Abstract
The myelin sheath, produced by oligodendrocytes in the central nervous system, provides essential electrical insulation to neurons, but also is critical for viability of neurons. Both the protein and lipid composition of this fascinating membrane is unique. Here the focus is on the sphingolipids that are highly abundant in myelin and, in particular, how they are produced. This review discusses how sphingolipid metabolism is regulated. In particular the subcellular localization of lipid metabolic enzymes is discussed and how inter-organelle transport can affect the metabolic routes that sphingolipid precursors take. Understanding the regulation of sphingolipid metabolism in formation of the myelin membrane will have a significant impact on strategies to treat demyelinating diseases.
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