The physiological and pathological effects of sphingolipid metabolism and signaling in the central nervous system.

Sphingolipids are essential, complex lipids that are abundant in the cell membranes of eukaryotic cells, particularly concentrated in the myelin and neuronal membranes of the central nervous system (CNS). These lipids are crucial components of the cell membrane, affecting their structure and fluidity, and thus regulating various biological processes, including signal transduction, cell differentiation, apoptosis, and autophagy. The metabolic pathways of sphingolipids are highly complex and conserved, and this metabolic process can produce multiple metabolites. Metabolites such as ceramide (Cer) and sphingosine-1-phosphate (S1P) are vital in CNS signaling, affecting neurodevelopment, myelination, and synaptic plasticity. Thus, disruption of sphingolipid metabolism is closely related to neurological disorders. This article provides the latest studies concerning the known features of sphingolipid and sphingolipid metabolism, highlighting its physiological and pathological roles in the CNS.