Abstract
The spatial organization of the genome plays a critical role in cell-specific biological functions such as gene expression. Existing genome-wide technologies reveal a dynamic interplay between chromatin looping and gene regulation, but the mechanisms by which regulatory interactions between genetic elements are established or maintained remain unclear. Here, we present CLOuD9, a CRISPR-based technology that can create de novo, pairwise chromatin interactions in cells. This technique for chromatin loop reorganization employs dCas9-targeting and ABI1-PYL heterodimerization. It is reversible, but can also establish epigenetic memory under certain conditions, which provides a way to dissect gene regulation mechanisms.
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