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Article

C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways

  • Authors:
    • Yoshihiro Maeda
    • Yoshiaki Kawano
    • Yoshihiro Wada
    • Junji Yatsuda
    • Takanobu Motoshima
    • Yoji Murakami
    • Ken Kikuchi
    • Takahisa Imamura
    • Masatoshi Eto
  • View Affiliations / Copyright

    Affiliations: Department of Urology, Faculty of Life Sciences, Kumamoto University, Kumamoto 860‑8556, Japan, Medical Quality Management Center, Kumamoto University Hospital, Kumamoto 860-0811, Japan, Department of Molecular Pathology, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
  • Pages: 1844-1850
    |
    Published online on: February 13, 2015
       https://doi.org/10.3892/or.2015.3800
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Abstract

The anaphylatoxin C5a is a chemoattractant for leukocyte migration via the C5a receptor (C5aR). We recently reported that C5aR was aberrantly expressed in a wide variety of human related cancers, while it also promotes cancer cell invasion by C5a stimulation. However, the biological significance of C5aR expression in renal cell carcinoma (RCC) has not yet been clarified. In the present study, we aimed to elucidate the biological role of C5aR in RCC progression. Clinical RCC specimens were analyzed for C5aR expression and its relationship with baseline demographic data and clinicopathological parameters was analyzed. Moreover, renal carcinoma Renca cells stably expressing C5aR were generated and used to assess the effects of C5a-C5aR axis activation on various cellular phenomena in culture. Immunohistochemistry revealed that 96.7% of the metastatic RCCs (mRCCs) showed C5aR expression, whereas only 50.5% of the non-metastatic RCCs expressed C5aR (P<0.001). Although C5a stimulation did not significantly alter anoikis of C5aR‑expressing Renca cells, C5a elicited cell morphological change and scattering of those cells accompanied with dynamic actin rearrangement, which was not observed in the Renca cells harboring the empty vector only. Moreover, C5a triggered ERK and PI3K‑dependent invasion of the C5aR-expressing renal carcinoma cells. These results are consistent with the idea that the C5a-C5aR axis plays a crucial role in renal carcinoma cell invasion, which may be one of the key steps for RCC metastasis. The present study provides proof‑of‑concept that the C5a-C5aR axis may be a useful therapeutic target for preventing RCC progression.
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Copy and paste a formatted citation
Spandidos Publications style
Maeda Y, Kawano Y, Wada Y, Yatsuda J, Motoshima T, Murakami Y, Kikuchi K, Imamura T and Eto M: C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways. Oncol Rep 33: 1844-1850, 2015.
APA
Maeda, Y., Kawano, Y., Wada, Y., Yatsuda, J., Motoshima, T., Murakami, Y. ... Eto, M. (2015). C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways. Oncology Reports, 33, 1844-1850. https://doi.org/10.3892/or.2015.3800
MLA
Maeda, Y., Kawano, Y., Wada, Y., Yatsuda, J., Motoshima, T., Murakami, Y., Kikuchi, K., Imamura, T., Eto, M."C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways". Oncology Reports 33.4 (2015): 1844-1850.
Chicago
Maeda, Y., Kawano, Y., Wada, Y., Yatsuda, J., Motoshima, T., Murakami, Y., Kikuchi, K., Imamura, T., Eto, M."C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways". Oncology Reports 33, no. 4 (2015): 1844-1850. https://doi.org/10.3892/or.2015.3800
Copy and paste a formatted citation
x
Spandidos Publications style
Maeda Y, Kawano Y, Wada Y, Yatsuda J, Motoshima T, Murakami Y, Kikuchi K, Imamura T and Eto M: C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways. Oncol Rep 33: 1844-1850, 2015.
APA
Maeda, Y., Kawano, Y., Wada, Y., Yatsuda, J., Motoshima, T., Murakami, Y. ... Eto, M. (2015). C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways. Oncology Reports, 33, 1844-1850. https://doi.org/10.3892/or.2015.3800
MLA
Maeda, Y., Kawano, Y., Wada, Y., Yatsuda, J., Motoshima, T., Murakami, Y., Kikuchi, K., Imamura, T., Eto, M."C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways". Oncology Reports 33.4 (2015): 1844-1850.
Chicago
Maeda, Y., Kawano, Y., Wada, Y., Yatsuda, J., Motoshima, T., Murakami, Y., Kikuchi, K., Imamura, T., Eto, M."C5aR is frequently expressed in metastatic renal cell carcinoma and plays a crucial role in cell invasion via the ERK and PI3 kinase pathways". Oncology Reports 33, no. 4 (2015): 1844-1850. https://doi.org/10.3892/or.2015.3800
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