{
    "title": "Flagellin vs Radiation",
    "inventor_name": "Andrei Gudkov",
    "publication_year": 2009,
    "device_name": "Flagellin-based anti-radiation medication",
    "goal": "Protect living organisms from lethal radiation exposure",
    "problem_addressed": "Radiation damage from nuclear accidents, dirty bombs, and high-dose radiotherapy",
    "concept_summary": "A drug composed of bacterial flagellin protein is administered to mammals to suppress radiation-induced apoptosis and promote cellular recovery, thereby increasing survival after otherwise lethal radiation doses.",
    "detailed_description": null,
    "category": "Medical & Dental Technologies",
    "principles": [
        "Protein-mediated suppression of apoptosis",
        "Activation of innate immune receptor TLR5",
        "Enhancement of DNA repair pathways"
    ],
    "scientific_domains": [
        "Immunology",
        "Radiobiology",
        "Molecular Biology"
    ],
    "mechanisms_of_action": [
        "Flagellin binds TLR5, modulating signaling that reduces radiation-induced cell suicide",
        "Induction of protective gene expression that aids DNA damage repair"
    ],
    "materials": [
        "Bacterial flagellin protein"
    ],
    "energy_sources": [],
    "inputs": [
        "Flagellin-containing composition administered as one or several doses"
    ],
    "outputs": [
        "Increased cellular survival after radiation exposure",
        "Reduced radiation-induced morbidity"
    ],
    "claimed_performance": "In a study of 650 monkeys exposed to Chernobyl-level radiation, 70% of untreated animals died while almost all of those receiving the flagellin drug survived with no side effects; a human safety test reported no adverse effects.",
    "experimental_evidence": "The article cites a test on 650 monkeys where the medication prevented death in the majority of subjects, and a separate test on humans not exposed to radiation showed no side effects.",
    "replication_status": null,
    "keywords": [
        "Flagellin",
        "Radiation protection",
        "Radioprotective drug",
        "TLR5",
        "Apoptosis suppression"
    ],
    "related_technologies": [
        "Radioprotective agents",
        "Toll-like receptor agonists",
        "Cytokine therapy"
    ],
    "controversy_level": "medium",
    "confidence_score": 0.85,
    "practicability_score": 0.6,
    "fringe_score": 0.2,
    "evidence_strength": 0.6,
    "risk_score": 0.2,
    "trl_estimate": 4,
    "source_urls": [
        "http://www.theaustralian.news.com.au/story/0%2C25197%2C25797329-15084%2C00.html",
        "http://en.wikipedia.org/wiki/Flagellin",
        "http://www.ncbi.nlm.nih.gov/pubmed/11489966",
        "WO2005056042"
    ],
    "organizations": [
        "Cleveland BioLabs",
        "Israeli collaborator Elena Feinstein"
    ],
    "applications": [
        "Emergency protection against nuclear or dirty-bomb radiation",
        "Adjunct to cancer radiotherapy to allow higher dose delivery"
    ],
    "limitations": [
        "No peer-reviewed clinical trial data",
        "Potential immune reactions to bacterial protein",
        "Manufacturing and formulation of pure flagellin"
    ],
    "open_questions": [
        "Long-term safety and immunogenicity in humans",
        "Effective dosing regimen for different radiation levels",
        "Scalability of production for mass-casualty scenarios"
    ],
    "red_flags": [
        "Claims based on a single animal study and unpublished human safety test",
        "Lack of independent replication or regulatory approval at time of reporting"
    ],
    "evidence_quotes": [
        "In tests involving 650 monkeys exposed to radiation equivalent to that recorded during the Chernobyl nuclear reactor disaster in 1986, 70 per cent died while the rest suffered serious maladies.",
        "Of the group given anti-radiation shots, almost all survived and had no side effects.",
        "A test on humans not exposed to radiation showed none suffered side effects from the medication.",
        "The medication works by suppressing the 'suicide mechanism' of cells hit by radiation, while enabling them to recover from the radiation-induced damages that prompted them to activate the suicide mechanism in the first place.",
        "The invention relates to a method of protecting a mammal against radiation comprising administering said mammal a composition containing flagellin."
    ]
}