A Multiplexed System for Quantitative Comparisons of Chromatin Landscapes.
Genome-wide profiling of histone modifications can provide systematic insight into the regulatory elements and programs engaged in a given cell type. However, conventional chromatin immunoprecipitation and sequencing (ChIP-seq) does not capture quantitative information on histone modification levels, requires large amounts of starting material, and involves tedious processing of each individual sample. Here, we address these limitations with a technology that leverages DNA barcoding to profile chromatin quantitatively and in multiplexed format. We concurrently map relative levels of multiple histone modifications across multiple samples, each comprising as few as a thousand cells. We demonstrate the technology by monitoring dynamic changes following inhibition of p300, EZH2, or KDM5, by linking altered epigenetic landscapes to chromatin regulator mutations, and by mapping active and repressive marks in purified human hematopoietic stem cells. Hence, this technology enables quantitative studies of chromatin state dynamics across rare cell types, genotypes, environmental conditions, and drug treatments.
|Year of Publication||
2016 Jan 07
|PubMed Central ID||
U54 HG006991 / HG / NHGRI NIH HHS / United States
U01 HL100395 / HL / NHLBI NIH HHS / United States
HG006991 / HG / NHGRI NIH HHS / United States
U54 HG004570 / HG / NHGRI NIH HHS / United States
HG006193 / HG / NHGRI NIH HHS / United States
Howard Hughes Medical Institute / United States
U01HL100395 / HL / NHLBI NIH HHS / United States