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Changes of cytoskeleton and cell cycle in Lovo cells via deletion of Rac1

Fang Nie1, Shi-Yi Zhao2, Fei-Xue Song3

  • 1Department of Medical Ultrasonics, The Second Hospital of Lanzhou University, Lanzhou, Gansu, China.

Cancer Biomarkers : Section a of Disease Markers
|August 30, 2014
PubMed
Abstract

Insights

Rac1 is overexpressed in colorectal cancer. Depleting Rac1 in human colorectal cancer cells (Lovo) halts cell cycle progression and increases apoptosis, suggesting Rac1 is a therapeutic target.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Oncology

Background:

  • Rac1 regulates critical cellular functions like actin cytoskeleton organization, cell migration, cell cycle progression, and cell survival.
  • Limited knowledge exists regarding Rac1 expression and its specific roles in human colorectal cancer cell cycle and survival.

Purpose of the Study:

  • To investigate the impact of Rac1 depletion on cytoskeleton organization and cell cycle progression in Lovo human colorectal cancer cells using RNA interference.

Main Methods:

  • Western blotting was employed to detect Rac1 protein levels in colorectal cancer cells and tissues.
  • Rac1 expression was specifically silenced in Lovo cells using Rac1-shRNA (short hairpin RNA).

Main Results:

  • Rac1 protein was found to be overexpressed in human colorectal cancer cells and tissues.
  • RNA interference-mediated depletion of Rac1 significantly prolonged cell cycle progression in Lovo cells.
  • Rac1 depletion enhanced apoptosis in Lovo cells in vitro.

Conclusions:

  • Rac1 depletion using RNA interference effectively arrests Lovo cells in the G0/G1 phase of the cell cycle.
  • The study concludes that Rac1 depletion induces apoptosis in Lovo cells.
Keywords:
CytoskeletonRNA interferenceRac1cell apoptosiscell cycle

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