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| Luteolin a Flavonoid found in celery, parsley, broccoli, onion leaves, carrots, peppers, cabbages, apple skins, and chrysanthemum flowers. -MDR1 expression, MMP-9, IGF-1 and Epithelial to mesenchymal transition. Luteolin — a naturally occurring polyhydroxylated flavone (3′,4′,5,7-tetrahydroxyflavone) found in celery, parsley, peppers, broccoli and numerous medicinal plants. It is a dietary phytochemical and experimental small-molecule anticancer/anti-inflammatory agent rather than an approved anticancer drug. Standard abbreviation: LUT or Lut. Luteolin occurs as the free aglycone and as plant glycosides; after oral administration, circulating luteolin is dominated by glucuronide and sulfate conjugates rather than free aglycone. Its cancer pharmacology is pleiotropic and strongly model-dependent, with particularly recurrent effects on PI3K/AKT/mTOR, NF-κB, STAT3, redox regulation, mitochondrial apoptosis, EMT/invasion and cell-cycle control. Primary mechanisms (ranked):
Bioavailability / PK relevance: Oral luteolin has poor aqueous solubility and unfavorable systemic availability of unconjugated aglycone. It is absorbed from the intestine but undergoes extensive intestinal and hepatic glucuronidation and sulfation. Animal studies report low absolute bioavailability of free luteolin, commonly in the low-single-digit to low-tens percentage range depending on formulation and analytical definition. Nanoemulsions, lipid/phospholipid systems, cyclodextrins, nanoparticles and other delivery systems can substantially improve exposure experimentally. Luteolin and particularly some circulating conjugates can interact with OATP1B1/OATP2B1 transporters; in-vitro CYP inhibition has also been reported, making pharmacokinetic drug interactions plausible at sufficiently high exposure. In-vitro vs systemic exposure relevance: Many anticancer experiments use approximately 10–100 µM luteolin, often 20–50 µM or higher. These concentrations generally exceed sustained concentrations of free luteolin expected after conventional oral dietary or supplemental dosing because extensive conjugation limits circulating aglycone. Consequently, direct translation of many cell-culture IC50 values to standard oral supplementation is weak. Local gastrointestinal exposure, metabolites, tissue deconjugation and optimized formulations may partly alter this limitation. Clinical evidence status: Predominantly preclinical, but no longer exclusively preclinical. A 2025 single-arm phase I study administered luteolin 50 mg/day for six months to five men with localized prostate cancer undergoing active surveillance; no treatment-related adverse events were reported, but the study was far too small and uncontrolled to establish anticancer efficacy. A larger phase II single-arm multicenter Japanese study of 50 mg/day for one year is currently recruiting with a planned enrollment of 40 patients. Luteolin is therefore best categorized as early-human/phase I–II investigational evidence, not established cancer therapy. Preclinical evidence for chemotherapy and radiotherapy sensitization is substantial but remains cancer-, drug- and genotype-dependent. -Note half-life 2–3 hours BioAv low, but could be improved with Res, or blend of castor oil, kolliphor and polyethylene glycol Pathways: - induce ROS production in cancer cell but a few reports of reduction. Always seems to reduce ROS in normal cells. - ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓ - Lowers AntiOxidant defense in Cancer Cells: NRF2↓, SOD↓, GSH↓ Catalase↓ HO1↓ GPx↓ - Raises AntiOxidant defense in Normal Cells: ROS↓, NRF2↑, SOD↑, GSH↑, Catalase↑, - lowers Inflammation : NF-kB↓, COX2↓, p38↓, Pro-Inflammatory Cytokines : IL-1β↓, TNF-α↓, IL-6↓, - inhibit Growth/Metastases : TumMeta↓, TumCG↓, EMT↓, MMP2↓, MMP9↓, TIMP2, IGF-1↓, VEGF↓, FAK↓, RhoA↓, NF-κB↓, CXCR4↓, ERK↓ - reactivate genes thereby inhibiting cancer cell growth : HDAC↓, DNMT1↓, DNMT3A↓, EZH2↓, P53↑, HSP↓, - cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, CDK6↓, - inhibits Migration/Invasion : TumCMig↓, FAK↓, ERK↓, EMT↓, TOP1↓, TET1↓, - inhibits glycolysis and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, LDHA↓, HK2↓, GRP78↑, - inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, Notch↓, PDGF↓, EGFR↓, Integrins↓, - Others: PI3K↓, AKT↓, STAT↓, Wnt↓, β-catenin↓, AMPK, ERK↓, JNK, TrxR**, - Shown to modulate the nuclear translocation of SREBP-2 (related to cholesterol). - Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, Others(review target notes), Neuroprotective, Renoprotection, Hepatoprotective, CardioProtective, - Selectivity: Cancer Cells vs Normal Cells -"Additionally, when reacted with concentrated sulfuric acid, a zinc salt is produced, resulting in a dark red and yellow solution. These color changes serve as a strong basis for the identification of luteolin" Common Dietary and Plant Sources of Luteolin
