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SLAM-Drop-seq reveals mRNA kinetic rates throughout the cell cycle

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Item Type:Article
Title:SLAM-Drop-seq reveals mRNA kinetic rates throughout the cell cycle
Creators Name:Liu, H., Arsiè, R., Schwabe, D., Schilling, M., Minia, I., Alles, J., Boltengagen, A., Kocks, C., Falcke, M., Friedman, N., Landthaler, M. and Rajewsky, N.
Abstract:RNA abundance is tightly regulated in eukaryotic cells by modulating the kinetic rates of RNA production, processing, and degradation. To date, little is known about time-dependent kinetic rates during dynamic processes. Here, we present SLAM-Drop-seq, a method that combines RNA metabolic labeling and alkylation of modified nucleotides in methanol-fixed cells with droplet-based sequencing to detect newly synthesized and preexisting mRNAs in single cells. As a first application, we sequenced 7280 HEK293 cells and calculated gene-specific kinetic rates during the cell cycle using the novel package Eskrate. Of the 377 robust-cycling genes that we identified, only a minor fraction is regulated solely by either dynamic transcription or degradation (6 and 4%, respectively). By contrast, the vast majority (89%) exhibit dynamically regulated transcription and degradation rates during the cell cycle. Our study thus shows that temporally regulated mRNA degradation is fundamental for the correct expression of a majority of cycling genes. SLAM-Drop-seq, combined with Eskrate, is a powerful approach to understanding the underlying mRNA kinetics of single-cell gene expression dynamics in continuous biological processes.
Keywords:Cell Cycle, mRNA Kinetics, Single Cells, Temporal Regulation, Transcription and Degradation
Source:Molecular Systems Biology
ISSN:1744-4292
Publisher:Wiley
Volume:19
Number:10
Page Range:e11427
Date:12 October 2023
Official Publication:https://doi.org/10.15252/msb.202211427
PubMed:View item in PubMed

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