1
|
Freire T, Landeira M, Giacomini C, Festari MF, Pittini Á, Cardozo V, Brosque A, Monin L, da Costa V, Faral-Tello P, Robello C, Osinaga E. Trypanosoma cruzi-Derived Molecules Induce Anti-Tumour Protection by Favouring Both Innate and Adaptive Immune Responses. Int J Mol Sci 2022; 23:ijms232315032. [PMID: 36499361 PMCID: PMC9739173 DOI: 10.3390/ijms232315032] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/07/2022] [Accepted: 11/10/2022] [Indexed: 12/05/2022] Open
Abstract
Lung cancer remains the leading cause of cancer mortality worldwide. Thus, the development of strategies against this type of cancer is of high value. Parasite infections can correlate with lower cancer incidence in humans and their use as vaccines has been recently explored in preclinical models. In this study, we investigated whether immunisations with a Trypanosoma cruzi lysate from epimastigotes protect from lung tumour growth in mice. We also explore the role of parasite glycans in the induction of the protective immune response. A pre-clinical murine cancer model using the lung tumour cell line LL/2 was used to evaluate the anti-tumour potential, both in preventive and therapeutic settings, of a T. cruzi epimastigote-derived protein lysate. Immunisation with the parasite lysate prevents tumour growth and induces both humoral and cellular anti-tumour immune responses to LL-2 cancer cells. The induced immunity and tumour protection were associated with the activation of natural killer (NK) cells, the production of interferon-γ (IFN-γ) and tumour cell cytotoxicity. We also show that mannose residues in the T. cruzi lysate induce Toll-like receptor (TLR) signalling. The evaluated T. cruzi lysate possesses anti-tumour properties likely by activating innate and adaptive immunity in a process where carbohydrates seem to be essential.
Collapse
Affiliation(s)
- Teresa Freire
- Laboratorio de Inmunomodulación y Vacunas, Departamento Inmunobiología, Facultad de Medicina, UdelaR, Gral Flores 2125, Montevideo 11800, Uruguay
- Correspondence: (T.F.); (E.O.)
| | - Mercedes Landeira
- Laboratorio de Inmunomodulación y Vacunas, Departamento Inmunobiología, Facultad de Medicina, UdelaR, Gral Flores 2125, Montevideo 11800, Uruguay
| | - Cecilia Giacomini
- Laboratorio de Bioquímica, Departamento de Biociencias, Facultad de Química, UdelaR, Gral Flores 2124, Montevideo 11800, Uruguay
| | - María Florencia Festari
- Laboratorio de Inmunomodulación y Vacunas, Departamento Inmunobiología, Facultad de Medicina, UdelaR, Gral Flores 2125, Montevideo 11800, Uruguay
| | - Álvaro Pittini
- Departamento de Inmunobiología, Facultad de Medicina, UdelaR, Gral Flores 2125, Montevideo 11800, Uruguay
- Laboratorio de Glicobiología e Inmunología Tumoral, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Viviana Cardozo
- Laboratorio de Glicobiología e Inmunología Tumoral, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Alina Brosque
- Laboratorio de Glicobiología e Inmunología Tumoral, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Leticia Monin
- Laboratorio de Glicobiología e Inmunología Tumoral, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Valeria da Costa
- Laboratorio de Inmunomodulación y Vacunas, Departamento Inmunobiología, Facultad de Medicina, UdelaR, Gral Flores 2125, Montevideo 11800, Uruguay
| | - Paula Faral-Tello
- Laboratorio de Interacciones Hospedero-Patógeno, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
| | - Carlos Robello
- Laboratorio de Interacciones Hospedero-Patógeno, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
- Departamento de Bioquímica, Facultad de Medicina, UdelaR, Gral Flores 2125, Montevideo 11800, Uruguay
| | - Eduardo Osinaga
- Departamento de Inmunobiología, Facultad de Medicina, UdelaR, Gral Flores 2125, Montevideo 11800, Uruguay
- Laboratorio de Glicobiología e Inmunología Tumoral, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay
- Correspondence: (T.F.); (E.O.)
| |
Collapse
|
2
|
da Costa V, Mariño KV, Rodríguez-Zraquia SA, Festari MF, Lores P, Costa M, Landeira M, Rabinovich GA, van Vliet SJ, Freire T. Lung Tumor Cells with Different Tn Antigen Expression Present Distinctive Immunomodulatory Properties. Int J Mol Sci 2022; 23:ijms231912047. [PMID: 36233358 PMCID: PMC9570357 DOI: 10.3390/ijms231912047] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/22/2022] [Accepted: 09/22/2022] [Indexed: 12/24/2022] Open
Abstract
Lung cancer is the first leading cause of cancer-related deaths in the world. Aberrant glycosylation in lung tumors leads to the expression of tumor-associated carbohydrate structures, such as the Tn antigen, consisting of N-acetyl-galactosamine (GalNAc) linked to a serine or threonine residue in proteins (α-GalNAc-O-Ser/Thr). The Tn antigen can be recognized by the Macrophage Galactose/GalNAc lectin (MGL), which mediates various immune regulatory and tolerogenic functions, mainly by reprogramming the maturation of function of dendritic cells (DCs). In this work, we generated two different Tn-expressing variants from the Lewis-type lung murine cancer cell line LL/2, which showed different alterations in the O-glycosylation pathways that influenced the interaction with mouse MGL2 and the immunomodulatory properties of DCs. Thus, the identification of the biological programs triggered by Tn+ cancer cells might contribute to an improved understanding of the molecular mechanisms elicited by MGL-dependent immune regulatory circuits.
Collapse
Affiliation(s)
- Valeria da Costa
- Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo 11800, Uruguay
| | - Karina V. Mariño
- Laboratorio de Glicómica Funcional y Molecular, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires 1428, Argentina
| | - Santiago A. Rodríguez-Zraquia
- Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo 11800, Uruguay
| | - María Florencia Festari
- Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo 11800, Uruguay
| | - Pablo Lores
- Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo 11800, Uruguay
| | - Monique Costa
- Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo 11800, Uruguay
| | - Mercedes Landeira
- Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo 11800, Uruguay
| | - Gabriel A. Rabinovich
- Laboratorio de Glicomedicina, Instituto de Biología y Medicina Experimental (IBYME), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires 1428, Argentina
| | - Sandra J. van Vliet
- Department of Molecular Cell Biology and Immunology, Amsterdam UMC, Location Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
- Amsterdam Institute for Infection and Immunity, Cancer Immunology, 1081 HV Amsterdam, The Netherlands
- Cancer Center Amsterdam, Cancer Biology and Immunology, 1081 HV Amsterdam, The Netherlands
| | - Teresa Freire
- Laboratorio de Inmunomodulación y Vacunas, Departamento de Inmunobiología, Facultad de Medicina, Universidad de La República, Montevideo 11800, Uruguay
- Correspondence:
| |
Collapse
|
3
|
Mancini RSN, de Jesus FP, da Rocha AM, Carvalho AZ, Rocha DL. An automated flow system for in-line extraction of proteins and separation of jacalin using a low-cost stationary phase. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1130-1131:121806. [PMID: 31670106 DOI: 10.1016/j.jchromb.2019.121806] [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: 11/27/2018] [Revised: 08/12/2019] [Accepted: 09/13/2019] [Indexed: 11/28/2022]
Abstract
Lectins are carbohydrate binding proteins with many physiological and biotechnological applications. Isolation of proteins is normally time-consuming and encompasses multiple and, sometimes, complicated steps that hinder reproducibility and yield. Affinity chromatography is an efficient way to simplify and improve protein purification, however often requiring an expensive and fragile stationary phase. In this regard, automated flow-based systems minimize the time for extraction of species from solid samples without hindering the features of batch procedures. In this work, a new inexpensive affinity-based stationary phase was developed for in-line separation of jacalin, a galactose-binding lectin from jackfruit seeds. In the flow manifold, in-line extraction of proteins was also carried out with continuous monitoring using the spectrophotometric Biuret assay. For protein determination, linear response was observed from 3.0 to 15 g L-1. The results of the analysis of protein extracts from jackfruit seeds obtained with the herein described procedure and batch procedure agreed with 95% confidence level. Quantitative extraction of proteins from jackfruit seed powder required recirculation of extraction buffer for 15 min through a lab-made polymethylmethacrylate (PMMA) column containing 200 mg of the crude seed powder. In the chromatographic step, jacalin was isolated after 300 s. Therefore, three essential steps for jacalin isolation were performed in one manifold in a fast way, minimizing sample consumption and solution handling. Additionally, the versatile and multi-task developed flow manifold can be useful for routine analysis and preparative procedures, being adaptable for the extraction and separation of other species from solid matrixes with continuous monitoring of the processes.
