PMID- 20974745 OWN - NLM STAT- MEDLINE DCOM- 20101213 LR - 20230525 IS - 1469-9001 (Electronic) IS - 1355-8382 (Print) IS - 1355-8382 (Linking) VI - 16 IP - 12 DP - 2010 Dec TI - RiboSys, a high-resolution, quantitative approach to measure the in vivo kinetics of pre-mRNA splicing and 3'-end processing in Saccharomyces cerevisiae. PG - 2570-80 LID - 10.1261/rna.2162610 [doi] AB - We describe methods for obtaining a quantitative description of RNA processing at high resolution in budding yeast. As a model gene expression system, we constructed tetON (for induction studies) and tetOFF (for repression, derepression, and RNA degradation studies) yeast strains with a series of reporter genes integrated in the genome under the control of a tetO7 promoter. Reverse transcription and quantitative real-time-PCR (RT-qPCR) methods were adapted to allow the determination of mRNA abundance as the average number of copies per cell in a population. Fluorescence in situ hybridization (FISH) measurements of transcript numbers in individual cells validated the RT-qPCR approach for the average copy-number determination despite the broad distribution of transcript levels within a population of cells. In addition, RT-qPCR was used to distinguish the products of the different steps in splicing of the reporter transcripts, and methods were developed to map and quantify 3'-end cleavage and polyadenylation. This system permits pre-mRNA production, splicing, 3'-end maturation and degradation to be quantitatively monitored with unprecedented kinetic detail, suitable for mathematical modeling. Using this approach, we demonstrate that reporter transcripts are spliced prior to their 3'-end cleavage and polyadenylation, that is, cotranscriptionally. FAU - Alexander, Ross D AU - Alexander RD AD - Wellcome Trust Centre for Cell Biology, University of Edinburgh, King's Buildings, Edinburgh EH9 3JR, United Kingdom. FAU - Barrass, J David AU - Barrass JD FAU - Dichtl, Beatriz AU - Dichtl B FAU - Kos, Martin AU - Kos M FAU - Obtulowicz, Tomasz AU - Obtulowicz T FAU - Robert, Marie-Cecile AU - Robert MC FAU - Koper, Michal AU - Koper M FAU - Karkusiewicz, Iwona AU - Karkusiewicz I FAU - Mariconti, Luisa AU - Mariconti L FAU - Tollervey, David AU - Tollervey D FAU - Dichtl, Bernhard AU - Dichtl B FAU - Kufel, Joanna AU - Kufel J FAU - Bertrand, Edouard AU - Bertrand E FAU - Beggs, Jean D AU - Beggs JD LA - eng GR - WT_/Wellcome Trust/United Kingdom GR - BB/D019621/1/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101025 PL - United States TA - RNA JT - RNA (New York, N.Y.) JID - 9509184 RN - 0 (RNA Precursors) SB - IM MH - Algorithms MH - Evaluation Studies as Topic MH - *Genes, Reporter MH - Image Processing, Computer-Assisted MH - In Situ Hybridization, Fluorescence/methods MH - Kinetics MH - Models, Biological MH - Models, Genetic MH - RNA 3' End Processing/*genetics/physiology MH - RNA Precursors/analysis/genetics/*metabolism MH - RNA Splicing/*genetics MH - Reverse Transcriptase Polymerase Chain Reaction/*methods MH - *Saccharomyces cerevisiae/genetics/metabolism PMC - PMC2995417 EDAT- 2010/10/27 06:00 MHDA- 2010/12/14 06:00 PMCR- 2010/12/01 CRDT- 2010/10/27 06:00 PHST- 2010/10/27 06:00 [entrez] PHST- 2010/10/27 06:00 [pubmed] PHST- 2010/12/14 06:00 [medline] PHST- 2010/12/01 00:00 [pmc-release] AID - rna.2162610 [pii] AID - RA [pii] AID - 10.1261/rna.2162610 [doi] PST - ppublish SO - RNA. 2010 Dec;16(12):2570-80. doi: 10.1261/rna.2162610. Epub 2010 Oct 25.