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  "path": "/news/2026-02-paradigm-shift-immune-checkpoint-biology.html",
  "publishedAt": "2026-02-26T12:50:01.000Z",
  "site": "https://medicalxpress.com",
  "tags": [
    "Oncology & Cancer"
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  "textContent": "A research team led by Professor Ki-Young Lee at the College of Medicine, Sungkyunkwan University, has uncovered a previously unrecognized tumor-intrinsic role of the immune checkpoint molecule PD-L1, providing new mechanistic insight into lung cancer progression.",
  "title": "Paradigm shift in immune checkpoint biology"
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