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| Reactive oxygen species (ROS) are highly reactive molecules that contain oxygen and can lead to oxidative stress in cells. They play a dual role in cancer biology, acting as both promoters and suppressors of cancer. ROS can cause oxidative damage to DNA, leading to mutations that may contribute to cancer initiation and progression. So normally you want to inhibit ROS to prevent cell mutations. However excessive ROS can induce apoptosis (programmed cell death) in cancer cells, potentially limiting tumor growth. Chemotherapy typically raises ROS. -mitochondria is the main source of reactive oxygen species (ROS) (and the ETC is heavily related) "Reactive oxygen species (ROS) are two electron reduction products of oxygen, including superoxide anion, hydrogen peroxide, hydroxyl radical, lipid peroxides, protein peroxides and peroxides formed in nucleic acids 1. They are maintained in a dynamic balance by a series of reduction-oxidation (redox) reactions in biological systems and act as signaling molecules to drive cellular regulatory pathways." "During different stages of cancer formation, abnormal ROS levels play paradoxical roles in cell growth and death 8. A physiological concentration of ROS that maintained in equilibrium is necessary for normal cell survival. Ectopic ROS accumulation promotes cell proliferation and consequently induces malignant transformation of normal cells by initiating pathological conversion of physiological signaling networks. Excessive ROS levels lead to cell death by damaging cellular components, including proteins, lipid bilayers, and chromosomes. Therefore, both scavenging abnormally elevated ROS to prevent early neoplasia and facilitating ROS production to specifically kill cancer cells are promising anticancer therapeutic strategies, in spite of their contradictoriness and complexity." "ROS are the collection of derivatives of molecular oxygen that occur in biology, which can be categorized into two types, free radicals and non-radical species. The non-radical species are hydrogen peroxide (H 2O 2 ), organic hydroperoxides (ROOH), singlet molecular oxygen ( 1 O 2 ), electronically excited carbonyl, ozone (O3 ), hypochlorous acid (HOCl, and hypobromous acid HOBr). Free radical species are super-oxide anion radical (O 2•−), hydroxyl radical (•OH), peroxyl radical (ROO•) and alkoxyl radical (RO•) [130]. Any imbalance of ROS can lead to adverse effects. H2 O 2 and O 2 •− are the main redox signalling agents. The cellular concentration of H2 O 2 is about 10−8 M, which is almost a thousand times more than that of O2 •−". "Radicals are molecules with an odd number of electrons in the outer shell [393,394]. A pair of radicals can be formed by breaking a chemical bond or electron transfer between two molecules." Recent investigations have documented that polyphenols with good antioxidant activity may exhibit pro-oxidant activity in the presence of copper ions, which can induce apoptosis in various cancer cell lines but not in normal cells. "We have shown that such cell growth inhibition by polyphenols in cancer cells is reversed by copper-specific sequestering agent neocuproine to a significant extent whereas iron and zinc chelators are relatively ineffective, thus confirming the role of endogenous copper in the cytotoxic action of polyphenols against cancer cells. Therefore, this mechanism of mobilization of endogenous copper." > Ions could be one of the important mechanisms for the cytotoxic action of plant polyphenols against cancer cells and is possibly a common mechanism for all plant polyphenols. In fact, similar results obtained with four different polyphenolic compounds in this study, namely apigenin, luteolin, EGCG, and resveratrol, strengthen this idea. Interestingly, the normal breast epithelial MCF10A cells have earlier been shown to possess no detectable copper as opposed to breast cancer cells [24], which may explain their resistance to polyphenols apigenin- and luteolin-induced growth inhibition as observed here (Fig. 1). We have earlier proposed [25] that this preferential cytotoxicity of plant polyphenols toward cancer cells is explained by the observation made several years earlier, which showed that copper levels in cancer cells are significantly elevated in various malignancies. Thus, because of higher intracellular copper levels in cancer cells, it may be predicted that the cytotoxic concentrations of polyphenols required would be lower in these cells as compared to normal cells." Majority of ROS are produced as a by-product of oxidative phosphorylation, high