MicroRNA-19a-3p suppresses invasion and metastasis of prostate cancer via inhibiting SOX4

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An Orthotopic Murine Model of Human Prostate Cancer Metastasis
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An Orthotopic Murine Model of Human Prostate Cancer Metastasis

Published on: September 18, 2013

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Y-G Feng1, J-F Zhao, L Xiao

  • 1Department of Urology, Suining Central Hospital, Suining, China. uroygfeng@sina.com.

European Review for Medical and Pharmacological Sciences
|October 20, 2018
PubMed
Abstract

Insights

MicroRNA-19a-3p, a key regulator, inhibits prostate cancer (PCa) cell migration, invasion, and epithelial-mesenchymal transition (EMT). It achieves this by targeting SOX4, offering potential therapeutic strategies for PCa.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Biochemistry

Background:

  • Prostate cancer (PCa) metastasis and epithelial-mesenchymal transition (EMT) are critical processes driving cancer progression.
  • MicroRNAs (miRNAs) play significant roles in regulating various cellular functions, including cancer development.
  • Understanding the specific roles of miRNAs like microRNA-19a-3p in PCa is crucial for developing targeted therapies.

Purpose of the Study:

  • To investigate the function of microRNA-19a-3p in regulating prostate cancer (PCa) cell invasion, metastasis, and EMT.
  • To elucidate the underlying molecular mechanism by which microRNA-19a-3p exerts its effects on PCa cells.

Main Methods:

  • DU145 prostate cancer cells were transfected with microRNA-19a-3p mimic or a negative control.
  • Quantitative Real-time-polymerase chain reaction (qRT-PCR) and Western blot were used to assess expression levels of microRNA-19a-3p and SOX4.
  • Wound healing and transwell assays evaluated cell migration and invasion.
  • Western blot analyzed protein levels of EMT markers (N-cadherin, Vimentin, α-SMA, E-cadherin) and matrix metalloproteinases (MMP2, MMP9).

Main Results:

  • Overexpression of microRNA-19a-3p led to decreased SOX4 protein levels in DU145 cells.
  • Transfection with microRNA-19a-3p mimic significantly inhibited DU145 cell migration and invasion.
  • Key EMT markers (N-cadherin, Vimentin, α-SMA) and MMPs (MMP2, MMP9) were downregulated, while E-cadherin was upregulated, indicating suppression of EMT.

Conclusions:

  • MicroRNA-19a-3p acts as a tumor suppressor in prostate cancer.
  • The inhibitory effects of microRNA-19a-3p on migration, invasion, and EMT are mediated through the suppression of SOX4.
  • MicroRNA-19a-3p represents a potential therapeutic target for inhibiting prostate cancer progression.

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