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Vedarethinam V, Jeevanandam J, Acquah C, Danquah MK. Magnetic Nanoparticles for Protein Separation and Purification. Methods Mol Biol 2023; 2699:125-159. [PMID: 37646997 DOI: 10.1007/978-1-0716-3362-5_8] [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: 09/01/2023]
Abstract
Proteins are essential for various functions such as brain activity and muscle contraction in humans. Even though food is a source of proteins, the bioavailability of proteins in most foods is usually limited due to matrix interaction with other biomolecules. Thus, it is essential to extract these proteins and provide them as a nutraceutical supplement to maintain protein levels and avoid protein deficiency. Hence, protein purification and extraction from natural sources are highly significant in biomedical applications. Chromatography, crude mechanical disruption, use of extractive chemicals, and electrophoresis are some of the methods applied to isolate specific proteins. Even though these methods possess several advantages, they are unable to extract specific proteins with high purity. A suitable alternative is the use of nanoparticles, which can be beneficial in protein purification and extraction. Notably, magnetic iron and iron-based nanoparticles have been employed in protein extraction processes and can be reused via demagnetization due to their magnetic property, smaller size, morphology, high surface-to-volume ratio, and surface charge-mediated property. This chapter is a summary of various magnetic nanoparticles (MNPs) that can be used for the biomolecular separation of proteins.
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Affiliation(s)
- Vadanasundari Vedarethinam
- Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Jaison Jeevanandam
- CQM - Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, Funchal, Portugal
| | - Caleb Acquah
- Faculty of Health Sciences, University of Ottawa, Ottawa, ON, Canada
| | - Michael K Danquah
- Chemical Engineering Department, University of Tennessee, Chattanooga, TN, USA.
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Zhao M, Yao X, Liu S, Zhang H, Wang L, Yin X, Su L, Xu B, Wang J, Lan Q, Zhang D. Antibiotic and mammal IgG based lateral flow assay for simple and sensitive detection of Staphylococcus aureus. Food Chem 2020; 339:127955. [PMID: 32919344 DOI: 10.1016/j.foodchem.2020.127955] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 08/07/2020] [Accepted: 08/27/2020] [Indexed: 12/29/2022]
Abstract
Lateral flow assay (LFA), performed with simple devices and short detection time, is popular in field applications. Herein, a novel sandwich type-based LFA was constructed for high sensitivity and selectivity detection of Staphylococcus aureus (S. aureus). Vancomycin-immobilized gold nanoparticles (VAN-Au NPs) were utilized as the first identifier to capture S. aureus and the specificity was guaranteed by the second recognition agent of pig immunoglobulin G (IgG). In addition, gold growth was adopted for signal amplification to further improve the detection sensitivity. S. aureus could be directly assayed by this LFA within the concentration range of 1.0 × 103-1.0 × 108 cfu mL-1 with a detection limit of 1.0 × 103 cfu mL-1. Furthermore, the novel sandwich LFA realized S. aureus detection in food samples with admissible recoveries and established a rapid, simple, cost-effective and sensitive platform, could meet the demand for on-site testing of S. aureus.
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Affiliation(s)
- Man Zhao
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xiaolin Yao
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Sijie Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Han Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Lulu Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Xuechi Yin
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Lihong Su
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Baocheng Xu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471003, China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Quanxue Lan
- Longgang Center for Disease Control and Prevention in Shenzhen, Shenzhen 518172, Guangdong, China
| | - Daohong Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling 712100, Shaanxi, China.
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Abstract
Dextran aldehyde (dexOx), resulting from the periodate oxidative cleavage of 1,2-diol moiety inside dextran, is a polymer that is very useful in many areas, including as a macromolecular carrier for drug delivery and other biomedical applications. In particular, it has been widely used for chemical engineering of enzymes, with the aim of designing better biocatalysts that possess improved catalytic properties, making them more stable and/or active for different catalytic reactions. This polymer possesses a very flexible hydrophilic structure, which becomes inert after chemical reduction; therefore, dexOx comes to be highly versatile in a biocatalyst design. This paper presents an overview of the multiple applications of dexOx in applied biocatalysis, e.g., to modulate the adsorption of biomolecules on carrier surfaces in affinity chromatography and biosensors design, to serve as a spacer arm between a ligand and the support in biomacromolecule immobilization procedures or to generate artificial microenvironments around the enzyme molecules or to stabilize multimeric enzymes by intersubunit crosslinking, among many other applications.
