Restoring Wnt/β-catenin signaling is a promising therapeutic strategy for Alzheimer's disease

Alzheimer's disease (AD) is an aging-related neurological disorder characterized by synaptic loss and dementia. Wnt/beta-catenin signaling is an essential signal transduction pathway that regulates numerous cellular processes including cell survival. In brain, Wnt/beta-catenin signaling is not only crucial for neuronal survival and neurogenesis, but it plays important roles in regulating synaptic plasticity and blood-brain barrier integrity and function. Moreover, activation of Wnt/beta-catenin signaling inhibits amyloid-beta production and tau protein hyperphosphorylation in the brain. Critically, Wnt/beta-catenin signaling is greatly suppressed in AD brain via multiple pathogenic mechanisms. As such, restoring Wnt/beta-catenin signaling represents a unique opportunity for the rational design of novel AD therapies.