A Scalable Histological Method to Embed and Section Multiple Brains Simultaneously

Area of Science:

• Neuroscience
• Histology
• Immunohistochemistry

Background:

• Processing rodent brains for immunohistochemistry is a time-intensive bottleneck in neuroscience research.
• Current methods limit the throughput for evaluating disease models using large numbers of mouse brains.
• There is a need for efficient techniques to expedite brain tissue preparation for histological analysis.

Purpose of the Study:

• To develop a scalable and time-efficient method for embedding, sectioning, and staining multiple rodent brains.
• To facilitate comprehensive and high-quality immunohistochemistry through standardized section collection.
• To reduce the overall time required for tissue processing from perfusion to microscopy.

Main Methods:

• A scalable protocol was established for embedding and sectioning multiple mouse brains simultaneously.
• Section collection strategies were optimized to ensure consistent bregma locations for serial sections.
• Multiple brain tissue blocks were processed and stained in parallel to reduce hands-on time.

Main Results:

• The developed method significantly reduces the time required for brain tissue preparation and immunohistochemistry.
• Simultaneous staining of sections from multiple blocks led to considerable time savings.
• The protocol was successfully adapted for various mouse tissues, rat brain, and human post-mortem tissues.

Conclusions:

• This optimized histology protocol dramatically decreases processing time for rodent and human brain tissues.
• The method enables high-throughput, comprehensive immunohistochemistry with reduced time investment.
• Tissue processing from perfusion to microscopy can be completed in 10 days or less.