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| Fisetin is a plant based flavonoid. Found in strawberries(160ug/g), apples, persimmons, onions, cucumbers, grapes. -Note half-life 3-4hrs - Oral BioAv low (40-50%) Pathways: - induce ROS production in cancer cells, but also known to reduce it. Also a claim Fisetin-Induced Reactive Oxygen Species Production Has No Effect on Apoptosis in RCC cells Also one claim (NAC 10-20mM levels) that NAC enhances ROS/apoptosis - ROS↑ related: MMP↓(ΔΨm), ER Stress↑, UPR↑, GRP78↑, Ca+2↑, Cyt‑c↑, Caspases↑, DNA damage↑, cl-PARP↑, HSP↓ - Does not appear to lower antioxidants in cancer cells - 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↓, MMPs↓, MMP2↓, MMP9↓, IGF-1↓, uPA↓, VEGF↓, FAK↓, RhoA↓, NF-κB↓, TGF-β↓, ERK↓ - cause Cell cycle arrest : TumCCA↑, cyclin D1↓, cyclin E↓, CDK2↓, CDK4↓, CDK6↓, - inhibits Migration/Invasion : TumCMig↓, TumCI↓, FAK↓, ERK↓, EMT↓, TOP1↓, TET1↓, - inhibits HIF-1α↓, cMyc↓, LDH↓, GRP78↑, - inhibits angiogenesis↓ : VEGF↓, HIF-1α↓, EGFR↓, - inhibits Cancer Stem Cells : CD133↓, β-catenin↓, - Others: PI3K↓, AKT↓, JAK↓, STAT↓, Wnt↓, β-catenin↓, AMPK↓, ERK↓, JNK, - Synergies: chemo-sensitization, chemoProtective, RadioSensitizer, Others(review target notes), Neuroprotective, Cognitive, Renoprotection, Hepatoprotective, CardioProtective, - Selectivity: Cancer Cells vs Normal Cells Fisetin — a naturally occurring plant flavonol and polyphenolic bioactive compound, chemically identified as 3,3′,4′,7-tetrahydroxyflavone. It is classified as a dietary flavonoid, experimental senotherapeutic and preclinical anticancer agent; Fisetin occurs in strawberries, apples, persimmons, grapes, onions and cucumbers, with strawberries providing one of the higher concentrations among commonly consumed foods. Its reported anticancer, neuroprotective and senolytic actions remain predominantly preclinical, and it is not an approved cancer or Alzheimer’s disease therapy. Primary mechanisms (ranked):
Bioavailability / PK relevance: Native fisetin has very low aqueous solubility, rapid intestinal and hepatic conjugation, and limited systemic exposure to unconjugated fisetin after conventional oral administration. Glucuronide, sulfate and methylated metabolites can predominate in circulation. Human PK evidence remains limited, although formulated preparations can produce substantially greater exposure than unformulated fisetin. Liposomal, nanoemulsion, phospholipid, cyclodextrin and other delivery systems are therefore mechanistically relevant but cannot be assumed equivalent to ordinary supplements. In-vitro vs systemic exposure relevance: Many anticancer experiments use approximately 10–100 µM fisetin, commonly 20–80 µM. These concentrations are substantially above the free-parent concentrations expected after ordinary dietary intake and may exceed those produced by conventional oral supplements. Direct translation of cytotoxic concentrations is therefore poor unless tumor accumulation, active metabolites or an exposure-enhancing formulation is demonstrated. Clinical evidence status: Cancer evidence is predominantly cell-culture and animal evidence. Early human studies are evaluating fisetin as a senolytic or supportive intervention in aging, frailty and cancer-survivor populations, but there is no completed randomized evidence establishing antitumor efficacy. Fisetin should be categorized as preclinical for direct cancer treatment and investigational for adjunct or senotherapeutic use. Safety / interaction constraints: Food-level exposure is generally regarded as low risk, and small short-term human studies have not identified a clear severe toxicity signal. However, high intermittent senolytic dosing and long-term supplemental dosing remain insufficiently characterized. Mechanistic concerns include antiplatelet or anticoagulant additivity, modulation of drug-metabolizing enzymes and transporters, topoisomerase inhibition, and context-dependent interference with oxidative or cytotoxic cancer treatments. Product purity and formulation-dependent exposure are additional uncertainties. Fisetin Mechanistic Ranking