Luteolin — Cancer Mechanisms
P: 0–30 min R: 30 min–3 hr G: >3 hr Luteolin — Alzheimer’s disease relevance: Luteolin has substantial preclinical neuroprotective evidence and is sufficiently relevant to Alzheimer’s disease to warrant a separate database section. Reported effects include ↓ amyloid-β production/accumulation, ↓ BACE1-associated amyloidogenic processing, ↓ tau hyperphosphorylation, ↓ neuroinflammation, ↓ oxidative stress, ↓ NLRP3/NF-κB signaling and ↑ BDNF/TrkB-associated neuroplasticity. Acetylcholinesterase inhibition has also been reported. However, evidence remains predominantly cellular and animal; convincing disease-modifying clinical evidence in Alzheimer’s disease is absent. Oral bioavailability and blood-brain exposure of free luteolin remain important translational constraints. Clinical evidence status: Preclinical. Contemporary reviews identify Alzheimer’s disease as the neurodegenerative disorder in which luteolin has been studied most extensively, but explicitly note that clinical therapeutic evidence remains deficient. Luteolin — Alzheimer’s Disease Mechanisms
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| The effectiveness of chemotherapy by increasing cancer cell sensitivity to the drugs used to treat them, which is known as “chemo-sensitization”. Possible Chemo-Sensitizers: -Curcumin -Resveratrol -EGCG -Quercetin -Genistein -Berberine -Piperine: alkaloid from black pepper -Ginsenosides: active components of ginseng -Silymarin -Allicin -Lycopene -Ellagic acid -Caffeic acid phenethyl ester -flavopiridol -oleandrin -Ursolic acid -butein -Betulinic acid |
| 2596- | Api, | LT, | Natural Nrf2 Inhibitors: A Review of Their Potential for Cancer Treatment |
| - | Review, | Var, | NA |
| 8375- | LT, | Luteolin, a flavone ingredient: Anticancer mechanisms, combined medication strategy, pharmacokinetics, clinical trials, and pharmaceutical researches |
| - | Review, | Var, | NA |
| 8376- | LT, | Cisplatin, | Luteolin sensitizes the anticancer effect of cisplatin via c-Jun NH2-terminal kinase-mediated p53 phosphorylation and stabilization |
| - | vitro+vivo, | Var, | NA |
| 8393- | LT, | Progress, pharmacokinetics and future perspectives of luteolin modulating signaling pathways to exert anticancer effects: A review |
| - | Review, | Var, | NA |
| 8406- | LT, | Cisplatin, | Luteolin sensitizes the anticancer effect of cisplatin via c-Jun NH2-terminal kinase–mediated p53 phosphorylation and stabilization |
| - | vitro+vivo, | Liver, | HepG2 | - | in-vitro, | Laryn, | HEp2 |
| 8395- | LT, | PacT, | Luteolin enhances drug chemosensitivity by downregulating the FAK/PI3K/AKT pathway in paclitaxel‑resistant esophageal squamous cell carcinoma |
| - | in-vitro, | ESCC, | NA |
| 8386- | LT, | Luteolin induces apoptosis in Philadelphia chromosome-positive acute lymphoblastic leukemia cell by regulating the PI3K/AKT signaling pathway |
| - | in-vitro, | ALL, | SUP-B15 |
| 8384- | LT, | Current situation and research progress of luteolin in the treatment of gastrointestinal malignant tumors |
| - | Review, | GC, | NA |
| 2589- | LT, | Chemo, | Luteolin Inhibits Breast Cancer Stemness and Enhances Chemosensitivity through the Nrf2-Mediated Pathway |
| - | in-vitro, | BC, | MDA-MB-231 |
| 2588- | LT, | Chemo, | Luteolin sensitizes two oxaliplatin-resistant colorectal cancer cell lines to chemotherapeutic drugs via inhibition of the Nrf2 pathway |
| - | in-vitro, | CRC, | HCT116 |
| 2587- | LT, | Luteolin inhibits Nrf2 leading to negative regulation of the Nrf2/ARE pathway and sensitization of human lung carcinoma A549 cells to therapeutic drugs |
| - | in-vitro, | Lung, | A549 |
| 1060- | LT, | BTZ, | Luteolin inhibits the TGF-β signaling pathway to overcome bortezomib resistance in multiple myeloma |
| - | vitro+vivo, | Melanoma, | NA |
| 2919- | LT, | Luteolin as a potential therapeutic candidate for lung cancer: Emerging preclinical evidence |
| - | Review, | Var, | NA |
| 2916- | LT, | Antioxidative and Anticancer Potential of Luteolin: A Comprehensive Approach Against Wide Range of Human Malignancies |
| - | Review, | Var, | NA | - | Review, | AD, | NA | - | Review, | Park, | NA |
| 2914- | LT, | Therapeutic Potential of Luteolin on Cancer |
| - | 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:% Cells:% prod#:118 Target#:1106 State#:% Dir#:%
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