Collapse
Affiliation(s)
- Rodrigo S N Mancini
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil
| | - Fernanda P de Jesus
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil
| | - Alessandra M da Rocha
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil
| | - Alexandre Z Carvalho
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil
| | - Diogo L Rocha
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, 09210-580 Santo André, SP, Brazil.
| |
Collapse
|
4
|
Zeng F, Wunderer J, Salvenmoser W, Ederth T, Rothbächer U. Identifying adhesive components in a model tunicate. Philos Trans R Soc Lond B Biol Sci 2019; 374:20190197. [PMID: 31495315 DOI: 10.1098/rstb.2019.0197] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Tunicates populate a great variety of marine underwater substrates worldwide and represent a significant concern in marine shipping and aquaculture. Adhesives are secreted from the anterior papillae of their swimming larvae, which attach and metamorphose into permanently adhering, filter-feeding adults. We recently described the cellular composition of the sensory adhesive organ of the model tunicate Ciona intestinalis in great detail. Notably, the adhesive secretions of collocytes accumulate at the tip of the organ and contain glycoproteins. Here, we further explore the components of adhesive secretions and have screened for additional specificities that may influence adhesion or cohesion of the Ciona glue, including other carbohydrate moieties, catechols and substrate properties. We found a distinct set of sugar residues in the glue recognized by specific lectins with little overlap to other known marine adhesives. Surprisingly, we also detect catechol residues that likely originate from an adjacent cellular reservoir, the test cells. Furthermore, we provide information on substrate preferences where hydrophobicity outperforms charge in the attachment. Finally, we can influence the settlement process by the addition of hydrophilic heparin. The further analysis of tunicate adhesive strategies should provide a valuable knowledge source in designing physiological adhesives or green antifoulants. This article is part of the theme issue 'Transdisciplinary approaches to the study of adhesion and adhesives in biological systems'.
Collapse
Affiliation(s)
- Fan Zeng
- Department of Evolutionary Developmental Biology, Institute of Zoology, University Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - Julia Wunderer
- Department of Evolutionary Developmental Biology, Institute of Zoology, University Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - Willi Salvenmoser
- Department of Evolutionary Developmental Biology, Institute of Zoology, University Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| | - Thomas Ederth
- Division of Molecular Physics, Department of Physics, Chemistry and Biology (IFM), Linköping University, 581 83 Linköping, Sweden
| | - Ute Rothbächer
- Department of Evolutionary Developmental Biology, Institute of Zoology, University Innsbruck, Technikerstrasse 25, 6020 Innsbruck, Austria
| |
Collapse
|
5
|
Zeng Q, Lin F, Zeng L, Deng Y, Li L. Purification and characterization of a novel immunomodulatory lectin from Artocarpus hypargyreus Hance. Int Immunopharmacol 2019; 71:285-294. [DOI: 10.1016/j.intimp.2019.03.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 03/14/2019] [Accepted: 03/14/2019] [Indexed: 01/17/2023]
|
6
|
Arora S, Saxena V, Ayyar BV. Affinity chromatography: A versatile technique for antibody purification. Methods 2016; 116:84-94. [PMID: 28012937 DOI: 10.1016/j.ymeth.2016.12.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/16/2016] [Accepted: 12/17/2016] [Indexed: 12/19/2022] Open
Abstract
Antibodies continue to be extremely utilized entities in myriad applications including basic research, imaging, targeted delivery, chromatography, diagnostics, and therapeutics. At production stage, antibodies are generally present in complex matrices and most of their intended applications necessitate purification. Antibody purification has always been a major bottleneck in downstream processing of antibodies, due to the need of high quality products and associated high costs. Over the years, extensive research has focused on finding better purification methodologies to overcome this holdup. Among a plethora of different techniques, affinity chromatography is one of the most selective, rapid and easy method for antibody purification. This review aims to provide a detailed overview on affinity chromatography and the components involved in purification. An array of support matrices along with various classes of affinity ligands detailing their underlying working principles, together with the advantages and limitations of each system in purifying different types of antibodies, accompanying recent developments and important practical methodological considerations to optimize purification procedure are discussed.
Collapse
Affiliation(s)
- Sushrut Arora
- Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Vikas Saxena
- Center for Vascular and Inflammatory Diseases, School of Medicine, University of Maryland, Baltimore, MD 21201, USA
| | - B Vijayalakshmi Ayyar
- Department of Biochemistry and Molecular Biology, Baylor College of Medicine, Houston, TX 77030, USA.
| |
Collapse
|
7
|
Immel F, Broussard C, Catherinet B, Plasseraud L, Alcaraz G, Bundeleva I, Marin F. The Shell of the Invasive Bivalve Species Dreissena polymorpha: Biochemical, Elemental and Textural Investigations. PLoS One 2016; 11:e0154264. [PMID: 27213644 PMCID: PMC4877012 DOI: 10.1371/journal.pone.0154264] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 04/11/2016] [Indexed: 11/18/2022] Open
Abstract
The zebra mussel Dreissena polymorpha is a well-established invasive model organism. Although extensively used in environmental sciences, virtually nothing is known of the molecular process of its shell calcification. By describing the microstructure, geochemistry and biochemistry/proteomics of the shell, the present study aims at promoting this species as a model organism in biomineralization studies, in order to establish a bridge with ecotoxicology, while sketching evolutionary conclusions. The shell of D. polymorpha exhibits the classical crossed-lamellar/complex crossed lamellar combination found in several heterodont bivalves, in addition to an external thin layer, the characteristics of which differ from what was described in earlier publication. We show that the shell selectively concentrates some heavy metals, in particular uranium, which predisposes D. polymorpha to local bioremediation of this pollutant. We establish the biochemical signature of the shell matrix, demonstrating that it interacts with the in vitro precipitation of calcium carbonate and inhibits calcium carbonate crystal formation, but these two properties are not strongly expressed. This matrix, although overall weakly glycosylated, contains a set of putatively calcium-binding proteins and a set of acidic sulphated proteins. 2D-gels reveal more than fifty proteins, twenty of which we identify by MS-MS analysis. We tentatively link the shell protein profile of D. polymorpha and the peculiar recent evolution of this invasive species of Ponto-Caspian origin, which has spread all across Europe in the last three centuries.
Collapse
Affiliation(s)
- Françoise Immel
- Laboratoire de Biogenèse Membranaire UMR5200, CNRS, Université de Bordeaux, Villenave d'Ornon, France
- Biogéosciences UMR6282, CNRS, Université de Bourgogne Franche-Comté, Dijon, France
- * E-mail: (FI); (FM)
| | - Cédric Broussard
- Institut Cochin, INSERM U1016, CNRS UMR8104, Université Paris Descartes, Paris, France
- Plate-forme Protéomique 3P5, Université Paris Descartes, Sorbonne Paris Cité, Paris, France
| | - Bastien Catherinet
- Biogéosciences UMR6282, CNRS, Université de Bourgogne Franche-Comté, Dijon, France
| | - Laurent Plasseraud
- ICMUB UMR6302, CNRS, Université de Bourgogne Franche-Comté, Dijon, France
| | - Gérard Alcaraz
- UPSP PROXISS, Département Agronomie Environnement AgroSupDijon, Dijon, France
| | - Irina Bundeleva
- Biogéosciences UMR6282, CNRS, Université de Bourgogne Franche-Comté, Dijon, France
| | - Frédéric Marin
- Biogéosciences UMR6282, CNRS, Université de Bourgogne Franche-Comté, Dijon, France
- * E-mail: (FI); (FM)
| |
Collapse
|
8
|
Hernandez Armada D, Santos JT, Richards MR, Cairo CW. Protecting group-free immobilization of glycans for affinity chromatography using glycosylsulfonohydrazide donors. Carbohydr Res 2015; 417:109-16. [PMID: 26454791 DOI: 10.1016/j.carres.2015.09.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2015] [Revised: 09/09/2015] [Accepted: 09/09/2015] [Indexed: 10/23/2022]
Abstract
A variety of applications in glycobiology exploit affinity chromatography through the immobilization of glycans to a solid support. Although several strategies are known, they may provide certain advantages or disadvantages in how the sugar is attached to the affinity matrix. Additionally, the products of some methods may be hard to characterize chemically due to non-specific reactions. The lack of specificity in standard immobilization reactions makes affinity chromatography with expensive oligosaccharides challenging. As a result, methods for specific and efficient immobilization of oligosaccharides remain of interest. Herein, we present a method for the immobilization of saccharides using N'-glycosylsulfonohydrazide (GSH) carbohydrate donors. We have compared GSH immobilization to known strategies, including the use of divinyl sulfone (DVS) and cyanuric chloride (CC), for the generation of affinity matrices. We compared immobilization methods by determining their immobilization efficiency, based on a comparison of the mass of immobilized carbohydrate and the concentration of active binding sites (determined using lectins). Our results indicate that immobilization using GSH donors can provide comparable amounts of carbohydrate epitopes on solid support while consuming almost half of the material required for DVS immobilization. The lectin binding capacity observed for these two methods suggests that GSH immobilization is more efficient. We propose that this method of oligosaccharide immobilization will be an important tool for glycobiologists working with precious glycan samples purified from biological sources.
