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Wu AM, Singh T, Chen YL, Anderson KM, Li SC, Li YT. Glycan binding profile of a fucolectin-related protein (FRP) encoded by the SP2159 gene of Streptococcus pneumoniae. BIOCHIMIE OPEN 2017; 6:17-23. [PMID: 29892558 PMCID: PMC5991896 DOI: 10.1016/j.biopen.2017.12.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Accepted: 12/17/2017] [Indexed: 10/27/2022]
Abstract
The recombinant fucolectin-related protein (FRP) of unknown function, encoded by the SP2159 gene of Streptococcus pneumoniae, was expressed in E. coli. In this study, its glycan-recognition epitopes and their binding potencies were examined by enzyme-linked lectinosorbent and inhibition assays. The results indicate that FRP reacted strongly with human blood group ABH and l-Fucα1→2-active glycotopes and in their polyvalent (super) forms. When expressed by mass relative potency, the binding affinities of FRP to poly-l-Fucα1→glycotopes were about 5.0 × 105 folds higher than that of the mono-l-Fucα1→glycotope form. This unique binding property of FRP can be used as a special tool to differentiate complex forms of l-Fucα1→2 and other forms of glycotopes.
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Affiliation(s)
- Albert M Wu
- Glyco-Immunochemistry Research Laboratory, Institute of Biomedical Sciences, College of Medicine, Chang-Gung University, Kwei-san, Tao-yuan, 333, Taiwan
| | - Tanuja Singh
- Glyco-Immunochemistry Research Laboratory, Institute of Biomedical Sciences, College of Medicine, Chang-Gung University, Kwei-san, Tao-yuan, 333, Taiwan
| | - Yung Liang Chen
- Graduate Institute of Medical Laboratory Science and Biotechnology, Yuanpei University of Medical Technology, Hsinchu City 300, Taiwan
| | - Kimberly M Anderson
- Department of Biochemistry and Molecular Biology, Tulane University, School of Medicine, 1430 Tulane Ave., New Orleans, LA 70112, USA
| | - Su Chen Li
- Department of Biochemistry and Molecular Biology, Tulane University, School of Medicine, 1430 Tulane Ave., New Orleans, LA 70112, USA
| | - Yu Teh Li
- Department of Biochemistry and Molecular Biology, Tulane University, School of Medicine, 1430 Tulane Ave., New Orleans, LA 70112, USA
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Wu AM, Liu JH, Singh T, Yang Z. Recognition roles of mammalian structural units and polyvalency in lectin--glycan interactions. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2011; 705:99-116. [PMID: 21618106 DOI: 10.1007/978-1-4419-7877-6_6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Albert M Wu
- Glyco-Immunochemistry Research Laboratory, Institute of Molecular and Cellular Biology, College of Medicine, Chang Gung University, Kwei-san, Tao-yuan 333, Taiwan.
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Takahashi-Nakaguchi A, Hiraoka T, Iwabuchi K. The carbohydrate ligands on the host embryo mediate intercellular migration of the parasitic wasp embryo. FEBS Lett 2011; 585:2295-9. [PMID: 21664906 DOI: 10.1016/j.febslet.2011.05.055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2011] [Revised: 05/23/2011] [Accepted: 05/25/2011] [Indexed: 02/06/2023]
Abstract
Invasive stage embryos of the parasitic wasp Copidosoma floridanum transmigrate through the epithelium of phylogenetically distant host embryos in a manner that is similar to mammalian leukocyte infiltration. Host embryonic cells appear to recognize the invading wasp embryo by components on the cell surface. We developed an in vitro wasp entry inhibition assay and found that C-type lectins of the wasp embryo bound to N-linked carbohydrate chains with fucose residues on the surface of host embryo. This is the first report showing a receptor-ligand interaction between heterologous multicellular organisms.
