybrid affinity monolith prepared via “thiol-ene” click reaction for extraction of thrombin. Talanta 2015; 138:52-58. [DOI: 10.1016/j.talanta.2015.02.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 01/31/2015] [Accepted: 02/04/2015] [Indexed: 12/27/2022]
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18
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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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19
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Brothier F, Pichon V. Miniaturized DNA aptamer-based monolithic sorbent for selective extraction of a target analyte coupled on-line to nanoLC. Anal Bioanal Chem 2014; 406:7875-86. [PMID: 25335821 DOI: 10.1007/s00216-014-8256-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 10/01/2014] [Accepted: 10/08/2014] [Indexed: 10/24/2022]
Abstract
A complete characterization of a novel target-specific DNA aptamer-based miniaturized solid phase extraction (SPE)-sorbent coupled on-line to nanoLC is presented. A miniaturized oligosorbent (mOS) was prepared via the in situ sol-gel synthesis of a hybrid organic-inorganic monolith in 100 μm i.d. capillary columns using tetraethoxysilane and 3-aminopropyltriethoxysilane as precursors, followed by covalent binding of a 5'-amino-modified DNA aptamer with a C12 spacer arm specific for a molecule of small molecular weight. Ochratoxin A (OTA), one of the most abundant naturally occurring mycotoxins, was chosen as model analyte to demonstrate the principle of such an approach. The mOS was coupled on-line to RP-nanoLC-LIF. Selective extraction of OTA on several mOSs was demonstrated with an average extraction recovery above 80 % when percolating spiked binding buffer and a low recovery on control monoliths grafted with a non-specific aptamer. Reproducibility of mOSs preparation was highlighted by comparing extraction yields. Otherwise, the mOSs demonstrated no cross-reactivity towards an OTA structural analogue, i.e., ochratoxin B. Due to the high specific surface area of the hybrid silica-based monolith, the coverage density of DNA aptamers covalently immobilized in the capillaries was very high and reached 6.27 nmol μL(-1), thus leading to a capacity above 5 ng of OTA. This miniaturized device was then applied to the selective extraction of OTA from beer samples. It revealed to be effective in isolating OTA from this complex matrix, thus improving the reliability of its analysis at the trace level.
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Affiliation(s)
- Fabien Brothier
- Department of Analytical, Bioanalytical Sciences and Miniaturization (LSABM)-UMR CBI 8231 (CNRS-ESPCI), ESPCI ParisTech, PSL Research University, 10 rue Vauquelin, 75231, Paris Cedex 05, France
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20
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Aptamer-based-sorbents for sample treatment--a review. Anal Bioanal Chem 2014; 407:681-98. [PMID: 25286873 DOI: 10.1007/s00216-014-8129-5] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Revised: 08/20/2014] [Accepted: 08/21/2014] [Indexed: 10/24/2022]
Abstract
To improve selectivity during sample pretreatment, various selective tools inducing a molecular recognition mechanism during the extraction procedure have been developed, such as sorbents constituted of immobilized antibodies, i.e., immunosorbents, or molecularly imprinted polymers. More recently, as an alternative to both previous approaches, aptamers immobilized onto a solid support, i.e., oligosorbents, were proposed. Thanks to the high affinity and high selectivity of the interaction that some aptamers offer toward some target analytes, they also provide powerful techniques that make selective extraction and the concentration of a target analyte from liquid matrices in one step or sample purification of extracts from solid matrices possible. This review describes the development and the properties of these oligosorbents developed for different types of targets-pharmaceuticals, mycotoxins, proteins, cells, etc. After describing the immobilization procedures, we discuss different parameters characterizing the potential of aptamer-based supports as extraction sorbents. Close relations exist between extraction recoveries and the affinity and amounts of aptamers immobilized on the extraction device. In addition, analyte-aptamer interactions may be affected by matrix components and by additives in the samples. This may also lower extraction recoveries and affect the stability and the possible reusability of the aptamer-based sorbent. All these points are discussed and illustrated. Numerous examples of applications of these sorbents to the treatment of complex samples such as food samples, environmental samples, and biological fluids are also reported. Their association with analytical devices, from conventional to miniaturized analytical systems, is also discussed.