Collapse
Affiliation(s)
- Daniel Hernandez Armada
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Jobette T Santos
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Michele R Richards
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Christopher W Cairo
- Alberta Glycomics Centre, Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada.
| |
Collapse
|
9
|
Semchenko EA, Day CJ, Moutin M, Wilson JC, Tiralongo J, Korolik V. Structural heterogeneity of terminal glycans in Campylobacter jejuni lipooligosaccharides. PLoS One 2012; 7:e40920. [PMID: 22815868 PMCID: PMC3397941 DOI: 10.1371/journal.pone.0040920] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Accepted: 06/19/2012] [Indexed: 11/24/2022] Open
Abstract
Lipooligosaccharides of the gastrointestinal pathogen Campylobacter jejuni are regarded as a major virulence factor and are implicated in the production of cross-reactive antibodies against host gangliosides, which leads to the development of autoimmune neuropathies such as Guillain-Barré and Fisher Syndromes. C. jejuni strains are known to produce diverse LOS structures encoded by more than 19 types of LOS biosynthesis clusters. This study demonstrates that the final C. jejuni LOS structure cannot always be predicted from the genetic composition of the LOS biosynthesis cluster, as determined by novel lectin array analysis of the terminal LOS glycans. The differences were shown to be partially facilitated by the differential on/off status of three genes wlaN, cst and cj1144-45. The on/off status of these genes was also analysed in C. jejuni strains grown in vitro and in vivo, isolated directly from the host animal without passaging, using immunoseparation. Importantly, C. jejuni strains 331, 421 and 520 encoding cluster type C were shown to produce different LOS, mimicking asialo GM1, asialo GM2 and a heterogeneous mix of gangliosides and other glycoconjugates respectively. In addition, individual C. jejuni colonies were shown to consistently produce heterogeneous LOS structures, irrespective of the cluster type and the status of phase variable genes. Furthermore we describe C. jejuni strains (351 and 375) with LOS clusters that do not match any of the previously described LOS clusters, yet are able to produce LOS with asialo GM2-like mimicries. The LOS biosynthesis clusters of these strains are likely to contain genes that code for LOS biosynthesis machinery previously not identified, yet capable of synthesising LOS mimicking gangliosides.
Collapse
Affiliation(s)
- Evgeny A. Semchenko
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Christopher J. Day
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Marc Moutin
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Jennifer C. Wilson
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Joe Tiralongo
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
| | - Victoria Korolik
- Institute for Glycomics, Griffith University, Gold Coast, Queensland, Australia
- * E-mail:
| |
Collapse
|
10
|
Reuel NF, Ahn JH, Kim JH, Zhang J, Boghossian AA, Mahal LK, Strano MS. Transduction of Glycan–Lectin Binding Using Near-Infrared Fluorescent Single-Walled Carbon Nanotubes for Glycan Profiling. J Am Chem Soc 2011; 133:17923-33. [DOI: 10.1021/ja2074938] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Nigel F. Reuel
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jin-Ho Ahn
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jong-Ho Kim
- Department of Chemical Engineering, Hanyang University, Ansan 426-791, Republic of Korea
| | - Jingqing Zhang
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ardemis A. Boghossian
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Lara K. Mahal
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Michael S. Strano
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
11
|
Immobilization of carbohydrate epitopes for surface plasmon resonance using the Staudinger ligation. Carbohydr Res 2010; 345:2641-7. [DOI: 10.1016/j.carres.2010.09.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Revised: 09/09/2010] [Accepted: 09/15/2010] [Indexed: 02/06/2023]
|
12
|
Jagtap UB, Bapat VA. Artocarpus: a review of its traditional uses, phytochemistry and pharmacology. JOURNAL OF ETHNOPHARMACOLOGY 2010; 129:142-166. [PMID: 20380874 DOI: 10.1016/j.jep.2010.03.031] [Citation(s) in RCA: 115] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2009] [Revised: 03/19/2010] [Accepted: 03/21/2010] [Indexed: 05/29/2023]
Abstract
The genus Artocarpus (Moraceae) comprises about 50 species of evergreen and deciduous trees. Economically, the genus is of appreciable importance as a source of edible fruit, yield fairly good timber and is widely used in folk medicines. The aim of the present review is to present comprehensive information of the chemical constituents, biological and pharmacological research on Artocarpus which will be presented and critically evaluated. The close connection between traditional and modern sources for ethnopharmacological uses of Artocarpus species, especially for treatment against inflammation, malarial fever, diarrhoea, diabetes and tapeworm infection. Artocarpus species are rich in phenolic compounds including flavonoids, stilbenoids, arylbenzofurons and Jacalin, a lectin. The extracts and metabolites of Artocarpus particularly those from leaves, bark, stem and fruit possess several useful bioactive compounds and recently additional data are available on exploitation of these compounds in the various biological activities including antibacterial, antitubercular, antiviral, antifungal, antiplatelet, antiarthritic, tyrosinase inhibitory and cytotoxicity. Several pharmacological studies of the natural products from Artocarpus have conclusively established their mode of action in treatment of various diseases and other health benefits. Jacalin, a lectin present in seeds of this plant has a wide range of activities. Strong interdisciplinary programmes that incorporate conventional and new technologies will be critical for the future development of Artocarpus as a promising source of medicinal products. In the present review, attempts on the important findings have been made on identification; synthesis and bioactivity of metabolites present in Artocarpus which have been highlighted along with the current trends in research on Artocarpus.
Collapse
Affiliation(s)
- U B Jagtap
- Department of Biotechnology, Shivaji University, Vidyanagar, Kolhapur, (MS), India
| | | |
Collapse
|
13
|
Teixeira DM, Braga RC, Horta AC, Moreira RA, de Brito AC, Maciel JS, Feitosa JP, de Paula RC. Spondias purpurea Exudate polysaccharide as affinity matrix for the isolation of a galactose-binding-lectin. Carbohydr Polym 2007. [DOI: 10.1016/j.carbpol.2007.04.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
14
|
Duarte IS, Zollner RL, Bueno SMA. In Vitro Evaluation of Biospecific and Pseudobiospecific Ligands Aimed at Extracorporeal Treatment for Immunoglobulin E Removal. Artif Organs 2006; 30:606-14. [PMID: 16911314 DOI: 10.1111/j.1525-1594.2006.00269.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This work investigated the potential use of an alternative adsorbent to anti-immunoglobulin E (IgE)-agarose for IgE selective adsorption therapy. A screening of several commercially available adsorbents (Concanavalin A, Lens culinaris[Lc], d-tryptophan, poly-l-lysine, and aminohexyl immobilized on agarose) was done through batch system assays, considering some criteria, such as adsorption capacity, selectivity, and biocompatibility. In the Lc-agarose adsorbent, total IgE, and specific IgE--for the airborne allergens Dermatophagoides pteronyssinus and Blomia tropicalis--were significantly better removed (63, 58, and 59%, respectively) than immunoglobulin G (19%), immunoglobulin A (33%), immunoglobulin M (9%), and albumin (18%). This adsorbent was packed into a column and the effect of superficial velocity, ratio of plasma volume to bed volume, number of perfusions, and temperature on IgE adsorption were evaluated. In vitro simulation of therapeutic adsorption (single perfusion) indicated that about 50% of total IgE could be eliminated.
Collapse
Affiliation(s)
- Isa S Duarte
- School of Chemical Engineering, State University of Campinas, Campinas, São Paulo, Brazil
| | | | | |
Collapse
|
15
|
Bourne Y, Astoul CH, Zamboni V, Peumans WJ, Menu-Bouaouiche L, Van Damme EJM, Barre A, Rougé P. Structural basis for the unusual carbohydrate-binding specificity of jacalin towards galactose and mannose. Biochem J 2002; 364:173-80. [PMID: 11988090 PMCID: PMC1222559 DOI: 10.1042/bj3640173] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Evidence is presented that the specificity of jacalin, the seed lectin from jack fruit (Artocarpus integrifolia), is not directed exclusively against the T-antigen disaccharide Galbeta1,3GalNAc, lactose and galactose, but also against mannose and oligomannosides. Biochemical analyses based on surface-plasmon-resonance measurements, combined with the X-ray-crystallographic determination of the structure of a jacalin-alpha-methyl-mannose complex at 2 A resolution, demonstrated clearly that jacalin is fully capable of binding mannose. Besides mannose, jacalin also interacts readily with glucose, N-acetylneuraminic acid and N-acetylmuramic acid. Structural analyses demonstrated that the relatively large size of the carbohydrate-binding site enables jacalin to accommodate monosaccharides with different hydroxyl conformations and provided unambiguous evidence that the beta-prism structure of jacalin is a sufficiently flexible structural scaffold to confer different carbohydrate-binding specificities to a single lectin.
