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He J, Wang Y, Hou Y, Tang F, Tian J. Rapid and sensitive detection of glucocorticoids using engineered magnetosomes functionalized protein A conjugated broad-spectrum monoclonal antibody. Food Chem X 2024; 22:101523. [PMID: 38911916 PMCID: PMC11190481 DOI: 10.1016/j.fochx.2024.101523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 05/27/2024] [Accepted: 05/27/2024] [Indexed: 06/25/2024] Open
Abstract
Engineered bacterial magnetic nanoparticles (BMPs) fused with protein A (BMP-PA) can bind antibodies, creating immunomagnetic beads that offer an attractive tool for targets screening. In the study, BMP-PA-IgG was formed by attaching broad-spectrum monoclonal antibodies against glucocorticoids (GCs) to BMP-PA. Immunomagnetic assay was developed for analysis of GCs, using the BMP-PA-IgG and hydrocortisone-horseradish peroxidase. The developed assay exhibited broad specificity for GCs, including hydrocortisone (HCS), betamethasone (BMS), dexamethasone (DMS), prednisolone (PNS), beclomethasone (BCMS), cortisone (CS), 6-α-methylprednisone (6-α-MPNS), and fludrocortisone acetate (HFCS), with half inhibitory concentrations (IC50) ranging from 0.88 to 6.57 ng/mL. The proposed assay showed average recoveries of HCS and DMS ranging from 75.6% to 105.2% in chicken and pork samples, which were correlated well with those obtained by LC-MS/MS. This study indicated that the integration of engineered immunomagnetic beads into immunoassay systems offer possibilities for the sensitive and selective detection of GCs.
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Affiliation(s)
- Jinxin He
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yuan Wang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yaqing Hou
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Fang Tang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Jiesheng Tian
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
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2
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He J, Hou Y, Wu W, Li Y, Tang F. Development of a broad-spectrum one-step immunoassay for detection of glucocorticoids in milk using magnetosome-based immunomagnetic beads. Food Chem 2024; 441:138377. [PMID: 38219367 DOI: 10.1016/j.foodchem.2024.138377] [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] [Received: 08/30/2023] [Revised: 12/27/2023] [Accepted: 01/04/2024] [Indexed: 01/16/2024]
Abstract
Immunomagnetic beads provide novel tools for high-throughput immunoassay techniques. In this study, protein G (PG) was immobilized onto bacterial magentic particles (BMPs) using an additional cysteine residue at the C-terminus. A broad-spectrum monoclonal antibody against glucocorticoids (GCs) was attached to BMPs through PG-Fc interaction, generating BMP-PG-mIgG immunomagentic beads. A sensitive one-step immunoassay was developed for GCs based on combination of BMP-PG-mIgG and dexamethasone-horseradish peroxidase tracer (DMS-HRP). The developed assay exhibited half inhibitory concentrations (IC50) for dexamethasone (DMS), betamethasone (BMS), prednisolone (PNS), hydrocortisone (HCS), beclomethasone (BCMS), cortisone (CS), 6-α-methylprednisone (6-α-MPNS), fludrocortisone acetate (HFCS) of 0.98, 1.49, 2.42, 9.29, 1.63, 6.13, 7.3, and 4.89 ng/mL, respectively. The method showed recoveries ranging rates from 86.5 % to 117 % with a coefficient of variation less than 12.3 % in milk sample, which showed a good correlation with LC-MS/MS. Thus, the proposed assay offers a rapid and broad-spectrum screening tool for simultaneous detection of GCs in milk.
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Affiliation(s)
- Jinxin He
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China.
| | - Yaqing Hou
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Wanqi Wu
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Yujiang Li
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
| | - Fang Tang
- College of Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi 030801, PR China
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3
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Etemadi H, Buchanan JK, Kandile NG, Plieger PG. Iron Oxide Nanoparticles: Physicochemical Characteristics and Historical Developments to Commercialization for Potential Technological Applications. ACS Biomater Sci Eng 2021; 7:5432-5450. [PMID: 34786932 DOI: 10.1021/acsbiomaterials.1c00938] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Iron oxide nanoparticles (IONPs) have gained increasing attention in various biomedical and industrial sectors due to their physicochemical and magnetic properties. In the biomedical field, IONPs are being developed for enzyme/protein immobilization, magnetofection, cell labeling, DNA detection, and tissue engineering. However, in some established areas, such as magnetic resonance imaging (MRI), magnetic drug targeting (MDT), magnetic fluid hyperthermia (MFH), immunomagnetic separation (IMS), and magnetic particle imaging (MPI), IONPs have crossed from the research bench, received clinical approval, and have been commercialized. Additionally, in industrial sectors IONP-based fluids (ferrofluids) have been marketed in electronic and mechanical devices for some time. This review explores the historical evolution of IONPs to their current state in biomedical and industrial applications.
