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Updated: Jul 19, 2026

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

Snail silencing effectively suppresses tumour growth and invasiveness

D Olmeda1, M Jordá, H Peinado

  • 1Departamento de Bioquímica, Instituto de Investigaciones Biomédicas Alberto Sols CSIC-UAM, c/Arturo Duperier, Madrid, Spain.

Oncogene
|October 18, 2006
PubMed

Insights

Silencing the Snail transcription factor halts tumor invasion and progression. RNA interference targeting Snail effectively inhibits tumor growth, differentiation, and spread, suggesting its therapeutic potential for anti-invasive cancer therapies.

Area of Science:

  • Oncology
  • Molecular Biology
  • Cell Biology

Background:

  • The Snail transcription factor is implicated in tumor invasion via E-cadherin downregulation and epithelial-mesenchymal transitions (EMT).
  • Snail's role in promoting cancer progression makes it a potential therapeutic target.

Purpose of the Study:

  • To investigate the therapeutic potential of targeting the Snail transcription factor.
  • To evaluate the efficacy of RNA interference in blocking Snail function and its impact on tumor progression.

Main Methods:

  • Stable RNA interference was used to silence Snail in MDCK-Snail cells and carcinoma cell lines.
  • Tumor growth, differentiation, and expression of invasion markers (MMP-9, angiogenic markers) were assessed in vivo.

Main Results:

  • Silencing Snail induced a mesenchymal-to-epithelial transition (MET), upregulating E-cadherin and inhibiting invasion in cell lines.
  • In vivo, stable Snail interference significantly reduced tumor growth, enhanced differentiation, and decreased MMP-9 and angiogenic marker expression.
  • RNA interference effectively blocked Snail function, reducing invasiveness.

Conclusions:

  • Targeting Snail with RNA interference is a viable strategy to inhibit tumor invasion and progression.
  • Snail silencing leads to MET, reduced tumor growth, and decreased invasiveness, supporting its application in anti-invasive therapies.

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