Patient-derived iPSC-cerebral organoid modeling of the 17q11.2 microdeletion syndrome establishes CRLF3 as a critical regulator of neurogenesis

Michelle L. Wegscheid, Corina Anastasaki, Kelly A. Hartigan, Olivia M. Cobb, Jason B. Papke, Jennifer N. Traber, Stephanie M. Morris, David H. Gutmann

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Neurodevelopmental disorders are often caused by chromosomal microdeletions comprising numerous contiguous genes. A subset of neurofibromatosis type 1 (NF1) patients with severe developmental delays and intellectual disability harbors such a microdeletion event on chromosome 17q11.2, involving the NF1 gene and flanking regions (NF1 total gene deletion [NF1-TGD]). Using patient-derived human induced pluripotent stem cell (hiPSC)-forebrain cerebral organoids (hCOs), we identify both neural stem cell (NSC) proliferation and neuronal maturation abnormalities in NF1-TGD hCOs. While increased NSC proliferation results from decreased NF1/RAS regulation, the neuronal differentiation, survival, and maturation defects are caused by reduced cytokine receptor-like factor 3 (CRLF3) expression and impaired RhoA signaling. Furthermore, we demonstrate a higher autistic trait burden in NF1 patients harboring a deleterious germline mutation in the CRLF3 gene (c.1166T>C, p.Leu389Pro). Collectively, these findings identify a causative gene within the NF1-TGD locus responsible for hCO neuronal abnormalities and autism in children with NF1.

Original languageEnglish
Article number109315
JournalCell Reports
Volume36
Issue number1
DOIs
StatePublished - Jul 6 2021

Keywords

  • CRLF3
  • RAS
  • autism
  • brain development
  • cerebral organoids
  • human induced pluripotent stem cells
  • intellectual disability
  • microdeletion
  • neurofibromatosis type 1
  • neurons

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