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Related Concept Videos

EPS and iPS Cells in Disease Research01:21

EPS and iPS Cells in Disease Research

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Embryonic and induced pluripotent stem cells are excellent models for disease research because of their ability to self-renew and differentiate into most cell types. Somatic cells from a patient are isolated and reprogrammed into induced pluripotent stem cells or iPSCs. These iPSCs are later differentiated into the desired cell type, which mirrors the diseased cell of the patient. In this way, disease models have been created for investigating diseases such as Down syndrome, type I diabetes,...
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Related Experiment Video

Updated: Apr 9, 2026

Synaptic Microcircuit Modeling with 3D Cocultures of Astrocytes and Neurons from Human Pluripotent Stem Cells
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Modelling synaptic dysfunction in childhood dementia using human iPSC-derived cortical networks.

Paris Mazzachi1,2, Ella McDonald1,2, Zarina Greenberg1,2

  • 1Laboratory for Human Neurophysiology and Genetics, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, SA, Australia.

Nature Communications
|April 7, 2026
PubMed
Summary
This summary is machine-generated.

Childhood dementia, like Mucopolysaccharidosis Type IIIA (MPS IIIA), shows synaptic dysfunction. Our study reveals excitation/inhibition imbalances in patient neurons, highlighting potential drug targets for cognitive improvement.

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Area of Science:

  • Neuroscience
  • Stem Cell Biology
  • Genetics

Background:

  • Synaptic homeostasis alterations are implicated in brain disorders.
  • Childhood dementia, specifically Mucopolysaccharidosis Type IIIA (MPS IIIA), exhibits poorly understood synaptic dysfunction.
  • MPS IIIA is a common form of childhood-onset dementia.

Purpose of the Study:

  • To investigate synaptic dysfunction in human cortical circuits derived from MPS IIIA patients.
  • To identify neurophysiological phenotypes associated with childhood dementia using in vitro models.
  • To support drug discovery targeting synaptic dysfunction for cognitive improvement in MPS IIIA.

Main Methods:

  • Generation of human cortical circuits from induced pluripotent stem cells (iPSCs) of MPS IIIA donors.
  • Assessment of action potential firing capacity and neuronal morphology.
  • Long-term neural maturation studies to analyze network dynamics and gene expression.

Main Results:

  • MPS IIIA neurons exhibit normal action potential firing and morphology initially.
  • Long-term maturation reveals excitation/inhibition imbalances due to hyperactive excitatory synapses.
  • Disrupted network dynamics and dysregulated gene expression linked to synaptic homeostasis were observed.

Conclusions:

  • In vitro human neural models effectively detect neurophysiological phenotypes in childhood dementias.
  • Synaptic dysfunction, particularly excitation/inhibition imbalance, is a key feature of MPS IIIA.
  • Targeting synaptic dysfunction offers a promising strategy for improving cognition in MPS IIIA and related disorders.