Abstract
Schwann cell precursors differentiating into a myelinating phenotype are critical for peripheral nerve development and regeneration. However, little is known about the underlying molecular mechanisms of Schwann cell differentiation. In the present study, we performed a cyclic adenosine monophosphate-induced Schwann cell differentiation model in vitro. Western blot analysis showed that p27Kip1 expression was upregulated during the differentiation of Schwann cell, while the inhibition of p27Kip1 expression by short hairpin RNA-mediated knockdown significantly abolished the expression of promyelinating markers and the alteration of cellular morphology. In addition, immunofluorescence revealed a decrease of p27Kip1 nuclear staining and a concomitant increase of cytoplasmic staining in differentiated Schwann cells. In summary, our data indicated that p27Kip1 was a positive regulator of Schwann cell differentiation in vitro.
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Abbreviations
- cAMP:
-
Cyclic adenosine monophosphate
- KPC:
-
Kip1 ubiquitylation-promoting complex
- SKP2:
-
S-phase kinase-associated protein 2
- DMEM:
-
Dulbecco’s modified Eagle’s medium
- PBS:
-
Phosphate-buffered saline
- SCs:
-
Schwann cells
- GAPDH:
-
Glyceraldehyde-3-phosphate dehydrogenase
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (nos. 30300099, 30770488, and 30870320), the Natural Science Foundation of Jiangsu province (nos. BK2009161, BK2009156, and BK2009157), the Natural Science Foundation of Jiangsu Colleges and Universities Grant (09KJD310005), and The Society and Technology Grew Project of Nantong City (S2008020).
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Li, H., Yang, H., Liu, Y. et al. The Cyclin-Dependent Kinase Inhibitor p27Kip1 is a Positive Regulator of Schwann Cell Differentiation In Vitro. J Mol Neurosci 45, 277–283 (2011). https://doi.org/10.1007/s12031-011-9518-2
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DOI: https://doi.org/10.1007/s12031-011-9518-2