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The oligodendrocyte lineage is responsible for myelination of the central nervous system. Post-translational modifications are known to regulate oligodendrocyte precursor cell (OPC) differentiation into mature myelinating oligodendrocytes. The role of arginine methylation during oligodendrocyte differentiation and myelination is still poorly understood. We generated mice depleted of PRMT5 in OPCs using Olig2-Cre, and these mice developed severe hypomyelination and died at the third post-natal week. PRMT5-deficient cells have lower levels of PDGFRα at the plasma membrane due to increased degradation by the Cbl E3 ligase. Mechanistically, the loss of arginine methylation at R554 of the PDGFRα intracellular domain unmasks a Cbl binding site at Y555. We observed the progressive decrease in PRMT5 during oligodendrocyte differentiation, and we show that one role of this decrease is to downregulate growth signals provided by PDGFRα to initiate oligodendrocyte differentiation and myelination. More broadly, the inhibition of PRMT5 may be used therapeutically to manipulate PDGFRα bioavailability.
Pubmed ID: 30057274 RIS Download
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Software tool to detect differential alternative splicing events from RNA-Seq data. Calculates P value and false discovery rate that difference in isoform ratio of gene between two conditions exceeds given user defined threshold. Can automatically detect and analyze alternative splicing events corresponding to all major types of alternative splicing patterns. Handles replicate RNA-Seq data from both paired and unpaired study design.
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View all literature mentionsA tool for identifying and visualizing enriched GO terms in ranked lists of genes. It can be run in one of two modes: * Searching for enriched GO terms that appear densely at the top of a ranked list of genes or * Searching for enriched GO terms in a target list of genes compared to a background list of genes.
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