levels of ROS are detected in almost all cancers. -It is well established that during ER stress, cytosolic calcium released from the ER is taken up by the mitochondrion to stimulate ROS overgeneration and the release of cytochrome c, both of which lead to apoptosis. Note: Products that may raise ROS can be found using this database, by: Filtering on the target of ROS, and selecting the Effect Direction of ↑ Targets to raise ROS (to kill cancer cells): • NADPH oxidases (NOX): NOX enzymes are involved in the production of ROS. -Targeting NOX enzymes can increase ROS levels and induce cancer cell death. -eNOX2 inhibition leads to a high NADH/NAD⁺ ratio which can lead to increased ROS • Mitochondrial complex I: Inhibiting can increase ROS production • P53: Activating p53 can increase ROS levels(by inducing the expression of pro-oxidant genes) • Nrf2 inhibition: regulates the expression of antioxidant genes. Inhibiting Nrf2 can increase ROS levels • Glutathione (GSH): an antioxidant. Depleting GSH can increase ROS levels • Catalase: Catalase converts H2O2 into H2O+O. Inhibiting catalase can increase ROS levels • SOD1: converts superoxide into hydrogen peroxide. Inhibiting SOD1 can increase ROS levels • PI3K/AKT pathway: regulates cell survival and metabolism. Inhibiting can increase ROS levels • HIF-1α inhibition: regulates genes involved in metabolism and angiogenesis. Inhibiting HIF-1α can increase ROS • Glycolysis: Inhibiting glycolysis can increase ROS levels • Fatty acid oxidation: Cancer cells often rely on fatty acid oxidation for energy production. -Inhibiting fatty acid oxidation can increase ROS levels • ER stress: Endoplasmic reticulum (ER) stress can increase ROS levels • Autophagy: process by which cells recycle damaged organelles and proteins. -Inhibiting autophagy can increase ROS levels and induce cancer cell death. • KEAP1/Nrf2 pathway: regulates the expression of antioxidant genes. -Inhibiting KEAP1 or activating Nrf2 can increase ROS levels and induce cancer cell death. • DJ-1: regulates the expression of antioxidant genes. Inhibiting DJ-1 can increase ROS levels • PARK2: regulates the expression of antioxidant genes. Inhibiting PARK2 can increase ROS levels • SIRT1 inhibition:regulates the expression of antioxidant genes. Inhibiting SIRT1 can increase ROS levels • AMPK activation: regulates energy metabolism and can increase ROS levels when activated. • mTOR inhibition: regulates cell growth and metabolism. Inhibiting mTOR can increase ROS levels • HSP90 inhibition: regulates protein folding and can increase ROS levels when inhibited. • Proteasome: degrades damaged proteins. Inhibiting the proteasome can increase ROS levels • Lipid peroxidation: a process by which lipids are oxidized, leading to the production of ROS. -Increasing lipid peroxidation can increase ROS levels • Ferroptosis: form of cell death that is regulated by iron and lipid peroxidation. -Increasing ferroptosis can increase ROS levels • Mitochondrial permeability transition pore (mPTP): regulates mitochondrial permeability. -Opening the mPTP can increase ROS levels • BCL-2 family proteins: regulate apoptosis and can increase ROS levels when inhibited. • Caspase-independent cell death: a form of cell death that is regulated by ROS. -Increasing caspase-independent cell death can increase ROS levels • DNA damage response: regulates the repair of DNA damage. Increasing DNA damage can increase ROS • Epigenetic regulation: process by which gene expression is regulated. -Increasing epigenetic regulation can increase ROS levels -PKM2, but not PKM1, can be inhibited by direct oxidation of cysteine 358 as an adaptive response to increased intracellular reactive oxygen species (ROS) ProOxidant Strategy:(inhibit the Mevalonate Pathway (likely will also inhibit GPx) -HydroxyCitrate (HCA) found as supplement online and typically used in a dose of about 1.5g/day or more -Atorvastatin typically 40-80mg/day, -Dipyridamole typically 200mg 2x/day Combined effect research -Lycopene typically 100mg/day range (note debatable as it mainly lowers NRF2) Dual Role of Reactive Oxygen Species and their Application in Cancer Therapy ROS-Inducing Interventions in Cancer — Canonical + Mechanistic Reference -generated from AI and Cancer database ROS rating: +++ strong | ++ moderate | + weak | ± mixed | 0 none NRF2: ↓ suppressed | ↑ activated | ± mixed | 0 none Conditions: [D] dose [Fe] metal [M] metabolic [O₂] oxygen [L] light [F] formulation [T] tumor-type [C] combination
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| Cyclooxygenase (COX)-2 overexpression has been noted in various cancers.
