1
|
Gruchow HM, Opdensteinen P, Buyel JF. Membrane-based inverse-transition purification facilitates a rapid isolation of various spider-silk elastin-like polypeptide fusion proteins from extracts of transgenic tobacco. Transgenic Res 2024; 33:21-33. [PMID: 38573429 PMCID: PMC11021290 DOI: 10.1007/s11248-024-00375-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 02/05/2024] [Indexed: 04/05/2024]
Abstract
Plants can produce complex pharmaceutical and technical proteins. Spider silk proteins are one example of the latter and can be used, for example, as compounds for high-performance textiles or wound dressings. If genetically fused to elastin-like polypeptides (ELPs), the silk proteins can be reversibly precipitated from clarified plant extracts at moderate temperatures of ~ 30 °C together with salt concentrations > 1.5 M, which simplifies purification and thus reduces costs. However, the technologies developed around this mechanism rely on a repeated cycling between soluble and aggregated state to remove plant host cell impurities, which increase process time and buffer consumption. Additionally, ELPs are difficult to detect using conventional staining methods, which hinders the analysis of unit operation performance and process development. Here, we have first developed a surface plasmon resonance (SPR) spectroscopy-based assay to quantity ELP fusion proteins. Then we tested different filters to prepare clarified plant extract with > 50% recovery of spider silk ELP fusion proteins. Finally, we established a membrane-based purification method that does not require cycling between soluble and aggregated ELP state but operates similar to an ultrafiltration/diafiltration device. Using a data-driven design of experiments (DoE) approach to characterize the system of reversible ELP precipitation we found that membranes with pore sizes up to 1.2 µm and concentrations of 2-3 M sodium chloride facilitate step a recovery close to 100% and purities of > 90%. The system can thus be useful for the purification of ELP-tagged proteins produced in plants and other hosts.
Collapse
Affiliation(s)
- H M Gruchow
- Institute for Molecular Biotechnology, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| | - P Opdensteinen
- Institute for Molecular Biotechnology, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany
| | - J F Buyel
- Institute for Molecular Biotechnology, RWTH Aachen University, Worringerweg 1, 52074, Aachen, Germany.
- Institute of Bioprocess Science and Engineering (IBSE), Department of Biotechnology (DBT), University of Natural Resources and Life Sciences (BOKU), Muthgasse 18, 1190, Vienna, Austria.
| |
Collapse
|
2
|
Azmi SNH, Al-Jassasi BMH, Al-Sawafi HMS, Al-Shukaili SHG, Rahman N, Nasir M. Optimization for synthesis of silver nanoparticles through response surface methodology using leaf extract of Boswellia sacra and its application in antimicrobial activity. Environ Monit Assess 2021; 193:497. [PMID: 34286386 DOI: 10.1007/s10661-021-09301-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 07/12/2021] [Indexed: 06/13/2023]
Abstract
In the present work, leaf extract of Boswellia sacra was used as reductant for synthesis of silver nanoparticles (AgNPs). The variables such as volume of Boswellia sacra leaf extract (1%), volume of silver nitrate (1 mM), and temperature were optimized by response surface methodology via Box-Behnken design for the synthesis of AgNPs. Design-Expert software generated the optimum conditions for the highest yield of silver nanoparticles as 8 mL of 1 mM AgNO3, 8 mL of 1% Boswellia sacra leaf extract, and temperature = 55 °C. The formed AgNPs were isolated and purified by centrifugation process using ethanol/ distilled water. AgNPs were characterized using FTIR, SEM, TEM, EDX, and XRD. AgNPs showed surface plasmon resonance absorption band at 422 nm. XRD pattern indicated the crystalline nature of the particles (diameter 11.17 to 37.50 nm) with face-centered cubic structure. SEM and TEM images highlighted the formation of spherical AgNPs. The energy dispersive spectroscopic spectrum confirmed the presence of elemental silver. The microbial activity of AgNPs was evaluated against bacteria and fungi. Synthesized AgNPs were very effective against Gram-positive E. coli bacterial strains and fungal strains (Penicillium chrysogenum).
