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Denda M, Otaka A. Advances in Preparation of Peptide and Protein Thioesters Aiming to Use in Medicinal Sciences. Chem Pharm Bull (Tokyo) 2022; 70:316-323. [DOI: 10.1248/cpb.c21-01019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Masaya Denda
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University
| | - Akira Otaka
- Institute of Biomedical Sciences and Graduate School of Pharmaceutical Sciences, Tokushima University
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2
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Abstract
Functional papers are the subject of extensive research efforts and have already become an irreplaceable part of our modern society. Among other issues, they enable fast and inexpensive detection of a plethora of analytes and simplify laboratory work, for example in medical tests. This article focuses on the molecular and structural fundamentals of paper and the possibilities of functionalization, commercially available assays and their production, as well as on current and future challenges in research in this field.
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3
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Blond P, Mattiuzzi A, Valkenier H, Troian-Gautier L, Bergamini JF, Doneux T, Goormaghtigh E, Raussens V, Jabin I. Grafting of Oligo(ethylene glycol)-Functionalized Calix[4]arene-Tetradiazonium Salts for Antifouling Germanium and Gold Surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:6021-6027. [PMID: 29724105 DOI: 10.1021/acs.langmuir.8b00464] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Biosensors that can determine protein concentration and structure are highly desired for biomedical applications. For the development of such biosensors, the use of Fourier transform infrared (FTIR) spectroscopy with the attenuated internal total reflection (ATR) configuration is particularly attractive, but it requires appropriate surface functionalization of the ATR optical element. Indeed, the surface has to specifically interact with a target protein in close contact with the optical element and must display antifouling properties to prevent nonspecific adsorption of other proteins. Here, we report robust monolayers of calix[4]arenes bearing oligo(ethylene glycol) (oEG) chains, which were grafted on germanium and gold surfaces via their tetradiazonium salts. The formation of monolayers of oEGylated calix[4]arenes was confirmed by AFM, IR, and contact angle measurements. The antifouling properties of these modified surfaces were studied by ATR-FTIR spectroscopy and fluorescence microscopy, and the nonspecific absorption of bovine serum albumin was found to be reduced by 85% compared to that of unmodified germanium. In other words, the organic coating by oEGylated calix[4]arenes provides remarkable antifouling properties, opening the way for the design of germanium- or gold-based biosensors.
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Affiliation(s)
- Pascale Blond
- Laboratoire de Chimie Organique , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP160/06, B-1050 Brussels , Belgium
- Laboratory for the Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP206/02, B-1050 Brussels , Belgium
| | - Alice Mattiuzzi
- Laboratoire de Chimie Organique , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP160/06, B-1050 Brussels , Belgium
- X4C , Rue Chêne Bonnet 128 , 6110 Montigny-le-Tilleul , Belgium
| | - Hennie Valkenier
- Engineering of Molecular NanoSystems , Ecole Polytechnique de Bruxelles, Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP165/64, B-1050 Brussels , Belgium
| | - Ludovic Troian-Gautier
- Laboratoire de Chimie Organique , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP160/06, B-1050 Brussels , Belgium
| | - Jean-François Bergamini
- Institut des Sciences Chimiques de Rennes (Equipe MaCSE), CNRS, UMR 6226 , Université de Rennes 1 , Campus de Beaulieu, Bat 10C, 35042 Cedex Rennes , France
| | - Thomas Doneux
- Chimie Analytique et Chimie des Interfaces , Université Libre de Bruxelles (ULB) , Campus de la Plaine, boulevard du Triomphe , CP255, B-1050 Brussels , Belgium
| | - Erik Goormaghtigh
- Laboratory for the Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP206/02, B-1050 Brussels , Belgium
| | - Vincent Raussens
- Laboratory for the Structure and Function of Biological Membranes, Center for Structural Biology and Bioinformatics , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP206/02, B-1050 Brussels , Belgium
| | - Ivan Jabin
- Laboratoire de Chimie Organique , Université Libre de Bruxelles (ULB) , avenue F. D. Roosevelt 50 , CP160/06, B-1050 Brussels , Belgium
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4
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Zhu F, Mao C, Du D. Time-resolved immunoassay based on magnetic particles for the detection of diethyl phthalate in environmental water samples. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 601-602:723-731. [PMID: 28577407 DOI: 10.1016/j.scitotenv.2017.05.111] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 04/26/2017] [Accepted: 05/13/2017] [Indexed: 06/07/2023]
Abstract
