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Gene expression analysis of clams Ruditapes philippinarum and Ruditapes decussatus following bacterial infection yields molecular insights into pathogen resistance and immunity

AuthorsMoreira, Rebeca ; Balseiro, P. ; Romero Jódar, Alejandro ; Dios, S. ; Posada, D.; Novoa, Beatriz ; Figueras Huerta, Antonio
KeywordsRuditapes decussatus
Ruditapes philippinarum
Vibrio alginolyticus
Immune-related genes
Gene expression
Issue Date2012
CitationDevelopmental and Comparative Immunology 36(1): 140-149 (2012)
AbstractThe carpet shell clam (Ruditapes decussatus) and Manila clam (Ruditapes philippinarum), which are cultured bivalve species with important commercial value, are affected by diseases that result in large economic losses. Because the molecular mechanism of the immune response of bivalves, especially clams, is scarce and fragmentary, we have examined all Expressed Sequence Tags (EST) resources available in public databases for these two species in order to increase our knowledge on genes related with the immune function in these animals. After automatic annotation and classification of the 3784 not-annotated ESTs of R. decussatus and 4607 of R. philippinarum found in GenBank, 424 ESTs of R. decussatus and 464 of R. philippinarum were found to be putatively involved in immune response. These were carefully reviewed and reannotated. As a result, 13 immune-related ESTs were selected and studied to compare the immune response of R. decussatus and R. philippinarum following a Vibrio alginolyticus challenge. Quantitative PCR was performed, and the expression of each EST was determined. The results showed that, in R. philippinarum, the immune response seems to be faster than that in R. decussatus. Additionally, expression of NF-κB activating genes in R. decussatus did not seem to be sufficient to promote an immune response after Vibrio infection. R. philippinarum, however, was able to trigger and efficiently regulate the transcriptional activity of NF-κB, even when low expression values were reported
Description10 páginas, 4 figuras, 4 tablas
Publisher version (URL)http://dx.doi.org/10.1016/j.dci.2011.06.012
Appears in Collections:(IIM) Artículos
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