1
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Synthesis of a metal oxide affinity chromatography magnetic mesoporous nanomaterial and development of a one-step selective phosphopeptide enrichment strategy for analysis of phosphorylated proteins. Anal Chim Acta 2022; 1195:339430. [DOI: 10.1016/j.aca.2022.339430] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 12/05/2021] [Accepted: 01/01/2022] [Indexed: 11/23/2022]
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2
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Iannetta AA, Hicks LM. Maximizing Depth of PTM Coverage: Generating Robust MS Datasets for Computational Prediction Modeling. Methods Mol Biol 2022; 2499:1-41. [PMID: 35696073 DOI: 10.1007/978-1-0716-2317-6_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Post-translational modifications (PTMs) regulate complex biological processes through the modulation of protein activity, stability, and localization. Insights into the specific modification type and localization within a protein sequence can help ascertain functional significance. Computational models are increasingly demonstrated to offer a low-cost, high-throughput method for comprehensive PTM predictions. Algorithms are optimized using existing experimental PTM data, thus accurate prediction performance relies on the creation of robust datasets. Herein, advancements in mass spectrometry-based proteomics technologies to maximize PTM coverage are reviewed. Further, requisite experimental validation approaches for PTM predictions are explored to ensure that follow-up mechanistic studies are focused on accurate modification sites.
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Affiliation(s)
- Anthony A Iannetta
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Leslie M Hicks
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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3
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Schütt J, Illing R, Volkov O, Kosub T, Granell PN, Nhalil H, Fassbender J, Klein L, Grosz A, Makarov D. Two Orders of Magnitude Boost in the Detection Limit of Droplet-Based Micro-Magnetofluidics with Planar Hall Effect Sensors. ACS OMEGA 2020; 5:20609-20617. [PMID: 32832814 PMCID: PMC7439703 DOI: 10.1021/acsomega.0c02892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Magnetofluidics is a dynamic research field, which requires novel sensor solutions to boost the detection limit of tiny quantities of magnetized objects. Here, we present a sensing strategy relying on planar Hall effect sensors in droplet-based micro-magnetofluidics for the detection of a multiphase liquid flow, i.e., superparamagnetic aqueous droplets in an oil carrier phase. The high resolution of the sensor allows the detection of nanoliter-sized superparamagnetic droplets with a concentration of 0.58 mg/cm3, even when they are biased in a geomagnetic field only. The limit of detection can be boosted another order of magnitude, reaching 0.04 mg/cm3 (1.4 million particles in a single 100 nL droplet) when a magnetic field of 5 mT is applied to bias the droplets. With this performance, our sensing platform outperforms the state-of-the-art solutions in droplet-based micro-magnetofluidics by a factor of 100. This allows us to detect ferrofluid droplets in clinically and biologically relevant concentrations and even below without the need of externally applied magnetic fields. These results open the route for new strategies of the utilization of ferrofluids in microfluidic geometries in, e.g., bio(-chemical) or medical applications.
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Affiliation(s)
- Julian Schütt
- Helmholtz-Zentrum
Dresden-Rossendorf e.V., Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Rico Illing
- Helmholtz-Zentrum
Dresden-Rossendorf e.V., Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Oleksii Volkov
- Helmholtz-Zentrum
Dresden-Rossendorf e.V., Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Tobias Kosub
- Helmholtz-Zentrum
Dresden-Rossendorf e.V., Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Pablo Nicolás Granell
- Helmholtz-Zentrum
Dresden-Rossendorf e.V., Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
- Escuela
de Ciencia y Tecnología, UNSAM, Campus Miguelete, B1650KNA San Martín, Buenos Aires, Argentina
- Instituto
Nacional de Tecnología Industrial, Av. Gral Paz 5445, B1650KNA San Martín, Buenos Aires, Argentina
| | - Hariharan Nhalil
- Department
of Physics & Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Jürgen Fassbender
- Helmholtz-Zentrum
Dresden-Rossendorf e.V., Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
| | - Lior Klein
- Department
of Physics & Institute of Nanotechnology and Advanced Materials, Bar-Ilan University, Ramat Gan 5290002, Israel
| | - Asaf Grosz
- Department
of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beersheba 84105, Israel
| | - Denys Makarov
- Helmholtz-Zentrum
Dresden-Rossendorf e.V., Institute of Ion
Beam Physics and Materials Research, Bautzner Landstrasse 400, 01328 Dresden, Germany
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4
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Wei JL, Huang DY, Chen YC. Using gadolinium ions as affinity probes to selectively enrich and magnetically isolate bacteria from complex samples. Anal Chim Acta 2020; 1113:18-25. [DOI: 10.1016/j.aca.2020.03.046] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/20/2020] [Accepted: 03/22/2020] [Indexed: 01/13/2023]
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5
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Yang Q, Dong Y, Qiu Y, Yang X, Cao H, Wu Y. Design of Functional Magnetic Nanocomposites for Bioseparation. Colloids Surf B Biointerfaces 2020; 191:111014. [PMID: 32325362 DOI: 10.1016/j.colsurfb.2020.111014] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/03/2020] [Indexed: 12/31/2022]
Abstract
Magnetic materials have been widely used in bioseparation in recent years due to their good biocompatibility, magnetic properties, and high binding capacity. In this review, we provide a brief introduction on the preparation and bioseparation applications of magnetic materials including the synthesis and surface modification of magnetic nanoparticles as well as the preparation and applications of magnetic nanocomposites in the separation of proteins, peptides, cells, exosomes and blood. The current limitations and remaining challenges in the fabrication process of magnetic materials for bioseparation will be also detailed.
