EST-based Analysis of Gene Expression in the Porcine Brain

(整期优先)网络出版时间:2004-04-14
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Sincepigisanimportantlivestockspeciesworldwide,itsgeneexpressionhasbeeninvestigatedintensively,butrarelyinbrain.Inordertostudygeneexpressionprofilesinthepigcentralnervoussystem,wesequencedandanalyzed43,122highquality5′endexpressedsequencetags(ESTs)fromporcinecerebellum,cortexcerebrum,andbrainstemcDNAlibraries,involvingseveraldifferentprenatalandpostnataldevelopmentalstages.TheinitialESTswereassembledinto16,101clustersandcomparedtoproteinandnucleicaciddatabasesinGenBank.Ofthesesequences,30.6%clustersmatchedproteindatabasesandrepresentedfunctionknownsequences;75.1%hadsignificanthitstonucleicaciddatabasesandpartialrepresentedknownfunction;73.3%matchedknownporcineESTs;and21.5%hadnomatchestoanyknownsequencesinGenBank.WeusedthecategoriesdefinedbytheGeneOntologytosurveygeneexpressionintheporcinebrain.