Meningeal lymphatics as a therapeutic target for neurodegenerative disorders.

Advancements in visualization methods have brought the meningeal lymphatic system (MLS) into the spotlight. The meningeal lymphatic vessels (mLVs) play a vital role in draining cerebrospinal fluid and immune cells, acting as a central hub for immune surveillance in the brain. Age-related morphological and functional declines of mLVs suggest their involvement in the pathogenesis of neurodegenerative disorders (NDDs). In this article, we summarize key discoveries about the MLS over the past decade, highlight the neuro-immune crosstalk in the meninges, and discuss the role of mLVs in both brain homeostasis and neurodegeneration. As a critical regulator of brain function and a potential therapeutic target, the MLS offers a promising avenue for the diagnosis and treatment of NDDs, particularly Alzheimer's Disease.