Collapse
Affiliation(s)
- Syed Najmul Hejaz Azmi
- University of Technology and Applied Sciences, Applied Sciences Department (Chemistry Section), Higher College of Technology Muscat, P. O. Box 74, Al-Khuwair, 133, Sultanate of Oman.
| | - Bushra Mohammed Hamed Al-Jassasi
- University of Technology and Applied Sciences, Applied Sciences Department (Chemistry Section), Higher College of Technology Muscat, P. O. Box 74, Al-Khuwair, 133, Sultanate of Oman
| | - Hiba Mohammed Saif Al-Sawafi
- University of Technology and Applied Sciences, Applied Sciences Department (Chemistry Section), Higher College of Technology Muscat, P. O. Box 74, Al-Khuwair, 133, Sultanate of Oman
| | - Sahar Harib Gharib Al-Shukaili
- University of Technology and Applied Sciences, Applied Sciences Department (Chemistry Section), Higher College of Technology Muscat, P. O. Box 74, Al-Khuwair, 133, Sultanate of Oman
| | - Nafisur Rahman
- Department of Chemistry, Aligarh Muslim University, Uttar Pradesh, Aligarh, 202002, India
| | - Mohd Nasir
- Department of Chemistry, Aligarh Muslim University, Uttar Pradesh, Aligarh, 202002, India
| |
Collapse
|
3
|
Écija-Arenas Á, Kirchner EM, Hirsch T, Fernández-Romero JM. Development of an aptamer-based SPR-biosensor for the determination of kanamycin residues in foods. Anal Chim Acta 2021; 1169:338631. [PMID: 34088369 DOI: 10.1016/j.aca.2021.338631] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 04/27/2021] [Accepted: 05/07/2021] [Indexed: 12/12/2022]
Abstract
A biosensor in which an affinity reaction occurs in the sensitive microzone through the use of specific aptamers to determine kanamycin residues in agri-food samples has been developed. It is an irreversible and continuous flow aptameric biosensor (aptasensor) in which the signal variations are monitored by surface plasmon resonance (SPR) measurements based on the specific interaction of the aptamer with the antibiotic. The signal variation is proportional to the analyte concentration. Graphene is known for efficient binding of molecules with its π-electron system, so a monolayer of graphene prepared from chemical vapor deposition (CVD) has been compared to a multilayer of graphene made from reduced graphene oxide (rGO) for immobilization of the aptamer on the gold surface of the physicochemical transducer. The best results have been obtained with CVD graphene. The dynamic range was between 1 and 100 μmol L-1 of kanamycin concentration (r2 = 0.9981, n = 7, r = 4), with a limit of detection of 285 nmol L-1 and a sampling frequency of 6 h-1. The precision, expressed as relative standard deviation (RSD%), was established in the range of 1.49 and 3.89%, calculated for 1, 10, and 50 μmol L-1. The selectivity was studied applying the described method to determine other antibiotics, obtaining no significant difference in the analytical signal. The method was applied to determine kanamycin residues in milk samples with recovery values ranging between 90 and 96%.
Collapse
Affiliation(s)
- Ángela Écija-Arenas
- Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN), Universidad de Córdoba, Campus de Rabanales, Edificio Anexo "Marie Curie", 14071, Córdoba, Spain
| | - Eva-Maria Kirchner
- Institute of Analytical Chemistry, Chemo and Biosensors, University of Regensburg, 93040, Regensburg, Germany
| | - Thomas Hirsch
- Institute of Analytical Chemistry, Chemo and Biosensors, University of Regensburg, 93040, Regensburg, Germany
| | - Juan Manuel Fernández-Romero
- Departamento de Química Analítica, Instituto Universitario de Investigación en Química Fina y Nanoquímica (IUNAN), Universidad de Córdoba, Campus de Rabanales, Edificio Anexo "Marie Curie", 14071, Córdoba, Spain.
