{
    "title": "Fisetin vs Aging",
    "inventor_name": "Paul D. Robbins",
    "publication_year": 2018,
    "device_name": "Fisetin",
    "goal": "Reduce senescent cell burden to extend healthspan and lifespan",
    "problem_addressed": "Cellular senescence and age-related functional decline",
    "concept_summary": "Fisetin, a plant flavonoid, acts as a senolytic compound that selectively induces apoptosis in senescent cells, thereby decreasing inflammatory signaling, restoring tissue homeostasis, and extending median and maximum lifespan in aged mice. The compound is also being explored for neuroprotective and anti-aging benefits in humans.",
    "detailed_description": "The technology comprises (1) identification of fisetin as a potent senolytic through in-vitro screening of flavonoids, (2) demonstration of its efficacy in aged wild-type and progeroid mice via intermittent oral dosing, showing reduced senescence markers, improved tissue pathology, and lifespan extension, and (3) extraction methods for large-scale production of high-purity fisetin from plant sources (e.g., Toxicodendron succedaneum, boxwood, smoke trees) using alkaline soaking, ethanol extraction, and crystallization steps. The senolytic mechanism is a \"hit-and-run\" induction of apoptosis in senescent fibroblasts, endothelial cells, and adipocytes, while sparing proliferating cells.",
    "principles": [
        "Senolytic activity",
        "Selective apoptosis of senescent cells",
        "Anti-inflammatory effect",
        "Antioxidant activity"
    ],
    "scientific_domains": [
        "Pharmacology",
        "Gerontology",
        "Cell Biology"
    ],
    "mechanisms_of_action": [
        "Induction of apoptosis in senescent cells via inhibition of pro-survival pathways",
        "Modulation of inflammatory cytokine release",
        "Antioxidant scavenging of reactive oxygen species"
    ],
    "materials": [
        "Fisetin (C15H10O6)",
        "Sodium hydroxide (NaOH)",
        "Ethanol (C2H5OH)",
        "Limewater (Ca(OH)2 solution)",
        "Macroporous resin",
        "n-Butyl alcohol",
        "Ethyl acetate",
        "Water"
    ],
    "energy_sources": [],
    "inputs": [
        "Fisetin (compound)",
        "Aged mice (biological model)",
        "Human adipose tissue explants"
    ],
    "outputs": [
        "Reduced senescent cell markers",
        "Improved tissue health",
        "Extended median and maximum lifespan",
        "Improved cognitive function in neurodegenerative models"
    ],
    "claimed_performance": "In aged wild-type mice, intermittent fisetin treatment restored tissue homeostasis, reduced age-related pathology, and extended median and maximum lifespan; senescent markers were reduced in multiple tissues.",
    "experimental_evidence": "Mouse studies (EBioMedicine 2018) demonstrated lifespan extension and senescent cell reduction; human adipose tissue explants showed cell-type specific senolytic activity; multiple peer-reviewed papers report cognitive and physiological benefits in SAMP8 mice.",
    "replication_status": "Results published in peer-reviewed journals (EBioMedicine 2018; J Gerontol A 2018) and supported by several patents on fisetin extraction; no independent large-scale clinical replication reported yet.",
    "keywords": [
        "Fisetin",
        "Senolytic",
        "Cellular senescence",
        "Aging",
        "Healthspan",
        "Lifespan",
        "Flavonoid",
        "Neuroprotection"
    ],
    "related_technologies": [
        "Senolytic drug development",
        "CyTOF mass cytometry for cell profiling",
        "Flavonoid extraction and purification"
    ],
    "controversy_level": "low",
    "confidence_score": 0.9,
    "practicability_score": 0.7,
    "fringe_score": 0.2,
    "evidence_strength": 0.8,
    "risk_score": 0.2,
    "trl_estimate": 5,
    "source_urls": [
        "https://www.sciencedaily.com/releases/2018/10/181002114024.htm",
        "https://linkinghub.elsevier.com/retrieve/pii/S2352396418303736",
        "https://www.ncbi.nlm.nih.gov/pubmed/28575152",
        "https://www.selfhacked.com/blog/15-science-based-health-benefits-fisetin-1-favorite/"
    ],
    "organizations": [
        "University of Minnesota",
        "Mayo Clinic"
    ],
    "applications": [
        "Anti-aging therapeutics",
        "Neurodegenerative disease treatment",
        "Senolytic drug development"
    ],
    "limitations": [
        "Optimal human dosing not yet established",
        "Long-term safety data limited",
        "Efficacy demonstrated primarily in animal models"
    ],
    "open_questions": [
        "What is the effective dose for humans?",
        "Can fisetin be combined safely with other senolytics?",
        "What are the long-term effects on organ systems?"
    ],
    "red_flags": [],
    "evidence_quotes": [
        "\"Treatment of aged mice with the natural product Fisetin ... has significant positive effects on health and lifespan.\"",
        "\"Acute or intermittent treatment of progeroid and old mice with fisetin reduced senescence markers in multiple tissues ... and extended median and maximum lifespan.\"",
        "\"Fisetin selectively induces apoptosis in senescent but not proliferating human umbilical vein endothelial cells.\"",
        "\"The natural product fisetin has senotherapeutic activity in mice and in human tissues.\"",
        "\"The extraction method can obtain fisetin of up to 19% purity and is suitable for massive industrial production.\""
    ],
    "category": "Longevity & Life Extension"
}