RIP2 promotes glioma cell growth by regulating TRAF3 and activating the NF‑κB and p38 signaling pathways

  • Authors:
    • Xin Cai
    • Yongchang Yang
    • Wengrong Xia
    • Haibo Kong
    • Min Wang
    • Wenliang Fu
    • Minhui Long
    • Yuhua Hu
    • Donggang Xu
  • View Affiliations

  • Published online on: April 23, 2018     https://doi.org/10.3892/or.2018.6397
  • Pages: 2915-2923
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Abstract

Receptor‑interacting protein 2 (RIP2) has recently been reported to be involved in tumor infiltration and cancer metastasis. However, the function of RIP2 in human astrocytoma remains unclear. In the present study, we showed that the expressions of RIP2 and Bcl‑xL were positively correlated with the malignant grade in 28 cases of astrocytoma of various grades and 6 cases of normal human tissues. In addition, increased activity of the NF‑κB and p38 signaling pathways in astrocytoma tissue was observed. Cytological experiments indicated that RIP2 promoted human glioblastoma cell proliferation by inducing expression of Bcl‑xL, and knockdown of endogenous RIP2 promoted cell apoptosis. Mechanistically, knockdown of RIP2 suppressed downstream events including the canonical and alternative NF‑κB pathway as well as the mitogen‑activated protein kinase (p38) pathway. In addition, the present study also demonstrated that tumor necrosis factor receptor‑associated factor 3 (TRAF3), as a novel RIP2 binding partner, was downregulated in glioma tissues and functionally was a negative regulator involved in RIP2‑induced glioma cell growth. Taken together, the present study established a negative link between RIP2 and TRAF3 proteins and identifies a new pathway for regulating astrocytoma progression.
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June-2018
Volume 39 Issue 6

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

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Spandidos Publications style
Cai X, Yang Y, Xia W, Kong H, Wang M, Fu W, Long M, Hu Y and Xu D: RIP2 promotes glioma cell growth by regulating TRAF3 and activating the NF‑κB and p38 signaling pathways. Oncol Rep 39: 2915-2923, 2018
APA
Cai, X., Yang, Y., Xia, W., Kong, H., Wang, M., Fu, W. ... Xu, D. (2018). RIP2 promotes glioma cell growth by regulating TRAF3 and activating the NF‑κB and p38 signaling pathways. Oncology Reports, 39, 2915-2923. https://doi.org/10.3892/or.2018.6397
MLA
Cai, X., Yang, Y., Xia, W., Kong, H., Wang, M., Fu, W., Long, M., Hu, Y., Xu, D."RIP2 promotes glioma cell growth by regulating TRAF3 and activating the NF‑κB and p38 signaling pathways". Oncology Reports 39.6 (2018): 2915-2923.
Chicago
Cai, X., Yang, Y., Xia, W., Kong, H., Wang, M., Fu, W., Long, M., Hu, Y., Xu, D."RIP2 promotes glioma cell growth by regulating TRAF3 and activating the NF‑κB and p38 signaling pathways". Oncology Reports 39, no. 6 (2018): 2915-2923. https://doi.org/10.3892/or.2018.6397