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Cui C, Zeng C, Wang C, Zhang L. Complex Emulsions by Extracting Water from Homogeneous Solutions Comprised of Aqueous Three-Phase Systems. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12670-12680. [PMID: 29022717 DOI: 10.1021/acs.langmuir.7b02888] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Multiple emulsions can be obtained by binary and ternary liquid phase separation. And the use of the aqueous two-phase system provides a simple route to prepare water-in-water-in-oil (W/W/O) or water-in-water-in-water (W/W/W) multiple emulsions. It is thus expected that we can fabricate more complex emulsions by using an aqueous three-phase system. Herein, we present a simple and versatile method to generate complex emulsions based on phase separation in homogeneous droplets made up of aqueous three-phase system: poly(ethylene glycol) (PEG), poly(vinyl alcohol) (PVA) and dextran (DEX) through extracting water from droplets. We examine the formation process and the effect of mass ratio of each two components in the three phase system. Emulsion droplets with five types of morphologies, i.e., binary-core/shell, core/shell-single phase Janus, ellipsoid Janus, multicore-in-matrix and single core-double shell morphologies can be formed, depending on the mass ratio of each two components and modification of PEG with Fe3O4 nanoparticles. We observe transition of core/shell-single phase Janus to binary-core/shell and single core-double shell to core/shell-single phase Janus geometry with prolongation of extracting time, and obtain the geometry map for the formation of different shaped droplets. Due to different affinities of PEG, PVA and DEX to certain materials, we functionalize each compartment in the complex emulsion droplets, and apply the resulting droplet for glucose sensing and the construction of antibody-mediated targeting drug delivery. This emulsion generation method is simple and the choice for the component of the aqueous three-phase system is broad, which can be further extended to generate complex emulsions from aqueous multiphase systems.
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Affiliation(s)
- Chen Cui
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering and ‡College of Mechanical and Power Engineering, Nanjing Tech University , No. 5 Xin Mofan Road, Nanjing 210009, People's Republic of China
| | - Changfeng Zeng
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering and ‡College of Mechanical and Power Engineering, Nanjing Tech University , No. 5 Xin Mofan Road, Nanjing 210009, People's Republic of China
| | - Chongqing Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering and ‡College of Mechanical and Power Engineering, Nanjing Tech University , No. 5 Xin Mofan Road, Nanjing 210009, People's Republic of China
| | - Lixiong Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering and ‡College of Mechanical and Power Engineering, Nanjing Tech University , No. 5 Xin Mofan Road, Nanjing 210009, People's Republic of China
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Yang S, Ouyang H, Su X, Gao H, Kong W, Wang M, Shu Q, Fu Z. Dual-recognition detection of Staphylococcus aureus using vancomycin-functionalized magnetic beads as concentration carriers. Biosens Bioelectron 2016; 78:174-180. [DOI: 10.1016/j.bios.2015.11.041] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/10/2015] [Accepted: 11/13/2015] [Indexed: 01/14/2023]
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Shi J, Chan C, Pang Y, Ye W, Tian F, Lyu J, Zhang Y, Yang M. A fluorescence resonance energy transfer (FRET) biosensor based on graphene quantum dots (GQDs) and gold nanoparticles (AuNPs) for the detection of mecA gene sequence of Staphylococcus aureus. Biosens Bioelectron 2014; 67:595-600. [PMID: 25288044 DOI: 10.1016/j.bios.2014.09.059] [Citation(s) in RCA: 202] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 09/22/2014] [Accepted: 09/22/2014] [Indexed: 12/20/2022]
Abstract
In this work, a novel fluorescence resonance energy transfer (FRET) biosensor based on graphene quantum dots (GQDs) and gold nanoparticles (AuNPs) pairs was developed for Staphylococcus aureus specific gene sequence detection. This FRET biosensor platform was realized by immobilization of capture probes on GQDs and conjugation of reporter probes on AuNPs. Target oligos then co-hybridized with capture probes and reporter probes to form a sandwich structure which brought GQDs and AuNPs to close proximity to trigger FRET effect. The fluorescence signals before and after addition of targets were measured and the fluorescence quenching efficiency could reach around 87% with 100 nM target oligo. The limit of detection (LOD) of this FRET biosensor was around 1 nM for S.aureus gene detection. Experiments with both single-base mismatched oligos and double-base mismatched oligos demonstrated the good sequence selectivity of this FRET biosensor.
