title: Fixed and live visualization of RNAs in Drosophila oocytes and embryos.
abstract: The ability to visualize RNA in situ is essential to dissect mechanisms for the temporal and spatial regulation of gene expression that drives development. Although considerable attention has been focused on transcriptional control, studies in model organisms like Drosophila have highlighted the importance of post-transcriptional mechanisms - most notably intracellular mRNA localization - in the formation and patterning of the body axes, specification of cell fates, and polarized cell functions. Our understanding of both types of regulation has been greatly advanced by technological innovations that enable a combination of highly quantitative and dynamic analysis of RNA. This review presents two methods, single molecule fluorescence in situ hybridization for high resolution quantitative RNA detection in fixed Drosophila oocytes and embryos and genetically encoded fluorescent RNA labeling for detection in live cells.
authors.affiliation: Department of Molecular Biology, Princeton University, Princeton, NJ 08544, United States.
authors.forename: Evan K
authors.initials: EK
authors.lastname: Abbaszadeh
authors.affiliation: Department of Molecular Biology, Princeton University, Princeton, NJ 08544, United States. Electronic address: gavis@princeton.edu.
authors.forename: Elizabeth R
authors.initials: ER
authors.lastname: Gavis
mesh_terms: D000818:Animals; D019521:Body Patterning / Q000235:genetics; D004331:Drosophila melanogaster / Q000235:genetics / Q000254:growth & development / Q000378:metabolism / Q000648:ultrastructure*; D004625:Embryo, Nonmammalian / Q000378:metabolism / Q000648:ultrastructure*; D005260:Female; D005404:Fixatives / Q000737:chemistry; D018507:Gene Expression Regulation, Developmental; D017404:In Situ Hybridization, Fluorescence / Q000379:methods; D009865:Oocytes / Q000378:metabolism / Q000648:ultrastructure*; D012333:RNA, Messenger / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D000072760:Single Molecule Imaging / Q000379:methods*; D013194:Staining and Labeling / Q000379:methods*; D016707:Tissue Fixation / Q000379:methods
chemical_list: D005404:Fixatives; D012333:RNA, Messenger; D011993:Recombinant Fusion Proteins
keywords: In vivo RNA labeling; Intracellular mRNA localization; MS2/MCP; PP7/PCP; mRNA expression patterns; smFISH
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