Abstract
Stromal cell-derived factor 1 (SDF-1)/CXCR4 ligand-receptor axis is widely recommended as an attractive target for cancer therapy. Meanwhile, epithelial-mesenchymal transition (EMT) process is linked to disease pathophysiology. As one of inhibitors of apoptosis proteins, survivin is implicated in the onset and development of cancer. In the present study, we tried to determine the cause-effect associations between SDF-1/CXCR4 axis and survivin expression in glioblastoma U-251 cell line. Survivin activation and inhibition were induced with exogenous SDF-1 and survivin small interfering RNA (survivin siRNA), respectively. Western blot was used to detect relevant proteins in SDF-1/CXCR4 axis. Western blot analysis revealed that survivin expression in U-251 increased in a dose- and time-dependent manner in response to SDF-1 treatment. However, the interference with MEK/ERK and PI3K/AKT pathway prohibited SDF-1-induced survivin up-regulation. Importantly, survivin knockdown abrogated cell cycle progression and the expression of snail and N-cadherin, compared with non-transfectants. In conclusion, the present study shows that SDF-1 up-regulates survivin via MEK/ERK and PI3K/AKT pathway, leading to cell cycle progression and EMT occurrence dependent on survivin. The blockade of survivin will allow for the treatment of glioblastoma.
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We gratefully thank other members of Yang Lab for their critical reading of this paper and valuable suggestions.
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This article has been retracted at the request of the Editor-in-Chief and the Publisher per the Committee on Publication Ethics guidelines. The article shows evidence of irregularities in authorship during the submission process, there is strong reason to believe that the peer review process was compromised and the article shows similarities with the following articles which were submitted within a close timeframe:
Wenliang Chen, Xiao Zhong, Yi Wei, Yun Liu, Quan Yi, Genshui Zhang, Lishan He, Fajiang Chen, Yingping Liu, Jiandong Luo, TGF-β Regulates Survivin to Affect Cell Cycle and the Expression of EGFR and MMP9 in Glioblastoma, Molecular Neurobiology, April 2016, Volume 53, Issue 3, pp 1648–1653, DOI: 10.1007/s12035-015-9121-6 Received: 2 December 2014
Peng Yang, Gang Wang, Hongjun Huo, Qiang Li, Yan Zhao, Yuanhang Liu, SDF-1/CXCR4 signaling up-regulates survivin to regulate human sacral chondrosarcoma cell cycle and epithelial–mesenchymal transition via ERK and PI3K/AKT pathway, Med Oncol (2015) 32:377 DOI: 10.1007/s12032-014-0377-x Received: 13 November 2014
The article “SDF-1/CXCR4 Axis Regulates Cell Cycle Progression and Epithelial-Mesenchymal Transition via Up-regulation of Survivin in Glioblastoma” was received 1 November 2014.
An erratum to this article is available at http://dx.doi.org/10.1007/s12035-017-0508-4.
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Liao, A., Shi, R., Jiang, Y. et al. RETRACTED ARTICLE: SDF-1/CXCR4 Axis Regulates Cell Cycle Progression and Epithelial-Mesenchymal Transition via Up-regulation of Survivin in Glioblastoma. Mol Neurobiol 53, 210–215 (2016). https://doi.org/10.1007/s12035-014-9006-0
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DOI: https://doi.org/10.1007/s12035-014-9006-0