EndoQuad: a comprehensive genome-wide experimentally validated endogenous G-quadruplex database
文献类型: 外文期刊
第一作者: Qian, Sheng Hu
作者: Qian, Sheng Hu;Shi, Meng-Wei;Xiong, Yu-Li;Zhang, Yuan;Zhang, Ze-Hao;Song, Xue-Mei;Deng, Xin-Yin;Chen, Zhen-Xia;Chen, Zhen-Xia;Chen, Zhen-Xia
作者机构:
期刊名称:NUCLEIC ACIDS RESEARCH ( 影响因子:14.9; 五年影响因子:16.4 )
ISSN: 0305-1048
年卷期: 2023 年
页码:
收录情况: SCI
摘要: G-quadruplexes (G4s) are non-canonical four-stranded structures and are emerging as novel genetic regulatory elements. However, a comprehensive genomic annotation of endogenous G4s (eG4s) and systematic characterization of their regulatory network are still lacking, posing major challenges for eG4 research. Here, we present EndoQuad (https://EndoQuad.chenzxlab.cn/) to address these pressing issues by integrating high-throughput experimental data. First, based on high-quality genome-wide eG4s mapping datasets (human: 1181; mouse: 24; chicken: 2) generated by G4 ChIP-seq/CUT&Tag, we generate a reference set of genome-wide eG4s. Our multi-omics analyses show that most eG4s are identified in one or a few cell types. The eG4s with higher occurrences across samples are more structurally stable, evolutionarily conserved, enriched in promoter regions, mark highly expressed genes and associate with complex regulatory programs, demonstrating higher confidence level for further experiments. Finally, we integrate millions of functional genomic variants and prioritize eG4s with regulatory functions in disease and cancer contexts. These efforts have culminated in the comprehensive and interactive database of experimentally validated DNA eG4s. As such, EndoQuad enables users to easily access, download and repurpose these data for their own research. EndoQuad will become a one-stop resource for eG4 research and lay the foundation for future functional studies. Graphical Abstract
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