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Article

Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma

  • Authors:
    • Ping Shi
    • Changcun Fang
    • Xinyan Pang
  • View Affiliations / Copyright

    Affiliations: Department of Emergency Surgery, Qilu Hospital of Shandong University, Jinan, Shandong, P.R. China, Department of Cardiosurgery, Qilu Hospital of Shandong University, Jinan, Shandong, P.R. China
  • Pages: 1319-1326
    |
    Published online on: June 25, 2015
       https://doi.org/10.3892/or.2015.4081
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Abstract

In recent years, astrocyte elevated gene-1 (AEG-1) has been reported as a key mediator that is involved in the epithelial-to-mesenchymal transition (EMT) process. However, the mechanisms underlying CCL3/CCR5-AEG-1 pathway-mediated EMT in cardiac myxoma (CM) has not been well featured till now. We used immnohistochemistry and immunoblotting to assess the expression of CCR5 and AEG-1 in 30 cases of CM tissues and cells. Subsequently, cultured CM cells were treated with si-AEG-1 or si-CCR5 and then subjected to in vitro assays. We observed that CCR5 and AEG-1 proteins were highly expressed in CM tissues (73.3 and 76.7%, respectively) and closely correlated with tumor size (>5 cm). Importantly, we validated the expression of AEG-1, p-Erk1/2, p-Akt, vimentin, N-cadherin and MMP2 increased in the CM cell with CCL3 treatment in a time- and concentration-dependent manner. When CM cells were treated with si-CCR5, the expression of AEG-1, p-Erk1/2, p-Akt, vimentin, N-cadherin and MMP2 was downregulated. In addition, when CM cells were treated with si-AEG-1, the expression of p-Erk1/2, p-Akt, vimentin, N-cadherin and MMP2 was also downregulated. Using the cell cycle and proliferation assay, the knockdown of AEG-1 inhibited the entry of G1 into S phase and the proliferation capacity of CM cells. In conclusion, AEG-1 mediates CCL3/CCR5-induced EMT development via both Erk1/2 and Akt signaling pathway in CM patients, which indicates CCL3/CCR5-AEG-1-EMT pathway could be suggested as a useful target to affect the progression of CM.
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Copy and paste a formatted citation
Spandidos Publications style
Shi P, Fang C and Pang X: Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma. Oncol Rep 34: 1319-1326, 2015.
APA
Shi, P., Fang, C., & Pang, X. (2015). Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma. Oncology Reports, 34, 1319-1326. https://doi.org/10.3892/or.2015.4081
MLA
Shi, P., Fang, C., Pang, X."Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma". Oncology Reports 34.3 (2015): 1319-1326.
Chicago
Shi, P., Fang, C., Pang, X."Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma". Oncology Reports 34, no. 3 (2015): 1319-1326. https://doi.org/10.3892/or.2015.4081
Copy and paste a formatted citation
x
Spandidos Publications style
Shi P, Fang C and Pang X: Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma. Oncol Rep 34: 1319-1326, 2015.
APA
Shi, P., Fang, C., & Pang, X. (2015). Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma. Oncology Reports, 34, 1319-1326. https://doi.org/10.3892/or.2015.4081
MLA
Shi, P., Fang, C., Pang, X."Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma". Oncology Reports 34.3 (2015): 1319-1326.
Chicago
Shi, P., Fang, C., Pang, X."Astrocyte elevated gene-1 regulates CCL3/CCR5-induced epithelial-to-mesenchymal transition via Erk1/2 and Akt signaling in cardiac myxoma". Oncology Reports 34, no. 3 (2015): 1319-1326. https://doi.org/10.3892/or.2015.4081
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