The physiological role of APP in the activation of neuroprotective signaling mechanisms

Nelli Milosch
Accumulating evidence indicates that loss of physiological amyloid precursor protein (APP) function leads to enhanced susceptibility of neurons to cellular stress during brain aging. This study investigated the neuroprotective function of the soluble APP ectodomain sAPPα. Recombinant sAPPα protected primary hippocampal neurons and neuroblastoma cells from cell death induced by trophic factor deprivation. This protective effect was abrogated in APP-depleted neurons, but not in APLP1-, APLP2- or IGF1-R-deficient cells, indicating that expression of holo-APP is...
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