Role of autophagy on bone marrow mesenchymal stem‑cell proliferation and differentiation into neurons

  • Authors:
    • Bo Li
    • Ping Duan
    • Caifang Li
    • Ying Jing
    • Xuefei Han
    • Wenhai Yan
    • Ying Xing
  • View Affiliations

  • Published online on: December 10, 2015     https://doi.org/10.3892/mmr.2015.4673
  • Pages: 1413-1419
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Abstract

The purpose of the present study was to investigate the role of autophagy on rat bone marrow mesenchymal stem cell (BMSC) proliferation, apoptosis and differentiation into neurons. After treatment with rapamycin, 3‑methyladenine (3‑MA) or chloroquine, the cell cycle, apoptosis, expression of neuron‑specific enolase (NSE) and the mean fluorescence intensity (MFI) of Notch1 in BMSCs were examined by flow cytometry. The expression of microtubule‑associated protein 2 (MAP2), Notch1 and Hes1 was investigated by western blot analysis. The results showed that after induction of autophagy using rapamycin, the proliferation of BMSCs was inhibited. Furthermore, the S‑phase population was significantly decreased compared to that in the control group (P<0.05). In addition, the percentage of NSE‑positive cells and the expression of MAP2 were significantly increased compared to those in the control group (P<0.05). The MFI of Notch1 was markedly upregulated compared to that in the control group (P<0.05). When autophagy was inhibited by 3‑MA or chloroquine, the percentage of apoptotic cells and NSE‑positive cells as well as the expression of MAP2 were markedly reduced compared to those in the control group (P<0.05). Furthermore, western blot analysis showed that Notch1 and Hes1 were decreased in the rapamycin‑treated group, while they were not affected by 3‑MA or chloroquine. The present study indicated that induction of autophagy in BMSCs decreased their S‑phase population, promoted their differentiation into neurons and promoted the expression of NSE and MAP2. The mechanisms underlying this process may be linked to the regulation of autophagy‑induced inhibition of the Notch1 signaling pathway.
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January 2016
Volume 13 Issue 2

Print ISSN: 1791-2997
Online ISSN:1791-3004

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APA
Li, B., Duan, P., Li, C., Jing, Y., Han, X., Yan, W., & Xing, Y. (2016). Role of autophagy on bone marrow mesenchymal stem‑cell proliferation and differentiation into neurons. Molecular Medicine Reports, 13, 1413-1419. https://doi.org/10.3892/mmr.2015.4673
MLA
Li, B., Duan, P., Li, C., Jing, Y., Han, X., Yan, W., Xing, Y."Role of autophagy on bone marrow mesenchymal stem‑cell proliferation and differentiation into neurons". Molecular Medicine Reports 13.2 (2016): 1413-1419.
Chicago
Li, B., Duan, P., Li, C., Jing, Y., Han, X., Yan, W., Xing, Y."Role of autophagy on bone marrow mesenchymal stem‑cell proliferation and differentiation into neurons". Molecular Medicine Reports 13, no. 2 (2016): 1413-1419. https://doi.org/10.3892/mmr.2015.4673