Calcitonin inhibits invasion of breast cancer cells: Involvement of urokinase-type plasminogen activator (uPA) and uPA receptor

  • Authors:
    • Bo Han
    • Misa Nakamura
    • Gengyin Zhou
    • Aiko Ishii
    • Atsushi Nakamura
    • Yanhua Bai
    • Ichiro Mori
    • Kennichi Kakudo
  • View Affiliations

  • Published online on: April 1, 2006     https://doi.org/10.3892/ijo.28.4.807
  • Pages: 807-814
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Abstract

There is a growing body of evidence indicating that calcitonin (CT) and calcitonin receptor (CTR) are involved in the regulation of cell growth, differentiation, and survival and in tissue development. However, the precise functional role of CT/CTR in breast cancer is still unknown. It is well established that the urokinase plasminogen activator (uPA) system plays an important role in breast cancer invasion and metastasis. The goal of this study was to investigate the effects of CT on regulation of the uPA system and invasive capacity of breast cancer cells. In the highly invasive MDA-MB-231 cell line, 10−8 M CT decreased both uPA and uPAR mRNA and protein expression which was associated with inhibition of the extracellular signal-regulated kinase (ERK) 1/2 pathway. Furthermore, two weeks of CT administration to nude mice inhibited the expression of uPA mRNA in primary tumors by 25% (P<0.05), as compared to control, untreated animals. CT also inhibited the invasiveness of MDA-MB-231 cells by 37% (10−8 M CT, P<0.05), as determined by a Matrigel invasion assay. To the best of our knowledge, this is the first report describing a direct effect of CT on breast cancer cell invasion. Our data might suggest a close link between CT signaling, the uPA-mediated pathway, and breast cancer invasion.

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April 2006
Volume 28 Issue 4

Print ISSN: 1019-6439
Online ISSN:1791-2423

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Copy and paste a formatted citation
APA
Han, B., Nakamura, M., Zhou, G., Ishii, A., Nakamura, A., Bai, Y. ... Kakudo, K. (2006). Calcitonin inhibits invasion of breast cancer cells: Involvement of urokinase-type plasminogen activator (uPA) and uPA receptor. International Journal of Oncology, 28, 807-814. https://doi.org/10.3892/ijo.28.4.807
MLA
Han, B., Nakamura, M., Zhou, G., Ishii, A., Nakamura, A., Bai, Y., Mori, I., Kakudo, K."Calcitonin inhibits invasion of breast cancer cells: Involvement of urokinase-type plasminogen activator (uPA) and uPA receptor". International Journal of Oncology 28.4 (2006): 807-814.
Chicago
Han, B., Nakamura, M., Zhou, G., Ishii, A., Nakamura, A., Bai, Y., Mori, I., Kakudo, K."Calcitonin inhibits invasion of breast cancer cells: Involvement of urokinase-type plasminogen activator (uPA) and uPA receptor". International Journal of Oncology 28, no. 4 (2006): 807-814. https://doi.org/10.3892/ijo.28.4.807