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Brain Dev. 2012 Sep;34(8):674-84. doi: 10.1016/j.braindev.2011.10.011. Epub 2011 Nov 25.

Involvement of SHP2 in focal adhesion, migration and differentiation of neural stem cells.

Author information

1
Department of Anatomy, Faculty of Medicine, Chung Shan Medical University, Taichung, Taiwan, ROC.

Abstract

OBJECTIVES:

SHP2 (Src-homology-2 domain-containing protein tyrosine phosphatase) plays an important role in cell adhesion, migration and cell signaling. However, its role in focal adhesion, differentiation and migration of neural stem cells is still unclear.

METHODS:

In this study, rat neurospheres were cultured in suspension and differentiated neural stem cells were cultured on collagen-coated surfaces.

RESULTS:

The results showed that p-SHP2 co-localized with focal adhesion kinase (FAK) and paxillin in neurospheres and in differentiated neural precursor cells, astrocytes, neurons, and oligodendrocytes. Suppression of SHP2 activity by PTP4 or siRNA-mediated SHP2 silencing caused reduction in the cell migration and neurite outgrowth, and thinning of glial cell processes. Differentiation-induced activation of FAK, Src, paxillin, ERK1/2, and RhoA was decreased by SHP2 inactivation.

CONCLUSIONS:

These results indicate that SHP2 is recruited in focal adhesions of neural stem cells and regulates focal adhesion formation. SHP2-mediated regulation of neural differentiation and migration may be related to formation of focal adhesions and RhoA and ERK1/2 activation.

PMID:
22118986
DOI:
10.1016/j.braindev.2011.10.011
[Indexed for MEDLINE]

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