Neural Regeneration Research ›› 2012, Vol. 7 ›› Issue (34): 2663-2672.doi: 10.3969/j.issn.1673-5374.2012.34.003

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Umbilical cord-derived mesenchymal stem cells retain immunomodulatory and anti-oxidative activities after neural induction

Jianjun Li1, Dong Li2, Xiuli Ju2, Qing Shi2, Dakun Wang2, Fengcai Wei3   

  1. Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan 250012, Shandong Province, China
  • Received:2012-09-29 Revised:2012-11-16 Online:2012-12-05 Published:2012-11-16
  • Contact: Dong Li, M.D., Associate professor, Cryomedicine Laboratory, Qilu Hospital, Shandong University, Jinan 250012, Shandong Province, China lidong73@sdu.edu.cn
  • About author:Jianjun Li★, Master, Associate chief physician, Department of Anesthesiology, Qilu Hospital, Shandong University, Jinan 250012, Shandong Province, China
  • Supported by:

    This work was supported by grants from the Shandong Province Science and Technology Program, Grant No. 2011GSF11801; and the Innovation Fund Project of Shandong University, Grant No. 2012ZD023; the Major State Basic Research Development Program, Grant No. 2012CB966504.

Abstract:

The immunomodulatory and anti-oxidative activities of differentiated mesenchymal stem cells contribute to their therapeutic efficacy in cell-replacement therapy. Mesenchymal stem cells were isolated from human umbilical cord and induced to differentiate with basic fibroblast growth factor, nerve growth factor, epidermal growth factor, brain-derived neurotrophic factor and forskolin. The mesenchymal stem cells became rounded with long processes and expressed the neural markers, Tuj1, neurofilament 200, microtubule-associated protein-2 and neuron-specific enolase. Nestin expression was significantly reduced after neural induction. The expression of immunoregulatory and anti-oxidative genes was largely unchanged prior to and after neural induction in mesenchymal stem cells. There was no significant difference in the effects of control and induced mesenchymal stem cells on lymphocyte proliferation in co-culture experiments. However, the expression of human leukocyte antigen-G decreased significantly in induced neuron-like cells. These results suggest that growth factor-based methods enable the differentiation of mesenchymal stem cell toward immature neuronal-like cells, which retain their immunomodulatory and anti-oxidative activities.

Key words: umbilical cord, mesenchymal stem cell, immunomodulation, oxidative stress, neural induction, neural regeneration