10 research outputs found
Proteins implicated in Alzheimer disease. The role of FE65, a new adapter which binds to beta-amyloid precursor protein.
The WW domain of neural protein Fe65 interacs with proline-rich motifs in Mena, The mammalian homolog of Drosophila Enabled
FE65 and FE65L1 share common synaptic functions and genetically interact with the APP family in neuromuscular junction formation
Amyloid precursor protein modulates Nav1.6 sodium channel currents through a Go-coupled JNK pathway
Amyloid precursor protein promotes post-developmental neurite arborization in the Drosophila brain
The mechanisms regulating the outgrowth of neurites during development, as well as after injury, are key to the understanding of the wiring and functioning of the brain under normal and pathological conditions. The amyloid precursor protein (APP) is involved in the pathogenesis of Alzheimer's disease (AD). However, its physiological role in the central nervous system is not known. Many physical interactions between APP and intracellular signalling molecules have been described, but their functional relevance remains unclear. We show here that human APP and Drosophila APP-Like (APPL) can induce postdevelopmental axonal arborization, which depends critically on a conserved motif in the C-terminus and requires interaction with the Abelson (Abl) tyrosine kinase. Brain injury induces APPL upregulation in Drosophila neurons, correlating with increased post-traumatic mortality in appl(d) mutant flies. Finally, we also found interactions between APP and the JNK stress kinase cascade. Our findings suggest a role for APP in axonal outgrowth after traumatic brain injury