Study Supported by the National Multiple Sclerosis Society Sheds Light on the Brain’s Ongoing Effort to Create Myelin-Making Cells

January 29, 2026

Researchers from Johns Hopkins Medicine discovered that the brain is continually trying to produce myelin-making cells. Supporting this intrinsic process could offer a new therapeutic avenue to enhance myelin repair in multiple sclerosis. Oligodendrocytes are specialized cells in the brain and spinal cord that produce myelin, the protective coating around nerve fibers. Their formation is dependent on successful maturation – or differentiation – of oligodendrocyte progenitor cells (OPCs). In this study, partly funded by the National MS Society, researchers at Johns Hopkins Medicine sought to understand how and when OPCs differentiate into oligodendrocytes. Using advanced imaging and gene expression methods in mice, researchers monitored OPC maturation throughout the adult brain over time. They discovered that OPCs continually try to mature into myelin-making cells; however, most of those attempts fail to produce new, healthy oligodendrocytes. Surprisingly, OPCs did not increase their production of new oligodendrocytes after extensive myelin loss. This suggests that myelin repair is determined by this steady, slow pace of OPC differentiation – a process that declines with aging and inflammation. The researchers suggest that understanding the timing mechanism within OPCs that controls how often they differentiate, and determining why most OPC maturation attempts fail, could reveal new strategies to enhance myelin production and repair in MS. Read more about the study from the Johns Hopkins Medicine press release, available here. Learn more…Finding new ways to support myelin production and repair are critical for restoring lost function , a key objective of the Pathways to Cure Research Roadmap. Read more about the myelin repair research of senior author Dr. Dwight Bergles.

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