{
  "id": 3125907,
  "title": "Lipoproteins modulate the uptake and biological functionof cationic cell-penetrating peptides across the animal lineage.",
  "url": "https://urgent.news/2026/08/24/lipoproteins-modulate-the-uptake-and-biological-functionof-cationic",
  "topic": "science",
  "section": "Science",
  "published": "2026-08-24T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.23.746575v1?rss=1"
  },
  "original_language": "en",
  "account": "Cationic cell-penetrating peptides (+CPPs) are present in all animals, playing roles in innate immune systems, venoms, and neurodegenerative diseases. The way these peptides enter cells has been a mystery, with many debates surrounding the subject. In a recent study, researchers explored the uptake of +CPPs across 600 million years of animal evolution, discovering that endocytosis is a common method used by different cell types and organisms, even at normal concentrations.\n\nTo uncover this process, the researchers employed various techniques, including multiplex imaging, genetic screening, cryo-electron tomography, and biophysical methods. They found that +CPPs are able to latch onto lipoproteins and ride along for entry into eukaryote cells. Furthermore, the study revealed that this interaction between +CPPs and lipoproteins can alter the peptides' antimicrobial function. By piecing together these findings, the scientists have established a universal molecular framework that explains how +CPPs penetrate cells across the entire animal kingdom.\n\nThis discovery has significant implications for human health, as hyperlipidemia often co-occurs with other conditions. The insights gained from this research could also help inform the future design of peptide-based therapeutics and delivery vehicles.",
  "summary": "Cationic cell-penetrating peptides (+CPPs) are pervasive killer peptides produced by all animals and found in innate immune systems, venoms and neurodegenerative diseases. Despite their ubiquity, the mechanisms underlying their uptake remain opaque and intensely debated. Here, we interrogate +CPPs spanning 600 million years of animal evolution and identify endocytosis as a conserved/convergent…",
  "key_points": [],
  "editors_take": null,
  "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."
}