Unknown,Transcriptomics,Genomics,Proteomics

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RIP-Chip of endogenous Staufen and GFP-tagged Staufen from 0-3 hour Drosophila embryos


ABSTRACT: Staufen-associated mRNAs were identified in early Drosophila embryos by RNA-co-immunoprecipitation followed by microarray analysis (RIP-Chip), using two complementary approaches: RIP-Chip from wild-type embryos using a synthetic anti-Staufen antibody, and RIP-Chip from transgenic GFP-Staufen-expressing embryos using an anti-GFP antibody. Genome-wide transcript expression in whole embryos was also assessed for the wild-type and GFP-Staufen lines. There are 18 samples in total. These include 3 replicates each of 1) gene expression profiling from total mRNA isolated from wild-type 0-3 hour embryos, 2) synthetic anti-Staufen antibody RNA co-immunoprecipitations of endogenous Staufen from wild-type 0-3 hour embryos, 3) control synthetic antibody RNA co-immunoprecipitations from wild-type 0-3 hour embryos, 4) gene expression profiling from total mRNA isolated from transgenic GFP-Staufen expressing 0-3 hour embryos, 5) anti-GFP RNA co-immunoprecipitations of GFP-Staufen from transgenic GFP-Staufen expressing 0-3 hour embryos, 6) anti-FLAG control RNA co-immunoprecipitations from transgenic GFP-Staufen expressing 0-3 hour embryos.

ORGANISM(S): Drosophila melanogaster

SUBMITTER: Howard Lipshitz 

PROVIDER: E-GEOD-43418 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Genome-wide analysis of Staufen-associated mRNAs identifies secondary structures that confer target specificity.

Laver John D JD   Li Xiao X   Ancevicius Kristin K   Westwood J Timothy JT   Smibert Craig A CA   Morris Quaid D QD   Lipshitz Howard D HD  

Nucleic acids research 20130813 20


Despite studies that have investigated the interactions of double-stranded RNA-binding proteins like Staufen with RNA in vitro, how they achieve target specificity in vivo remains uncertain. We performed RNA co-immunoprecipitations followed by microarray analysis to identify Staufen-associated mRNAs in early Drosophila embryos. Analysis of the localization and functions of these transcripts revealed a number of potentially novel roles for Staufen. Using computational methods, we identified two s  ...[more]

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