Stretch Injury of Human Induced Pluripotent Stem Cell Derived Neurons in a 96 Well Format.
Traumatic brain injury (TBI) is a major cause of mortality and morbidity with limited therapeutic options. Traumatic axonal injury (TAI) is an important component of TBI pathology. It is difficult to reproduce TAI in animal models of closed head injury, but in vitro stretch injury models reproduce clinical TAI pathology. Existing in vitro models employ primary rodent neurons or human cancer cell line cells in low throughput formats. This in vitro neuronal stretch injury model employs human induced pluripotent stem cell-derived neurons (hiPSCNs) in a 96 well format. Silicone membranes were attached to 96 well plate tops to create stretchable, culture substrates. A custom-built device was designed and validated to apply repeatable, biofidelic strains and strain rates to these plates. A high content approach was used to measure injury in a hypothesis-free manner. These measurements are shown to provide a sensitive, dose-dependent, multi-modal description of the response to mechanical insult. hiPSCNs transition from healthy to injured phenotype at approximately 35% Lagrangian strain. Continued development of this model may create novel opportunities for drug discovery and exploration of the role of human genotype in TAI pathology.
Department of Neurosurgery, NorthShore University HealthSystem, Evanston, IL, United States.
Sydney A
SA
Sherman
Department of Neurosurgery, NorthShore University HealthSystem, Evanston, IL, United States.
Jack K
JK
Phillips
Department of Biomedical Engineering, Columbia University, New York, NY, United States.
J Tighe
JT
Costa
Department of Biomedical Engineering, Columbia University, New York, NY, United States.
Frances S
FS
Cho
Independent Contractor New York, NY, United States.
Sevan R
SR
Oungoulian
Department of Neurosurgery, NorthShore University HealthSystem, Evanston, IL, United States.
John D
JD
Finan
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