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Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [ago2KO s4U TT-SLAMseq]

ABSTRACT: Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [ago2KO s4U TT-SLAMseq]

PROVIDER: PRJNA531913 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR8877880.fastq.gz	Fastqsanger.gz
	SRR8877881.fastq.gz	Fastqsanger.gz
	SRR8877875.fastq.gz	Fastqsanger.gz
	SRR8877876.fastq.gz	Fastqsanger.gz
	SRR8877877.fastq.gz	Fastqsanger.gz

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Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [ago2KO s4U TT-SLAMseq]

Project description:Argonaute (Ago)-bound microRNAs (miRNAs) silence mRNA expression in a dynamic and regulated manner to control organismal development, physiology and disease. Here, we employed metabolic sequencing of small RNAs for a comprehensive view on intracellular miRNA kinetics in Drosophila. Based on absolute biogenesis and decay rates, miRNAs rank among the fastest produced and most long-lived cellular transcripts, enabling them to reach >105 copies per cell at steady-state. Tight coupling of steps in biogenesis produces mature miRNAs within minutes and is effectively disrupted by pre-miRNA uridylation. In contrast, control over Ago protein homeostasis generates a kinetic bottleneck that cooperates with ncRNA surveillance to ensure faithful miRNA loading. Finally, regulated small RNA decay enables the rapid turnover of specific Ago1-bound miRNAs but not of Ago2-bound siRNAs, reflecting key differences in the robustness of small RNA silencing pathways. Our work opens new experimental avenues to deconvolute the timescales, molecular features, and regulation of small RNA silencing pathways in living cells.

2019-08-06 | GSE129597 | GEO

Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [WT s4U time-course miRNA-seq]

Project description:Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [WT s4U time-course miRNA-seq]

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Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [ago2ko s4U time-course miRNA-seq]

Project description:Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [ago2ko s4U time-course miRNA-seq]

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Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis

Project description:Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis

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Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [Ago1OE + TailorKO]

Project description:Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [Ago1OE + TailorKO]

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Slamseq of whole neurons with perturbed mRNA degradation machinery

Project description:We perturbed mRNA degradation machinery in Ascl1-induced neurons (iNeurons) and investigated the change in mRNA half-lives. We performed SLAMseq Metabolic RNA Labeling on Mutant iNeuron line harbouring a ponasteroneA-inducible heterozygous dominant-negative Caf1 (dnCaf1) and on Wild Type iNeurons (WT). The Slamseq technique provided snapshots of mRNA kinetics allowing to estimate mRNA half-lives and assess the effect of mRNA degradation machinery on the level of mRNA stability.

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Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [nbrKO miRNA-seq]

Project description:Time-resolved small RNA sequencing unravels molecular principles of microRNA homeostasis [nbrKO miRNA-seq]

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Slamseq of whole mouse primary cortical neurons (mPCN) with perturbed mRNA degradation machinery

Project description:We perturbed mRNA degradation machinery in mouse primary cortical neurons (mPCN) and investigated the change in mRNA half-lives. We performed SLAMseq Metabolic RNA Labeling on Mutant mPCN line harbouring a ponasteroneA-inducible heterozygous dominant-negative Caf1 (dnCaf1) and on GFP-transfected mPCNs. The Slamseq technique provided snapshots of mRNA kinetics allowing to estimate mRNA half-lives.

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