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Affiliation(s)
- Hossein Etemadi
- School of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North 4410, New Zealand
| | - Jenna K Buchanan
- School of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North 4410, New Zealand
| | - Nadia G Kandile
- Department of Chemistry, Faculty of Women, Ain Shams University, Heliopolis 11757, Cairo, Egypt
| | - Paul G Plieger
- School of Fundamental Sciences, Massey University, Private Bag 11 222, Palmerston North 4410, New Zealand
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4
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Ding J, Wang K, Tang WJ, Li D, Wei YZ, Lu Y, Li ZH, Liang XF. Construction of Epidermal Growth Factor Receptor Peptide Magnetic Nanovesicles with Lipid Bilayers for Enhanced Capture of Liver Cancer Circulating Tumor Cells. Anal Chem 2016; 88:8997-9003. [PMID: 27558867 DOI: 10.1021/acs.analchem.6b01443] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Highly effective targeted tumor recognition via vectors is crucial for cancer detection. In contrast to antibodies and proteins, peptides are direct targeting ligands with a low molecular weight. In the present study, a peptide magnetic nanovector platform containing a lipid bilayer was designed using a peptide amphiphile (PA) as a skeleton material in a controlled manner without surface modification. Fluorescein isothiocyanate-labeled epidermal growth factor receptor (EGFR) peptide nanoparticles (NPs) could specifically bind to EGFR-positive liver tumor cells. EGFR peptide magnetic vesicles (EPMVs) could efficiently recognize and separate hepatoma carcinoma cells from cell solutions and treated blood samples (ratio of magnetic EPMVs versus anti-EpCAM NPs: 3.5 ± 0.29). Analysis of the circulating tumor cell (CTC) count in blood samples from 32 patients with liver cancer showed that EPMVs could be effectively applied for CTC capture. Thus, this nanoscale, targeted cargo-packaging technology may be useful for designing cancer diagnostic systems.
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Affiliation(s)
- Jian Ding
- Digestive Department, The First Affiliated Hospital of Fujian Medical University , 20 Chazhong Road, Fuzhou 350005, China
| | - Kai Wang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine , No.25/Ln2200 Xie Tu Road, Shanghai 200032, China
| | - Wen-Jie Tang
- Research Centre for Translational Medicine, East Hospital, Tongji University School of Medicine , 150 Jimo Road, Shanghai 200120, China
| | - Dan Li
- Digestive Department, Union Hospital of Fujian Medical University , Fuzhou 350001, China
| | - You-Zhen Wei
- Research Centre for Translational Medicine, East Hospital, Tongji University School of Medicine , 150 Jimo Road, Shanghai 200120, China
| | - Ying Lu
- Research Centre for Translational Medicine, East Hospital, Tongji University School of Medicine , 150 Jimo Road, Shanghai 200120, China
| | - Zong-Hai Li
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine , No.25/Ln2200 Xie Tu Road, Shanghai 200032, China
| | - Xiao-Fei Liang
- State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, Shanghai Jiaotong University School of Medicine , No.25/Ln2200 Xie Tu Road, Shanghai 200032, China
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5
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Matsuoka H. ELECTROCHEMISTRY 2016; 84:107-115. [DOI: 10.5796/electrochemistry.84.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Honda T, Tanaka T, Yoshino T. Stoichiometrically Controlled Immobilization of Multiple Enzymes on Magnetic Nanoparticles by the Magnetosome Display System for Efficient Cellulose Hydrolysis. Biomacromolecules 2015; 16:3863-8. [PMID: 26571204 DOI: 10.1021/acs.biomac.5b01174] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The immobilization of multiple cellulase complexes receiving attention for use in the efficient hydrolysis of celluloses. In this study, the magnetosome display system was employed for the preparation of systems mimicking natural multiple cellulase complexes (cellulosomes) on magnetic nanoparticles (MNPs). Initially, two fluorescent proteins, namely, green fluorescent protein and mCherry, were immobilized on MNPs. Fluorescence analysis revealed the close proximity of two different proteins on the MNPs. Enzyme-linked immunosorbent assay analysis showed that stoichiometrically equivalent amounts of the proteins were immobilized on the MNPs. Next, endoglucanase (EG) and β-glucosidase (BG) were immobilized on MNPs to give EG/BG-MNPs. The resulting MNPs were applied for the hydrolysis of celluloses, with rapid hydrolysis of carboxymethyl cellulose being observed. Furthermore, the fusion of the cellulose-binding domain to EG/BG-MNPs promoted improved hydrolysis activity against the insoluble cellulose. We could therefore conclude that the magnetosome display system can expand the possibilities of mimicking natural cellulosome organization on MNPs.
