Glymphatics and meningeal lymphatics unlock the brain-immune code
Recent discoveries of glymphatics and meningeal lymphatics have redefined our understanding of CNS immunosurveillance. Kim and Kipnis illustrate how the clearance of brain-derived antigens creates an “immune code” that, when presented by meningeal antigen-presenting cells, instructs T cells to safeguard neural homeostasis. They review how inflammation, aging, and neurodegeneration disrupt this finely tuned process and highlight emerging therapeutic opportunities.