Diethyl phthalate (DEP) is an extensively used phthalic acid diester (PAEs) with estrogenic activity and the potential for carcinogenic and teratogenic effects. To monitor trace DEP in environmental waters, a sensitive direct competitive time-resolved fluoroimmunoassay based on magnetic particles (MPs) as solid support was established. For the assay system, the anti-DEP antibody was oriented on the surface of the MPs using goat anti-rabbit antibody as linkers, and DEP-OVA was labeled using Eu3+. Several physicochemical factors that potentially influence the assay performance of the proposed method were investigated in detail, including concentration of MPs, dilution of DEP-OVA-Eu3+ and incubation time. Under the optimized conditions, the method showed: (i) low limit of detection (LOD) of 5.92ng/L; (ii) satisfactory accuracy (recoveries, 91.97-134.54%) with good reproducibility (inter-CV, 4.17-9.17%; intra-CV, 7.41-14.72%). All of which indicated that the newly established method had much higher efficiency and great potential for use in environmental water analysis for DEP. In addition, the proposed immunoassay was applied for investigation of DEP in aquatic environments at Zhenjiang City. Our results showed that DEP was detected at the concentration of 2.98-65.18ng/mL in river samples and 46.95-306.19ng/mL in wastewater treatment plants (WWTPs), which showed rather high concentrations compared with reported data. Our study provides background data important for risk assessment and contamination control of DEP in the aquatic environment of this area.
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Affiliation(s)
- Fang Zhu
- School of the Environment and Safety Engineering, Institute of Environment and Ecology, Jiangsu University, Zhenjiang 212013, China
| | - Chaoming Mao
- Department of Nuclear Medicine, The Affiliated Hospital of Jiangsu University, Zhenjiang 212013, China
| | - Daolin Du
- School of the Environment and Safety Engineering, Institute of Environment and Ecology, Jiangsu University, Zhenjiang 212013, China.
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5
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Kryndushkin D, Edskes HK, Shewmaker FP, Wickner RB. Prions. Cold Spring Harb Protoc 2017; 2017:2017/2/pdb.top077586. [PMID: 28148884 DOI: 10.1101/pdb.top077586] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Infectious proteins (prions) are usually self-templating filamentous protein polymers (amyloids). Yeast prions are genes composed of protein and, like the multiple alleles of DNA-based genes, can have an array of "variants," each a distinct self-propagating amyloid conformation. Like the lethal mammalian prions and amyloid diseases, yeast prions may be lethal, or only mildly detrimental, and show an array of phenotypes depending on the protein involved and the prion variant. Yeast prions are models for both rare mammalian prion diseases and for several very common amyloidoses such as Alzheimer's disease, type 2 diabetes, and Parkinson's disease. Here, we describe their detection and characterization using genetic, cell biological, biochemical, and physical methods.
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Affiliation(s)
- Dmitry Kryndushkin
- Department of Pharmacology, Uniformed Services University of Health Sciences, Bethesda, Maryland 20814
| | - Herman K Edskes
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0830
| | - Frank P Shewmaker
- Department of Pharmacology, Uniformed Services University of Health Sciences, Bethesda, Maryland 20814
| | - Reed B Wickner
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892-0830
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6
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Ta DT, Guedens W, Vranken T, Vanschoenbeek K, Steen Redeker E, Michiels L, Adriaensens P. Enhanced Biosensor Platforms for Detecting the Atherosclerotic Biomarker VCAM1 Based on Bioconjugation with Uniformly Oriented VCAM1-Targeting Nanobodies. BIOSENSORS-BASEL 2016; 6:bios6030034. [PMID: 27399790 PMCID: PMC5039653 DOI: 10.3390/bios6030034] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 06/27/2016] [Accepted: 06/29/2016] [Indexed: 01/05/2023]
Abstract
Surface bioconjugation of biomolecules has gained enormous attention for developing advanced biomaterials including biosensors. While conventional immobilization (by physisorption or covalent couplings using the functional groups of the endogenous amino acids) usually results in surfaces with low activity, reproducibility and reusability, the application of methods that allow for a covalent and uniformly oriented coupling can circumvent these limitations. In this study, the nanobody targeting Vascular Cell Adhesion Molecule-1 (NbVCAM1), an atherosclerotic biomarker, is engineered with a C-terminal alkyne function via Expressed Protein Ligation (EPL). Conjugation of this nanobody to azidified silicon wafers and Biacore™ C1 sensor chips is achieved via Copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) “click” chemistry to detect VCAM1 binding via ellipsometry and surface plasmon resonance (SPR), respectively. The resulting surfaces, covered with uniformly oriented nanobodies, clearly show an increased antigen binding affinity, sensitivity, detection limit, quantitation limit and reusability as compared to surfaces prepared by random conjugation. These findings demonstrate the added value of a combined EPL and CuAAC approach as it results in strong control over the surface orientation of the nanobodies and an improved detecting power of their targets—a must for the development of advanced miniaturized, multi-biomarker biosensor platforms.
