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Rudra S, Mondal S, Chakraborty M, Swamy MJ, Jana T. Galactose Glycopolymer- Grafted Silica Nanoparticles: Synthesis and Binding Studies with Lectin. ACS APPLIED BIO MATERIALS 2024; 7:5689-5701. [PMID: 39116418 DOI: 10.1021/acsabm.4c00759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
Weak binding of carbohydrates with protein receptors possesses serious drawbacks in the advancement of therapeutics; however, the development of strategies for multipoint interactions between carbohydrates and protein can overcome these challenges. One such method is developed in this work where glycopolymer-grafted silica nanoparticles with a large number of carbohydrate units are prepared for the interactions with multiple binding sites of the protein. First, a glycomonomer, β-d-galactose-hydroxyethyl methacrylate (β-GEMA), was synthesized in a two-step process by coupling β-d-galactose pentaacetate and hydroxyethyl methacrylate (HEMA), followed by deacetylation for the preparation of poly(β-GEMA) glycopolymers (GPs). Further, the poly(β-GEMA) chains were grafted onto the silica nanoparticle (SiNP) surface by utilizing the "grafting-from" strategy of surface-initiated reversible addition-fragmentation chain transfer (RAFT) polymerization to prepare p(β-GEMA)-grafted SiNPs (GNPs). Five different chain lengths ranging from 10 to 40 kDa of the GPs and the GNPs were prepared, and various characterization techniques confirmed the formation of GPs and grafting of the GPs on the SiNP surface. The particle size of GNPs and the number of GPs grafted on the SiNP surface showed a strong dependence on the chain length of the GPs. Further, the GNPs were subjected to a binding study with β-galactose-specific protein peanut agglutinin (PNA). A much stronger binding in the case of GNPs was observed with an association constant ∼320 times and ∼53 times than that of the monomeric methyl-β-d-galactopyranoside and the GPs, respectively. Additionally, the binding of the PNA with GNPs and GPs was also studied with varying chain lengths to understand the effects of the chain length on the binding affinity. A clear increase in binding constants was observed in the case of GNPs with increasing chain length of grafted GPs, attributed to the enhanced enthalpic and entropic contributions. This work holds its uniqueness in these improved interactions between carbohydrates and proteins, which can be used for carbohydrate-based targeted therapeutics.
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Affiliation(s)
- Somdatta Rudra
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Saradamoni Mondal
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | | | - Musti J Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Tushar Jana
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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2
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Paranamana N, El Rassi Z. Precursor carboxy-silica for functionalization with interactive ligands. III. Carbodiimide assisted preparation of immobilized lectin stationary phases for high performance lectin affinity chromatography of sub-glycoproteomics from cancer and disease free human sera. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1233:123992. [PMID: 38199060 DOI: 10.1016/j.jchromb.2023.123992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/18/2023] [Accepted: 12/30/2023] [Indexed: 01/12/2024]
Abstract
In this study, a precursor carboxy-silica support was demonstrated in the immobilization of two different lectins, namely concanavalin A (Con A) and wheat germ agglutinin (WGA) for use in high performance lectin affinity chromatography (LAC) for the selective capturing and enrichment of glycoproteins from healthy/disease free and cancer human sera. The lectin columns thus obtained (i.e., Con A- and WGA-columns) showed no nonspecific interactions toward some chosen standard glycoproteins and non-glycoproteins. Both columns were shown in sub-glycoproteomics enrichment from human sera including disease free and adenocarcinoma cancer sera. The collected fractions were subjected to LC-MS/MS for identification of the captured glycoproteins, whereby the total number of identified proteins using Con A column from disease-free and cancer sera were 164 and 188, respectively while 133 and 103 proteins were identified in the fractions captured by the WGA column from disease-free and cancer sera samples, respectively. Differentially expressed proteins (DEPs) between the disease free and cancer sera in both the Con A and WGA column fractions were identified via the plot of the abundance vs. the protein ratio whereby the binary logarithm of average intensities of cancer and disease free sera were plotted against the binary logarithm of cancer/disease free sera ratios. The proteins that exhibit log 2 (cancer/healthy) ratio values greater than +2 and less than -2 in both categories are considered as DEPs. Furthermore, for visualization of the data arrangement, Q-Q scatterplot were also used whereby the binary logarithm of cancer serum was plotted against the binary logarithm of disease-free serum for both Con A and WGA. For Con A column, 28 up-regulated and 10 down regulated proteins were identified with a total of 38 DEPs while only two being non-glycoproteins. Furthermore, the up-regulated, and down regulated proteins recorded for WGA column are 14 and 6, respectively, totaling 20 proteins including 3 non-glycoproteins. Some of the non-specific binding to lectin are most likely due to protein-protein interactions.
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Affiliation(s)
- Nilushi Paranamana
- Department of Chemistry, Oklahoma State University, Stillwater, OK 74078-3071, United States
| | - Ziad El Rassi
- Department of Chemistry, Oklahoma State University, Stillwater, OK 74078-3071, United States.
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3
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Leusmann S, Ménová P, Shanin E, Titz A, Rademacher C. Glycomimetics for the inhibition and modulation of lectins. Chem Soc Rev 2023; 52:3663-3740. [PMID: 37232696 PMCID: PMC10243309 DOI: 10.1039/d2cs00954d] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Indexed: 05/27/2023]
Abstract
Carbohydrates are essential mediators of many processes in health and disease. They regulate self-/non-self- discrimination, are key elements of cellular communication, cancer, infection and inflammation, and determine protein folding, function and life-times. Moreover, they are integral to the cellular envelope for microorganisms and participate in biofilm formation. These diverse functions of carbohydrates are mediated by carbohydrate-binding proteins, lectins, and the more the knowledge about the biology of these proteins is advancing, the more interfering with carbohydrate recognition becomes a viable option for the development of novel therapeutics. In this respect, small molecules mimicking this recognition process become more and more available either as tools for fostering our basic understanding of glycobiology or as therapeutics. In this review, we outline the general design principles of glycomimetic inhibitors (Section 2). This section is then followed by highlighting three approaches to interfere with lectin function, i.e. with carbohydrate-derived glycomimetics (Section 3.1), novel glycomimetic scaffolds (Section 3.2) and allosteric modulators (Section 3.3). We summarize recent advances in design and application of glycomimetics for various classes of lectins of mammalian, viral and bacterial origin. Besides highlighting design principles in general, we showcase defined cases in which glycomimetics have been advanced to clinical trials or marketed. Additionally, emerging applications of glycomimetics for targeted protein degradation and targeted delivery purposes are reviewed in Section 4.
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Affiliation(s)
- Steffen Leusmann
- Chemical Biology of Carbohydrates (CBCH), Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, 66123 Saarbrücken, Germany.
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany
| | - Petra Ménová
- University of Chemistry and Technology, Prague, Technická 5, 16628 Prague 6, Czech Republic
| | - Elena Shanin
- Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, University of Vienna, Biocenter 5, 1030 Vienna, Austria
| | - Alexander Titz
- Chemical Biology of Carbohydrates (CBCH), Helmholtz-Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Centre for Infection Research, 66123 Saarbrücken, Germany.
- Department of Chemistry, Saarland University, 66123 Saarbrücken, Germany
- Deutsches Zentrum für Infektionsforschung (DZIF), Standort Hannover-Braunschweig, Germany
| | - Christoph Rademacher
- Department of Pharmaceutical Sciences, University of Vienna, Josef-Holaubek-Platz 2, 1090 Vienna, Austria.
- Department of Microbiology, Immunobiology and Genetics, Max F. Perutz Laboratories, University of Vienna, Biocenter 5, 1030 Vienna, Austria
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4
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Khan F, Kaza S. Crystal structure of an L-type lectin domain from archaea. Proteins 2023; 91:456-465. [PMID: 36301308 DOI: 10.1002/prot.26440] [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: 06/29/2022] [Revised: 09/26/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022]
Abstract
The crystal structures of an L-type lectin domain from Methanocaldococcus jannaschii in apo and mannose-bound forms have been determined. A thorough investigation of L-type lectin domains from several organisms provides insight into the differences in these domains from different kingdoms of life. While the overall fold of the L-type lectin domain is conserved, differences in the lengths of the carbohydrate-binding loops and significant variations in the Mn2+ -binding site compared to the Ca2+ -binding site are observed. Furthermore, the sequence and phylogenetic analyses suggest that the archaeal L-type lectin domain is evolutionarily closer to the plant legume lectins than to its bacterial or animal counterparts. This is the first report of the biochemical, structural, sequence, and phylogenetic analyses of an L-type lectin domain from archaea and serves to enhance our understanding of the species-specific differences and evolution of L-type lectin domains.
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Affiliation(s)
- Farha Khan
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, Karnataka, India
| | - Suguna Kaza
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, Karnataka, India
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5
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Schwab JH, Bailey JB, Gembicky M, Stauber JM. Programmable synthesis of well-defined, glycosylated iron(ii) supramolecular assemblies with multivalent protein-binding capabilities. Chem Sci 2023; 14:1018-1026. [PMID: 36755719 PMCID: PMC9890585 DOI: 10.1039/d2sc05689e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 12/20/2022] [Indexed: 12/24/2022] Open
Abstract
Multivalency plays a key role in achieving strong, yet reversible interactions in nature, and provides critical chemical organization in biological recognition processes. Chemists have taken an interest in designing multivalent synthetic assemblies to both better understand the underlying principles governing these interactions, and to build chemical tools that either enhance or prevent such recognition events from occurring in biology. Rationally tailoring synthetic strategies to achieve the high level of chemical control and tunability required to mimic these interactions, however, is challenging. Here, we introduce a systematic and modular synthetic approach to the design of well-defined molecular multivalent protein-binding constructs that allows for control over size, morphology, and valency. A series of supramolecular mono-, bi-, and tetrametallic Fe(ii) complexes featuring a precise display of peripheral saccharides was prepared through coordination-driven self-assembly from simple building blocks. The molecular assemblies are fully characterized, and we present the structural determination of one complex in the series. The mannose and maltose-appended assemblies display strong multivalent binding to model lectin, Concanavalin A (K d values in μM), where the strength of the binding is a direct consequence of the number of saccharide units decorating the molecular periphery. This versatile synthetic strategy provides chemical control while offering an easily accessible approach to examine important design principles governing structure-function relationships germane to biological recognition and binding properties.
