BubbleDrive, a low-volume incubation chamber for acute brain slices

Area of Science:

• Neuroscience
• Biomedical Engineering

Background:

• Acute brain slices are crucial for neuroscience research.
• Existing incubation chambers often use large volumes, increasing costs and limiting analysis of released substances.
• Designing low-volume chambers requires balancing oxygenation and flow without slice damage.

Purpose of the Study:

• To develop and validate a novel, low-volume incubation chamber for acute brain slices.
• To address the challenge of maintaining slice viability and experimental integrity in minimal solution volumes.

Main Methods:

• Designed and 3D-printed the BubbleDrive incubation chamber with a 1.5 mL minimum volume.
• Utilized carbogen gas bubbles to create flow circulation.
• Validated the chamber's performance against conventional large-volume chambers.

Main Results:

• The BubbleDrive chamber successfully maintained oxygenation and flow without mechanically disturbing brain slices.
• Validated performance across experiments measuring extracellular diffusion, electrophysiology, and enzyme incubation.

Conclusions:

• The BubbleDrive chamber offers a viable solution for low-volume acute brain slice preparations.
• Enables cost-effective experiments and analysis of minute substances in neuroscience research.