UC Irvine News reported that University of California, Irvine researchers have completed a massive mapping project involving approximately eight million cells located within deep human brain regions. In the course of this detailed examination, the University of California, Irvine researchers successfully identified sixty distinct cell types located specifically in the basal ganglia. The comprehensive study detailing these structural discoveries was published by University of California, Irvine's Center for Neural Circuit Mapping in the prominent scientific publication Cell.
The ambitious research project was made possible through major financial backing provided by the National Institutes of Health, which funded the undertaking through the Brain Research Through Advancing Innovative Neurotechnologies Initiative. Furthermore, the National Institute of Mental Health continues to support the scientific work under award number UM1MH130994. Guiding the institution's role in these investigations, Xiangmin Xu directs the University of California, Irvine participation in the project as Chancellor's Professor.
Highlighting the intricate nature of mapping the human brain, Xiangmin Xu told UC Irvine News, "Knowing which cells exist in the brain is only part of the story." Elaborating on the spatial relationships of the cellular structures, Xu also told UC Irvine News, "We also need to know where those cells are located, which other cells surround them and how they’re organized within specific brain structures."
To accomplish the precise cellular mapping of approximately eight million cells in deep human brain regions, the UC Irvine-led team deployed advanced scientific methodologies. Specifically, the researchers utilized spatial transcriptomics, incorporating both MERFISH+ and Stereo-seq technologies to examine the tissue architecture. For the analysis, the researchers carefully examined brain samples that were obtained from four neurotypical donors, ensuring a standardized approach to mapping the basal ganglia and identifying the sixty distinct cell types.
This scientific milestone was achieved through collaborative efforts involving multiple institutions and key personnel. Bogdan Bintu served as a key collaborator representing UC San Diego, working alongside the University of California, Irvine researchers to advance the initiative. Following the publication of the initial findings by University of California, Irvine's Center for Neural Circuit Mapping in Cell, the academic institution is already looking ahead. The University of California, Irvine has a second lead study currently planned for publication in Cell Systems, ensuring that the work funded by the National Institutes of Health and supported by the National Institute of Mental Health will continue to expand our understanding of human brain architecture.
