From:  Unlocking the potential of circulating small extracellular vesicles in neurodegenerative disease through targeted biomarkers and advancements in biosensing

 Summary of potential sEV-associated protein biomarkers for AD

AD sEVs protein biomarkersExpressionReferences
Aβ42↑[39, 56, 58, 59]
P-T181-tau↑[56, 58]
P-S396-tau↑[39, 56, 58, 59]
T-tau↑[39, 58, 59]
β-site APP cleaving enzyme 1 (BACE 1)↑[39]
γ-Secretase↑[39]
sAPPβ↑[39]
sAPPα↑[39]
Glial-derived neurotrophic factor (GDNF)↓[39]
NRGN↓[57, 59]
Repressor element 1-silencing transcription factor (REST)↓[59]
GAP43↓[57]
Synaptotagmin 1↓[57]
SNAP25↓[57]

↑: the expression of the protein is higher in sEVs collected from samples of AD patients compared to that collected from controls; ↓: the expression of the protein is lower in sEVs collected from samples of AD patients compared to that collected from controls