Differences between Naegleria fowleri and Naegleria gruberi in expression of mannose and fucose glycoconjugates. 2010

Isaac Cervantes-Sandoval, and José Jesús Serrano-Luna, and Judith Pacheco-Yépez, and Angélica Silva-Olivares, and Víctor Tsutsumi, and Mineko Shibayama
Department of Infectomic and Molecular Pathogenesis, Center for Research and Advanced Studies, National Polytechnic Institute, Av. IPN 2508, Mexico City 07360, Mexico.

Naegleria fowleri is the etiologic agent of primary amoebic meningoencephalitis, a rapidly fatal parasitic disease of humans. The adherence of Naegleria trophozoites to the host cell is one of the most important steps in the establishment and invasiveness of this infectious disease. Currently, little is known about the surface molecules that may participate in the interaction of N. fowleri with their target cells. In the present study, we investigated the composition of glycoconjugates present on the surface of trophozoites of the pathogenic N. fowleri and the nonpathogenic Naegleria gruberi. With the use of biotinylated lectins in western blot and flow cytometric analysis, we showed that N. fowleri trophozoites present high levels of surface glycoconjugates that contain alpha-D-mannose, alpha-D-glucose, and terminal alpha-L-fucose residues. A significant difference in the expression of these glycoconjugates was observed between N. fowleri and the nonpathogenic N. gruberi. Furthermore, we suggest that glycoconjugates that contain D-mannose and L-fucose residues participate in the adhesion of N. fowleri and subsequent damage to MDCK cells.

UI MeSH Term Description Entries
D008358 Mannose A hexose or fermentable monosaccharide and isomer of glucose from manna, the ash Fraxinus ornus and related plants. (From Grant & Hackh's Chemical Dictionary, 5th ed & Random House Unabridged Dictionary, 2d ed) D-Mannose,Mannopyranose,Mannopyranoside,D Mannose
D009253 Naegleria A free-living soil amoeba pathogenic to humans and animals. It occurs also in water and sewage. The most commonly found species in man is NAEGLERIA FOWLERI which is the pathogen for primary amebic meningoencephalitis in primates. Naeglerias
D002448 Cell Adhesion Adherence of cells to surfaces or to other cells. Adhesion, Cell,Adhesions, Cell,Cell Adhesions
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog
D005434 Flow Cytometry Technique using an instrument system for making, processing, and displaying one or more measurements on individual cells obtained from a cell suspension. Cells are usually stained with one or more fluorescent dyes specific to cell components of interest, e.g., DNA, and fluorescence of each cell is measured as it rapidly transverses the excitation beam (laser or mercury arc lamp). Fluorescence provides a quantitative measure of various biochemical and biophysical properties of the cell, as well as a basis for cell sorting. Other measurable optical parameters include light absorption and light scattering, the latter being applicable to the measurement of cell size, shape, density, granularity, and stain uptake. Cytofluorometry, Flow,Cytometry, Flow,Flow Microfluorimetry,Fluorescence-Activated Cell Sorting,Microfluorometry, Flow,Cell Sorting, Fluorescence-Activated,Cell Sortings, Fluorescence-Activated,Cytofluorometries, Flow,Cytometries, Flow,Flow Cytofluorometries,Flow Cytofluorometry,Flow Cytometries,Flow Microfluorometries,Flow Microfluorometry,Fluorescence Activated Cell Sorting,Fluorescence-Activated Cell Sortings,Microfluorimetry, Flow,Microfluorometries, Flow,Sorting, Fluorescence-Activated Cell,Sortings, Fluorescence-Activated Cell
D005643 Fucose A six-member ring deoxysugar with the chemical formula C6H12O5. It lacks a hydroxyl group on the carbon at position 6 of the molecule. Deoxygalactose,alpha-Fucose,alpha Fucose
D006001 Glycoconjugates Carbohydrates covalently linked to a nonsugar moiety (lipids or proteins). The major glycoconjugates are glycoproteins, glycopeptides, peptidoglycans, glycolipids, and lipopolysaccharides. (From Biochemical Nomenclature and Related Documents, 2d ed; From Principles of Biochemistry, 2d ed) Glycoconjugate
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013194 Staining and Labeling The marking of biological material with a dye or other reagent for the purpose of identifying and quantitating components of tissues, cells or their extracts. Histological Labeling,Staining,Histological Labelings,Labeling and Staining,Labeling, Histological,Labelings, Histological,Stainings

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