condition found
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Apigenin present in parsley, celery, chamomile, oranges and beverages such as tea, beer and wine. "It exhibits cell growth arrest and apoptosis in different types of tumors such as breast, lung, liver, skin, blood, colon, prostate, pancreatic, cervical, oral, and stomach, by modulating several signaling pathways." -Note half-life reports vary 2.5-90hrs?. -low solubility of apigenin in water : BioAv (improves when mixed with oil/dietary fat or lipid based formulations) -best oil might be MCT oils (medium-chain fatty acids) Pathways: - Often considered an antioxidant, in cancer cells it can paradoxically induce ROS production (one report that goes against most others, by lowering ROS in cancer cells but still effective) - ROS↑ related: MMP↓(ΔΨm), ER Stress↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, UPR↑, cl-PARP↑, HSP↓ - Lowers AntiOxidant defense in Cancer Cells: NRF2↓, GSH↓ (Conflicting evidence about Nrf2) - Combined with Metformin (reduces Nrf2) amplifies ROS production in cancer cells while sparing normal cells. - Raises AntiOxidant defense in Normal Cells: NRF2↑, SOD↑, GSH↑, Catalase↑, - lowers Inflammation : NF-kB↓, COX2↓, p38↓, Pro-Inflammatory Cytokines : IL-1β↓, TNF-α↓, IL-6↓, IL-8↓ - inhibit Growth/Metastases : , MMPs↓, MMP2↓, MMP9↓, IGF-1↓, uPA↓, VEGF↓, 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↓, TumCI↓, FAK↓, ERK↓, - inhibits glycolysis and ATP depletion : HIF-1α↓, PKM2↓, cMyc↓, PDK1↓, GLUT1↓, LDHA↓, HK2↓, Glucose↓, GlucoseCon↓ - inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, PDGF↓, EGFR↓, Integrins↓, - inhibits Cancer Stem Cells : CSC↓, CK2↓, Hh↓, GLi↓, GLi1↓, - Others: PI3K↓, AKT↓, JAK↓, 1, 2, 3, STAT↓, 1, 2, 3, 4, 5, 6, Wnt↓, β-catenin↓, AMPK↓,, α↓,, ERK↓, 5↓, JNK↓, - Shown to modulate the nuclear translocation of SREBP-2 (related to cholesterol). - Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, RadioProtective, Others(review target notes) -Ex: other flavonoids(chrysin, Luteolin, querectin) curcumin, metformin, sulforaphane, ASA Neuroprotective, Renoprotection, Hepatoprotective, CardioProtective, - Selectivity: Cancer Cells vs Normal Cells Apigenin exhibits biological effects (anticancer, anti-inflammatory, antioxidant, neuroprotective, etc.) typically at concentrations roughly in the range of 1–50 µM. Parsley microgreens can contain up to 2-3 times more apigenin than mature parsley. Apigenin is typically measured in the range of 1-10 μM for biological activity. Assuming a molecular weight of 270 g/mol for apigenin, we can estimate the following μM concentrations: 10uM*5L(blood)*270g/mol=13.5mg apigenin (assumes 100% bioavailability) then an estimated 10-20 mg of apigenin per 100 g of fresh weight parlsey 2.2mg/g of apigenin fresh parsley 45mg/g of apigenin in dried parsley (wikipedia) so 100g of parsley might acheive 10uM blood serum level (100% bioavailability) BUT bioavailability is only 1-5% (Supplements available in 75mg liposomal)( Apigenin Pro Liposomal, 200 mg from mcsformulas.com) A study had 2g/kg bw (meaning 160g for 80kg person) delivered a maximum 0.13uM of plasma concentration @ 7.2hrs. Assuming parsley is 90-95% water, then that would be ~16g of dried parsley Conclusion: to reach 10uM would seem very difficult by oral ingestion of parsley. Other quotes: “4g of dried parsley will be enough for 50kg adult” 5mg/kg BW yields 16uM, so 80Kg person means 400mg (if dried parsley is 130mg/g, then would need 3g/d) In many cancer cell lines, concentrations in the range of approximately 20–40 µM have been reported to shift apigenin’s activity from mild antioxidant effects (or negligible ROS changes) toward a clear pro-oxidant effect with measurable ROS increases. Low doses: At lower concentrations, apigenin is more likely to exhibit its antioxidant properties, scavenging ROS and protecting cells from oxidative stress. In normal cells with robust antioxidant systems, apigenin’s antioxidant effects might prevail, whereas cancer cells—often characterized by an already high level of basal ROS—can be pushed over the oxidative threshold by increased ROS production induced by apigenin. In environments with lower free copper levels, this pro-oxidant activity is less pronounced, and apigenin may tilt the balance toward its antioxidant function. |
