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    "story_id": "mp-2026-07-30-003",
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    "headline": "The Developing Kidney Listened to Its Neighbors",
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    "dek": "Human tissue mapping identified soluble signals between developing cells and singled out IGF2 as support for stem-like kidney cells.",
    "summary": "Human tissue mapping identified soluble signals between developing cells and singled out IGF2 as support for stem-like kidney cells.",
    "body_text": "Penn Medicine, Children's Hospital of Philadelphia and Penn Engineering researchers mapped signaling directly in developing human kidney tissue rather than inferring the process only from animals. They identified insulin-like growth factor 2 as a key signal that sustains nephron progenitor cells; the Nature Genetics work is a developmental map, not a ready regenerative treatment.",
    "why_it_matters": "Human tissue mapping identified soluble signals between developing cells and singled out IGF2 as support for stem-like kidney cells.",
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      "Penn Medicine, Children's Hospital of Philadelphia and Penn Engineering researchers mapped signaling directly in developing human kidney tissue rather than inferring the process only from animals.",
      "They identified insulin-like growth factor 2 as a key signal that sustains nephron progenitor cells; the Nature Genetics work is a developmental map, not a ready regenerative treatment."
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        "qualification": "Penn Medicine, Children's Hospital of Philadelphia and Penn Engineering researchers mapped signaling directly in developing human kidney tissue rather than inferring the process only from animals."
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    "tags": [
      "kidney development",
      "IGF2",
      "human tissue",
      "nephron progenitors"
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      "source_id": "source-2026-07-30-003",
      "title": "Penn Medicine via Newswise: Signals that tell a human kidney how to grow",
      "publisher": "Penn Medicine",
      "url": "https://www.newswise.com/articles/researchers-uncover-the-signals-that-tell-a-human-kidney-how-to-grow",
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      "accessed_at": "2026-07-30T08:30:57.270-04:00",
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  "cite_this_report": {
    "title": "The Developing Kidney Listened to Its Neighbors",
    "publisher": "The Machine Press",
    "published_at": "2026-07-30T09:00:00.000-04:00",
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