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Article

siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer

  • Authors:
    • Yongguang Xu
    • Gongming Wang
    • Xuli Zou
    • Zaiqi Yang
    • Qin Wang
    • Hao Feng
    • Mengyuan Zhang
  • View Affiliations / Copyright

    Affiliations: Department of Anesthesiology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China, Department of Anesthesiology, Taian Central Hospital, Taian, Shandong 270000, P.R. China, Department of Anesthesiology, Jinan Central Hospital, Jinan, Shandong 250000, P.R. China, Department of Anesthesiology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
  • Pages: 221-229
    |
    Published online on: November 12, 2015
       https://doi.org/10.3892/etm.2015.2859
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Abstract

It has previously been suggested that the upregulation of GluN2B-containing N-methyl D-aspartate receptors (GluN2B) within the rostral anterior cingulate cortex (rACC) may contribute to the development of chronic pain. The present study used a rat model of bone cancer pain in order to investigate whether lentiviral‑mediated delivery of small interfering RNAs targeting GluN2B (LV‑GluN2B) could attenuate pain associated with bone cancer, by selectively decreasing GluN2B expression within the rACC. Sprague Dawley rats were inoculated with osteosarcoma cells into the intramedullary space of the right tibia in order to induce persistent bone cancer-associated pain. Intra-rACC administration of the lentiviral siRNA was performed in the tumor bearing rats; and reverse transcription‑quantitative polymerase chain reaction and western blotting were performed in order to detect the expression levels of GluN2B. Pain behavior changes were evaluated via paw withdrawal threshold and latency determinations. Marked and region‑selective decreases in the mRNA and protein expression levels of GluN2B were detected in the rACC following the intra‑rACC administration of LV‑GluN2B. Furthermore, the rats also exhibited pain behavior changes corresponding to the decreased levels of GluN2B. By post‑operative day 14, inoculation of osteosarcoma cells had significantly enhanced mechanical allodynia and thermal hyperalgesia in the rats, which were subsequently attenuated by the intra-rACC administration of LV-GluN2B. Notably, the paw withdrawal threshold and latency of the tumor‑bearing rats had recovered to normal levels, by day 14 post-administration. The results of the present study suggest that GluN2B within the rACC may be a potential target for RNA interference therapy for the treatment of pain associated with bone cancer. Furthermore, the lentiviral vector delivery strategy may be a promising novel approach for the treatment of bone cancer pain.
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Copy and paste a formatted citation
Spandidos Publications style
Xu Y, Wang G, Zou X, Yang Z, Wang Q, Feng H and Zhang M: siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer. Exp Ther Med 11: 221-229, 2016.
APA
Xu, Y., Wang, G., Zou, X., Yang, Z., Wang, Q., Feng, H., & Zhang, M. (2016). siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer. Experimental and Therapeutic Medicine, 11, 221-229. https://doi.org/10.3892/etm.2015.2859
MLA
Xu, Y., Wang, G., Zou, X., Yang, Z., Wang, Q., Feng, H., Zhang, M."siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer". Experimental and Therapeutic Medicine 11.1 (2016): 221-229.
Chicago
Xu, Y., Wang, G., Zou, X., Yang, Z., Wang, Q., Feng, H., Zhang, M."siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer". Experimental and Therapeutic Medicine 11, no. 1 (2016): 221-229. https://doi.org/10.3892/etm.2015.2859
Copy and paste a formatted citation
x
Spandidos Publications style
Xu Y, Wang G, Zou X, Yang Z, Wang Q, Feng H and Zhang M: siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer. Exp Ther Med 11: 221-229, 2016.
APA
Xu, Y., Wang, G., Zou, X., Yang, Z., Wang, Q., Feng, H., & Zhang, M. (2016). siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer. Experimental and Therapeutic Medicine, 11, 221-229. https://doi.org/10.3892/etm.2015.2859
MLA
Xu, Y., Wang, G., Zou, X., Yang, Z., Wang, Q., Feng, H., Zhang, M."siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer". Experimental and Therapeutic Medicine 11.1 (2016): 221-229.
Chicago
Xu, Y., Wang, G., Zou, X., Yang, Z., Wang, Q., Feng, H., Zhang, M."siRNA-mediated downregulation of GluN2B in the rostral anterior cingulate cortex attenuates mechanical allodynia and thermal hyperalgesia in a rat model of pain associated with bone cancer". Experimental and Therapeutic Medicine 11, no. 1 (2016): 221-229. https://doi.org/10.3892/etm.2015.2859
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