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Affiliation(s)
- Toru Honda
- Division of Biotechnology and Life Science, Institute of Engineering, Tokyo University of Agriculture and Technology , 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Tsuyoshi Tanaka
- Division of Biotechnology and Life Science, Institute of Engineering, Tokyo University of Agriculture and Technology , 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Tomoko Yoshino
- Division of Biotechnology and Life Science, Institute of Engineering, Tokyo University of Agriculture and Technology , 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
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Abstract
Magnetotactic bacteria (MTB) represent a heterogeneous group of Gram-negative aquatic prokaryotes with a broad range of morphological types, including vibrioid, coccoid, rod and spirillum. MTBs possess the virtuosity to passively align and actively swim along the magnetic field. Magnetosomes are the trademark nano-ranged intracellular structures of MTB, which comprise magnetic iron-bearing inorganic crystals enveloped by an organic membrane, and are dedicated organelles for their magnetotactic lifestyle. Magnetosomes endue high and even dispersion in aqueous solutions compared with artificial magnetites, claiming them as paragon nanomaterials. MTB and magnetosomes offer high technological potential in modern science, technology and medicines. This review focuses on the applicability of MTB and magnetosomes in various areas of modern benefits.
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Honda T, Maeda Y, Yasuda T, Tanaka T, Matsunaga T, Yoshino T. Novel designs of single-chain MHC I/peptide complex for the magnetosome display system. Protein Eng Des Sel 2015; 28:53-8. [DOI: 10.1093/protein/gzu056] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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9
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Chen Y, Lee S. Manipulation of Biological Objects Using Acoustic Bubbles: A Review. Integr Comp Biol 2014; 54:959-68. [DOI: 10.1093/icb/icu091] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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10
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Sengupta A, Quiaoit K, Thompson RT, Prato FS, Gelman N, Goldhawk DE. Biophysical features of MagA expression in mammalian cells: implications for MRI contrast. Front Microbiol 2014; 5:29. [PMID: 24550900 PMCID: PMC3913841 DOI: 10.3389/fmicb.2014.00029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Accepted: 01/17/2014] [Indexed: 12/28/2022] Open
Abstract
We compared overexpression of the magnetotactic bacterial gene MagA with the modified mammalian ferritin genes HF + LF, in which both heavy and light subunits lack iron response elements. Whereas both expression systems have been proposed for use in non-invasive, magnetic resonance (MR) reporter gene expression, limited information is available regarding their relative potential for providing gene-based contrast. Measurements of MR relaxation rates in these expression systems are important for optimizing cell detection and specificity, for developing quantification methods, and for refinement of gene-based iron contrast using magnetosome associated genes. We measured the total transverse relaxation rate (R2*), its irreversible and reversible components (R2 and R2', respectively) and the longitudinal relaxation rate (R1) in MDA-MB-435 tumor cells. Clonal lines overexpressing MagA and HF + LF were cultured in the presence and absence of iron supplementation, and mounted in a spherical phantom for relaxation mapping at 3 Tesla. In addition to MR measures, cellular changes in iron and zinc were evaluated by inductively coupled plasma mass spectrometry, in ATP by luciferase bioluminescence and in transferrin receptor by Western blot. Only transverse relaxation rates were significantly higher in iron-supplemented, MagA- and HF + LF-expressing cells compared to non-supplemented cells and the parental control. R2* provided the greatest absolute difference and R2' showed the greatest relative difference, consistent with the notion that R2' may be a more specific indicator of iron-based contrast than R2, as observed in brain tissue. Iron supplementation of MagA- and HF + LF-expressing cells increased the iron/zinc ratio approximately 20-fold, while transferrin receptor expression decreased approximately 10-fold. Level of ATP was similar across all cell types and culture conditions. These results highlight the potential of magnetotactic bacterial gene expression for improving MR contrast.