Collapse
Affiliation(s)
- Yves Bourne
- AFMB, UMR-CNRS 6098, 31 Chemin Joseph Aiguier, 13402 Marseille Cedex 20, France
| | | | | | | | | | | | | | | |
Collapse
|
16
|
Yu LG, Milton JD, Fernig DG, Rhodes JM. Opposite effects on human colon cancer cell proliferation of two dietary Thomsen-Friedenreich antigen-binding lectins. J Cell Physiol 2001; 186:282-7. [PMID: 11169464 DOI: 10.1002/1097-4652(200102)186:2<282::aid-jcp1028>3.0.co;2-2] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Increased cell surface expression of the Thomsen-Friedenreich antigen (TF antigen, Galbeta1-3GalNAcalpha-) is a common feature in malignant and pre-malignant epithelia. Our previous studies have shown that dietary TF-binding lectins from peanut (Arachis hypogea) and edible mushroom (Agaricus bisporus) produce marked but different effects on human intestinal epithelial cell proliferation. This study investigates the proliferative effects of the other two known dietary TF-binding lectins: jacalin (Artocarpus integrifolia, JAC) and amaranth lectin (Amaranthus caudatus, ACA). JAC produced dose-dependent and non-cytotoxic inhibition of proliferation in HT29 human colon cancer cells with maximal effects of 46 +/- 4% at 20 microg/ml, whereas ACA produced dose-dependent stimulation of proliferation with maximal effects of 22 +/- 3% at 20 microg/ml when assessed both by incorporation of [3H]thymidine into DNA and by cell counting. The lectin-mediated effects were inhibitable by the presence of appropriate Galbeta1-3GalNAc-expressing glycoproteins but differences existed between JAC and ACA in their patterns of inhibition by such substances. Ligand binding equilibrium studies using iodinated lectins revealed different Kd of the two lectins for HT29 cell surface glycoproteins. Lectin blots of cell membrane extracts showed different binding patterns in all the four TF-binding lectins. These results provide further evidence that dietary TF-binding lectins can have marked effects on the proliferation of human malignant gastro-intestinal epithelial cells and hence may play a role in intestinal cancer development, and also show that the biological effects of dietary lectins cannot be predicted solely from their carbohydrate binding properties.
Collapse
Affiliation(s)
- L G Yu
- Department of Medicine, University of Liverpool, Liverpool L69 3GA, United Kingdom.
| | | | | | | |
Collapse
|
17
|
Chintalacharuvu SR, Emancipator SN. Differential glycosylation of two glycoproteins synthesized by murine B cells in response to IL-4 plus IL-5. Cytokine 2000; 12:1182-8. [PMID: 10930294 DOI: 10.1006/cyto.2000.0699] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We sought to determine whether selected cytokines, known to stimulate profoundly B-cell activation and differentiation, also have as yet unrecognized effects upon the glycosylation of secreted Ig and/or membrane-associated proteins. The glycosylation of both secreted IgM and membrane-bound MHC Class-I synthesized by CH12LX cells was detected by enzyme-lectin conjugates in immunoabsorption assays. Stimulation of B cells with IL-4 plus IL-5 significantly decreases the terminal glycosylation of secreted IgM, whereas LPS has a minor effect, despite the fact that both stimuli are equipotent for IgM secretion. Neither LPS nor IL-4 plus IL-5 affect MHC Class-I expression. However, IL-4 plus IL-5 substantially increases the terminal glycosylation of MHC Class-I produced from both mIgM(+)and mIgA(+)CH12LX cells. LPS has no or a modest effect on the terminal glycosylation of MHC Class-I produced from CH12LX cells. These results suggest that Th(2)-derived cytokines differentially influence the glycosylation of secreted and membrane-associated glycoproteins of B cells. In turn, this might elucidate the basis of aberrant glycosylation reported in conditions such as IgA nephropathy, cancer and rheumatoid arthritis.
Collapse
Affiliation(s)
- S R Chintalacharuvu
- Institute of Pathology, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | | |
Collapse
|
18
|
Zieler H, Garon CF, Fischer ER, Shahabuddin M. A tubular network associated with the brush-border surface of the Aedes aegypti midgut: implications for pathogen transmission by mosquitoes. J Exp Biol 2000; 203:1599-611. [PMID: 10769222 DOI: 10.1242/jeb.203.10.1599] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The mosquito Aedes aegypti is capable of transmitting a variety of pathogens to man and to other vertebrates. The midgut of this insect has been well-studied both as the tissue where the first contact occurs between ingested pathogens and the insect host, and as a model system for blood meal digestion in blood-sucking insects. To understand better the nature of the midgut surface encountered by parasites or viruses, we used scanning electron microscopy to identify the most prominent structures and cell morphologies on the luminal midgut surface. The luminal side of the midgut is a complex and layered set of structures. The microvilli that are found on most, but not all, cells are covered by a network of fine strands that we have termed the microvilli-associated network (MN). The MN strands are membranous, as shown by a membrane bilayer visible in cross sections of MN strands at high magnification in transmission electron micrographs. The MN is found in blood-fed as well as unfed mosquitoes and is not affected by chitinase treatment, suggesting that it is not related to the chitinous peritrophic membrane that is formed only after blood feeding. The cells in the midgut epithelium have two distinct morphologies: the predominant cell type is densely covered with microvilli, while cells with fewer microvilli are found interspersed throughout the midgut. We used lectins to probe for the presence of carbohydrates on the midgut surface. A large number of lectins bind to the luminal midgut surface, suggesting that a variety of sugar linkages are present on the structures visualized by electron microscopy. Some of these lectins partially block attachment of malaria ookinetes to the midgut surface in vitro. Thus, the mosquito midgut epithelium, like the lining of mammalian intestines, is complex, composed of a variety of cell types and extensively covered with surface carbohydrate that may play a role in pathogen attachment.
Collapse
Affiliation(s)
- H Zieler
- Medical Entomology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892-0425, USA
| | | | | | | |
Collapse
|
19
|
Rosa JC, De Oliveira PS, Garratt R, Beltramini L, Resing K, Roque-Barreira MC, Greene LJ. KM+, a mannose-binding lectin from Artocarpus integrifolia: amino acid sequence, predicted tertiary structure, carbohydrate recognition, and analysis of the beta-prism fold. Protein Sci 1999; 8:13-24. [PMID: 10210179 PMCID: PMC2144112 DOI: 10.1110/ps.8.1.13] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The complete amino acid sequence of the lectin KM+ from Artocarpus integrifolia (jackfruit), which contains 149 residues/mol, is reported and compared to those of other members of the Moraceae family, particularly that of jacalin, also from jackfruit, with which it shares 52% sequence identity. KM+ presents an acetyl-blocked N-terminus and is not posttranslationally modified by proteolytic cleavage as is the case for jacalin. Rather, it possesses a short, glycine-rich linker that unites the regions homologous to the alpha- and beta-chains of jacalin. The results of homology modeling implicate the linker sequence in sterically impeding rotation of the side chain of Asp141 within the binding site pocket. As a consequence, the aspartic acid is locked into a conformation adequate only for the recognition of equatorial hydroxyl groups on the C4 epimeric center (alpha-D-mannose, alpha-D-glucose, and their derivatives). In contrast, the internal cleavage of the jacalin chain permits free rotation of the homologous aspartic acid, rendering it capable of accepting hydrogen bonds from both possible hydroxyl configurations on C4. We suggest that, together with direct recognition of epimeric hydroxyls and the steric exclusion of disfavored ligands, conformational restriction of the lectin should be considered to be a new mechanism by which selectivity may be built into carbohydrate binding sites. Jacalin and KM+ adopt the beta-prism fold already observed in two unrelated protein families. Despite presenting little or no sequence similarity, an analysis of the beta-prism reveals a canonical feature repeatedly present in all such structures, which is based on six largely hydrophobic residues within a beta-hairpin containing two classic-type beta-bulges. We suggest the term beta-prism motif to describe this feature.
Collapse
Affiliation(s)
- J C Rosa
- Centro de Química de Proteínas and Departamento de Ginecologia e Obstetricia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brazil
| | | | | | | | | | | | | |
Collapse
|
20
|
Gurjar MM, Khan MI, Gaikwad SM. alpha-Galactoside binding lectin from Artocarpus hirsuta: characterization of the sugar specificity and binding site. BIOCHIMICA ET BIOPHYSICA ACTA 1998; 1381:256-64. [PMID: 9685671 DOI: 10.1016/s0304-4165(98)00034-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The hemagglutinin from the seeds of Artocarpus hirsuta was purified to homogeneity by ion-exchange chromatography on DEAE-cellulose and CM-sephadex. The native protein of molecular mass 60,000 (gel filtration) is made up of two pairs of unidentical subunits, alpha and beta with molecular masses of 15,800 and 14,130. The lectin is basic in nature (pI 8.5) and a glycoprotein with neutral sugar content of 6.25%. Rabbit as well as human erythrocytes (A, B and O) are agglutinated by the lectin. The lectin activity is neither affected by Ca2+, Mg2+ or Mn2+ nor by EDTA. Methyl alpha-D-galactopyranoside, pNP-alpha-D-galactopyranoside and pNP-alpha-D-N-acetylgalactosamine are the best inhibitors of the lectin. 4-Methylumbelliferyl-alpha-galactopyranoside fluorescence was quenched on binding to A. hirsuta lectin. The sugar has two binding sites per tetramer of the lectin with a Ka of 3.5x105 M-1 at 25 degrees C. Chemical modification studies indicate that the net positive charge associated with epsilon-NH2 of lysine residues and the phenyl ring of tyrosine are essential for the sugar binding activity of A. hirsuta lectin.
