High-throughput single-cell chromatin accessibility CRISPR screens enable unbiased identification of regulatory networks in cancer.

ABSTRACT: Chromatin accessibility profiling can identify putative regulatory regions genome wide; however, pooled single-cell methods for assessing the effects of regulatory perturbations on accessibility are limited. Here, we report a modified droplet-based single-cell ATAC-seq protocol for perturbing and evaluating dynamic single-cell epigenetic states. This method (Spear-ATAC) enables simultaneous read-out of chromatin accessibility profiles and integrated sgRNA spacer sequences from thousands of individual cells at once. Spear-ATAC profiling of 104,592 cells representing 414 sgRNA knock-down populations reveals the temporal dynamics of epigenetic responses to regulatory perturbations in cancer cells and the associations between transcription factor binding profiles.

SUBMITTER: Pierce SE 

PROVIDER: S-EPMC8137922 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature