Brain HealthFirst Spatial Atlas of Human Brain Vasculature Exposes Stroke and Dementia Targets
Scientists at UCSF have created the first comprehensive spatial atlas of the human brain's blood vessel system, profiling over 314,000 individual cell transcriptomes and mapping nearly 1.5 million cells across the temporal cortex and hippocampus. They discovered that brain vascular cells are not randomly distributed but organize into precise micro-communities called vascular cell ensembles. These ensembles include endothelial cells, mural cells, fibroblasts, and immune cells, all arranged along the arterial-to-venous axis to perform location-specific jobs like regulating blood flow, maintaining the blood-brain barrier, and monitoring for pathogens. Crucially, the team overlaid genetic risk data for neurological diseases onto these ensembles, pinpointing which specific cell communities are most vulnerable in conditions like small vessel disease and stroke, and identifying potential drug targets within them.