PI3Ks/AKT pathways are over-activated in several types of cancers. EGFR altered activity has been noted in various pathological conditions. However, its regulation is an important step in the inhibition of cancer. In this regard, EGCG shows a pivotal role in the inhibition of EGFR activity. Activating protein-1 transcription factor has been associated with pathogenesis including cancer. Activation of the sonic hedgehog (Shh) pathway is required for the growth of numerous tissues and organs and recent evidence indicates that this pathway is often recruited to stimulate growth of cancer stem cells (CSCs) and to orchestrate the reprogramming of cancer cells via epithelial mesenchymal transition (EMT). Increased expression of Nanog has been associated with the aggressive nature of certain cancers, highlighting its role in promoting cancer stem cell characteristics. The aberrant hedgehog (Hh)/GLI signaling pathway causes the formation and progression of a variety of tumors. The process of cell apoptosis is often accompanied by the destruction of mitochondrial transmembrane potential, which is widely regarded as one of the earliest events in the process of cell apoptosis. Human malignancies frequently exhibit mutations in the TGF-β pathway, and overactivation of this system is linked to tumor growth by promoting angiogenesis and inhibiting the innate and adaptive antitumor immune responses50. Several studies have demonstrated that high cyclin D1 expression was observed in cancers including breast, lung, prostate, lymph node and colorectal cancers [23–25]. The oncogene c-myc, which is frequently over-expressed in cancer cells, is involved in the transactivation of most of the glycolytic enzymes including lactate dehydrogenase A (LDHA) and the glucose transporter GLUT1 [51,52]. Thus, c-myc activation is a likely candidate to promote the enhanced glucose uptake and lactate release in the proliferating cancer cell. Vimentin is overexpressed in various epithelial cancers, including prostate cancer, gastrointestinal tumors, tumors of the central nervous system, breast cancer, malignant melanoma, and lung cancer. Vimentin’s overexpression in cancer correlates well with accelerated tumor growth, invasion, and poor prognosis; however, the role of vimentin in cancer progression remains obscure. Heat shock proteins (HSPs) are normally induced under environmental stress to serve as chaperones for maintenance of correct protein folding but they are often overexpressed in many cancers, including breast cancer. Since NQO1 is highly expressed in many solid tumors, including via upregulation of Nrf2, the design of compounds activated by NQO1 and NQO1-targeted drug delivery have been active areas of research. Since increased Nrf2 gene expression is one of the main mechanisms of cancer cells in resisting chemotherapeutic drugs and survival in oxidative conditions; finding compounds with the ability to suppress Nrf2 gene expression with minimum side effects can be considered an important strategy for increasing the sensitivity of cancer cells to chemotherapy. Overexpression of c-met stimulates proliferation, migration and invasion in various types of cancer including prostate cancer. Overexpression of TGFα and EGFR by many carcinomas correlates with the development of cancer metastasis, resistance to chemotherapy and poor prognosis. More than 50% of human cancers have a mutated nonfunctional p53. |
| 5355- | AL, | Mini-review: The health benefits and applications of allicin |
| - | Review, | Var, | NA |
| 2660- | AL, | Allicin: A review of its important pharmacological activities |
| - | Review, | AD, | NA | - | Review, | Var, | NA | - | Review, | Park, | NA | - | Review, | Stroke, | NA |
