First evidence of the activation of Cg-timp, an immune response component of pacific oysters, through a damage-associated molecular pattern pathway

In a previous work, we characterized a Crassostrea gigas cDNA ( Cg-timp) encoding a protein which presents all the features of vertebrate tissue inhibitor of metalloproteinase (TIMP). The expression pattern of this gene led us to propose that Cg-timp is an important factor in oyster wound healing an...

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Veröffentlicht in:Developmental & Comparative Immunology 2007, Vol.31 (1), p.1-11
Hauptverfasser: Montagnani, C., Avarre, J.C., de Lorgeril, J., Quiquand, M., Boulo, V., Escoubas, J.M.
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container_title Developmental & Comparative Immunology
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creator Montagnani, C.
Avarre, J.C.
de Lorgeril, J.
Quiquand, M.
Boulo, V.
Escoubas, J.M.
description In a previous work, we characterized a Crassostrea gigas cDNA ( Cg-timp) encoding a protein which presents all the features of vertebrate tissue inhibitor of metalloproteinase (TIMP). The expression pattern of this gene led us to propose that Cg-timp is an important factor in oyster wound healing and defense mechanisms. Here we describe the analysis of Cg-timp expression in oysters challenged by live or dead bacteria as well as by bacterial secretory/excretory products and metalloproteinase. Surprisingly, bacterial secretory/excretory products activate Cg-timp gene expression whereas heat-inactivated ones do not. To address the question of the signal transduction pathway involved in Cg-timp gene activation, we isolated and sequenced Cg-timp promoter and upstream region. A 1-kb genomic DNA fragment flanking the 5′-end of the gene contains several regulatory elements and notably three NF- κB binding sites. The potential involvement of these motifs in Cg-timp gene regulation is discussed.
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subjects Animals
Bacillus
Base Sequence
Biodiversity
Crassostrea - genetics
Crassostrea - immunology
Crassostrea gigas
Damage-associated molecular pattern
Gene Expression Regulation - genetics
Gene Expression Regulation - immunology
Life Sciences
Marine
Metalloproteinase
Molecular Sequence Data
Mollusk immunity
Oyster
Populations and Evolution
Signal Transduction
Tissue inhibitor of metalloproteinase
Tissue Inhibitor of Metalloproteinases - genetics
Tissue Inhibitor of Metalloproteinases - immunology
Tissue Inhibitor of Metalloproteinases - metabolism
Transcriptional Activation
Vibrio - immunology
Wound Healing - genetics
Wound Healing - immunology
title First evidence of the activation of Cg-timp, an immune response component of pacific oysters, through a damage-associated molecular pattern pathway
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