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Yen MH, Wu AM, Yang Z, Gong YP, Chang ET. Recognition roles of the carbohydrate glycotopes of human and bovine lactoferrins in lectin-N-glycan interactions. Biochim Biophys Acta Gen Subj 2010; 1810:139-49. [PMID: 21055448 DOI: 10.1016/j.bbagen.2010.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Revised: 10/10/2010] [Accepted: 10/15/2010] [Indexed: 11/25/2022]
Abstract
BACKGROUND Lactoferrin is an iron-binding protein belonging to the transferrin family. In addition to iron homeostasis, lactoferrin is also thought to have anti-microbial, anti-inflammatory, and anticancer activities. Previous studies showed that all lactoferrins are glycosylated in the human body, but the recognition roles of their carbohydrate glycotopes have not been well addressed. METHODS The roles of human and bovine lactoferrins involved in lectin-N-glycan recognition processes were analyzed by enzyme-linked lectinosorbent assay with a panel of applied and microbial lectins. RESULTS AND CONCLUSIONS Both native and asialo human/bovine lactoferrins reacted strongly with four Man-specific lectins - Concanavalia ensiformis agglutinin, Morniga M, Pisum sativum agglutinin, and Lens culinaris lectin. They also reacted well with PA-IIL, a LFuc>Man-specific lectin isolated from Pseudomonas aeruginosa. Both human and bovine lactoferrins also recognized a sialic acid specific lectin-Sambucus nigra agglutinin, but not their asialo products. Both native and asialo bovine lactoferrins, but not the human ones, exhibited strong binding with a GalNAc>Gal-specific lectin-Wisteria floribunda agglutinin. Human native lactoferrins and its asialo products bound well with four Gal>GalNAc-specific type-2 ribosome inactivating protein family lectins-ricin, abrin-a, Ricinus communis agglutinin 1, and Abrus precatorius agglutinin (APA), while the bovine ones reacted only with APA. GENERAL SIGNIFICANCE This study provides essential knowledge regarding the different roles of bioactive sites of lactoferrins in lectin-N-glycan recognition processes.
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Affiliation(s)
- Meng-Hsiu Yen
- Glyco-Immunochemistry Research Labortory, Institute of Molecular and Cellular Biology, College of Medicine, Chang Gung University, Tao-yuan, Taiwan
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Gao J, Liu D, Wang Z. Screening lectin-binding specificity of bacterium by lectin microarray with gold nanoparticle probes. Anal Chem 2010; 82:9240-7. [PMID: 20973590 DOI: 10.1021/ac1022309] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
To develop a novel high-throughput tool for monitoring specific affinity of microbes with lectins, a kind of lectin microarray has been fabricated by immobilizing lectins on epoxide-derivatized glass slides and used to capture microbes. The capturing events are marked by attachment of lectin-conjugated gold nanoparticles followed by silver deposition to enhance the resonance light scattering (RLS) of the particles. The interactions of 16 lectins with four bacteria and one fungus were profiled by this approach. We demonstrated that the gold-nanoparticle-labeled array was suitable for identifying the binding affinity of lectin with bacterium, as well as determining the bacterium with high sensitivity. More importantly, we found that the growth of microbial strains in different culture media resulted in significant changes in their binding affinities with lectins, which might be important to the pathogenesis of the organisms.
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Affiliation(s)
- Jingqing Gao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China, 130022
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Valbuena G, Madrid JF, Hernández F, Sáez FJ. Identification of fucosylated glycoconjugates in Xenopus laevis testis by lectin histochemistry. Histochem Cell Biol 2010; 134:215-25. [DOI: 10.1007/s00418-010-0722-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/24/2010] [Indexed: 11/30/2022]
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Bianchet MA, Odom EW, Vasta GR, Amzel LM. Structure and specificity of a binary tandem domain F-lectin from striped bass (Morone saxatilis). J Mol Biol 2010; 401:239-52. [PMID: 20561530 DOI: 10.1016/j.jmb.2010.06.018] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 06/08/2010] [Accepted: 06/09/2010] [Indexed: 01/12/2023]
Abstract
The plasma of the striped bass Morone saxatilis contains a fucose-specific lectin (MsaFBP32) that consists of two F-type carbohydrate recognition domains (CRDs) in tandem. The crystal structure of the complex of MsaFBP32 with l-fucose reported here shows a cylindrical 81-A-long and 60-A-wide trimer divided into two globular halves: one containing N-terminal CRDs (N-CRDs) and the other containing C-terminal CRDs (C-CRDs). The resulting binding surfaces at the opposite ends of the cylindrical trimer have the potential to cross-link cell surface or humoral carbohydrate ligands. The N-CRDs and C-CRDs of MsaFBP32 exhibit significant structural differences, suggesting that they recognize different glycans. Analysis of the carbohydrate binding sites provides the structural basis for the observed specificity of MsaFBP32 for simple carbohydrates and suggests that the N-CRD recognizes more complex fucosylated oligosaccharides and with a relatively higher avidity than the C-CRD. Modeling of MsaFBP32 complexed with fucosylated glycans that are widely distributed in prokaryotes and eukaryotes rationalizes the observation that binary tandem CRD F-type lectins function as opsonins by cross-linking "non-self" carbohydrate ligands and "self" carbohydrate ligands, such as sugar structures displayed by microbial pathogens and glycans on the surface of phagocytic cells from the host.
