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Ramezani Khorsand F, Hakimi Naeini S, Molakarimi M, Dehnavi E, Zeinoddini M, Sajedi RH. Surface display provides an efficient expression system for production of recombinant proteins and bacterial whole cell biosensor in E. coli. Anal Biochem 2024; 694:115599. [PMID: 38964699 DOI: 10.1016/j.ab.2024.115599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 06/14/2024] [Accepted: 07/01/2024] [Indexed: 07/06/2024]
Abstract
A novel bacterial display vector based on Escherichia coli has been engineered for recombinant protein production and purification. Accordingly, a construct harboring the enhanced green fluorescent protein (EGFP) and the ice nucleation protein (INP) was designed to produce EGFP via the surface display in E. coli cells. The fusion EGFP-expressed cells were then investigated using fluorescence measurement, SDS- and native-PAGE before and after TEV protease digestion. The displayed EGFP was obtained with a recovery of 57.7 % as a single band on SDS-PAGE. Next, the efficiency of the cell surface display for mutant EGFP (EGFP S202H/Q204H) was examined in sensing copper ions. Under optimal conditions, a satisfactorily linear range for copper ions concentrations up to 10 nM with a detection limit of 0.073 nM was obtained for cell-displayed mutant EGFP (mEGFP). In the presence of bacterial cell lysates and purified mEGFP, response to copper was linear in the 2-10 nM and 0.1-2 μM concentration range, respectively, with a 1.3 nM and 0.14 μM limit of detection. The sensitivity of bacterial cell lysates and surface-displayed mEGFP in the detection of copper ions is higher than the purified mEGFP.
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Affiliation(s)
- Fereshteh Ramezani Khorsand
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, 14115-154, Iran.
| | - Saghi Hakimi Naeini
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, 14115-154, Iran.
| | - Maryam Molakarimi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, 14115-154, Iran.
| | - Ehsan Dehnavi
- Gene Transfer Pioneers (GTP) Research Group, Incubation Center of Pharmaceutical Technologies, Shahid Beheshti University of Medical Science, Tehran, Iran.
| | - Mehdi Zeinoddini
- Department of Bioscience and Biotechnology, Malek Ashtar University of Technology, Tehran, Iran.
| | - Reza H Sajedi
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, 14115-154, Iran.
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2
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Rodríguez-Mejía JL, Hidalgo-Manzano IA, Muriel-Millán LF, Rivera-Gomez N, Sahonero-Canavesi DX, Castillo E, Pardo-López L. A Novel Thermo-Alkaline Stable GDSL/SGNH Esterase with Broad Substrate Specificity from a Deep-Sea Pseudomonas sp. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2024; 26:447-459. [PMID: 38691271 PMCID: PMC11178605 DOI: 10.1007/s10126-024-10308-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 04/03/2024] [Indexed: 05/03/2024]
Abstract
Marine environments harbor a plethora of microorganisms that represent a valuable source of new biomolecules of biotechnological interest. In particular, enzymes from marine bacteria exhibit unique properties due to their high catalytic activity under various stressful and fluctuating conditions, such as temperature, pH, and salinity, fluctuations which are common during several industrial processes. In this study, we report a new esterase (EstGoM) from a marine Pseudomonas sp. isolated at a depth of 1000 m in the Gulf of Mexico. Bioinformatic analyses revealed that EstGoM is an autotransporter esterase (type Va) and belongs to the lipolytic family II, forming a new subgroup. The purified recombinant EstGoM, with a molecular mass of 67.4 kDa, showed the highest hydrolytic activity with p-nitrophenyl octanoate (p-NP C8), although it was also active against p-NP C4, C5, C10, and C12. The optimum pH and temperature for EstGoM were 9 and 60 °C, respectively, but it retained more than 50% of its activity over the pH range of 7-11 and temperature range of 10-75 °C. In addition, EstGoM was tolerant of up to 1 M NaCl and resistant to the presence of several metal ions, detergents, and chemical reagents, such as EDTA and β-mercaptoethanol. The enzymatic properties of EstGoM make it a potential candidate for several industrial applications.
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Affiliation(s)
- José Luis Rodríguez-Mejía
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, México
- Edificio Dr. Carlos Méndez, Centro Universitario de Investigaciones Biomédicas, Universidad de Colima, Campus Central Colima; Avenida 25 de Julio #965, Col. V. Sn. Sebastián, C.P. 28045, Colima, Colima, México
| | - Itzel Anahí Hidalgo-Manzano
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, México
| | - Luis Felipe Muriel-Millán
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, México
| | - Nancy Rivera-Gomez
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, México
- IPN: CICATA Unidad Morelos del Instituto Politécnico Nacional, Blvd. de La Tecnologia 1036-P 2/2, 62790, Atlacholoaya, Morelos, México
| | - Diana X Sahonero-Canavesi
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, México
- Department of Marine Microbiology and Biogeochemistry, NIOZ Royal Netherlands Institute for Sea Research, 1797AB Den Burg, P.O. Box 59, Texel, Netherlands
| | - Edmundo Castillo
- Departamento de Ingeniería Celular y Biocatálisis, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, México.
| | - Liliana Pardo-López
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, México.
