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The three-dimensional configuration of the genome is complex, dynamic and crucial for gene regulation. In the past few years, technological advances in chromosome conformation capture methods and in microscopy techniques revealed how the organization of the genome is interconnected with nuclear architecture and can vary between cell types and during cell differentiation and development. This collection includes recent articles from across the Nature group of journals and showcases both the latest advances in the methodologies used to study genome organization, and our recent understanding of how genome organization and nuclear architecture regulate gene expression, cell fate and cell function in physiology and disease. The content of this collection has been chosen by the editors of Nature Reviews Molecular Cell Biology.
This protocol describes targeted chromatin capture (T2C), a high-resolution method to interrogate 3D chromatin organization and genomic interactions at sub-kilobase-pair resolution that requires minimal cell numbers and sequencing depth.
This protocol describes how to prepare samples for labeling nuclei of cultured mammalian cells for 3D structured illumination microscopy of nuclear structures. Image acquisition, registration and downstream image analysis are also described.
Li et al. provide a protocol for long-read ChIA-PET, a technique for mapping chromatin interactions. The longer paired-end tags, which are generated by tagmentation, provide sufficient coverage to determine haplotype-specific chromatin interactions at single-nucleotide resolution.
Ramani et al. describe a protocol for in situ DNase Hi-C as an alternative to traditional Hi-C methods that use restriction enzymes. The use of DNase I for chromatin digestion circumvents the resolution limit imposed when relying on genomic restriction sites.