microRNA-133 inhibits cell proliferation, migration and invasion in prostate cancer cells by targeting the epidermal growth factor receptor

  • Authors:
    • Jun Tao
    • Deyao Wu
    • Bin Xu
    • Weichun Qian
    • Pengchao Li
    • Qiang Lu
    • Changjun Yin
    • Wei Zhang
  • View Affiliations

  • Published online on: March 7, 2012     https://doi.org/10.3892/or.2012.1711
  • Pages: 1967-1975
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Abstract

It has been shown that regulation of EGFR expression in prostate cancer cells is mostly at the transcriptional level. microRNA-133 (miR-133) has long been recognized as a muscle-specific miRNA which may regulate myoblast differentiation and participate in many myogenic diseases. Recently, it has been reported that miR-133 is also involved in other tumors, such as bladder cancer, esophageal cancer and may regulate cell motility in these cancer cells. In the present study, we examined the expression and effects of miR-133 in two hormone-insensitive prostate cancer cell lines. The expression of miR-133a and miR-133b were analyzed by quantitative RT-PCR. After transfection of miR-133a and miR-133b, cell viability assay, luciferase assay, western blot analysis, cell migration and invasion assay were conducted in Du145 and PC3 cells. In this study, we showed that miR‑133a and miR-133b are expressed at the detection limit in two hormone-insensitive prostate cancer cell lines, PC3 and DU145. Ectopic expression of miR-133 inhibited cell proliferation, migration and invasion in these cells. We also provide the first evidence that miR-133 may target EGFR. Our study provided the first glimpse of the functional role of miR-133 in two hormone-independent prostate cancer cell lines. These results may add to our knowledge on the molecular basis of prostate cancer progression.

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June 2012
Volume 27 Issue 6

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Tao J, Wu D, Xu B, Qian W, Li , Lu Q, Yin C and Zhang W: microRNA-133 inhibits cell proliferation, migration and invasion in prostate cancer cells by targeting the epidermal growth factor receptor. Oncol Rep 27: 1967-1975, 2012
APA
Tao, J., Wu, D., Xu, B., Qian, W., Li, ., Lu, Q. ... Zhang, W. (2012). microRNA-133 inhibits cell proliferation, migration and invasion in prostate cancer cells by targeting the epidermal growth factor receptor. Oncology Reports, 27, 1967-1975. https://doi.org/10.3892/or.2012.1711
MLA
Tao, J., Wu, D., Xu, B., Qian, W., Li, ., Lu, Q., Yin, C., Zhang, W."microRNA-133 inhibits cell proliferation, migration and invasion in prostate cancer cells by targeting the epidermal growth factor receptor". Oncology Reports 27.6 (2012): 1967-1975.
Chicago
Tao, J., Wu, D., Xu, B., Qian, W., Li, ., Lu, Q., Yin, C., Zhang, W."microRNA-133 inhibits cell proliferation, migration and invasion in prostate cancer cells by targeting the epidermal growth factor receptor". Oncology Reports 27, no. 6 (2012): 1967-1975. https://doi.org/10.3892/or.2012.1711