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Affiliation(s)
- Jake H. Schwab
- Department of Chemistry and Biochemistry, University of California9500 Gilman Dr, La JollaSan DiegoCAUSA
| | - Jake B. Bailey
- Department of Chemistry and Biochemistry, University of California9500 Gilman Dr, La JollaSan DiegoCAUSA
| | - Milan Gembicky
- Department of Chemistry and Biochemistry, University of California 9500 Gilman Dr, La Jolla San Diego CA USA
| | - Julia M. Stauber
- Department of Chemistry and Biochemistry, University of California9500 Gilman Dr, La JollaSan DiegoCAUSA
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6
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Charlesworth K, van Heijst N, Maxwell A, Baylis B, Grossutti M, Leitch JJ, Dutcher JR. Binding Affinity of Concanavalin A to Native and Acid-Hydrolyzed Phytoglycogen Nanoparticles. Biomacromolecules 2022; 23:4778-4785. [PMID: 36252236 DOI: 10.1021/acs.biomac.2c00951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Phytoglycogen (PG) is a polysaccharide produced in the kernels of sweet corn as soft, highly branched, compact nanoparticles. Its tree-like or dendritic architecture, combined with a high-safety profile, makes PG nanoparticles attractive for use in biological applications, many of which rely on the association or binding of small biomolecules. We have developed a methodology to functionalize surface plasmon resonance (SPR) sensor surfaces with PG nanoparticles, and we demonstrate the utility of the PG-functionalized SPR sensor by measuring the binding affinity of the tetrameric concanavalin A (ConA) protein to both native PG nanoparticles and smaller, softer acid-hydrolyzed PG nanoparticles. We measure comparable values of the equilibrium association constant K for native and acid-hydrolyzed PG, with a slightly smaller value for the acid-hydrolyzed particles that we attribute to unfavorable lateral interactions between the tetrameric subunits of ConA due to the increase in surface curvature of the smaller acid-hydrolyzed PG particles. We also use infrared reflection-absorption spectroscopy (IRRAS) to show that ConA maintains a large fraction of its native conformation, and thus its bioactivity, upon binding to PG, representing an important step toward the realization of PG as a novel bioactive delivery vehicle.
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Affiliation(s)
| | | | - Aidan Maxwell
- Department of Physics, University of Guelph, Guelph, Ontario, CanadaN1G 2W1
| | - Benjamin Baylis
- Department of Physics, University of Guelph, Guelph, Ontario, CanadaN1G 2W1
| | - Michael Grossutti
- Department of Physics, University of Guelph, Guelph, Ontario, CanadaN1G 2W1
| | - J Jay Leitch
- Department of Physics, University of Guelph, Guelph, Ontario, CanadaN1G 2W1
| | - John R Dutcher
- Department of Physics, University of Guelph, Guelph, Ontario, CanadaN1G 2W1
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Piccinini E, Fenoy GE, Cantillo AL, Allegretto JA, Scotto J, Piccinini JM, Marmisollé WA, Azzaroni O. Biofunctionalization of Graphene-Based FET Sensors through Heterobifunctional Nanoscaffolds: Technology Validation toward Rapid COVID-19 Diagnostics and Monitoring. ADVANCED MATERIALS INTERFACES 2022; 9:2102526. [PMID: 35538925 PMCID: PMC9073996 DOI: 10.1002/admi.202102526] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 02/04/2022] [Indexed: 05/09/2023]
Abstract
The biofunctionalization of graphene field-effect transistors (GFETs) through vinylsulfonated-polyethyleneimine nanoscaffold is presented for enhanced biosensing of severe acute respiratory-related coronavirus 2 (SARS-CoV-2) spike protein and human ferritin, two targets of great importance for the rapid diagnostic and monitoring of individuals with COVID-19. The heterobifunctional nanoscaffold enables covalent immobilization of binding proteins and antifouling polymers while the whole architecture is attached to graphene by multivalent π-π interactions. First, to optimize the sensing platform, concanavalin A is employed for glycoprotein detection. Then, monoclonal antibodies specific against SARS-CoV-2 spike protein and human ferritin are anchored, yielding biosensors with limit of detections of 0.74 and 0.23 nm, and apparent affinity constants (K D G F E T ) of 6.7 and 8.8 nm, respectively. Both biosensing platforms show good specificity, fast time response, and wide dynamic range (0.1-100 nm). Moreover, SARS-CoV-2 spike protein is also detected in spiked nasopharyngeal swab samples. To rigorously validate this biosensing technology, the GFET response is matched with surface plasmon resonance measurements, exhibiting linear correlations (from 2 to 100 ng cm-2) and good agreement in terms of K D values. Finally, the performance of the biosensors fabricated through the nanoscaffold strategy is compared with those obtained through the widely employed monopyrene approach, showing enhanced sensitivity.
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Affiliation(s)
- Esteban Piccinini
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Departamento de Química, Facultad de Ciencias ExactasUniversidad Nacional de La Plata (UNLP)CONICET. 64 and 113Buenos Aires1900Argentina
| | - Gonzalo E. Fenoy
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Departamento de Química, Facultad de Ciencias ExactasUniversidad Nacional de La Plata (UNLP)CONICET. 64 and 113Buenos Aires1900Argentina
| | - Agustín L. Cantillo
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Departamento de Química, Facultad de Ciencias ExactasUniversidad Nacional de La Plata (UNLP)CONICET. 64 and 113Buenos Aires1900Argentina
- GISENS BIOTECHBuenos AiresC1414BPVArgentina
| | - Juan A. Allegretto
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Departamento de Química, Facultad de Ciencias ExactasUniversidad Nacional de La Plata (UNLP)CONICET. 64 and 113Buenos Aires1900Argentina
| | - Juliana Scotto
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Departamento de Química, Facultad de Ciencias ExactasUniversidad Nacional de La Plata (UNLP)CONICET. 64 and 113Buenos Aires1900Argentina
| | | | - Waldemar A. Marmisollé
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Departamento de Química, Facultad de Ciencias ExactasUniversidad Nacional de La Plata (UNLP)CONICET. 64 and 113Buenos Aires1900Argentina
| | - Omar Azzaroni
- Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA)Departamento de Química, Facultad de Ciencias ExactasUniversidad Nacional de La Plata (UNLP)CONICET. 64 and 113Buenos Aires1900Argentina
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8
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Nabi-Afjadi M, Heydari M, Zalpoor H, Arman I, Sadoughi A, Sahami P, Aghazadeh S. Lectins and lectibodies: potential promising antiviral agents. Cell Mol Biol Lett 2022; 27:37. [PMID: 35562647 PMCID: PMC9100318 DOI: 10.1186/s11658-022-00338-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/21/2022] [Indexed: 12/30/2022] Open
Abstract
In nature, lectins are widely dispersed proteins that selectively recognize and bind to carbohydrates and glycoconjugates via reversible bonds at specific binding sites. Many viral diseases have been treated with lectins due to their wide range of structures, specificity for carbohydrates, and ability to bind carbohydrates. Through hemagglutination assays, these proteins can be detected interacting with various carbohydrates on the surface of cells and viral envelopes. This review discusses the most robust lectins and their rationally engineered versions, such as lectibodies, as antiviral proteins. Fusion of lectin and antibody’s crystallizable fragment (Fc) of immunoglobulin G (IgG) produces a molecule called a “lectibody” that can act as a carbohydrate-targeting antibody. Lectibodies can not only bind to the surface glycoproteins via their lectins and neutralize and clear viruses or infected cells by viruses but also perform Fc-mediated antibody effector functions. These functions include complement-dependent cytotoxicity (CDC), antibody-dependent cell-mediated cytotoxicity (ADCC), and antibody-dependent cell-mediated phagocytosis (ADCP). In addition to entering host cells, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein S1 binds to angiotensin-converting enzyme 2 (ACE2) and downregulates it and type I interferons in a way that may lead to lung disease. The SARS-CoV-2 spike protein S1 and human immunodeficiency virus (HIV) envelope are heavily glycosylated, which could make them a major target for developing vaccines, diagnostic tests, and therapeutic drugs. Lectibodies can lead to neutralization and clearance of viruses and cells infected by viruses by binding to glycans located on the envelope surface (e.g., the heavily glycosylated SARS-CoV-2 spike protein).
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Affiliation(s)
- Mohsen Nabi-Afjadi
- Department of Biochemistry, Faculty of Biological Science, Tarbiat Modares University, Tehran, Iran
| | - Morteza Heydari
- Institute of Biochemistry and Biophysics, University of Tehran, Tehran, 13145-1384, Iran
| | - Hamidreza Zalpoor
- Shiraz Neuroscience Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Network of Immunity in Infection, Malignancy and Autoimmunity (NIIMA), Universal Scientific Education and Research Network (USERN), Tehran, Iran.,American Association of Kidney Patients, Tampa, FL, USA
| | - Ibrahim Arman
- Department of Molecular Biology and Genetics, Faculty of Sciences and Arts, Zonguldak Bulent Ecevit University, Zonguldak, Turkey
| | - Arezoo Sadoughi
- Department of Immunology, International Campus, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Parisa Sahami
- Medical Biology Research Center, Health Technologies Institute, Kermanshah University of Medical Sciences (KUMS), Kermanshah, Iran
| | - Safiyeh Aghazadeh
- Division of Biochemistry, Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, 5756151818, Iran.
