期刊
CURRENT OPINION IN GENETICS & DEVELOPMENT
卷 61, 期 -, 页码 17-24出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.gde.2020.03.004
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资金
- Agence Nationale de la Recherche [ANR-18-CE12-0022-02]
- Agence Nationale de la Recherche (ANR) [ANR-18-CE12-0022] Funding Source: Agence Nationale de la Recherche (ANR)
Genomic imprinting gives rise to parent-of-origin dependent allelic gene expression. Most imprinted genes cluster in domains where differentially methylated regions (DMRs)-carrying CpG methylation on one parental allele-regulate their activity. Several imprinted DMRs bind CTCF on the non-methylated allele. CTCF structures TADs ('Topologically Associating Domains'), which are structural units of transcriptional regulation. Recent investigations show that imprinted domains are embedded within TADs that are similar on both parental chromosomes. Within these TADs, however, allelic subdomains are structured by combinations of mono-allelic and bi-allelic CTCF binding that guide imprinted expression. This emerging view indicates that imprinted chromosomal domains should be considered at the overarching TAD level, and questions how CTCF integrates with other regulatory proteins and lncRNAs to achieve imprinted transcriptional programs.
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