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Single cell analysis of protein epitopes and chromatin accessibility using PHAGE-ATAC [CD8_Hashing]

ABSTRACT: Single cell analysis of protein epitopes and chromatin accessibility using PHAGE-ATAC [CD8_Hashing]

PROVIDER: PRJNA661454 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12588751_1.fastq.gz	Fastqsanger.gz
	SRR12588751_2.fastq.gz	Fastqsanger.gz
	SRR12588752_1.fastq.gz	Fastqsanger.gz
	SRR12588752_2.fastq.gz	Fastqsanger.gz

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Single cell analysis of protein epitopes and chromatin accessibility using PHAGE-ATAC [CD8_Hashing]

Project description:Single cell multi-omic readouts of both the cellular transcriptome and proteome have significantly enhanced our ability to comprehensively characterize cellular states. Most approaches in this area rely on oligonucleotide barcode-conjugated antibodies that target cell surface epitopes of interest, enabling their concomitant detection with the transcriptome. However, a similar high-throughput measurement of other cellular modalities such as the epigenome in concert with protein levels have not been described. Moreover, detection of epitopes is limited to antigens for which a specific antibody is available. Here, we introduce PHAGE-ATAC, an approach that enables the scalable and simultaneous detection of protein levels and chromatin accessibility data in single cells using the assay of transposase-accessible chromatin with sequencing (ATAC-seq). Quantitative detection of proteins by PHAGE-ATAC is accomplished through the use of engineerable nanobody-displaying phages that are genetically barcoded within the nanobody-encoding phagemids. We demonstrate the utility of PHAGE-ATAC for multimodal single cell genomic analysis in both cell lines and primary human cells. Analogous to phage display approaches, we further establish a synthetic high-complexity library of nanobody-displaying phages and demonstrate its utility to select novel antigen-specific nanobodies for PHAGE-ATAC.

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Project description:Multi-modal measurements of single cell profiles are a powerful tool for characterizing cell states and regulatory mechanisms. While current methods allow profiling of RNA along with either readouts of chromatin or protein, connecting chromatin state to protein levels remains a barrier. Here, we developed PHAGE-ATAC, a method that uses engineered camelid single-domain antibody (‘nanobody’)-displaying phages for simultaneous single-cell measurement of surface proteins, chromatin accessibility profiles, and mtDNA-based clonal tracing through a single-cell and massively parallel droplet-based assay of transposase-accessible chromatin with sequencing (ATAC-seq). We demonstrate PHAGE-ATAC for multimodal analysis in primary human immune cells, for multiplexing, for intracellular protein analysis, and for the detection of SARS-CoV-2 spike protein. Finally, we construct a synthetic high-complexity phage library for selection of novel antigen-specific nanobodies that bind cells of particular molecular profiles, opening a new avenue for protein detection, cell characterization and screening with single-cell genomics.

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Single cell analysis of protein epitopes and chromatin accessibility using PHAGE-ATAC

Project description:This SuperSeries is composed of the SubSeries listed below.

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