{
  "id": 3806677,
  "title": "RBP4-BACH1 Interaction Modulates Transcriptional Regulation of Insulin Signaling Pathway Genes",
  "url": "https://urgent.news/2026/08/27/rbp4-bach1-interaction-modulates-transcriptional-regulation-of",
  "topic": "health",
  "section": "Health & Medicine",
  "published": "2026-08-27T00:00:00.000Z",
  "source": {
    "name": "bioRxiv",
    "slug": "biorxiv",
    "url": "https://www.biorxiv.org/content/10.64898/2026.08.24.746665v1?rss=1"
  },
  "original_language": "en",
  "account": "Retinol-binding protein 4 (RBP4) follows a diurnal oscillatory pattern and is higher in cases of circadian disruption and type 2 diabetes mellitus, but the connection between RBP4 and glucose metabolism issues is unclear. To explore this, the researchers overexpressed RBP4 in human hepatoma Huh7 cells and conducted integrated RNA sequencing, Co-immunoprecipitation followed by mass spectrometry, and CUT&Tag analyses. They discovered BACH1 as a direct RBP4-interacting transcription factor that mainly binds the TGACTCA motif in promoter regions of genes related to carbon metabolism. By examining the RNA-seq and CUT&Tag data together, they found 63 genes that are directly regulated by RBP4 and BACH1, including well-known circadian and metabolic regulators such as SLC7A11, PFKFB3, CTCF, NR1D2, and WEE1, along with new candidates like SF1 and PIN1. These target genes are heavily involved in insulin receptor signaling and carbohydrate metabolic pathways. Mechanistically, the RBP4-BACH1 axis alters glucose metabolism, connecting circadian rhythm disturbances to impaired glucose homeostasis. In summary, the research demonstrates that RBP4 plays a functional role in linking circadian disruption to diabetes, identifying RBP4 as a potential therapeutic target.",
  "summary": "Retinol-binding protein 4 (RBP4) exhibits diurnal oscillatory pattern and is elevated under conditions of circadian disruption and in type 2 diabetes mellitus, yet the molecular link between RBP4 and impaired glucose metabolism remains elusive. Here, we overexpressed RBP4 in human hepatoma Huh7 cells and performed integrated RNA sequencing (RNA-seq), Co-immunoprecipitation (Co-IP) coupled with…",
  "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."
}