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Affiliation(s)
- Mario A Bianchet
- Department of Biophysics and Biophysical Chemistry, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.
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Wu AM, Lisowska E, Duk M, Yang Z. Lectins as tools in glycoconjugate research. Glycoconj J 2010; 26:899-913. [PMID: 18368479 DOI: 10.1007/s10719-008-9119-7] [Citation(s) in RCA: 99] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 02/17/2008] [Accepted: 02/20/2008] [Indexed: 11/26/2022]
Abstract
Lectins are ubiquitous proteins of nonimmune origin, present in plants, microorganisms, animals and humans which specifically bind defined monosugars or oligosaccharide structures. Great progress has been made in recent years in understanding crucial roles played by lectins in many biological processes. Elucidation of carbohydrate specificity of human and animal lectins is of great importance for better understanding of these processes. Long before the role of carbohydrate-protein interactions had been explored, many lectins, mostly of plant origin, were identified, characterized and applied as useful tools in studying glycoconjugates. This review focuses on the specificity-based lectin classification and the methods of measuring lectin-carbohydrate interactions, which are used for determination of lectin specificity or for identification and characterization of glycoconjugates with lectins of known specificity. The most frequently used quantitative methods are shortly reviewed and the methods elaborated and used in our laboratories, based on biotinylated lectins, are described. These include the microtiter plate enzyme-linked lectinosorbent assay, lectinoblotting and lectin-glycosphingolipid interaction on thin-layer plates. Some chemical modifications of lectin ligands on the microtiter plates and blots (desialylation, Smith degradation, beta-elimination), which extend the applicability of these methods, are also described.
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Affiliation(s)
- Albert M Wu
- Glyco-Immunochemistry Research Laboratory, Institute of Molecular and Cellular Biology, Chang-Gung University, Kwei-san, Taoyuan 333, Taiwan.
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Isolation and characterization of a novel fucose-binding lectin from the gill of bighead carp (Aristichthys nobilis). Vet Immunol Immunopathol 2010; 133:154-64. [DOI: 10.1016/j.vetimm.2009.07.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2009] [Revised: 07/19/2009] [Accepted: 07/27/2009] [Indexed: 11/23/2022]
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Argayosa AM, Lee YC. Identification of (L)-fucose-binding proteins from the Nile tilapia (Oreochromis niloticus L.) serum. FISH & SHELLFISH IMMUNOLOGY 2009; 27:478-485. [PMID: 19563899 DOI: 10.1016/j.fsi.2009.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2008] [Revised: 06/20/2009] [Accepted: 06/21/2009] [Indexed: 05/28/2023]
Abstract
Lectins are carbohydrate-binding proteins with many biological functions including cellular recognition and innate immunity. In this study, a major l-fucose-binding lectin from the serum of Nile tilapia (Oreochromis niloticus L.), designated as TFBP, was isolated by l-fucose-BSA Sepharose CL6B affinity chromatography. The SDS-PAGE (10%) analysis of TFBP revealed a major band of approximately 23 kDa with an N-terminal amino acid sequence of DQTETAGQQSXPQDIHAVLREL which did not give significant similarities to the protein databases using BLASTp searches. Ruthenium red staining indicate positive calcium-binding property of TFBP. The purified TFBP agglutinated human type O erythrocytes but not the type A and B fresh erythrocytes. Live Aeromonas hydrophila and Enterococcus faecalis cells were also agglutinated by the lectin. The fucose-binding proteins were detected in the soluble protein extracts from the gills, gut, head kidneys, liver, serum and spleen using a fucose-binding protein probe (l-fucose-BSA-horseradish peroxidase). The binding of TFBP with the l-fucose-BSA probe was inhibited by l-fucose but not by alpha-methyl-d-mannose.