Collapse
Affiliation(s)
- M M Gurjar
- Division of Biochemical Sciences, National Chemical Laboratory, Pune 411008, India
| | | | | |
Collapse
|
21
|
Kabir S. Jacalin: a jackfruit (Artocarpus heterophyllus) seed-derived lectin of versatile applications in immunobiological research. J Immunol Methods 1998; 212:193-211. [PMID: 9672207 DOI: 10.1016/s0022-1759(98)00021-0] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Jacalin, the major protein from the jackfruit (Artocarpus heterophyllus) seeds, is a tetrameric two-chain lectin (molecular mass 65 kDa) combining a heavy alpha chain of 133 amino acid residues with a light beta chain of 20-21 amino acid residues. It is highly specific for the alpha-O-glycoside of the disaccharide Thomsen-Friedenreich antigen (Gal beta1-3GalNAc), even in its sialylated form. This property has made jacalin suitable for studying various O-linked glycoproteins, particularly human IgA1. Jacalin's uniqueness in being strongly mitogenic for human CD4+ T lymphocytes has made it a useful tool for the evaluation of the immune status of patients infected with human immunodeficiency virus (HIV)-1. The abundance of source material for the production of jacalin, its ease of purification, yield and stability have made it an attractive cost-effective lectin. It has found applications in diverse areas such as the isolation of human plasma glycoproteins (IgA1, C1-inhibitor, hemopexin, alpha2-HSG), the investigation of IgA-nephropathy, the analysis of O-linked glycoproteins and the detection of tumours.
Collapse
Affiliation(s)
- S Kabir
- Academic Research and Information Management, Stockholm, Sweden
| |
Collapse
|
22
|
Vaerman JP, Langendries AE, Giffroy DA, Kaetzel CS, Fiani CM, Moro I, Brandtzaeg P, Kobayashi K. Antibody against the human J chain inhibits polymeric Ig receptor-mediated biliary and epithelial transport of human polymeric IgA. Eur J Immunol 1998; 28:171-82. [PMID: 9485197 DOI: 10.1002/(sici)1521-4141(199801)28:01<171::aid-immu171>3.0.co;2-#] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
To emphasize the requirement for a J chain in native polymeric immunoglobulins for their selective transport into exocrine secretions, IgG, purified from two different antisera specific for the human J chain, was shown to: (i) bind in vitro to human polymeric IgA (pIgA) by density gradient ultracentrifugation; (ii) inhibit binding in vitro of rat secretory component to human pIgA; (iii) inhibit hepatic transport of human pIgA into rat bile in vivo; and (iv) inhibit apical transcytosis of pIgA in vitro by polarized human polymeric immunoglobulin receptor (pIgR)-expressing Madin-Darby canine kidney cells. Inhibition of biliary transport increased with the molar ratio of anti-J chain antibodies against pIgA and their incubation time. Anti-J chain F(ab')2 and Fab fragments also inhibited biliary transport, excluding a role for phagocytic clearance or excessive size of the immune complexes. Anti-human-Fc alpha Fab, bound to human pIgA in complexes of larger size than those with anti-J chain Fab, did not inhibit biliary transport of human pIgA. Propionic acid-denatured human pIgA, although containing J chains, was very poorly transported into rat bile. Altogether, our data strongly support, now also by in vivo experiments, the crucial role of the J chain of native pIgA in its selective pIgR-mediated transport into secretions, as suggested long ago by in vitro data only. Recent data on J chain-knockout mice, with low IgA levels in bile and feces, cannot explain the role of the J chain in contributing to the secretory component/pIgR-binding site of normal pIgA, but otherwise agree with our study.
Collapse
Affiliation(s)
- J P Vaerman
- Catholic University of Louvain, Institute of Cell Pathology, Unit of Experimental Medicine, Brussels, Belgium.
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Lafont V, Hivroz C, Carayon P, Dornand J, Favero J. The lectin jacalin specifically triggers cell signaling in CD4+ T lymphocytes. Cell Immunol 1997; 181:23-9. [PMID: 9344492 DOI: 10.1006/cimm.1997.1191] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The lectin jacalin was shown to specifically stimulate CD4(+) lymphocytes. This lectin, which presents a peptide highly similar to a sequence of the HIV external glycoprotein, interacts with CD4 and is able to inhibit in vitro HIV infection. Since jacalin binds also CD8, its mitogenic specificity cannot exclusively be attributed to its interaction with CD4. We therefore hypothesized that the lectin could trigger signals specifically associated with CD4. Here we show that jacalin triggers IL2 gene transcription only in CD4(+) lymphocytes. In parallel, we show that numerous proteins are tyrosine phosphorylated in this cell subset while only a restricted number of them are phosphorylated in CD8(+) cells. Moreover, we show that the tyrosine kinase p56lck, which is associated with both CD4 and CD8, is activated only in CD4(+) lymphocytes, making this lectin a good model for the study of cell signaling triggered in this restricted subpopulation.
Collapse
Affiliation(s)
- V Lafont
- Microbiologie et Pathologie Cellulaire Infectieuse, Université de Montpellier II, Place Eugène Bataillon, cc 100, Montpellier cedex 05, 34095, France
| | | | | | | | | |
Collapse
|
24
|
Mestecky J, Hamilton RG, Magnusson CG, Jefferis R, Vaerman JP, Goodall M, de Lange GG, Moro I, Aucouturier P, Radl J, Cambiaso C, Silvain C, Preud'homme JL, Kusama K, Carlone GM, Biewenga J, Kobayashi K, Skvaril F, Reimer CB. Evaluation of monoclonal antibodies with specificity for human IgA, IgA subclasses and allotypes and secretory component. Results of an IUIS/WHO collaborative study. J Immunol Methods 1996; 193:103-48. [PMID: 8699027 DOI: 10.1016/0022-1759(95)00289-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
51 monoclonal antibodies (McAb) with putative specificity for human IgA, the IgA subclasses, Am allotypes or secretory component (SC) were evaluated for immunoreactivity and specificity by nine laboratories employing immunodiffusion, agglutination, immunohistological assays, immunoblotting and direct binding and competitive inhibition enzyme immunoassays. McAbs specific for IgA PAN (n = 24), IgA1 (n = 7), IgA2 (n = 3), IgA2m(2) (n = 2), non-IgA2m(2) (n = 4) and SC or secretory IgA (n = 5) were identified that were immunoreactive and specific in the assays employed. The McAbs identified as IgA- or SC-reactive were shown to be non-reactive to human IgG, IgM, IgD, IgE, kappa and lambda by direct binding and competitive inhibition immunoassays. Interestingly, no McAbs with restricted specificity for IgA2m(1) were identified. Some McAbs displayed higher affinity and/or better performance in one or several of the assay groups. The IgA- and SC-specific McAbs identified in this international collaborative study have potential as immunochemical reference reagents to identify and quantitate monomeric and polymeric IgA in human serum and secretions.
Collapse
|
25
|
Abstract
Rabbit immunoglobulin G (IgG) was subjected to affinity chromatography on a column of jacalin-Sepharose 4B. While the majority of IgG molecules did not bind, a small fraction, representing about 25% of the total IgG applied, bound to jacalin-Sepharose 4B. The binding of rabbit IgG to jacalin was further evidenced by ELISA performed on jacalin coated microtitre plates. While the jacalin-retained IgG fraction displayed strong binding, the unretained fraction did not demonstrate any detectable binding. Upon SDS-PAGE, both the jacalin retained and unretained rabbit IgG fractions displayed identical protein profiles. Upon protein blotting it was demonstrated that jacalin binding sites were located only on the heavy chain of IgG. These results suggest that rabbit IgG molecules are heterogeneous with respect to their glycosylation patterns. A small fraction of rabbit IgG molecules binds jacalin and the process is probably mediated through O-linked oligosaccharides present on the heavy chain of IgG.
Collapse
Affiliation(s)
- S Kabir
- Department of Surgery, College of Medicine, Sultan Qaboos University, Oman
| | | | | |
Collapse
|
26
|
Corbeau P, Pasquali JL, Devaux C. Jacalin, a lectin interacting with O-linked sugars and mediating protection of CD4+ cells against HIV-1, binds to the external envelope glycoprotein gp120. Immunol Lett 1995; 47:141-3. [PMID: 8537092 DOI: 10.1016/0165-2478(95)00047-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- P Corbeau
- Centre de Tri des Molécules anti-HIV, CNRS UPR9008, INSERM U249, Montpellier, France
| | | | | |
Collapse
|
27
|
Pilatte Y, Rostoker G, Violleau K, Basta M, Hammer CH. Further identification of human plasma glycoproteins interacting with the galactose-specific lectin Jacalin. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL APPLICATIONS 1995; 668:1-11. [PMID: 7550965 DOI: 10.1016/0378-4347(95)00048-n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In this report we show that Jacalin binds the heme-binding protein hemopexin and the C4b-binding protein sgp120 in human plasma. The interaction of Jacalin with hemopexin confirms that a single O-linked oligosaccharide is sufficient to mediate binding of a protein to this lectin. Retention of sgp120 by immobilized Jacalin demonstrated that this protein was O-glycosylated and, therefore, clearly different from another C4b-binding protein, the complement protein C2 which is physicochemically similar but exclusively N-glycosylated. In addition, Jacalin was also shown to bind several proteolytic enzymes which remain to be identified.
