Presynaptic accumulation of APP-CTFβ may contribute to synaptic dysfunction in Alzheimer’s disease
It is shown that endogenous APP and its proteolytic C-terminal fragments (APP-CTFs), the precursors of amyloid-β (Aβ), are enriched at excitatory synapses, and that APP processing generates functionally distinct intermediates at the synapse, i.e. presynaptic APP-CTFβ, which can accumulate in the active zone of excitato...