Loss of GTF2I promotes neuronal apoptosis and synaptic reduction in human cellular models of neurodevelopment.
Cell Rep
; 43(3): 113867, 2024 Mar 26.
Article
em En
| MEDLINE
| ID: mdl-38416640
ABSTRACT
Individuals with Williams syndrome (WS), a neurodevelopmental disorder caused by hemizygous loss of 26-28 genes at 7q11.23, characteristically portray a hypersocial phenotype. Copy-number variations and mutations in one of these genes, GTF2I, are associated with altered sociality and are proposed to underlie hypersociality in WS. However, the contribution of GTF2I to human neurodevelopment remains poorly understood. Here, human cellular models of neurodevelopment, including neural progenitors, neurons, and three-dimensional cortical organoids, are differentiated from CRISPR-Cas9-edited GTF2I-knockout (GTF2I-KO) pluripotent stem cells to investigate the role of GTF2I in human neurodevelopment. GTF2I-KO progenitors exhibit increased proliferation and cell-cycle alterations. Cortical organoids and neurons demonstrate increased cell death and synaptic dysregulation, including synaptic structural dysfunction and decreased electrophysiological activity on a multielectrode array. Our findings suggest that changes in synaptic circuit integrity may be a prominent mediator of the link between alterations in GTF2I and variation in the phenotypic expression of human sociality.
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Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Síndrome de Williams
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Fatores de Transcrição TFII
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Fatores de Transcrição TFIII
Limite:
Humans
Idioma:
En
Revista:
Cell Rep
Ano de publicação:
2024
Tipo de documento:
Article