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21
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Lee SJ, Adler B, Ekström S, Rezeli M, Végvári Á, Park JW, Malm J, Laurell T. Aptamer/ISET-MS: a new affinity-based MALDI technique for improved detection of biomarkers. Anal Chem 2014; 86:7627-34. [PMID: 25001319 DOI: 10.1021/ac501488b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
With the rapid progress in the development of new clinical biomarkers there is an unmet need of fast and sensitive multiplex analysis methods for disease specific protein monitoring. Immunoaffinity extraction integrated with matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) analysis offers a route to rapid and sensitive protein analysis and potentially multiplex biomarker analysis. In this study, the previously reported integrated selective enrichment target (ISET)-MALDI-MS analysis was implemented with ssDNA aptamer functionalized microbeads to address the specific capturing of thrombin in complex samples. The main objective for using an aptamer as the capturing ligand was to avoid the inherently high background components, which are produced during the digestion step following the target extraction when antibodies are used. By applying a thrombin specific aptamer linked to ISET-MALDI-MS detection, a proof of concept of antibody fragment background reduction in the ISET-MALDI-MS readout is presented. Detection sensitivity was significantly increased compared to the corresponding system based on antibody-specific binding as the aptamer ligand does not induce any interfering background residues from the antibodies. The limit of detection for thrombin was 10 fmol in buffer using the aptamer/ISET-MALDI-MS configuration as confirmed by MS/MS fragmentation. The aptamer/ISET-MALDI-MS platform also displayed a limit of detection of 10 fmol for thrombin in five different human serum samples (1/10 diluted), demonstrating the applicability of the aptamer/ISET-MALDI-MS analysis in clinical samples.
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Affiliation(s)
- Su Jin Lee
- Department of Biomedical Engineering, Lund University , P.O. Box 118, SE-211 00 Lund, Sweden
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22
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Radom F, Jurek PM, Mazurek MP, Otlewski J, Jeleń F. Aptamers: molecules of great potential. Biotechnol Adv 2013; 31:1260-74. [PMID: 23632375 DOI: 10.1016/j.biotechadv.2013.04.007] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2012] [Revised: 03/27/2013] [Accepted: 04/19/2013] [Indexed: 01/08/2023]
Abstract
Aptamers emerged over 20 years ago as a class of nucleic acids able to recognize specific targets. Today, aptamer-related studies constitute a large and important field of biotechnology. Functional oligonucleotides have proved to be a versatile tool in biomedical research due to the ease of synthesis, a wide range of potentially recognized molecular targets and the simplicity of selection. Similarly to antibodies, aptamers can be used to detect or isolate specific molecules, as well as to act as targeting and therapeutic agents. In this review we present different approaches to aptamer application in nanobiotechnology, diagnostics and medicine.
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Affiliation(s)
- Filip Radom
- Department of Protein Engineering, Faculty of Biotechnology, University of Wroclaw, Tamka 2, 50-137 Wroclaw, Poland
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23
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Gao C, Sun X, Woolley AT. Fluorescent measurement of affinity binding between thrombin and its aptamers using on-chip affinity monoliths. J Chromatogr A 2013; 1291:92-6. [PMID: 23587316 DOI: 10.1016/j.chroma.2013.03.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 03/24/2013] [Accepted: 03/25/2013] [Indexed: 10/27/2022]
Abstract
A microfluidic chip with integrated 2mm long monoliths incorporated with poly(ethylene glycol) (PEG) groups was developed for thrombin-aptamer interaction study. The non-G quartet forming oligonucleotide coated monoliths was compared to a 15 mer thrombin-binding aptamer, in which affinity binding and elution processes were real-time monitored fluorescently. The results showed that the fluorescence intensity of aptamer stationary phase is approximately 10 times higher than that of the control column, which is probably due to the successful suppression of nonspecific adsorption between thrombin and aptamers/monoliths by using PEG-monolith. The experiment was repeated using human serum albumin (HSA) and green fluorescence protein (GFP) as interferences, it was double confirmed that thrombin was selectively retained by PEG-monolith. An elution efficiency of 75% was achieved with an elute of 200mM acetic acid and 2M NaCI, and the eluted thrombin was successfully separated in an ionic buffer system of 20mM NaHCO3 (pH 9.5) with 3% PEG. The hydrophilic and antifouling properties of PEG-monolith greatly decrease nonspecific adsorption and enhance detection sensitivity, which provided an alternative method to perform on-chip fluorescent measurement of bioaffinity binding.
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Affiliation(s)
- Changlu Gao
- School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Shandong 264209, China
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24
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Šmuc T, Ahn IY, Ulrich H. Nucleic acid aptamers as high affinity ligands in biotechnology and biosensorics. J Pharm Biomed Anal 2013; 81-82:210-7. [PMID: 23666257 DOI: 10.1016/j.jpba.2013.03.014] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2013] [Revised: 03/11/2013] [Accepted: 03/20/2013] [Indexed: 02/07/2023]
Abstract
Aptamers are small nucleic acid molecules capable of binding to a wide range of target molecules with high affinity and specificity. They have been developed and widely used not only as research tools, but also as biosensors, specific antagonists, and diagnostic markers and as protein purification platform for many pharmaceutical and clinical applications. Here, in this paper we will explore biochemical aspects of aptamer-target interactions and show why aptamers rival antibodies in target recognition and purification procedures. This review will focus on strategies of using aptamers as affinity ligands for molecules of therapeutic and pharmaceutical interest including applications in chromatography and capillary electrophoresis for protein and small molecule purification. Moreover, we will also discuss aptamers whose binding parameters can be controlled on demand for diagnostic approaches and used as sensitive receptors in biosensorics. Aptamers have opened up exciting fields in basic and applied research of pharmaceutical and biotechnological interest.
