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STAU2 Binds a Complex RNA Cargo that Changes Temporally With Production of Diverse Intermediate Progenitors During Mouse Corticogenesis

ABSTRACT: STAU2 Binds a Complex RNA Cargo that Changes Temporally With Production of Diverse Intermediate Progenitors During Mouse Corticogenesis

PROVIDER: PRJNA685855 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR13263809.fastq.gz	Fastqsanger.gz
	SRR13263810.fastq.gz	Fastqsanger.gz
	SRR13263811.fastq.gz	Fastqsanger.gz
	SRR13263812.fastq.gz	Fastqsanger.gz
	SRR13263813.fastq.gz	Fastqsanger.gz

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STAU2 Binds a Complex RNA Cargo that Changes Temporally With Production of Diverse Intermediate Progenitors During Mouse Corticogenesis

Project description:The double-stranded RNA binding protein (RBP) STAU2 displays temporally regulated associations with RNA determinants that contribute to IPC and cortical lamination during corticogenesis.

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STAU2 binds a complex RNA cargo that changes temporally with production of diverse intermediate progenitor cells during mouse corticogenesis.

Project description:STAU2 is a double-stranded RNA-binding protein enriched in the nervous system. During asymmetric divisions in the developing mouse cortex, STAU2 preferentially distributes into the intermediate progenitor cell (IPC), delivering RNA molecules that can impact IPC behavior. Corticogenesis occurs on a precise time schedule, raising the hypothesis that the cargo STAU2 delivers into IPCs changes over time. To test this, we combine RNA-immunoprecipitation with sequencing (RIP-seq) over four stages of mouse cortical development, generating a comprehensive cargo profile for STAU2. A subset of the cargo was 'stable', present at all stages, and involved in chromosome organization, macromolecule localization, translation and DNA repair. Another subset was 'dynamic', changing with cortical stage, and involved in neurogenesis, cell projection organization, neurite outgrowth, and included cortical layer markers. Notably, the dynamic STAU2 cargo included determinants of IPC versus neuronal fates and genes contributing to abnormal corticogenesis. Knockdown of one STAU2 target, Taf13, previously linked to microcephaly and impaired myelination, reduced oligodendrogenesis in vitro. We conclude that STAU2 contributes to the timing of corticogenesis by binding and delivering complex and temporally regulated RNA cargo into IPCs.

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Project description:The double-stranded RNA binding protein Staufen2 (Stau2) is asymmetrically localized and segregated during asymmetric cell divisions in the developing mouse cortex and promotes intermediate progenitor cell fate. We carry out RNA immunoprecipitation with a Stau2 specific antibody, followed by microarray analysis to identify Stau2 assoicated RNAs that may be shuttled asymmetrically into one daughter cell thus affecting cell fate.

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