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Affiliation(s)
- Duy Tien Ta
- Biomolecule Design Group, Institute for Materials Research (IMO), Hasselt University, Diepenbeek BE-3590, Belgium.
- Faculty of Food Technology and Biotechnology, Can Tho University of Technology, Can Tho 900000, Vietnam.
| | - Wanda Guedens
- Biomolecule Design Group, Institute for Materials Research (IMO), Hasselt University, Diepenbeek BE-3590, Belgium.
| | - Tom Vranken
- Biomolecule Design Group, Institute for Materials Research (IMO), Hasselt University, Diepenbeek BE-3590, Belgium.
| | - Katrijn Vanschoenbeek
- Immunology and Biochemistry, Biomedical Research Institute (Biomed) and School of Life Sciences, Transnationale Universiteit Limburg, Hasselt University, Diepenbeek BE-3590, Belgium.
| | - Erik Steen Redeker
- Maastricht Science Programme, Maastricht University, Maastricht 6200 MD, The Netherlands.
| | - Luc Michiels
- Immunology and Biochemistry, Biomedical Research Institute (Biomed) and School of Life Sciences, Transnationale Universiteit Limburg, Hasselt University, Diepenbeek BE-3590, Belgium.
| | - Peter Adriaensens
- Biomolecule Design Group, Institute for Materials Research (IMO), Hasselt University, Diepenbeek BE-3590, Belgium.
- Applied and Analytical Chemistry, Institute for Materials Research (IMO), Hasselt University, Diepenbeek BE-3590, Belgium.
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7
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Crawley N, Thompson M, Romaschin A. Theranostics in the Growing Field of Personalized Medicine: An Analytical Chemistry Perspective. Anal Chem 2013; 86:130-60. [DOI: 10.1021/ac4038812] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Niall Crawley
- Department
of Chemistry and
Institute for Biomaterials and Biomedical Engineering, University of Toronto, 80 St. George Street, Toronto, Ontario M5 S 3H6, Canada
| | - Michael Thompson
- Department
of Chemistry and
Institute for Biomaterials and Biomedical Engineering, University of Toronto, 80 St. George Street, Toronto, Ontario M5 S 3H6, Canada
| | - Alexander Romaschin
- Keenan Research Centre and
Clinical Biochemistry, St. Michael’s Hospital, 30 Bond Street, Toronto, Ontario M5B 1W8, Canada
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8
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Steen Redeker E, Ta DT, Cortens D, Billen B, Guedens W, Adriaensens P. Protein Engineering For Directed Immobilization. Bioconjug Chem 2013; 24:1761-77. [DOI: 10.1021/bc4002823] [Citation(s) in RCA: 143] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Erik Steen Redeker
- Biomolecule Design Group
(BDG), Institute for Materials Research (IMO), Chemistry Division, Hasselt University, Agoralaan
Building D, 3590 Diepenbeek, Belgium
| | - Duy Tien Ta
- Biomolecule Design Group
(BDG), Institute for Materials Research (IMO), Chemistry Division, Hasselt University, Agoralaan
Building D, 3590 Diepenbeek, Belgium
| | - David Cortens
- Biomolecule Design Group
(BDG), Institute for Materials Research (IMO), Chemistry Division, Hasselt University, Agoralaan
Building D, 3590 Diepenbeek, Belgium
| | - Brecht Billen
- Biomolecule Design Group
(BDG), Institute for Materials Research (IMO), Chemistry Division, Hasselt University, Agoralaan
Building D, 3590 Diepenbeek, Belgium
| | - Wanda Guedens
- Biomolecule Design Group
(BDG), Institute for Materials Research (IMO), Chemistry Division, Hasselt University, Agoralaan
Building D, 3590 Diepenbeek, Belgium
| | - Peter Adriaensens
- Biomolecule Design Group
(BDG), Institute for Materials Research (IMO), Chemistry Division, Hasselt University, Agoralaan
Building D, 3590 Diepenbeek, Belgium
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9