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Affiliation(s)
- Tina Šmuc
- Laboratory for Bio-instrumentation, Centre of Excellence for Biosensors, Instrumentation and Process Control, Velika pot 22, 5250 Solkan, Slovenia
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25
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Deng N, Liang Z, Liang Y, Sui Z, Zhang L, Wu Q, Yang K, Zhang L, Zhang Y. Aptamer Modified Organic–Inorganic Hybrid Silica Monolithic Capillary Columns for Highly Selective Recognition of Thrombin. Anal Chem 2012; 84:10186-90. [DOI: 10.1021/ac302779u] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Nan Deng
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of the Chinese Academy of Sciences, Beijing 100039, China
| | - Zhen Liang
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yu Liang
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Zhigang Sui
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Liyuan Zhang
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of the Chinese Academy of Sciences, Beijing 100039, China
| | - Qi Wu
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of the Chinese Academy of Sciences, Beijing 100039, China
| | - Kaiguang Yang
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Lihua Zhang
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yukui Zhang
- Key Laboratory of Separation
Science for Analytical Chemistry, National Chromatographic Research
and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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Gerasimov JY, Schaefer CS, Yang W, Grout RL, Lai RY. Development of an electrochemical insulin sensor based on the insulin-linked polymorphic region. Biosens Bioelectron 2012. [PMID: 23202332 DOI: 10.1016/j.bios.2012.10.046] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Here we report the design and fabrication of an electrochemical aptamer-based (E-AB) sensor for detection of insulin. The aptamer used in this study is the insulin-linked polymorphic region (ILPR) sequence, a G-rich sequence that presumably undergoes ligand-induced folding to form a G-quadruplex in presence of insulin. Our circular dichroism data, however, suggests that the ILPR sequence, even in absence of the target, is predominantly in a G-quadruplex-like form. Insulin binding, however, has shown to further induce the formation of the G-quadruplex. To evaluate the potential of the ILPR sequence as a biosensing element, we constructed two E-AB insulin sensors that are identical in all aspects but the location of the methylene blue (MB) redox label. We find that the sensor fabricated with internal MB-modified probes (In-IT) shows enhanced sensing behavior when compared to one fabricated using terminal-MB modified probes (In1). The improvements observed with the In-IT sensor could be attributed to the more effective obstruction of electron transfer upon insulin binding. Overall, both sensors perform well, affording a detection limit of 10 nM and 50 nM for the In-IT and In1 sensors, respectively.
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Affiliation(s)
- Jennifer Y Gerasimov
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
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28
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Tippkötter N, Al-Kaidy H, Wollny S, Ulber R. Functionalized Magnetizable Particles for Downstream Processing in Single-Use Systems. CHEM-ING-TECH 2012. [DOI: 10.1002/cite.201200130] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Han B, Zhao C, Yin J, Wang H. High performance aptamer affinity chromatography for single-step selective extraction and screening of basic protein lysozyme. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 903:112-7. [PMID: 22841745 DOI: 10.1016/j.jchromb.2012.07.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2012] [Revised: 07/04/2012] [Accepted: 07/11/2012] [Indexed: 12/24/2022]
Abstract
A DNA aptamer based high-performance affinity chromatography is developed for selective extraction and screening of a basic protein lysozyme. First, a poly(glycidyl methacrylate-co-ethylene dimethacrylate) monolithic column was synthesized in situ by thermally initiated radical polymerization, and then an anti-lysozyme DNA aptamer was covalently immobilized on the surface of the monolith through a 16-atom spacer arm. The target protein lysozyme but non-target proteins can be trapped by the immobilized anti-lysozyme DNA aptamer. In contrast, lysozyme cannot be trapped by the immobilized oligodeoxynucleotide that does not contain the sequence of the anti-lysozyme DNA aptamer. The study clearly demonstrates the trapping of lysozyme by the immobilized anti-lysozyme DNA aptamer is mainly due to specific recognition rather than simple electrostatic interaction of positively charged protein and the negatively charged DNA. The inter-day precision was determined as 0.8% for migration time and 4.2% for peak area, respectively. By the use of aptamer affinity monolith, a screening strategy is developed to selectively extract lysozyme from chicken egg white, showing the advantages of high efficiency, low cost and ease-of-operation.