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Affiliation(s)
- Anindita Sengupta
- Imaging Program, Lawson Health Research InstituteLondon, ON, Canada
- Medical Biophysics, Western UniversityLondon, ON, Canada
- Collaborative Graduate Program in Molecular Imaging, Western UniversityLondon, ON, Canada
| | - Karina Quiaoit
- Imaging Program, Lawson Health Research InstituteLondon, ON, Canada
- Medical Biophysics, Western UniversityLondon, ON, Canada
- Collaborative Graduate Program in Molecular Imaging, Western UniversityLondon, ON, Canada
| | - R. Terry Thompson
- Imaging Program, Lawson Health Research InstituteLondon, ON, Canada
- Medical Biophysics, Western UniversityLondon, ON, Canada
| | - Frank S. Prato
- Imaging Program, Lawson Health Research InstituteLondon, ON, Canada
- Medical Biophysics, Western UniversityLondon, ON, Canada
| | - Neil Gelman
- Imaging Program, Lawson Health Research InstituteLondon, ON, Canada
- Medical Biophysics, Western UniversityLondon, ON, Canada
| | - Donna E. Goldhawk
- Imaging Program, Lawson Health Research InstituteLondon, ON, Canada
- Medical Biophysics, Western UniversityLondon, ON, Canada
- Collaborative Graduate Program in Molecular Imaging, Western UniversityLondon, ON, Canada
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11
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Wang W, Jing Y, He S, Wang JP, Zhai JP. Surface modification and bioconjugation of FeCo magnetic nanoparticles with proteins. Colloids Surf B Biointerfaces 2013; 117:449-56. [PMID: 24373979 DOI: 10.1016/j.colsurfb.2013.11.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 11/27/2013] [Accepted: 11/29/2013] [Indexed: 02/01/2023]
Abstract
Magnetic Fe70Co30 nanoparticles with a cubic shape and a mean size of 15±1.5 nm were fabricated using a magnetron-sputtering-based gas phase condensation deposition method. The particles had a high saturation magnetization of 220 emu/g, which is much higher than that of commercially available iron oxide nanoparticles. The FeCo nanoparticles were modified by 3-aminopropyltriethoxy silane and subsequently activated by glutaraldehyde, leading to successful attachment of aldehyde groups onto nanoparticle surfaces. Three proteins, namely streptavidin, PAPP-A antibody and Nectin-4 antibody, were immobilized on glutaraldehyde activated FeCo nanoparticles, and their loading levels were quantitatively evaluated. Our results show that loading capabilities are 95 μg of streptavidin, 128 μg of PAPP-A, and 125 μg of Nectin-4 antibody per milligram of FeCo nanoparticles, and that the three immobilized proteins retain their binding bioactivity. The protein-FeCo conjugates may find valuable applications involving magnetic separation and purification of proteins and cells, and the magnetic detection of biomolecules.
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Affiliation(s)
- Wei Wang
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Ying Jing
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Shihai He
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Jian-Ping Wang
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA.
| | - Jian-Ping Zhai
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China.
