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A Guide to Generating and Using hiPSC Derived NPCs for the Study of Neurological Diseases
Published on: February 21, 2015
Transcriptomic signatures and neural cell composition in schizophrenia iPSC-derived neuron cultures
Bárbara S Casas1, Jorge Zúñiga2, Sebastián Arizábalos2
1Institute of Biomedical Sciences, Faculty of Medicine, Universidad Andrés Bello, Chile; Millennium Nucleus of Neuroepigenetics and Plasticity, EpiNeuro, Chile; Department of Biochemistry and Molecular Biology, Faculty of Chemical and Pharmaceutical Sciences, Universidad de Chile, Chile.
Schizophrenia (SZ) patient iPSC-derived neurons show altered cellular composition, with more immature neurons and fewer astrocytes compared to healthy controls (HC). This shift impacts gene expression, suggesting a role in disease phenotypes.
Area of Science:
- Neuroscience
- Genetics
- Stem Cell Biology
Background:
- Schizophrenia is a neurodevelopmental disorder impacting neuronal function and connectivity.
- Induced pluripotent stem cell (iPSC)-derived neurons are a key model for studying schizophrenia (SZ).
- Astrocyte presence in iPSC cultures can confound molecular and functional analyses.
Purpose of the Study:
- To investigate cellular composition differences between SZ and healthy control (HC) iPSC-derived neuronal cultures.
- To determine how cellular variations affect transcriptomic interpretations in schizophrenia research.
- To explore the impact of neuronal-glial balance shifts on disease phenotypes.
Main Methods:
- Induced pluripotent stem cells (iPSC) from SZ patients and HC were differentiated into neuronal cultures.
- Immunostaining, RNA sequencing, transcriptomic deconvolution, and flow cytometry were employed for characterization.
- Gene ontology (GO) and SynGO analyses were performed to interpret transcriptomic data.
Main Results:
- Differential gene expression was identified in SZ cultures, enriched in neurodevelopment and synaptic function pathways.
- Transcriptomic deconvolution revealed higher enrichment of immature neurons in SZ cultures versus astrocytes in HC cultures.
- Flow cytometry confirmed increased NeuN-positive nuclei (neuronal marker) in SZ-derived cultures.
Conclusions:
- Schizophrenia iPSC-derived neuronal cultures exhibit distinct cellular compositions compared to HC.
- Alterations in the neuronal-glial balance may contribute to schizophrenia-associated phenotypes.
- Understanding cellular composition is crucial for accurate transcriptomic interpretation in iPSC-based disease modeling.
