Chromatin Immunoprecipitation sequencing (ChIP-seq or ChIP sequencing) is a robust and high-resolution technique for genome-wide profiling of protein-DNA interactions. Specifically, it enables the precise mapping of binding loci for histone-modified DNA segments, transcription factors, and other DNA-associated proteins. This approach integrates the target-specific enrichment capability of chromatin immunoprecipitation (ChIP) — which selectively isolates endogenous protein-DNA complexes — with the high-throughput sequencing capacity of next-generation sequencing (NGS), thereby allowing comprehensive characterization of the captured DNA fragments at a genome-scale level.
As protein-DNA complexes are recovered from living cells, ChIP-seq can be used to compare binding sites in different cell types and tissues, or under different conditions. Thus, ChIP-seq is a vital tool for studying gene regulation and epigenetic mechanisms. It can also be combined with other approaches such as RNA-seq and ATAC-seq to gain further insights into the multi-omics of different biological processes.
