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| Plant pigment (flavonoid) found in red wine, onions, green tea, apples and berries. Quercetin is thought to contribute to anticancer effects through several mechanisms: -Antioxidant Activity: -Induction of Apoptosis:modify Bax:Bcl-2 ratio -Anti-inflammatory Effects: -Cell Cycle Arrest: -Inhibition of Angiogenesis and Metastasis: (VEGF) Cellular Pathways: -PI3K/Akt/mTOR Pathway: central to cell proliferation, survival, and metabolism. -MAPK/ERK Pathway: influencing cell proliferation, differentiation, and apoptosis. -NF-κB Pathway: downregulate NF-κB -JAK/STAT Pathway: interfere with the activation of STAT3 -Apoptotic Pathways: intrinsic (mitochondrial) and extrinsic (death receptor-mediated) pathways Quercetin has been used at doses around 500–1000 mg per day Quercetin’s bioavailability from foods or standard supplements can be low. EMIQ bioavialability is about 3X that of Quercetin (Example Natural Factors brand) Isoquercitrin is high bioaviability and efficiacy but at this time does not seem available as supplement. -Note half-life 11 to 28 hours. BioAv low 1-10%, poor water-solubility, consuming with fat may improve bioavialability. also piperine or VitC. Pathways: - induce ROS production in cancer cells (higher dose). Typicallys Lowers ROS in normal cells(unless it is high dose?)or depends on Redox status?. "quercetin paradox" - ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓, Prx, - Confusing info about Lowering AntiOxidant defense in Cancer Cells: NRF2↓(some contrary), TrxR↓**, SOD↓(contrary), GSH↓ Catalase↓(contrary), HO1↓(some contrary), GPx↓(some contrary) - 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 : TumMeta↓, TumCG↓, EMT↓, MMPs↓, MMP2↓, MMP9↓, TIMP2, IGF-1↓, uPA↓, VEGF↓, ROCK1↓, FAK↓, NF-κB↓, CXCR4↓, SDF1↓, TGF-β↓, α-SMA↓, ERK↓ - reactivate genes thereby inhibiting cancer cell growth : HDAC↓, DNMTs↓, EZH2↓, P53↑, HSP↓, Sp proteins↓, TET↑ - cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, CDK6↓, - inhibits Migration/Invasion : TumCMig↓, TumCI↓, TNF-α↓, FAK↓, ERK↓, EMT↓, TOP1↓, TET1, - inhibits glycolysis and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, GLUT1↓, LDH↓, LDHA↓, HK2↓, PFKs↓, PDKs↓, ECAR↓, OXPHOS↓, GRP78↑, GlucoseCon↓ - inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, FGF↓, PDGF↓, EGFR↓, - some indication of inhibiting Cancer Stem Cells : CSC↓, CK2↓, Hh↓, CD24↓, β-catenin↓, Notch2↓, - Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK, α↓, 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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| Source: |
| Type: type of cell death |
| Situation in which a cell actively pursues a course toward death upon receiving certain stimuli. Cancer is one of the scenarios where too little apoptosis occurs, resulting in malignant cells that will not die. |
| 6682- | DCA, | QC, | Dichloroacetate and Quercetin Prevent Cell Proliferation, Induce Cell Death and Slow Tumor Growth in a Mouse Model of HPV-Positive Head and Neck Cancer |
| - | in-vivo, | HNSCC, | MEER |
| 25- | EGCG, | QC, | Quercetin Increased the Antiproliferative Activity of Green Tea Polyphenol (-)-Epigallocatechin Gallate in Prostate Cancer Cells |
| - | in-vitro, | Pca, | PC3 | - | in-vitro, | Pca, | LNCaP |
| 910- | QC, | The Anti-Cancer Effect of Quercetin: Molecular Implications in Cancer Metabolism |
| 912- | QC, | 2DG, | Selected polyphenols potentiate the apoptotic efficacy of glycolytic inhibitors in human acute myeloid leukemia cell lines. Regulation by protein kinase activities |
| 894- | QC, | The antioxidant, rather than prooxidant, activities of quercetin on normal cells: quercetin protects mouse thymocytes from glucose oxidase-mediated apoptosis |
| - | in-vitro, | Nor, | NA |
| 1201- | QC, | Quercetin: a silent retarder of fatty acid oxidation in breast cancer metastasis through steering of mitochondrial CPT1 |
| - | in-vivo, | BC, | NA |
| 923- | QC, | Quercetin as an innovative therapeutic tool for cancer chemoprevention: Molecular mechanisms and implications in human health |
| - | Review, | Var, | NA |
| 919- | QC, | Quercetin Regulates Sestrin 2-AMPK-mTOR Signaling Pathway and Induces Apoptosis via Increased Intracellular ROS in HCT116 Colon Cancer Cells |
| - | in-vitro, | CRC, | HCT116 |
| 916- | QC, | Quercetin and cancer: new insights into its therapeutic effects on ovarian cancer cells |
| - | Review, | Ovarian, | NA |
| 914- | QC, | Quercetin and Cancer Chemoprevention |
| - | Review, | NA, | NA |
| - | in-vitro, | Pca, | pCSCs |
| 55- | QC, | Quercetin inhibits the growth of human gastric cancer stem cells by inducing mitochondrial-dependent apoptosis through the inhibition of PI3K/Akt signaling |