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3
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Wojciechowski MN, Schreiber S, Jose J. A Novel Flow Cytometry-Based Assay for the Identification of HCN4 CNBD Ligands. Pharmaceuticals (Basel) 2023; 16:ph16050710. [PMID: 37242492 DOI: 10.3390/ph16050710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/25/2023] [Accepted: 05/03/2023] [Indexed: 05/28/2023] Open
Abstract
Hyperpolarization-activated and cyclic nucleotide-gated (HCN) channels are promising therapeutic targets because of their association with the genesis of several diseases. The identification of selective compounds that alter cAMP-induced ion channel modulation by binding to the cyclic nucleotide-binding domain (CNBD) will facilitate HCN channel-specific drug development. In this study, a fast and protein purification-free ligand-binding approach with a surface-displayed HCN4 C-Linker-CNBD on E. coli is presented. 8-Fluo-cAMP ligand binding was monitored by single-cell analysis via flow cytometry, and a Kd-value of 173 ± 46 nM was determined. The Kd value was confirmed by ligand depletion analysis and equilibrium state measurements. Applying increasing concentrations of cAMP led to a concentration-dependent decrease in fluorescence intensity, indicating a displacement of 8-Fluo-cAMP. A Ki-value of 8.5 ± 2 µM was determined. The linear relationship of IC50 values obtained for cAMP as a function of ligand concentration confirmed the competitive binding mode: IC50: 13 ± 2 µM/16 ± 3 µM/23 ± 1 µM/27 ± 1 µM for 50 nM/150 nM/250 nM/500 nM 8-Fluo-cAMP. A similar competitive mode of binding was confirmed for 7-CH-cAMP, and an IC50 value of 230 ± 41 nM and a Ki of 159 ± 29 nM were determined. Two established drugs were tested in the assay. Ivabradine, an approved HCN channel pore blocker and gabapentin, is known to bind to HCN4 channels in preference to other isoforms with an unknown mode of action. As expected, ivabradine had no impact on ligand binding. In addition, gabapentin had no influence on 8-Fluo-cAMP's binding to HCN4-CNBD. This is the first indication that gabapentin is not interacting with this part of the HCN4 channel. The ligand-binding assay as described can be used to determine binding constants for ligands such as cAMP and derivatives. It could also be applied for the identification of new ligands binding to the HCN4-CNBD.
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Affiliation(s)
- Magdalena N Wojciechowski
- University of Münster, Institute of Pharmaceutical and Medicinal Chemistry, Pharmacampus, 48149 Münster, Germany
| | - Sebastian Schreiber
- University of Münster, Institute of Pharmaceutical and Medicinal Chemistry, Pharmacampus, 48149 Münster, Germany
| | - Joachim Jose
- University of Münster, Institute of Pharmaceutical and Medicinal Chemistry, Pharmacampus, 48149 Münster, Germany
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Kim SG, Kim J, Kim MY, Park JM, Jose J, Park M. Autodisplay of streptococcal protein G for construction of an orientation-controlled immunoaffinity layer. Analyst 2023; 148:742-751. [PMID: 36692311 DOI: 10.1039/d2an01753a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An immunoaffinity layer with orientation-controlled antibodies was constructed to express streptococcal protein G in Escherichia coli cells using autodisplay technology. The sequence of protein G, a specific IgG-binding protein, was inserted into the autodisplay vector using recombinant technology and the constructed plasmid vector was transformed into E. coli cells. Protein G was confirmed to be autodisplayed with a high density of 2 × 105 copies per cell by SDS-PAGE analysis, and its IgG-binding affinity was confirmed by fluorescence microscopy. Autodisplayed protein G showed higher affinity than the IgG-binding Z-domain for goat IgG. Immunoassays based on E. coli cells were established to detect horseradish peroxidase (HRP) and C-reactive protein (CRP). Protein G autodisplaying E. coli cells were utilized as a solid support and immunoassays showed improved sensitivity by orientation control of autodisplayed protein G. The outer membrane (OM) of protein G autodisplaying E. coli was isolated and layered to construct an immunoaffinity layer. The OM was coated on a microplate to perform the immunoassays, which showed limits of detection of 5 and 0.2 ng mL-1 for HRP and CRP, respectively. An OM layer with autodisplayed protein G was applied as the immunoaffinity layer of a surface plasmon resonance (SPR) biosensor. After CRP detection, the SPR responses showed good linearity, with an R2 value of 0.99. The immunoaffinity layer with orientation control by autodisplayed protein G was confirmed to be applicable in immunoassays and immunosensors to improve sensitivity.
