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© Research
Publication : Genome research

A subtracted cDNA library from the zebrafish (Danio rerio) embryonic inner ear

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Genome research - 01 Jun 2002

Coimbra RS, Weil D, Brottier P, Blanchard S, Levi M, Hardelin JP, Weissenbach J, Petit C

Link to Pubmed [PMID] – 12045154

Genome Res. 2002 Jun;12(6):1007-11

A database was built that consists of 4694 sequence contigs of approximately 18,000 reads of cDNAs isolated from the microdissected otocysts of zebrafish embryos at 20-30 hour postfertilization, following subtraction with a pool of liver cDNAs from adult fish. These sequences were compared with those of public databanks. Significant similarity were recorded and organized in a relational database at http://www.genoscope.cns.fr/zie. A first group of 2067 sequences correspond to 1428 known zebrafish genes or ESTs present in the Danio rerio section of UniGene. A second group of 302 sequences encode putative proteins that showed significant similarity (50%-100%) with 302 nonzebrafish proteins in the nr databank, a public databank containing an exhaustive nonredundant collection of protein sequences from different species (ftp://ftp.ncbi.nlm.nih.gov/blast/db/nr). The remaining 2325 (49.5%) sequence contigs or singletons showed no significant similarity with sequences available in public databanks. Several genes known to be expressed in the developing inner ear were represented in the present database, in particular genes involved in hair cell differentiation or innervation The occurrence of these genes validates the outcome of this study as the first collection of ESTs preferentially expressed in the zebrafish inner ear during the period of hair cell differentiation and neuroblast delamination from the otic vesicle epithelium. Novel zebrafish genes also involved in these processes are thus likely to be represented among the sequences obtained herein, for which no homology was found in the D. rerio section of UniGene. [The sequence data from this study have been submitted to EMBL under accession nos. AL714032-AL731531].

http://www.ncbi.nlm.nih.gov/pubmed/12045154