Open Access

Radiofrequency heat‑enhanced direct intratumoral chemotherapy for prostate cancer

  • Authors:
    • Xia Wu
    • Feng Zhang
    • Peng Hu
    • Lumin Chen
    • Guocan Han
    • Weixian Bai
    • Jingfeng Luo
    • Ran Chen
    • Yurong Zhou
    • Jihong Sun
    • Xiaoming Yang
  • View Affiliations

  • Published online on: October 6, 2017     https://doi.org/10.3892/ol.2017.7145
  • Pages:7250-7256
  • Copyright: © Wu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

A novel, minimally invasive interventional technique, radiofrequency heat (RFH), has been suggested to improve the efficacy of chemotherapy for solid organ tumors. However, the treatment for prostate cancer has not been completely characterized. The aim of the present study was to investigate the in vitro and in vivo efficiency of chemotherapy in combination with RFH for the treatment of prostate cancer. The following four treatment groups were included: i) No treatment (control); ii) RFH‑only; iii) chemotherapy (docetaxel)‑only; and iv) combination therapy of docetaxel and RFH in human prostate cancer (HPC) cell lines and mice with HPC xenografts. In the in vitro experiments, a heating guidewire was attached under the bottom of the last chamber of the four‑chamber cell culture slide, and was then connected to a radiofrequency (RF) generator. In the in vivo experiments, a tumor model was generated by subcutaneously injecting human prostate cancer cells into 24 male nu/nu mice. RFH was conducted by inserting the 0.022‑inch heating‑guidewire into the tumor. The follow‑up magnetic resonance imaging demonstrated a significant reduction in the average tumor size in animals treated with combination therapy compared with those receiving RFH‑only and chemotherapy‑only. The number of apoptotic cells and the average apoptotic index of the combination therapy group were significantly higher compared with those of the other three treatment groups. In conclusion, the results of the present study suggested that RFH is able to increase the therapeutic efficiency of docetaxel in prostate cancer, and this study serves as a foundation for the future development of an interventional molecular image‑guided local treatment strategy for prostate cancer that integrates RF technology, interventional oncology and direct intratumoral chemotherapy, as a replacement for systemic chemotherapy.

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December 2017
Volume 14 Issue 6

Print ISSN: 1792-1074
Online ISSN:1792-1082

2016 Impact Factor: 1.39
Ranked #68/217 Oncology
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APA
Wu, X., Zhang, F., Hu, P., Chen, L., Han, G., Bai, W. ... Yang, X. (2017). Radiofrequency heat‑enhanced direct intratumoral chemotherapy for prostate cancer. Oncology Letters, 14, 7250-7256. https://doi.org/10.3892/ol.2017.7145
MLA
Wu, X., Zhang, F., Hu, P., Chen, L., Han, G., Bai, W., Luo, J., Chen, R., Zhou, Y., Sun, J., Yang, X."Radiofrequency heat‑enhanced direct intratumoral chemotherapy for prostate cancer". Oncology Letters 14.6 (2017): 7250-7256.
Chicago
Wu, X., Zhang, F., Hu, P., Chen, L., Han, G., Bai, W., Luo, J., Chen, R., Zhou, Y., Sun, J., Yang, X."Radiofrequency heat‑enhanced direct intratumoral chemotherapy for prostate cancer". Oncology Letters 14, no. 6 (2017): 7250-7256. https://doi.org/10.3892/ol.2017.7145