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Affiliation(s)
- Qi Yang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan 610064, PR China; Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Yi Dong
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Yong Qiu
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Xinzhou Yang
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Han Cao
- Dehong Biomedical Engineering Research Center, Dehong Teachers' College, Dehong, Yunnan 678400, PR China
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, Sichuan 610064, PR China.
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6
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Bai YL, Shahed-Al-Mahmud M, Selvaprakash K, Lin NT, Chen YC. Tail Fiber Protein-Immobilized Magnetic Nanoparticle-Based Affinity Approaches for Detection of Acinetobacter baumannii. Anal Chem 2019; 91:10335-10342. [DOI: 10.1021/acs.analchem.9b02964] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Yi-Ling Bai
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Md. Shahed-Al-Mahmud
- Master Program in Microbiology and Immunology, School of Medicine, Tzu Chi University, Hualien 970, Taiwan
| | | | - Nien-Tsung Lin
- Master Program in Microbiology and Immunology, School of Medicine, Tzu Chi University, Hualien 970, Taiwan
| | - Yu-Chie Chen
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan
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7
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Recent advances in sample pre-treatment for emerging methods in proteomic analysis. Talanta 2017; 174:738-751. [DOI: 10.1016/j.talanta.2017.06.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 06/14/2017] [Accepted: 06/19/2017] [Indexed: 12/21/2022]
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8
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Salimi K, Usta DD, Koçer İ, Çelik E, Tuncel A. Highly selective magnetic affinity purification of histidine-tagged proteins by Ni2+ carrying monodisperse composite microspheres. RSC Adv 2017. [DOI: 10.1039/c6ra27736e] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A magnetic sorbent based on monodisperse-porous silica microspheres was developed for His-tagged protein purification by immobilized metal affinity chromatography.
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Affiliation(s)
- Kouroush Salimi
- Chemical Engineering Department
- Hacettepe University
- Ankara
- Turkey
| | - Duygu Deniz Usta
- Department of Medical Biology and Genetics
- Gazi University
- Ankara
- Turkey
- Department of Medical Biology
| | - İlkay Koçer
- Chemical Engineering Department
- Hacettepe University
- Ankara
- Turkey
| | - Eda Çelik
- Chemical Engineering Department
- Hacettepe University
- Ankara
- Turkey
- Institute of Science
| | - Ali Tuncel
- Chemical Engineering Department
- Hacettepe University
- Ankara
- Turkey
- Division of Nanotechnology and Nanomedicine
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9
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10
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Kuo FY, Lin WL, Chen YC. Affinity capture using peptide-functionalized magnetic nanoparticles to target Staphylococcus aureus. NANOSCALE 2016; 8:9217-9225. [PMID: 27087258 DOI: 10.1039/c6nr00368k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Staphylococcus aureus, a commonly found pathogen, can cause food poisoning and infections. Thus, it is necessary to develop analytical methods for the rapid screening of S. aureus in suspicious samples. Magnetic nanoparticles (MNPs) are widely used as affinity probes to selectively enrich target species from complex samples because of their high specific surface area and magnetic properties. The MNP surface should be functionalized to have the capability to target specific species. We herein propose a straightforward method to functionalize aluminum oxide-coated iron oxide (Fe3O4@Al2O3) MNPs with the peptide HHHHHHDEEGLFVD (D). The peptide D was comprised of three domains: polyhistidine (H6) used as the linker, DEE added as the spacer, and GLFVD used for targeting S. aureus. D was immobilized on the surface of Fe3O4@Al2O3 MNPs through H6-Al chelation. Our results showed that the D-functionalized Fe3O4@Al2O3 MNPs (D-Fe3O4 MNPs) possess the capability to target S. aureus. The selective trapping experiments were conducted under microwave-heating for only 60 s, and sufficient bacterial cells were trapped by the MNPs to be identified by matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS). We demonstrated that the D-Fe3O4@Al2O3 MNPs combined with MALDI-MS can be used to rapidly characterize trace amounts of S. aureus in complex juice and egg samples.