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Affiliation(s)
- Anacleto M Argayosa
- Y.C. Lee Laboratory, Department of Biology, Johns Hopkins University, MD, USA.
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Wu AM, Wu JH, Singh T, Singha B, Sudakevitz D, Gilboa-Garber N. Multivalent human blood group ABH and Lewis glycotopes are key recognition factors for a lFuc>Man binding lectin from phytopathogenic Ralstonia solanacearum. Biochim Biophys Acta Gen Subj 2009; 1790:249-59. [DOI: 10.1016/j.bbagen.2009.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Revised: 01/24/2009] [Accepted: 02/09/2009] [Indexed: 11/28/2022]
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Singha B, Adhya M, Chatterjee BP. Catfish (Clarias batrachus) serum lectin recognizes polyvalent Tn [α-d-GalpNAc1-Ser/Thr], Tα [β-d-Galp-(1→3)-α-d-GalpNAc1-Ser/Thr], and II [β-d-Galp(1→4)-β-d-GlcpNAc1-] mammalian glycotopes. Carbohydr Res 2008; 343:2384-92. [DOI: 10.1016/j.carres.2008.06.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2007] [Revised: 06/26/2008] [Accepted: 06/28/2008] [Indexed: 11/17/2022]
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Wu JH, Wu AM, Tsai CG, Chang XY, Tsai SF, Wu TS. Contribution of fucose-containing capsules in Klebsiella pneumoniae to bacterial virulence in mice. Exp Biol Med (Maywood) 2008; 233:64-70. [PMID: 18156307 DOI: 10.3181/0706-rm-170] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Bacterium Klebsiella pneumoniae (KP) contains a prominent capsule. Clinical infections usually are associated with pneumonia or urinary tract infection (UTI). Emerging evidence implicates KP in severe liver abscess especially in diabetic patients. The goal of this study was to investigate the capsular polysaccharides from KP of liver abscess (hepatic-KP) and of UTI-KP. The composition of capsular polysaccharides was analyzed by capillary high-performance liquid chromatography (HPLC, Dionex system). The terminal sugars were assayed by binding ability to lectins. The results showed that the capsule of a hepatic KP (KpL1) from a diabetic patient contained fucose, while the capsule from UTI-KP (KpU1) did not. The absence of fucose was verified by the absence of detectable polymerase chain reaction (PCR) fragment for fucose synthesis genes, gmd and wcaG in KpU1. Mice infected with the KpL1 showed high fatality, whereas those infected with the KpU1 showed high survival rate. The KpL1 capsule was reactive to lectins AAA and AAL, which detect fucose, while the KpU1 capsule was reactive to lectin GNA, which detects mannose. Phagocytosis experiment in mouse peritoneal cavity indicated that the peritoneal macrophages could interact with KpU1, while rare association of KpL1 with macrophages was observed. This study revealed that different polysaccharides were displayed on the bacterial capsules of virulent KpL1 as compared with the less virulent KpU1. Interaction of KpU1 with mice peritoneal macrophages was more prominent than that of KpL1. The possession of fucose might contribute to KpL1 virulence by avoiding phagocytosis since fucose on bacteria had been implicated in immune evasion.
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Affiliation(s)
- June Hsieh Wu
- Department of Microbiology and Immunology, College of Medicine, Chang Gung University, Tao Yuan 333, Taiwan.
