3D In Vitro Neuron on a Chip for Probing Calcium Mechanostimulation

Area of Science:

• Biomedical Engineering
• Neuroscience
• Biomaterials Science

Background:

• Tissue on a chip systems offer promise for mimicking physiological responses.
• Neuron-based systems are crucial for studying neurological responses and reducing animal testing.
• Mechanical forces are increasingly recognized as critical factors in neurological conditions like traumatic brain injury and pain.

Purpose of the Study:

• To develop a 3D Nerve Integrated Tissue on a Chip (NITC) system capable of applying controlled mechanical stimulation.
• To investigate neural responses to mechanical stimuli in a more physiologically relevant 3D environment.
• To advance the study of neuromechanics and its implications for neurological disorders.

Main Methods:

• A 3D Nerve Integrated Tissue on a Chip (NITC) system was engineered.
• A Mechanical Excitation Testbed (MET) System was utilized to apply external mechanical stimulation.
• PC12 cells, differentiated with nerve growth factor, were cultured in 3D scaffolds and labeled with Fluo-4-AM to monitor calcium responses.

Main Results:

• The study successfully demonstrated the capability to impose mechanical stimulation on a 3D neural tissue model.
• Calcium responses of differentiated PC12 cells within the 3D NITC system under mechanical stress were captured and analyzed.
• This 3D approach provides a more realistic platform for studying neural mechanotransduction compared to 2D systems.

Conclusions:

• The developed 3D NITC system with mechanical stimulation provides a powerful tool for studying neural responses to mechanical forces.
• This technology has significant implications for advancing research in tissue-on-a-chip systems, biomaterials, and neuromechanics.
• The findings pave the way for future personalized strategies in neurological studies and treatment development.