High-throughput mapping of regulatory DNA.

High-throughput mapping of regulatory DNA.
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DOI:
10.1038/nbt.3468
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发表时间:
2016-02
影响因子:
46.9
通讯作者:
Sherwood, Richard I.
Sherwood, Richard I.
中科院分区:
工程技术1区
文献类型:
--
作者:
Rajagopal, Nisha;Srinivasan, Sharanya;Kooshesh, Kameron;Guo, Yuchun;Edwards, Matthew D.;Banerjee, Budhaditya;Syed, Tahin;Emons, Bart J. M.;Gifford, David K.;Sherwood, Richard I.

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Quantifying the effects of cis-regulatory DNA on gene expression is a major challenge. Here, we present the multiplexed editing regulatory assay (MERA); a high-throughput CRISPR/Cas9-based approach that analyzes the functional impact of the regulatory genome in its native context. MERA tiles thousands of mutations across ~40 kb of cis-regulatory genomic space and uses knock-in green fluorescent protein (GFP) reporters to read out gene activity. Using this approach, we obtain quantitative information on the contribution of cis-regulatory regions to gene expression. We identify proximal and distal regulatory elements necessary for expression of four embryonic stem cell-specific genes. We show a consistent contribution of neighboring gene promoters to gene expression and identify unmarked regulatory elements (UREs) that control gene expression but do not have typical enhancer epigenetic or chromatin features. We compare thousands of functional and non-functional genotypes at a genomic location and identify the basepair-resolution functional motifs of regulatory elements.
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