609-Dendritic Microenvironments for Mouse Brain Parcellation

Researchers have developed a new mouse brain atlas, termed CCF-ME, by focusing on the dendritic microenvironments of over 100,000 neurons. Unlike traditional mapping methods that rely on cell density or gene expression, this approach categorizes brain regions based on the local structural patterns and branching shapes of individual nerve cells. This method revealed a significantly more detailed anatomical organization, nearly doubling the number of identifiable subregions compared to previous standards like the Allen Common Coordinate Framework. The study discovered that these local dendritic arrangements are strong predictors of long-range connectivity, showing that neurons with similar microenvironments often link to the same distant targets. Furthermore, the atlas provides a high-resolution complement to spatial transcriptomics, offering a clearer understanding of how fine-grained brain structure relates to biological function.References: Liu Y, Zhao S, Yun Z, et al. A mouse brain atlas based on dendritic microenvironments[J]. Nature Neuroscience, 2025: 1-12.