What it is
The authors mapped the membrane-lipid architecture of the adult mouse brain at micrometre scale, across both sexes and during pregnancy. The atlas shows that lipids form a fine-grained biochemical structure aligned with functional anatomy, clustering into territories the authors call lipizones, which partly mirror cell-type territories but also capture distal axon terminals. In pregnant mice, the white matter became metabolically activated and the cortex underwent lipizone-specific remodelling, particularly pronounced in layer 4.
Why it matters
Lipids are fundamental to synaptic transmission and signal propagation, and altered brain lipid composition is associated with common and rare neuropathologies, yet the spatial organization of the brain's lipids has remained insufficiently characterized compared with other modalities. Through lipizones, the openly available atlas reveals organizing principles of the grey matter lipidome tied to connectivity and cytoarchitecture, a new axis of oligodendrocyte heterogeneity in the white matter, and biochemical zonation in the choroid plexus and ventricular walls.
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Filed underNeurogenesis and neuroplasticity mechanisms, Lipid Membrane Structure and Behavior, Neuroscience and Neuropharmacology Research