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Affiliation(s)
- Seong Gi Kim
- Major in Materials Science and Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea. .,Integrative Materials Research Institute, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea.,Interdisciplinary Program of Nano-Medical Device Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea
| | - JeeYoung Kim
- Major in Materials Science and Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea. .,Integrative Materials Research Institute, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea.,Interdisciplinary Program of Nano-Medical Device Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea
| | - Mi Yeon Kim
- Major in Materials Science and Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea. .,Integrative Materials Research Institute, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea.,Interdisciplinary Program of Nano-Medical Device Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea
| | - Jong-Min Park
- Major in Materials Science and Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea. .,Integrative Materials Research Institute, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea.,Interdisciplinary Program of Nano-Medical Device Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea
| | - Joachim Jose
- Institute of Pharmaceutical and Medicinal Chemistry, PharmaCampus, Westfälische Wilhelms-Universität, 48 Corrensstraβe, Münster, 48149, Germany
| | - Min Park
- Major in Materials Science and Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea. .,Integrative Materials Research Institute, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea.,Interdisciplinary Program of Nano-Medical Device Engineering, Hallym University, 1 Hallymdaehak-gil, Chuncheon-si, Gangwon-do, 24252, Republic of Korea
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Microbial biosensor for Salmonella using anti-bacterial antibodies isolated from human serum. Enzyme Microb Technol 2020; 144:109721. [PMID: 33541568 DOI: 10.1016/j.enzmictec.2020.109721] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 11/24/2020] [Accepted: 11/26/2020] [Indexed: 11/22/2022]
Abstract
In this work, we present a novel microbial biosensor for Salmonella based on impedance spectrometry by using isolated antibodies against a specific bacterial strain from human serum. Anti-Salmonella (or BL21(DE3)) antibodies were isolated from human serum using S. enteritidis (or BL21(DE3)) and the mutant strain ClearColi. After the purification steps, the purification yield of the antibodies was calculated to be 0.2 %. From the FACS analysis, the isolated anti-Salmonella antibodies were estimated to have more than 6-fold higher binding affinity for S. enteritidis compared to antibodies against other kinds of Gram-negative bacterial strains, including HB101, ClearColi, JM110, DH5α, and BL21(DE3). Finally, the anti-Salmonella antibodies isolated herein were used for bacterial detection using electrochemical biosensors based on impedance spectrometry and the Rct value of the antibodies was estimated for S. enteritidis from the Nyquist plot. The limit of detection of the isolated anti-Salmonella antibodies was estimated to be 1.0 × 103 cells/mL for S. enteritidis and 1.0 × 106 cells/mL for BL21(DE3), respectively.
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6
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Lee GY, Bong JH, Jung J, Kang MJ, Jose J, Pyun JC. Application of a thermophoretic immunoassay in the diagnosis of lupus using outer membrane particles from E. coli. Biosens Bioelectron 2020; 156:112110. [PMID: 32174550 DOI: 10.1016/j.bios.2020.112110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 02/02/2020] [Accepted: 02/18/2020] [Indexed: 10/24/2022]
Abstract
Thermophoresis is the physical diffusion of molecules from hot to cold induced by a thermal gradient. Thermophoresis has been used to evaluate the interaction of biomolecules in solution. In this study, the outer membrane from E. coli was isolated and used to produce OM particles with a diameter of approximately 100 nm. These prepared OM particles were applied in a thermophoretic immunoassay. First, outer membrane (OM) particles with lipopolysaccharides (LPS) and anti-LPS antibodies were used as a model to demonstrate proof of concept and the difference in E. coli thermophoresis was explained by the changes in the molecular surface area (A) and effective charge (σeff). The hydrodynamic size of the molecules was measured as a changing parameter, molecular surface area (A), by dynamic laser scattering (DLS), and the zeta potential was measured as a changing parameter of effective charge (σeff) and then evaluated by the Soret equation. Using the hydrodynamic size and zeta potential values, the interaction between the antigen (OM particle with LPS) and antibody (anti-LPS antibodies) could be monitored and the results were fitted to the thermophoretic immunoassay using the Soret coefficient and equation. Finally, this OM-based immunoassay was applied to the medical diagnosis of systemic lupus erythematosus. Here, OM particles with Ro and La proteins were used to analyze the autoantibodies in patient and control sera. Thermophoretic immunoassay results were also compared to the fitted analysis using hydrodynamic size and zeta potential values and the Soret coefficient and equation.
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Affiliation(s)
- Ga-Yeon Lee
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, South Korea
| | - Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, South Korea
| | - Jaeyong Jung
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, South Korea
| | - Min-Jung Kang
- Korea Institute of Science and Technology, Seoul, South Korea
| | - Joachim Jose
- Institute of Pharmaceutical and Medical Chemistry, University of Münster, Münster, Germany
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, South Korea.
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7
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Surface Display Technology for Biosensor Applications: A Review. SENSORS 2020; 20:s20102775. [PMID: 32414189 PMCID: PMC7294428 DOI: 10.3390/s20102775] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/24/2020] [Accepted: 05/11/2020] [Indexed: 02/06/2023]
Abstract
Surface display is a recombinant technology that expresses target proteins on cell membranes and can be applied to almost all types of biological entities from viruses to mammalian cells. This technique has been used for various biotechnical and biomedical applications such as drug screening, biocatalysts, library screening, quantitative assays, and biosensors. In this review, the use of surface display technology in biosensor applications is discussed. In detail, phage display, bacterial surface display of Gram-negative and Gram-positive bacteria, and eukaryotic yeast cell surface display systems are presented. The review describes the advantages of surface display systems for biosensor applications and summarizes the applications of surface displays to biosensors.