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Affiliation(s)
- Bin Han
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100086, PR China
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30
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Walter JG, Stahl F, Scheper T. Aptamers as affinity ligands for downstream processing. Eng Life Sci 2012. [DOI: 10.1002/elsc.201100197] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Johanna-Gabriela Walter
- Institut für Technische Chemie; Leibniz Universität Hannover; Callinstr. 3; 30167; Hannover; Germany
| | - Frank Stahl
- Institut für Technische Chemie; Leibniz Universität Hannover; Callinstr. 3; 30167; Hannover; Germany
| | - Thomas Scheper
- Institut für Technische Chemie; Leibniz Universität Hannover; Callinstr. 3; 30167; Hannover; Germany
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31
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Kökpinar Ö, Walter JG, Shoham Y, Stahl F, Scheper T. Aptamer-based downstream processing of his-tagged proteins utilizing magnetic beads. Biotechnol Bioeng 2011; 108:2371-9. [PMID: 21538335 DOI: 10.1002/bit.23191] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2010] [Revised: 03/28/2011] [Accepted: 04/22/2011] [Indexed: 11/10/2022]
Abstract
Aptamers are synthetic nucleic acid-based high affinity ligands that are able to capture their corresponding target via molecular recognition. Here, aptamer-based affinity purification for His-tagged proteins was developed. Two different aptamers directed against the His-tag were immobilized on magnetic beads covalently. The resulting aptamer-modified magnetic beads were characterized and successfully applied for purification of different His-tagged proteins from complex E. coli cell lysates. Purification effects comparable to conventional immobilized metal affinity chromatography were achieved in one single purification step. Moreover, we have investigated the possibility to regenerate and reuse the aptamer-modified magnetic beads and have shown their long-term stability over a period of 6 months.
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Affiliation(s)
- Öznur Kökpinar
- Institut für Technische Chemie, Leibniz Universität Hannover, Callinstrasse 5, 30167 Hannover, Germany; telephone: +49-511-762-2968; fax: +49-511-762-3004
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32
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Jing M, Bowser MT. Methods for measuring aptamer-protein equilibria: a review. Anal Chim Acta 2011; 686:9-18. [PMID: 21237304 PMCID: PMC3026478 DOI: 10.1016/j.aca.2010.10.032] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Revised: 10/20/2010] [Accepted: 10/21/2010] [Indexed: 12/11/2022]
Abstract
Aptamers are single stranded DNA or RNA molecules that have been selected using in vitro techniques to bind target molecules with high affinity and selectivity, rivaling antibodies in many ways. In order to use aptamers in research and clinical applications, a thorough understanding of aptamer-target binding is necessary. In this article, we review methods for assessing aptamer-protein binding using separation based techniques such as dialysis, ultrafiltration, gel and capillary electrophoresis, and HPLC; as well as mixture based techniques such as fluorescence intensity and anisotropy, UV-vis absorption and circular dichroism, surface plasmon resonance, and isothermal titration calorimetry. For each method the principle, range of application and important features, such as sample consumption, experimental time and complexity, are summarized and compared.
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Affiliation(s)
- Meng Jing
- University of Minnesota, Department of Chemistry, 207 Pleasant St. SE, Minneapolis, MN 55455-0431, USA
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Wang J, Zhang Y, Okamoto Y, Kaji N, Tokeshi M, Baba Y. Online transient isotachophoresis concentration by the pseudo-terminating electrolyte buffer for the separation of DNA-aptamer and its thrombin complex in poly(methyl methacrylate) microchip. Analyst 2011; 136:1142-7. [PMID: 21270992 DOI: 10.1039/c0an00434k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Online automatic transient isotachophoresis concentration of DNA-aptamer and its thrombin complex by using one kind of pseudo-terminating electrolyte buffer in a cross-channel poly(methyl methacrylate) microchip is reported. Sample injection, transient concentration and separation were done continuously and controlled by a sequential voltage switching program, time-consuming steps and complicated chip design were not required. Peak resolution between DNA-aptamer and its thrombin complex was influenced by this novel pseudo-terminating electrolyte buffer, which was prepared by the addition of chemical component with slow mobility into the same buffer as leading electrolyte buffer. 1100-fold signal enhancement of thrombin complex was achieved by this transient isotachophoresis on a standard cross-form microchip. The concentration effect or standing time of transient isotachophoresis was proved to be influenced by the concentration of leading electrolyte ion and the concentration of pseudo-terminating electrolyte buffer ion (glycine). The transient concentration was followed by on-chip nondenaturing gel electrophoresis in methylcellulose solution for the size-based separation. The detection limit, taken as the lowest thrombin concentration at threefold S/N, was determined to be 0.5 amol in mass by this method.
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Affiliation(s)
- Jun Wang
- Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Nagoya, Japan.