Collapse
Affiliation(s)
- Y Pilatte
- INSERM unité 139, Institut Mondor de Médecine Moléculaire (IM3) CHU H. Mondor, Créteil, France
| | | | | | | | | |
Collapse
|
28
|
Booth JR, Munks R, Sokol RJ. Isolation of IgA1 from human serum by affinity chromatography using an immobilized extract of the albumin gland of Helix pomatia. Transfus Med 1995; 5:117-21. [PMID: 7655574 DOI: 10.1111/j.1365-3148.1995.tb00198.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An extract of the albumin gland of Helix pomatia was linked to Sepharose-4B and used to prepare IgA from group O human serum; immunoelectrophoresis showed that the preparation was free of IgG and IgM. From studies with specific IgA subclass antisera and by comparison with the activity of jacalin-produced material the Helix pomatia extract was found to be IgA1 specific. The preparation had red cell anti-A, B specificity and was suitable for standardizing and controlling anti-human IgA reagents. Preparations using six different carbohydrates as eluants inhibited the agglutination reaction between anti-human IgA and IgA-coated red cells to varying degrees. The pattern of reactions suggested that N-acetyl glucosamine was the IgA binding site for Helix pomatia; this differed from its blood group A determinant (N-acetyl galactosamine) which was the same as that for the IgA1 reactive component of jacalin.
Collapse
Affiliation(s)
- J R Booth
- Trent Regional Blood Transfusion Centre, Sheffield, U.K
| | | | | |
Collapse
|
29
|
To WY, Leung JC, Lai KN. Identification and characterization of human serum alpha2-HS glycoprotein as a jacalin-bound protein. BIOCHIMICA ET BIOPHYSICA ACTA 1995; 1249:58-64. [PMID: 7766684 DOI: 10.1016/0167-4838(95)00063-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We recently adopted immobilized jacalin as an affinity adsorbent to purify human serum IgA for laboratory study. In the course of our investigation, we detected a serum protein that co-eluted with IgA from jacalin-agarose affinity column. It constituted in significant quantity (24.0 +/- 0.9%, n = 30) of total jacalin-bound protein (JBP) and the yield was equivalent to 0.4 +/- 0.1 mg per ml serum. The molecular mass of this protein was 55 kDa with electromobility in the alpha 2 region as demonstrated by SDS-PAGE and immunoelectrophoresis. N-terminal microsequencing of this 55 kDa protein revealed that it is human alpha 2-HS glycoprotein (alpha 2HSG). The molecular interaction of alpha 2HSG with jacalin was characterized by competitive ELISA: human serum IgA, human colostrum secretory IgA (sIgA), and monosaccharides including D-galactose and melibiose exhibited strong inhibitory effect on its binding to jacalin. Accordingly, we propose that human alpha 2HSG binds in a similar manner as that of the bovine fetuin to jacalin. In addition, alpha 2HSG displays similar binding property to jacalin from different geographic area (India and Malaysia) and from different laboratory preparations (Sigma, Pierce and 'homemade' jacalin).
Collapse
Affiliation(s)
- W Y To
- Department of Medicine, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin
| | | | | |
Collapse
|
30
|
Vaerman JP, Langendries A, Vander Maelen C. Homogenous IgA monomers, dimers, trimers and tetramers from the same IgA myeloma serum. Immunol Invest 1995; 24:631-41. [PMID: 7622199 DOI: 10.3109/08820139509066863] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Starting from two IgA1 myeloma sera, the isolation of monoclonal monomeric, dimeric, trimeric and tetrameric IgA in a high state of purity and size homogeneity for each serum is described. The method combined repetitive gel filtrations on Ultrogel AcA22 with affinity chromatography on Jacalin-Sepharose. These various forms of pure polymeric IgA obtained from the same monoclonal IgA should allow a precise comparison of their respective structure and reactivity with different IgA-binding proteins, such as IgA Fc-receptors, the polymeric Ig receptor, and lectins.
Collapse
Affiliation(s)
- J P Vaerman
- Unit of Experimental Medicine, Catholic University of Louvain, Belgium
| | | | | |
Collapse
|
31
|
De Simone SG, Santos R, Araujo MF, Pinho RT. Preparative isolation of the lectin jacalin by anion-exchange high-performance liquid chromatography. J Chromatogr A 1994; 688:357-62. [PMID: 7894647 DOI: 10.1016/0021-9673(94)00907-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The lectin jacalin from Artocarpus integrifolia was purified to homogeneity in a single step by preparative anion-exchange high-performance liquid chromatography (HPLC). Selection of the optimum chromatographic parameters in gradient elution allowed a rapid procedure to be obtained for the qualitative and quantitative isolation of the most important alpha- and alpha'-jacalin components. A recovery of 27-33% was obtained from a total soluble extract using a polyacrylate-DEAE HPLC column. The identities of the two isolated polypeptides were established by N-terminal amino acid sequence analysis and from the IgA1 binding lectin activity.
Collapse
Affiliation(s)
- S G De Simone
- Department of Biochemistry and Molecular Biology, Oswaldo Cruz Institute, Rio de Janeiro, Brazil
| | | | | | | |
Collapse
|
32
|
Tuori A, Virtanen I, Uusitalo H. Lectin binding in the anterior segment of the bovine eye. ACTA ACUST UNITED AC 1994. [DOI: 10.1007/bf02388636] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
33
|
Kabir S, Daar AS. The composition and properties of jacalin, a lectin of diverse applications obtained from the jackfruit (Artocarpus heterophyllus) seeds. Immunol Invest 1994; 23:167-88. [PMID: 8070846 DOI: 10.3109/08820139409087798] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- S Kabir
- Department of Surgery College of Medicine, Sultan Qaboos University, Al-Khod, Muscat, Oman
| | | |
Collapse
|
34
|
Akerström B, Lindqvist A, Maelen CV, Grubb A, Lindahl G, Vaerman JP. Interaction between streptococcal protein Arp and different molecular forms of human immunoglobulin A. Mol Immunol 1994; 31:393-400. [PMID: 8152442 DOI: 10.1016/0161-5890(94)90117-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Protein Arp, the IgA-binding protein of the group A Streptococcus, has affinity for the Fc-part of IgA. The binding between protein Arp and several different molecular forms of human IgA was characterized. It was found that protein Arp bound with higher affinity to uncomplexed forms of IgA than to complexed forms (secretory IgA, alpha 1-antitrypsin-IgA and alpha 1-microglobulin-IgA). Thus, the affinity constant was 2.0-5.9 x 10(8) M-1 for the binding to monomeric, dimeric, trimeric, and quadrimeric IgA, and 4.5-5.0 x 10(7) M-1 for binding to the complexed forms. Among the uncomplexed IgA-molecules, the affinity constant was in the same range for J chain-containing forms (dimeric, trimeric and quadrimeric IgA) as for forms without J chain (monomeric and a particular quadrimeric IgA devoid of J chain). Western blotting demonstrated that protein Arp bound exclusively to the alpha-chain of all IgA-forms. Several lines of evidence pointed to a localization of the binding site to the C alpha 3-domain. First, protein Arp did not bind to three N-terminal alpha-chain fragments which lacked a region corresponding to the C alpha 3-domain, including that form a four-chain myeloma IgA, naturally occurring in plasma. Second, the binding to dimeric and tri/quadrimeric IgA was partially blocked by an added secretory component, which has been suggested to bind to the C alpha 2- and C alpha 3-domains of the alpha-chain. Finally, alpha 1-antitrypsin and alpha 1-microglobulin, in the weakly binding IgA-complexes, have been shown to be linked to the C alpha 3-domain via the penultimate amino acid residue of the alpha-chain peptide, supporting the hypothesis of a localization of the binding site of protein Arp to the C alpha 3-domain.
