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Synthetic glycovaccine protects against the bite of Leishmania-infected sand flies

Rogers, Matthew E., Sizova, O. V., Ferguson, M. A. J., Nikolaev, A. V. and Bates, Paul (2006) 'Synthetic glycovaccine protects against the bite of Leishmania-infected sand flies'. Journal of Infectious Disease, Vol 194, Issue 4, pp. 512-518.

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Abstract

Leishmaniasis is a vectorborne disease transmitted to human and other mammalian hosts by sand fly bite. In the present study, we show that immunization with Leishmania mexicana promastigote secretory gel (PSG) or with a chemically defined synthetic glycovaccine containing the glycans found in L. mexicana PSG can provide significant protection against challenge by the bite of infected sand flies. Only the glycan from L. mexicana was protective; those from other species did not protect against L. mexicana infection. Furthermore, neither PSG nor the glycovaccine protected against artificial needle challenge, which is traditionally used in antileishmanial vaccine development. Conversely, an antigen preparation that was effective against needle challenge offered no protection against sand fly bite. These findings provide a new target for Leishmania vaccine development and demonstrate the critical role that the vector plays in the evaluation of candidate vaccines for leishmaniasis and other vectorborne diseases.

Item Type: Article
Subjects: QW Microbiology and Immunology > Immunotherapy and Hypersensitivity > QW 805 Vaccines. Antitoxins. Toxoids
QX Parasitology > Protozoa > QX 70 Mastigophora. (e.g., Giardia. Trichomonas. Trypanosoma. Leishmania)
WR Dermatology > Parasitic Skin Diseases > WR 350 Tropical diseases of the skin. Mucocutaneous leishmaniasis. Leishmaniasis
Digital Object Identifer (DOI): https://doi.org/10.1086/505584
Depositing User: Ms Julia Martin
Date Deposited: 03 Mar 2011 14:28
Last Modified: 07 Dec 2018 09:52
URI: https://archive.lstmed.ac.uk/id/eprint/1583

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