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Article

Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells

  • Authors:
    • Yongfeng Yang
    • Yanwen Wang
    • Li Li
    • Ji Bao
    • Fei Chen
    • Li Zhang
  • View Affiliations / Copyright

    Affiliations: Laboratory of Pathology, Department of Pathology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
  • Pages: 8077-8084
    |
    Published online on: October 13, 2015
       https://doi.org/10.3892/mmr.2015.4429
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Abstract

Mesenchymal stem cells (MSCs) possess three characteristics critical to tissue regeneration; multipotency, low immunogenicity and an undifferentiated status, providing plasticity. However, increasing evidence has indicated that induction of an immune response in vivo can injure and reject MSC‑based tissues. Toll‑like receptors (TLRs) are a family of pathogen‑associated pattern recognition receptors, which are important in bridging the innate and adaptive immune responses. TLRs have been demonstrated to exhibit important MSC biological regulatory functions in previous studies. To confirm the role of TLR9 in the immune status maintenance of MSCs isolated from umbilical cords, the present study performed assessments to detect agonist effects. Following addition of the TLR9 agonist, CpG, to an umbilical cord mesenchymal stem cell (UCMSC) culture medium, a number of methods were used to detect the changes in the biological function of the UCMSCs. Reverse transcription‑quantitative polymerase chain reaction indicated increased levels of pro‑inflammatory molecules and decreased expression levels of stem cell markers following exposure to the TLR9 agonist. However, flow cytometry revealed that activation of TLR9 had no effect on the proliferation of peripheral blood leukocytes or the expression of surface markers. The present study also identified that CpG‑oligodeoxynucleotide promoted MSC osteogenic differentiation, while inhibiting MSC proliferation and migration. These results indicated that TLRs and their ligands may serve as regulators of MSC proliferation and differentiation, and affect the maintenance of MSC multipotency.
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Copy and paste a formatted citation
Spandidos Publications style
Yang Y, Wang Y, Li L, Bao J, Chen F and Zhang L: Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells. Mol Med Rep 12: 8077-8084, 2015.
APA
Yang, Y., Wang, Y., Li, L., Bao, J., Chen, F., & Zhang, L. (2015). Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells. Molecular Medicine Reports, 12, 8077-8084. https://doi.org/10.3892/mmr.2015.4429
MLA
Yang, Y., Wang, Y., Li, L., Bao, J., Chen, F., Zhang, L."Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells". Molecular Medicine Reports 12.6 (2015): 8077-8084.
Chicago
Yang, Y., Wang, Y., Li, L., Bao, J., Chen, F., Zhang, L."Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells". Molecular Medicine Reports 12, no. 6 (2015): 8077-8084. https://doi.org/10.3892/mmr.2015.4429
Copy and paste a formatted citation
x
Spandidos Publications style
Yang Y, Wang Y, Li L, Bao J, Chen F and Zhang L: Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells. Mol Med Rep 12: 8077-8084, 2015.
APA
Yang, Y., Wang, Y., Li, L., Bao, J., Chen, F., & Zhang, L. (2015). Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells. Molecular Medicine Reports, 12, 8077-8084. https://doi.org/10.3892/mmr.2015.4429
MLA
Yang, Y., Wang, Y., Li, L., Bao, J., Chen, F., Zhang, L."Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells". Molecular Medicine Reports 12.6 (2015): 8077-8084.
Chicago
Yang, Y., Wang, Y., Li, L., Bao, J., Chen, F., Zhang, L."Toll‑like receptor 9 agonist stimulation enables osteogenic differentiation without altering the immune status of umbilical cord mesenchymal stem cells". Molecular Medicine Reports 12, no. 6 (2015): 8077-8084. https://doi.org/10.3892/mmr.2015.4429
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