Deposition chamber technology as building blocks for a standardized brain-on-chip framework

Area of Science:

• Neuroscience
• Biomedical Engineering
• Microfluidics

Background:

• In vitro modeling of human brain connectomes is crucial for understanding the central nervous system's structure-function relationship.
• Current models lack the ability to replicate the cellular heterogeneity of brain regions, hindering research into neurodegenerative diseases.
• Developing physiologically relevant neural structures is essential for advancing drug screening for neurological disorders.

Purpose of the Study:

• To present an innovative microfluidic design to overcome limitations in current in vitro brain models.
• To enable the recapitulation of cellular density and number heterogeneity found in different brain regions.
• To offer enhanced neuro-engineered microfluidic platforms for neuroscience research and organ-on-a-chip applications.

Main Methods:

• Development of a microfluidic device for controlled and uniform cellular population deposition.
• Utilizing variable-sized and shaped plating chambers for tailored cell seeding.
• Fine-tuning hydrodynamic resistance and cell deposition rates to control neuron seeding from thousands to millions.

Main Results:

• The microfluidic design successfully allows for controlled seeding of diverse cellular populations.
• Neuron numbers in plating chambers can be precisely adjusted, ranging from 1,000 to 1,000,000.
• The device enables the creation of neurofluidic platforms with enhanced structural architectures.

Conclusions:

• The innovative microfluidic device significantly enhances in vitro brain models by addressing cellular heterogeneity.
• This technology provides a novel platform for studying human neurodegenerative diseases, including Alzheimer's and Parkinson's.
• The developed neuro-engineered platforms serve as advanced organ-on-a-chip models for neuroscience research.