ATP1A3 as a target for isolating neuron-specific extracellular vesicles from human brain and biofluids.

ABSTRACT: Neuron-derived extracellular vesicles (NDEVs) are potential biomarkers of neurological diseases although their reliable molecular target is not well established. Here, we demonstrate that ATPase Na⁺/K⁺ transporting subunit alpha 3 (ATP1A3) is abundantly expressed in extracellular vesicles (EVs) isolated from induced human neuron, brain, cerebrospinal fluid, and plasma in comparison with the presumed NDEV markers NCAM1 and L1CAM by using super-resolution microscopy and biochemical assessments. Proteomic analysis of immunoprecipitated ATP1A3⁺ brain-derived EVs shows higher enrichment of synaptic markers and cargo proteins relevant to Alzheimer's disease (AD) compared to NCAM1⁺ or LICAM⁺ EVs. Single particle analysis shows the elevated am

SUBMITTER: You Y 

PROVIDER: S-EPMC10881047 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature