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Beyond COX-inhibition: 'side-effects' of ibuprofen on neoplastic development and progression
1Departamento de Genética Humana, Instituto Nacional de Saúde Doutor Ricardo Jorge, Avenida Padre Cruz, 1649-016 Lisboa, Portugal. peter.jordan@insa.min-saude.pt.
Abstract:
Ibuprofen is a non-steroidal anti-inflammatory drug of generalized use with over-the-counter availability. Population-based studies have provided evidence that its long-term use is associated with a 30-60% decrease in the risk of developing major types of cancer. Initially, the underlying molecular mechanism was thought to be exclusively dependent on its inhibitory effect on cyclooxygenase activity, which is involved in the inflammatory response. However, numerous studies have now shown that the cancer chemopreventive properties of ibuprofen are much more complex and likely involve multiple COX-2-independent effects. Here we review the current knowledge on COX-independent effects of ibuprofen, which affect changes in gene expression or alternative splicing and act through various cell cycle- and apoptosis-regulating pathways, including β-catenin, NF-κB, PPARγ and p53.
Insights
Long-term use of ibuprofen, a common pain reliever, may significantly reduce cancer risk. Its cancer-fighting effects extend beyond inflammation control, involving complex molecular pathways that regulate cell growth and death.
Area of Science:
- Pharmacology
- Oncology
- Molecular Biology
Background:
- Ibuprofen is a widely available non-steroidal anti-inflammatory drug (NSAID).
- Population studies suggest long-term ibuprofen use correlates with a 30-60% reduced risk of major cancers.
- The initial hypothesis focused solely on cyclooxygenase (COX) inhibition for cancer chemoprevention.
Purpose of the Study:
- To review the current understanding of ibuprofen's cancer chemopreventive properties.
- To explore the COX-independent molecular mechanisms underlying ibuprofen's anti-cancer effects.
- To highlight the complex pathways involved in ibuprofen's action.
Main Methods:
- Literature review of existing studies on ibuprofen and cancer.
- Analysis of research investigating molecular mechanisms beyond COX inhibition.
- Synthesis of data on gene expression, alternative splicing, and cell cycle regulation.
Main Results:
- Ibuprofen's cancer chemopreventive effects are multifaceted, involving COX-independent pathways.
- These effects include modulation of gene expression and alternative splicing.
- Ibuprofen influences key cell cycle and apoptosis regulators such as β-catenin, NF-κB, PPARγ, and p53.
Conclusions:
- Ibuprofen exhibits significant cancer chemopreventive potential through complex molecular actions.
- Understanding these COX-independent effects is crucial for developing novel cancer prevention strategies.
- Further research into these pathways could unlock new therapeutic applications for ibuprofen.
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