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Affiliation(s)
- Jingyu Shi
- Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Chunyu Chan
- Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Yukting Pang
- Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Weiwei Ye
- Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Feng Tian
- Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Jing Lyu
- Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Yu Zhang
- Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Mo Yang
- Interdisciplinary Division of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
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Kumada Y. Site-specific immobilization of recombinant antibody fragments through material-binding peptides for the sensitive detection of antigens in enzyme immunoassays. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1844:1960-1969. [PMID: 25119345 DOI: 10.1016/j.bbapap.2014.07.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 07/05/2014] [Accepted: 07/11/2014] [Indexed: 12/26/2022]
Abstract
The immobilization of an antibody is one of the key technologies that are used to enhance the sensitivity and efficiency of the detection of target molecules in immunodiagnosis and immunoseparation. Recombinant antibody fragments such as VHH, scFv and Fabs produced by microorganisms are the next generation of ligand antibodies as an alternative to conventional whole Abs due to a smaller size and the possibility of site-directed immobilization with uniform orientation and higher antigen-binding activity in the adsorptive state. For the achievement of site-directed immobilization, affinity peptides for a certain ligand molecule or solid support must be introduced to the recombinant antibody fragments. In this mini-review, immobilization technologies for the whole antibodies (whole Abs) and recombinant antibody fragments onto the surfaces of plastics are introduced. In particular, the focus here is on immobilization technologies of recombinant antibody fragments utilizing affinity peptide tags, which possesses strong binding affinity towards the ligand molecules. Furthermore, I introduced the material-binding peptides that are capable of direct recognition of the target materials. Preparation and immobilization strategies for recombinant antibody fragments linked to material-binding peptides (polystyrene-binding peptides (PS-tags) and poly (methyl methacrylate)-binding peptide (PMMA-tag)) are the focus here, and are based on the enhancement of sensitivity and a reduction in the production costs of ligand antibodies. This article is part of a Special Issue entitled: Recent advances in molecular engineering of antibody.
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Affiliation(s)
- Yoichi Kumada
- Department of Biomolecular Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
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Ma K, Deng Y, Bai Y, Xu D, Chen E, Wu H, Li B, Gao L. Rapid and simultaneous detection of Salmonella, Shigella, and Staphylococcus aureus in fresh pork using a multiplex real-time PCR assay based on immunomagnetic separation. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.01.042] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Ozalp VC, Bayramoglu G, Kavruk M, Keskin BB, Oktem HA, Arica MY. Pathogen detection by core-shell type aptamer-magnetic preconcentration coupled to real-time PCR. Anal Biochem 2013; 447:119-25. [PMID: 24291643 DOI: 10.1016/j.ab.2013.11.022] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/14/2013] [Accepted: 11/19/2013] [Indexed: 10/26/2022]
Abstract
The presence of pathogenic bacteria is a major health risk factor in food samples and the commercial food supply chain is susceptible to bacterial contamination. Thus, rapid and sensitive identification methods are in demand for the food industry. Quantitative polymerase chain reaction (PCR) is one of the reliable specific methods with reasonably fast assay times. However, many constituents in food samples interfere with PCR, resulting in false results and thus hindering the usability of the method. Therefore, we aimed to develop an aptamer-based magnetic separation system as a sample preparation method for subsequent identification and quantification of the contaminant bacteria by real-time PCR. To achieve this goal, magnetic beads were prepared via suspension polymerization and grafted with glycidylmethacrylate (GMA) brushes that were modified into high quantities of amino groups. The magnetic beads were decorated with two different aptamer sequences binding specifically to Escherichia coli or Salmonella typhimurium. The results showed that even 1.0% milk inhibited PCR, but our magnetic affinity system capture of bacteria from 100% milk samples allowed accurate determination of bacterial contamination at less than 2.0 h with limit of detection around 100 CFU/mL for both bacteria in spiked-milk samples.