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9
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Grabowska K, Macur K, Zieschang S, Zaman L, Haverland N, Schissel A, Morsey B, Fox HS, Ciborowski P. HIV-1 and methamphetamine alter galectins -1, -3, and -9 in human monocyte-derived macrophages. J Neurovirol 2022; 28:99-112. [PMID: 35175539 PMCID: PMC9076712 DOI: 10.1007/s13365-021-01025-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 09/30/2021] [Accepted: 10/27/2021] [Indexed: 12/05/2022]
Abstract
Macrophages are key elements of the innate immune system. Their HIV-1 infection is a complex process that involves multiple interacting factors and various steps and is further altered by exposure of infected cells to methamphetamine (Meth), a common drug of abuse in people living with HIV. This is reflected by dynamic changes in the intracellular and secreted proteomes of these cells. Quantification of these changes poses a challenge for experimental design and associated analytics. In this study, we measured the effect of Meth on expression of intracellular and secreted galectins-1, -3, and -9 in HIV-1 infected human monocyte-derived macrophages (hMDM) using SWATH-MS, which was further followed by MRM targeted mass spectrometry validation. Cells were exposed to Meth either prior to or after infection. Our results are the first to perform comprehensive quantifications of galectins in primary hMDM cells during HIV-1 infection and Meth exposure a building foundation for future studies on the molecular mechanisms underlying cellular pathology of hMDM resulting from viral infection and a drug of abuse—Meth.
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Affiliation(s)
- Kinga Grabowska
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA.,Laboratory of Virus Molecular Biology, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, Gdańsk, Poland
| | - Katarzyna Macur
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA.,Core Facility Laboratories, Intercollegiate Faculty of Biotechnology, University of Gdańsk and Medical University of Gdańsk, Gdańsk, Poland
| | - Sarah Zieschang
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Lubaba Zaman
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Nicole Haverland
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Andrew Schissel
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Brenda Morsey
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Howard S Fox
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Pawel Ciborowski
- Department of Pharmacology and Experimental Neuroscience, School of Medicine, University of Nebraska Medical Center, Omaha, NE, USA.
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10
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Logette E, Lorin C, Favreau C, Oshurko E, Coggan JS, Casalegno F, Sy MF, Monney C, Bertschy M, Delattre E, Fonta PA, Krepl J, Schmidt S, Keller D, Kerrien S, Scantamburlo E, Kaufmann AK, Markram H. A Machine-Generated View of the Role of Blood Glucose Levels in the Severity of COVID-19. Front Public Health 2021; 9:695139. [PMID: 34395368 PMCID: PMC8356061 DOI: 10.3389/fpubh.2021.695139] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/30/2021] [Indexed: 01/08/2023] Open
Abstract
SARS-CoV-2 started spreading toward the end of 2019 causing COVID-19, a disease that reached pandemic proportions among the human population within months. The reasons for the spectrum of differences in the severity of the disease across the population, and in particular why the disease affects more severely the aging population and those with specific preconditions are unclear. We developed machine learning models to mine 240,000 scientific articles openly accessible in the CORD-19 database, and constructed knowledge graphs to synthesize the extracted information and navigate the collective knowledge in an attempt to search for a potential common underlying reason for disease severity. The machine-driven framework we developed repeatedly pointed to elevated blood glucose as a key facilitator in the progression of COVID-19. Indeed, when we systematically retraced the steps of the SARS-CoV-2 infection, we found evidence linking elevated glucose to each major step of the life-cycle of the virus, progression of the disease, and presentation of symptoms. Specifically, elevations of glucose provide ideal conditions for the virus to evade and weaken the first level of the immune defense system in the lungs, gain access to deep alveolar cells, bind to the ACE2 receptor and enter the pulmonary cells, accelerate replication of the virus within cells increasing cell death and inducing an pulmonary inflammatory response, which overwhelms an already weakened innate immune system to trigger an avalanche of systemic infections, inflammation and cell damage, a cytokine storm and thrombotic events. We tested the feasibility of the hypothesis by manually reviewing the literature referenced by the machine-generated synthesis, reconstructing atomistically the virus at the surface of the pulmonary airways, and performing quantitative computational modeling of the effects of glucose levels on the infection process. We conclude that elevation in glucose levels can facilitate the progression of the disease through multiple mechanisms and can explain much of the differences in disease severity seen across the population. The study provides diagnostic considerations, new areas of research and potential treatments, and cautions on treatment strategies and critical care conditions that induce elevations in blood glucose levels.
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Affiliation(s)
- Emmanuelle Logette
- Blue Brain Project, École polytechnique fédérale de Lausanne (EPFL), Geneva, Switzerland
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Henry Markram
- Blue Brain Project, École polytechnique fédérale de Lausanne (EPFL), Geneva, Switzerland
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11
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Martínez JD, Manzano AI, Calviño E, Diego AD, Rodriguez de Francisco B, Romanò C, Oscarson S, Millet O, Gabius HJ, Jiménez-Barbero J, Cañada FJ. Fluorinated Carbohydrates as Lectin Ligands: Simultaneous Screening of a Monosaccharide Library and Chemical Mapping by 19F NMR Spectroscopy. J Org Chem 2020; 85:16072-16081. [PMID: 33258593 PMCID: PMC7773211 DOI: 10.1021/acs.joc.0c01830] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Indexed: 02/06/2023]
Abstract
Molecular recognition of carbohydrates is a key step in essential biological processes. Carbohydrate receptors can distinguish monosaccharides even if they only differ in a single aspect of the orientation of the hydroxyl groups or harbor subtle chemical modifications. Hydroxyl-by-fluorine substitution has proven its merits for chemically mapping the importance of hydroxyl groups in carbohydrate-receptor interactions. 19F NMR spectroscopy could thus be adapted to allow contact mapping together with screening in compound mixtures. Using a library of fluorinated glucose (Glc), mannose (Man), and galactose (Gal) derived by systematically exchanging every hydroxyl group by a fluorine atom, we developed a strategy combining chemical mapping and 19F NMR T2 filtering-based screening. By testing this strategy on the proof-of-principle level with a library of 13 fluorinated monosaccharides to a set of three carbohydrate receptors of diverse origin, i.e. the human macrophage galactose-type lectin, a plant lectin, Pisum sativum agglutinin, and the bacterial Gal-/Glc-binding protein from Escherichia coli, it became possible to simultaneously define their monosaccharide selectivity and identify the essential hydroxyls for interaction.
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Affiliation(s)
- J. Daniel Martínez
- CIC
bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology Park, Building 800, 48160 Derio, Spain
| | - Ana I. Manzano
- Centro
de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Eva Calviño
- Centro
de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | - Ana de Diego
- Centro
de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
| | | | - Cecilia Romanò
- Centre
for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Stefan Oscarson
- Centre
for Synthesis and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Oscar Millet
- CIC
bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology Park, Building 800, 48160 Derio, Spain
| | - Hans-Joachim Gabius
- Institute
of Physiological Chemistry, Faculty of Veterinary Medicine, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Jesús Jiménez-Barbero
- CIC
bioGUNE, Basque Research Technology Alliance, BRTA, Bizkaia Technology Park, Building 800, 48160 Derio, Spain
- Ikerbasque,
Basque Foundation for Science, 48009 Bilbao, Spain
- Department
of Organic Chemistry II, Faculty of Science and Technology, UPV-EHU, 48940 Leioa, Spain
| | - Francisco J. Cañada
- Centro
de Investigaciones Biológicas Margarita Salas, CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain
- Centro
de Investigación Biomédica en Red-Enfermedades Respiratorias
(CIBERES), Avda Monforte
de Lemos 3-5, 28029 Madrid, Spain
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12
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Kasai K. Frontal affinity chromatography: An excellent method of analyzing weak biomolecular interactions based on a unique principle. Biochim Biophys Acta Gen Subj 2020; 1865:129761. [PMID: 33086119 DOI: 10.1016/j.bbagen.2020.129761] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Not only strong biomolecular interactions but also weak interactions play important roles in ensuring appropriate operations of many biological systems. Although a thorough investigation of the latter is essential in understanding life science, few suitable research tools are available because of inherent difficulties. SCOPE OF REVIEW Frontal affinity chromatography (FAC) is a versatile method that overcomes the inherent difficulties to provide accurate information on weak interactions. Since its concept and merit are not widely recognized, a comprehensive interpretation of FAC is provided in this review to encourage its application among researchers. MAJOR CONCLUSION FAC is based on a unique principle of measuring the binding strength by the delayed migration of an analyte through an affinity column. Its utility was elucidated via the lectin-glycan interactions. GENERAL SIGNIFICANCE FAC has a great potential as a research tool to solve many difficult problems in general bioscience that are relevant to almost all researchers.
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Affiliation(s)
- Kenichi Kasai
- Teikyo University, 2-11-1 Kaga, Itabashiku, Tokyo 1738605, Japan.
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13
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Sivaji N, Suguna K, Surolia A, Vijayan M. Structural and related studies on Mevo lectin from Methanococcus voltae A3: the first thorough characterization of an archeal lectin and its interactions. Glycobiology 2020; 31:315-328. [PMID: 32651948 DOI: 10.1093/glycob/cwaa063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 07/01/2020] [Indexed: 12/15/2022] Open
Abstract
Crystallographic and solution studies of Mevo lectin and its complexes, the first effort of its kind on an archeal lectin, reveal a structure similar to β-prism I fold lectins from plant and animal sources, but with a quaternary association involving a ring structure with seven-fold symmetry. Each subunit in the heptamer carries one sugar binding site on the first Greek key motif. The oligomeric interface is primarily made up of a parallel β-sheet involving a strand of Greek key I of one subunit and Greek key ΙΙΙ from a neighboring subunit. The crystal structures of the complexes of the lectin with mannose, αMan(1,2)αMan, αMan(1,3)αMan, a mannotriose and a mannopentose revealed a primary binding site similar to that found in other mannose specific β-prism I fold lectins. The complex with αMan(1,3)αMan provides an interesting case in which a few subunits have the reducing end at the primary binding site, while the majority have the nonreducing end at the primary binding site. The structures of complexes involving the trisaccharide and the pentasaccharide exhibit cross-linking among heptameric molecules. The observed arrangements may be relevant to the multivalency of the lectin. Phylogenetic analysis of amino acid sequences indicates that Mevo lectin is closer to β-prism I fold animal lectins than with those of plant origin. The results presented here reinforce the conclusion regarding the existence of lectins in all three domains of life. It would also appear that lectins evolved to the present form before the three domains diverged.
