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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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| Source: TCGA |
| Type: Proapototic |
| TP53 is the most commonly mutated gene in human cancer. TP53 is a gene that encodes for the p53 tumor suppressor protein ; TP73 (Chr.1p36.33) and TP63 (Chr.3q28) genes that encode transcription factors p73 and p63, respectively, are TP53 homologous structures. p53 is a crucial tumor suppressor protein that plays a significant role in regulating the cell cycle, maintaining genomic stability, and preventing tumor formation. It is often referred to as the "guardian of the genome" due to its role in protecting cells from DNA damage and stress. TP53 gene, which encodes the p53 protein, is one of the most frequently mutated genes in human cancers. Overexpression of MDM2, an inhibitor of p53, can lead to decreased p53 activity even in the presence of wild-type p53. In some cancers, particularly those with mutant p53, there may be an overexpression of the p53 protein. Cancers with overexpression: Breast, lung, colorectal, overian, head and neck, Esophageal, bladder, pancreatic, and liver. |
| 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 |
| 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 |
| 8391- | LT, | Mechanism of luteolin against non-small-cell lung cancer: a study based on network pharmacology, molecular docking, molecular dynamics simulation, and in vitro experiments |
| - | in-vitro, | NSCLC, | NA |
| 8384- | LT, | Current situation and research progress of luteolin in the treatment of gastrointestinal malignant tumors |
| - | Review, | GC, | NA |
| 2906- | LT, | Luteolin, a flavonoid with potentials for cancer prevention and therapy |
| - | 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 |
| 2915- | LT, | Luteolin promotes apoptotic cell death via upregulation of Nrf2 expression by DNA demethylase and the interaction of Nrf2 with p53 in human colon cancer cells |
| - | in-vitro, | Colon, | HT29 | - | in-vitro, | CRC, | SNU-407 | - | in-vitro, | Nor, | FHC |
| 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
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