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Article

Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer

  • Authors:
    • Jiang Wang
    • Gang Li
    • Bo Li
    • Hualin Song
    • Zhiqun Shang
    • Ning Jiang
    • Yuanjie Niu
  • View Affiliations / Copyright

    Affiliations: Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
  • Pages: 4364-4370
    |
    Published online on: April 7, 2017
       https://doi.org/10.3892/ol.2017.6010
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Abstract

The aim of the present study was to observe the dynamic changes of proto‑oncogene, serine/threonine kinase, Pim‑1 at the gene and protein level in a mouse model of prostate cancer following surgical castration. Using LNCaP cells to establish a subcutaneous xenograft model and orthotopic prostate cancer BALB/c nude mouse models, the xenograft models were divided into an androgen‑dependent prostate cancer group (ADPC), an androgen deprivation therapy (ADT) group and an androgen independent prostate cancer (AIPC) group. Reverse transcription‑polymerase chain reaction (RT‑PCR), RT‑quantitative PCR, ELISA and immunohistochemistry analyses were performed to compare the expression levels of Pim‑1, prostate‑specific antigen (PSA) and androgen receptor (AR) in tumor tissue of three subgroups. Agarose gel electrophoresis revealed that the RT‑PCR results of the ADPC (0.59±0.01) and AIPC groups (1.14±0.015) were significantly different when compared with the ADT group (0.62±0.026; P<0.05). As for RT‑qPCR, the ΔCq of Pim‑1 in the ADPC (6.15±0.34) and AIPC (4.56±0.23) groups were significantly different compared with the ADT group (5.11±0.21; P<0.05). Using 2‑ΔΔCq as a relative quantification method to analyze the data, the amplification products of Pim‑1 increased by 2.05 and 3.01 times in the ADT and AIPC groups, respectively. ELISA demonstrated the following: The serum concentration of PSA was 0 ng/ml in the control group, 0.48±0.025 ng/ml in the ADPC group and 0.87±0.023 ng/ml in the AIPC group, which were significantly different compared with the ADT group (0.17±0.032 ng/ml; P<0.01). Upon immunohistochemical staining, the protein expression levels of Pim‑1 and AR, respectively, were 0.017±0.0021 and 0.032±0.009 in the ADPC group, 0.024±0.0019 and 0.040±0.011 in the AIPC group, and 0.018±0.0013 and 0.019±0.006 in the ADT group. The protein levels of Pim‑1 and AR in the ADPC and AIPC groups were significantly different compared with the ADT group (P<0.01). In addition, an orthotopic prostate cancer animal model of ADT was successfully established in the current study, and further investigation revealed that ADT did not affect the expression of Pim‑1 at the gene or protein levels; thus, it is hypothesized that Pim‑1 may be important in the proliferation and differentiation of prostate cancer during ADT.
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Copy and paste a formatted citation
Spandidos Publications style
Wang J, Li G, Li B, Song H, Shang Z, Jiang N and Niu Y: Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer. Oncol Lett 13: 4364-4370, 2017.
APA
Wang, J., Li, G., Li, B., Song, H., Shang, Z., Jiang, N., & Niu, Y. (2017). Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer. Oncology Letters, 13, 4364-4370. https://doi.org/10.3892/ol.2017.6010
MLA
Wang, J., Li, G., Li, B., Song, H., Shang, Z., Jiang, N., Niu, Y."Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer". Oncology Letters 13.6 (2017): 4364-4370.
Chicago
Wang, J., Li, G., Li, B., Song, H., Shang, Z., Jiang, N., Niu, Y."Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer". Oncology Letters 13, no. 6 (2017): 4364-4370. https://doi.org/10.3892/ol.2017.6010
Copy and paste a formatted citation
x
Spandidos Publications style
Wang J, Li G, Li B, Song H, Shang Z, Jiang N and Niu Y: Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer. Oncol Lett 13: 4364-4370, 2017.
APA
Wang, J., Li, G., Li, B., Song, H., Shang, Z., Jiang, N., & Niu, Y. (2017). Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer. Oncology Letters, 13, 4364-4370. https://doi.org/10.3892/ol.2017.6010
MLA
Wang, J., Li, G., Li, B., Song, H., Shang, Z., Jiang, N., Niu, Y."Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer". Oncology Letters 13.6 (2017): 4364-4370.
Chicago
Wang, J., Li, G., Li, B., Song, H., Shang, Z., Jiang, N., Niu, Y."Androgen deprivation therapy has no effect on Pim-1 expression in a mouse model of prostate cancer". Oncology Letters 13, no. 6 (2017): 4364-4370. https://doi.org/10.3892/ol.2017.6010
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