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8
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Orientation Control of the Molecular Recognition Layer for Improved Sensitivity: a Review. BIOCHIP JOURNAL 2019. [DOI: 10.1007/s13206-019-3103-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Fluorescence immunoassay of E. coli using anti-lipopolysaccharide antibodies isolated from human serum. Biosens Bioelectron 2019; 126:518-528. [DOI: 10.1016/j.bios.2018.10.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 10/07/2018] [Accepted: 10/17/2018] [Indexed: 12/21/2022]
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10
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Bong JH, Song HW, Kim TH, Kang MJ, Jose J, Pyun JC. Refolding of autodisplayed anti-NEF scFv through oxidation with glutathione for immunosensors. Biosens Bioelectron 2018; 102:600-609. [DOI: 10.1016/j.bios.2017.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/12/2017] [Accepted: 12/05/2017] [Indexed: 10/18/2022]
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Park M, Pyun JC, Jose J. Orientation and density control of proteins on solid matters by outer membrane coating: Analytical and diagnostic applications. J Pharm Biomed Anal 2017; 147:174-184. [PMID: 28797956 DOI: 10.1016/j.jpba.2017.07.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 12/11/2022]
Abstract
Autodisplay is an expression system for the display of recombinant proteins on the outer membrane (OM) of gram negative bacteria and has been developed for translocation studies, whole cell biocatalysis, bioremediation, inhibitor screening, and enzyme refolding. Recently, affinity proteins such as IgG-binding Z-domains and biotin-binding streptavidin have been autodisplayed on the OM of Escherichia coli for analytical and biomedical applications. The secretion mechanism of the autodisplay system was used and orientation and density control of these affinity proteins were determined. Affinity protein-autodisplaying E. coli cells have been used to coat solid supports in immunoassays. For this purpose, the OM of autodisplayed E. coli cells was separated and isolated by the aid of detergents. The structure of the resulting OM liposomes as well as their physico-chemical parameters, were analyzed. OM liposomes were used subsequently for coating various solid matters including microplates and biosensor transducer surfaces and the formation of OM layers were monitored. OM layer formation on solid matters was shown to increase the sensitivity of immunoassays and biosensors. In this review, analytical and diagnostic applications are described in particular concerning orientation and density control of autodisplayed affinity proteins.
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Affiliation(s)
- Min Park
- Integrative Materials Research Institute, Hallym University, Chuncheon-si, Republic of Korea; Department of Materials Science and Engineering, Hallym University, Chuncheon-si, Republic of Korea
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, Seoul, Republic of Korea
| | - Joachim Jose
- Institute of Pharmaceutical and Medicinal Chemistry, PharmaCampus, Westfälische Wilhelms-Universität, Münster, Germany.
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Lan WJ, Lin YM, Men ZH, Yan L. Surface-decorated S. cerevisiae for flow cytometric array immunoassay. Anal Bioanal Chem 2017; 409:5259-5267. [DOI: 10.1007/s00216-017-0470-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 05/24/2017] [Accepted: 06/14/2017] [Indexed: 11/28/2022]
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13
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Yoo G, Dilkaute C, Bong JH, Song HW, Lee M, Kang MJ, Jose J, Pyun JC. Autodisplay of the La/SSB protein on LPS-free E. coli for the diagnosis of Sjögren's syndrome. Enzyme Microb Technol 2017; 100:1-10. [PMID: 28284305 DOI: 10.1016/j.enzmictec.2017.01.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 01/15/2017] [Accepted: 01/20/2017] [Indexed: 11/20/2022]
Abstract
The objective of this study was to present an immunoassay for the diagnosis of Sjögren's syndrome based on the autodisplayed La/SSB protein on the outer membrane of intact E. coli (strain UT-5600) and LPS-free E. coli (ClearColi™). As the first step, an autodisplay vector (pCK002) was transfected into intact E. coli and LPS-free E. coli for comparison of efficiency of autdisplay of La/SSB. The maximal level of La/SSB expression was estimated to be similar for LPS-free E. coli and intact E. coli at different optimal induction periods. Intact E. coli was found to grow twofold faster than LPS-free E. coli, and the maximal level of expression for LPS-free E. coli was obtained with a longer induction period. When the zeta potential was measured, both intact E. coli and LPS-free E. coli showed negative values, and the autodisplay of negatively charged La/SSB protein (pI<7) on the outer membrane of intact E. coli and LPS-free E. coli resulted in a slight change in zeta potential values. E. coli with autodisplayed La/SSB protein was used for an immunoassay of anti-La/SSB antibodies for the diagnosis of Sjögren's syndrome. The surface of E. coli with the autodisplayed antigen was modified with rabbit serum and papain to prevent false positive signals because of nonspecific binding of unrelated antibodies from human serum. LPS-free E. coli with autodisplayed La/SSB protein yielded sensitivity and selectivity of 81.6% and 78.6%, respectively. The Bland-Altman test showed that the immunoassays based on LPS-free E. coli and intact E. coli with autodisplayed La/SSB protein were statistically equivalent to a clinical immunoassay for detection of anti-La/SSB antibodies (confidence coefficient 95%).
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Affiliation(s)
- Gu Yoo
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea
| | - Carina Dilkaute
- Institute of Pharmaceutical and Medical Chemistry, University of Muenster, Muenster, Germany
| | - Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea
| | - Hyun-Woo Song
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea
| | - Misu Lee
- College of Life Science and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Min-Jung Kang
- Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Joachim Jose
- Institute of Pharmaceutical and Medical Chemistry, University of Muenster, Muenster, Germany
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea.
