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Updated: Feb 13, 2026

Impulsive Pressurization of Neuronal Cells for Traumatic Brain Injury Study
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Quantifying Mechanical Strain-Induced Membrane Damage in Early Neuronal Cells Using an In Vitro Traumatic Brain

Gia Kang1, Daniel Delgado1, Oren E Petel1

  • 1Department of Mechanical and Aerospace Engineering, Carleton University, Ottawa, ON, Canada.

Bio-Protocol
|February 12, 2026
PubMed
Summary
This summary is machine-generated.

This study presents a reproducible method for modeling traumatic brain injury (TBI) in human neuroblastoma cells using mechanical stretch. The model allows for studying TBI mechanisms and testing neuroprotective compounds.

Keywords:
Cell mechanicsCell stretchingHigh strain rateMechanobiologyMembrane damageOptical microscopyTraumatic brain injury

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Area of Science:

  • Neuroscience
  • Biomaterials Science
  • Cell Biology

Background:

  • Traumatic brain injury (TBI) is a significant health concern with complex cellular mechanisms.
  • Existing in vitro models often lack the physiological relevance to fully recapitulate TBI.
  • Developing reproducible models is crucial for understanding TBI pathogenesis and therapeutic development.

Purpose of the Study:

  • To establish a reproducible in vitro workflow for modeling impact-induced traumatic brain injury (TBI).
  • To utilize differentiated SH-SY5Y human neuroblastoma cells on polydimethylsiloxane (PDMS) substrates under controlled mechanical strain.
  • To provide a versatile platform for studying TBI, screening neuroprotective agents, and investigating neural mechanobiology.

Main Methods:

  • Fabrication and surface modification of deformable PDMS chambers for cellular adhesion.
  • Partial differentiation of SH-SY5Y cells using retinoic acid.
  • Induction of controlled mechanical strain to simulate mild to moderate TBI and quantitative assessment of cellular viability and recovery.

Main Results:

  • Successful implementation of a reproducible workflow for in vitro TBI modeling.
  • Demonstrated quantitative assessment of cellular viability and recovery post-mechanical insult.
  • Established a versatile platform for mechanobiology assays and neuroprotection screening.

Conclusions:

  • The developed protocol offers a robust and reproducible method for in vitro TBI modeling.
  • The stretch-induced injury model facilitates the study of cellular and molecular responses to mechanical stress in neural cells.
  • This platform supports the screening of neuroprotective compounds and the exploration of mechanotransduction pathways in TBI research.