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Massively parallel reporter assay of 3’UTR sequences identifies in vivo rules for mRNA degradation

ABSTRACT: Massively parallel reporter assay of 3’UTR sequences identifies in vivo rules for mRNA degradation

PROVIDER: PRJNA417597 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR6268140.fastq.gz	Fastqsanger.gz
	SRR6268150.fastq.gz	Fastqsanger.gz
	SRR6268160.fastq.gz	Fastqsanger.gz
	SRR6268170.fastq.gz	Fastqsanger.gz
	SRR6268180.fastq.gz	Fastqsanger.gz

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Massively parallel reporter assay of 3’UTR sequences identifies in vivo rules for mRNA degradation

Project description:The stability of mRNAs is regulated by signals within their sequences, but a systematic and predictive understanding of the underlying sequence rules remains elusive. Here, we introduce UTR-Seq, a combination of massively parallel reporter assays and regression models, to survey the dynamics of tens-of-thousands of 3’UTR sequences during early zebrafish embryogenesis. UTR-Seq revealed two temporal degradation programs: a maternally encoded early-onset program and a late-onset program that accelerated degradation after zygotic genome activation. Three signals regulated early-onset rates: stabilizing poly-U and UUAG sequences, and destabilizing GC-rich signals. Three signals explained late-onset degradation: miR-430 seeds, AU-rich sequences and Pumilio recognition sites. Sequence based regression models translated 3’UTRs into their unique decay patterns, and predicted the in vivo impact of sequence signals on mRNA stability. Their application led to the successful design of artificial 3’UTRs that conferred specific mRNA dynamics. UTR-Seq provides a general strategy to uncover the rules of RNA cis-regulation.

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