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12
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Kim E, Lee SG, Kim HC, Lee SJ, Baek CS, Choi ES, Jeong SW. Phosphocholine-Modified Magnetic Nanoparticles for Isolation of C-Reactive Protein from Human Serum. SEP SCI TECHNOL 2013. [DOI: 10.1080/01496395.2013.807516] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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13
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Zheng T, Fu JJ, Hu L, Qiu F, Hu M, Zhu JJ, Hua ZC, Wang H. Nanoarchitectured Electrochemical Cytosensors for Selective Detection of Leukemia Cells and Quantitative Evaluation of Death Receptor Expression on Cell Surfaces. Anal Chem 2013; 85:5609-16. [DOI: 10.1021/ac400994p] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Tingting Zheng
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
- Department of Chemistry and
Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
| | - Jia-Ju Fu
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Lihui Hu
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Fan Qiu
- State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing,
Jiangsu 210093, China
| | - Minjin Hu
- Changzhou High-Tech Research Institute of Nanjing University and Jiangsu TargetPharma Laboratories Inc., Changzhou, Jiangsu 213164, China
| | - Jun-Jie Zhu
- State Key Laboratory of Analytical
Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China
| | - Zi-Chun Hua
- State Key Laboratory of Pharmaceutical
Biotechnology, Nanjing University, Nanjing,
Jiangsu 210093, China
| | - Hui Wang
- Department of Chemistry and
Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, United States
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14
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Jahns AC, Rehm BHA. Relevant uses of surface proteins--display on self-organized biological structures. Microb Biotechnol 2011; 5:188-202. [PMID: 21906264 PMCID: PMC3815779 DOI: 10.1111/j.1751-7915.2011.00293.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Proteins are often found attached to surfaces of self‐assembling biological units such as whole microbial cells or subcellular structures, e.g. intracellular inclusions. In the last two decades surface proteins were identified that could serve as anchors for the display of foreign protein functions. Extensive protein engineering based on structure–function data enabled efficient display of technically and/or medically relevant protein functions. Small size, diversity of the anchor protein as well as support structure, genetic manipulability and controlled cultivation of phages, bacterial cells and yeasts contributed to the establishment of designed and specifically functionalized tools for applications as sensors, catalysis, biomedicine, vaccine development and library‐based screening technologies. Traditionally, phage display is employed for library screening but applications in biomedicine and vaccine development are also perceived. For some diagnostic purposes phages are even too small in size so other carrier materials where needed and gave way for cell and yeast display. Only recently, intracellular inclusions such as magnetosomes, polyhydroxyalkanoate granules and lipid bodies were conceived as stable subcellular structures enabling the display of foreign protein functions and showing potential as specific and tailor‐made devices for medical and biotechnological applications.
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Affiliation(s)
- Anika C Jahns
- Institute of Molecular BioSciences, Massey University, Private Bag 11222, Palmerston North, New Zealand
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15
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Single-step production of a recyclable nanobiocatalyst for organophosphate pesticides biodegradation using functionalized bacterial magnetosomes. PLoS One 2011; 6:e21442. [PMID: 21738665 PMCID: PMC3125186 DOI: 10.1371/journal.pone.0021442] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Accepted: 05/27/2011] [Indexed: 11/19/2022] Open
Abstract
Enzymes are versatile catalysts in laboratories and on an industrial scale; improving their immobilization would be beneficial to broadening their applicability and ensuring their (re)use. Lipid-coated nano-magnets produced by magnetotactic bacteria are suitable for a universally applicable single-step method of enzyme immobilization. By genetically functionalizing the membrane surrounding these magnetite particles with a phosphohydrolase, we engineered an easy-to-purify, robust and recyclable biocatalyst to degrade ethyl-paraoxon, a commonly used pesticide. For this, we genetically fused the opd gene from Flavobacterium sp. ATCC 27551 encoding a paraoxonase to mamC, an abundant protein of the magnetosome membrane in Magnetospirillum magneticum AMB-1. The MamC protein acts as an anchor for the paraoxonase to the magnetosome surface, thus producing magnetic nanoparticles displaying phosphohydrolase activity. Magnetosomes functionalized with Opd were easily recovered from genetically modified AMB-1 cells: after cellular disruption with a French press, the magnetic nanoparticles are purified using a commercially available magnetic separation system. The catalytic properties of the immobilized Opd were measured on ethyl-paraoxon hydrolysis: they are comparable with the purified enzyme, with K(m) (and k(cat)) values of 58 µM (and 178 s(-1)) and 43 µM (and 314 s(-1)) for the immobilized and purified enzyme respectively. The Opd, a metalloenzyme requiring a zinc cofactor, is thus properly matured in AMB-1. The recycling of the functionalized magnetosomes was investigated and their catalytic activity proved to be stable over repeated use for pesticide degradation. In this study, we demonstrate the easy production of functionalized magnetic nanoparticles with suitably genetically modified magnetotactic bacteria that are efficient as a reusable nanobiocatalyst for pesticides bioremediation in contaminated effluents.
