Chinese Journal of Tissue Engineering Research ›› 2013, Vol. 17 ›› Issue (6): 992-998.doi: 10.3969/j.issn.2095-4344.2013.06.008

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Induced differentiation of nucleus pulposus cells from bone marrow mesenchymal stem cells

Chen Liang1, 2, Li Da-peng1, Huang Yong-hui1, 2, Liu Kan2   

  1. 1 Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China
    2 People’s Hospital of Yixing, Yixing 214200, Jiangsu Province, China
  • Received:2012-09-09 Revised:2012-11-14 Online:2013-02-05 Published:2013-02-05
  • Contact: Huang Yong-hui, Master, Chief physician, Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China; People’s Hospital of Yixing, Yixing 214200, Jiangsu Province, China
  • About author:Chen Liang★, Master, Physician, Affiliated Hospital of Jiangsu University, Zhenjiang 212000, Jiangsu Province, China; People’s Hospital of Yixing, Yixing 214200, Jiangsu Province, China www.cl05107907962@163.com

Abstract:

BACKGROUND: There have been many reports addressing repair of degenerative lumbar intervertebral discs in rats using alginate compounded with bone marrow mesenchymal stem cells. However, there are few reports describing biological indices of this compounded material versus normal nucleus pulposus cells.
OBJECTIVE: To investigate the inducing effects of normal nucleus pulposus cells on bone marrow mesenchymal stem cells under Transwell non-contact co-culture condition.
METHODS: Rat bone marrow mesenchymal stem cells were cultured from the whole bone marrow and identified. Passage 3 bone marrow mesenchymal stem cells and nucleus pulposus cells compounded onto alginate were inoculated into a Transwell co-culture system. Bone marrow mesenchymal stem cells compounded onto alginate were inoculated onto the upper layer, and nucleus pulposus cells compounded onto alginate were inoculated onto the lower layer. After 7 days of co-culture, bone marrow mesenchymal stem cells were retrieved from the upper layer.
RESULTS AND CONCLUSION: RT-PCR results showed that type Ⅱ collagen, Sox-9 and versian mRNA expression in the bone marrow mesenchymal stem cells + nucleus pulposus cells group was similar to that in the normal nucleus pulposus cells group. These findings suggest that after co-cultured with nucleus pulposus cells, bone marrow mesenchymal stem cells can be induced to differentiate into nucleus pulposus cells.

Key words: stem cells, bone marrow-derived stem cells, sox9, bone marrow mesenchymal stem cells, alginate, nucleus pulposus, RT-PCR, intervertebral disc degeneration, type Ⅱ collagen, version, Transwell co-culture system, other grants-supported paper, stem cell photographs-containing paper

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