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Clinical significance of TrkB expression in nasopharyngeal carcinoma

  • Authors:
    • Shi-Sheng Li
    • Jia-Jia Liu
    • Shuang Wang
    • Qing-Lai Tang
    • Bing-Bing Liu
    • Xin-Ming Yang

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  • Published online on: November 28, 2013     https://doi.org/10.3892/or.2013.2878
  • Pages: 665-672
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Abstract

Recent research has demonstrated that tropomyosin‑related kinase B (TrkB) plays an important role in neuronal survival, differentiation and migration; yet, its specific role in human nasopharyngeal carcinoma (NPC) is unclear. To elucidate its role in NPC, we examined TrkB expression in NPC tissues and cell lines, and investigated the correlation between TrkB expression and prognosis in patients with NPC. Immunohistochemical analysis was performed on NPC specimens from 108 patients with follow-up information. Additionally, reverse transcriptase-polymerase chain reaction (RT-PCR) and western blot analyses were used to determine TrkB expression levels in NPC and noncancerous nasopharyngeal tissues. RT-PCR and western blot analyses were also used to determine TrkB expression levels in 7 NPC cell lines and a nasopharyngeal epithelium cell line. High TrkB expression was significantly correlated with T classification, lymph node metastasis and clinical stage, respectively. Patients with NPC who had high TrkB expression had reduced disease-free survival and overall survival when compared with patients who had low TrkB expression. Multivariate Cox regression analysis revealed that TrkB overexpression was an independent prognostic factor for patients with NPC. Furthermore, TrkB was overexpressed in NPC specimens and cell lines. TrkB expression levels were significantly increased in NPC specimens, and enhanced levels were correlated with a poor prognosis in patients with NPC. These findings suggest that TrkB may contribute to NPC progression and represent a novel prognostic indicator for patients with NPC.
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2014-February
Volume 31 Issue 2

Print ISSN: 1021-335X
Online ISSN:1791-2431

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  • Impact Factor: 3.8
  • Ranked Oncology
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  • CiteScore: 8.5
  • CiteScore Rank: Q1: #74/404 Oncology
  • Source Normalized Impact per Paper (SNIP): 0.719
  • SCImago Journal Rank (SJR): 0.864
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Spandidos Publications style
Li S, Liu J, Wang S, Tang Q, Liu B and Yang X: Clinical significance of TrkB expression in nasopharyngeal carcinoma. Oncol Rep 31: 665-672, 2014.
APA
Li, S., Liu, J., Wang, S., Tang, Q., Liu, B., & Yang, X. (2014). Clinical significance of TrkB expression in nasopharyngeal carcinoma. Oncology Reports, 31, 665-672. https://doi.org/10.3892/or.2013.2878
MLA
Li, S., Liu, J., Wang, S., Tang, Q., Liu, B., Yang, X."Clinical significance of TrkB expression in nasopharyngeal carcinoma". Oncology Reports 31.2 (2014): 665-672.
Chicago
Li, S., Liu, J., Wang, S., Tang, Q., Liu, B., Yang, X."Clinical significance of TrkB expression in nasopharyngeal carcinoma". Oncology Reports 31, no. 2 (2014): 665-672. https://doi.org/10.3892/or.2013.2878