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16
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Yao L, Xu S. Force-Induced Remnant Magnetization Spectroscopy for Specific Magnetic Imaging of Molecules. Angew Chem Int Ed Engl 2011; 50:4407-9. [DOI: 10.1002/anie.201007297] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 01/31/2011] [Indexed: 12/21/2022]
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17
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Yao L, Xu S. Force-Induced Remnant Magnetization Spectroscopy for Specific Magnetic Imaging of Molecules. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007297] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Song EQ, Hu J, Wen CY, Tian ZQ, Yu X, Zhang ZL, Shi YB, Pang DW. Fluorescent-magnetic-biotargeting multifunctional nanobioprobes for detecting and isolating multiple types of tumor cells. ACS NANO 2011; 5:761-70. [PMID: 21250650 PMCID: PMC3055982 DOI: 10.1021/nn1011336] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Fluorescent-magnetic-biotargeting multifunctional nanobioprobes (FMBMNs) have attracted great attention in recent years due to their increasing, important applications in biomedical research, clinical diagnosis, and biomedicine. We have previously developed such nanobioprobes for the detection and isolation of a single kind of tumor cells. Detection and isolation of multiple tumor markers or tumor cells from complex samples sensitively and with high efficiency is critical for the early diagnosis of tumors, especially malignant tumors or cancers, which will improve clinical diagnosis outcomes and help to select effective treatment approaches. Here, we expanded the application of the monoclonal antibody (mAb)-coupled FMBMNs for multiplexed assays. Multiple types of cancer cells, such as leukemia cells and prostate cancer cells, were detected and collected from mixed samples within 25 min by using a magnet and an ordinary fluorescence microscope. The capture efficiencies of mAb-coupled FMBMNs for the above-mentioned two types of cells were 96% and 97%, respectively. Furthermore, by using the mAb-coupled FMBMNs, specific and sensitive detection and rapid separation of a small number of spiked leukemia cells and prostate cancer cells in a large population of cultured normal cells (about 0.01% were tumor cells) were achieved simply and inexpensively without any sample pretreatment before cell analysis. Therefore, mAb-coupled multicolor FMBMNs may be used for very sensitive detection and rapid isolation of multiple cancer cells in biomedical research and medical diagnostics.
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Affiliation(s)
- Er-Qun Song
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), and State Key Laboratory of Virology, Wuhan University, Wuhan, People's Republic of China
- Key Laboratory of Luminescence and Real-Time Analysis of the Ministry of Education, College of Pharmaceutical Sciences, Southwest University, Chongqing, People's Republic of China
| | - Jun Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), and State Key Laboratory of Virology, Wuhan University, Wuhan, People's Republic of China
| | - Cong-Ying Wen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), and State Key Laboratory of Virology, Wuhan University, Wuhan, People's Republic of China
| | - Zhi-Quan Tian
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), and State Key Laboratory of Virology, Wuhan University, Wuhan, People's Republic of China
| | - Xu Yu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), and State Key Laboratory of Virology, Wuhan University, Wuhan, People's Republic of China
| | - Zhi-Ling Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), and State Key Laboratory of Virology, Wuhan University, Wuhan, People's Republic of China
| | - Yun-Bo Shi
- Section on Molecular Morphogenesis, Program on Cell Regulation and Metabolism, National Institute of Child Health and Human Development, NIH, Bethesda, MD
| | - Dai-Wen Pang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Research Center for Nanobiology and Nanomedicine (MOE 985 Innovative Platform), and State Key Laboratory of Virology, Wuhan University, Wuhan, People's Republic of China
- Address correspondence to this author at: Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, and State Key Laboratory of Virology, Wuhan University, Wuhan 430072, P. R. China. Fax: +86-27-6875-4067;
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Li A, Zhang H, Zhang X, Wang Q, Tian J, Li Y, Li J. Rapid separation and immunoassay for low levels of Salmonella in foods using magnetosome-antibody complex and real-time fluorescence quantitative PCR. J Sep Sci 2010; 33:3437-43. [DOI: 10.1002/jssc.201000441] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Yoshino T, Shimojo A, Maeda Y, Matsunaga T. Inducible expression of transmembrane proteins on bacterial magnetic particles in Magnetospirillum magneticum AMB-1. Appl Environ Microbiol 2010; 76:1152-7. [PMID: 20038711 PMCID: PMC2820942 DOI: 10.1128/aem.01755-09] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2009] [Accepted: 12/12/2009] [Indexed: 11/20/2022] Open
Abstract
Bacterial magnetic particles (BacMPs) produced by the magnetotactic bacterium Magnetospirillum magneticum AMB-1 are used for a variety of biomedical applications. In particular, the lipid bilayer surrounding BacMPs has been reported to be amenable to the insertion of recombinant transmembrane proteins; however, the display of transmembrane proteins in BacMP membranes remains a technical challenge due to the cytotoxic effects of the proteins when they are overexpressed in bacterial cells. In this study, a tetracycline-inducible expression system was developed to display transmembrane proteins on BacMPs. The expression and localization of the target proteins were confirmed using luciferase and green fluorescent protein as reporter proteins. Gene expression was suppressed in the absence of anhydrotetracycline, and the level of protein expression could be controlled by modulating the concentration of the inducer molecule. This system was implemented to obtain the expression of the tetraspanin CD81. The truncated form of CD81 including the ligand binding site was successfully displayed at the surface of BacMPs by using Mms13 as an anchor protein and was shown to bind the hepatitis C virus envelope protein E2. These results suggest that the tetracycline-inducible expression system described here will be a useful tool for the expression and display of transmembrane proteins in the membranes of BacMPs.
