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    "story_id": "mp-2026-07-28-008",
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    "headline": "A Cancer Vaccine Borrowed an Old Alarm",
    "slug": "a-cancer-vaccine-borrowed-an-old-alarm",
    "dek": "A dendritic-cell platform used existing SARS-CoV-2 helper T-cell memory to strengthen antitumor responses in preclinical models.",
    "summary": "A dendritic-cell platform used existing SARS-CoV-2 helper T-cell memory to strengthen antitumor responses in preclinical models.",
    "body_text": "The PROTEXI platform pairs tumor antigens with helper signals derived from SARS-CoV-2 spike epitopes so immune systems primed by infection or vaccination can reinforce tumor-specific killer T cells. In mouse and humanized-mouse models of melanoma and breast cancer, the Nature Communications study reported slower tumor growth, better survival and stronger immune memory, including alongside other immunotherapies. A first-in-human sarcoma study is planned, but the current evidence is preclinical and does not show efficacy in patients; the glassware image is generic.",
    "why_it_matters": "A dendritic-cell platform used existing SARS-CoV-2 helper T-cell memory to strengthen antitumor responses in preclinical models.",
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      "A first-in-human sarcoma study is planned, but the current evidence is preclinical and does not show efficacy in patients; the glassware image is generic."
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    "first_published_at": "2026-07-28T09:00:00.000-04:00",
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    "tags": [
      "cancer vaccine",
      "immune memory",
      "SARS-CoV-2",
      "preclinical"
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    {
      "source_id": "source-2026-07-28-008",
      "title": "Nature Communications: PROTEXI antiviral-memory cancer vaccine",
      "publisher": "Nature Communications",
      "url": "https://doi.org/10.1038/s41467-026-74891-3",
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      "published_at": null,
      "accessed_at": "2026-07-28T08:31:00.000-04:00",
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  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
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  "cite_this_report": {
    "title": "A Cancer Vaccine Borrowed an Old Alarm",
    "publisher": "The Machine Press",
    "published_at": "2026-07-28T09:00:00.000-04:00",
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