FN Archimer Export Format PT J TI Expression of immune-related genes in the oyster Crassostrea gigas during ontogenesis BT AF TIRAPE, Ana BACQUE, Coralie BRIZARD, Raphael VANDENBULCKE, Franck BOULO, Viviane AS 1:1;2:1;3:2;4:3;5:2; FF 1:;2:;3:PDG-DOP-DCN-AGSAE-LGP;4:;5:PDG-DOP-DCM-BOME-LALR; C1 Univ Montpellier 2, UMR5171, IFREMER, CNRS, F-34095 Montpellier 5, France. IFREMER, Lab Genet & Pathol, F-17390 La Tremblade, France. Univ Lille 1, Lab Ecol Numer & Ecotoxicol, EA 3570, F-59655 Villeneuve Dascq, France. C2 UNIV MONTPELLIER, FRANCE IFREMER, FRANCE UNIV LILLE, FRANCE SI MONTPELLIER LA TREMBLADE SE PDG-DOP-DCM-BOME-LALR-GPIA PDG-DOP-DCN-AGSAE-LGP PDG-DOP-DCM-BOME-LALR IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 3.155 TC 62 UR https://archimer.ifremer.fr/doc/2007/publication-2612.pdf LA English DT Article DE ;Rel/NF kappa B pathway;Cell proliferation;Hematopoiesis;Mollusk immunity;Hemocytes;Bivalve mollusk AB The work presented here reports the expression of immune-related genes during ontogenesis in the oyster Crassostrea gigar. Expression patterns of 18 selected genes showed that RNAs detected in oocytes and 2-4 cell embryos are of maternal origin and that gene transcription starts early after fertilization. The expression patterns of 4 genes (Cg-timp, Cg-tal, Cg-EcSOD and Drac3) suggested that hemocytes appear in the gastrula-trochophore stages. The localization of Cg-tal expression suggested that hematopoietic cells were derived from vessels and/or artery endothelia cells. Moreover, a bacterial challenge affected the level of expression of genes. Indeed, a change in expression levels was observed for Cg-LBP/BPI, Cg-timp, Drac3 and Cg-MyD88 genes in larval stages upon exposure to non-pathogenic bacteria. In early juveniles, a modulation was also observed for Cg-LBP/BPI, Cg-timp, Cg-MyD88 and for Cg-tal, according to the concentration of bacteria. Altogether, the results showed that studying the appearance of immunocompetent cells through their ability to express immune-related genes is a tool to gain insight the ontogenesis of the oyster immune system. (C) 2007 Elsevier Ltd. All rights reserved. PY 2007 PD JUN SO Developmental & Comparative Immunology SN 0145-305X PU Elsevier VL 31 IS 9 UT 000247553800001 BP 859 EP 873 DI 10.1016/j.dci.2007.01.005 ID 2612 ER EF