Modeling CADASIL vascular pathologies with patient-derived induced pluripotent stem cells

Protein Cell. 2019 Apr;10(4):249-271. doi: 10.1007/s13238-019-0608-1. Epub 2019 Feb 18.

Abstract

Cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) is a rare hereditary cerebrovascular disease caused by a NOTCH3 mutation. However, the underlying cellular and molecular mechanisms remain unidentified. Here, we generated non-integrative induced pluripotent stem cells (iPSCs) from fibroblasts of a CADASIL patient harboring a heterozygous NOTCH3 mutation (c.3226C>T, p.R1076C). Vascular smooth muscle cells (VSMCs) differentiated from CADASIL-specific iPSCs showed gene expression changes associated with disease phenotypes, including activation of the NOTCH and NF-κB signaling pathway, cytoskeleton disorganization, and excessive cell proliferation. In comparison, these abnormalities were not observed in vascular endothelial cells (VECs) derived from the patient's iPSCs. Importantly, the abnormal upregulation of NF-κB target genes in CADASIL VSMCs was diminished by a NOTCH pathway inhibitor, providing a potential therapeutic strategy for CADASIL. Overall, using this iPSC-based disease model, our study identified clues for studying the pathogenic mechanisms of CADASIL and developing treatment strategies for this disease.

Keywords: CADASIL; NF-κB; NOTCH; iPSC; vascular smooth muscle.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • CADASIL / metabolism*
  • Cells, Cultured
  • Endothelial Cells / pathology*
  • Heterografts
  • Heterozygote
  • Humans
  • Induced Pluripotent Stem Cells* / metabolism
  • Induced Pluripotent Stem Cells* / pathology
  • Mice, Inbred NOD
  • Models, Biological*
  • Muscle, Smooth, Vascular* / metabolism
  • Muscle, Smooth, Vascular* / pathology
  • Mutation
  • NF-kappa B / metabolism
  • Receptor, Notch3 / genetics*

Substances

  • NF-kappa B
  • NOTCH3 protein, human
  • Receptor, Notch3