Functional Analysis of Antipsychotics in Human iPSC-Based Neural Progenitor 2D and 3D Schizophrenia Models

Area of Science:

• Neuroscience
• Stem Cell Biology
• Pharmacology

Background:

• Schizophrenia's complex etiology and cellular drug mechanisms remain poorly understood.
• Antipsychotic drug development requires novel modeling approaches.
• Induced pluripotent stem cell (iPSC)-based models offer new avenues for studying psychiatric disorders.

Purpose of the Study:

• To develop and utilize 2D and 3D neural progenitor cell (NPC) cultures as a schizophrenia model.
• To investigate the impact of antipsychotic medications on NPCs in a schizophrenia model.
• To explore the role of cell adhesion in schizophrenia's molecular pathways.

Main Methods:

• Differentiated four human iPSC lines (two with a ZMYND11 mutation) into hippocampal NPCs.
• Cultured NPCs in 2D monolayers and 3D spheroids.
• Treated NPCs with three antipsychotic drug classes in both culture formats.

Main Results:

• NPC spheroids, but not monolayers, showed significant differences in cell number and outgrowth between schizophrenia mutant and wild-type lines.
• Antipsychotic treatments were tested on 2D and 3D NPC models.
• Findings suggest cell adhesion is crucial in schizophrenia's molecular pathways.

Conclusions:

• Three-dimensional spheroid models reveal distinct cellular behaviors in schizophrenia-associated iPSC lines.
• NPC spheroid cultures are valuable for mechanistic studies and antipsychotic drug development.
• This research enhances understanding of schizophrenia's effects on neural development and progenitor response to antipsychotics.