Oligodendrocyte progenitor cell (OPC) (OPC)

Oligodendrocyte progenitor cells (OPCs) are a distinct and widely distributed population of multipotent glial cells in the central nervous system (CNS) that primarily function as the precursors to myelinating oligodendrocytes. They are identified by the expression of specific markers, most notably the platelet-derived growth factor receptor alpha (PDGFRa) and the NG2 chondroitin sulfate proteoglycan. In the healthy adult brain, OPCs maintain a state of homeostatic proliferation and serve as a reservoir for myelin repair. In diseases such as multiple sclerosis, OPCs are recruited to demyelinated lesions but often fail to complete the differentiation process into mature oligodendrocytes, leading to permanent myelin loss and axonal degeneration. Therapeutic strategies targeting OPCs focus on promoting their maturation using small molecules that modulate various signaling pathways, including muscarinic receptors, GPR17, and retinoid X receptors. Additionally, emerging evidence suggests that OPC dysfunction may play a role in psychiatric conditions like schizophrenia and major depressive disorder.

Other names

NG2-gliaOligodendrocyte precursor cellO-2A progenitor cellPolydendrocyteSynantocyte

Promotion of oligodendrocyte progenitor cell differentiation into mature myelinating oligodendrocytes; modulation of cell-surface receptors such as muscarinic receptors, GPR17, and S1P receptors to enhance remyelination.