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Affiliation(s)
- Nukathoti Sivaji
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
| | - Kaza Suguna
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
| | - Avadhesha Surolia
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
| | - Mamannamana Vijayan
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India
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14
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Siirilä J, Hietala S, Ekholm FS, Tenhu H. Glucose and Maltose Surface-Functionalized Thermoresponsive Poly( N-Vinylcaprolactam) Nanogels. Biomacromolecules 2020; 21:955-965. [PMID: 31917581 PMCID: PMC7497634 DOI: 10.1021/acs.biomac.9b01596] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Soft nanoparticles are interesting materials due to their size, deformability, and ability to host guest molecules. Surface properties play an essential role in determining the fate of the particles in biological medium, and coating of the nanoparticles (and polymers) with carbohydrates has been found to be an efficient strategy for increasing their biocompatibility and fine-tuning other important properties such as aqueous solubility. In this work, soft nanogels of poly(N-vinylcaprolactam), PNVCL, were surface-functionalized with different glucose and maltose ligands, and the colloidal properties of the gels were analyzed. The PNVCL nanogels were first prepared via semibatch precipitation polymerization, where a comonomer, propargyl acrylate (PA), was added after preparticle formation. The aim was to synthesize "clickable" nanogels with alkyne groups on their surfaces. The nanogels were then functionalized with two separate azido-glucosides and azido-maltosides (containing different linkers) through a copper-catalyzed azide-alkyne cycloaddition (CuAAc) click reaction. The glucose and maltose bearing nanogels were thermoresponsive and shrank upon heating. Compared to the PNVCL-PA nanogel, the carbohydrate bearing ones were larger, more hydrophilic, had volume phase transitions at higher temperatures, and were more stable against salt-induced precipitation. In addition to investigating the colloidal properties of the nanogels, the carbohydrate recognition was addressed by studying the interactions with a model lectin, concanavalin A (Con A). The binding efficiency was not affected by the temperature, which indicates that the carbohydrate moieties are located on the gel surfaces, and are capable of interacting with other biomolecules independent of temperature. Thus, the synthesis produces nanogels, which have surface functions capable of biorelevant interactions and a thermoresponsive structure. These types of particles can be used for drug delivery.
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Affiliation(s)
- Joonas Siirilä
- Department of Chemistry , University of Helsinki , 00014 Helsinki , Finland
| | - Sami Hietala
- Department of Chemistry , University of Helsinki , 00014 Helsinki , Finland
| | - Filip S Ekholm
- Department of Chemistry , University of Helsinki , 00014 Helsinki , Finland
| | - Heikki Tenhu
- Department of Chemistry , University of Helsinki , 00014 Helsinki , Finland
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15
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Alaei L, Moosavi-Movahedi AA. Stability of multi-subunit proteins and conformational lock. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2020; 150:145-152. [DOI: 10.1016/j.pbiomolbio.2019.08.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/17/2019] [Accepted: 08/21/2019] [Indexed: 12/24/2022]
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16
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Gordon CKL, Wu D, Pusuluri A, Feagin TA, Csordas AT, Eisenstein MS, Hawker CJ, Niu J, Soh HT. Click-Particle Display for Base-Modified Aptamer Discovery. ACS Chem Biol 2019; 14:2652-2662. [PMID: 31532184 PMCID: PMC6929039 DOI: 10.1021/acschembio.9b00587] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Base-modified aptamers
that incorporate non-natural chemical moieties
can achieve greatly improved affinity and specificity relative to
natural DNA or RNA aptamers. However, conventional methods for generating
base-modified aptamers require considerable expertise and resources.
In this work, we have accelerated and generalized the process of generating
base-modified aptamers by combining a click-chemistry strategy with
a fluorescence-activated cell sorting (FACS)-based screening methodology
that measures the affinity and specificity of individual aptamers
at a throughput of ∼107 per hour. Our “click-particle
display (PD)” strategy offers many advantages. First, almost
any chemical modification can be introduced with a commercially available
polymerase. Second, click-PD can screen vast numbers of individual
aptamers on the basis of quantitative on- and off-target binding measurements
to simultaneously achieve high affinity and specificity. Finally,
the increasing availability of FACS instrumentation in academia and
industry allows for easy adoption of click-PD in a broader scientific
community. Using click-PD, we generated a boronic acid-modified aptamer
with ∼1 μM affinity for epinephrine, a target for which
no aptamer has been reported to date. We subsequently generated a
mannose-modified aptamer with nanomolar affinity for the lectin concanavalin
A (Con A). The strong affinity of both aptamers is fundamentally dependent
upon the presence of chemical modifications, and we show that their
removal essentially eliminates aptamer binding. Importantly, our Con
A aptamer exhibited exceptional specificity, with minimal binding
to other structurally similar lectins. Finally, we show that our aptamer
has remarkable biological activity. Indeed, this aptamer is the most
potent inhibitor of Con A-mediated hemagglutination reported to date.
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Affiliation(s)
| | | | | | | | | | | | | | - Jia Niu
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Hyongsok Tom Soh
- Chan Zuckerberg Biohub, San Francisco, California 94158, United States
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17
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Chandran T, Sivaji N, Surolia A, Vijayan M. Ligand binding and retention in snake gourd seed lectin (SGSL). A crystallographic, thermodynamic and molecular dynamics study. Glycobiology 2018; 28:968-977. [PMID: 30099481 DOI: 10.1093/glycob/cwy072] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 08/06/2018] [Indexed: 11/14/2022] Open
Abstract
Snake gourd seed lectin (SGSL) is a non-toxic homolog of type II ribosome-inactivating proteins (RIPs) which contain a catalytic domain and a lectin domain. Isothermal titration calorimetry (ITC) measurements of the interactions of the protein with LacNAc, Lac, Gal, Me-α-Gal were carried out and the crystal structures of the native protein and its complex with Lac were determined. The crystal structure of the Me-α-Gal complex has already been determined. While the crystal structure showed the presence of two-sugar-binding sites, one on each of the two domains of the lectin chain, ITC measurements indicated the presence of only one binding site. In order to resolve this anomaly, molecular dynamics (MD) simulations were carried out on the native protein and on its complexes with Me-α-Gal and Lac. Simulations were also performed on the protein after reducing the inter-chain disulfide bridge between the two chains. The crystal structures and the simulations confirmed the robustness of the protein structure, irrespective of the presence or absence of the disulfide bridge. The simulations indicated that although two sites can bind sugar, only the ligand at one site is retained in a dynamic situation. The studies thus bring out the subtle relationship between binding and retention of the ligand.
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Affiliation(s)
| | - Nukathoti Sivaji
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, India
| | - Avadhesha Surolia
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore, India
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18
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Kammer MN, Kussrow AK, Olmsted IR, Bornhop DJ. A Highly Compensated Interferometer for Biochemical Analysis. ACS Sens 2018; 3:1546-1552. [PMID: 29984991 DOI: 10.1021/acssensors.8b00361] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Here we report an improved interferometric sensing approach that facilitates high sensitivity nanovolume refractive index (RI) measurements and molecular interaction assays without a temperature controller. The compensated backscattering interferometer (CBSI) is based on a helium-neon (He-Ne) laser, a microfluidic chip, and a CCD array. The CBSI enables simultaneous differential RI measurements within nanoliter volumes, at a compensation level of ca. 5 × 10-8 RIU in the presence of large thermal perturbations (8 °C). This level of d n/d T compensation is enabled by elongating the laser beam along the central axis of the microfluidic channel and measuring the difference in positional shift of interference patterns from two adjacent regions of the channel. By separating two solutions by an air gap or oil droplet, CBSI can discriminate the difference in RI for the sample and reference at a detection limit of 7 × 10-7 RIU in the absence of electronic filtering. At this level of ΔRI sensitivity, it is possible to perform label-free, free-solution biochemical assays at the 10s of nM level without the typical high-resolution temperature control needed in conventional interferometers. Here we illustrate the effective use of CBSI by quantifying the binding affinities for mannose-concanavalin A and Ca2+-recoverin interactions.
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Affiliation(s)
- Michael N. Kammer
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
- Department of Biomedical Engineering, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Amanda K. Kussrow
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ian R. Olmsted
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Darryl J. Bornhop
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
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19
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Xiao R, Zeng J, Grinstaff MW. Biologically Active Branched Polysaccharide Mimetics: Synthesis via Ring-Opening Polymerization of a Maltose-Based β-Lactam. ACS Macro Lett 2018; 7:772-777. [PMID: 35650766 DOI: 10.1021/acsmacrolett.8b00302] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Stereoregular poly-amido-saccharides bearing α-glucopyranose branches (Mal-PASs) are synthesized by anionic ring-opening polymerization of a maltose-based β-lactam monomer followed by debenzylation. The polymerization affords high molecular weight polymers (up to 31500 g/mol) with narrow dispersities (Đ < 1.1). Deprotected Mal-PASs are highly soluble in water and adopt a left-handed helical conformation in solution. Turbidimetric assay shows that Mal-PASs are multivalent ligands to lectin Concanavalin A.
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20
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Abstract
"Glycoreplica peptides" are prepared using a phage display peptide library and monoclonal antibodies that recognize the carbohydrate epitopes of glycoconjugate antigens. The peptides obtained not only mimic the shapes of original glycoconjugate antigens but also have some of their functions. We herein describe how to identify the amino acid alignments of glycoreplica peptides using phage display selection against carbohydrate-binding proteins. Target-specific peptides and proteins may be selected from the large repertory of a peptide/protein library using phage display technology. Glycoreplica peptides have the potential to become alternatives to carbohydrate ligands such as mimotopes for vaccinations and carbohydrate-derived drugs for carbohydrate-related diseases.
