Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA291362 | ENA |
REPOSITORIES: ENA
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Project description:The Bronx waltzer mutation in Srrm4, a gene that encodes a neuronal Ser/Arg (SR)-rich splicing factor, disrupts the expression of several alternative exons specifically in the inner ear. Here we show that the expression of SRRM3 in neurons limits the distribution of SRRM4-dependent splicing. In vitro, SRRM3 and SRRM4 regulated the same alternative exons, yet in vivo Srrm3 deficiency caused neuronal splicing alterations and motor dysfunction, indicating that SRRM3 has non-redundant functions. Mice harboring mutations in both Srrm3 and Srrm4 failed to breathe, and their neuromuscular junctions (NMJ) were malformed. Transcriptome-wide analysis revealed a large network of SRRM3/SRRM4-dependent splicing changes, including the skipping of key exons in the NMJ organizer Agrin. Furthermore, SRRM3/SRRM4 regulated gene expression through neuron-specific switches in chromatin regulatory complexes and by altering the reading frame in several mRNAs. Our findings reveal that the SRRM3/SRRM4 subfamily of SR proteins is central to regulation of the neuronal transcriptome. In this dataset, we include probe-set level data obtained from brain cortex samples. The processed data represent probe-set intensities that have been normalized to gene expression levels.
2018-07-01 | GSE71480 | GEO
Project description:The Bronx waltzer mutation in Srrm4, a gene that encodes a neuronal Ser/Arg (SR)-rich splicing factor, disrupts the expression of several alternative exons specifically in the inner ear. Here we show that the expression of SRRM3 in neurons limits the distribution of SRRM4-dependent splicing. In vitro, SRRM3 and SRRM4 regulated the same alternative exons, yet in vivo Srrm3 deficiency caused neuronal splicing alterations and motor dysfunction, indicating that SRRM3 has non-redundant functions. Mice harboring mutations in both Srrm3 and Srrm4 failed to breathe, and their neuromuscular junctions (NMJ) were malformed. Transcriptome-wide analysis revealed a large network of SRRM3/SRRM4-dependent splicing changes, including the skipping of key exons in the NMJ organizer Agrin. Furthermore, SRRM3/SRRM4 regulated gene expression through neuron-specific switches in chromatin regulatory complexes and by altering the reading frame in several mRNAs. Our findings reveal that the SRRM3/SRRM4 subfamily of SR proteins is central to regulation of the neuronal transcriptome. In this dataset, we include probe-set level data obtained from cerebellar samples. The processed data represent probe-set intensities that have been normalized to gene expression levels.
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