Transcriptomics

Dataset Information

0

Genome organization around nuclear speckles drives mRNA splicing efficiency


ABSTRACT: The nucleus is highly organized such that factors involved in transcription and processing of distinct classes of RNA are organized within specific nuclear bodies. One example is the nuclear speckle, which is defined by high concentrations of protein and non-coding RNA regulators of pre-mRNA splicing. What functional role, if any, speckles might play in the process of mRNA splicing remains unknown. Here we show that genes localized near nuclear speckles display higher spliceosome concentrations, increased spliceosome binding to their pre-mRNAs, and higher co-transcriptional splicing levels relative to genes that are located farther from nuclear speckles. We show that directed recruitment of a pre-mRNA to nuclear speckles is sufficient to increase mRNA splicing levels. Finally, we show that gene organization around nuclear speckles is highly dynamic with differential localization between cell types corresponding to differences in splicing efficiency. Together, our results integrate the longstanding observations of nuclear speckles with the biochemistry of mRNA splicing and demonstrate a critical role for dynamic 3D spatial organization of genomic DNA in driving spliceosome concentrations and controlling the efficiency of mRNA splicing.

ORGANISM(S): Mus musculus Homo sapiens

PROVIDER: GSE247833 | GEO | 2024/03/22

REPOSITORIES: GEO

Dataset's files

Source:
Action DRS
Other
Items per page:
1 - 1 of 1

Similar Datasets

2021-05-25 | PXD023942 | Pride
| PRJNA1040796 | ENA
2024-09-05 | GSE255206 | GEO
2024-09-05 | GSE255207 | GEO
2024-02-06 | GSE254080 | GEO
2024-02-06 | GSE254060 | GEO
2013-10-22 | E-GEOD-44219 | biostudies-arrayexpress
2024-04-26 | PXD049117 | Pride
2023-03-03 | PXD016607 | Pride
2011-12-22 | E-GEOD-28672 | biostudies-arrayexpress