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Affiliation(s)
- Tomoko Yoshino
- Department of Biotechnology, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan.
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Yoshino T, Matsunaga T. [Protein display onto nano-sized bacterial magnetic particles for receptor analysis]. YAKUGAKU ZASSHI 2009; 129:1319-25. [PMID: 19881203 DOI: 10.1248/yakushi.129.1319] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Magnetic particles offer vast potential in ushering new techniques, especially in biomedical applications, as they can be easily manipulated by magnetic force. Magnetotactic bacteria synthesize nano-sized biomagnetites, otherwise known as bacterial magnetic particles (BacMPs) that are individually enveloped by a lipid bilayer membrane. BacMPs are ultrafine magnetite crystals (50-100 nm diameters) with uniform morphology produced by Magnetospirillum magneticum AMB-1. Based on our elucidations on the molecular mechanism of BacMP formation in M. magneticum AMB-1, functional nanomaterials have been designed. Through genetic engineering, functional proteins such as enzymes, antibodies, and receptors were successfully displayed onto BacMPs. Here, display techniques of functional proteins onto nano-sized BacMPs and its applications to ligand binding assays were described. Dopamine receptor, which is a member of G protein-coupled receptors, was successfully displayed onto BacMPs. This system makes possible the convenient acquisition of the native conformation of membrane proteins without the need for detergent solubilization, purification and reconstitution after cell disruption. Furthermore, estrogen receptor, which is one of nuclear receptors, was also displayed onto BacMPs. The assay using BacMPs displaying estrogen receptor could discriminate full agonists, partial agonists, or antagonists. The elucidation of the mechanism of BacMP synthesis has provided a roadmap for the design of novel nano-biomaterials that would play a useful role in multidisciplinary fields.
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Affiliation(s)
- Tomoko Yoshino
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo, Japan.
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In vivo display of a multisubunit enzyme complex on biogenic magnetic nanoparticles. Appl Environ Microbiol 2009; 75:7734-8. [PMID: 19837839 DOI: 10.1128/aem.01640-09] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Magnetosomes are unique bacterial organelles comprising membrane-enveloped magnetic crystals produced by magnetotactic bacteria. Because of several desirable chemical and physical properties, magnetosomes would be ideal scaffolds on which to display highly complicated biological complexes artificially. As a model experiment for the functional expression of a multisubunit complex on magnetosomes, we examined the display of a chimeric bacterial RNase P enzyme composed of the protein subunit (C5) of Escherichia coli RNase P and the endogenous RNA subunit by expressing a translational fusion of C5 with MamC, a known magnetosome protein, in the magnetotactic bacterium Magnetospirillum gryphiswaldense. As intended, the purified C5 fusion magnetosomes, but not wild-type magnetosomes, showed apparent RNase P activity and the association of a typical bacterial RNase P RNA. Our results demonstrate for the first time that magnetosomes can be employed as scaffolds for the display of multisubunit complexes.
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Maeda Y, Yoshino T, Matsunaga T. Novel nanocomposites consisting of in vivo-biotinylated bacterial magnetic particles and quantum dots for magnetic separation and fluorescent labeling of cancer cells. ACTA ACUST UNITED AC 2009. [DOI: 10.1039/b900693a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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