| |
Collapse
|
4
|
Sampl C, Eyley S, Thielemans W, Hirn U, Spirk S. Real-time adsorption of optical brightening agents on cellulose thin films. Carbohydr Polym 2021; 261:117826. [PMID: 33766333 DOI: 10.1016/j.carbpol.2021.117826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/12/2021] [Accepted: 02/13/2021] [Indexed: 10/22/2022]
Abstract
Optical brightening agents (OBAs) are commonly used in textile and paper industry to adjust product brightness and color appearence. Continuous production processes lead to short residence time of the dyes in the fiber suspension, making it necessary to understand the kinetics of adsorption. The interaction mechanisms of OBAs with cellulose are challenging to establish as the fibrous nature of cellulosic substrates complicates acquisition of real-time data. Here, we explore the real-time adsorption of different OBAs (di, tetra- and hexasulfonated compounds) onto different cellulose surfaces using surface plasmon resonance spectroscopy. Ionic strength, surface topography and polarity were varied and yielded 0.76-11.35 mg m-2 OBA on cellulose. We identified four independent mechanisms governing OBA-cellulose interactions. These involve the polarity of the cellulose surface, the solubility of the OBA, the ionic strength during adsorption and presence of bivalent cations such as Ca2+. These results can be exploited for process optimization in related industries as they allow for a simple adjustment and experimental testing procedures including performance assessment of novel OBAs.
Collapse
Affiliation(s)
- Carina Sampl
- Graz University of Technology, Institute of Bioproducts and Paper Technology (BPTI), Inffeldgasse 23, 8010 Graz, Austria; CD-Laboratory for Fibre Swelling and Paper Performance, Inffeldgasse 23, 8010 Graz, Austria
| | - Samuel Eyley
- Sustainable Materials Lab, Department of Chemical Engineering, KU Leuven, Campus Kulak Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium
| | - Wim Thielemans
- Sustainable Materials Lab, Department of Chemical Engineering, KU Leuven, Campus Kulak Kortrijk, Etienne Sabbelaan 53, 8500 Kortrijk, Belgium
| | - Ulrich Hirn
- Graz University of Technology, Institute of Bioproducts and Paper Technology (BPTI), Inffeldgasse 23, 8010 Graz, Austria; CD-Laboratory for Fibre Swelling and Paper Performance, Inffeldgasse 23, 8010 Graz, Austria.
| | - Stefan Spirk
- Graz University of Technology, Institute of Bioproducts and Paper Technology (BPTI), Inffeldgasse 23, 8010 Graz, Austria; CD-Laboratory for Fibre Swelling and Paper Performance, Inffeldgasse 23, 8010 Graz, Austria
| |
Collapse
|
5
|
Sevcnikar B, Schaffner I, Chuang CY, Gamon L, Paumann-Page M, Hofbauer S, Davies MJ, Furtmüller PG, Obinger C. The leucine-rich repeat domain of human peroxidasin 1 promotes binding to laminin in basement membranes. Arch Biochem Biophys 2020; 689:108443. [PMID: 32485152 DOI: 10.1016/j.abb.2020.108443] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 01/09/2023]
Abstract
Human peroxidasin 1 (PXDN) is a homotrimeric multidomain heme peroxidase and essential for tissue development and architecture. It has a biosynthetic function and catalyses the hypobromous acid-mediated formation of specific covalent sulfilimine (SN) bonds, which cross-link type IV collagen chains in basement membranes. Currently, it is unknown whether and which domain(s) [i.e. leucine-rich repeat domain (LRR), immunoglobulin domains, peroxidase domain, von Willebrand factor type C domain] of PXDN interact with the polymeric networks of the extracellular matrix (ECM), and how these interactions integrate and regulate the enzyme's cross-linking activity, without imparting oxidative damage to the ECM. In this study, we probed the interactions of four PXDN constructs with different domain compositions with components of a basement membrane extract by immunoprecipitation. Strong binding of the LRR-containing construct was detected with the major ECM protein laminin. Analysis of these interactions by surface plasmon resonance spectroscopy revealed similar kinetics and affinities of binding of the LRR-containing construct to human and murine laminin-111, with calculated dissociation constants of 1.0 and 1.5 μM, respectively. The findings are discussed with respect to the recently published in-solution structures of the PXDN constructs and the proposed biological role of this peroxidase.
Collapse
|
6
|
Nelea V, Reinhardt DP. Biophysical Techniques to Analyze Elastic Tissue Extracellular Matrix Proteins Interacting with ADAMTS Proteins. Methods Mol Biol 2020; 2043:213-35. [PMID: 31463915 DOI: 10.1007/978-1-4939-9698-8_18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Multidomain matrix-associated zinc extracellular proteases ADAMTS and ADAMTS-like proteins have important biological activities in cells and tissues. Beyond their traditional role in procollagen and von Willebrand factor processing and proteoglycan cleavage, ADAMTS/ADAMTSL likely participate in or at least have some role in ECM assembly as some of these proteins bind ECM proteins including fibrillins, fibronectin, and LTBPs. In this chapter, we present four biophysical techniques largely used for the characterization, multimerization, and interaction of proteins: surface plasmon resonance spectroscopy, dynamic light scattering, atomic force microscopy, and circular dichroism spectroscopy.
