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Updated: May 2, 2026

RhoC GTPase Activation Assay
Published on: August 22, 2010
HMG-CoA reductase regulates CCL17-induced colon cancer cell migration via geranylgeranylation and RhoA activation
Amr A Al-Haidari1, Ingvar Syk1, Henrik Thorlacius1
1Department of Clinical Sciences, Section of Surgery, Skåne University Hospital, Lund University, Malmö, Sweden.
Background:
Simvastatin is widely used to lower cholesterol levels in patients with cardiovascular diseases, although accumulating evidence suggests that statins, such as simvastatin, also exert numerous anti-tumoral effects.
Aim:
The aim of this study was to examine the effect of simvastatin on colon cancer cell migration.
Methods:
Migration assays were performed to evaluate CCL17-induced colon cancer cell (HT-29) chemotaxis. In vitro tumor growth and apoptosis were assessed using a proliferation assay and annexin V assay, respectively. Active RhoA protein levels in CCL17-stimulated colon cancer cells were quantified using a G-LISA assay.
Results:
We found that simvastatin dose-dependently decreased CCL17-induced colon cancer cell migration. Simvastatin had no effect on colon cancer cell proliferation or apoptosis. Inhibition of beta chemokine receptor 4, CCR4, reduced CCL17-evoked activation of RhoA in colon cancer cells. Moreover, administration of mevalonate reversed the inhibitory effect of simvastatin on CCL17-induced colon cancer cell migration. Interestingly, co-incubation with geranylgeranyl pyrophosphate (GGPP) antagonized the inhibitory impact of simvastatin on colon cancer cell migration triggered by CCL17. Moreover, we observed that simvastatin decreased CCL17-induced activation of RhoA in colon cancer cells. Administration of mevalonate and GGPP reversed the inhibitory effect of simvastatin on CCL17-provoked RhoA activation in colon cancer cells.
Conclusions:
Taken together, our findings show for the first time that HMG-CoA reductase regulates CCL17-induced colon cancer cell migration via inhibition of geranylgeranylation and RhoA activation. Thus, statins, such as simvastatin, might be effective tools to antagonize CCL17-dependent migration and metastasis of colon cancer cells.
Insights
Simvastatin, a cholesterol-lowering drug, was found to inhibit colon cancer cell migration by affecting RhoA activation. This suggests statins could be potential tools against colon cancer metastasis.
Area of Science:
- Oncology
- Molecular Biology
- Pharmacology
Background:
- Simvastatin is a widely used cholesterol-lowering drug.
- Emerging evidence indicates statins possess anti-tumoral properties.
- The specific anti-cancer mechanisms of simvastatin require further elucidation.
Purpose of the Study:
- To investigate the effect of simvastatin on colon cancer cell migration.
- To explore the underlying molecular mechanisms of simvastatin's action on colon cancer cells.
Main Methods:
- Colon cancer cell migration was assessed using chemotaxis assays.
- In vitro proliferation and apoptosis were evaluated.
- Active RhoA protein levels were quantified using G-LISA assays.
Main Results:
- Simvastatin dose-dependently inhibited CCL17-induced colon cancer cell migration.
- Simvastatin did not affect colon cancer cell proliferation or apoptosis.
- Simvastatin reduced CCL17-induced RhoA activation, an effect reversed by mevalonate and geranylgeranyl pyrophosphate (GGPP).
Conclusions:
- HMG-CoA reductase inhibition by simvastatin regulates colon cancer cell migration via geranylgeranylation and RhoA activation.
- Simvastatin may serve as a therapeutic agent to impede CCL17-dependent colon cancer cell migration and metastasis.
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