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Article

EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma

  • Authors:
    • San Xu
    • Ju Bai
    • Zhou Zhuan
    • Bo Li
    • Zhibao Zhang
    • Xia Wu
    • Xiangjian Luo
    • Lifang Yang
  • View Affiliations / Copyright

    Affiliations: Key Laboratory of Carcinogenesis and Cancer Invasion of the Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan 410078, P.R. China, Pathology Department, Xiangya Hospital, Central South University, Changsha, Hunan 410078, P.R. China
  • Pages: 377-384
    |
    Published online on: May 3, 2018
       https://doi.org/10.3892/or.2018.6414
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Abstract

The Epstein-Barr virus latent membrane protein 1 (EBV‑LMP1) is an oncoviral protein that plays an important role in oncogenic transformation in EBV‑associated nasopharyngeal carcinoma (NPC). Our previous studies demonstrated that LMP1 increased VEGFA expression and upregulated angiogenesis in NPC. Vasculogenic mimicry (VM) is a mechanism by which tumor cells can obtain nutrients to survive, and VM has been observed in numerous types of tumors. However, the occurrence and significance of VM in NPC and the relationship between LMP1 and VM have not yet been evaluated. In the present study, we observed that it was almost impossible for LMP1-negative NPC cells to form tubular structures, whereas LMP1-positive NPC cells were able to form tubular structures. Moreover, VEGFA was found to be involved in VM formation in LMP1-positive NPC cells. Knockdown of LMP1 or VEGFR1 distinctly disrupted tubular structures, whereas inhibition of VEGFR2 did not affect the process, indicating that VEGFR1 not VEGFR2 signaling was involved in LMP1-mediated VM formation. Furthermore, the data of immunohistochemistry (IHC) and CD34/PAS double staining in a tumor tissue array showed that LMP1 was positively correlated with VEGFR1 and VM. Meanwhile, after analyzing the clinicopathological features, we found that VM formation was associated with a poor prognosis in NPC patients. These results suggest that VM formation is increased by EBV‑LMP1 via VEGF/VEGFR1 signaling and provide additional information to clarify the role of EBV‑LMP1 in NPC pathophysiology.
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Copy and paste a formatted citation
Spandidos Publications style
Xu S, Bai J, Zhuan Z, Li B, Zhang Z, Wu X, Luo X and Yang L: EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma. Oncol Rep 40: 377-384, 2018.
APA
Xu, S., Bai, J., Zhuan, Z., Li, B., Zhang, Z., Wu, X. ... Yang, L. (2018). EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma. Oncology Reports, 40, 377-384. https://doi.org/10.3892/or.2018.6414
MLA
Xu, S., Bai, J., Zhuan, Z., Li, B., Zhang, Z., Wu, X., Luo, X., Yang, L."EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma". Oncology Reports 40.1 (2018): 377-384.
Chicago
Xu, S., Bai, J., Zhuan, Z., Li, B., Zhang, Z., Wu, X., Luo, X., Yang, L."EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma". Oncology Reports 40, no. 1 (2018): 377-384. https://doi.org/10.3892/or.2018.6414
Copy and paste a formatted citation
x
Spandidos Publications style
Xu S, Bai J, Zhuan Z, Li B, Zhang Z, Wu X, Luo X and Yang L: EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma. Oncol Rep 40: 377-384, 2018.
APA
Xu, S., Bai, J., Zhuan, Z., Li, B., Zhang, Z., Wu, X. ... Yang, L. (2018). EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma. Oncology Reports, 40, 377-384. https://doi.org/10.3892/or.2018.6414
MLA
Xu, S., Bai, J., Zhuan, Z., Li, B., Zhang, Z., Wu, X., Luo, X., Yang, L."EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma". Oncology Reports 40.1 (2018): 377-384.
Chicago
Xu, S., Bai, J., Zhuan, Z., Li, B., Zhang, Z., Wu, X., Luo, X., Yang, L."EBV‑LMP1 is involved in vasculogenic mimicry formation via VEGFA/VEGFR1 signaling in nasopharyngeal carcinoma". Oncology Reports 40, no. 1 (2018): 377-384. https://doi.org/10.3892/or.2018.6414
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