Tumour suppressor microRNA-584 directly targets oncogene Rock-1 and decreases invasion ability in human clear cell

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In Vivo Inhibition of MicroRNA to Decrease Tumor Growth in Mice
07:02

In Vivo Inhibition of MicroRNA to Decrease Tumor Growth in Mice

Published on: August 23, 2019

K Ueno1, H Hirata, V Shahryari

  • 1Department of Urology, San Francisco Veterans Affairs Medical Center, University of California, San Francisco, 4150 Clement Street, San Francisco, CA 94121, USA.

British Journal of Cancer
|December 2, 2010
PubMed
Abstract

Insights

MicroRNA-584 (miR-584) acts as a novel tumor suppressor in clear cell renal cell carcinoma (ccRCC). It inhibits cancer cell motility by downregulating the ROCK-1 gene, offering potential therapeutic targets.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Clear cell renal cell carcinoma (ccRCC) is a significant health concern.
  • Identifying novel tumor suppressor microRNAs (miRs) is crucial for understanding ccRCC pathogenesis.
  • Understanding miR function and target genes can reveal new therapeutic strategies.

Purpose of the Study:

  • To identify novel tumor suppressor microRNAs (miRs) in clear cell renal cell carcinoma (ccRCC).
  • To perform functional analysis of the suppressive role of identified miRs.
  • To identify specific target genes regulated by these miRs.

Main Methods:

  • Microarray and real-time PCR were used to analyze miR expression in ccRCC cells.
  • Functional assays (viability, invasion, wound healing) assessed miR effects.
  • Target gene identification involved mRNA microarray, target scan algorithms, and 3'UTR luciferase assays.
  • Protein expression was validated by immunohistochemistry in ccRCC tissues.

Main Results:

  • miR-584 expression was significantly downregulated in ccRCC cells compared to normal kidney cells.
  • Transfection with miR-584 reduced ccRCC cell motility, viability, and invasion.
  • ROCK-1 was identified as a direct target gene of miR-584, with miR-584 inhibiting ROCK-1 mRNA and protein expression.
  • Low miR-584 expression correlated with high ROCK-1 protein levels in ccRCC tissues.

Conclusions:

  • miR-584 functions as a novel tumor suppressor in ccRCC.
  • miR-584 inhibits ccRCC cell motility by downregulating ROCK-1.
  • These findings highlight miR-584 as a potential therapeutic target for ccRCC treatment.

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