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Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway

  • Authors:
    • Chaoliang Lv
    • Tao Zhang
    • Kang Li
    • Kai Gao
  • View Affiliations / Copyright

    Affiliations: Department of Spine Surgery, Jining No. 1 People's Hospital, Affiliated Jining No. 1 People's Hospital of Jining Medical University, Jining Medical University, Jining, Shandong 272011, P.R. China
    Copyright: © Lv et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 3657-3663
    |
    Published online on: April 2, 2020
       https://doi.org/10.3892/etm.2020.8640
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Abstract

Bone marrow mesenchymal stem cells (BMSCs) on the repair of spinal cord injury (SCI) in rats as well as the role of transforming growth factor‑β (TGF-β)/Smads signaling pathway in the repair were investigated. Rat BMSCs and astrocyte-spinal cords (ASCs) were isolated and cultured in vitro, and the cell purity was detected by flow cytometry. ASCs were co-cultured with TGF-β1, BMSCs and BMSCs + TGF‑β1, respectively, and grouped accordingly, and ASCs cultured conventionally were included into control group. 3-(4,5)-Dimethylthiahiazo(-z-y1)-3,5‑diphenyltetrazoliumbromide (MTT) assay was conducted to detect the proliferation ability of ASCs in each group. Western blotting (WB) was utilized to examine the expression of TGF‑β/Smads signaling pathway‑related proteins [TGF‑β1, Smad2 and phosphorylated (p)‑Smad2] in ASCs and ASCs co‑cultured with BMSCs. A rat model of SCI was established, and BMSCs were injected locally. Then (BBB) score was used to evaluate spinal cord repair, and WB was adopted to detect the expression of TGF‑β1, Smad2 and p‑Smad2 at the injured site. BMSCs and ASCs isolated in vitro grew well. According to MTT assay results, TGF‑β1 significantly promoted the proliferation of ASCs (P<0.05), and co‑culture of ASCs and BMSCs remarkably reduced the proliferation of ASCs (P<0.05). The detection of protein expression at the SCI site via WB demonstrated that the expression of TGF‑β1, Smad2 and p‑Smad2 in SCI group were obviously upregulated compared with those in Sham group at 1 week (P<0.05), and the injection of BMSCs could markedly downregulate the expression (P<0.05). After 3 week, there were no significant differences in the expression of TGF‑β1, Smad2 and p‑Smad2 among groups (P>0.05). The transplantation of BMSCs can improve the spinal function of SCI rats probably by inhibiting the TGF‑β/Smads signaling pathway and reducing the proliferation of ASCs.
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Copy and paste a formatted citation
Spandidos Publications style
Lv C, Zhang T, Li K and Gao K: Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway. Exp Ther Med 19: 3657-3663, 2020.
APA
Lv, C., Zhang, T., Li, K., & Gao, K. (2020). Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway. Experimental and Therapeutic Medicine, 19, 3657-3663. https://doi.org/10.3892/etm.2020.8640
MLA
Lv, C., Zhang, T., Li, K., Gao, K."Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway". Experimental and Therapeutic Medicine 19.6 (2020): 3657-3663.
Chicago
Lv, C., Zhang, T., Li, K., Gao, K."Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway". Experimental and Therapeutic Medicine 19, no. 6 (2020): 3657-3663. https://doi.org/10.3892/etm.2020.8640
Copy and paste a formatted citation
x
Spandidos Publications style
Lv C, Zhang T, Li K and Gao K: Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway. Exp Ther Med 19: 3657-3663, 2020.
APA
Lv, C., Zhang, T., Li, K., & Gao, K. (2020). Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway. Experimental and Therapeutic Medicine, 19, 3657-3663. https://doi.org/10.3892/etm.2020.8640
MLA
Lv, C., Zhang, T., Li, K., Gao, K."Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway". Experimental and Therapeutic Medicine 19.6 (2020): 3657-3663.
Chicago
Lv, C., Zhang, T., Li, K., Gao, K."Bone marrow mesenchymal stem cells improve spinal function of spinal cord injury in rats via TGF-β/Smads signaling pathway". Experimental and Therapeutic Medicine 19, no. 6 (2020): 3657-3663. https://doi.org/10.3892/etm.2020.8640
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