Neuronal membrane lipid raft (NMLR)

Neuronal membrane lipid rafts are specialized, highly ordered microdomains within the neuronal plasma membrane, characterized by an enrichment of cholesterol, sphingolipids, and scaffolding proteins such as flotillins (Pike, 2006, J Lipid Res). These domains function as dynamic signaling hubs that compartmentalize and organize various proteins, including neurotransmitter receptors, ion channels, and G-protein coupled receptors, thereby regulating synaptic transmission and plasticity (Sebastião et al., 2013, Front Physiol). In neurodegenerative diseases like Alzheimer's, lipid rafts serve as the primary site for the amyloidogenic processing of amyloid precursor protein (APP) by beta- and gamma-secretases, leading to the accumulation of amyloid-beta plaques (Ehehalt et al., 2003, J Cell Biol). Consequently, these microdomains are considered therapeutic targets for drugs that aim to alter membrane composition, such as statins or polyunsaturated fatty acids, to disrupt the assembly of toxic protein aggregates or modulate aberrant signaling (Simons & Gerl, 2010, Nat Rev Mol Cell Biol). However, because lipid rafts are ubiquitous across various tissues, achieving brain-specific modulation remains a significant pharmacological challenge.

Other names

Lipid raftsMembrane microdomainsDetergent-resistant membranesCholesterol-rich microdomainsSynaptic lipid rafts

Cholesterol depletion and structural disruption of membrane microdomains to modulate protein-protein interactions and signaling cascades.