title: Large-scale expression screening by automated whole-mount in situ hybridization.
abstract: Gene expression profiling is an important component of functional genomics. We present a time and cost efficient high-throughput whole-mount in situ technique to perform a large-scale gene expression analysis in medaka fish (Oryzias latipes) embryos. Medaka is a model system ideally suited for the study of molecular genetics of vertebrate development. Random cDNA clones from an arrayed stage 20 medaka plasmid library were analyzed by whole-mount in situ hybridization on embryos of three representative stages of medaka development. cDNA inserts were colony PCR amplified in a 384-format. The PCR products were used to generate over 2000 antisense RNA digoxigenin probes in a high-throughput process. Whole-mount in situ hybridization was carried out in a robot and a broad range of expression patterns was observed. Partial cDNA sequences and expression patterns were documented with BLAST results, cluster analysis, images and descriptions, respectively; collectively this information was entered into a web-based database, "MEPD" (http://www.embl-heidelberg.de/mepd/), that is publicly accessible.
authors.affiliation: Developmental Biology Programme, European Molecular Biology Laboratory, Meyerhofstrasse 1, D-69012 Heidelberg, Germany.
authors.forename: Rebecca
authors.initials: R
authors.lastname: Quiring
authors.forename: Beate
authors.initials: B
authors.lastname: Wittbrodt
authors.forename: Thorsten
authors.initials: T
authors.lastname: Henrich
authors.forename: Mirana
authors.initials: M
authors.lastname: Ramialison
authors.forename: Carola
authors.initials: C
authors.lastname: Burgtorf
authors.forename: Hans
authors.initials: H
authors.lastname: Lehrach
authors.forename: Joachim
authors.initials: J
authors.lastname: Wittbrodt
mesh_terms: D000818:Animals; D015342:DNA Probes; D015870:Gene Expression / Q000502:physiology*; D020869:Gene Expression Profiling / Q000379:methods*; D017403:In Situ Hybridization / Q000379:methods*; D009990:Oryzias / Q000196:embryology / Q000235:genetics* / Q000502:physiology
chemical_list: D015342:DNA Probes