期刊
JOURNAL OF MOLECULAR BIOLOGY
卷 432, 期 3, 页码 653-664出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jmb.2019.12.006
关键词
topologically associated domain (TAD); Hi -C; CTCF; loop extrusion; boundaries
资金
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [678624]
- European Research Council (ERC) [678624] Funding Source: European Research Council (ERC)
Chromosome conformation capture and orthologous methods uncovered the spatial organization of metazoan chromosomes into autonomously folded substructures, often termed topologically associated domains (TADs). There is a striking correlation between TAD organization and hallmarks of genome function, such as histone modifications or gene expression, and disruptions of specific TAD structures have been associated with pathological misexpression of underlying genes. However, complete disruption of TADs seems to have mild effects on the transcriptome, raising questions as to the importance of chromatin topology in regulating the expression of most genes. Furthermore, despite a growing number of genetic perturbation studies, it is still largely unclear how TAD-like domains are defined, maintained, or potentially reorganized. This perspective article discusses the recent work exploring the complexity of the relationship between TADs and transcription, arguing that it is not satisfactorily explained by any of the rules that have been previously described. (C) 2019 The Author(s). Published by Elsevier Ltd.
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