Sep 9, 2014

Systematic imaging reveals features and changing localization of mRNAs in Drosophila development

bioRxiv
Helena JamborPavel Tomancak

Abstract

mRNA localization is critical for eukaryotic cells and affects numerous transcripts, yet how cells regulate distribution of many mRNAs to their subcellular destinations is still unknown. We combined transcriptomics and systematic imaging to determine tissue-specific expression and subcellular distribution of 5862 mRNAs during Drosophila oogenesis. mRNA localization is widespread in the ovary, depends on the microtubule cytoskeleton and the mRNAs enriched at the posterior cortex share common localization machinery. Localized mRNAs, in particular the posterior class, have distinct gene features and differ in expression level, 3’UTR length and sequence conservation from unlocalized mRNAs. Using cross-tissue comparison we revealed that the localization status of mRNAs differs between epithelial, germline and embryonic cell types and also changes within one cell, the oocyte, over time. This dataset enables the transition from deep mechanistic dissection of singular mRNA localization events towards global understanding of how mRNAs transcribed in the nucleus distribute in cells.

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Mentioned in this Paper

Embryo
Establishment and Maintenance of Localization
Cortex Bone Disorders
Untranslated Regions
Adrenal Cortex Diseases
SLC14A2 gene
Genes
UTS2R gene
Drosophila
Cell Nucleus

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