{
  "id": 7320261,
  "title": "RNA 'delivery tags' guide key messages to distant neuron branches",
  "url": "https://urgent.news/2026/09/14/rna-delivery-tags-guide-key-messages-to-distant-neuron-branches",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-14T13:00:01.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-09-rna-delivery-tags-key-messages.html"
  },
  "original_language": "en",
  "account": "Neurons must deliver RNA to specific locations within their structure, but the process of targeting and transporting these molecules remains poorly understood. A team of researchers at KAIST discovered that a small chemical modification called m6A acts as a molecular \"delivery tag\" on RNA, guiding it to the distal regions of neurons. This modification, which alters a building block of RNA, influences several aspects of RNA metabolism and can affect RNA stability and translation. The researchers confirmed the importance of m6A in early neuron development by deleting a protein involved in adding the modification to RNA in mice. The absence of m6A led to impaired axon projection and neurite development. Using advanced techniques, the team mapped the locations of m6A modifications in RNA from developing mouse brains, finding that certain RNA molecules associated with axon development and synapse organization were marked by m6A. The researchers also identified how this \"delivery tag\" is recognized and connected to the cellular transport machinery. Specifically, they found that a protein called YTHDF2, which recognizes m6A-modified RNA, works with two other proteins, FMRP and KIF5C, to help transport RNA along neuronal processes. This discovery sheds new light on the study of brain disorders, suggesting that problems with RNA delivery may contribute to neurological dysfunction in addition to defects in RNA production and maintenance. The findings also highlight the role of m6A in brain aging and neurodegenerative disease, opening up possibilities for developing new therapeutic strategies that target RNA transport.",
  "summary": "Much like a courier reading an address on a package, neurons must deliver RNA to the precise locations where it is needed. A KAIST research team has discovered how a small chemical modification on RNA acts as a \"delivery tag,\" helping selected RNAs travel to distant regions of neurons.",
  "key_points": [
    "m6A modification acts as molecular delivery tag on RNA",
    "Deleting protein impairs axon projection and neurite development in mice",
    "YTHDF2 protein with FMRP and KIF5C transports m6A-modified RNA"
  ],
  "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."
}