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RNAseq of PURA knockdown in HeLa cells

ABSTRACT: RNAseq of PURA knockdown in HeLa cells

PROVIDER: PRJNA798378 | ENA |

REPOSITORIES: ENA

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RNAseq of PURA knockdown in HeLa cells

Project description:Here, we show that PURA predominantly resides in the cytoplasm, where it binds to a large set of transcripts. Many of these transcripts change abundance in response to PURA depletion, in parts reflected in altered protein expression levels. A closer inspection of the regulated proteins indicates a role of PURA in immune responses, mitochondrial function, autophagy and processing (P)-body activity.

2022-12-12 | GSE193900 | GEO

iCLIP of endogenous PURA in HeLa cells

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Depletion of the RNA-binding protein PURA triggers changes in posttranscriptional gene regulation and loss of P-bodies

Project description:The RNA-binding protein PURA has been implicated in the rare, monogenetic, neurodevelopmental disorder PURA Syndrome. PURA binds both DNA and RNA and has been associated with various cellular functions. Only little is known about its main cellular functions and the molecular pathways affected upon PURA depletion. Here, we show that PURA is predominantly located in the cytoplasm, where it binds to thousands of mRNAs. Many of these transcripts change abundance in response to PURA depletion. The encoded proteins suggest a role for PURA in immune responses, mitochondrial function, autophagy and processing (P)-body activity. Intriguingly, reduced PURA levels decrease the expression of the integral P-body components LSM14A and DDX6, and strongly affect P-body formation in human cells. Furthermore, PURA knockdown results in stabilization of P-body-enriched transcripts, whereas other mRNAs decrease. Hence, reduced PURA levels, as reported in patients with PURA Syndrome, influence the formation and composition of this phase-separated RNA processing machinery. Our study on PURA provides a blueprint for the comprehensive understanding of the tight connection between P-body-associated RNA regulation and neurodevelopmental disorders.

2022-12-19 | PXD030266 | Pride

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