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Hypoxia-Inducible-Factor 1A (HIF1A gene, HIF1α, HIF-1α protein product) -Dominantly expressed under hypoxia(low oxygen levels) in solid tumor cells -HIF1A induces the expression of vascular endothelial growth factor (VEGF) -High HIF-1α expression is associated with Poor prognosis -Low HIF-1α expression is associated with Better prognosis -Functionally, HIF-1α is reported to regulate glycolysis, whilst HIF-2α regulates genes associated with lipoprotein metabolism. -Cancer cells produce HIF in response to hypoxia in order to generate more VEGF that promote angiogenesis Key mediators of aerobic glycolysis regulated by HIF-1α. -GLUT-1 → regulation of the flux of glucose into cells. -HK2 → catalysis of the first step of glucose metabolism. -PKM2 → regulation of rate-limiting step of glycolysis. -Phosphorylation of PDH complex by PDK → blockage of OXPHOS and promotion of aerobic glycolysis. -LDH (LDHA): Rapid ATP production, conversion of pyruvate to lactate; HIF-1α Inhibitors: -Curcumin: disruption of signaling pathways that stabilize HIF-1α (ie downregulate). -Resveratrol: downregulate HIF-1α protein accumulation under hypoxic conditions. -EGCG: modulation of upstream signaling pathways, leading to decreased HIF-1α activity. -Emodin: reduce HIF-1α expression. (under hypoxia). -Apigenin: inhibit HIF-1α accumulation. |
1548- | Api,  |   | A comprehensive view on the apigenin impact on colorectal cancer: Focusing on cellular and molecular mechanisms |
- | Review, | Colon, | NA |
1553- | Api,  |   | Role of Apigenin in Cancer Prevention via the Induction of Apoptosis and Autophagy |
- | Review, | NA, | NA |
1547- | Api,  |   | Apigenin: Molecular Mechanisms and Therapeutic Potential against Cancer Spreading |
- | Review, | NA, | NA |
1545- | Api,  |   | The Potential Role of Apigenin in Cancer Prevention and Treatment |
- | Review, | NA, | NA |
1537- | Api,  |   | Apigenin as Tumor Suppressor in Cancers: Biotherapeutic Activity, Nanodelivery, and Mechanisms With Emphasis on Pancreatic Cancer |
- | Review, | PC, | NA |
2640- | Api,  |   | Apigenin: A Promising Molecule for Cancer Prevention |
- | Review, | Var, | NA |
2639- | Api,  |   | Plant flavone apigenin: An emerging anticancer agent |
- | Review, | Var, | NA |
2631- | Api,  |   | Apigenin Induces Autophagy and Cell Death by Targeting EZH2 under Hypoxia Conditions in Gastric Cancer Cells |
- | in-vivo, | GC, | NA | - | in-vitro, | GC, | AGS |
2319- | Api,  |   | Apigenin sensitizes radiotherapy of mouse subcutaneous glioma through attenuations of cell stemness and DNA damage repair by inhibiting NF-κB/HIF-1α-mediated glycolysis |
- | in-vitro, | GBM, | NA |
2318- | Api,  |   | Apigenin as a multifaceted antifibrotic agent: Therapeutic potential across organ systems |
- | Review, | Nor, | NA |
2317- | Api,  |   | Apigenin intervenes in liver fibrosis by regulating PKM2-HIF-1α mediated oxidative stress |
- | in-vivo, | Nor, | NA |
2299- | Api,  |   | Flavonoids Targeting HIF-1: Implications on Cancer Metabolism |
- | Review, | Var, | NA |
- | in-vitro, | BC, | BT474 |
958- | Api,  |   | Apigenin suppresses tumor angiogenesis and growth via inhibiting HIF-1α expression in non-small cell lung carcinoma |
- | in-vitro, | Lung, | NCIH1299 |
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