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34
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Kim JH, Hwang ET, Kang KK, Tatavarty R, Gu MB. Aptamers-on-nanofiber as a novel hybrid capturing moiety. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm13558a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Potty ASR, Kourentzi K, Fang H, Schuck P, Willson RC. Biophysical characterization of DNA and RNA aptamer interactions with hen egg lysozyme. Int J Biol Macromol 2010; 48:392-7. [PMID: 21167858 DOI: 10.1016/j.ijbiomac.2010.12.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2010] [Revised: 12/03/2010] [Accepted: 12/08/2010] [Indexed: 01/24/2023]
Abstract
This work characterized the binding of an RNA aptamer recognizing hen egg white lysozyme, as well as a literature-reported single-stranded DNA analog of sequence identical to the original RNA aptamer, using fluorescence anisotropy, isothermal titration calorimetry (ITC) and analytical ultracentrifugation. The polyanionic DNA aptamer analog is selective for lysozyme even over cationic cytochrome c and has been reported to be successfully used in biosensing applications. The association however, is predominantly of electrostatic character, strongly salt-sensitive and entropically-driven, in contrast to previously described enthalpically-driven antibody-lysozyme and DNA aptamer-VEGF interactions. With a moderate selectivity for their target, high salt-sensitivity along with fast association and dissociation behavior, these molecules might serve as pseudo-affinity ligands for biomolecular separations.
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Affiliation(s)
- Ajish S R Potty
- Department of Chemical & Biomolecular Engineering, University of Houston, 4800 Calhoun Rd, Houston, TX 77204-4004, USA
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36
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Kim YS, Hyun CJ, Kim IA, Gu MB. Isolation and characterization of enantioselective DNA aptamers for ibuprofen. Bioorg Med Chem 2010; 18:3467-73. [PMID: 20456958 DOI: 10.1016/j.bmc.2010.03.074] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Revised: 03/26/2010] [Accepted: 03/27/2010] [Indexed: 01/22/2023]
Abstract
Single stranded DNA aptamers that can bind to ibuprofen, a widely used anti-inflammation drug, were selected from random DNA library of 10(15) nucleotides by FluMag-SELEX process. Five different sequences were selected and their enantioselectivity and affinity were characterized. Three out of five aptamer candidates did not show any affinity to (S)-ibuprofen, but only to racemic form of ibuprofen, suggesting that they are (R)-ibuprofen specific aptamers. Another two aptamer candidates showed affinity to both racemic form and (S)-ibuprofen, which were considered as (S)-ibuprofen specific aptamers. The affinity of five ssDNA aptamers isolated was in a range of 1.5-5.2microM. In addition, all of these five aptamers did not show any affinity to analogues of ibuprofen in its profen's group (fenoprofen, flubiprofen, and naproxen) and the antibiotics of oxytetracycline, another control.
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Affiliation(s)
- Yeon Seok Kim
- School of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-Gu, Seoul 136-701, South Korea
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37
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Xiao J, Carter JA, Frederick KA, McGown LB. A genome-inspired DNA ligand for the affinity capture of insulin and insulin-like growth factor-2. J Sep Sci 2009; 32:1654-64. [PMID: 19391177 PMCID: PMC2774777 DOI: 10.1002/jssc.200900060] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The insulin-linked polymorphic region (ILPR) of the human insulin gene contains tandem repeats of similar G-rich sequences, some of which form intramolecular G-quadruplex structures in vitro. Previous work showed affinity binding of insulin to an intramolecular G-quadruplex formed by ILPR variant a. Here, we report on interactions of insulin and the highly homologous insulin-like growth factor-2 (IGF-2) with ILPR variants a, h, and i. Circular dichroism indicated intramolecular G-quadruplex formation for variants a and h. Affinity MALDI MS and surface plasmon resonance were used to compare protein capture and binding strengths. Insulin and IGF-2 exhibited high binding affinity for variants a and h but not i, indicating the involvement of intramolecular G-quadruplexes. Interaction between insulin and variant a was unique in the appearance of two binding interactions with K(D) approximately 10(-13) M and K(D) approximately 10(-7) M, which was not observed for insulin with variant h (K(D) approximately 10(-8) M) or IGF-2 with either variant (K(D)s approximately 10(-9) M). The results provide a basis for the design of DNA binding ligands for insulin and IGF-2 and support a new approach to discovery of DNA affinity binding ligands based on genome-inspired sequences rather than the traditional combinatorial selection route to aptamer discovery.