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14
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Chang SY, Bong JH, Yoo G, Lee M, Kang MJ, Jose J, Pyun JC. Activity control of autodisplayed proteins on the same outer membrane layer of E. coli by using Z-domain/streptavidin/and lipase/foldase systems. Enzyme Microb Technol 2017; 96:85-95. [DOI: 10.1016/j.enzmictec.2016.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 09/29/2016] [Accepted: 10/01/2016] [Indexed: 11/26/2022]
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15
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Pyun JC, Jose J, Park M. Development of a wash-free immunoassay using Escherichia coli cells with autodisplayed Z-domains. Analyst 2017; 142:1720-1728. [DOI: 10.1039/c6an02386j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Escherichia coli cells that autodisplay Z-domains have been used to improve the sensitivity and limit of detection (LOD) of immunoassays by controlling antibody orientation.
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Affiliation(s)
- Jae-Chul Pyun
- Department of Materials Science and Engineering
- Yonsei University
- Seoul
- Korea
| | - Joachim Jose
- Institute of Pharmaceutical and Medical Chemistry
- University of Münster
- Münster
- Germany
| | - Min Park
- Integrative Materials Research Institute
- Hallym University
- Chuncheon-si
- Korea
- Department of Materials Science and Engineering
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Kim DH, Bong JH, Yoo G, Chang SY, Chang YW, Kang MJ, Jose J, Pyun JC. A magnetite suspension-based washing method for immunoassays using Escherichia coli cells with autodisplayed Z-domains. Enzyme Microb Technol 2016; 92:1-8. [PMID: 27542738 DOI: 10.1016/j.enzmictec.2016.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/07/2016] [Accepted: 06/08/2016] [Indexed: 10/21/2022]
Abstract
Escherichia coli cells with autodisplayed Z-domains have been used for immunoassays of specific target analytes. In this study, a magnetite suspension was used for the washing step in immunoassays of E. coli cells with autodisplayed Z-domains. This approach enhanced the washing conditions for these immunoassays by determining (1) the optimal concentration of the magnetite suspension, (2) the capacity of the magnetite suspension-based washing method to recover E. coli cells, and (3) the level at which the activity of autodisplayed Z-domains is maintained. In immunoassays of C-reactive protein (CRP), the immunoassay incorporating the magnetite suspension-based washing method showed a sensitivity and limit of detection considerably higher than those of the conventional centrifugation-based washing method. The results indicated that immunoassays incorporating the magnetite suspension-based washing method are effective for medical diagnoses based on CRP assay.
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Affiliation(s)
- Do-Hoon Kim
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea
| | - Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea
| | - Gu Yoo
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea
| | - Seo-Yoon Chang
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea
| | - Young Wook Chang
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea
| | - Min-Jung Kang
- Korea Institute of Science and Technology, Seoul, Korea
| | | | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul, 120-749, Korea.
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17
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Cheok HS, Jaworski J. Virus-based assay for antigen detection using infective growth as signal transduction mechanism. Biosens Bioelectron 2016; 77:131-6. [PMID: 26402590 DOI: 10.1016/j.bios.2015.09.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/10/2015] [Accepted: 09/11/2015] [Indexed: 10/23/2022]
Abstract
Viruses have the ability to infect and thereby confer new phenotypes on host cells. E. coli, for example, if infected by viruses containing antibiotic resistance genes, can benefit by surviving in the presence of the corresponding antibiotics to grow into colonies observable by the naked eye. Using this concept as a signal transduction mechanism for our immunoassay, we have engineered ampicillin resistant virions to display a dimer of the z domain from Protein A. This zz-domain selectively binds to the conserved heavy domain of IgG across various species. As commercially available antibodies are in no short supply, this engineered virion can be used modularly with existing antibodies for converting the presence of target antigen into a visually detectable colony forming unit. Here we demonstrate that this scheme for zz-phage transfection and selective growth of infected E. coli can facilitate sub-nanomolar detection limits for target antigen. Moreover, this phage infectivity assay works over a range of concentrations competitive with existing ELISA techniques. Because this system is derived from self-regenerating components (i.e., virus and bacteria) and furthermore obviates the need for chromogenic substrates or spectroscopic equipment, we find it particularly suitable for use in regions where cost effective detection is a necessity.
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Affiliation(s)
- Hui Shan Cheok
- Department of Chemical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea
| | - Justyn Jaworski
- Department of Chemical Engineering, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea; Institute of Nanoscience and Technology, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 133-791, Republic of Korea.
