A study has found that the protein Mfsd2a, responsible for transporting molecules containing omega-3 fatty acids, plays a crucial role in regulating the development of cells that produce the myelin sheath, which is damaged in multiple sclerosis (MS). The absence of Mfsd2a in mice resulted in immature myelin-producing cells and reduced levels of omega-3 fatty acids, leading to a decline in myelination. The study suggests that omega-3 molecules play a critical role in directing the development of oligodendrocytes, and this discovery may pave the way for therapies and dietary supplements based on omega-3 to retain myelin in the aging brain and treat neurological disorders arising from reduced myelination.
MS involves immune-mediated damage to the myelin sheath, which is predominantly composed of lipids and specialized proteins. The study’s authors emphasize the importance of developing therapies to improve myelination in both normal aging and neurological diseases like MS and Alzheimer’s disease. By elucidating the role of Mfsd2a in myelination, the researchers hope to explore the potential of dietary supplements containing omega-3 fatty acids to enhance brain myelination and cognitive function in aging individuals and those with neurodegenerative diseases.