The BRAIN Initiative Cell Census Consortium: Lessons Learned toward Generating a Comprehensive Brain Cell Atlas

Area of Science:

• Neuroscience
• Genomics
• Anatomical Mapping

Background:

• Understanding neural circuits and behavior requires detailed knowledge of neuronal cell types and connectivity.
• The BRAIN Initiative Cell Census Consortium aimed to address this need through technological development.

Purpose of the Study:

• To review the experiences of ten pilot projects in developing, validating, and scaling genomic and anatomical mapping technologies.
• To lay the groundwork for creating comprehensive whole-brain cell atlases.

Main Methods:

• Utilizing emerging genomic technologies for cell type characterization.
• Employing advanced anatomical mapping techniques to determine neuronal connectivity.
• Validating and scaling these technologies across multiple species and developmental stages.

Main Results:

• Successful development and validation of key technologies for neuronal inventory.
• Demonstrated feasibility of scaling these methods for large-scale brain mapping.
• Established a foundation for future whole-brain cell atlas generation.

Conclusions:

• The pilot projects provide essential technological and methodological foundations for future brain mapping efforts.
• This work paves the way for creating detailed neuronal inventories and understanding neural circuit function.