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Jiang X, Ye M, Zou H. Technologies and methods for sample pretreatment in efficient proteome and peptidome analysis. Proteomics 2008; 8:686-705. [DOI: 10.1002/pmic.200700617] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Wu AM, Wu JH, Singh T, Lai LJ, Yang Z, Herp A. Recognition factors of Ricinus communis agglutinin 1 (RCA1). Mol Immunol 2006; 43:1700-15. [PMID: 16288808 DOI: 10.1016/j.molimm.2005.09.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2005] [Accepted: 09/24/2005] [Indexed: 11/25/2022]
Abstract
Ricinus communis agglutinin (RCA1) is one of the most important applied lectins that has been widely used as a tool to study cell surfaces and to purify glycans. Although the carbohydrate specificity of RCA1 has been described, the information obtained was mainly focused on inhibition of simple Galbeta1-related oligosaccharides and simple clusters. Here, all possible recognition factors of RCA1 of glycan binding were examined by enzyme-linked lectinosorbent (ELLSA) and inhibition assays, using known mammalian Gal/GalNAc carbohydrate structural units and natural polyvalent glycans. Among the glycoproteins (gps) tested and expressed as 50% nanogram inhibition, the high-density polyvalent Galbeta1-4GlcNAc (II) glycotopes occurring in natural gps, such as Pneumococcus type 14 capsular polysaccharide which is composed of repeating poly II residues, resulted in 9.0 x 10(4), 1.5 x 10(5), 2.3 x 10(4) and 2.1 x 10(4)-fold higher affinities to RCA1 than the monomeric Gal, linear I/II and Tri-antennary-II (Tri-II). Of the ligands tested and expressed as nanomoles of 50% inhibition, Tri-II was the best, being about 2, 4, 25.6 and 33.3 times better inhibitor than Di-II, II, I (Galbeta1-3GlcNAc) and Gal, respectively. From the results of this study, it is concluded that: (a) Galbeta1-4GlcNAc and other Galbeta1-related oligosaccharides are essential for lectin binding and their polyvalent form in macromolecules should be the most important recognition factor for RCA1; (b) the combining site of RCA1 may be a groove type, recognizing Galbeta1-4GlcNAc (II) as the major binding site; (c) its combining size may be large enough to accommodate a tetrasaccharide of beta-anomeric Gal at the non-reducing end and most complementary to human blood group I Ma active trisaccharide (Galbeta1-4GlcNAcbeta1-6Gal) and lacto-N-neotetraose (Galbeta1-4GlcNAcbeta1-3Galbeta1-4Glc); (d) RCA1 has a preference for the beta-anomer of Gal oligosaccharides with a Galbeta1-4 linkage > Galbeta1-6 > or = Galbeta1-3; (e) configuration of carbon-2, -3 -4 and -6 in Gal are essential for binding; (f) hydrophobic interaction in the vicinity of the binding site useful for sugar accommodation increases affinity. These results should be helpful for understanding the functional role of RCA1 and for characterizing glycotopes of mammalian complex carbohydrates.
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Affiliation(s)
- Albert M Wu
- Glyco-Immunochemistry Research Laboratory, Institute of Molecular and Cellular Biology, Chang-Gung University, Kwei-san, Tao-yuan 333, Taiwan.