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Affiliation(s)
- Fang-Yin Kuo
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan.
| | - Wei-Lien Lin
- Institute of Molecular Science, National Chiao Tung University, Hsinchu 300, Taiwan
| | - Yu-Chie Chen
- Department of Applied Chemistry, National Chiao Tung University, Hsinchu 300, Taiwan. and Institute of Molecular Science, National Chiao Tung University, Hsinchu 300, Taiwan
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11
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Tan J, Chen X, Du G, Luo Q, Li X, Liu Y, Liang X, Wu J. Multi-dimensional on-particle detection technology for multi-category disease classification. Chem Commun (Camb) 2016; 52:3490-3. [DOI: 10.1039/c5cc09419d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Multidimensional on-particle detection technology expands the capacity of serum peptide information and reveals disease biomarkers for future clinical diagnosis.
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Affiliation(s)
- Jie Tan
- Institute of Microanalytical System (IMAS)
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Xiaomin Chen
- Institute of Microanalytical System (IMAS)
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Guansheng Du
- Institute of Microanalytical System (IMAS)
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Qiaohui Luo
- Institute of Microanalytical System (IMAS)
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Xiao Li
- Institute of Microanalytical System (IMAS)
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Yaqing Liu
- Institute of Microanalytical System (IMAS)
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
| | - Xiao Liang
- Department of General Surgery
- Sir Run Run Shaw Hospital School of Medicine
- Zhejiang University
- Hangzhou
- China
| | - Jianmin Wu
- Institute of Microanalytical System (IMAS)
- Department of Chemistry
- Zhejiang University
- Hangzhou
- China
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12
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Kuo FY, Chang BY, Wu CY, Mong KKT, Chen YC. Magnetic Nanoparticle-Based Platform for Characterization of Shiga-like Toxin 1 from Complex Samples. Anal Chem 2015; 87:10513-20. [PMID: 26447488 DOI: 10.1021/acs.analchem.5b02712] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Foodborne illness outbreaks resulting from contamination of Escherichia coli O157:H7 remain a serious concern in food safety. E. coli O157:H7 can cause bloody diarrhea, hemolytic uremic syndrome, or even death. The pathogenicity of E. coli O157:H7 is mainly caused by the expression of Shiga-like toxins (SLTs), i.e., SLT-1 and SLT-2. SLTs are pentamers composed of a single A and five B subunits. In this study, we propose a magnetic nanoparticle (MNP)-based platform to rapidly identify SLT-1 from the complex cell lysate of E. coli O157:H7. The core of the MNPs is made of iron oxide, whereas the surface of the core is coated with a thin layer of alumina (Fe3O4@Al2O3 MNPs). The Fe3O4@Al2O3 MNPs are functionalized with pigeon ovalbumin (POA), which contains Gal-α(1→4)-Gal-β(1→4)-GlcNAc termini that can bind SLT-1B selectively. Furthermore, POA is a phosphate protein. Thus, it can be easily immobilized on the surface of the Fe3O4@Al2O3 MNPs through aluminum phosphate chelation under microwave heating within 1.5 min. The generated POA-Fe3O4@Al2O3 MNPs are capable of effectively enriching SLT-1B from complex cell lysates simply by pipetting 20 μL of the sample in and out of the tip in a vial for ∼1 min. To release SLT-1 from the MNPs, Gal-α(1→4)-Gal disaccharides were used for displacement. The released target species are sufficient to be identified by matrix-assisted laser desorption/ionization mass spectrometry. Although the sample volume used in this approach is small (20 μL) and the enrichment time is short (1 min), the selectivity of this approach toward SLT-1B is quite good. We have demonstrated the effectiveness of this approach for rapid determination of the presence of SLT-1 from complex cell lysates and ham/juice samples based on the detection of SLT-1B.