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Sheikh S, Blaszykowski C, Thompson M. Sacrificial BSA to block non-specific adsorption on organosilane adlayers in ultra-high frequency acoustic wave sensing. SURF INTERFACE ANAL 2013. [DOI: 10.1002/sia.5322] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Sonia Sheikh
- University of Toronto; Department of Chemistry; 80 St. George Street; Toronto; Ontario; Canada; M5S 3H6
| | - Christophe Blaszykowski
- University of Toronto; Department of Chemistry; 80 St. George Street; Toronto; Ontario; Canada; M5S 3H6
| | - Michael Thompson
- University of Toronto; Department of Chemistry; 80 St. George Street; Toronto; Ontario; Canada; M5S 3H6
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10
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Sullan RMA, Churnside AB, Nguyen DM, Bull MS, Perkins TT. Atomic force microscopy with sub-picoNewton force stability for biological applications. Methods 2013; 60:131-41. [PMID: 23562681 DOI: 10.1016/j.ymeth.2013.03.029] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 03/22/2013] [Accepted: 03/25/2013] [Indexed: 01/24/2023] Open
Abstract
Atomic force microscopy (AFM) is widely used in the biological sciences. Despite 25 years of technical developments, two popular modes of bioAFM, imaging and single molecule force spectroscopy, remain hindered by relatively poor force precision and stability. Recently, we achieved both sub-pN force precision and stability under biologically useful conditions (in liquid at room temperature). Importantly, this sub-pN level of performance is routinely accessible using a commercial cantilever on a commercial instrument. The two critical results are that (i) force precision and stability were limited by the gold coating on the cantilevers, and (ii) smaller yet stiffer cantilevers did not lead to better force precision on time scales longer than 25 ms. These new findings complement our previous work that addressed tip-sample stability. In this review, we detail the methods needed to achieve this sub-pN force stability and demonstrate improvements in force spectroscopy and imaging when using uncoated cantilevers. With this improved cantilever performance, the widespread use of nonspecific biomolecular attachments becomes a limiting factor in high-precision studies. Thus, we conclude by briefly reviewing site-specific covalent-immobilization protocols for linking a biomolecule to the substrate and to the AFM tip.
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Affiliation(s)
- Ruby May A Sullan
- JILA, National Institute of Standards and Technology, University of Colorado, Boulder, CO 80309, USA
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11
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Blaszykowski C, Sheikh S, Benvenuto P, Thompson M. New functionalizable alkyltrichlorosilane surface modifiers for biosensor and biomedical applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2318-2322. [PMID: 22268643 DOI: 10.1021/la2042839] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report herein three unprecedented alkyltrichlorosilane surface modifiers bearing pentafluorophenyl ester (PFP), benzothiosulfonate (BTS), or novel β-propiolactone (BPL) functionalizable terminal groups. Evidence is provided that these molecules can be prepared in very high purity (as assessed by NMR) through a last synthetic step of Pt-catalyzed alkene hydrosilylation then directly employed, without further purification, for the surface modification of quartz and medical grade stainless steel. Subsequent on-surface functionalizations with amine and thiol model molecules demonstrate the potential of these molecular adlayers to be important platforms for future applications in the bioanalytical and biomedical fields.
