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11:22
Measuring the Kinetics of mRNA Transcription in Single Living Cells
Published on: August 25, 2011
16.1K
Full-length mRNA sequencing uncovers a widespread coupling between transcription initiation and mRNA processing
Seyed Yahya Anvar1,2,3, Guy Allard4, Elizabeth Tseng5
1Department of Human Genetics, Leiden University Medical Center, Leiden, 2300 RC, The Netherlands. s.y.anvar@lumc.nl.
Genome Biology
|March 31, 2018
Summary
This study reveals complex coordination between transcription initiation and mRNA processing for thousands of genes. Full-length mRNA sequencing uncovers novel insights into gene expression regulation and protein identification.
Area of Science:
- Molecular Biology
- Genomics
- Transcriptomics
Background:
- Gene expression is tightly regulated at both transcriptional and post-transcriptional levels.
- Coordination of these regulatory mechanisms is essential for cellular function.
Purpose of the Study:
- To investigate the interdependence of transcription initiation, splicing, and polyadenylation events on single mRNA molecules.
- To explore the complexity of transcriptome regulation using full-length mRNA sequencing.
Main Methods:
- Utilized full-length mRNA sequencing to analyze transcription initiation, splicing, and polyadenylation.
- Applied shotgun proteomics to validate predicted novel open reading frames.
- Analyzed data from MCF-7 breast cancer cells and three human primary tissues (brain, heart, liver).
Main Results:
- Identified 2700 genes with interdependent transcription initiation, splicing, and polyadenylation events in MCF-7 cells.
- Observed similar interdependency patterns across human primary tissues.
- Predicted thousands of novel open reading frames and provided evidence for their translation, improving proteogenomics analysis.
Conclusions:
- Demonstrated that transcriptome complexity is not fully understood.
- Provided a foundation for uncovering mechanisms coordinating transcription initiation and mRNA processing.
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