Features: |
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. -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 |
3633- | BBR, | LT, | Croc, | QC, | Naturally Occurring Acetylcholinesterase Inhibitors and Their Potential Use for Alzheimer's Disease Therapy |
- | Review, | AD, | NA |
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 |
26- | EGCG, | QC, | docx, | Green tea and quercetin sensitize PC-3 xenograft prostate tumors to docetaxel chemotherapy |
- | vitro+vivo, | Pca, | PC3 |
24- | EGCG, | GEN, | QC, | Targeting CWR22Rv1 prostate cancer cell proliferation and gene expression by combinations of the phytochemicals EGCG, genistein and quercetin |
- | in-vitro, | Pca, | 22Rv1 |
2458- | EGCG, | QC, | Identification of plant-based hexokinase 2 inhibitors: combined molecular docking and dynamics simulation studies |
- | Analysis, | Nor, | NA |
2642- | Flav, | QC, | Api, | KaempF, | MCT | In Vitro–In Vivo Study of the Impact of Excipient Emulsions on the Bioavailability and Antioxidant Activity of Flavonoids: Influence of the Carrier Oil Type |
- | in-vitro, | Nor, | NA | - | in-vivo, | Nor, | NA |
1997- | Myr, | QC, | Inhibition of Mammalian thioredoxin reductase by some flavonoids: implications for myricetin and quercetin anticancer activity |
- | in-vitro, | Lung, | A549 |
981- | NarG, | QC, | Anti-estrogenic and anti-aromatase activities of citrus peels major compounds in breast cancer |
- | in-vivo, | NA, | NA |
907- | QC, | A Comprehensive Study on the Anti-cancer Effects of Quercetin and Its Epigenetic Modifications in Arresting Progression of Colon Cancer Cell Proliferation |
- | Review, | NA, | NA |
2300- | QC, | Flavonoids Targeting HIF-1: Implications on Cancer Metabolism |
- | Review, | Var, | NA |
2303- | QC, | doxoR, | Quercetin greatly improved therapeutic index of doxorubicin against 4T1 breast cancer by its opposing effects on HIF-1α in tumor and normal cells |
- | in-vitro, | BC, | 4T1 | - | in-vivo, | NA, | NA |
2338- | QC, | Quercetin: A Flavonoid with Potential for Treating Acute Lung Injury |
- | Review, | Nor, | NA |
2339- | QC, | Quercetin protects against LPS-induced lung injury in mice via SIRT1-mediated suppression of PKM2 nuclear accumulation |
- | in-vivo, | Nor, | NA |
2340- | QC, | Oral Squamous Cell Carcinoma Cells with Acquired Resistance to Erlotinib Are Sensitive to Anti-Cancer Effect of Quercetin via Pyruvate Kinase M2 (PKM2) |
- | in-vitro, | OS, | NA |
2341- | QC, | Quercetin suppresses the mobility of breast cancer by suppressing glycolysis through Akt-mTOR pathway mediated autophagy induction |
- | in-vitro, | BC, | MCF-7 | - | in-vitro, | BC, | MDA-MB-231 | - | in-vivo, | NA, | NA |
2342- | QC, | Quercetin Inhibits the Proliferation of Glycolysis-Addicted HCC Cells by Reducing Hexokinase 2 and Akt-mTOR Pathway |
- | in-vitro, | HCC, | Bel-7402 | - | in-vitro, | HCC, | SMMC-7721 cell | - | in-vivo, | NA, | NA |
2343- | QC, | Pharmacological Activity of Quercetin: An Updated Review |
- | Review, | Nor, | NA |
2344- | QC, | Quercetin: A natural solution with the potential to combat liver fibrosis |
- | Review, | Nor, | NA |
2431- | QC, | The Protective Effect of Quercetin against the Cytotoxicity Induced by Fumonisin B1 in Sertoli Cells |
- | in-vitro, | Nor, | TM4 |
908- | QC, | Molecular Targets Underlying the Anticancer Effects of Quercetin: An Update |
- | Review, | NA, | NA |
3606- | QC, | The Effect of Quercetin on Inflammatory Factors and Clinical Symptoms in Women with Rheumatoid Arthritis: A Double-Blind, Randomized Controlled Trial |
- | Trial, | Arthritis, | NA |
3334- | QC, | Pharmacokinetics of Quercetin Absorption from Apples and Onions in Healthy Humans |
- | Trial, | Nor, | NA |
3335- | QC, | Recent advances on the improvement of quercetin bioavailability |
- | Review, | NA, | NA |
3336- | QC, | Neuroprotective Effects of Quercetin in Alzheimer’s Disease |
- | Review, | AD, | NA |
3337- | QC, | Endoplasmic Reticulum Stress-Relieving Effect of Quercetin in Thapsigargin-Treated Hepatocytes |
- | in-vitro, | NA, | HepG2 |
3338- | QC, | Quercetin: Its Antioxidant Mechanism, Antibacterial Properties and Potential Application in Prevention and Control of Toxipathy |
- | Review, | Var, | NA | - | Review, | Stroke, | NA |
3339- | QC, | Quercetin suppresses ROS production and migration by specifically targeting Rac1 activation in gliomas |
- | in-vitro, | GBM, | C6 | - | in-vitro, | GBM, | IMR32 |
3340- | QC, | Quercetin regulates inflammation, oxidative stress, apoptosis, and mitochondrial structure and function in H9C2 cells by promoting PVT1 expression |
- | in-vitro, | Nor, | H9c2 |
3341- | QC, | Antioxidant Activities of Quercetin and Its Complexes for Medicinal Application |
- | Review, | Var, | NA | - | Review, | Stroke, | 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 |