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Affiliation(s)
- Junfeng Xiao
- Department of Chemistry and Chemical Biology 118 Cogswell Laboratory Rensselaer Polytechnic Institute Troy, NY 12180
| | - Jennifer A. Carter
- Department of Chemistry and Chemical Biology 118 Cogswell Laboratory Rensselaer Polytechnic Institute Troy, NY 12180
| | - Kimberley A. Frederick
- Department of Chemistry and Chemical Biology 118 Cogswell Laboratory Rensselaer Polytechnic Institute Troy, NY 12180
| | - Linda B. McGown
- Department of Chemistry and Chemical Biology 118 Cogswell Laboratory Rensselaer Polytechnic Institute Troy, NY 12180
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38
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Zhao Q, Li XF, Shao Y, Le XC. Aptamer-based affinity chromatographic assays for thrombin. Anal Chem 2008; 80:7586-93. [PMID: 18759461 DOI: 10.1021/ac801206s] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Affinity chromatographic assays for thrombin were developed using two aptamers as affinity ligands. The efficient capture and step elution of thrombin with NaClO4 enabled the determination of thrombin by using either absorbance or fluorescence detection. Preconcentration of thrombin on the affinity column improved the detection limit of thrombin to 0.1 nM. Using an aptamer for the fibrinogen-binding site of thrombin and a second aptamer for the heparin-binding site, a sandwich chromatographic assay was developed, showing improved selectivity of thrombin detection and eliminating the need for labeling thrombin in the sample. The increased local concentration of aptamers immobilized on monolithic columns favored the formation of aptamer-thrombin complexes, resulting in improved retention and detection of thrombin at trace levels.
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Affiliation(s)
- Qiang Zhao
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada T6G 2G3
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Guzman NA, Blanc T, Phillips TM. Immunoaffinity capillary electrophoresis as a powerful strategy for the quantification of low-abundance biomarkers, drugs, and metabolites in biological matrices. Electrophoresis 2008; 29:3259-78. [PMID: 18646282 PMCID: PMC2659498 DOI: 10.1002/elps.200800058] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
In the last few years, there has been a greater appreciation by the scientific community of how separation science has contributed to the advancement of biomedical research. Despite past contributions in facilitating several biomedical breakthroughs, separation sciences still urgently need the development of improved methods for the separation and detection of biological and chemical substances. In particular, the challenging task of quantifying small molecules and biomolecules, found in low abundance in complex matrices (e.g., serum), is a particular area in need of new high-efficiency techniques. The tandem or on-line coupling of highly selective antibody capture agents with the high-resolving power of CE is being recognized as a powerful analytical tool for the enrichment and quantification of ultra-low abundance analytes in complex matrices. This development will have a significant impact on the identification and characterization of many putative biomarkers and on biomedical research in general. Immunoaffinity CE (IACE) technology is rapidly emerging as the most promising method for the analysis of low-abundance biomarkers; its power comes from a three-step procedure: (i) bioselective adsorption and (ii) subsequent recovery of compounds from an immobilized affinity ligand followed by (iii) separation of the enriched compounds. This technology is highly suited to automation and can be engineered to as a multiplex instrument capable of routinely performing hundreds of assays per day. Furthermore, a significant enhancement in sensitivity can be achieved for the purified and enriched affinity targeted analytes. Thus, a compound that exists in a complex biological matrix at a concentration far below its LOD is easily brought to well within its range of quantification. The present review summarizes several applications of IACE, as well as a chronological description of the improvements made in the fabrication of the analyte concentrator-microreactor device leading to the development of a multidimensional biomarker analyzer.
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Affiliation(s)
- Norberto A Guzman
- Biomarker Laboratory, Princeton Biochemicals, Inc., Princeton, NJ 08543, USA.
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Behavior of serine proteases thrombin, trypsin, and chymotrypsin under conditions of MALDI-TOF-Mass spectrometry. THEOR EXP CHEM+ 2008. [DOI: 10.1007/s11237-008-9016-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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41
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Zhao Q, Li XF, Le XC. Aptamer-modified monolithic capillary chromatography for protein separation and detection. Anal Chem 2008; 80:3915-20. [PMID: 18363332 DOI: 10.1021/ac702567x] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A capillary chromatography technique was developed for the separation and detection of proteins, taking advantage of the specific affinity of aptamers and the porous property of the monolith. A biotinylated DNA aptamer targeting cytochrome c was successfully immobilized on a streptavidin-modified polymer monolithic capillary column. The aptamer, having a G-quartet structure, could bind to both cytochrome c and thrombin, enabling the separation of these proteins from each other and from the unretained proteins. Elution of strongly bound proteins was achieved by increasing the ionic strength of the mobile phase. The following proteins were tested using the aptamer affinity monolithic columns: human immunoglobulin G (IgG), hemoglobin, transferrin, human serum albumin, cytochrome c, and thrombin. Determination of cytochrome c and thrombin spiked into dilute serum samples showed no interference from the serum matrix. The benefit of porous properties of the affinity monolithic column was demonstrated by selective capture and preconcentration of thrombin at low ionic strength and subsequent rapid elution at high ionic strength. The combination of the polymer monolithic column and the aptamer affinities makes the aptamer-modified monolithic columns useful for protein detection and separation.