| 3437- | ALA, | Revisiting the molecular mechanisms of Alpha Lipoic Acid (ALA) actions on metabolism |
| - | Review, | Var, | NA |
| 3443- | ALA, | Molecular and Therapeutic Insights of Alpha-Lipoic Acid as a Potential Molecule for Disease Prevention |
| - | Review, | Var, | NA | - | Review, | AD, | NA |
| 3541- | ALA, | Insights on alpha lipoic and dihydrolipoic acids as promising scavengers of oxidative stress and possible chelators in mercury toxicology |
| - | Review, | Var, | NA |
| 2583- | Api, | Rad, | The influence of apigenin on cellular responses to radiation: From protection to sensitization |
| - | Review, | Var, | NA |
| 5396- | Ash, | Withania Somnifera (Ashwagandha) and Withaferin A: Potential in Integrative Oncology |
| - | Review, | Var, | NA |
| 3166- | Ash, | Exploring the Multifaceted Therapeutic Potential of Withaferin A and Its Derivatives |
| - | Review, | Var, | NA |
| 4814- | ASTX, | Chemopreventive and therapeutic efficacy of astaxanthin against cancer: A comprehensive review |
| - | Review, | Var, | NA |
| 5502- | Ba, | An overview of pharmacological activities of baicalin and its aglycone baicalein: New insights into molecular mechanisms and signaling pathways |
| - | Review, | Var, | NA |
| 5251- | Ba, | The Fascinating Effects of Baicalein on Cancer: A Review |
| - | Review, | Var, | NA |
| 2474- | Ba, | Anticancer properties of baicalein: a review |
| - | Review, | Var, | NA | - | in-vitro, | Nor, | BV2 |
| 2605- | Ba, | BA, | Potential therapeutic effects of baicalin and baicalein |
| - | Review, | Var, | NA | - | Review, | Stroke, | NA | - | Review, | IBD, | NA | - | Review, | Arthritis, | NA | - | Review, | AD, | NA | - | Review, | Park, | NA |
| 2292- | Ba, | BA, | Baicalin and baicalein in modulating tumor microenvironment for cancer treatment: A comprehensive review with future perspectives |
| - | Review, | Var, | NA |
| 2674- | BBR, | Berberine: A novel therapeutic strategy for cancer |
| - | Review, | Var, | NA | - | Review, | IBD, | NA |
| 5631- | BCA, | Perspectives Regarding the Role of Biochanin A in Humans |
| - | Review, | Var, | NA | - | Review, | AD, | NA |
| 5633- | BCA, | Mechanisms Behind the Pharmacological Application of Biochanin-A: A review |
| - | Review, | Var, | NA | - | Review, | AD, | NA |
| 2760- | BetA, | A Review on Preparation of Betulinic Acid and Its Biological Activities |
| - | Review, | Var, | NA | - | Review, | Stroke, | NA |
| 4619- | Bor, | Using Boron Supplementation in Cancer Prevention and Treatment: A Review Article |
| - | Review, | Var, | NA |
| 2776- | Bos, | Anti-inflammatory and anti-cancer activities of frankincense: Targets, treatments and toxicities |
| - | Review, | Var, | NA |
| 2775- | Bos, | The journey of boswellic acids from synthesis to pharmacological activities |
| - | Review, | Var, | NA | - | Review, | AD, | NA | - | Review, | PSA, | NA |
| 2768- | Bos, | Boswellic acids as promising agents for the management of brain diseases |
| - | Review, | Var, | NA | - | Review, | AD, | NA | - | Review, | Park, | NA |
| 5744- | Buty, | PacT, | Oral sodium butyrate supplementation ameliorates paclitaxel-induced behavioral and intestinal dysfunction |
| - | in-vivo, | Var, | NA |
| 5743- | Buty, | Regulation of Intestinal Butyrate Transporters by Oxidative and Inflammatory Status |
| - | Review, | Var, | NA |
| 5742- | Buty, | Butyrate: A Double-Edged Sword for Health? |
| - | Review, | Var, | NA |
| 5751- | CA, | Potential Therapeutic Implications of Caffeic Acid in Cancer Signaling: Past, Present, and Future |
| - | Review, | Var, | NA |
| 2019- | CAP, | Capsaicin: A Two-Decade Systematic Review of Global Research Output and Recent Advances Against Human Cancer |
