{
  "id": 236187,
  "title": "Mitochondria act as sensors for essential iron molecule, study reveals",
  "url": "https://urgent.news/2026/08/06/mitochondria-act-as-sensors-for-essential-iron-molecule-study-reveals",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-06T20:20:01.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-08-mitochondria-sensors-essential-iron-molecule.html"
  },
  "original_language": "en",
  "account": "Heme, a bioactive form of iron, is crucial for numerous functions in cells, including oxygen transport. However, it can be toxic when present in high concentrations. Cells must carefully regulate heme levels. A team of researchers led by Professor Lucas Jae from LMU's Gene Center Munich has discovered that mitochondria play a crucial role in monitoring heme levels. Mitochondria, which have been around for over 700 million years, detect heme deficiency by releasing a protein called DELE1 into the cytosol. This triggers a process that reduces protein production, preventing toxic excess of heme-binding proteins. This heme-sensing pathway operates across human tissues and is evolutionarily conserved. The system is particularly important in red blood cell development, where it prevents excessive production of globin, a protein counterpart of heme. The researchers believe this discovery could lead to new treatments for globin disorders and advancements in heme biology research, particularly in the context of malaria.",
  "summary": "Heme, a bioactive form of iron, has numerous essential functions in the cell. As a key component of hemoglobin, it enables oxygen transport in the blood. In addition, it performs important functions in other proteins in processes ranging from energy conversion to signal transduction.",
  "key_points": [
    "Mitochondria detect heme deficiency by releasing DELE1 protein",
    "DELE1 triggers process to reduce protein production",
    "Discovery could lead to new treatments for globin disorders"
  ],
  "editors_take": "The discovery that mitochondria sense heme levels and trigger a response to prevent toxicity sheds light on a crucial cellular regulatory mechanism with implications for treating globin disorders and advancing heme biology research.",
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}