| - | in-vitro, | GC, | GCSCs |
| - | in-vitro, | BC, | MDA-MB-231 |
| 62- | QC, | GoldNP, | Gold nanoparticles-conjugated quercetin induces apoptosis via inhibition of EGFR/PI3K/Akt-mediated pathway in breast cancer cell lines (MCF-7 and MDA-MB-231) |
| - | in-vitro, | BC, | MCF7 | - | in-vitro, | BC, | MDA-MB-231 |
| 63- | QC, | Quercetin facilitates cell death and chemosensitivity through RAGE/PI3K/AKT/mTOR axis in human pancreatic cancer cells |
| - | in-vitro, | Pca, | NA |
| 36- | QC, | Quercetin induces G2 phase arrest and apoptosis with the activation of p53 in an E6 expression-independent manner in HPV-positive human cervical cancer-derived cells |
| - | in-vitro, | Cerv, | HeLa | - | in-vitro, | Cerv, | SiHa |
| 40- | QC, | Quercetin arrests G2/M phase and induces caspase-dependent cell death in U937 cells |
| - | in-vitro, | lymphoma, | U937 |
| 44- | QC, | Preclinical Colorectal Cancer Chemopreventive Efficacy and p53-Modulating Activity of 3′,4′,5′-Trimethoxyflavonol, a Quercetin Analog |
| - | in-vivo, | CRC, | HCT116 |
| 45- | QC, | Quercetin Inhibit Human SW480 Colon Cancer Growth in Association with Inhibition of Cyclin D1 and Survivin Expression through Wnt/β-Catenin Signaling Pathway |
| - | in-vitro, | Colon, | CX-1 | - | in-vitro, | Colon, | SW480 | - | in-vitro, | Colon, | HT-29 | - | in-vitro, | Colon, | HCT116 |
| 50- | QC, | Anticancer effect and mechanism of polymer micelle-encapsulated quercetin on ovarian cancer |
| - | vitro+vivo, | Ovarian, | A2780S |
| 86- | QC, | PacT, | Quercetin regulates insulin like growth factor signaling and induces intrinsic and extrinsic pathway mediated apoptosis in androgen independent prostate cancer cells (PC-3) |
| - | vitro+vivo, | Pca, | PC3 |
| 88- | QC, | PacT, | Quercetin Enhanced Paclitaxel Therapeutic Effects Towards PC-3 Prostate Cancer Through ER Stress Induction and ROS Production |
| - | vitro+vivo, | Pca, | PC3 |
| 84- | QC, | Quercetin-induced growth inhibition and cell death in prostatic carcinoma cells (PC-3) are associated with increase in p21 and hypophosphorylated retinoblastoma proteins expression |
| - | in-vitro, | Pca, | PC3 |
| 78- | QC, | Effects of quercetin on insulin-like growth factors (IGFs) and their binding protein-3 (IGFBP-3) secretion and induction of apoptosis in human prostate cancer cells |
| - | in-vitro, | Pca, | PC3 |
| 4787- | QC, | Quercetin: A Phytochemical with Pro-Apoptotic Effects in Colon Cancer Cells |
| - | Review, | CRC, | NA |
| 5031- | QC, | Different roles of Nrf2 and NFKB in the antioxidant imbalance produced by esculetin or quercetin on NB4 leukemia cells |
| - | in-vitro, | AML, | APL NB4 |
| 3353- | QC, | Quercetin triggers cell apoptosis-associated ROS-mediated cell death and induces S and G2/M-phase cell cycle arrest in KON oral cancer cells |
| - | in-vitro, | Oral, | KON | - | in-vitro, | Nor, | MRC-5 |
| 3347- | QC, | Recent Advances in Potential Health Benefits of Quercetin |
| - | Review, | Var, | NA | - | Review, | AD, | NA |
| 3346- | QC, | Regulation of the Intracellular ROS Level Is Critical for the Antiproliferative Effect of Quercetin in the Hepatocellular Carcinoma Cell Line HepG2 |
| - | in-vitro, | Liver, | HepG2 | - | in-vitro, | Liver, | HUH7 |
| 3343- | QC, | Quercetin, a Flavonoid with Great Pharmacological Capacity |
| - | Review, | Var, | NA | - | Review, | AD, | NA | - | Review, | Arthritis, | NA |
| 3371- | QC, | Quercetin induces MGMT+ glioblastoma cells apoptosis via dual inhibition of Wnt3a/β-Catenin and Akt/NF-κB signaling pathways |
| - | in-vitro, | GBM, | T98G |
| 3376- | QC, | Inhibiting CDK6 Activity by Quercetin Is an Attractive Strategy for Cancer Therapy |
| - | in-vitro, | BC, | MCF7 | - | in-vitro, | Lung, | A549 |
| 3374- | QC, | Therapeutic effects of quercetin in oral cancer therapy: a systematic review of preclinical evidence focused on oxidative damage, apoptosis and anti-metastasis |
| - | Review, | Oral, | NA | - | Review, | AD, | NA |
| 3373- | QC, | The Effect of Quercetin in the Yishen Tongluo Jiedu Recipe on the Development of Prostate Cancer through the Akt1-related CXCL12/ CXCR4 Pathway |
| - | in-vitro, | Pca, | DU145 |
| 3362- | QC, | The effect of quercetin on cervical cancer cells as determined by inducing tumor endoplasmic reticulum stress and apoptosis and its mechanism of action |
| - | in-vitro, | Cerv, | HeLa |
| 1309- | TQ, | QC, | Thymoquinone and quercetin induce enhanced apoptosis in non-small cell lung cancer in combination through the Bax/Bcl2 cascade |
| - | in-vitro, | Lung, | 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
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