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Affiliation(s)
- V Cengiz Ozalp
- School of Medicine, Istanbul Kemerburgaz University, 34217 Istanbul, Turkey.
| | - Gulay Bayramoglu
- Biochemical Processing and Biomaterial Research Laboratory, Gazi University, 06500 Teknikokullar, Ankara, Turkey; Department of Chemistry, Faculty of Sciences, Gazi University, 06500 Teknikokullar, Ankara, Turkey
| | - Murat Kavruk
- Department of Biology, Middle East Technical University, Ankara, Turkey; Test and Calibration Center, Turkish Standards Institute (TSE), 41400, Gebze, Kocaeli, Turkey
| | - Batuhan B Keskin
- Department of Biology, Middle East Technical University, Ankara, Turkey
| | - Huseyin A Oktem
- Department of Biology, Middle East Technical University, Ankara, Turkey
| | - M Yakup Arica
- Biochemical Processing and Biomaterial Research Laboratory, Gazi University, 06500 Teknikokullar, Ankara, Turkey
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Design of a core–shell type immuno-magnetic separation system and multiplex PCR for rapid detection of pathogens from food samples. Appl Microbiol Biotechnol 2013; 97:9541-51. [DOI: 10.1007/s00253-013-5231-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 08/16/2013] [Accepted: 09/02/2013] [Indexed: 10/26/2022]
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Pang S, Gao Y, Li Y, Liu S, Su X. A novel sensing strategy for the detection of Staphylococcus aureus DNA by using a graphene oxide-based fluorescent probe. Analyst 2013; 138:2749-54. [DOI: 10.1039/c3an36642a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Krizkova S, Jilkova E, Krejcova L, Cernei N, Hynek D, Ruttkay-Nedecky B, Sochor J, Kynicky J, Adam V, Kizek R. Rapid superparamagnetic-beads-based automated immunoseparation of Zn-proteins fromStaphylococcus aureuswith nanogram yield. Electrophoresis 2012; 34:224-34. [DOI: 10.1002/elps.201200234] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Revised: 08/14/2012] [Accepted: 09/01/2012] [Indexed: 01/13/2023]
Affiliation(s)
| | - Eva Jilkova
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno; Czech Republic
| | - Ludmila Krejcova
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno; Czech Republic
| | - Natalia Cernei
- Department of Chemistry and Biochemistry; Faculty of Agronomy; Mendel University in Brno; Brno; Czech Republic
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Sheng S, Kong F. Separation of antigens and antibodies by immunoaffinity chromatography. PHARMACEUTICAL BIOLOGY 2012; 50:1038-1044. [PMID: 22480305 DOI: 10.3109/13880209.2011.653493] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
CONTEXT Affinity chromatography is an efficient antibody, antigen and protein separation method based on the interaction between specific immobilized ligands and target antibody, antigen, and so on. Populations of available ligands can be used to separate antibodies or their Fab fragments. Similarly, antigens can be isolated by immunoaffinity chromatography (IAC) on immobilized antibodies of low affinity. OBJECTIVE This review describes the advantages, the applications, as well as the drawbacks, of IAC in the separation and purification of antibodies and antigens. METHODS The present review discussed all types of purification and isolation of antibodies and antigens by IAC, including purification of antibodies using immobilized and synthetic mimic proteins A, G and L; isolation of Fab fragments of antibodies; separation of antibodies against different antigen forms; isolation of antigens by immobilized antibodies and so on. These methods come from over 60 references compiled from all major databases. RESULTS Purification of antigens with antibodies should choose low-affinity antibodies to avoid denaturation of most proteins. Concern for cost and safety, prompted research activities focused on novel synthetic ligands with improved properties such as lower cost, avoidance of the risk of contamination associated with natural ligands of human or animal origin to isolate antibodies and antigens. CONCLUSION It is anticipated that the improvements of IAC will have impact not only on large-scale production of antibodies but also on the generation of new affinity-based methods for the increasing number of proteins and antibody derivatives available by protein engineering and the proteomics revolution.
