The lipidomic architecture of the mouse brain.

Mapping the adult mouse brain reveals a lipidomic architecture with fine-grained biochemical structure that aligns with functional anatomy and varies across regions and physiological states.

• Why it matters: Understanding the spatial organization of brain lipids is essential because lipid composition influences neural function and is linked to various neuropathologies, yet remains poorly characterized.
• What they did: The study mapped membrane lipids at micrometric resolution across sexes and during pregnancy, identifying lipid territories called 'lipizones' that reflect cell-type and axonal organization, and revealing heterogeneity in white matter and biochemical zonation in the choroid plexus and ventricular walls.
• The result: The findings demonstrate that brain lipid architecture can adapt to physiological changes, such as pregnancy, enabling insights into lipid roles in brain development, function, and disease.