CUT&Tag overcomes biases of ChIP and establishes chromatin patterns for repetitive genomic loci.

ABSTRACT: New in situ chromatin profiling methods, such as CUT&Tag, have streamlined studies of chromatin features by eliminating the need for up-front purification, but we find that some features are not equally detectable when comparing with previous methods. ChIP-Seq and CUT&Tag identify similar chromatin enrichment profiles for genic loci, such as promoters, but major differences are detected at heterochromatin-associated regions. Unlike ChIP-Seq, CUT&Tag detects robust levels of H3K9me3 over a substantial number of repetitive elements, with especially high sensitivity over evolutionarily young retrotransposons. For example, mouse IAPEz-int elements exhibit strong enrichment using CUT&Tag but underrepresentation using ChIP-Seq. Additionally, several euchromatin-associated proteins, such a

SUBMITTER: Park BJ 

PROVIDER: S-EPMC12605858 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature