Open Access

Influence of biomechanical and biochemical stimulation on the proliferation and differentiation of bone marrow stromal cells seeded on polyurethane scaffolds

  • Authors:
    • Songsong Teng
    • Chaoxu Liu
    • Daniel Guenther
    • Mohamed Omar
    • Claudia Neunaber
    • Christian Krettek
    • Michael Jagodzinski
  • View Affiliations

  • Published online on: March 30, 2016     https://doi.org/10.3892/etm.2016.3206
  • Pages: 2086-2094
  • Copyright: © Teng et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The aim of the present investigation was to compare the effects of cyclic compression, perfusion, dexamethasone (DEX) and bone morphogenetic protein‑7 (BMP‑7) on the proliferation and differentiation of human bone marrow stromal cells (hBMSCs) in polyurethane scaffolds in a perfusion bioreactor. Polyurethane scaffolds seeded with hBMSCs were cultured under six different conditions, as follows: 10% Cyclic compression at 0.5 and 5 Hz; 10 ml/min perfusion; 100 nM DEX; 100 ng/ml BMP‑7; and 1 ml/min perfusion without mechanical and biochemical stimulation (control). On days 7 and 14, samples were tested for the following data: Cell proliferation; mRNA expression of Runx2, COL1A1 and osteocalcin; osteocalcin content; calcium deposition; and the equilibrium modulus of the tissue specimen. The results indicated that BMP‑7 and 10 ml/min perfusion promoted cell proliferation, which was inhibited by 5 Hz cyclic compression and DEX. On day 7, the 5 Hz cyclic compression inhibited Runx2 expression, whereas the 0.5 Hz cyclic compression and BMP‑7 upregulated the COL1A1 mRNA levels on day 7 and enhanced the osteocalcin expression on day 14. The DEX‑treated hBMSCs exhibited downregulated osteocalcin expression. After 14 days, the BMP‑7 group exhibited the highest calcium deposition, followed by the 0.5 Hz cyclic compression and the DEX groups. The equilibrium modulus of the engineered constructs significantly increased in the BMP‑7, 0.5 Hz cyclic compression and DEX groups. In conclusion, the present results suggest that BMP‑7 and perfusion enhance cell proliferation, whereas high frequency cyclic compression inhibits the proliferation and osteogenic differentiation of hBMSCs. Low frequency cyclic compression is more effective than DEX, but less effective compared with BMP‑7 on the osteogenic differentiation of hBMSCs seeded on polyurethane scaffolds.
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June-2016
Volume 11 Issue 6

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Teng S, Liu C, Guenther D, Omar M, Neunaber C, Krettek C and Jagodzinski M: Influence of biomechanical and biochemical stimulation on the proliferation and differentiation of bone marrow stromal cells seeded on polyurethane scaffolds. Exp Ther Med 11: 2086-2094, 2016.
APA
Teng, S., Liu, C., Guenther, D., Omar, M., Neunaber, C., Krettek, C., & Jagodzinski, M. (2016). Influence of biomechanical and biochemical stimulation on the proliferation and differentiation of bone marrow stromal cells seeded on polyurethane scaffolds. Experimental and Therapeutic Medicine, 11, 2086-2094. https://doi.org/10.3892/etm.2016.3206
MLA
Teng, S., Liu, C., Guenther, D., Omar, M., Neunaber, C., Krettek, C., Jagodzinski, M."Influence of biomechanical and biochemical stimulation on the proliferation and differentiation of bone marrow stromal cells seeded on polyurethane scaffolds". Experimental and Therapeutic Medicine 11.6 (2016): 2086-2094.
Chicago
Teng, S., Liu, C., Guenther, D., Omar, M., Neunaber, C., Krettek, C., Jagodzinski, M."Influence of biomechanical and biochemical stimulation on the proliferation and differentiation of bone marrow stromal cells seeded on polyurethane scaffolds". Experimental and Therapeutic Medicine 11, no. 6 (2016): 2086-2094. https://doi.org/10.3892/etm.2016.3206