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21
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Ota E, Usui K, Oonuma K, Koshino H, Nishiyama S, Hirai G, Sodeoka M. Thienyl-Substituted α-Ketoamide: A Less Hydrophobic Reactive Group for Photo-Affinity Labeling. ACS Chem Biol 2018; 13:876-880. [PMID: 29457885 DOI: 10.1021/acschembio.7b00988] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Photoaffinity labeling (PAL) is an important tool in chemical biology research, but application of α-ketoamides for PAL has been hampered by their photoinstability. Here, we show that 2-thienyl-substituted α-ketoamide is a superior photoreactive group for PAL. Studies with a series of synthetic mannose-conjugated α-ketoamides revealed that 2-thienyl substitution of α-ketoamide decreased the electrophilicity of the keto group and reduced the rate of photodegradation. Mannose-conjugated thienyl α-ketoamide showed greater concanavalin A labeling efficiency than other alkyl or phenyl-substituted α-ketoamides. In comparison with representative conventional photoreactive groups, 2-thienyl ketoamide showed reduced labeling of nontarget proteins, probably owing to its lower hydrophobicity.
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Affiliation(s)
- Eisuke Ota
- Synthetic Organic Chemistry Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
- Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
| | - Kazuteru Usui
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi Higashi-ku, Fukuoka 812-8582, Japan
| | - Kana Oonuma
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Hiroyuki Koshino
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Shigeru Nishiyama
- Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522, Japan
| | - Go Hirai
- Synthetic Organic Chemistry Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi Higashi-ku, Fukuoka 812-8582, Japan
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
- AMED-CREST, Wako, Saitama 351-0198, Japan
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22
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Kaur A, Khan IA, Banipal PK, Banipal TS. Deciphering the complexation process of a fluoroquinolone antibiotic, levofloxacin, with bovine serum albumin in the presence of additives. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 191:259-270. [PMID: 29045929 DOI: 10.1016/j.saa.2017.10.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Revised: 10/04/2017] [Accepted: 10/08/2017] [Indexed: 06/07/2023]
Abstract
The current work aims to explore the thermodynamic and conformational aspects for the binding of fluoroquinolone antibacterial drug, levofloxacin (LFC), with bovine serum albumin (BSA) using calorimetric, spectroscopic (UV-visible, fluorescence, circular dichroism, and 1H NMR), dynamic light scattering (DLS) and computational methods (molecular docking). The binding of LFC with BSA at two sequential sites with higher affinity (~103M-1) at the first site has been explored by calorimetry whereas the binding at a single site with affinity of the order of ~104M-1 has been observed from fluorescence spectroscopy. The calorimetric study in the presence of additives along with docking analysis reveals the significant role of electrostatic, hydrogen bonding, and hydrophobic interactions in the association process. The slight conformational changes in protein as well as the changes in the water network structure around the binding cavity of protein have been observed from spectroscopic and DLS measurements. The LFC induced quenching of BSA fluorescence was observed to be initiated mainly through the static quenching process and this suggests the formation of ground state LFC-BSA association complex. The stronger interactions of LFC in the cavity of Sudlow site I (subdomain IIA) of protein have been explored from site marker calorimetric and molecular docking study.
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Affiliation(s)
- Amandeep Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Imran Ahmd Khan
- School of Pharmaceutical Science and Technology,Tianjin University, Tianjin 300072, PR China
| | | | - Tarlok Singh Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
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23
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Palmioli A, Panigati M, Bernardi A. Glycodendron–rhenium complexes as luminescent probes for lectin sensing. Org Biomol Chem 2018; 16:8413-8419. [DOI: 10.1039/c8ob01838c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Enhanced emission intensity of novel Re(i)-glycoprobes resulting from the specific recognition of carbohydrate-binding proteins as a potential tool in bioimaging applications.
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Affiliation(s)
| | - Monica Panigati
- Department of Chemistry
- University of Milano
- 20133 Milano
- Italy
| | - Anna Bernardi
- Department of Chemistry
- University of Milano
- 20133 Milano
- Italy
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24
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Nareddy PK, Swamy MJ. Differential scanning calorimetric and spectroscopic studies on the thermal and chemical unfolding of cucumber (Cucumis sativus) phloem exudate lectin. Int J Biol Macromol 2018; 106:95-100. [DOI: 10.1016/j.ijbiomac.2017.07.173] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 07/27/2017] [Accepted: 07/30/2017] [Indexed: 11/25/2022]
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25
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Sager CP, Fiege B, Zihlmann P, Vannam R, Rabbani S, Jakob RP, Preston RC, Zalewski A, Maier T, Peczuh MW, Ernst B. The price of flexibility - a case study on septanoses as pyranose mimetics. Chem Sci 2017; 9:646-654. [PMID: 29629131 PMCID: PMC5868388 DOI: 10.1039/c7sc04289b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 11/07/2017] [Indexed: 12/22/2022] Open
Abstract
Seven-membered ring mimetics of mannose were studied as ligands for the mannose-specific bacterial lectin FimH, which plays an essential role in the first step of urinary tract infections (UTI). A competitive binding assay and isothermal titration calorimetry (ITC) experiments indicated an approximately ten-fold lower affinity for the seven-membered ring mannose mimetic 2-O-n-heptyl-1,6-anhydro-d-glycero-d-galactitol (7) compared to n-heptyl α-d-mannopyranoside (2), resulting exclusively from a loss of conformational entropy. Investigations by solution NMR, X-ray crystallography, and molecular modeling revealed that 7 establishes a superimposable H-bond network compared to mannoside 2, but at the price of a high entropic penalty due to the loss of its pronounced conformational flexibility. These results underscore the importance of having access to the complete thermodynamic profile of a molecular interaction to "rescue" ligands from entropic penalties with an otherwise perfect fit to the protein binding site.
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Affiliation(s)
- Christoph P Sager
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Brigitte Fiege
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Pascal Zihlmann
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Raghu Vannam
- Department of Chemistry , University of Connecticut , 55 N. Eagleville Road U3060, Storrs , CT , 06279 USA .
| | - Said Rabbani
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Roman P Jakob
- University of Basel , Biozentrum: Focal Area Structural Biology , Klingelbergstrasse 70 , 4056 Basel , Switzerland
| | - Roland C Preston
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Adam Zalewski
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Timm Maier
- University of Basel , Biozentrum: Focal Area Structural Biology , Klingelbergstrasse 70 , 4056 Basel , Switzerland
| | - Mark W Peczuh
- Department of Chemistry , University of Connecticut , 55 N. Eagleville Road U3060, Storrs , CT , 06279 USA .
| | - Beat Ernst
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
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Norberg O, Wu B, Thota N, Ge JT, Fauquet G, Saur AK, Aastrup T, Dong H, Yan M, Ramström O. Synthesis and binding affinity analysis of α1-2- and α1-6- O / S -linked dimannosides for the elucidation of sulfur in glycosidic bonds using quartz crystal microbalance sensors. Carbohydr Res 2017; 452:35-42. [DOI: 10.1016/j.carres.2017.09.015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 09/26/2017] [Accepted: 09/30/2017] [Indexed: 01/05/2023]
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Coulibaly FS, Ezoulin MJM, Purohit SS, Ayon NJ, Oyler NA, Youan BBC. Layer-by-Layer Engineered Microbicide Drug Delivery System Targeting HIV-1 gp120: Physicochemical and Biological Properties. Mol Pharm 2017; 14:3512-3527. [PMID: 28830144 DOI: 10.1021/acs.molpharmaceut.7b00555] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The purpose of this study was to engineer a model anti-HIV microbicide (tenofovir) drug delivery system targeting HIV-1 envelope glycoprotein gp120 (HIV-1 g120) for the prevention of HIV sexual transmission. HIV-1 g120 and mannose responsive particles (MRP) were prepared through the layer-by-layer coating of calcium carbonate (CaCO3) with concanavalin A (Con A) and glycogen. MRP average particle size ranged from 881.7 ± 15.45 nm to 1130 ± 15.72 nm, depending on the number of Con A layers. Tenofovir encapsulation efficiency in CaCO3 was 74.4% with drug loading of 16.3% (w/w). MRP was non-cytotoxic to Lactobacillus crispatus, human vaginal keratinocytes (VK2), and murine macrophage RAW 264.7 cells and did not induce any significant proinflammatory nitric oxide release. Overall, compared to control, no statistically significant increase in proinflammatory cytokine IL-1α, IL-1β, IL-6, MKC, IL-7, and interferon-γ-inducible protein 10 (IP10) levels was observed. Drug release profiles in the presence of methyl α-d-mannopyranoside and recombinant HIV-1 envelope glycoprotein gp120 followed Hixson-Crowell and Hopfenberg kinetic models, indicative of a surface-eroding system. The one Con A layer containing system was found to be the most sensitive (∼2-fold increase in drug release vs control SFS:VFS) at the lowest HIV gp120 concentration tested (25 μg/mL). Percent mucoadhesion, tested ex vivo on porcine vaginal tissue, ranged from 10% to 21%, depending on the number of Con A layers in the formulation. Collectively, these data suggested that the proposed HIV-1 g120 targeting, using MRP, potentially represent a safe and effective template for vaginal microbicide drug delivery, if future preclinical studies are conclusive.
