Skok LabDepartment of Pathology, NYU Langone Health

Tools

Methods we have built and shared for seeing chromatin in single cells and single molecules. Each links to the paper that describes it.

Sequencing and single-molecule assays

Assays that read chromatin state, accessibility and methylation from the same molecules.

EpiMethylTag

Measures ATAC-seq or ChIP-seq signal together with DNA methylation from the same material.

Use it to ask whether accessibility or factor binding and methylation coexist at the same sites.

EpiMethylTag workflow schematic.

Imaging

Ways of watching loci move, contract and pair inside the nucleus.

3D DNA-FISH and immuno-FISH

Standardized workflows to measure locus position, contraction and decontraction, and higher-order architecture in fixed cells.

Used throughout our work on antigen-receptor loci and CTCF-mediated folding.

Nuclei with fluorescently labelled loci.

Dual-colour live-cell CRISPR imaging

CRISPR-dCas9 with sgRNA scaffolds tracks repeats and repeat-enriched individual loci in two colours in living cells.

Use it to follow locus dynamics in real time.

Animated 3D image of a nucleus with tagged satellite sequences.

Computational methods

Analysis frameworks for chromatin contacts, methylation and regulatory networks.

MethNet

Builds methylation-anchored networks across patient cohorts to find distal regulatory hubs and the genes they control.

Use it to find regulatory hubs in cancer cohorts.

MethNet overview figure.

4C-ker

Calls interactions from 4C-seq experiments reproducibly, using a hidden Markov model that accounts for distance from the viewpoint.

Use it to identify genome-wide contacts of a single viewpoint.

4C-ker method diagram.

Multi-loci hub detection

Identifies simultaneous interactions among several loci from 4C-seq data, revealing multi-contact hubs.

Use it to test whether contacts happen together rather than separately.

4Tran: transposable elements and host genes

Genome-wide 3D analysis that nominates host genes likely to be regulated by transposable elements.

Use it to connect transposable elements to the genes they contact.

Capture-C tracks of MER41 contacts.

Questions about a method, or want to collaborate?

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