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Article

Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival

  • Authors:
    • Yiyan Zhang
    • Jijun Li
    • Yan Song
    • Fengkun Chen
    • Yin Pei
    • Fenghua Yao
  • View Affiliations / Copyright

    Affiliations: Department of Nephrology, First Affiliated Hospital of Chinese PLA General Hospital, Beijing 100048, P.R. China
  • Pages: 860-866
    |
    Published online on: June 10, 2014
       https://doi.org/10.3892/mmr.2014.2310
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Abstract

The present study was designed to elucidate the expression levels and the proliferative effect of flotillin-1, an integral membrane protein encoded by the FLOT1 gene, in human clear-cell renal cell carcinoma (RCC). Flotillin has been implicated in other types of cancer, but the role of flotillin in RCC has not been established. Immunohistochemistry and western blotting were used to determine FLOT1 protein expression levels in RCC samples from 182 patients who underwent nephrectomy. FLOT1 mRNA expression levels were analyzed using reverse-transcription (RT) and RT-quantitative polymerase chain reaction (PCR). The association between FLOT1 expression levels in the tumor samples and patient survival time was examined using Kaplan‑Meier analysis. To demonstrate the proliferative effect of FLOT1 on RCC cells, a FLOT1 vector was transfected into four RCC cell lines and FLOT1 expression was inhibited using small interfering RNA. The proliferative ability of the RCC cells was investigated using a WST-1 assay and xenograft experiments with BALB/C nude mice. The results demonstrated that FLOT1 expression levels were significantly higher in RCC cell samples from patients than in healthy renal tissue, and the expression levels were associated with tumor stage, size and histological grade. In addition, FLOT1 significantly enhanced the proliferation of RCC cell lines in vitro and in vivo. These findings suggest that FLOT1, which is upregulated in RCC, is involved in RCC cell proliferation, tumorigenesis and progression. Therefore, FLOT1 is an independent prognostic marker and therapeutic target for patients with clear-cell RCC.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang Y, Li J, Song Y, Chen F, Pei Y and Yao F: Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival. Mol Med Rep 10: 860-866, 2014.
APA
Zhang, Y., Li, J., Song, Y., Chen, F., Pei, Y., & Yao, F. (2014). Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival. Molecular Medicine Reports, 10, 860-866. https://doi.org/10.3892/mmr.2014.2310
MLA
Zhang, Y., Li, J., Song, Y., Chen, F., Pei, Y., Yao, F."Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival". Molecular Medicine Reports 10.2 (2014): 860-866.
Chicago
Zhang, Y., Li, J., Song, Y., Chen, F., Pei, Y., Yao, F."Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival". Molecular Medicine Reports 10, no. 2 (2014): 860-866. https://doi.org/10.3892/mmr.2014.2310
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang Y, Li J, Song Y, Chen F, Pei Y and Yao F: Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival. Mol Med Rep 10: 860-866, 2014.
APA
Zhang, Y., Li, J., Song, Y., Chen, F., Pei, Y., & Yao, F. (2014). Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival. Molecular Medicine Reports, 10, 860-866. https://doi.org/10.3892/mmr.2014.2310
MLA
Zhang, Y., Li, J., Song, Y., Chen, F., Pei, Y., Yao, F."Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival". Molecular Medicine Reports 10.2 (2014): 860-866.
Chicago
Zhang, Y., Li, J., Song, Y., Chen, F., Pei, Y., Yao, F."Flotillin-1 expression in human clear-cell renal cell carcinoma is associated with cancer progression and poor patient survival". Molecular Medicine Reports 10, no. 2 (2014): 860-866. https://doi.org/10.3892/mmr.2014.2310
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