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PLoS One. 2011;6(6):e21058. doi: 10.1371/journal.pone.0021058. Epub 2011 Jun 20.

SHP-2 promotes the maturation of oligodendrocyte precursor cells through Akt and ERK1/2 signaling in vitro.

Author information

1
Key Laboratory of Molecular Neurobiology, Institute of Neuroscience, Ministry of Education, Neuroscience Research Centre of Changzheng Hospital, Second Military Medical University, Shanghai, China.

Abstract

BACKGROUND:

Oligodendrocyte precursor cells (OPCs) differentiate into oligodendrocytes (OLs), which are responsible for myelination. Myelin is essential for saltatory nerve conduction in the vertebrate nervous system. However, the molecular mechanisms of maturation and myelination by oligodendrocytes remain elusive.

METHODS AND FINDINGS:

In the present study, we showed that maturation of oligodendrocytes was attenuated by sodium orthovanadate (a comprehensive inhibitor of tyrosine phosphatases) and PTPi IV (a specific inhibitor of SHP-2). It is also found that SHP-2 was persistently expressed during maturation process of OPCs. Down-regulation of endogenous SHP-2 led to impairment of oligodendrocytes maturation and this effect was triiodo-L-thyronine (T3) dependent. Furthermore, over-expression of SHP-2 was shown to promote maturation of oligodendrocytes. Finally, it has been identified that SHP-2 was involved in activation of Akt and extracellular-regulated kinases 1 and 2 (ERK1/2) induced by T3 in oligodendrocytes.

CONCLUSIONS:

SHP-2 promotes oligodendrocytes maturation via Akt and ERK1/2 signaling in vitro.

PMID:
21701583
PMCID:
PMC3118803
DOI:
10.1371/journal.pone.0021058
[Indexed for MEDLINE]
Free PMC Article

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