{
  "id": 11333891,
  "title": "Drosophila glutathione S-transferase S1 exacerbates phenotypes of the gain-of-function voltage-gated sodium channel mutant paraShu through a hemocyte-mediated mechanism",
  "url": "https://urgent.news/2026/10/01/drosophila-glutathione-s-transferase-s1-exacerbates-phenotypes-of-the",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-01T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.09.26.754684v1?rss=1"
  },
  "original_language": "en",
  "account": "Researchers have found that a specific enzyme in fruit flies, Drosophila glutathione S-transferase S1 (GstS1), can worsen certain symptoms caused by a genetic mutation in a sodium channel gene called paraShu. This finding was revealed through a genetic screening process, which identified that a lack of GstS1 can counteract the hyperexcitability caused by the paraShu mutation.\n\nFurther investigation using a technique called GAL4/UAS and RNA interference (RNAi) showed that reducing GstS1 specifically in hemocytes, a type of immune cell, can help alleviate the hyperexcitable behaviors in both paraShu and another related mutant called eas2. This suggests that GstS1 plays a role in modulating neuronal excitability, possibly by influencing the development of neural circuits during the bug's adulthood.\n\nThe researchers also observed that these symptoms can be reversed by either reducing GstS1 or by adding a specific type of fat called linolenic acid to the fly's diet. This discovery indicates that GstS1 may be involved in a developmental process that connects genetic changes to altered nervous system development and hyperexcitability, possibly through lipid signaling pathways. These findings highlight the importance of understanding how genetic mutations can affect the interactions between the nervous system and the immune system.",
  "summary": "Drosophila glutathione S-transferase S1 (GstS1) is a unique member of the glutathione S-transferase family and is considered the ortholog of vertebrate hematopoietic prostaglandin D synthase based on amino acid sequence similarity. A previous forward genetic screen revealed that a null mutation in GstS1 dominantly suppresses genetically induced behavioral hyperexcitability in several…",
  "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."
}