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Updated: Oct 15, 2025

Generation and Characterization of Human Induced Pluripotent Stem Cell-derived Astrocytes Lacking Fragile X Messenger Ribonucleoprotein
Published on: June 6, 2025
A human iPSC-astroglia neurodevelopmental model reveals divergent transcriptomic patterns in schizophrenia
Attila Szabo1,2,3, Ibrahim A Akkouh4,5, Matthieu Vandenberghe4,5
1NORMENT Center of Excellence (CoE), Institute of Clinical Medicine, University of Oslo, and Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway. attila.szabo@medisin.uio.no.
This study reveals that astrocytes derived from human stem cells show distinct gene expression patterns in schizophrenia (SCZ). These SCZ astrocytes exhibit altered calcium signaling, reduced glutamate uptake, and impaired metalloproteinase activity, highlighting astroglia
Area of Science:
- Neuroscience
- Cell Biology
- Genetics
Background:
- Schizophrenia (SCZ) is linked to neurodevelopmental abnormalities.
- The specific role of astroglia in SCZ pathophysiology is not well understood.
Purpose of the Study:
- To investigate temporal astroglia differentiation patterns in SCZ using a human induced pluripotent stem cell (iPSC)-derived astrocyte model.
- To identify SCZ-specific gene expression dynamics and functional alterations in astrocytes.
Main Methods:
- Utilized RNA sequencing on iPSC-derived astrocytes to model developmental stages critical for SCZ.
- Compared astrocyte differentiation patterns with in vivo cortical fetal development.
- Analyzed gene expression, calcium signaling, glutamate uptake, and metalloproteinase activity.
Main Results:
- SCZ astrocytes showed distinct gene expression dynamics during differentiation.
- SCZ-associated genes were enriched in specific brain regions (medial prefrontal cortex, striatum, temporal lobe) and targeted VWA5A and ADAMTS19.
- SCZ astrocytes exhibited altered calcium signaling, decreased glutamate uptake, and reduced metalloproteinase activity.
Conclusions:
- Novel transcriptional dynamics in astrocyte differentiation are implicated in SCZ.
- Functional changes in SCZ astrocytes, including impaired glutamate uptake and metalloproteinase activity, may contribute to SCZ pathology.
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