P: 0–30 min R: 30 min–3 hr G: >3 hr Alzheimer’s disease relevance: Fisetin has significant but predominantly preclinical relevance to Alzheimer’s disease and related neurodegenerative disorders. Experimental studies report preservation of synaptic function and cognition, suppression of microglial inflammatory signaling, reduction of oxidative stress, promotion of autophagic clearance of phosphorylated tau, and modulation of amyloid-associated toxicity. Senescent-cell clearance provides an additional emerging rationale, but the relative contribution of senolysis versus direct neuroprotective signaling is unresolved. A pilot clinical study in mild cognitive impairment or mild Alzheimer’s disease is registered, but no completed trial currently establishes cognitive efficacy. Exposure constraint: Most neurological evidence comes from cell and animal models. Native fisetin’s poor solubility, rapid conjugation and uncertain free-brain exposure materially limit direct translation. CMS121 and other fisetin-derived compounds are being developed partly to improve potency, metabolic stability and neuroprotective exposure. Fisetin in Alzheimer’s Disease
P: 0–30 min R: 30 min–3 hr G: >3 hr |
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| (Also known as Hsp32 and HMOX1) HO-1 is the common abbreviation for the protein (heme oxygenase‑1) produced by the HMOX1 gene. HO-1 is an enzyme that plays a crucial role in various cellular processes, including the breakdown of heme, a toxic molecule. Research has shown that HO-1 is involved in the development and progression of cancer. -widely regarded as having antioxidant and cytoprotective effects -The overall activity of HO‑1 helps to reduce the pro‐oxidant load (by degrading free heme, a pro‑oxidant) and to generate molecules (like bilirubin) that can protect cells from oxidative damage Studies have found that HO-1 is overexpressed in various types of cancer, including lung, breast, colon, and prostate cancer. The overexpression of HO-1 in cancer cells can contribute to their survival and proliferation by: Reducing oxidative stress and inflammation Promoting angiogenesis (the formation of new blood vessels) Inhibiting apoptosis (programmed cell death) Enhancing cell migration and invasion When HO-1 is at a normal level, it mainly exerts an antioxidant effect, and when it is excessively elevated, it causes an accumulation of iron ions. A proper cellular level of HMOX1 plays an antioxidative function to protect cells from ROS toxicity. However, its overexpression has pro-oxidant effects to induce ferroptosis of cells, which is dependent on intracellular iron accumulation and increased ROS content upon excessive activation of HMOX1. -Curcumin Activates the Nrf2 pathway leading to HO‑1 induction; known for its anti‑inflammatory and antioxidant effects. -Resveratrol Induces HO‑1 via activation of SIRT1/Nrf2 signaling; exhibits antioxidant and cardioprotective properties. -Quercetin Activates Nrf2 and related antioxidant pathways; contributes to anti‑oxidative and anti‑inflammatory responses. -EGCG Promotes HO‑1 expression through activation of the Nrf2/ARE pathway; also exhibits anti‑inflammatory and anticancer properties. -Sulforaphane One of the most potent natural HO‑1 inducers; triggers Nrf2 nuclear translocation and upregulates a battery of phase II detoxifying enzymes. -Luteolin Induces HO‑1 via Nrf2 activation; may also exert anti‑inflammatory and neuroprotective effects in various cell models. -Apigenin Has been reported to induce HO‑1 expression partly via the MAPK and Nrf2 pathways; also known for anti‑inflammatory and anticancer activities. |
| 6897- | FIS, | Fisetin: A Dietary Antioxidant for Health Promotion |
| - | Review, | Nor, | NA |
| 2861- | FIS, | The neuroprotective effects of fisetin, a natural flavonoid in neurodegenerative diseases: Focus on the role of oxidative stress |
| - | Review, | Nor, | NA | - | Review, | Stroke, | NA | - | Review, | Park, | NA |
| 6922- | FIS, | Inhibition of Akt/mTOR signaling by the dietary flavonoid fisetin |
| - | Review, | Var, | NA |
| 2830- | FIS, | Biological effects and mechanisms of fisetin in cancer: a promising anti-cancer agent |
| - | Review, | Var, | NA |
| 2858- | FIS, | Fisetin inhibits cell migration via inducing HO-1 and reducing MMPs expression in breast cancer cell lines |
| - | in-vitro, | BC, | 4T1 |
| 2829- | FIS, | Fisetin: An anticancer perspective |
| - | Review, | Var, | NA |
| 2825- | FIS, | Exploring the molecular targets of dietary flavonoid fisetin in cancer |
| - | Review, | Var, | NA |
| 2845- | FIS, | Fisetin: A bioactive phytochemical with potential for cancer prevention and pharmacotherapy |
| - | 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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