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Affiliation(s)
- Christophe Blaszykowski
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON, Canada M5S 3H6
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12
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Berrade L, Garcia AE, Camarero JA. Protein microarrays: novel developments and applications. Pharm Res 2010; 28:1480-99. [PMID: 21116694 PMCID: PMC3137928 DOI: 10.1007/s11095-010-0325-1] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Accepted: 11/08/2010] [Indexed: 02/05/2023]
Abstract
Protein microarray technology possesses some of the greatest potential for providing direct information on protein function and potential drug targets. For example, functional protein microarrays are ideal tools suited for the mapping of biological pathways. They can be used to study most major types of interactions and enzymatic activities that take place in biochemical pathways and have been used for the analysis of simultaneous multiple biomolecular interactions involving protein-protein, protein-lipid, protein-DNA and protein-small molecule interactions. Because of this unique ability to analyze many kinds of molecular interactions en masse, the requirement of very small sample amount and the potential to be miniaturized and automated, protein microarrays are extremely well suited for protein profiling, drug discovery, drug target identification and clinical prognosis and diagnosis. The aim of this review is to summarize the most recent developments in the production, applications and analysis of protein microarrays.
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Affiliation(s)
- Luis Berrade
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, 1985 Zonal Avenue, PSC 616, Los Angeles, California 90033, USA
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13
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Sheikh S, Sheng JCC, Blaszykowski C, Thompson M. New oligoethylene glycol linkers for the surface modification of an ultra-high frequency acoustic wave biosensor. Chem Sci 2010. [DOI: 10.1039/c0sc00158a] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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14
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Lin PC, Weinrich D, Waldmann H. Protein Biochips: Oriented Surface Immobilization of Proteins. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900539] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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15
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Berrade L, Camarero JA. Expressed protein ligation: a resourceful tool to study protein structure and function. Cell Mol Life Sci 2009; 66:3909-22. [PMID: 19685006 PMCID: PMC3806878 DOI: 10.1007/s00018-009-0122-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Revised: 07/23/2009] [Accepted: 07/28/2009] [Indexed: 01/21/2023]
Abstract
This review outlines the use of expressed protein ligation (EPL) to study protein structure, function and stability. EPL is a chemoselective ligation method that allows the selective ligation of unprotected polypeptides from synthetic and recombinant origin for the production of semi-synthetic protein samples of well-defined and homogeneous chemical composition. This method has been extensively used for the site-specific introduction of biophysical probes, unnatural amino acids, and increasingly complex post-translational modifications. Since it was introduced 10 years ago, EPL applications have grown increasingly more sophisticated in order to address even more complex biological questions. In this review, we highlight how this powerful technology combined with standard biochemical analysis techniques has been used to improve our ability to understand protein structure and function.
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Affiliation(s)
- Luis Berrade
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, 1985 Zonal Avenue, PSC 616, Los Angeles, CA 90033 USA
| | - Julio A. Camarero
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, 1985 Zonal Avenue, PSC 616, Los Angeles, CA 90033 USA
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16
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Wong LS, Khan F, Micklefield J. Selective Covalent Protein Immobilization: Strategies and Applications. Chem Rev 2009; 109:4025-53. [DOI: 10.1021/cr8004668] [Citation(s) in RCA: 387] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lu Shin Wong
- School of Chemistry and Manchester Interdisciplinary Biocentre, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Farid Khan
- School of Chemistry and Manchester Interdisciplinary Biocentre, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Jason Micklefield
- School of Chemistry and Manchester Interdisciplinary Biocentre, The University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
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17
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Saoud M, Blaszykowski C, Ballantyne SM, Thompson M. Linker immobilization of protein and oligonucleotide on indium-tin-oxide for detection of probe-target interactions by Kelvin physics. Analyst 2009; 134:835-7. [PMID: 19381371 DOI: 10.1039/b822946p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work describes a label-free microarray analysis technique capable of detecting biomolecule target interactions with probes being anchored with a new linker-diluent system on indium-tin-oxide. The method is based on the differential work function characteristics of the substrate measured by a scanning Kelvin nanoprobe in terms of contact potential difference signals.
