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Disruption of NIPBL/Scc2 in Cornelia de Lange Syndrome provokes cohesin genome-wide redistribution with an impact in the transcriptome.

Patricia GarciaRita Fernandez-HernandezAna CuadradoIgnacio CocaAntonio GómezMaria MaquedaAna Latorre-PellicerBeatriz PuisacFeliciano J RamosJuan SandovalManel EstellerJose Luis MosqueraJairo RodriguezJ PiéAna LosadaEthel Queralt
Published in: Nature communications (2021)
Cornelia de Lange syndrome (CdLS) is a rare disease affecting multiple organs and systems during development. Mutations in the cohesin loader, NIPBL/Scc2, were first described and are the most frequent in clinically diagnosed CdLS patients. The molecular mechanisms driving CdLS phenotypes are not understood. In addition to its canonical role in sister chromatid cohesion, cohesin is implicated in the spatial organization of the genome. Here, we investigate the transcriptome of CdLS patient-derived primary fibroblasts and observe the downregulation of genes involved in development and system skeletal organization, providing a link to the developmental alterations and limb abnormalities characteristic of CdLS patients. Genome-wide distribution studies demonstrate a global reduction of NIPBL at the NIPBL-associated high GC content regions in CdLS-derived cells. In addition, cohesin accumulates at NIPBL-occupied sites at CpG islands potentially due to reduced cohesin translocation along chromosomes, and fewer cohesin peaks colocalize with CTCF.
Keyphrases
  • genome wide
  • end stage renal disease
  • dna methylation
  • ejection fraction
  • newly diagnosed
  • chronic kidney disease
  • single cell
  • case report
  • rna seq
  • cell death
  • high resolution
  • oxidative stress
  • patient reported