Related Experiment Videos
Antioxidant and anti-proliferative properties of lycopene
Mareike Kelkel1, Marc Schumacher, Mario Dicato
1Laboratoire de Biologie Moléculaire et Cellulaire du Cancer, Hôpital Kirchberg , L-2540 Luxembourg , Luxembourg.
Abstract:
The recent search for new anti-cancer drugs focuses more on natural compounds from the regular human diet because these compounds rarely exhibit severe side-effects yet efficiently act on a wide range of molecular targets involved in carcinogenesis. One promising compound, which is now being tested in clinical studies, is the tomato-derived carotenoid lycopene. This review summarizes the current knowledge about the cellular action of lycopene and presents the molecular targets responsible for its remarkable chemopreventive and anti-proliferative activity. Its antioxidant effects include a considerable reactive oxygen species (ROS) scavenging activity, which allows lycopene to prevent lipid peroxidation and DNA damage. Simultaneously, lycopene induces enzymes of the cellular antioxidant defense systems by activating the antioxidant response element transcription system. As another chemopreventive strategy, lycopene increases gap junctional communication, which is suppressed during carcinogenesis. This review focuses also on the synergistic effects of lycopene with other natural antioxidants that might be important for its future application in anti-cancer treatment. Lastly, this review provides evidence for the biological activity of some oxidized lycopene metabolites, which seem to be partially responsible for the strong and manifold anti-cancer potential of lycopene.
Insights
Lycopene, a tomato compound, shows strong anti-cancer potential by fighting oxidative stress and enhancing cellular defenses. Its metabolites also contribute to its effectiveness in cancer prevention and treatment.
Area of Science:
- Nutritional Biochemistry
- Molecular Oncology
- Natural Product Chemistry
Background:
- Dietary natural compounds are increasingly explored for anti-cancer properties due to fewer side effects.
- Lycopene, a tomato carotenoid, is under clinical investigation for its therapeutic potential.
Purpose of the Study:
- To review the cellular mechanisms and molecular targets of lycopene's chemopreventive and anti-proliferative effects.
- To explore synergistic interactions and the role of lycopene metabolites in anti-cancer activity.
Main Methods:
- Literature review of cellular and molecular studies on lycopene.
- Analysis of lycopene's antioxidant, gene-regulating, and cell communication-modulating activities.
- Examination of synergistic effects with other antioxidants and activity of oxidized metabolites.
Main Results:
- Lycopene scavenges reactive oxygen species (ROS), preventing lipid peroxidation and DNA damage.
- It upregulates cellular antioxidant defenses via the antioxidant response element (ARE) pathway.
- Lycopene enhances gap junctional communication, counteracting a hallmark of carcinogenesis.
Conclusions:
- Lycopene exhibits significant chemopreventive and anti-proliferative effects through multiple molecular mechanisms.
- Synergistic effects and the biological activity of its metabolites enhance its anti-cancer potential.
- Lycopene represents a promising natural compound for integrated cancer treatment strategies.
Related Concept Videos
Abnormal Proliferation
Radical Autoxidation
Cancer Prevention
Some...
Loss of Tumor Suppressor Gene Functions
When the tumor suppressor genes develop mutations or are lost, cells start growing out of control, leading to cancer. However, a single functional copy of the tumor suppressor gene is enough for the cells to maintain their normal functions and cell...
Cancer-Critical Genes II: Tumor Suppressor Genes
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Negative Regulator Molecules