SOX4 induces tumor invasion by targeting EMT-related pathway in prostate cancer

Yifan Liu1, Shan Zeng2, Xianhan Jiang1

  • 11 Department of Urology, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.

Insights

Sex-determining region Y-related high-mobility group box 4 (SOX4) drives prostate cancer progression. Inhibiting SOX4 reduces cancer cell proliferation and migration, offering a potential therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cancer Research

Background:

  • Sex-determining region Y-related high-mobility group box 4 (SOX4) is implicated in tumor progression and poor outcomes across various cancers.
  • The role of SOX4 in prostate cancer's biological behaviors and its potential link to the epithelial-mesenchymal transition (EMT) pathway require further investigation.

Purpose of the Study:

  • To determine the expression levels of SOX4 in prostate cancer tissues and cell lines.
  • To evaluate the impact of SOX4 on prostate cancer cell proliferation, migration, and invasion.
  • To elucidate the mechanism by which SOX4 influences prostate cancer, specifically through the epithelial-mesenchymal transition (EMT) pathway.

Main Methods:

  • SOX4 expression was analyzed in prostate cancer tissues and adjacent noncancerous tissues, alongside a panel of prostate cancer cell lines.
  • Prostate cancer cell lines with SOX4 knockdown were subjected to proliferation, migration, and invasion assays (e.g., MTT and Transwell assays).
  • Changes in epithelial-mesenchymal transition (EMT) markers, E-cadherin and vimentin, were assessed following SOX4 inhibition.

Main Results:

  • SOX4 expression was significantly upregulated in both prostate cancer tissues and cell lines compared to normal controls.
  • Knockdown of SOX4 expression markedly repressed the proliferation and migration capabilities of DU145 prostate cancer cells.
  • Inhibition of SOX4 reversed EMT processes, evidenced by increased E-cadherin and decreased vimentin expression.

Conclusions:

  • SOX4 is overexpressed in prostate cancer and promotes key cancer cell behaviors like proliferation and migration.
  • SOX4 appears to mediate its effects, at least in part, through the regulation of the epithelial-mesenchymal transition pathway.
  • SOX4 represents a promising therapeutic target for the treatment of prostate cancer.

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