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Affiliation(s)
- Fohona S Coulibaly
- Laboratory of Future Nanomedicines and Theoretical Chronopharmaceutics, Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City , 2464 Charlotte, Kansas City, Missouri 64108, United States
| | - Miezan J M Ezoulin
- Laboratory of Future Nanomedicines and Theoretical Chronopharmaceutics, Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City , 2464 Charlotte, Kansas City, Missouri 64108, United States
| | - Sudhaunshu S Purohit
- Department of Chemistry, University of Missouri-Kansas City , 5100 Rockhill Road, Kansas City, Missouri 64110, United States
| | - Navid J Ayon
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City , 2464 Charlotte, Kansas City, Missouri 64108, United States
| | - Nathan A Oyler
- Department of Chemistry, University of Missouri-Kansas City , 5100 Rockhill Road, Kansas City, Missouri 64110, United States
| | - Bi-Botti C Youan
- Laboratory of Future Nanomedicines and Theoretical Chronopharmaceutics, Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City , 2464 Charlotte, Kansas City, Missouri 64108, United States
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Kutcherlapati SNR, Koyilapu R, Boddu UMR, Datta D, Perali RS, Swamy MJ, Jana T. Glycopolymer-Grafted Nanoparticles: Synthesis Using RAFT Polymerization and Binding Study with Lectin. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01265] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | | | | | - Debparna Datta
- School of Chemistry, University of Hyderabad, Hyderabad, India
| | | | - Musti J. Swamy
- School of Chemistry, University of Hyderabad, Hyderabad, India
| | - Tushar Jana
- School of Chemistry, University of Hyderabad, Hyderabad, India
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Bertleff-Zieschang N, Bechold J, Grimm C, Reutlinger M, Schneider P, Schneider G, Seibel J. Exploring the Structural Space of the Galectin-1-Ligand Interaction. Chembiochem 2017; 18:1477-1481. [DOI: 10.1002/cbic.201700251] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Indexed: 01/31/2023]
Affiliation(s)
- Nadja Bertleff-Zieschang
- Institute of Organic Chemistry; Julius Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Julian Bechold
- Institute of Organic Chemistry; Julius Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Clemens Grimm
- Biozentrum der Julius Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Michael Reutlinger
- Eidgenössische Technische Hochschule (ETH); Department Chemie und Angewandte Biowissenschaften; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Petra Schneider
- Eidgenössische Technische Hochschule (ETH); Department Chemie und Angewandte Biowissenschaften; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Gisbert Schneider
- Eidgenössische Technische Hochschule (ETH); Department Chemie und Angewandte Biowissenschaften; Vladimir-Prelog-Weg 4 8093 Zürich Switzerland
| | - Jürgen Seibel
- Institute of Organic Chemistry; Julius Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
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Carrillo C, Cordoba-Diaz D, Cordoba-Diaz M, Girbés T, Jiménez P. Effects of temperature, pH and sugar binding on the structures of lectins ebulin f and SELfd. Food Chem 2017; 220:324-330. [DOI: 10.1016/j.foodchem.2016.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 09/09/2016] [Accepted: 10/03/2016] [Indexed: 12/19/2022]
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Nayyar A, Walker G, Wardrop F, Adya AK. Flocculation in industrial strains ofSaccharomyces cerevisiae: role of cell wall polysaccharides and lectin-like receptors. JOURNAL OF THE INSTITUTE OF BREWING 2017. [DOI: 10.1002/jib.421] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ashima Nayyar
- School of Science, Engineering and Technology; Abertay University; Bell Street Dundee DD1 1HG UK
| | - Graeme Walker
- School of Science, Engineering and Technology; Abertay University; Bell Street Dundee DD1 1HG UK
| | | | - Ashok K. Adya
- School of Science, Engineering and Technology; Abertay University; Bell Street Dundee DD1 1HG UK
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32
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Banipal TS, Kaur A, Banipal PK. Physicochemical aspects of the energetics of binding of sulphanilic acid with bovine serum albumin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 170:214-225. [PMID: 27450119 DOI: 10.1016/j.saa.2016.07.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 06/10/2016] [Accepted: 07/10/2016] [Indexed: 06/06/2023]
Abstract
The thermodynamic study of the binding of sulphanilic acid with model transport protein bovine serum albumin is a promising approach in the area of synthesizing new sulfa drugs with improved therapeutic effect. Thus, such binding studies play an important role in the rational drug design process. The binding between sulphanilic acid and bovine serum albumin has been studied using calorimetry, light scattering in combination with spectroscopic and microscopic techniques. The calorimetric data reveals the presence of two sequential nature of binding sites where the first binding site has stronger affinity (~10(4)M(-1)) and second binding site has weaker affinity (~10(3)M(-1)). However, the spectroscopic (absorption and fluorescence) results suggest the presence of single low affinity binding site (~10(3)M(-1)) on protein. The contribution of polar and non-polar interactions to the binding process has been explored in the presence of various additives. It is found that sulphanilic acid binds with high affinity at Sudlow site II and with low affinity at Sudlow site I of protein. Light scattering and circular dichroism measurements have been used to study the effect on the molecular topology and conformation of protein, respectively. Thus these studies provide important insights into the binding of sulphanilic acid with bovine serum albumin both quantitatively and qualitatively.
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Affiliation(s)
- Tarlok S Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
| | - Amandeep Kaur
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Parampaul K Banipal
- Department of Chemistry, Guru Nanak Dev University, Amritsar 143005, Punjab, India
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Chebotareva NA, Roman SG, Kurganov BI. Dissociative mechanism for irreversible thermal denaturation of oligomeric proteins. Biophys Rev 2016; 8:397-407. [PMID: 28510015 PMCID: PMC5418479 DOI: 10.1007/s12551-016-0220-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 09/13/2016] [Indexed: 01/09/2023] Open
Abstract
Protein stability is a fundamental characteristic essential for understanding conformational transformations of the proteins in the cell. When using protein preparations in biotechnology and biomedicine, the problem of protein stability is of great importance. The kinetics of denaturation of oligomeric proteins may have characteristic properties determined by the quaternary structure. The kinetic schemes of denaturation can include the multiple stages of conformational transitions in the protein oligomer and stages of reversible dissociation of the oligomer. In this case, the shape of the kinetic curve of denaturation or the shape of the melting curve registered by differential scanning calorimetry can vary with varying the protein concentration. The experimental data illustrating dissociative mechanism for irreversible thermal denaturation of oligomeric proteins have been summarized in the present review. The use of test systems based on thermal aggregation of oligomeric proteins for screening of agents possessing anti-aggregation activity is discussed.
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Affiliation(s)
- Natalia A Chebotareva
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky pr. 33, Moscow, 119071, Russia.
| | - Svetlana G Roman
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky pr. 33, Moscow, 119071, Russia
| | - Boris I Kurganov
- Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky pr. 33, Moscow, 119071, Russia
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Kong N, Xie S, Zhou J, Menéndez M, Solís D, Park J, Proietti G, Ramström O, Yan M. Catalyst-Free Cycloaddition Reaction for the Synthesis of Glyconanoparticles. ACS APPLIED MATERIALS & INTERFACES 2016; 8:28136-28142. [PMID: 27649792 DOI: 10.1021/acsami.6b07471] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new conjugation method for the immobilization of carbohydrates on nanomaterials was demonstrated simply by mixing perfluorophenyl azide-functionalized silica nanoparticles (SNPs), an amine-derivatized carbohydrate, and phenylacetaldehyde under ambient conditions without any catalyst. The density of carbohydrates on the glyconanoparticles was determined using the quantitative 19F NMR (19F qNMR) technique; for example, the density of d-mannose (Man) on Man-SNPs was 2.5 ± 0.2 × 10-16 nmol/nm2. The glyconanoparticles retained their binding affinity and selectivity toward cognate lectins. The apparent dissociation constant of the glyconanoparticles was measured by a fluorescence competition assay, where the binding affinity of Man-SNPs was almost 4 orders of magnitude higher than that of Man with concanavalin A. Moreover, even with a ligand density of 2.6 times lower than Man-SNPs synthesized by the copper-catalyzed azide-alkyne cycloaddition, the binding affinity of Man-SNPs prepared by the current method was more than 4 times higher.
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Affiliation(s)
- Na Kong
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Sheng Xie
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Juan Zhou
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Margarita Menéndez
- Instituto de Química Física Rocasolano , Consejo Superior de Investigaciones Científicas, and Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), ISCIII, Madrid, Spain
| | - Dolores Solís
- Instituto de Química Física Rocasolano , Consejo Superior de Investigaciones Científicas, and Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (CIBERES), ISCIII, Madrid, Spain
| | - JaeHyeung Park
- Department of Chemistry, University of Massachusetts Lowell , 1 University Avenue, Lowell, Massachusetts 01854, United States
| | - Giampiero Proietti
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Olof Ramström
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
| | - Mingdi Yan
- Department of Chemistry, KTH-Royal Institute of Technology , Teknikringen 30, S-10044 Stockholm, Sweden
- Department of Chemistry, University of Massachusetts Lowell , 1 University Avenue, Lowell, Massachusetts 01854, United States
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35
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Kojori HS, Ji Y, Paik Y, Braunschweig AB, Kim SJ. Monitoring interfacial lectin binding with nanomolar sensitivity using a plasmon field effect transistor. NANOSCALE 2016; 8:17357-17364. [PMID: 27714196 DOI: 10.1039/c6nr05544c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
By immobilizing glycopolymers onto the surface of the recently developed plasmonic field effect transistor (FET), the recognition between lectins and surface-immobilized glycopolymers can be detected over a wide dynamic range (10-10 to 10-4 M) in an environment that resembles the glycocalyx. The binding to the sensor surface by various lectins was tested, and the selectivities and relative binding affinity trends observed in solution were maintained on the sensor surface, and the significantly higher avidities are attributed to cluster-glycoside effects that occur on the surface. The combination of polymer surface chemistry and optoelectronic output in this device architecture produces amongst the highest reported detection sensitivity for ConA. This work demonstrates the benefits that arise from combining emerging device architectures and soft-matter systems to create cutting edge nanotechnologies that lend themselves to fundamental biological studies and integration into point-of-use diagnostics and sensors.
