TY - JOUR A1 - Baudement, Marie-Odile A1 - Cournac, Axel A1 - Court, Franck A1 - Seveno, Marie A1 - Parrinello, Hugues A1 - Reynes, Christelle A1 - Sabatier, Robert A1 - Bouschet, Tristan A1 - Yi, Zhou A1 - Sallis, Sephora A1 - Tancelin, Mathilde A1 - Rebouissou, Cosette A1 - Cathala, Guy A1 - Lesne, Annick A1 - Mozziconacci, Julien A1 - Journot, Laurent A1 - Forné, Thierry T1 - High-salt–recovered sequences are associated with the active chromosomal compartment and with large ribonucleoprotein complexes including nuclear bodies Y1 - 2018/11/01 JF - Genome Research JO - Genome Research SP - 1733 EP - 1746 DO - 10.1101/gr.237073.118 VL - 28 IS - 11 UR - http://genome.cshlp.org/content/28/11/1733.abstract N2 - The mammalian cell nucleus contains numerous discrete suborganelles named nuclear bodies. While recruitment of specific genomic regions into these large ribonucleoprotein (RNP) complexes critically contributes to higher-order functional chromatin organization, such regions remain ill-defined. We have developed the high-salt–recovered sequences-sequencing (HRS-seq) method, a straightforward genome-wide approach whereby we isolated and sequenced genomic regions associated with large high-salt insoluble RNP complexes. By using mouse embryonic stem cells (ESCs), we showed that these regions essentially correspond to the most highly expressed genes, and to cis-regulatory sequences like super-enhancers, that belong to the active A chromosomal compartment. They include both cell-type–specific genes, such as pluripotency genes in ESCs, and housekeeping genes associated with nuclear bodies, such as histone and snRNA genes that are central components of Histone Locus Bodies and Cajal bodies. We conclude that HRSs are associated with the active chromosomal compartment and with large RNP complexes including nuclear bodies. Association of such chromosomal regions with nuclear bodies is in agreement with the recently proposed phase separation model for transcription control and might thus play a central role in organizing the active chromosomal compartment in mammals. ER -