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Affiliation(s)
- Qiang Zhao
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, AB, Canada T6G 2G3
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Giraudi G, Anfossi L, Baggiani C, Giovannoli C, Tozzi C. Solid-phase extraction of ochratoxin A from wine based on a binding hexapeptide prepared by combinatorial synthesis. J Chromatogr A 2007; 1175:174-80. [DOI: 10.1016/j.chroma.2007.10.057] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2007] [Revised: 10/18/2007] [Accepted: 10/22/2007] [Indexed: 11/17/2022]
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43
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Tang Q, Su X, Loh KP. Surface plasmon resonance spectroscopy study of interfacial binding of thrombin to antithrombin DNA aptamers. J Colloid Interface Sci 2007; 315:99-106. [PMID: 17689549 DOI: 10.1016/j.jcis.2007.06.040] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Revised: 06/20/2007] [Accepted: 06/21/2007] [Indexed: 11/16/2022]
Abstract
We have applied surface plasmon resonance (SPR) spectroscopy, in combination with one-step direct binding, competition, and sandwiched assay schemes, to study thrombin binding to its DNA aptamers, with the aim to further the understanding of their interfacial binding characteristics. Using a 15-mer aptamer that binds thrombin primarily at the fibrinogen-recognition exosite as a model, we have demonstrated that introducing a DNA spacer in the aptamer enhances thrombin-binding capacity and stability, as similarly reported for hydrocarbon linkers. The bindings are aptamer surface coverage and salt concentration dependent. When free aptamers or DNA sequences complementary to the immobilized aptamer are applied after the formation of thrombin/aptamer complexes, bound thrombin is displaced to a certain extent, depending on the stability of the complexes formed under different conditions. When the 29-mer aptamer (specific to thrombin's heparin-binding exosite) is immobilized on the surface, its affinity to thrombin appears to be lower than the immobilized 15-mer aptamer, although the 29-mer aptamer is known to have a higher affinity in the solution phase. These findings underline the importance of aptamers' ability to fold into intermolecular structures and their accessibility for target capture. Using a sandwiched assay scheme followed by an additional signaling step involving biotin-streptavidin chemistry, we have observed the simultaneous binding of the 15- and 29-mer aptamers to thrombin protein at different exosites and have found that one aptamer depletes thrombin's affinity to the other when they bind together. We believe that these findings are invaluable for developing DNA aptamer-based biochips and biosensors.
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Affiliation(s)
- Qianjun Tang
- Department of Chemistry, National University of Singapore, 3 Science Drive, 117543 Singapore
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Stoltenburg R, Reinemann C, Strehlitz B. SELEX--a (r)evolutionary method to generate high-affinity nucleic acid ligands. ACTA ACUST UNITED AC 2007; 24:381-403. [PMID: 17627883 DOI: 10.1016/j.bioeng.2007.06.001] [Citation(s) in RCA: 937] [Impact Index Per Article: 55.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2007] [Revised: 05/31/2007] [Accepted: 06/01/2007] [Indexed: 02/07/2023]
Abstract
SELEX stands for systematic evolution of ligands by exponential enrichment. This method, described primarily in 1990 [Ellington, A.D., Szostak, J.W., 1990. In vitro selection of RNA molecules that bind specific ligands. Nature 346, 818-822; Tuerk, C., Gold, L., 1990. Systematic evolution of ligands by exponential enrichment: RNA ligands to bacteriophage T4 DNA polymerase. Science 249, 505-510] aims at the development of aptamers, which are oligonucleotides (RNA or ssDNA) binding to their target with high selectivity and sensitivity because of their three-dimensional shape. Aptamers are all new ligands with a high affinity for considerably differing molecules ranging from large targets as proteins over peptides, complex molecules to drugs and organic small molecules or even metal ions. Aptamers are widely used, including medical and pharmaceutical basic research, drug development, diagnosis, and therapy. Analytical and separation tools bearing aptamers as molecular recognition and binding elements are another big field of application. Moreover, aptamers are used for the investigation of binding phenomena in proteomics. The SELEX method was modified over the years in different ways to become more efficient and less time consuming, to reach higher affinities of the aptamers selected and for automation of the process. This review is focused on the development of aptamers by use of SELEX and gives an overview about technologies, advantages, limitations, and applications of aptamers.
