3D AI Mapping of Mouse Brains Reveals Myelin Patterns Linked to Disease

Key Details

• 1Johns Hopkins team mapped over 10 million oligodendrocytes in each mouse brain using 3D imaging, tissue clearing, and light-sheet microscopy.
• 2Machine learning was used to automatically identify and catalog cells, creating detailed maps of cell locations and gene expression.
• 3Maps showed regional differences—areas with more direct sensory input had three times more oligodendrocytes than others.
• 4Myelin formation and oligodendrocyte addition varied by brain region and over the lifespan, following a rigid developmental program.
• 5Damaged myelin was more vulnerable near amyloid plaques in a mouse Alzheimer's model and in certain brain regions after induced injury.
• 6Data and maps are freely available for researchers, aiming to accelerate further discoveries in brain disorders.