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The brain is an exceptionally lipid-rich organ with a very complex lipid composition. Lipids are central in several neuronal processes, including membrane formation and fusion, myelin packing, and lipid-mediated signal transmission. Lipid diversity is associated with the evolution of higher cognitive abilities in primates, is affected by neuronal activity, and is instrumental for synaptic plasticity, illustrating that lipids are not static components of synaptic membranes. Several lines of evidence suggest that the lipid composition of synapses is unique and distinct from other neuronal subcompartments. Here, we delve into the nascent field of synaptoneurolipidomics, offering an overview of current knowledge on the lipid composition of synaptic junctions and technological advances that will allow us to study the impact on synaptic function.
Ahrends et al. (Thu,) studied this question.