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Affiliation(s)
- Regina Stoltenburg
- UFZ, Helmholtz Centre for Environmental Research - UFZ, Permoserstr. 15, 04318 Leipzig, Germany
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45
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Su X, Hu L, Kong L, Lei X, Zou H. Affinity chromatography with immobilized DNA stationary phase for biological fingerprinting analysis of traditional Chinese medicines. J Chromatogr A 2007; 1154:132-7. [PMID: 17451725 DOI: 10.1016/j.chroma.2007.03.050] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2007] [Accepted: 03/14/2007] [Indexed: 10/23/2022]
Abstract
A stationary phase for high performance affinity chromatography with immobilization of DNA onto silica gel was prepared and characterized. The effect of the ionic strength, concentration of Mg2+, EDTA and CH3CN in the mobile phase on the retention of alkaloids were investigated. With this stationary phase, biological fingerprinting analysis of traditional Chinese medicines (TCMs) Coptis chinensis Franch and Rheum palmatum L. was performed with both one-dimensional (1-D) and two-dimensional (2-D) chromatography. The 1-D chromatography was performed with isocratic and gradient elution and 2-D chromatography was developed with immobilized DNA column combined with silica monolithic ODS column. It was found that 7 compounds in Coptis chinensis Franch including berberine, palmatine and jatrorrhizine, 14 compounds in Rheum palmatum L. including aloe-emodin, rhein, emodin, chrysophannol-8-O-glucophranoside and physionl-8-O-glucophranoside were active in binding to the immobilized DNA.
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Affiliation(s)
- Xingye Su
- National Chromatographic R.&A. Centre, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
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46
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Szilagyi A, Bonn GK, Guttman A. Capillary gel electrophoresis analysis of G-quartet forming oligonucleotides used in DNA-protein interaction studies. J Chromatogr A 2007; 1161:15-21. [PMID: 17391683 DOI: 10.1016/j.chroma.2007.03.015] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2006] [Revised: 02/28/2007] [Accepted: 03/05/2007] [Indexed: 10/23/2022]
Abstract
DNA-protein binding is among the most frequently studied biomolecular interactions with high importance in modern systems biology research. One interesting aspect of this rapidly developing field is the affinity capture of proteins by G-quartet forming oligonucleotides also referred to as aptamers. G-quartets are structural motifs formed by guanine-rich sequences commonly occurring in the human genome. In this paper, we describe a capillary gel electrophoresis based method to validate G-quartet formation of in-house designed oligonucleotides and discuss the effect of monovalent cation concentration on the development of this structure. The relevant aptamer was then bound to magnetic beads to form an affinity capture surface for target proteins, which were then analyzed by matrix-assisted laser desorption/ionization mass spectrometry.
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Affiliation(s)
- Agnes Szilagyi
- Horváth Laboratory of Bioseparation Sciences, Institute of Analytical Chemistry and Radiochemistry, Leopold-Franzens University, Innrain 66, A-6020 Innsbruck, Austria
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47
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Abstract
This review article is aimed at assessing the recent progress made in affinity nano-LC and affinity CEC performed in capillaries and microchips. A variety of biospecific interactions is covered including lectin affinity, immunoaffinity, immobilized metal affinity, sugar-based affinity, protein A affinity, protein G affinity, aptamer affinity, enzyme affinity, and other miscellanea. ACE involving affinity interaction in free solution is not covered in this review article. Also, affinity-based separations involving chiral recognition are not the subject of this review article because they are the topic of a more specialized review article on chiral separations in this special issue. A total of 31 papers published in the period 1998-2006 have been discussed in this review article.
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Affiliation(s)
- Fred M Okanda
- Department of Chemistry, Oklahoma State University, Stillwater, OK 74078-3071, USA
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48
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Affiliation(s)
- Akira SANO
- Analytical Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Hiroshi NAKAMURA
- Analytical Chemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science
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49
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Ravelet C, Grosset C, Peyrin E. Liquid chromatography, electrochromatography and capillary electrophoresis applications of DNA and RNA aptamers. J Chromatogr A 2006; 1117:1-10. [PMID: 16647074 DOI: 10.1016/j.chroma.2006.03.101] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2006] [Revised: 03/09/2006] [Accepted: 03/21/2006] [Indexed: 10/24/2022]
Abstract
The development of the systematic evolution of ligands by exponential enrichment (SELEX) process has allowed the isolation of oligonucleotide sequences (referred as aptamers) with the capacity to recognize various classes of target molecules with high affinity and specificity. At the present time, various analytical aptamer-based formats have been developed as suitable tools for the detection and quantification of numerous targets, possessing many potential advantages over the most popular antibody technology. In this review, the aptamer applicability to the separation, purification and quantification of various analytes by liquid chromatography, capillary electrophoresis and electrochromatography is addressed.
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Affiliation(s)
- Corinne Ravelet
- Département de Pharmacochimie Moléculaire UMR 5063 CNRS, Institut de Chimie Moléculaire de Grenoble FR 2607, Université Joseph Fourier, UFR de Pharmacie de Grenoble, Avenue de Verdun, 38240 Meylan, France
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