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18
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Co-autodisplay of Z-domains and bovine caseins on the outer membrane of E. coli. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:3126-33. [DOI: 10.1016/j.bbamem.2015.09.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 09/07/2015] [Accepted: 09/18/2015] [Indexed: 11/21/2022]
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Yoo G, Bong JH, Park M, Jose J, Kang MJ, Pyun JC. Electrochemical analysis of autodisplayed adrenodoxin (Adx) on the outer membrane of E. coli. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:1509-13. [PMID: 25858110 DOI: 10.1016/j.bbamem.2015.03.037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Revised: 03/29/2015] [Accepted: 03/30/2015] [Indexed: 11/19/2022]
Abstract
In this work, adrenodoxin (Adx) was expressed on the outer membrane of E. coli by autodisplay and then the iron-sulfur cluster was incorporated into apo-Adx by an anaerobic reconstitution process. For the determination of the redox potentials of the iron-sulfur clusters of the autodisplayed Adx, E. coli cells with autodisplayed Adx were immobilized on a gold electrode modified with a self-assembled monolayer of mercaptoundecanoic acid (MUA). From the repeated cyclic voltammetry (CV) analysis, the E. coli (10mM HEPES buffer, pH7.0) with autodisplayed Adx showed significant changes in shape with an oxidation peak at +0.4V (vs. Ag/AgCl) and a reduction peak at -0.3V (vs. Ag/AgCl) after the reconstitution process for the incorporation of the iron-sulfur cluster. From the repeated CV analysis in the reduction and oxidation potential ranges, the iron-sulfur clusters of the autodisplayed Adx were observed to undergo reversible redox reactions via direct electron transfer to the MUA-modified gold electrode.
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Affiliation(s)
- Gu Yoo
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seo-dae-mun-gu, Seoul, 120-749, Republic of Korea
| | - Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seo-dae-mun-gu, Seoul, 120-749, Republic of Korea
| | - Min Park
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seo-dae-mun-gu, Seoul, 120-749, Republic of Korea; Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Joachim Jose
- Institute of Pharmaceutical and Medical Chemistry, University of Muenster, Muenster, Germany
| | - Min-Jung Kang
- Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-ro, Seo-dae-mun-gu, Seoul, 120-749, Republic of Korea.
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20
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Park M, Yoo G, Bong JH, Jose J, Kang MJ, Pyun JC. Isolation and characterization of the outer membrane of Escherichia coli with autodisplayed Z-domains. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2015; 1848:842-7. [DOI: 10.1016/j.bbamem.2014.12.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/03/2014] [Accepted: 12/09/2014] [Indexed: 10/24/2022]
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21
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Fleetwood F, Andersson KG, Ståhl S, Löfblom J. An engineered autotransporter-based surface expression vector enables efficient display of Affibody molecules on OmpT-negative E. coli as well as protease-mediated secretion in OmpT-positive strains. Microb Cell Fact 2014; 13:179. [PMID: 25547008 PMCID: PMC4304625 DOI: 10.1186/s12934-014-0179-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 12/09/2014] [Indexed: 12/20/2022] Open
Abstract
Background Cell display technologies (e.g. bacterial display) are attractive in directed evolution as they provide the option to use flow-cytometric cell sorting for selection from combinatorial libraries. The aim of this study was to engineer and investigate an expression vector system with dual functionalities: i) recombinant display of Affibody libraries on Escherichia coli for directed evolution and ii) small scale secreted production of candidate affinity proteins, allowing initial downstream characterizations prior to subcloning. Autotransporters form a class of surface proteins in Gram-negative bacteria that have potential for efficient translocation and tethering of recombinant passenger proteins to the outer membrane. We engineered a bacterial display vector based on the E. coli AIDA-I autotransporter for anchoring to the bacterial surface. Potential advantages of employing autotransporters combined with E. coli as host include: high surface expression level, high transformation frequency, alternative promoter systems available, efficient translocation to the outer membrane and tolerance for large multi-domain passenger proteins. Results The new vector was designed to comprise an expression cassette encoding for an Affibody molecule, three albumin binding domains for monitoring of surface expression levels, an Outer membrane Protease T (OmpT) recognition site for potential protease-mediated secretion of displayed affinity proteins and a histidine-tag for purification. A panel of vectors with different promoters were generated and evaluated, and suitable cultivation conditions were investigated. The results demonstrated a high surface expression level of the different evaluated Affibody molecules, high correlation between target binding and surface expression level, high signal-to-background ratio, efficient secretion and purification of binders in OmpT-positive hosts as well as tight regulation of surface expression for the titratable promoters. Importantly, a mock selection using FACS from a 1:100,000 background yielded around 20,000-fold enrichment in a single round and high viability of the isolated bacteria after sorting. Conclusions The new expression vectors are promising for combinatorial engineering of Affibody molecules and the strategy for small-scale production of soluble recombinant proteins has the potential to increase throughput of the entire discovery process. Electronic supplementary material The online version of this article (doi:10.1186/s12934-014-0179-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Filippa Fleetwood
- Division of Protein technology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden.
| | - Ken G Andersson
- Division of Protein technology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden.
| | - Stefan Ståhl
- Division of Protein technology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden.
| | - John Löfblom
- Division of Protein technology, School of Biotechnology, KTH Royal Institute of Technology, Stockholm, Sweden.