Collapse
Affiliation(s)
- B Akerström
- Department of Clinical Chemistry, University Hospital, Lund, Sweden
| | | | | | | | | | | |
Collapse
|
35
|
Chui SH, Lewis WH, Lam CW, Lai KN. Analysis of charge of kappa and lambda chain-containing serum immunoglobulin A by immunoblotting and densitometry. Clin Biochem 1993; 26:97-100. [PMID: 8485863 DOI: 10.1016/0009-9120(93)90035-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A novel method for studying the charge distribution of different subclasses of serum immunoglobulin A (defined by the light chains) is described. Affinity-chromatography purified immunoglobulins were focused in polyacrylamide gel and were then transferred electrophoretically onto nitrocellulose membranes. The transferred immunoglobulins were detected by rabbit antiserum to human kappa (kappa) or lambda (lambda) chain, swine antirabbit IgG, rabbit anti-peroxidase antibodies and peroxidase, together with a substrate solution comprising H2O2 and diaminobenzidine. Finally, the developed membranes were made transparent with Triton-x 114, scanned at 485 nm with a densitometer to obtain quantitation of charge distribution.
Collapse
Affiliation(s)
- S H Chui
- Department of Health Sciences, Hong Kong Polytechnic, Kowloon
| | | | | | | |
Collapse
|
36
|
|
37
|
Kabir S, Aebersold R, Daar AS. Identification of a novel 4 kDa immunoglobulin-A-binding peptide obtained by the limited proteolysis of jacalin. BIOCHIMICA ET BIOPHYSICA ACTA 1993; 1161:194-200. [PMID: 8431469 DOI: 10.1016/0167-4838(93)90213-b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Jacalin, an IgA-binding lectin from jackfruit (Artocarpus heterophyllus) seeds, was isolated by the passage of PBS extracts of seeds over an affinity matrix containing IgA-Sepharose-4B. It was further purified by HPLC. When analyzed by SDS-PAGE under both reducing and nonreducing conditions, the native jacalin was dissociated into two subunits of 12 and 15.4 kDa. Both the subunits could bind IgA. Peptide mapping performed with radioiodinated jacalin indicated that both the subunits were susceptible to proteolysis by Staphylococcus aureus V8 proteinase. One degradation product was a small peptide of 4 kDa. This small proteolytic fragment also bound IgA. The amino-termini of the two major IgA binding subunits, 12 and 15.4 kDa, were identical. The 4 kDa IgA-binding proteolytic fragment of jacalin had a different amino-terminal sequence, suggesting that the region of jacalin which binds IgA does not remain close to the amino-terminus of the peptide.
Collapse
Affiliation(s)
- S Kabir
- Department of Surgery, College of Medicine, Sultan Qaboos University, Al-Khod, Muscat, Oman
| | | | | |
Collapse
|
38
|
Favero J, Corbeau P, Nicolas M, Benkirane M, Travé G, Dixon JF, Aucouturier P, Rasheed S, Parker JW, Liautard JP. Inhibition of human immunodeficiency virus infection by the lectin jacalin and by a derived peptide showing a sequence similarity with gp120. Eur J Immunol 1993; 23:179-85. [PMID: 8419169 DOI: 10.1002/eji.1830230128] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Jacalin is a plant lectin known to specifically induce the proliferation of CD4+ T lymphocytes in human. We demonstrate here that jacalin completely blocks human immunodeficiency virus type 1 (HIV-1) in vitro infection of lymphoid cells. Jacalin does not bind the viral envelope glycoprotein gp120. Besides other T cell surface molecules, it interacts with CD4, the high-affinity receptor to HIV. Binding of jacalin to CD4 does not prevent gp120-CD4 interaction and does not inhibit virus binding and syncytia formation. The anti-HIV effect of the native lectin can be reproduced by its separated alpha-subunits. More importantly, we have defined in the alpha-chain of jacalin a 14-amino acid sequence which shows high similarities with a peptide of the second conserved domain of gp120. A synthetic peptide corresponding to this similar stretch also exerts a potent anti-HIV effect. This peptide is not mitogenic for peripheral blood mononuclear cells and does not inhibit anti-CD3-induced lymphocyte proliferation. These results make jacalin alpha chain-derived peptide a potentially valuable therapeutic agent for acquired immunodeficiency syndrome.
Collapse
Affiliation(s)
- J Favero
- INSERM U65, Université Montpellier II, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Irazoqui FJ, Zalazar FE, Chiabrando GA, Romero O, Vides MA. Differential reactivity of Agaricus bisporus lectin with human IgA subclasses in gel precipitation. J Immunol Methods 1992; 156:199-204. [PMID: 1474257 DOI: 10.1016/0022-1759(92)90026-p] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The interaction between purified Agaricus bisporus lectin and several human proteins was studied using the Ouchterlony double diffusion and immunoelectrophoresis techniques. Only one precipitation line was observed with normal human serum, normal human colostrum, IgA1 myeloma serum, both serum monoclonal and secretory IgA1 and monoclonal IgD. No reaction was observed with monoclonal and secretory IgA2, IgG, IgM, alpha 2 macroglobulin or pregnancy-associated alpha 2 glycoprotein. These results were confirmed by hemagglutination inhibition assays when IgA1, IgA2 and IgD were tested. On the basis of this reactivity, ABL could be a useful tool for distinguishing and isolating human IgA subclasses.
Collapse
Affiliation(s)
- F J Irazoqui
- Departamento de Bioquimica Clinica, Facultad de Ciencias Quimicas, Universidad Nacional de Córdoba, Argentina
| | | | | | | | | |
Collapse
|
40
|
Lien DN, Cesari IM, Bouty I, Bout D, Hoebeke J. Immunocapture assay for quantification of human IgA antibodies to parasite antigenic enzymes. Application with the alkaline phosphatase of Schistosoma mansoni. JOURNAL OF IMMUNOASSAY 1992; 13:521-36. [PMID: 1479025 DOI: 10.1080/15321819208019833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Conditions are described for using solid phase adsorbed jacalins in an immunocapture assay for IgA antibodies to the alkaline phosphatase of Schistosoma mansoni. Microtiter plates were activated with polylysine and jacalins were covalently adsorbed by means of glutaraldehyde. From three different jacalins, the one purified from seeds of Artocarpus tonkinensis showed the lowest non-specific adsorption and was used for further studies. Comparing solutions of bovine serum albumin, ovalbumin and Tween 20, it was shown that the latter was most successful in blocking non-specific adsorption. Low serum dilutions resulted in a less efficient IgA capture by the adsorbed jacalin than higher dilutions. Under optimal working conditions, a high correlation could be shown between the presence of specific anti-alkaline phosphatase antibodies of IgA isotype and IgG isotype.
Collapse
Affiliation(s)
- D N Lien
- Laboratory of Enzymology and Protein Chemistry, URA1334 CNRS, University François Rabelais, Tours
| | | | | | | | | |
Collapse
|
41
|
Ruffet E, Paquet N, Frutiger S, Hughes GJ, Jaton JC. Structural and electron-microscopic studies of jacalin from jackfruit (Artocarpus integrifolia) show that this lectin is a 65 kDa tetramer. Biochem J 1992; 286 ( Pt 1):131-4. [PMID: 1520261 PMCID: PMC1133028 DOI: 10.1042/bj2860131] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The 133-amino-acid sequences of the alpha-subunit of jacalin (a lectin from Artocarpus integrifolia) and of the slightly larger alpha'-subunit were determined. The alpha'- and alpha-subunits, in the approximate ratio of 1:3, were found to be virtually identical in their primary structures, except for one valine for isoleucine substitution at position 113. Although both alpha'- and alpha-chains were glycosylated, the extent of glycosylation in the alpha'-chain was much greater than that in the alpha-subunit. In the alpha'-polypeptide, all molecules contained an N-linked oligosaccharide at position 74 and some contained sugar at position 43. The alpha- and alpha'-subunits were found to be strongly non-covalently associated with three distinct beta-subunits containing 20 amino acids each. Electron-microscopic visualization of native jacalin disclosed a structure composed of four alpha-type subunits with a clear-cut 4-fold symmetry. Analytical-ultracentrifugation studies of jacalin revealed an average molecular mass of 65 kDa, a value compatible with a tetrameric structure of the alpha(alpha')-subunits. The recalculated number of sugar-binding sites per jacalin molecule, given a molecular mass of 65 kDa, would yield 0.8 sites per alpha(alpha')-promoter, i.e. about twice the value previously determined [Appukutan & Basu (1985) FEBS Lett. 180, 331-334; Ahmed & Chatterjee (1989) J. Biol. Chem. 264, 9365-9372].
Collapse
Affiliation(s)
- E Ruffet
- Department of Medical Biochemistry, University of Geneva, Switzerland
| | | | | | | | | |
Collapse
|
42
|
de Miranda-Santos IK, Delgado M, Bonini PV, Bunn-Moreno MM, Campos-Neto A. A crude extract of Artocarpus integrifolia contains two lectins with distinct biological activities. Immunol Lett 1992; 31:65-71. [PMID: 1372281 DOI: 10.1016/0165-2478(92)90012-d] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The crude extract derived from seeds of Artocarpus integrifolia (jack fruit) contains two fractions with different biological activities for lymphocytes. One fraction is the D-galactose-binding lectin, jacalin, obtained by affinity purification on a D-galactose agarose column. The other, which is a component of the flow-through fraction (FT), is responsible for the mitogenic activity observed with human PBMC and murine spleen cells. In contrast, jacalin inhibits FT- and ConA-induced proliferative activity of human PMBC and murine spleen cells. This inhibition is not due to toxicity, because: (1) jacalin induces significant levels of IL-3/GM-CSF but not of IL-2 and/or IL-4 in murine spleen cells; (2) jacalin does not affect the capacity of these cells to secrete IL-2 or IL-4 as supernatants obtained from spleen cells sequentially stimulated with jacalin and ConA contain IL-2 and/or IL-4 as well as IL-3/GM-CSF. The ligand for the mitogen contained in the FT fraction is D-mannose as determined by sugar inhibition studies.