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Affiliation(s)
- Shuai Sheng
- Department of Hematology, Liaoning Medical University, Jinzhou, Liaoning, People's Republic of China
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Holford TR, Davis F, Higson SP. Recent trends in antibody based sensors. Biosens Bioelectron 2012; 34:12-24. [DOI: 10.1016/j.bios.2011.10.023] [Citation(s) in RCA: 203] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 10/06/2011] [Accepted: 10/13/2011] [Indexed: 12/29/2022]
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Imai T, Sano D, Miura T, Okabe S, Wada K, Masago Y, Omura T. Adsorption characteristics of an enteric virus-binding protein to norovirus, rotavirus and poliovirus. BMC Biotechnol 2011; 11:123. [PMID: 22176631 PMCID: PMC3262155 DOI: 10.1186/1472-6750-11-123] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2011] [Accepted: 12/16/2011] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Water contamination with human enteric viruses has posed human health risks all over the world. Reasonable and facile methodologies for recovering and quantifying infectious enteric viruses in environmental samples are needed to address the issues of waterborne viral infectious diseases. In this study, a bacterial protein that has a binding capability with several enteric viruses is discovered, and its binding characteristics were investigated for utilizing it as a viral adsorbent in virus recovery and detection technologies. RESULTS A gene of an enteric virus-binding protein (EVBP), derived from a monomer of a bacterial chaperon protein GroEL, was successfully acquired from a genomic DNA library of activated sludge microorganisms with nested PCR. Equilibrium dissociation constants between EVBP and norovirus-like particles (NoVLPs) of genotypes GI.7 and GII.4, estimated with quartz crystal microbalance method, were 240 and 210 nM, respectively. These values of equilibrium dissociation constant imply that the binding affinity between EVBP and NoVLPs is 1 to 3-log weaker than that in general antigen-antibody interactions, but about 2-log stronger than that in weak specific interactions of proteins with cations and organic polymers. The adsorptions of EVBP to norovirus, group A rotavirus and poliovirus type 1 were found to be significant in enzyme-linked immunosorbent assay. Meanwhile, the binding of native GroEL tetradecamer to viral particles was weaker than that of EVBP, presumably because of a steric hindrance. The small molecule of EVBP could have an advantage in the access to the surface of viral particles with rugged structure. CONCLUSIONS EVBP that has a broad binding spectrum to enteric viruses was newly discovered. The broad binding characteristic of EVBP would allow us to utilize it as a novel adsorbent for detecting diverse enteric viruses in clinical and environmental samples.
