Immune gene discovery by expressed sequence tags generated from hemocytes of the bacteria-challenged oyster, Crassostrea gigas

An expressed sequence tag program was undertaken to isolate genes involved in defense mechanisms of the Pacific oyster, Crassostrea gigas. Putative function could be assigned to 54% of the 1142 sequenced cDNAs. We built a public database where all EST information are accessible through numerous sear...

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Veröffentlicht in:Gene 2003-01, Vol.303 (C), p.139-145
Hauptverfasser: Gueguen, Yannick, Cadoret, Jean Paul, Flament, Didier, Barreau-Roumiguière, Catherine, Girardot, Anne Laure, Garnier, Julien, Hoareau, Alixe, Bachère, Evelyne, Escoubas, Jean Michel
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container_end_page 145
container_issue C
container_start_page 139
container_title Gene
container_volume 303
creator Gueguen, Yannick
Cadoret, Jean Paul
Flament, Didier
Barreau-Roumiguière, Catherine
Girardot, Anne Laure
Garnier, Julien
Hoareau, Alixe
Bachère, Evelyne
Escoubas, Jean Michel
description An expressed sequence tag program was undertaken to isolate genes involved in defense mechanisms of the Pacific oyster, Crassostrea gigas. Putative function could be assigned to 54% of the 1142 sequenced cDNAs. We built a public database where all EST information are accessible through numerous search profiles (http://www.ifremer.fr/GigasBase). Based on sequence similarities we identified 20 genes that may be implicated in immune function. We investigated the expression of four of these genes during bacterial challenge of oysters. Three of them were induced in response to challenge lending support to their involvement in oyster immunity. Moreover, four other genes were highly homologous to components of the NF-kappa B signaling pathway which is involved in innate immune response in Drosophila and mammals. Altogether, our results open a new way to investigate the immune response in mollusks.
doi_str_mv 10.1016/S0378-1119(02)01149-6
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subjects Animals
Bacteria - immunology
Blood Cells - cytology
Cell Adhesion Molecules - genetics
Cell Division - genetics
Crassostrea gigas
DNA, Complementary - chemistry
DNA, Complementary - genetics
Endopeptidases - genetics
Expressed Sequence Tags
Ferritins - genetics
Gene Expression Regulation - immunology
Hemocytes - metabolism
Immunity, Innate - genetics
Life Sciences
Marine
Metallothionein - genetics
Ostreidae - genetics
Ostreidae - immunology
Sequence Analysis, DNA
Tissue Inhibitor of Metalloproteinases - genetics
title Immune gene discovery by expressed sequence tags generated from hemocytes of the bacteria-challenged oyster, Crassostrea gigas
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