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Titel: A subset of OPCs do not express Olig2 during development which can be increased in the adult by brain injuries and complex motor learning
VerfasserIn: Fang, Li-Pao
Liu, Qing
Meyer, Erika
Welle, Anna
Huang, Wenhui
Scheller, Anja
Kirchhoff, Frank
Bai, Xianshu
Sprache: Englisch
Titel: Glia
Bandnummer: 71 (2023)
Heft: 2
Seiten: 415-430
Verlag/Plattform: Wiley
Erscheinungsjahr: 2022
Freie Schlagwörter: acute brain injury
Olig2
oligodendrocyte precursor cells
platelet derived growth factor receptor alpha
proliferation
DDC-Sachgruppe: 500 Naturwissenschaften
610 Medizin, Gesundheit
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Oligodendrocyte precursor cells (OPCs) are uniformly distributed in the mammalian brain; however, their function is rather heterogeneous in respect to their origin, location, receptor/channel expression and age. The basic helix–loop–helix transcription factor Olig2 is expressed in all OPCs as a pivotal determinant of their differentiation. Here, we identified a subset (2%–26%) of OPCs lacking Olig2 in various brain regions including cortex, corpus callosum, CA1 and dentate gyrus. These Olig2 negative (Olig2neg) OPCs were enriched in the juvenile brain and decreased subsequently with age, being rarely detectable in the adult brain. However, the loss of this population was not due to apoptosis or microglia-dependent phagocytosis. Unlike Olig2pos OPCs, these subset cells were rarely labeled for the mitotic marker Ki67. And, accordingly, BrdU was incorporated only by a three-day long-term labeling but not by a 2-hour short pulse, suggesting these cells do not proliferate any more but were derived from proliferating OPCs. The Olig2neg OPCs exhibited a less complex morphology than Olig2pos ones. Olig2neg OPCs preferentially remain in a precursor stage rather than differentiating into highly branched oligodendrocytes. Changing the adjacent brain environment, for example, by acute injuries or by complex motor learning tasks, stimulated the transition of Olig2pos OPCs to Olig2neg cells in the adult. Taken together, our results demonstrate that OPCs transiently suppress Olig2 upon changes of the brain activity.
DOI der Erstveröffentlichung: 10.1002/glia.24284
URL der Erstveröffentlichung: https://onlinelibrary.wiley.com/doi/full/10.1002/glia.24284
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-388912
hdl:20.500.11880/35087
http://dx.doi.org/10.22028/D291-38891
ISSN: 1098-1136
0894-1491
Datum des Eintrags: 2-Feb-2023
Bezeichnung des in Beziehung stehenden Objekts: Supporting Information
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Fakultät: M - Medizinische Fakultät
NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: M - Physiologie
NT - Biowissenschaften
Professur: M - Prof. Dr. Frank Kirchhoff
NT - Prof. Dr. Jörn Walter
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes



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