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| Lycopene is a naturally occurring carotenoid found predominantly in tomatoes and other red fruits and vegetables. Antioxidant Properties: -Lycopene is a powerful antioxidant. It helps neutralize free radicals, which can reduce oxidative stress—a factor implicated in cancer development. Possible concern about interfering with chemotherapy and radiation therapy. However this review disagrees. Inflammation Reduction: -Some studies suggest that lycopene may help lower levels of inflammation, another process linked to cancer progression At supraphysiological or extremely high concentrations, lycopene may have the potential to switch from an antioxidant to a prooxidant role -The prooxidant effect of lycopene has been observed under conditions of high oxygen tension. In vitro studies have suggested that in environments with elevated oxygen levels, lycopene might promote rather than neutralize the production of reactive oxygen species (ROS). -The presence of metal ions (such as iron or copper) in the environment can catalyze reactions where antioxidants, including lycopene, contribute to oxidative processes. These metals can interact with lycopene, potentially leading to the formation of radicals. The mevalonate pathway produces cholesterol and a variety of isoprenoids, which are important for maintaining cell membrane integrity, protein prenylation, and other essential cellular functions. -One of the primary enzymes in this pathway is HMG-CoA reductase (3-hydroxy-3-methylglutaryl-coenzyme A reductase), which is the target of statin drugs used for lowering cholesterol. Some studies suggest that lycopene might downregulate the activity of HMG-CoA reductase or other enzymes in the mevalonate pathway. By doing so, lycopene could potentially reduce the synthesis of cholesterol and isoprenoids that are necessary for rapid cell proliferation—an especially relevant aspect in cancer cells. Lycopene typically used in a 100mg/day range for cancer (inhibition of the the Melavonate Pathway) -also has antiplatelet aggregation capability. -Note half-life 16–20 days. BioAv Heat processing, especially when combined with a small amount of fat, significantly enhances lycopene’s bioaccessibility and absorption. (20% under optimal conditions) Pathways: - ROS usually goes down, but may go up or down depending on dose and environment. Lycopene may also be modified to be a "oxdiative product" which may change the behaviour. - Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑, - lowers Inflammation : NF-kB↓, COX2↓, p38↓, Pro-Inflammatory Cytokines : NLRP3↓, IL-1β↓, TNF-α↓, IL-6↓, IL-8↓ - inhibit Growth/Metastases : EMT↓, MMPs↓, MMP9↓, IGF-1↓, uPA↓, VEGF↓, ROCK1↓, FAK↓, RhoA↓, NF-κB↓, ERK↓ - reactivate genes thereby inhibiting cancer cell growth : EZH2↓, P53↑, Sp proteins↓, - cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, - inhibits Migration/Invasion : TumCMig↓, TumCI↓, TNF-α↓, FAK↓, ERK↓, EMT↓, - inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Integrins↓, - Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK, ERK↓, JNK, - SREBP (related to cholesterol). - Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, RadioProtective, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective, - Selectivity: Cancer Cells vs Normal Cells
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| NOX4 (NADPH oxidase 4) is a member of the NADPH oxidase (NOX) family of enzymes, which are responsible for generating reactive oxygen species (ROS) in various cell types. NOX4 is regulated by hypoxia, which can activate its expression and activity. NOX4 (NADPH oxidase 4) is an enzyme that produces reactive oxygen species (ROS), particularly hydrogen peroxide (H₂O₂). NOX4 is a cytoplasmic enzyme that catalyzes the transfer of electrons from NADPH to oxygen, resulting in the production of superoxide anion (O2-) and other ROS. NOX4 is expressed in a variety of tissues, including the kidney, lung, and vascular smooth muscle cells. NOX4 is generally expressed in cancer. In general, high NOX4 expression is associated with: Poor prognosis Increased tumor size Metastasis Resistance to chemotherapy and radiation therapy Poor response to treatment Low NOX4 expression is associated with: Better prognosis Smaller tumor size Less metastasis Better response to chemotherapy and radiation therapy Better response to treatment The combination of NOX4-driven ROS and available iron can lead to a synergistic increase in oxidative stress, setting the stage for ferroptotic cell death. |
| 3268- | Lyco, | Lycopene as a Natural Antioxidant Used to Prevent Human Health Disorders |
| - | Review, | AD, | NA |
| 3264- | Lyco, | Pharmacological potentials of lycopene against aging and aging‐related disorders: A review |
| - | Review, | Var, | NA | - | Review, | AD, | NA | - | Review, | Stroke, | NA |
| 3534- | QC, | Lyco, | Synergistic protection of quercetin and lycopene against oxidative stress via SIRT1-Nox4-ROS axis in HUVEC cells |
| - | in-vitro, | Nor, | HUVECs |
Query results interpretion may depend on "conditions" listed in the research papers. Such Conditions may include : -low or high Dose -format for product, such as nano of lipid formations -different cell line effects -synergies with other products -if effect was for normal or cancerous cells
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