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Affiliation(s)
- Marwan Saoud
- Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3H6
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18
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He JL, Wu ZS, Zhang SB, Shen GL, Yu RQ. Novel fluorescence enhancement IgE assay using a DNA aptamer. Analyst 2009; 134:1003-7. [PMID: 19381397 DOI: 10.1039/b812450g] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we demonstrate a fluorescence immunoglobulin E (IgE) assay probe based on a DNA aptamer. A Texas red-labeled short DNA strand (T-DNA) complementary with part of the IgE aptamer sequence was used to produce the fluorescence enhancement effected upon the binding of IgE to the aptamer. Another short DNA strand labeled with dabcyl quencher (Q-DNA) complementary with part of the aptamer sequence nearby the T-DNA location was used to lower the background fluorescence. The IgE can be detected in the concentration range from 9.2 x 10(-11) to 3.7 x 10(-8) mol L(-1) with a detection limit of 5.7 x 10(-11) mol L(-1).
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Affiliation(s)
- Jing-Lin He
- State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
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19
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Jonkheijm P, Weinrich D, Schröder H, Niemeyer CM, Waldmann H. Chemical strategies for generating protein biochips. Angew Chem Int Ed Engl 2008; 47:9618-47. [PMID: 19025742 DOI: 10.1002/anie.200801711] [Citation(s) in RCA: 510] [Impact Index Per Article: 31.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Protein biochips are at the heart of many medical and bioanalytical applications. Increasing interest has been focused on surface activation and subsequent functionalization strategies for immobilizing these biomolecules. Different approaches using covalent and noncovalent chemistry are reviewed; particular emphasis is placed on the chemical specificity of protein attachment and on retention of protein function. Strategies for creating protein patterns (as opposed to protein arrays) are also outlined. An outlook on promising and challenging future directions for protein biochip research and applications is also offered.
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Affiliation(s)
- Pascal Jonkheijm
- Department of Chemical Biology, Max Planck Institute of Molecular Physiology and Faculty of Chemistry, Chemical Biology, Technical University of Dortmund, Otto Hahn Strasse 11, 44227 Dortmund, Germany
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20
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Jonkheijm P, Weinrich D, Schröder H, Niemeyer C, Waldmann H. Chemische Verfahren zur Herstellung von Proteinbiochips. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801711] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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21
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22
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Lebert JM, Forsberg EM, Brennan JD. Solid-phase assays for small molecule screening using sol-gel entrapped proteins. Biochem Cell Biol 2008; 86:100-10. [PMID: 18443623 DOI: 10.1139/o08-010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
With compound libraries exceeding one million compounds, the ability to quickly and effectively screen these compounds against relevant pharmaceutical targets has become crucial. Solid-phase assays present several advantages over solution-based methods. For example, a higher degree of miniaturization can be achieved, functional- and affinity-based studies are possible, and a variety of detection methods can be used. Unfortunately, most protein immobilization methods are either too harsh or require recombinant proteins and thus are not amenable to delicate proteins such as kinases and membrane-bound receptors. Sol-gel encapsulation of proteins in an inorganic silica matrix has emerged as a novel solid-phase assay platform. In this minireview, we discuss the development of sol-gel derived protein microarrays and sol-gel based monolithic bioaffinity columns for the high-throughput screening of small molecule libraries and mixtures.
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Affiliation(s)
- Julie M Lebert
- Chemical Biology Program, Department of Chemistry, McMaster University, 1280 Main St. W, Hamilton, ON L8S4M1, Canada
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23
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Gunawan RC, King JA, Lee BP, Messersmith PB, Miller WM. Surface presentation of bioactive ligands in a nonadhesive background using DOPA-tethered biotinylated poly(ethylene glycol). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:10635-43. [PMID: 17803326 PMCID: PMC2547987 DOI: 10.1021/la701415z] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We have developed surfaces for the selective presentation of biotinylated peptides and proteins in a background that resists nonspecific protein adsorption; controlled amounts of biotinylated poly(ethylene glycol) (MW 3400 Da; PEG3400) anchored to titanium-dioxide-coated surfaces via an adhesive tri-peptide sequence of L-3,4-dihydroxyphenylalanine (DOPA3-PEG3400-biotin; DPB) were incorporated within a DOPA3-PEG2000 background. Using optical waveguide lightmode spectroscopy, we found that the amounts of sequentially adsorbed NeutrAvidin and singly biotinylated molecules increased proportionally with the amount of DPB in the surface. Biotinylated peptides (MW approximately 2000 Da) were able to fill all three of the remaining avidin-binding sites, while only one molecule of biotinylated PEG5000 or stem cell factor bound to each avidin. The resulting biotin-avidin-biotin linkages were stable for prolonged periods under continuous perfusion, even in the presence of excess free biotin. Hematopoietic M07e cells bound to immobilized peptide ligands for alpha5beta1 (cyclic RGD) and alpha4beta1 (cylic LDV) integrins in a DPB-dose-dependent manner, with near-maximal binding to cylic LDV for surfaces containing 1% DPB. Multiple ligands were adsorbed in a controlled manner by incubating NeutrAvidin with the respective ligands in the desired molar ratio and then adding the resulting complexes to DPB-containing surfaces. Cell adhesion to surfaces containing both cylic LDV and cyclic RGD increased in an additive manner compared to that for the individual ligands. The bioactivity of adsorbed biotinylated stem cell factor was retained, as demonstrated by DPB-dose-dependent M07e cell adhesion and ERK1/2 activation.