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Affiliation(s)
- Fang-Yin Kuo
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
| | - Bo-Yao Chang
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
| | - Ching-Yi Wu
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
| | - Kwok-Kong Tony Mong
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
| | - Yu-Chie Chen
- Department of Applied Chemistry, National Chiao Tung University , Hsinchu 300, Taiwan
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13
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Lu L, Wang X, Xiong C, Yao L. Recent advances in biological detection with magnetic nanoparticles as a useful tool. Sci China Chem 2015. [DOI: 10.1007/s11426-015-5370-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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14
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Kailasa SK, Wu HF. Nanomaterial-based miniaturized extraction and preconcentration techniques coupled to matrix-assisted laser desorption/ionization mass spectrometry for assaying biomolecules. Trends Analyt Chem 2015. [DOI: 10.1016/j.trac.2014.09.011] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Zheng J, Lin Z, Lin G, Yang H, Zhang L. Preparation of magnetic metal–organic framework nanocomposites for highly specific separation of histidine-rich proteins. J Mater Chem B 2015; 3:2185-2191. [DOI: 10.1039/c4tb02007c] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports a novel metal–organic framework (MOF)-based metal affinity platform for the rapid and highly specific separation of histidine-rich proteins using zeolitic imidazolate framework-8 coated magnetic nanocomposites (denoted as Fe3O4@ZIF-8).
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Affiliation(s)
- Jiangnan Zheng
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zian Lin
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Guo Lin
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Huanghao Yang
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Lan Zhang
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety
- Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety
- College of Chemistry
- Fuzhou University
- Fuzhou
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16
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Liu Y, Li Y, Wei Y. Highly selective isolation and purification of heme proteins in biological samples using multifunctional magnetic nanospheres. J Sep Sci 2014; 37:3745-52. [DOI: 10.1002/jssc.201400370] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 09/22/2014] [Accepted: 09/28/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Yating Liu
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing P. R. China
| | - Yan Li
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing P. R. China
| | - Yun Wei
- State Key Laboratory of Chemical Resource Engineering; Beijing University of Chemical Technology; Beijing P. R. China
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17
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Hu C, Yue W, Yang M. Nanoparticle-based signal generation and amplification in microfluidic devices for bioanalysis. Analyst 2014; 138:6709-20. [PMID: 24067742 DOI: 10.1039/c3an01321a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Signal generation and amplification based on nanomaterials and microfluidic techniques have both attracted considerable attention separately due to the demands for ultrasensitive and high-throughput detection of biomolecules. This article reviews the latest development of signal amplification strategies based on nanoparticles for bioanalysis and their integration and applications in microfluidic systems. The applications of nanoparticles in bioanalysis were categorized based on the different approaches of signal amplification, and the microfluidic techniques were summarized based on cell analysis and biomolecule detection with a focus on the integration of nanoparticle-based amplification in microfluidic devices for ultrasensitive bioanalysis. The advantages and limitations of the combination of nanoparticles-based amplification with microfluidic techniques were evaluated, and the possible developments for future research were discussed.
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Affiliation(s)
- Chong Hu
- Department of Biology and Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, People's Republic of China.
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18
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Zheng J, Lin Z, Liu W, Wang L, Zhao S, Yang H, Zhang L. One-pot synthesis of CuFe 2O 4 magnetic nanocrystal clusters for highly specific separation of histidine-rich proteins. J Mater Chem B 2014; 2:6207-6214. [PMID: 32262138 DOI: 10.1039/c4tb00986j] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work reports a facile ligand-free method for the rapid and highly specific separation of histidine (His)-rich proteins using CuFe2O4 magnetic nanocrystal clusters (MNCs). Monodispersed CuFe2O4 MNCs were synthesized via a simple and economical one-pot hydrothermal process. The resulting MNCs were characterized in detail. The measurements indicated that the MNCs exhibited good dispersion, high crystallinity, and superparamagnetic properties. Moreover, the obtained MNCs had a high saturation magnetization (45.1 emu g-1), which was sufficient to accomplish fast and efficient separation with an external magnetic field. The selectivity and binding capacity of CuFe2O4 MNCs were evaluated using a His-rich protein (bovine haemoglobin) and other proteins (bovine serum albumin, human serum albumin, myoglobin, lysozyme, cytochrome c and horseradish peroxidase) containing fewer surface-exposed His residues as model samples. The most distinct feature of the CuFe2O4 MNCs is the high haemoglobin binding capacity (4475 mg g-1) due to the coordination between copper(ii) ions and surface-exposed histidine resides of haemoglobin. In addition, the CuFe2O4 MNCs can be successfully employed to selectively bind and remove abundant haemoglobin from human blood samples. The good results demonstrate the potential of CuFe2O4 MNCs in the separation of His-rich proteins.
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Affiliation(s)
- Jiangnan Zheng
- Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, China.