Collapse
|
7
|
Wang WW, Han X, Chu LQ. Polyadenine-mediated Immobilization of Aptamers on a Gold Substrate for the Direct Detection of Bacterial Pathogens. ANAL SCI 2019; 35:967-972. [PMID: 31080198 DOI: 10.2116/analsci.19p110] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Nucleic acid aptamers have been widely used as synthetic probes for bioanalytical applications. Herein, we carried out a detailed study on the immobilization of a series of aptamers ranging from 37 to 88 bases, which are specific to either Escherichia coli (E. coli) or Staphylococcus aureus (S. aureus), on a planar gold substrate via a polyadenine-mediated immobilization method. The resultant surfaces were characterized by both surface plasmon resonance spectroscopy (SPR) and X-ray photoelectron spectroscopy. The results clearly show that the aptamer solution at a lower ionic strength gives rise to a higher lateral density of the aptamer when compared to that at a higher ionic strength. The SPR aptasensors are then employed for detecting their corresponding bacteria (i.e., E. coli and S. aureus, respectively). The data indicate that the SPR aptasensor with a higher density of aptamer exhibits a better capture of target bacteria.
Collapse
Affiliation(s)
- Wen-Wen Wang
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology
| | - Xiao Han
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology
| | - Li-Qiang Chu
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology
| |
Collapse
|
8
|
Zhang L, Shang P, Chen C, Zhou J, Zhu S. Surface Plasmon Resonance Spectroscopy for Detection of S-Nitrosylated Proteins. Methods Mol Biol 2018; 1747:103-11. [PMID: 29600454 DOI: 10.1007/978-1-4939-7695-9_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Protein S-nitrosylation, the NO-dependent regulatory mechanism, is a posttranslational modification of reactive cysteine thiols to form S-nitrosothiols. The biotin-switch technique (BST) has become a mainstay method for detection of S-nitrosylated proteins in biological samples. On the basis of BST, we describe a surface plasmon resonance (SPR) spectroscopy method for detecting S-nitrosylated proteins. This method can be applied for the indirect determination of S-nitrosylated proteins in biological samples.
Collapse
|
9
|
Di Noto G, Bugatti A, Zendrini A, Mazzoldi EL, Montanelli A, Caimi L, Rusnati M, Ricotta D, Bergese P. Merging colloidal nanoplasmonics and surface plasmon resonance spectroscopy for enhanced profiling of multiple myeloma-derived exosomes. Biosens Bioelectron 2015; 77:518-24. [PMID: 26469728 DOI: 10.1016/j.bios.2015.09.061] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 09/25/2015] [Accepted: 09/27/2015] [Indexed: 01/31/2023]
Abstract
A novel approach for sorting exosomes from multiple myeloma (MM), monoclonal gammopathy of undetermined significance (MGUS) and healthy individuals is presented. The method is based on the combination of colloidal gold nanoplasmonics and surface plasmon resonance (SPR) biosensing and probes distinctive colloidal properties of MM-derived exosomes, such as molar concentration and cell membrane binding preferences. It allowed to discover that MM patients produce about four folds more exosomes than MGUS and healthy individuals. In addition, it showed that among the analyzed exosomes, only the MM-derived ones bind heparin - a structural analog of heparan sulfate proteoglycans known to mediate exosome endocytosis - with an apparent dissociation constant (Kd) equal to about 1 nM, indicating a high affinity binding. This plasmonic method complements the classical biochemical profiling approach to exosomes, expanding the MM biomarker panel and adding biosensors to the toolbox to diagnose MM. It may find applications for other diseases and has wider interest for fundamental and translational research involving exosomes.