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Bong JH, Yoo G, Park M, Kang MJ, Jose J, Pyun JC. Ultrasonic isolation of the outer membrane of Escherichia coli with autodisplayed Z-domains. Enzyme Microb Technol 2014; 66:42-7. [DOI: 10.1016/j.enzmictec.2014.08.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 07/08/2014] [Accepted: 08/14/2014] [Indexed: 11/25/2022]
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23
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Yoo G, Bong JH, Kim S, Jose J, Pyun JC. Microarray based on autodisplayed Ro proteins for medical diagnosis of systemic lupus erythematosus (SLE). Biosens Bioelectron 2014; 57:213-8. [DOI: 10.1016/j.bios.2014.02.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 01/30/2014] [Accepted: 02/10/2014] [Indexed: 11/30/2022]
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24
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Hasanzadeh M, Shadjou N, Soleymani J, Omidinia E, de la Guardia M. Optical immunosensing of effective cardiac biomarkers on acute myocardial infarction. Trends Analyt Chem 2013. [DOI: 10.1016/j.trac.2013.06.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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25
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Flow cytometric immunoassay using E. coli with autodisplayed Z-domains. Enzyme Microb Technol 2013; 53:181-8. [DOI: 10.1016/j.enzmictec.2013.03.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 03/05/2013] [Accepted: 03/25/2013] [Indexed: 11/23/2022]
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26
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Nicolay T, Vanderleyden J, Spaepen S. Autotransporter-based cell surface display in Gram-negative bacteria. Crit Rev Microbiol 2013; 41:109-23. [PMID: 23855358 DOI: 10.3109/1040841x.2013.804032] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Cell surface display of proteins can be used for several biotechnological applications such as the screening of protein libraries, whole cell biocatalysis and live vaccine development. Amongst all secretion systems and surface appendages of Gram-negative bacteria, the autotransporter secretion pathway holds great potential for surface display because of its modular structure and apparent simplicity. Autotransporters are polypeptides made up of an N-terminal signal peptide, a secreted or surface-displayed passenger domain and a membrane-anchored C-terminal translocation unit. Genetic replacement of the passenger domain allows for the surface display of heterologous passengers. An autotransporter-based surface expression module essentially consists of an application-dependent promoter system, a signal peptide, a passenger domain of interest and the autotransporter translocation unit. The passenger domain needs to be compatible with surface translocation although till now no general rules have been determined to test this compatibility. The autotransporter technology for surface display of heterologous passenger domains is critically discussed for various applications.
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Affiliation(s)
- Toon Nicolay
- Centre of Microbial and Plant Genetics , Leuven , Belgium
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27
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A carbon nanotube metal semiconductor field effect transistor-based biosensor for detection of amyloid-beta in human serum. Biosens Bioelectron 2013; 50:345-50. [PMID: 23891796 DOI: 10.1016/j.bios.2013.07.004] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 07/03/2013] [Accepted: 07/04/2013] [Indexed: 01/08/2023]
Abstract
We have developed a carbon nanotube (CNT) film-based biosensor with a metal semiconductor field effect transistor structure (MESFET). A gold top gate was deposited on the middle of the CNT channel and probe antibodies were immobilized on the gold top gate with an antibody-binding protein, protein G or Escherichia coli outer membrane (OM) with autodisplayed Z-domains of protein A. These CNT-MESFET biosensors exhibited a higher sensitivity than the CNT-FET biosensor with probe antibodies immobilized using a chemical linker, since the orientation of immobilized antibodies was controlled by the antibody-binding proteins. In addition, nonspecific binding was effectively inhibited by E. coli OM. Using the CNT-MESFET biosensors with E. coli OM containing Z domain, we detected amyloid-β (Aβ) in human serum, one of the biomarkers for early diagnosis of Alzheimer's disease. Aβ at the level of 1 pg/mL in human serum could be measured in real-time and without labeling, which was lower than a limit of detection for plasma Aβ using an enzyme-linked immune sorbent assay. These results suggested that our CNT-MESFET biosensors might be applicable for an early diagnosis of Alzheimer's disease.
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28
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Magnetic-bead-based immunoassay using E. coli cells with autodisplayed Z-domains. Enzyme Microb Technol 2013; 53:118-22. [DOI: 10.1016/j.enzmictec.2013.03.022] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 03/22/2013] [Accepted: 03/26/2013] [Indexed: 11/19/2022]
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29
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Optimization of a FACS based-immunoassay using E. coli autodisplaying Z-domains. BIOCHIP JOURNAL 2013. [DOI: 10.1007/s13206-013-7211-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Jose J, Maas RM, Teese MG. Autodisplay of enzymes—Molecular basis and perspectives. J Biotechnol 2012; 161:92-103. [DOI: 10.1016/j.jbiotec.2012.04.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2011] [Revised: 02/14/2012] [Accepted: 04/04/2012] [Indexed: 11/16/2022]
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31
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SPR biosensor based on immobilized E.coli cells with autodisplayed Z-domains. BIOCHIP JOURNAL 2012. [DOI: 10.1007/s13206-012-6304-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Yoo G, Park M, Lee EH, Jose J, Pyun JC. Immobilization of E. coli with autodisplayed Z-domains to a surface-modified microplate for immunoassay. Anal Chim Acta 2011; 707:142-7. [DOI: 10.1016/j.aca.2011.09.004] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 09/01/2011] [Accepted: 09/06/2011] [Indexed: 10/17/2022]
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33
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Fluorescence immunoassay of anti-cyclic citrulinated peptide (CCP) autoantibodies by using parylene-H film. BIOCHIP JOURNAL 2011. [DOI: 10.1007/s13206-011-5308-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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De Marni ML, Monegal A, Venturini S, Vinati S, Carbone R, de Marco A. Antibody purification-independent microarrays (PIM) by direct bacteria spotting on TiO2-treated slides. Methods 2011; 56:317-25. [PMID: 21736943 DOI: 10.1016/j.ymeth.2011.06.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 06/17/2011] [Accepted: 06/20/2011] [Indexed: 11/30/2022] Open
Abstract
The preparation of effective conventional antibody microarrays depends on the availability of high quality material and on the correct accessibility of the antibody active moieties following their immobilization on the support slide. We show that spotting bacteria that expose recombinant antibodies on their external surface directly on nanostructured-TiO(2) or epoxy slides (purification-independent microarray - PIM) is a simple and reliable alternative for preparing sensitive and specific microarrays for antigen detection. Variable domains of single heavy-chain antibodies (VHHs) against fibroblast growth factor receptor 1 (FGFR1) were used to capture the antigen diluted in serum or BSA solution. The FGFR1 detection was performed by either direct antigen labeling or using a sandwich system in which FGFR1 was first bound to its antibody and successively identified using a labeled FGF. In both cases the signal distribution within each spot was uniform and spot morphology regular. The signal-to-noise ratio of the signal was extremely elevated and the specificity of the system was proved statistically. The LOD of the system for the antigen was calculated being 0.4ng/mL and the dynamic range between 0.4ng/mL and 10μg/mL. The microarrays prepared with bacteria exposing antibodies remain fully functional for at least 31 days after spotting. We finally demonstrated that the method is suitable for other antigen-antibody pairs and expect that it could be easily adapted to further applications such as the display of scFv and IgG antibodies or the autoantibody detection using protein PIMs.
