PUBLICATION

Motor Exit Point (MEP) Glia: Novel Myelinating Glia That Bridge CNS and PNS Myelin

Authors
Fontenas, L., Kucenas, S.
ID
ZDB-PUB-181026-18
Date
2018
Source
Frontiers in Cellular Neuroscience   12: 333 (Review)
Registered Authors
Fontenas, Laura, Kucenas, Sarah
Keywords
boundary cap cell, motor exit point glia, myelin, oligodendrocyte, schwann cell, zebrafish
MeSH Terms
none
PubMed
30356886 Full text @ Front. Cell. Neurosci.
Abstract
Oligodendrocytes (OLs) and Schwann cells (SCs) have traditionally been thought of as the exclusive myelinating glial cells of the central and peripheral nervous systems (CNS and PNS), respectively, for a little over a century. However, recent studies demonstrate the existence of a novel, centrally-derived peripheral glial population called motor exit point (MEP) glia, which myelinate spinal motor root axons in the periphery. Until recently, the boundaries that exist between the CNS and PNS, and the cells permitted to cross them, were mostly described based on fixed histological collections and static lineage tracing. Recent work in zebrafish using in vivo, time-lapse imaging has shed light on glial cell interactions at the MEP transition zone and reveals a more complex picture of myelination both centrally and peripherally.
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