High throughput 3D gel-based neural organotypic model for cellular assays using fluorescence biosensors

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Abstract

Three-dimensional (3D) organotypic models that capture native-like physiological features of tissues are being pursued as clinically predictive assays for therapeutics development. A range of these models are being developed to mimic brain morphology, physiology, and pathology of neurological diseases. Biofabrication of 3D gel-based cellular systems is emerging as a versatile technology to produce spatially and cell-type tailored, physiologically complex and native-like tissue models. Here we produce 3D fibrin gel-based functional neural co-culture models with human-iPSC differentiated dopaminergic or glutamatergic neurons and astrocytes. We further introduce genetically encoded fluorescence biosensors and optogenetics activation for real time functional measurements of intracellular calcium and levels of dopamine and glutamate neurotransmitters, in a high-throughput compatible plate format. We use pharmacological perturbations to demonstrate that the drug responses of 3D gel-based neural models are like those expected from in-vivo data, and in some cases, in contrast to those observed in the equivalent 2D neural models.

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Kundu, S., Boutin, M. E., Strong, C. E., Voss, T., & Ferrer, M. (2022). High throughput 3D gel-based neural organotypic model for cellular assays using fluorescence biosensors. Communications Biology, 5(1). https://doi.org/10.1038/s42003-022-04177-z

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