Collapse
Affiliation(s)
- Giuseppe Di Noto
- Department of Molecular and Translational Medicine and INSTM, University of Brescia, Viale Europa, 11, 25132 Brescia, Italy.
| | - Antonella Bugatti
- Department of Molecular and Translational Medicine and INSTM, University of Brescia, Viale Europa, 11, 25132 Brescia, Italy
| | - Andrea Zendrini
- Department of Molecular and Translational Medicine and INSTM, University of Brescia, Viale Europa, 11, 25132 Brescia, Italy
| | - Elena Laura Mazzoldi
- Department of Molecular and Translational Medicine and INSTM, University of Brescia, Viale Europa, 11, 25132 Brescia, Italy
| | - Alessandro Montanelli
- Spedali Civili of Brescia, Clinical Chemistry Laboratory, P.le Spedali Civili 1, 25123 Brescia, Italy
| | - Luigi Caimi
- Department of Molecular and Translational Medicine and INSTM, University of Brescia, Viale Europa, 11, 25132 Brescia, Italy
| | - Marco Rusnati
- Department of Molecular and Translational Medicine and INSTM, University of Brescia, Viale Europa, 11, 25132 Brescia, Italy
| | - Doris Ricotta
- Department of Molecular and Translational Medicine and INSTM, University of Brescia, Viale Europa, 11, 25132 Brescia, Italy
| | - Paolo Bergese
- Department of Molecular and Translational Medicine and INSTM, University of Brescia, Viale Europa, 11, 25132 Brescia, Italy.
| |
Collapse
|
10
|
Zheng X, Bi C, Li Z, Podariu M, Hage DS. Analytical methods for kinetic studies of biological interactions: A review. J Pharm Biomed Anal 2015; 113:163-80. [PMID: 25700721 PMCID: PMC4516701 DOI: 10.1016/j.jpba.2015.01.042] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 01/16/2015] [Accepted: 01/19/2015] [Indexed: 01/13/2023]
Abstract
The rates at which biological interactions occur can provide important information concerning the mechanism and behavior of these processes in living systems. This review discusses several analytical methods that can be used to examine the kinetics of biological interactions. These techniques include common or traditional methods such as stopped-flow analysis and surface plasmon resonance spectroscopy, as well as alternative methods based on affinity chromatography and capillary electrophoresis. The general principles and theory behind these approaches are examined, and it is shown how each technique can be utilized to provide information on the kinetics of biological interactions. Examples of applications are also given for each method. In addition, a discussion is provided on the relative advantages or potential limitations of each technique regarding its use in kinetic studies.
Collapse
Affiliation(s)
- Xiwei Zheng
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Cong Bi
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Zhao Li
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - Maria Podariu
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA
| | - David S Hage
- Department of Chemistry, University of Nebraska, Lincoln, NE 68588, USA.
| |
Collapse
|
11
|
Ragaliauskas T, Mickevicius M, Budvytyte R, Niaura G, Carbonnier B, Valincius G. Adsorption of β-amyloid oligomers on octadecanethiol monolayers. J Colloid Interface Sci 2014; 425:159-67. [PMID: 24776678 DOI: 10.1016/j.jcis.2014.03.042] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Revised: 03/14/2014] [Accepted: 03/15/2014] [Indexed: 10/25/2022]
Abstract
HYPOTHESIS β-Amyloid oligomers of different aggregation and physiological functions exhibit distinct adsorption behavior allowing them to be discriminated in preparations. EXPERIMENTS Two forms of amyloid oligomers, small 1-4 nm and large 5-10nm were formulated using synthetic 42 amino acids β-amyloid peptide. Forms differ in their size and physiological function. A systematic study of adsorption of these amyloid species on self-assembled monolayers of octadecanethiol on gold was performed. Structural changes upon adsorption of oligomers were interrogated by the reflection absorption infrared spectroscopy. FINDINGS The amount of adsorbed peptide material, as detected by surface plasmon resonance spectroscopy, is similar in case of both small and large oligomers. However, adsorption of small oligomers leads to a transformation from beta sheet rich to beta sheet depleted secondary structure. These changes were accompanied by the unique morphology patterns detectable by atomic force microscopy (AFM), while the quartz microbalance with dissipation indicated a formation of a compact adsorbate layer in case of small oligomers. These effects may be integrated and utilized in bioanalytical systems for sensing and detection of Alzheimer's disease related peptide forms in artificial, and possibly, real preparations.
