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AKAP12 UV RNA immunoprecipitation followed by high throughput sequencing

ABSTRACT: AKAP12 UV RNA immunoprecipitation followed by high throughput sequencing

PROVIDER: PRJNA1040162 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26822800_1.fastq.gz	Fastqsanger.gz
	SRR26822800_2.fastq.gz	Fastqsanger.gz
	SRR26822801_1.fastq.gz	Fastqsanger.gz
	SRR26822801_2.fastq.gz	Fastqsanger.gz
	SRR26822802_1.fastq.gz	Fastqsanger.gz

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AKAP12 UV RNA immunoprecipitation followed by high throughput sequencing

Project description:Regulation of subcellular mRNA localisation is a fundamental biological mechanism, which adds a spatial dimension to the diverse layers of post-transcriptional control of gene expression. Insights into this phenomenon have been described in a multitude of cell types and across taxonomic kingdoms, highlighting its biological significance. The cellular compartment in which mRNAs are located may define distinct aspects of the encoded proteins, ranging from production rate and complex formation to localised activity. Ultimately, mRNA localisation supports compartmentalised mechanistic outputs that can respond to local stimuli, orient migration, or even shape cells. We used an unbiased method to profile the RNA-bound proteome in migrating endothelial cells and found that the plasma membrane (PM)-associated A-kinase anchor protein 12 (AKAP12) interacts with various mRNAs, including mRNAs encoding kinases with Actin remodelling activity. To identify transcripts bound by AKAP12, we carried out UV crosslinking experiments followed by RNA immunoprecipitation and high throughput sequencing. Our data offer novel insights in complex mechanisms of spatial control of gene expression.

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Conditional Hfq association with small non-coding RNAs in Pseudomonas aeruginosa revealed through comparative UV crosslinking immunoprecipitation followed by high-throughput sequencing

Project description:Conditional Hfq association with small non-coding RNAs in Pseudomonas aeruginosa revealed through comparative UV crosslinking immunoprecipitation followed by high-throughput sequencing

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Conditional Hfq association with small non-coding RNAs in Pseudomonas aeruginosa revealed through comparative UV crosslinking immunoprecipitation followed by high-throughput sequencing [RNA-Seq]

Project description:Bacterial small non-coding RNAs (sRNAs) play post-transcriptional regulatory roles in cellular responses to changing environmental cues and in adaptation to harsh conditions. Generally, the RNA-binding protein Hfq helps sRNAs associate with target mRNAs to modulate their translation and to modify global RNA pools depending on physiological state. Here, a combination of in vivo UV crosslinking immunoprecipitation followed by high-throughput sequencing (CLIP-seq) and total RNA-seq showed that Hfq interacts with different regions of the P. aeruginosa transcriptome under planktonic versus biofilm conditions. In the present approach, P. aeruginosa Hfq preferentially interacted with repeats of the AAN triplet motif at mRNA 5’ UTRs and sRNAs, and U-rich sequences at rho-independent terminators. Further transcriptome analysis suggested that sRNAs association with Hfq is primarily a function of their expression levels, strongly supporting that the pool of Hfq-associated RNAs is equilibrated by RNA concentration-driven cycling on and off Hfq. Overall, our combinatorial CLIP-seq and total RNA-seq approach highlights conditional sRNA associations with Hfq as a novel aspect of post-transcriptional regulation in P. aeruginosa.

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Conditional Hfq association with small non-coding RNAs in Pseudomonas aeruginosa revealed through comparative UV crosslinking immunoprecipitation followed by high-throughput sequencing [RIP-Seq]

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Conditional Hfq association with small non-coding RNAs in Pseudomonas aeruginosa revealed through comparative UV crosslinking immunoprecipitation followed by high-throughput sequencing [RNA-Seq]

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Modulation of AKAP12 in the liver regulates lipid homeostasis and inflammation

Project description:Dysregulation of lipid homeostasis is a feature of alcohol-associated liver disease (ALD). A-kinase anchoring protein 12 (AKAP12) is a scaffolding partner of the cAMP-dependent protein kinase, PKA that controls its spatiotemporal localization. Activation of PKA by cAMP inhibits lipogenesis and facilitates fatty acid oxidation (FAO). We examined how AKAP12’ could regulate alcohol-associated steatosis. Alcohol exposure reduced AKAP12’s interaction with PKA and suppressed PKA activation. Forced expression of AKAP12 overcame the suppression of PKA activity in human hepatocytes and in livers of mice exposed to alcohol. This led to a decrease in hepatic steatosis. Disrupting the scaffold of AKAP12 and PKA by CRISPR editing increased steatosis and inflammation. RNA sequencing analysis of hepatocytes from alchol fed mice and normal mice demonstrated key lipogenic and inflammatory pathways regulated by AKAP12 overexpression. RNA sequencing of total liver from mice with AKAP12-PKA binding site CRISPR editing or AKAP12 overexpression confirmed regulation of lipogenic and inflammatory pathways by AKAP12

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