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Science 26 June 1992:
Vol. 256. no. 5065, pp. 1812 - 1815
DOI: 10.1126/science.1615326

Articles

Science, Vol 256, Issue 5065, 1812-1815
Copyright © 1992 by American Association for the Advancement of Science


articles

Stage-specific adhesion of Leishmania promastigotes to the sandfly midgut

PF Pimenta, SJ Turco, MJ McConville, PG Lawyer, PV Perkins, and DL Sacks

Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.

Although leishmaniasis is transmitted to humans almost exclusively by the bite of infected phlebotomine sandflies, little is known about the molecules controlling the survival and development of Leishmania parasites in their insect vectors. Adhesion of Leishmania promastigotes to the midgut epithelial cells of the sandfly was found to be an inherent property of noninfective-stage promastigotes, which was lost during their transformation to metacyclic forms, thus permitting the selective release of infective-stage parasites for subsequent transmission by bite. Midgut attachment and release was found to be controlled by specific developmental modifications in terminally exposed saccharides on lipophosphoglycan, the major surface molecule on Leishmania promastigotes.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
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Sugar Nucleotide Pools of Trypanosoma brucei, Trypanosoma cruzi, and Leishmania major.
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Insight into a Conserved Lifestyle: Protein-Carbohydrate Adhesion Strategies of Vector-Borne Pathogens.
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Identification of Genes Encoding Arabinosyltransferases (SCA) Mediating Developmental Modifications of Lipophosphoglycan Required for Sand Fly Transmission of Leishmania major.
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Functional Identification of Galactosyltransferases (SCGs) Required for Species-specific Modifications of the Lipophosphoglycan Adhesin Controlling Leishmania major-Sand Fly Interactions.
D. E. Dobson, L. D. Scholtes, K. E. Valdez, D. R. Sullivan, B. J. Mengeling, S. Cilmi, S. J. Turco, and S. M. Beverley (2003)
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Specific Recognition and Cleavage of Galectin-3 by Leishmania major through Species-specific Polygalactose Epitope.
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The role of phosphoglycans in Leishmania-sand fly interactions.
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The structure, biosynthesis and functions of glycosylphosphatidylinositol anchors, and the contributions of trypanosome research.
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Stage-specific Proteophosphoglycan from Leishmania mexicana Amastigotes. STRUCTURAL CHARACTERIZATION OF NOVEL MONO-, DI-, AND TRIPHOSPHORYLATED PHOSPHODIESTER-LINKED OLIGOSACCHARIDES.
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Glycoprotein 46 mRNA Abundance Is Post-transcriptionally Regulated during Development of Leishmania chagasi Promastigotes to an Infectious Form.
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Inhibition of Phagolysosomal Biogenesis by the Leishmania Lipophosphoglycan.
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Deficiency in beta 1,3-Galactosyltransferase of a Leishmania major Lipophosphoglycan Mutant Adversely Influences the Leishmania-Sand Fly Interaction.
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J. Cell Sci. 107, 2471-2482
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Gene deletion suggests a role for Trypanosoma cruzi surface glycoprotein GP72 in the insect and mammalian stages of the life cycle.
A. de Jesus, R Cooper, M Espinosa, J. Gomes, E. Garcia, S Paul, and G. Cross (1993)
J. Cell Sci. 106, 1023-1033
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Phosphoglycan Repeat-deficient Leishmania mexicana Parasites Remain Infectious to Macrophages and Mice.
T. Ilg, M. Demar, and D. Harbecke (2001)
J. Biol. Chem. 276, 4988-4997
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