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Affiliation(s)
- Hossein Shokri Kojori
- Department of Electrical and Computer Engineering, University of Miami, Miami, Florida 33124, USA.
| | - Yiwen Ji
- Department of Chemistry, University of Miami, Miami, Florida 33124, USA
| | - Younghun Paik
- Department of Electrical and Computer Engineering, University of Miami, Miami, Florida 33124, USA.
| | - Adam B Braunschweig
- Department of Chemistry, University of Miami, Miami, Florida 33124, USA and Advanced Science Research Center (ASRC), City University of New York, New York, New York 10031, USA. and Department of Chemistry and Biochemistry, City University of New York-Hunter College, 695 Park Avenue, New York, New York 10065, USA
| | - Sung Jin Kim
- Department of Electrical and Computer Engineering, University of Miami, Miami, Florida 33124, USA. and Biomedical Nanotechnology Institute at the University of Miami (BioNIUM), Miami, Florida 33124, USA
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36
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Ujma J, Giles K, Morris M, Barran PE. New High Resolution Ion Mobility Mass Spectrometer Capable of Measurements of Collision Cross Sections from 150 to 520 K. Anal Chem 2016; 88:9469-9478. [DOI: 10.1021/acs.analchem.6b01812] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Jakub Ujma
- Michael
Barber Centre for Collaborative Mass Spectrometry, Manchester Institute
for Biotechnology, University of Manchester, Manchester M1 7DN, U.K
| | | | | | - Perdita E. Barran
- Michael
Barber Centre for Collaborative Mass Spectrometry, Manchester Institute
for Biotechnology, University of Manchester, Manchester M1 7DN, U.K
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37
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Sato K. [Development of Functional Multilayer Nanofilms and Microcapsules Based on Layer-by-Layer Deposition Techniques]. YAKUGAKU ZASSHI 2016; 135:1029-35. [PMID: 26329548 DOI: 10.1248/yakushi.15-00182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Functional multilayer thin films have been prepared by layer-by-layer (LbL) deposition for the development of sensors, separators, and drug delivery systems. In particular, glucose-sensitive LbL films have been widely studied for use as glucose sensors and in glucose-triggered drug delivery systems. In this work, I report on glucose-sensitive LbL films that consist of concanavalin A (ConA), phenylboronic acid (PBA), and glucose oxidase (GOx). ConA/glycogen LbL films were prepared by LbL deposition of ConA and glycogen through a lectin-sugar interaction. Similarly, PBA-modified poly(amidoamine) dendrimer/poly(vinyl alcohol) (PVA) LbL films were prepared through cyclic boronate ester bonds. Both types of films decomposed in the presence of glucose, by the competitive binding of glucose, although these LbL films did not show a satisfactory response to millimolar concentrations of glucose under physiological conditions. PBA-modified poly(allylamine hydrochloride) and PVA films were prepared on a GOx-modified quartz slide. The LbL film was stable over a wide pH range, from 3.0 to 9.0, in the absence of glucose. In contrast, the film decomposed upon exposure to 0.1-10 mM glucose solutions for 60 min at pH 7.4. The glucose-induced decomposition of the film can be explained by the scission of the carbon-boron bond of the PBA residues by hydrogen peroxide, which was produced through the GOx-catalyzed oxidation of glucose. These results suggest this multilayer film may be useful for the development of glucose-sensitive drug delivery systems.
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Affiliation(s)
- Katsuhiko Sato
- Graduate School of Pharmaceutical Sciences, Tohoku Unicersity
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38
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Leenders CMA, Jansen G, Frissen MMM, Lafleur RPM, Voets IK, Palmans ARA, Meijer EW. Monosaccharides as Versatile Units for Water-Soluble Supramolecular Polymers. Chemistry 2016; 22:4608-15. [DOI: 10.1002/chem.201504762] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Christianus M. A. Leenders
- Institute for Complex Molecular Systems; Eindhoven University of Technology, P.O. Box 513; 5600 MB Eindhoven The Netherlands
| | - Gijs Jansen
- Institute for Complex Molecular Systems; Eindhoven University of Technology, P.O. Box 513; 5600 MB Eindhoven The Netherlands
| | - Martijn M. M. Frissen
- Institute for Complex Molecular Systems; Eindhoven University of Technology, P.O. Box 513; 5600 MB Eindhoven The Netherlands
| | - René P. M. Lafleur
- Institute for Complex Molecular Systems; Eindhoven University of Technology, P.O. Box 513; 5600 MB Eindhoven The Netherlands
| | - Ilja K. Voets
- Institute for Complex Molecular Systems; Eindhoven University of Technology, P.O. Box 513; 5600 MB Eindhoven The Netherlands
| | - Anja R. A. Palmans
- Institute for Complex Molecular Systems; Eindhoven University of Technology, P.O. Box 513; 5600 MB Eindhoven The Netherlands
| | - E. W. Meijer
- Institute for Complex Molecular Systems; Eindhoven University of Technology, P.O. Box 513; 5600 MB Eindhoven The Netherlands
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Sundhoro M, Wang H, Boiko ST, Chen X, Jayawardena HSN, Park J, Yan M. Fabrication of carbohydrate microarrays on a poly(2-hydroxyethyl methacrylate)-based photoactive substrate. Org Biomol Chem 2016; 14:1124-30. [DOI: 10.1039/c5ob01417d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A carbohydrate microarray was fabricated on a PHEMA-based photoactive polymer. The arrays showed strong signals, and were used to probe carbohydrate-mediated interactions with lectin and bacteria.
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Affiliation(s)
| | - Hui Wang
- Department of Chemistry
- University of Massachusetts Lowell
- Lowell
- USA
| | - Scott T. Boiko
- Department of Biology
- University of Massachusetts Lowell
- Lowell
- USA
| | - Xuan Chen
- Department of Chemistry
- University of Massachusetts Lowell
- Lowell
- USA
| | | | - JaeHyeung Park
- Department of Chemistry
- University of Massachusetts Lowell
- Lowell
- USA
| | - Mingdi Yan
- Department of Chemistry
- University of Massachusetts Lowell
- Lowell
- USA
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40
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Banipal TS, Kaur A, Khan IA, Banipal PK. Exploring the thermodynamics and conformational aspects of nicotinic acid binding with bovine serum albumin: a detailed calorimetric, spectroscopic and molecular docking study. RSC Adv 2016. [DOI: 10.1039/c5ra28028a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
An attempt to obtain a physicochemical and conformational outlook on the binding interaction of vitamin B3 (NA) with a model transport protein BSA using calorimetry, light scattering, molecular docking, and spectroscopic techniques.
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Affiliation(s)
| | - Amandeep Kaur
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar – 143005
- India
| | - Imran Ahmd Khan
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar – 143005
- India
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41
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Loka RS, McConnell MS, Nguyen HM. Studies of Highly-Ordered Heterodiantennary Mannose/Glucose-Functionalized Polymers and Concanavalin A Protein Interactions Using Isothermal Titration Calorimetry. Biomacromolecules 2015; 16:4013-4021. [PMID: 26580410 DOI: 10.1021/acs.biomac.5b01380] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Preparations of the highly ordered monoantennary, homofunctional diantennary, and heterofunctional diantennary neoglycopolymers of α-d-mannose and β-d-glucose residues were achieved via ring-opening metathesis polymerization. Isothermal titration calorimetry measurements of these synthetic neoglycopolymers with Concanavalin A (Con A), revealed that heterofunctional diantennary architectures bearing both α-mannose and nonbinding β-glucose units, poly(Man-Glc), binds to Con A (Ka = 16.1 × 10(6) M(-1)) comparably to homofunctional diantennary neoglycopolymer (Ka = 30 × 10(6) M(-1)) bearing only α-mannose unit, poly(Man-Man). In addition, poly(Man-Glc) neoglycopolymer shows a nearly 5-fold increasing in binding affinity compared to monoantennary neoglycopolymer, poly(Man). Although the exact mechanism for the high binding affinity of poly(Man-Glc) to Con A is unclear, we hypothesize that the α-mannose bound to Con A might facilitate interaction of β-glucose with the extended binding site of Con A due to the close proximity of β-glucose to α-mannose residues in the designed polymerizable scaffold.
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Affiliation(s)
- Ravi S Loka
- Department of Chemistry, University of Iowa, Iowa 52242, United States
| | | | - Hien M Nguyen
- Department of Chemistry, University of Iowa, Iowa 52242, United States
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42
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Ribeiro JP, Diercks T, Jiménez-Barbero J, André S, Gabius HJ, Cañada FJ. Fluorinated Carbohydrates as Lectin Ligands: (19)F-Based Direct STD Monitoring for Detection of Anomeric Selectivity. Biomolecules 2015; 5:3177-92. [PMID: 26580665 PMCID: PMC4693274 DOI: 10.3390/biom5043177] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 11/02/2015] [Accepted: 11/04/2015] [Indexed: 12/29/2022] Open
Abstract
The characterization of the binding of reducing carbohydrates present as mixtures of anomers in solution to a sugar recepor (lectin) poses severe difficulties. In this situation, NMR spectroscopy enables the observation of signals for each anomer in the mixture by applying approaches based on ligand observation. Saturation transfer difference (STD) NMR allows fast and efficient screening of compound mixtures for reactivity to a receptor. Owing to the exceptionally favorable properties of 19F in NMR spectroscopy and the often complex 1H spectra of carbohydrates, 19F-containing sugars have the potential to be turned into versatile sensors for recognition. Extending the recently established 1H → 1H STDre19F-NMR technique, we here demonstrate its applicability to measure anomeric selectivity of binding in a model system using the plant lectin concanavalin A (ConA) and 2-deoxy-2-fluoro-d-mannose. Indeed, it is also possible to account for the mutual inhibition between the anomers on binding to the lectin by means of a kinetic model. The monitoring of 19F-NMR signal perturbation disclosed the relative activities of the anomers in solution and thus enabled the calculation of their binding affinity towards ConA. The obtained data show a preference for the α anomer that increases with temperature. This experimental approach can be extended to others systems of biomedical interest by testing human lectins with suitably tailored glycan derivatives.
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Affiliation(s)
- João P Ribeiro
- Centre de Recherches sur les Macromolécules Végétales, UPR5301, CNRS-Université Grenoble Alpes, BP53, 38041 Grenoble cédex 09, France.
| | - Tammo Diercks
- CIC bioGUNE, Bizkaia Technological Park, Building 800, 48160 Derio, Spain.
| | - Jesús Jiménez-Barbero
- CIC bioGUNE, Bizkaia Technological Park, Building 800, 48160 Derio, Spain.
