A protocol for studying the kinetics of RNA within cultured cells: application to ribosomal RNA
| Autor: | Nathalie Lalun, Hélène Bobichon, Nicolas Thelen, Françoise Lamaye, Dominique Ploton, Marc Thiry, Aurore Chatron-Colliet |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Transcriptional Activation
Confocal Cell Cell Culture Techniques RNA Epithelial Cells Uridine Triphosphate Biology Ribosomal RNA General Biochemistry Genetics and Molecular Biology Cell biology chemistry.chemical_compound Cell nucleus Kinetics medicine.anatomical_structure chemistry Cytoplasm RNA Ribosomal medicine Dactinomycin Humans Nucleus Uridine triphosphate Alpha-Amanitin HeLa Cells |
| Zdroj: | Nature protocols. 3(12) |
| ISSN: | 1750-2799 |
| Popis: | This protocol describes a nonisotopic method for high-resolution investigation of the kinetics of RNA within the cell. This involves the incorporation of bromouridine-5'-triphosphate into RNA of living cells by lipofection followed by immunocytological detection of BrRNAs. The use of the same antibody identified either with fluorescence or with gold particles revealed the three-dimensional organization of sites containing labeled RNAs or their precise localization by using confocal and ultrastructural microscopy, respectively. Comparison of three-dimensional reconstruction obtained from the series of optical sections and ultrathin sections was extremely fruitful to describe topological and spatial dynamics of RNAs from their synthesis site inside the nucleus to the cytoplasm. Combined with immunolocalization of proteins involved in different nuclear activities and with highly resolved three-dimensional visualizations of the labelings, this method should also provide a significant contribution to our understanding of the functional, volumic organization of the cell nucleus. The entire protocol can be completed in approximately 10 d. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|