Project description:Mutations in CHD7, encoding ATP-dependent chromodomain-helicase-DNA-binding protein 7, in CHARGE syndrome leads to multiple congenital anomalies including growth retardation, craniofacial malformations and neurological dysfunction. Currently, mechanisms underlying the CNS phenotypes remain poorly understood. Here, we show that Chd7 is a direct transcriptional target of oligodendrogenesis-promoting factors Olig2 and Brg1 and required for proper timing of CNS myelination and remyelination. Genome-occupancy analyses coupled with transcriptome profiling reveal that Chd7 cooperates with Sox10 to target the enhancers of key myelinogenic genes, and identify novel Chd7 target. Examination of Chd7 and Sox10 genomewide occupancy in differentiating oligodendrocytes
Project description:Mutations in CHD7, encoding ATP-dependent chromodomain-helicase-DNA-binding protein 7, in CHARGE syndrome leads to multiple congenital anomalies including growth retardation, craniofacial malformations and neurological dysfunction. Currently, mechanisms underlying the CNS phenotypes remain poorly understood. Here, we show that Chd7 is a direct transcriptional target of oligodendrogenesis-promoting factors Olig2 and Brg1 and required for proper timing of CNS myelination and remyelination. Genome-occupancy analyses coupled with transcriptome profiling reveal that Chd7 cooperates with Sox10 to target the enhancers of key myelinogenic genes, and identify novel Chd7 target. 4 RNA-Seq samples from P8 spinal cords of Ctrl and Chd7 cKO mice (duplicatess, Ctrl and cKO)
Project description:Chromatin Remodeler CHD7 mutated in CHARGE Syndrome Interacts with Sox10 to Regulate Timing of CNS Myelination and Remyelination [RNA-seq]
Project description:Mutations in CHD7, encoding ATP-dependent chromodomain-helicase-DNA-binding protein 7, in CHARGE syndrome leads to multiple congenital anomalies including growth retardation, craniofacial malformations and neurological dysfunction. Currently, mechanisms underlying the CNS phenotypes remain poorly understood. Here, we show that Chd7 is a direct transcriptional target of oligodendrogenesis-promoting factors Olig2 and Brg1 and required for proper timing of CNS myelination and remyelination. Genome-occupancy analyses coupled with transcriptome profiling reveal that Chd7 cooperates with Sox10 to target the enhancers of key myelinogenic genes, and identify novel Chd7 target.
Project description:Mutations in CHD7, encoding ATP-dependent chromodomain-helicase-DNA-binding protein 7, in CHARGE syndrome leads to multiple congenital anomalies including growth retardation, craniofacial malformations and neurological dysfunction. Currently, mechanisms underlying the CNS phenotypes remain poorly understood. Here, we show that Chd7 is a direct transcriptional target of oligodendrogenesis-promoting factors Olig2 and Brg1 and required for proper timing of CNS myelination and remyelination. Genome-occupancy analyses coupled with transcriptome profiling reveal that Chd7 cooperates with Sox10 to target the enhancers of key myelinogenic genes, and identify novel Chd7 target.
Project description:Impairment of oligodendrocyte (OL) myelinogenic potential, rather than inability of oligodendrocyte precursors to differentiate, is implicated in remyelination failure in demyelinating diseases such as multiple sclerosis. However, the mechanisms underlying myelinogenesis and age-related decline in remyelination remain elusive. Here, we identify a mature-OL-active transcriptional regulator Dor as a critical mediator of CNS myelination and remyelination. Genomic occupancy and transcriptomic analyses revealed that Dor interacts with Sox10 and targets the enhancers of myelinogenesis-regulatory genes including a newly identified OL-enriched nuclear factor Prr18 required for OL maturation. Metabolomic profiling showed that Dor is critical for alpha-ketoglutarate (alpha-KG) production and lipid biosynthesis. Supplementation with alpha-KG enhanced lipid biosynthesis and restored OL maturation defects in Dor-mutant mice while reversing the age-associated decline in remyelination efficiency and memory deficits in aging mice. Thus, our findings connect the OL-active Dor regulatory activity to alpha-KG-mediated lipid metabolism in mature OLs to thereby facilitate myelin production and remyelination.
Project description:Impairment of oligodendrocyte (OL) myelinogenic potential, rather than inability of oligodendrocyte precursors to differentiate, is implicated in remyelination failure in demyelinating diseases such as multiple sclerosis. However, the mechanisms underlying myelinogenesis and age-related decline in remyelination remain elusive. Here, we identify a mature-OL-active transcriptional regulator Dor as a critical mediator of CNS myelination and remyelination. Genomic occupancy and transcriptomic analyses revealed that Dor interacts with Sox10 and targets the enhancers of myelinogenesis-regulatory genes including a newly identified OL-enriched nuclear factor Prr18 required for OL maturation. Metabolomic profiling showed that Dor is critical for alpha-ketoglutarate (alpha-KG) production and lipid biosynthesis. Supplementation with alpha-KG enhanced lipid biosynthesis and restored OL maturation defects in Dor-mutant mice while reversing the age-associated decline in remyelination efficiency and memory deficits in aging mice. Thus, our findings connect the OL-active Dor regulatory activity to alpha-KG-mediated lipid metabolism in mature OLs to thereby facilitate myelin production and remyelination.
Project description:Impairment of oligodendrocyte (OL) myelinogenic potential, rather than inability of oligodendrocyte precursors to differentiate, is implicated in remyelination failure in demyelinating diseases such as multiple sclerosis. However, the mechanisms underlying myelinogenesis and age-related decline in remyelination remain elusive. Here, we identify a mature-OL-active transcriptional regulator Dor as a critical mediator of CNS myelination and remyelination. Genomic occupancy and transcriptomic analyses revealed that Dor interacts with Sox10 and targets the enhancers of myelinogenesis-regulatory genes including a newly identified OL-enriched nuclear factor Prr18 required for OL maturation. Metabolomic profiling showed that Dor is critical for alpha-ketoglutarate (alpha-KG) production and lipid biosynthesis. Supplementation with alpha-KG enhanced lipid biosynthesis and restored OL maturation defects in Dor-mutant mice while reversing the age-associated decline in remyelination efficiency and memory deficits in aging mice. Thus, our findings connect the OL-active Dor regulatory activity to alpha-KG-mediated lipid metabolism in mature OLs to thereby facilitate myelin production and remyelination.