AI Article Synopsis
- Mapping single-neuron projections in the hippocampus (HIP) is crucial to grasping how the brain's connectivity and functions work.
- Researchers reconstructed over 10,000 single-neuron projectomes and identified 43 distinct subtypes based on their projection patterns.
- The study revealed that projection characteristics vary based on neuron location in the HIP and highlighted wiring diagrams for neurons connecting within the HIP and to other brain regions, informing us about their functional roles.
Article Abstract
Mapping single-neuron projections is essential for understanding brain-wide connectivity and diverse functions of the hippocampus (HIP). Here, we reconstructed 10,100 single-neuron projectomes of mouse HIP and classified 43 projectome subtypes with distinct projection patterns. The number of projection targets and axon-tip distribution depended on the soma location along HIP longitudinal and transverse axes. Many projectome subtypes were enriched in specific HIP subdomains defined by spatial transcriptomic profiles. Furthermore, we delineated comprehensive wiring diagrams for HIP neurons projecting exclusively within the HIP formation (HPF) and for those projecting to both intra- and extra-HPF targets. Bihemispheric projecting neurons generally projected to one pair of homologous targets with ipsilateral preference. These organization principles of single-neuron projectomes provide a structural basis for understanding the function of HIP neurons.
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| http://dx.doi.org/10.1126/science.adj9198 | DOI Listing |
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