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Affiliation(s)
- Rico C Gunawan
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, USA
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24
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Camarero JA. Recent developments in the site-specific immobilization of proteins onto solid supports. Biopolymers 2007; 90:450-8. [PMID: 17618518 DOI: 10.1002/bip.20803] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Immobilization of proteins onto surfaces is of great importance in numerous applications, including protein analysis, drug screening, and medical diagnostics, among others. The success of all these technologies relies on the immobilization technique employed to attach a protein to the corresponding surface. Non-specific physical adsorption or chemical cross-linking with appropriate surfaces results in the immobilization of the protein in random orientations. Site-specific covalent attachment, on the other hand, leads to molecules being arranged in a definite, orderly fashion and allows the use of spacers and linkers to help minimize steric hindrances between the protein and the surface. The present work reviews the latest chemical and biochemical developments for the site-specific covalent attachment of proteins onto solid supports.
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Affiliation(s)
- Julio A Camarero
- Biosciences and Biotechnology Division, Lawrence Livermore National Laboratory, University of California, Livermore, CA 94550, USA.
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25
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Shen Y, Mackey G, Rupcich N, Gloster D, Chiuman W, Li Y, Brennan JD. Entrapment of Fluorescence Signaling DNA Enzymes in Sol−Gel-Derived Materials for Metal Ion Sensing. Anal Chem 2007; 79:3494-503. [PMID: 17378543 DOI: 10.1021/ac070235u] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three fluorescence signaling DNA enzymes (deoxyribozymes or DNAzymes) were successfully immobilized within a series of sol-gel-derived matrixes and used for sensing of various metal ions. The DNAzymes are designed such that binding of appropriate metal ions induces the formation of a catalytic site that cleaves a ribonucleotide linkage within a DNA substrate. A fluorophore (fluorescein) and a quencher (DABCYL, [4-(4-dimethylaminophenylazo)benzoic acid]) were placed on the two deoxythymidines flanking the ribonucleotide to allow the generation of fluorescence upon the catalytic cleavage at the RNA linkage. In general, all DNAzymes retained at least partial catalytic function when entrapped in either hydrophilic or hydrophobic silica-based materials, but displayed slower response times and lower overall signal changes relative to solution. Interestingly, it was determined that maximum sensitivity toward metal ions was obtained when DNAzymes were entrapped into composite materials containing approximately 40% of methyltrimethoxysilane (MTMS) and approximately 60% tetramethoxysilane (TMOS). Highly polar materials derived from sodium silicate, diglycerylsilane, or TMOS had relatively low signal enhancements, while materials with very high levels of MTMS showed significant leaching and low signal enhancements. Entrapment into the hybrid silica material also reduced signal interferences that were related to metal-induced quenching; such interferences were a significant problem for solution-based assays and for polar materials. Extension of the solid-phase DNAzyme assay toward a multiplexed assay format for metal detection is demonstrated, and shows that sol-gel technology can provide new opportunities for the development of DNAzyme-based biosensors.
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Affiliation(s)
- Yutu Shen
- Department of Chemistry, McMaster University, Hamilton, Ontario, Canada, L8S 4M1
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26
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Fischer T, Hess H. Materials chemistry challenges in the design of hybrid bionanodevices: supporting protein function within artificial environments. ACTA ACUST UNITED AC 2007. [DOI: 10.1039/b615278c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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