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Affiliation(s)
- Takahiro Imai
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-06, Sendai, 980-8579, Japan
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Daisuke Sano
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Takayuki Miura
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Satoshi Okabe
- Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, North 13, West 8, Kita-ku, Sapporo, Hokkaido, 060-8628, Japan
| | - Keishi Wada
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-06, Sendai, 980-8579, Japan
| | - Yoshifumi Masago
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-06, Sendai, 980-8579, Japan
| | - Tatsuo Omura
- Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, Aoba 6-6-06, Sendai, 980-8579, Japan
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Zuo H, Xie Z, Ding X, Zhang W, Yang J, Fan X, Poms R, Pei X. A novel magnetic capture-multiplex PCR assay for the simultaneous detection of three foodborne pathogens. QUALITY ASSURANCE AND SAFETY OF CROPS & FOODS 2011. [DOI: 10.1111/j.1757-837x.2011.00113.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Haojiang Zuo
- Department of Medical Technology; West China School of Public Health; Sichuan University; Chengdu; Sichuan; China
| | - Zhimei Xie
- Department of Medical Technology; West China School of Public Health; Sichuan University; Chengdu; Sichuan; China
| | - Xiaobei Ding
- Department of Medical Technology; West China School of Public Health; Sichuan University; Chengdu; Sichuan; China
| | - Weiwei Zhang
- Department of Medical Technology; West China School of Public Health; Sichuan University; Chengdu; Sichuan; China
| | - Jingyan Yang
- Department of Medical Technology; West China School of Public Health; Sichuan University; Chengdu; Sichuan; China
| | - Xuejun Fan
- Sichuan Entry-Exit Inspection and Quarantine Bureau; Chengdu; Sichuan; China
| | | | - Xiaofang Pei
- Department of Medical Technology; West China School of Public Health; Sichuan University; Chengdu; Sichuan; China
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Rapid detection of Staphylococcus aureus via a sensitive DNA hybridization assay based on a long-lifetime luminescent europium marker. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0654-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Li H, Ding X, Peng Z, Deng L, Wang D, Chen H, He Q. Aptamer selection for the detection of Escherichia coli K88. Can J Microbiol 2011; 57:453-9. [PMID: 21627466 DOI: 10.1139/w11-030] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this study, the first group of single-stranded DNA aptamers that are highly specific to enterotoxigenic Escherichia coli (ETEC) K88 was obtained from an enriched oligonucleotide pool by the SELEX (Systematic Evolution of Ligands by Exponential Enrichment) procedure, during which the K88 fimbriae protein was used as the target and bovine serum albumin as counter targets. These aptamers were applied successfully in the detection of ETEC K88. They were then grouped under different families based on the similarity of their secondary structure and the homology of their primary sequence. Four sequences from different families were deliberately chosen for further characterization by fluorescence analysis. Having the advantage of high sensitivity, fluorescence photometry was selected as single-stranded DNA quantification method during the SELEX process. Aptamers with the highest specificity and affinity were analyzed to evaluate binding ability with E. coli. Since ETEC K88 is the only type of bacterium that expressed abundant K88 fimbriae, the selected aptamers against the K88 fimbriae protein were able to specifically identify ETEC K88 among other bacteria. This method of detecting ETEC K88 by aptamers can also be applied to bacteria other than ETEC K88.
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Affiliation(s)
- Hua Li
- The Co-construction Laboratory of Microbial Molecular Biology of Province Department and Ministry of Science and Technology, College of Life Sciences, Hunan Normal University, Changsha, People's Republic of China
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Selective adsorption of small proteins on large-pore anion exchangers coated with medium size proteins. Colloids Surf B Biointerfaces 2010; 78:140-5. [DOI: 10.1016/j.colsurfb.2010.02.030] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Revised: 02/24/2010] [Accepted: 02/26/2010] [Indexed: 11/21/2022]
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Fernandes CPH, Seixas FK, Coutinho ML, Vasconcellos FA, Moreira ÂN, Conceição FR, Dellagostin OA, Aleixo JAG. An Immunomagnetic Separation-PCR Method for Detection of PathogenicLeptospirain Biological Fluids. Hybridoma (Larchmt) 2008; 27:381-6. [DOI: 10.1089/hyb.2008.0029] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | | | | | - Ângela Nunes Moreira
- Centro de Biotecnologia, Universidade Federal de Pelotas, Pelotas, Brazil
- Faculdade de Nutrição, Universidade Federal de Pelotas, Pelotas, Brazil
| | - Fabricio Rochedo Conceição
- Centro de Biotecnologia, Universidade Federal de Pelotas, Pelotas, Brazil
- Departamento de Patologia, Fundação Universidade de Rio Grande, Rio Grande, Brazil
| | - Odir Antônio Dellagostin
- Centro de Biotecnologia, Universidade Federal de Pelotas, Pelotas, Brazil
- Instituto de Biologia, Universidade Federal de Pelotas, Pelotas, Brazil
| | - José Antonio Guimarães Aleixo
- Centro de Biotecnologia, Universidade Federal de Pelotas, Pelotas, Brazil
- Faculdade de Nutrição, Universidade Federal de Pelotas, Pelotas, Brazil
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