Collapse
Affiliation(s)
- Tadas Ragaliauskas
- Institute of Biochemistry, Vilnius University, Mokslininku 12, LT-08662 Vilnius, Lithuania.
| | - Mindaugas Mickevicius
- Institute of Biochemistry, Vilnius University, Mokslininku 12, LT-08662 Vilnius, Lithuania.
| | - Rima Budvytyte
- Institute of Biochemistry, Vilnius University, Mokslininku 12, LT-08662 Vilnius, Lithuania.
| | - Gediminas Niaura
- Institute of Biochemistry, Vilnius University, Mokslininku 12, LT-08662 Vilnius, Lithuania.
| | - Benjamin Carbonnier
- Institut de Chimie et des Matériaux Paris-Est, Université Paris-Est, 2 rue Henri Dunant, 94320 Thiais, France.
| | - Gintaras Valincius
- Institute of Biochemistry, Vilnius University, Mokslininku 12, LT-08662 Vilnius, Lithuania.
| |
Collapse
|
12
|
Dietrich DE, Martin AD, Brogden KA. Human β-defensin HBD3 binds to immobilized Bla g2 from the German cockroach (Blattella germanica). Peptides 2014; 53:265-9. [PMID: 24495736 PMCID: PMC3992933 DOI: 10.1016/j.peptides.2014.01.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 01/21/2014] [Accepted: 01/21/2014] [Indexed: 01/28/2023]
Abstract
Human β-defensin 3 (HBD3) is a small, well-characterized peptide in mucosal secretions with broad antimicrobial activities and diverse innate immune functions. Among these functions is the ability of HBD3 to bind to antigens. In this study, we hypothesize that HBD3 binds to the allergen Bla g2 from the German cockroach (Blattella germanica). The ability of HBD1 (used as a control β-defensin) and HBD3 to bind to Bla g2 and human serum albumin (HSA, used as a control ligand) was assessed using the SensíQ Pioneer surface plasmon resonance (SPR) spectroscopy biosensor system. HBD1 was observed to bind weakly to Bla g2, while HBD3 demonstrated a stronger affinity for the allergen. HBD3 was assessed under two buffer conditions using 0.15 M and 0.3 M NaCl to control the electrostatic attraction of the peptide to the chip surface. The apparent K(D) of HBD3 binding Bla g2 was 5.9±2.1 μM and for binding HSA was 4.2±0.7 μM, respectively. Thus, HBD3, found in mucosal secretions has the ability to bind to allergens like Bla g2 possibly by electrostatic interaction, and may alter the ability of Bla g2 to induce localized allergic and/or inflammatory mucosal responses.
Collapse
Affiliation(s)
- Deborah E Dietrich
- Dows Institute for Dental Research, College of Dentistry, The University of Iowa, Iowa City, IA 52242, USA
| | - Aaron D Martin
- SensíQ Technologies Inc., 800 Research Parkway, Suite 100, Oklahoma City, OK 73104, USA
| | - Kim A Brogden
- Dows Institute for Dental Research, College of Dentistry, The University of Iowa, Iowa City, IA 52242, USA; Department of Periodontics and Dows Institute for Dental Research, N423 DSB, College of Dentistry, The University of Iowa, 801 Newton Road, Iowa City, IA 52242, USA.
| |
Collapse
|
13
|
Houseman BT, Mrksich M. The Role of Ligand Density in the Enzymatic Glycosylation of Carbohydrates Presented on Self-Assembled Monolayers of Alkanethiolates on Gold. Angew Chem Int Ed Engl 1999; 38:782-785. [PMID: 29711797 DOI: 10.1002/(sici)1521-3773(19990315)38:6<782::aid-anie782>3.0.co;2-n] [Citation(s) in RCA: 126] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/1998] [Indexed: 11/07/2022]
Abstract
The biological activity of immobilized carbohydrates can show a dramatic dependence on the density of carbohydrate. This is the result of investigations with self-assembled monolayers that present N-acetylglucosamine groups as a model substrate for glycosylation by bovine β-1,4-galactosyltransferase (GalTase; see picture). Surface plasmon resonance spectroscopy and carbohydrate-binding lectins were used to characterize the reaction at the interface. UDP-Gal=uridine diphosphogalactose.
Collapse
Affiliation(s)
- Benjamin T Houseman
- Department of Chemistry, The University of Chicago, Chicago, IL 60637 (USA), Fax: (+1) 773-702-0805
| | - Milan Mrksich
- Department of Chemistry, The University of Chicago, Chicago, IL 60637 (USA), Fax: (+1) 773-702-0805
| |
Collapse
|