Schueler, Markus ; Munschauer, Mathias ; Gregersen, Lea Haarup ; Finzel, Ana ; Loewer, Alexander ; Chen, Wei ; Landthaler, Markus ; Dieterich, Christoph
:
Differential protein occupancy profiling of the mRNA transcriptome.
In:
Genome biology, 15
(1)
R15.
ISSN 1474-760X
[Artikel], (2014)
Kurzbeschreibung (Abstract)
BACKGROUND
RNA-binding proteins (RBPs) mediate mRNA biogenesis, translation and decay. We recently developed an approach to profile transcriptome-wide RBP contacts on polyadenylated transcripts by next-generation sequencing. A comparison of such profiles from different biological conditions has the power to unravel dynamic changes in protein-contacted cis-regulatory mRNA regions without a priori knowledge of the regulatory protein component.
RESULTS
We compared protein occupancy profiles of polyadenylated transcripts in MCF7 and HEK293 cells. Briefly, we developed a bioinformatics workflow to identify differential crosslinking sites in cDNA reads of 4-thiouridine crosslinked polyadenylated RNA samples. We identified 30,000 differential crosslinking sites between MCF7 and HEK293 cells at an estimated false discovery rate of 10%. 73% of all reported differential protein-RNA contact sites cannot be explained by local changes in exon usage as indicated by complementary RNA-seq data. The majority of differentially crosslinked positions are located in 3' UTRs, show distinct secondary-structure characteristics and overlap with binding sites of known RBPs, such as ELAVL1. Importantly, mRNA transcripts with the most significant occupancy changes show elongated mRNA half-lives in MCF7 cells.
CONCLUSIONS
We present a global comparison of protein occupancy profiles from different cell types, and provide evidence for altered mRNA metabolism as a result of differential protein-RNA contacts. Additionally, we introduce POPPI, a bioinformatics workflow for the analysis of protein occupancy profiling experiments. Our work demonstrates the value of protein occupancy profiling for assessing cis-regulatory RNA sequence space and its dynamics in growth, development and disease.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2014 |
| Autor(en): | Schueler, Markus ; Munschauer, Mathias ; Gregersen, Lea Haarup ; Finzel, Ana ; Loewer, Alexander ; Chen, Wei ; Landthaler, Markus ; Dieterich, Christoph |
| Titel: | Differential protein occupancy profiling of the mRNA transcriptome. |
| Sprache: | Englisch |
| Kurzbeschreibung (Abstract): | BACKGROUND RNA-binding proteins (RBPs) mediate mRNA biogenesis, translation and decay. We recently developed an approach to profile transcriptome-wide RBP contacts on polyadenylated transcripts by next-generation sequencing. A comparison of such profiles from different biological conditions has the power to unravel dynamic changes in protein-contacted cis-regulatory mRNA regions without a priori knowledge of the regulatory protein component. RESULTS We compared protein occupancy profiles of polyadenylated transcripts in MCF7 and HEK293 cells. Briefly, we developed a bioinformatics workflow to identify differential crosslinking sites in cDNA reads of 4-thiouridine crosslinked polyadenylated RNA samples. We identified 30,000 differential crosslinking sites between MCF7 and HEK293 cells at an estimated false discovery rate of 10%. 73% of all reported differential protein-RNA contact sites cannot be explained by local changes in exon usage as indicated by complementary RNA-seq data. The majority of differentially crosslinked positions are located in 3' UTRs, show distinct secondary-structure characteristics and overlap with binding sites of known RBPs, such as ELAVL1. Importantly, mRNA transcripts with the most significant occupancy changes show elongated mRNA half-lives in MCF7 cells. CONCLUSIONS We present a global comparison of protein occupancy profiles from different cell types, and provide evidence for altered mRNA metabolism as a result of differential protein-RNA contacts. Additionally, we introduce POPPI, a bioinformatics workflow for the analysis of protein occupancy profiling experiments. Our work demonstrates the value of protein occupancy profiling for assessing cis-regulatory RNA sequence space and its dynamics in growth, development and disease. |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Genome biology |
| Band: | 15 |
| (Heft-)Nummer: | 1 |
| Fachbereich(e)/-gebiet(e): | Fachbereich Biologie, Biology Fachbereich Biologie, Biology > Molekularbiologie der Stressantwort |
| Hinterlegungsdatum: | 02 Sep 2015 08:30 |
| Export: |
Optionen (nur für Redakteure)
 |
Eintrag anzeigen |
Drucken
Impressum