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Kaeßler A, Olgen S, Jose J. Autodisplay of catalytically active human hyaluronidase hPH-20 and testing of enzyme inhibitors. Eur J Pharm Sci 2011; 42:138-47. [DOI: 10.1016/j.ejps.2010.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 10/18/2010] [Accepted: 11/05/2010] [Indexed: 11/30/2022]
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36
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Park M, Jose J, Thömmes S, Kim JI, Kang MJ, Pyun JC. Autodisplay of streptavidin. Enzyme Microb Technol 2010; 48:307-11. [PMID: 22112942 DOI: 10.1016/j.enzmictec.2010.12.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2010] [Revised: 10/31/2010] [Accepted: 12/11/2010] [Indexed: 10/18/2022]
Abstract
Streptavidin was expressed on the outer membrane of E. coli as a recombinant fusion protein with an autotransporter domain called AIDA-I (adhesin involved in diffuse adherence) using autodisplay technology. The autodisplay of streptavidin was confirmed by SDS-PAGE of the outer membrane proteins, and the number of autodisplayed streptavidin molecules on a single E. coli cell was evaluated with densitometric analysis. The biotin-binding activity of the autodisplayed streptavidin was estimated after treatment with fluorescently labeled biotin by fluorescence microscopy and flow cytometry. The biotin-binding activity of the E. coli with autodisplayed streptavidin was compared with the activity of streptavidin immobilized on magnetic beads. Finally, the outer membrane presenting autodisplayed streptavidin was isolated and layered on a 96-well microplate for an immunoassay.
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Affiliation(s)
- Min Park
- School of Materials and Sciences, College of Engineering, Yonsei University, 134 Shin-chon-dong, Seo-dae-mun-gu, Seoul 120-749, Republic of Korea
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Petermann K, Vordenbäumen S, Pyun JC, Braukmann A, Bleck E, Schneider M, Jose J. Autodisplay of 60-kDa Ro/SS-A antigen and development of a surface display enzyme-linked immunosorbent assay for systemic lupus erythematosus patient sera screening. Anal Biochem 2010; 407:72-8. [DOI: 10.1016/j.ab.2010.07.030] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Revised: 07/20/2010] [Accepted: 07/27/2010] [Indexed: 11/25/2022]
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38
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Jong WSP, Saurí A, Luirink J. Extracellular production of recombinant proteins using bacterial autotransporters. Curr Opin Biotechnol 2010; 21:646-52. [DOI: 10.1016/j.copbio.2010.07.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Accepted: 07/15/2010] [Indexed: 01/29/2023]
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39
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Engineered lactic acid bacterium Lactococcus lactis capable of binding antibodies and tumor necrosis factor alpha. Appl Environ Microbiol 2010; 76:6928-32. [PMID: 20802083 DOI: 10.1128/aem.00190-10] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We have optimized the display of the B domain of staphylococcal protein A on the surface of Lactococcus lactis. The maximum binding capacity was estimated at 0.146 μg of antibody per 10⁸ cells and was sustained at 86% after treatment with simulated gastric juice. A tumor necrosis factor alpha (TNF-α)-binding affibody was also displayed and bound TNF-α, which could be useful in the treatment of inflammatory bowel disease.
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40
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Jose J, Park M, Pyun JC. Highly sensitive immunoassay based on E. coli with autodisplayed Z-domain. Anal Chim Acta 2010; 667:113-8. [DOI: 10.1016/j.aca.2010.03.046] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2009] [Revised: 01/07/2010] [Accepted: 03/22/2010] [Indexed: 11/30/2022]
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41
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Park M, Jose J, Pyun JC. Hypersensitive immunoassay by using Escherichia coli outer membrane with autodisplayed Z-domains. Enzyme Microb Technol 2010. [DOI: 10.1016/j.enzmictec.2009.12.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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