Article ; Online: Three-Dimensional Genomic Structure and Cohesin Occupancy Correlate with Transcriptional Activity during Spermatogenesis.
2019 Volume 28, Issue 2, Page(s) 352–367.e9
Abstract: Mammalian gametogenesis involves dramatic and tightly regulated chromatin remodeling, whose regulatory pathways remain largely unexplored. Here, we generate a comprehensive high-resolution structural and functional atlas of mouse spermatogenesis by ... ...
| Abstract | Mammalian gametogenesis involves dramatic and tightly regulated chromatin remodeling, whose regulatory pathways remain largely unexplored. Here, we generate a comprehensive high-resolution structural and functional atlas of mouse spermatogenesis by combining in situ chromosome conformation capture sequencing (Hi-C), RNA sequencing (RNA-seq), and chromatin immunoprecipitation sequencing (ChIP-seq) of CCCTC-binding factor (CTCF) and meiotic cohesins, coupled with confocal and super-resolution microscopy. Spermatogonia presents well-defined compartment patterns and topological domains. However, chromosome occupancy and compartmentalization are highly re-arranged during prophase I, with cohesins bound to active promoters in DNA loops out of the chromosomal axes. Compartment patterns re-emerge in round spermatids, where cohesin occupancy correlates with transcriptional activity of key developmental genes. The compact sperm genome contains compartments with actively transcribed genes but no fine-scale topological domains, concomitant with the presence of protamines. Overall, we demonstrate how genome-wide cohesin occupancy and transcriptional activity is associated with three-dimensional (3D) remodeling during spermatogenesis, ultimately reprogramming the genome for the next generation. |
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| MeSH term(s) | Cell Cycle Proteins/metabolism ; Chromosomal Proteins, Non-Histone/metabolism ; Genomics/methods ; Humans ; Male ; Molecular Conformation ; Spermatogenesis/genetics ; Cohesins |
| Chemical Substances | Cell Cycle Proteins ; Chromosomal Proteins, Non-Histone |
| Language | English |
| Publishing date | 2019-09-04 |
| Publishing country | United States |
| Document type | Journal Article ; Research Support, Non-U.S. Gov't |
| ZDB-ID | 2649101-1 |
| ISSN | 2211-1247 ; 2211-1247 |
| ISSN (online) | 2211-1247 |
| ISSN | 2211-1247 |
| DOI | 10.1016/j.celrep.2019.06.037 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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