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain.
| | - Sabine André
- Institut für Physiologische Chemie, Tierärztliche Fakultät der Ludwig-Maximilians-Universität, Veterinärstr. 13, 80539 München, Germany.
| | - Hans-Joachim Gabius
- Institut für Physiologische Chemie, Tierärztliche Fakultät der Ludwig-Maximilians-Universität, Veterinärstr. 13, 80539 München, Germany.
| | - Francisco Javier Cañada
- Chemical and Physical Biology, Centro de Investigaciones Biológicas, CIB-CSIC, Ramiro de Maeztu 9, 28040 Madrid, Spain.
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Modulation of Multivalent Protein Binding on Surfaces by Glycopolymer Brush Chemistry. Methods Mol Biol 2015; 1367:183-93. [PMID: 26537474 DOI: 10.1007/978-1-4939-3130-9_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The presentation of carbohydrates on an array can provide a means to model (mimic) oligosaccharides found on cell surfaces. Tuning the structural features of such carbohydrate arrays can therefore be used to help to elucidate the molecular mechanisms of protein-carbohydrate recognition on cell surfaces. Here we present a strategy to directly correlate the molecular and structural features of ligands presented on a surface with the kinetics and affinity of carbohydrate-lectin binding. The Surface Plasmon Resonance (SPR) spectroscopy analysis identified that by varying the spatial distribution (3D organization) of carbohydrate ligands within the surface grafted polymer layer, the mode of binding changed from multivalent to monovalent: a near 1000-fold change in the equilibrium association constant was achieved. The rupture forces measured by atomic force microscopy (AFM) force spectroscopy also indicated that the mode of binding between lectin and carbohydrate ligands can be modulated by the organization of carbohydrate ligands within the glycopolymer brushes.
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Arai S, Okochi M, Shimizu K, Hanai T, Honda H. A single cell culture system using lectin‐conjugated magnetite nanoparticles and magnetic force to screen mutant cyanobacteria. Biotechnol Bioeng 2015; 113:112-9. [DOI: 10.1002/bit.25707] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 07/01/2015] [Accepted: 07/07/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Sayuri Arai
- Department of BiotechnologyGraduate School of EngineeringNagoya University, Furo‐cho, Chikusa‐kuNagoyaAichi464‐8603Japan
| | - Mina Okochi
- Department of Chemical EngineeringGraduate School of Science and EngineeringTokyo Institute of TechnologyMeguro‐kuTokyo152‐8552Japan
| | - Kazunori Shimizu
- Department of BiotechnologyGraduate School of EngineeringNagoya University, Furo‐cho, Chikusa‐kuNagoyaAichi464‐8603Japan
| | - Taizo Hanai
- Laboratory for BioinformaticsGraduate School of Systems Life SciencesKyushu UniversityFukuoka812‐8582Japan
| | - Hiroyuki Honda
- Department of BiotechnologyGraduate School of EngineeringNagoya University, Furo‐cho, Chikusa‐kuNagoyaAichi464‐8603Japan
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Kong N, Zhou J, Park J, Xie S, Ramström O, Yan M. Quantitative Fluorine NMR To Determine Carbohydrate Density on Glyconanomaterials Synthesized from Perfluorophenyl Azide-Functionalized Silica Nanoparticles by Click Reaction. Anal Chem 2015; 87:9451-8. [DOI: 10.1021/acs.analchem.5b02507] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Na Kong
- Department
of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Juan Zhou
- Department
of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - JaeHyeung Park
- Department
of Chemistry, University of Massachusetts Lowell, 1 University
Ave., Lowell, Massachusetts 01854, United States
| | - Sheng Xie
- Department
of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Olof Ramström
- Department
of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
| | - Mingdi Yan
- Department
of Chemistry, KTH - Royal Institute of Technology, Teknikringen 30, S-10044 Stockholm, Sweden
- Department
of Chemistry, University of Massachusetts Lowell, 1 University
Ave., Lowell, Massachusetts 01854, United States
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Abstract
Lectin microarrays are rows of lectins with different carbohydrate-binding specificities spotted on surfaces of glass slides. Lectin microarray technique enables glycomic analyses of carbohydrate composition of fungal cell walls. We will describe an application of the technique in analyzing cell surface glycome of yeast-form fungal cells in the living state. The analysis reveals genus- and species-dependent complex cell surface carbohydrate structures of fungi, and enabled us, therefore, to suggest that cell walls of yeast cells, which have been considered to have relatively simple structures, actually have a more complex structure containing galactose and fucose. This shows that the technique can be used to find new insights into the study of phylogenetic relations and into the classification of cells in the fungal kingdom based on cell wall glycome.
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Barboiu M, Mouline Z, Silion M, Licsandru E, Simionescu BC, Mahon E, Pinteala M. Multivalent recognition of concanavalin A by {Mo₁₃₂ } glyconanocapsules--toward biomimetic hybrid multilayers. Chemistry 2014; 20:6678-83. [PMID: 24756773 DOI: 10.1002/chem.201402187] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Indexed: 11/07/2022]
Abstract
Herein, we consider Müller's spherical, porous, anionic, molybdenum oxide based capsule, (NH4)42[{(Mo(VI))Mo(VI)5O21(H2O)6}12{Mo(V)2O4(CH3COO)}30]⋅10 CH3COONH4⋅300 H2O≡(NH4)42⋅1 a⋅crystal ingredients≡1, {Mo132}, as an effective sugar-decorated nanoplatform for multivalent lectin recognition. The ion-exchange of NH4(+) ions of 1 with cationic-sugars, D-mannose-ammonium chloride (2) or D-glucose-ammonium chloride (3) results in the formation of glyconanocapsules (NH4)(42-n)2n⋅1 a and (NH4)(42-m)3m⋅1 a. The Mannose (NH4)(42-n)2n⋅1 a capsules bind selectively Concanavalin A (Con A) in aqueous solution, giving an association avidity constant of K(a)(multi)=4.6×10(4) M(-1) and an enhancement factor of β=K(a)(multi)/K(ass)(mono)=21.9, reminiscent of the formation of "glycoside clusters" on the external surface of glyconanocapsule. The glyconanocapsules (NH4)(42-n)2n⋅1 a and (NH4)(42-m)3m⋅1 a self-assemble in "hybrid multilayers" by successive layer-by-layer deposition of (NH4)(42-n)2n⋅1 a or (NH4)(42-m)3m⋅1 a and Con A. These architectures, reminiscent of versatile mimics of artificial tissues, can be easily prepared and quantified by using quartz crystal microgravimetry (QCM). The "biomimetic hybrid multilayers" described here are stable under a continual water flow and they may serve as artificial networks for a greater depth of understanding of various biological mechanisms, which can directly benefit the fields of chemical separations, sensors or storage-delivery devices.
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Affiliation(s)
- Mihail Barboiu
- Adaptive Supramolecular Nanosystems Group, Institut Européen des Membranes, ENSCM-UMII-CNRS UMR-5635, Place Eugène Bataillon, CC 047, F-34095, Montpellier (France), Fax: : (+33) 467149119.
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Kobayashi Y, Tateno H, Ogawa H, Yamamoto K, Hirabayashi J. Comprehensive list of lectins: origins, natures, and carbohydrate specificities. Methods Mol Biol 2014; 1200:555-577. [PMID: 25117264 DOI: 10.1007/978-1-4939-1292-6_45] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
More than 100 years have passed since the first lectin ricin was discovered. Since then, a wide variety of lectins (lect means "select" in Latin) have been isolated from plants, animals, fungi, bacteria, as well as viruses, and their structures and properties have been characterized. At present, as many as 48 protein scaffolds have been identified as functional lectins from the viewpoint of three-dimensional structures as described in this chapter. In this chapter, representative 53 lectins are selected, and their major properties that include hemagglutinating activity, mitogen activity, blood group specificity, molecular weight, metal requirement, and sugar specificities are summarized as a comprehensive table. The list will provide a practically useful, comprehensive list for not only experienced lectin users but also many other non-expert researchers, who are not familiar to lectins and, therefore, have no access to advanced lectin biotechnologies described in other chapters.
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Affiliation(s)
- Yuka Kobayashi
- J-Oil Mills, Inc., 11, Kagetoricho, Totsuka-ku, Yokohama, Kanagawa, 245-0064, Japan,
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Mouline Z, Mahon E, Gomez E, Barragan-Montero V, Montero JL, Barboiu M. Entropy-driven lectin-recognition of multivalent glycovesicles. Chem Commun (Camb) 2014; 50:731-3. [DOI: 10.1039/c3cc47941b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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50
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Olkhov RV, Weissenborn MJ, Flitsch SL, Shaw AM. Glycosylation characterization of human and porcine fibrinogen proteins by lectin-binding biophotonic microarray imaging. Anal Chem 2013; 86:621-8. [PMID: 24328092 DOI: 10.1021/ac402872t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Lectin binding has been studied using the particle plasmon light-scattering properties of gold nanoparticles printed into an array format. Performance of the kinetic assay is evaluated from a detailed analysis of the binding of concanavalin A (ConA) and wheat germ agglutinin (WGA) to their target monosaccharides indicating affinity constants in the order of KD ∼10 nM for the lectin-monosaccharide interaction. The detection limits for the lectins following a 200 s injection time were determined as 10 ng/mL or 0.23 nM and 100 ng/mL or 0.93 nM, respectively. Subsequently, a nine-lectin screen was performed on the porcine and human fibrinogen glycoproteins. The observed spectra of lectin-protein specific binding rates result in characteristic patterns that evidently correlate with the structure of the glycans and allow one to distinguish between glycosylation of the porcine and human fibrinogens. The array technology has the potential to perform a multilectin screen of large numbers of proteins providing information on protein glycosylation and their microheterogeneity.
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Affiliation(s)
- Rouslan V Olkhov
- College of Life and Environmental Sciences, University of Exeter , Exeter, Devon EX4 4QD, United Kingdom
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