期刊
JOURNAL OF GENETICS AND GENOMICS
卷 43, 期 5, 页码 273-288出版社
SCIENCE PRESS
DOI: 10.1016/j.jgg.2016.03.006
关键词
DNA-fragment editing; Chromatin architecture; Topological domain; CTCF; Enhancer; Insulator
资金
- National Natural Science Foundation for the Youth of China [81302861]
- National Natural Science Foundation of China [91519302]
- Science and Technology Commission of Shanghai Municipality [14JC1403600]
The genomes are organized into ordered and hierarchical topological structures in interphase nuclei. Within discrete territories of each chromosome, topologically associated domains (TADs) play important roles in various nuclear processes such as gene regulation. Inside TADs separated by relatively constitutive boundaries, distal elements regulate their gene targets through specific chromatin-looping contacts such as long-distance enhancer-promoter interactions. High-throughput sequencing studies have revealed millions of potential regulatory DNA elements, which are much more abundant than the mere similar to 20,000 genes they control. The recently emerged CRISPR-Cas9 genome editing technologies have enabled efficient and precise genetic and epigenetic manipulations of genomes. The multiplexed and high-throughput CRISPR capabilities facilitate the discovery and dissection of gene regulatory elements. Here, we describe the applications of CRISPR for genome, epigenome, and 3D genome editing, focusing on CRISPR DNA-fragment editing with Cas9 and a pair of sgRNAs to investigate topological folding of chromatin TADs and developmental gene regulation.
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