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Oligonucleotide-directed proximity-interactome mapping (O-MAP): A unified method for discovering RNA-interacting proteins, transcripts and genomic loci in situ

ABSTRACT: Oligonucleotide-directed proximity-interactome mapping (O-MAP): A unified method for discovering RNA-interacting proteins, transcripts and genomic loci in situ

PROVIDER: PRJNA899550 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR22235142_1.fastq.gz	Fastqsanger.gz
	SRR22235142_2.fastq.gz	Fastqsanger.gz
	SRR22235143_1.fastq.gz	Fastqsanger.gz
	SRR22235143_2.fastq.gz	Fastqsanger.gz
	SRR22235144_1.fastq.gz	Fastqsanger.gz

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Oligonucleotide-directed proximity-interactome mapping (O-MAP): A unified method for discovering RNA-interacting proteins, transcripts and genomic loci in situ [ITS OMAP ChIP]

Project description:Oligonucleotide-directed proximity-interactome mapping (O-MAP): A unified method for discovering RNA-interacting proteins, transcripts and genomic loci in situ [ITS OMAP ChIP]

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Oligonucleotide-directed proximity-interactome mapping (O-MAP): A unified method for discovering RNA-interacting proteins, transcripts and genomic loci in situ [ITS OMAP ChIP]

Project description:Throughout biology, RNA molecules form complex networks of molecular interactions that are central to their function, but remain challenging to investigate. Here, we introduce Oligonucleotide-mediated proximity-interactome MAPping (O-MAP), a straightforward method for elucidating the biomolecules near an RNA of interest, within its native cellular context. O-MAP uses programmable oligonucleotide probes to deliver proximity-biotinylating enzymes to a target RNA, enabling nearby molecules to be enriched by streptavidin pulldown. O-MAP induces exceptionally precise RNA-localized in situ biotinylation, and unlike alternative methods it enables straightforward optimization of its targeting accuracy. Using the 47S pre-ribosomal RNA and long noncoding RNA Xist as models, we develop O-MAP workflows for unbiased discovery of RNA-proximal proteins, transcripts, and genomic loci. This revealed unexpected co-compartmentalization of Xist and other chromatin-regulatory RNAs and enabled systematic characterization of nucleolar-chromatin interactions across multiple cell lines. O-MAP is portable to cultured cells, organoids, and tissues, and to RNAs of various lengths, abundances, and sequence composition. And, O-MAP requires no genetic manipulation and uses exclusively off-the-shelf parts. We therefore anticipate its application to a broad array of RNA phenomena.

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Oligonucleotide-directed proximity-interactome mapping (O-MAP): A unified method for discovering RNA-interacting proteins, transcripts and genomic loci in situ [Xist OMAP ChIP]

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Oligonucleotide-mediated proximity-interactome mapping (O-MAP): A unified method for discovering RNA-interacting proteins, transcripts and genomic loci in situ.

Project description:Within all cells, RNA molecules form complex networks of molecular interactions that are central to their function, but discovering these interactions remains challenging. Here, we introduce Oligonucleotide-mediated proximity-interactome MAPping (O-MAP), a straightforward method for elucidating the biomolecules near an RNA of interest, within its native cellular context. O-MAP uses programmable DNA probes to deliver proximity-biotinylating enzymes to a target RNA, enabling molecules within that RNA's subcellular microcompartment to be enriched by streptavidin pulldown. O-MAP induces exceptionally precise in situ biotinylation, and unlike alternative methods it enables straightforward optimization of its RNA-targeting accuracy. Using the 47S pre-ribosomal RNA and long noncoding RNA Xist as models, we develop O-MAP workflows for unbiased discovery of RNA-proximal proteins, transcripts, and genomic loci. This revealed unexpected co-compartmentalization of Xist and other chromatin-regulatory RNAs, and enabled systematic discovery of nucleolar-chromatin interactions across multiple cell lines. O-MAP uses exclusively off-the-shelf parts requiring no genetic- or cell-line engineering and is easily portable across diverse specimen-types and target RNAs. We therefore anticipate its application to a broad array of RNA phenomena.

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