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HMG-CoA reductase inhibitors (statins) as anticancer drugs (review)
1Department of Toxicology, University of Mainz, D-55131 Mainz, Germany. fritz@uni-mainz.de
Abstract:
Apart from their lipid lowering activity, HMG-CoA reductase inhibitors (statins) impair numerous cellular functions associated with metastasis, e.g. gene expression, angiogenesis, cell adhesion, cell motility and invasiveness. Furthermore, statins have impact on apoptotic cell death and modulate cellular susceptibility to cell killing by anticancer drugs and ionizing radiation. Part of the effects provoked by statins are due to the inhibition of the prenylation of low molecular weight GTPases, in particular Ras and Rho, which play key roles in signaling evoked by stimulation of cell surface receptors. C-terminal lipid modification of Ras/Rho GTPases is essential for their correct intracellular localization and function. By depletion of the cellular pool of isoprene precursor molecules, statins reduce the level of membrane-bound active Ras/Rho proteins, thereby impairing corresponding functions. Since broad clinical experience already exists for statins, their incorporation into established tumor-therapeutic regimens would be realizable in a rather short period of time. Here, data available at present arguing for the usefulness of statins in anticancer therapy are summarized and discussed.
Insights
Statins, known for lowering lipids, also inhibit cancer metastasis by blocking essential cell functions. Their established safety profile suggests potential for integration into cancer treatment regimens.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- HMG-CoA reductase inhibitors (statins) possess anticancer properties beyond lipid reduction.
- Statins affect cellular processes crucial for cancer metastasis, including angiogenesis and cell motility.
- The prenylation of GTPases like Ras and Rho is vital for cell signaling and is inhibited by statins.
Purpose of the Study:
- To review current data supporting the use of statins in cancer therapy.
- To discuss the mechanisms by which statins may inhibit tumor progression and metastasis.
- To evaluate the feasibility of incorporating statins into existing cancer treatment protocols.
Main Methods:
- Review of existing scientific literature on statins and cancer.
- Analysis of molecular mechanisms underlying statin's effects on cancer cells.
- Discussion of clinical implications and potential therapeutic applications.
Main Results:
- Statins inhibit key metastatic processes: gene expression, angiogenesis, cell adhesion, motility, and invasiveness.
- Statins modulate apoptotic cell death and cellular sensitivity to anticancer treatments.
- Inhibition of Ras/Rho GTPase prenylation by statins disrupts critical signaling pathways.
Conclusions:
- Statins demonstrate significant potential as an adjunct therapy in cancer treatment.
- The molecular mechanisms involve interference with GTPase prenylation and downstream signaling.
- Given extensive clinical use, statins could be rapidly integrated into oncological regimens.
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