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Singh T, Wu J, Peumans W, Rougé P, Van Damme E, Alvarez R, Blixt O, Wu A. Carbohydrate specificity of an insecticidal lectin isolated from the leaves of Glechoma hederacea (ground ivy) towards mammalian glycoconjugates. Biochem J 2006; 393:331-41. [PMID: 16156719 PMCID: PMC1383692 DOI: 10.1042/bj20051162] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Preliminary studies indicated that the potent insecticidal lectin, Gleheda, from the leaves of Glechoma hederacea (ground ivy) preferentially agglutinates human erythrocytes carrying the Tn (GalNAcalpha1-Ser/Thr) antigen. However, no details have been reported yet with respect to the fine specificity of the lectin. To corroborate the molecular basis of the insecticidal activity and physiological function of Gleheda, it is necessary to identify the recognition factors that are involved in the Gleheda-glycotope interaction. In the present study, the requirement of high-density multivalent carbohydrate structural units for Gleheda binding and a fine-affinity profile were evaluated using ELLSA (enzyme-linked lectinosorbent assay) with our extended glycan/ligand collections, a glycan array and molecular modelling. From the results, we concluded that a high-density of exposed multivalent Tn-containing glycoproteins (natural armadillo and asialo ovine salivary glycoproteins) were the most potent factors for Gleheda binding. They were, on a nanogram basis, 6.5x10(5), 1.5x10(4) and 3.1x10(3) times more active than univalent Gal (galactose), GalNAc (N-acetylgalactosamine) and Tn respectively. Among mono- and oligo-saccharides examined, simple clustered Tn (molecular mass <3000 Da) from ovine salivary glycoprotein was the best, being 37.5 and 1.7x10(3) times better than GalNAc and Gal respectively. GalNAc glycosides were significantly more active than Gal glycosides, indicating that the N-acetamido group at C-2 plays an important role in Gleheda binding. The results of glycan array support the conclusions drawn with respect to the specificity of Gleheda based on the ELLSA assays. These findings combined with the results of the molecular modelling and docking indicate the occurrence of a primary GalNAcalpha1-binding site in the Gleheda monomer. However, the extraordinary binding feature of Gleheda for glycoproteins demonstrates the importance of affinity enhancement by high-density multivalent glycotopes in the ligand-lectin interactions in biological processes.
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Affiliation(s)
- Tanuja Singh
- *Glyco-immunochemistry Research Laboratory, Institute of Molecular and Cellular Biology, College of Medicine, Chang-Gung University, Kwei-San, Tao-Yuan, 333, Taiwan
| | - June H. Wu
- †Department of Microbiology and Immunology, College of Medicine, Chang-Gung University, Kwei-San, Tao-Yuan, 333, Taiwan
| | - Willy J. Peumans
- ‡Department of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium
| | - Pierre Rougé
- §Surfaces Cellulaires et Signalisation chez les Végétaux, UMR-CNRS 5546, Pôle de Biotechnologie végétale, Chemin de Borde-Rouge, 31326 Castanet Tolosan, France
| | - Els J. M. Van Damme
- ‡Department of Molecular Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Gent, Belgium
| | - Richard A. Alvarez
- ∥Department of Biochemistry and Molecular Biology, University of Oklahoma, Health Sciences Center, Oklahoma City, OK 73104, U.S.A
| | - Ola Blixt
- ¶Department of Molecular Biology, The Scripps Research Institute, La Jolla, CA 92037, U.S.A
| | - Albert M. Wu
- *Glyco-immunochemistry Research Laboratory, Institute of Molecular and Cellular Biology, College of Medicine, Chang-Gung University, Kwei-San, Tao-Yuan, 333, Taiwan
- To whom correspondence should be addressed (email )
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Hsu KL, Pilobello KT, Mahal LK. Analyzing the dynamic bacterial glycome with a lectin microarray approach. Nat Chem Biol 2006; 2:153-7. [PMID: 16462751 DOI: 10.1038/nchembio767] [Citation(s) in RCA: 185] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2005] [Accepted: 01/13/2006] [Indexed: 11/09/2022]
Abstract
Glycosylation of bacterial cell surfaces is emerging as a critical factor in symbiosis, pathogenesis, cell-cell interactions and immune evasion. The lack of high-throughput analytical tools to examine bacterial glycans has been a major obstacle to the field and has hindered closer examination of the dynamics of carbohydrate variation. We have recently developed a lectin microarray for the analysis of glycoproteins. Herein we present a rapid analytical system based on this technology for the examination of bacterial glycans. The glycosylation pattern observed distinguishes closely related Escherichia coli strains from one another, providing a facile means of fingerprinting bacteria. In addition, dynamic alterations in the carbohydrate coat of a pathogenic E. coli strain are readily observed. The fast evaluation of real-time alterations in surface-carbohydrate epitopes allows examination of the dynamic role of bacterial sugars in response to external stimuli such as the immune system.
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Affiliation(s)
- Ku-Lung Hsu
- Department of Chemistry and Biochemistry, Center for Systems and Synthetic Biology, Institute for Cellular and Molecular Biology, University of Texas at Austin, 1 University Station, A5300, Austin, Texas 78712-0265, USA
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