| - | Review, | Var, | NA |
| 5758- | CAPE, | PBG, | Caffeic acid phenethyl ester and therapeutic potentials |
| - | Review, | Var, | NA |
| 5888- | CAR, | Therapeutic application of carvacrol: A comprehensive review |
| - | Review, | Var, | NA | - | Review, | Stroke, | NA | - | Review, | Diabetic, | NA | - | Review, | Park, | NA |
| 6018- | CGA, | Chlorogenic acid: a review on its mechanisms of anti-inflammation, disease treatment, and related delivery systems |
| - | Review, | Var, | NA | - | Review, | RCC, | NA |
| 6017- | CGA, | Therapeutic Potential of Chlorogenic Acid in Chemoresistance and Chemoprotection in Cancer Treatment |
| - | Review, | Var, | NA |
| 6016- | CGA, | Coffee Chlorogenic Acids Incorporation for Bioactivity Enhancement of Foods: A Review |
| - | Review, | Var, | NA | - | Review, | AD, | NA | - | Review, | Diabetic, | NA |
| 6002- | CGA, | Chlorogenic Acid: A Systematic Review on the Biological Functions, Mechanistic Actions, and Therapeutic Potentials |
| - | Review, | Var, | NA | - | Review, | Diabetic, | NA | - | Review, | AD, | NA | - | Review, | Park, | NA | - | Review, | Stroke, | NA |
| 6001- | Chit, | Recent advances in engineering chitosan-based nanoplatforms in biotherapeutic multi-delivery for multi-targeted disease treatments: Promises and outlooks |
| - | Review, | Var, | HepG2 | - | Review, | AD, | NA |
| 4481- | Chit, | Antioxidant Properties and Redox-Modulating Activity of Chitosan and Its Derivatives: Biomaterials with Application in Cancer Therapy |
| - | Review, | Var, | NA |
| 6088- | CHOC, | Effect of chocolate on older patients with cancer in palliative care: a randomised controlled study |
| - | Trial, | Var, | NA |
| 6086- | CHOC, | Cocoa and Chocolate in Human Health and Disease |
| - | Review, | Var, | NA |
| 6082- | CHOC, | Potential for preventive effects of cocoa and cocoa polyphenols in cancer |
| - | Review, | Var, | NA |
| 2781- | CHr, | PBG, | Chrysin a promising anticancer agent: recent perspectives |
| - | Review, | Var, | NA |
| 2782- | CHr, | Broad-Spectrum Preclinical Antitumor Activity of Chrysin: Current Trends and Future Perspectives |
| - | Review, | Var, | NA | - | Review, | Stroke, | NA | - | Review, | Park, | NA |
| 2784- | CHr, | Chrysin targets aberrant molecular signatures and pathways in carcinogenesis (Review) |
| - | Review, | Var, | NA |
| 2786- | CHr, | Chemopreventive and therapeutic potential of chrysin in cancer: mechanistic perspectives |
| - | Review, | Var, | NA |
| 2788- | CHr, | Chrysin: Sources, beneficial pharmacological activities, and molecular mechanism of action |
| - | Review, | Var, | NA |
| 2790- | CHr, | Chrysin: Pharmacological and therapeutic properties |
| - | Review, | Var, | NA |
| 1576- | Citrate, | Targeting citrate as a novel therapeutic strategy in cancer treatment |
| - | Review, | Var, | NA |
| 4762- | CoQ10, | The role of coenzyme Q10 as a preventive and therapeutic agent for the treatment of cancers |
| - | Review, | Var, | NA |
| 4768- | CoQ10, | Role of coenzymes in cancer metabolism |
| - | Review, | Var, | NA |
| 4769- | CoQ10, | CoQ10 Is Key for Cellular Energy and Cancer Support |
| - | Review, | Var, | NA |
| 4771- | CoQ10, | Coenzyme Q10 Protects Astrocytes from ROS-Induced Damage through Inhibition of Mitochondria-Mediated Cell Death Pathway |
| - | Review, | Var, | NA |
| 5780- | CRMs, | HCAs, | RES, | Sper, | ASA | Caloric Restriction Mimetics against Age-Associated Disease: Targets, Mechanisms, and Therapeutic Potential |
| - | Review, | Var, | NA |
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
Filter Conditions: Pro/AntiFlg:% IllCat:% CanType:26 Cells:% prod#:% Target#:275 State#:% Dir#:1
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