Collapse
Affiliation(s)
- I K de Miranda-Santos
- Department of Immunology, Ribeirão Preto Medical School, University of São Paulo, Brazil
| | | | | | | | | |
Collapse
|
43
|
de Miranda-Santos IK, Mengel JO Júnior, Bunn-Moreno MM, Campos-Neto A. Activation of T and B cells by a crude extract of Artocarpus integrifolia is mediated by a lectin distinct from jacalin. J Immunol Methods 1991; 140:197-203. [PMID: 2066566 DOI: 10.1016/0022-1759(91)90371-l] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The biological activities previously described for a crude extract derived from seeds of Artocarpus integrifolia (jack fruit) are shown in the present work to be assigned to two distinct fractions present in this extract. One fraction is the D-galactose binding lectin, jacalin, obtained by affinity purification on a D-galactose Sepharose column. The other fraction is a D-mannose-binding protein which we propose to call 'Artocarpin'. As is well documented, jacalin binds to human IgA1 and is a useful tool for the purification of this immunoglobulin. We show here that the remaining biological activities consisting of the proliferative response of mouse spleen cells and human peripheral blood mononuclear cells and polyclonal activation of human and mouse B cells for the secretion of immunoglobulin are mediated by artocarpin. Artocarpin is unique in its capacity to induce polyclonal activation of B cells in the absence of proliferation. BALB/c nu/nu spleen cells failed to proliferate which indicates that this lectin is a T cell-dependent B cell polyclonal activator.
Collapse
Affiliation(s)
- I K de Miranda-Santos
- Departamento de Imunologia, Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo, Brazil
| | | | | | | |
Collapse
|
44
|
Hashim OH, Ng CL, Gendeh S, Nik Jaafar MI. IgA binding lectins isolated from distinct Artocarpus species demonstrate differential specificity. Mol Immunol 1991; 28:393-8. [PMID: 2062319 DOI: 10.1016/0161-5890(91)90152-a] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The discovery of jacalin, a group of lectins from jackfruit seeds (Artocarpus heterophyllus), has attracted considerable attention due to its numerous interesting immunological properties as well as its usefulness in the isolation of various serum proteins. We have further identified a similar lectin from the seeds of Champedak (Artocarpus integer) which we refer to as lectin-C and performed comparative studies with two types of jacalin isolated from different batches of the Malaysian jackfruit seeds (jacalin-M1 and jacalin-M2). The three purified lectins demonstrated equivalent apparent Mr of about 52,500, each of which comprised of a combination of two types of non-covalently-linked subunits with apparent Mr of approximately 13,300 and 16,000. The lectins demonstrated equal haemagglutinating activity against human erythrocytes of blood groups A, B, AB and O. Our data also demonstrated that lectin-C, jacalin-M1 and jacalin-M2 are similar by selectively precipitating human serum IgA1 and colostral sIgA but not IgA2, IgD, IgG and IgM. When immunoelectrophoresis was performed on normal human sera and reacted with the lectins, single precipitin arcs corresponding to IgA immunoprecipitates were detected with lectin-C and jacalin-MI. Jacalin-M2, however, exhibited two closely associated precipitin arcs. The binding of these lectins with IgA was pronouncedly inhibited in the presence of p-nitrophenyl-beta-D-galactopyranoside, 1-o-methyl-alpha-D-galactopyranoside, D-melibiose, N-acetyl-D-galactosamine and D-galactose. The data therefore provide evidence on the differential specificity of IgA binding lectins isolated from seeds of similar as well as distinct Artocarpus species.
Collapse
Affiliation(s)
- O H Hashim
- Department of Biochemistry, Faculty of Medicine, University of Malaya, Kuala Lumpur
| | | | | | | |
Collapse
|
45
|
Müller F, Frøland SS, Hvatum M, Radl J, Brandtzaeg P. Both IgA subclasses are reduced in parotid saliva from patients with AIDS. Clin Exp Immunol 1991; 83:203-9. [PMID: 1899629 PMCID: PMC1535252 DOI: 10.1111/j.1365-2249.1991.tb05615.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Secretory IgA (SIgA), the isotypes IgA1 and IgA2, and IgM were measured by ELISA in stimulated parotid saliva from patients with AIDS (n = 16), subjects with asymptomatic HIV infection (n = 28), and HIV-seronegative healthy controls (n = 19). SIgA was significantly reduced in the AIDS group (10.4 micrograms/ml) compared with the asymptomatic HIV-infected subjects (17.1 micrograms/ml) and the controls (23.0 micrograms/ml). This decrease comprised both IgA1 and IgA2 to a similar extent on a relative basis. The SIgA decrease in AIDS patients was in striking contrast to their serum IgA level, which was significantly increased (6.9 g/l) compared with the asymptomatic HIV-infected subjects (2.9 g/l) as well as the controls (2.8 g/l). Low parotid output of SIgA in patients with HIV infection was associated with low numbers of CD4+ lymphocytes in peripheral blood as well as the presence of oral infections. The parotid output of IgM was similar in all groups. A low level of SIgA in the external secretions of patients with AIDS may well contribute to their frequent mucosal infections of opportunistic microorganisms.
Collapse
Affiliation(s)
- F Müller
- Laboratory for Immunohistochemistry and Immunopathology (LIIPAT), University of Oslo, Rikshospitalet, Norway
| | | | | | | | | |
Collapse
|
46
|
Pineau N, Aucouturier P, Preud'homme JL, Hagiwara K, Kobayashi K. Structural and functional variability of jacalin. Mol Immunol 1991; 28:185-7. [PMID: 1901379 DOI: 10.1016/0161-5890(91)90104-r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- N Pineau
- Laboratory of Immunology and Immunopathology (CNRS URA 1172), CHUR La Milétrie, Poitiers, France
| | | | | | | | | |
Collapse
|
47
|
Affiliation(s)
- M A Kerr
- Department of Pathology, University of Dundee, Ninewells Hospital Medical School, U.K
| |
Collapse
|
48
|
Chui SH, Lam CW, Lewis WH, Lai KN. High-performance liquid affinity chromatography for the purification of immunoglobulin A from human serum using jacalin. J Chromatogr A 1990; 514:219-25. [PMID: 2258396 DOI: 10.1016/s0021-9673(01)89393-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A high-performance liquid affinity chromatographic method for the purification of serum immunoglobulin A (IgA) using a jacalin column is described. The automated procedure takes about 2 with minimal manipulation. The yields of the isolated IgA and of its IgG and IgM contamination were studied by enzyme-linked immunosorbent assay (ELISA) of 30 sera. Purity was assured by immunoelectrophoresis. The ratio of IgA1 to total IgA was unchanged after purification, as verified by ELISA. The results showed that greater than 90% IgA could be recovered with less than 0.5% total IgG and greater than 2.0% total IgM remaining in the fractions containing purified IgA.
Collapse
Affiliation(s)
- S H Chui
- Department of Health Sciences, Hong Kong Polytechnic, Kowloon
| | | | | | | |
Collapse
|
49
|
Oppenheim JD, Amin AR, Thorbecke GJ. A rapid one step purification procedure for murine IgD based on the specific affinity of Bandeiraea (Griffonia) simplicifolia-1 for N-linked carbohydrates on IgD. J Immunol Methods 1990; 130:243-50. [PMID: 2115553 DOI: 10.1016/0022-1759(90)90054-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The alpha-D-galactopyranosyl binding lectin from the seeds of Bandeiraea simplicifolia (a.k.a. Griffonia simplicifolia) termed BS-I, strongly reacts with murine IgD and with no other protein in ascites including all other classes of immunoglobulins as determined by immunoprecipitation, hemagglutination inhibition and affinity binding. Based on this finding, murine IgD could be rapidly purified directly from whole ascitic fluid by passage over affinity beads of BS-I linked to Sepharose 4B and subsequent elution by a buffer containing 0.1 M D-galactose. The sugar eluted product is 95-99% pure as determined by SDS-PAGE and represents 90-95% of the total IgD in the initial ascites by ELISA assay. Both monomeric and dimeric murine IgD may be purified by this procedure. Human IgD is unreactive with this lectin. Treatment of purified IgD with endoglycosidases that remove either O- or N-linked glycosides indicates that BS-I binds to IgD only via N-linked carbohydrate chains.
Collapse
Affiliation(s)
- J D Oppenheim
- Department of Microbiology, New York University Medical Center, NY 10016
| | | | | |
Collapse
|
50
|
|