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Updated: May 9, 2026

MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR (qPCR)
08:30

MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR (qPCR)

Published on: May 16, 2012

A dosage-dependent pleiotropic role of Dicer in prostate cancer growth and metastasis

B Zhang1, H Chen1, L Zhang1

  • 1Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA.

Oncogene
|July 16, 2013
PubMed

Insights

Dicer enzyme

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Biochemistry

Background:

  • Dicer, an RNase III enzyme, is crucial for microRNA maturation.
  • Dicer's role as a tumor suppressor is suggested by its downregulation in some cancers.
  • Its function in prostate cancer remains incompletely understood.

Purpose of the Study:

  • To investigate the role of Dicer in prostate cancer growth and metastasis.
  • To determine the impact of Dicer activity levels on prostate cancer progression.
  • To elucidate the mechanisms underlying Dicer's effects in prostate cancer.

Main Methods:

  • Knockdown of Dicer expression in human prostate cancer cell lines.
  • Analysis of Dicer's effect on cell growth, migration, and tumorigenicity.
  • Utilizing a Pten null mouse model to study Dicer ablation and hemizygous loss in prostate cancer.
  • Assessing apoptosis and senescence markers (P16/INK4a, P27/Kip1).

Main Results:

  • Dicer knockdown suppressed growth but enhanced migration in some prostate cancer cells.
  • Dicer is upregulated in human prostate cancer, with lower expression linked to shorter recurrence times.
  • Complete Dicer ablation halted tumor growth in a Pten null model.
  • Hemizygous Dicer loss reduced tumor burden but increased invasiveness and obstruction.

Conclusions:

  • Dicer exhibits context- and dosage-dependent roles in prostate tumorigenesis.
  • MicroRNAs processed by Dicer are critical for maintaining cancer cell fitness.
  • Disrupting Dicer activity can induce apoptosis and senescence, impacting tumor progression.

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