Neuronal defects in a human cellular model of 22q11.2 deletion syndrome

Themasap A. Khan, Omer Revah, Aaron Gordon, Se Jin Yoon, Anna K. Krawisz, Carleton Goold, Yishan Sun, Chul Hoon Kim, Yuan Tian, Min Yin Li, Julia M. Schaepe, Kazuya Ikeda, Neal D. Amin, Noriaki Sakai, Masayuki Yazawa, Leila Kushan, Seiji Nishino, Matthew H. Porteus, Judith L. Rapoport, Jonathan A. BernsteinRuth O’Hara, Carrie E. Bearden, Joachim F. Hallmayer, John R. Huguenard, Daniel H. Geschwind, Ricardo E. Dolmetsch, Sergiu P. Paşca

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

22q11.2 deletion syndrome (22q11DS) is a highly penetrant and common genetic cause of neuropsychiatric disease. Here we generated induced pluripotent stem cells from 15 individuals with 22q11DS and 15 control individuals and differentiated them into three-dimensional (3D) cerebral cortical organoids. Transcriptional profiling across 100 days showed high reliability of differentiation and revealed changes in neuronal excitability-related genes. Using electrophysiology and live imaging, we identified defects in spontaneous neuronal activity and calcium signaling in both organoid- and 2D-derived cortical neurons. The calcium deficit was related to resting membrane potential changes that led to abnormal inactivation of voltage-gated calcium channels. Heterozygous loss of DGCR8 recapitulated the excitability and calcium phenotypes and its overexpression rescued these defects. Moreover, the 22q11DS calcium abnormality could also be restored by application of antipsychotics. Taken together, our study illustrates how stem cell derived models can be used to uncover and rescue cellular phenotypes associated with genetic forms of neuropsychiatric disease.

Original languageEnglish
Pages (from-to)1888-1898
Number of pages11
JournalNature Medicine
Volume26
Issue number12
DOIs
StatePublished - 1 Dec 2020
Externally publishedYes

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology

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