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19
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Chiu TC. Recent advances in bacteria identification by matrix-assisted laser desorption/ionization mass spectrometry using nanomaterials as affinity probes. Int J Mol Sci 2014; 15:7266-80. [PMID: 24786089 PMCID: PMC4057671 DOI: 10.3390/ijms15057266] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/14/2014] [Accepted: 04/16/2014] [Indexed: 02/01/2023] Open
Abstract
Identifying trace amounts of bacteria rapidly, accurately, selectively, and with high sensitivity is important to ensuring the safety of food and diagnosing infectious bacterial diseases. Microbial diseases constitute the major cause of death in many developing and developed countries of the world. The early detection of pathogenic bacteria is crucial in preventing, treating, and containing the spread of infections, and there is an urgent requirement for sensitive, specific, and accurate diagnostic tests. Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) is an extremely selective and sensitive analytical tool that can be used to characterize different species of pathogenic bacteria. Various functionalized or unmodified nanomaterials can be used as affinity probes to capture and concentrate microorganisms. Recent developments in bacterial detection using nanomaterials-assisted MALDI-MS approaches are highlighted in this article. A comprehensive table listing MALDI-MS approaches for identifying pathogenic bacteria, categorized by the nanomaterials used, is provided.
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Affiliation(s)
- Tai-Chia Chiu
- Department of Applied Science, National Taitung University, 684 Section 1, Chunghua Road, Taitung 95002, Taiwan.
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20
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Ji Y, Lv R, Xu Z, Zhao C, Zhang H. Preparation and characterization of an amphipathic magnetic nanosphere. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2014; 2014:976145. [PMID: 24729917 PMCID: PMC3963122 DOI: 10.1155/2014/976145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Accepted: 01/04/2014] [Indexed: 06/03/2023]
Abstract
The amphipathic magnetic nanospheres were synthesized using C8 and polyethylene glycol as ligands. Their morphology, structure, and composition were characterized by transmission electron microscope, Fourier transform infrared, and elementary analysis. The prepared materials presented uniform sphere with size distribution about 200 nm. The magnetic characteristics of magnetic nanomaterials were measured by vibrating sample magnetometer. The target products had a saturation magnetization value of 50 emu g(-1) and superparamagnetism. The adsorption capability was also studied by static tests, and the material was applied to enrich benzenesulfonamide from calf serum. The results exhibited that the C8-PEG phase owned better adsorption capability, biocompatible property, and dispersivity in aqueous samples.
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Affiliation(s)
- Yongsheng Ji
- College of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450000, China
| | - Ruihong Lv
- College of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450000, China
| | - Zhigang Xu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - Chuande Zhao
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - Haixia Zhang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Lanzhou University, Lanzhou 730000, China
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21
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Gao R, Mu X, Zhang J, Tang Y. Specific recognition of bovine serum albumin using superparamagnetic molecularly imprinted nanomaterials prepared by two-stage core–shell sol–gel polymerization. J Mater Chem B 2014; 2:783-792. [DOI: 10.1039/c3tb21424a] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Grasso G, Magrì A, Bellia F, Pietropaolo A, La Mendola D, Rizzarelli E. The copper(II) and zinc(II) coordination mode of HExxH and HxxEH motif in small peptides: the role of carboxylate location and hydrogen bonding network. J Inorg Biochem 2013; 130:92-102. [PMID: 24184693 DOI: 10.1016/j.jinorgbio.2013.09.021] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/30/2013] [Accepted: 09/30/2013] [Indexed: 10/26/2022]
Abstract
Copper(II) and zinc(II) complexes with two hexapeptides encompassing HExxH and HxxEH motif were characterized by means of a combined experimental and theoretical approach. Parallel tempering and density functional theory (DFT) investigations show the presence of different hydrogen bonding networks between the copper(II) and zinc(II) complexes with the two peptides, suggesting a significant contribution of these non-covalent interactions to the stability constant values. The glutamate carboxylate group has a direct role in metal ion binding. The location of this amino acid along the sequence of the investigated peptides is critical to determine thermodynamic and spectroscopic features of the copper(II) complex species, whereas is less relevant in the zinc(II) complexes formation. Electrospray ionization mass spectrometry (ESI-MS) characterization of the zinc(II) complex species show that in the [ZnH-2L] two deprotonated amide nitrogen atoms are involved in the metal coordination environment, an uncommon behavior in zinc(II) complexes for multi-histidine ligands.
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Affiliation(s)
- Giuseppe Grasso
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, Viale A. Doria 6, 95125 Catania, Italy
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