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RNA G-quadruplexes control mitochondria-localized mRNA translation and energy metabolism

Author

Listed:
  • Leïla Dumas

    (Université Toulouse III-Paul Sabatier)

  • Sauyeun Shin

    (Université Toulouse III-Paul Sabatier)

  • Quentin Rigaud

    (Université Toulouse III-Paul Sabatier)

  • Marie Cargnello

    (Université Toulouse III-Paul Sabatier)

  • Beatriz Hernández-Suárez

    (Université Toulouse III-Paul Sabatier)

  • Pauline Herviou

    (Université Toulouse III-Paul Sabatier)

  • Nathalie Saint-Laurent

    (Université Toulouse III-Paul Sabatier)

  • Marjorie Leduc

    (Proteom’IC facility, Université Paris Cité, CNRS, INSERM Institut Cochin)

  • Morgane Gall

    (Proteom’IC facility, Université Paris Cité, CNRS, INSERM Institut Cochin)

  • David Monchaud

    (Institut de Chimie Moléculaire (ICMUB), UBFC Dijon CNRS UMR6302)

  • Erik Dassi

    (University of Trento)

  • Anne Cammas

    (Université Toulouse III-Paul Sabatier)

  • Stefania Millevoi

    (Université Toulouse III-Paul Sabatier)

Abstract

Cancer cells rely on mitochondria for their bioenergetic supply and macromolecule synthesis. Central to mitochondrial function is the regulation of mitochondrial protein synthesis, which primarily depends on the cytoplasmic translation of nuclear-encoded mitochondrial mRNAs whose protein products are imported into mitochondria. Despite the growing evidence that mitochondrial protein synthesis contributes to the onset and progression of cancer, and can thus offer new opportunities for cancer therapy, knowledge of the underlying molecular mechanisms remains limited. Here, we show that RNA G-quadruplexes (RG4s) regulate mitochondrial function by modulating cytoplasmic mRNA translation of nuclear-encoded mitochondrial proteins. Our data support a model whereby the RG4 folding dynamics, under the control of oncogenic signaling and modulated by small molecule ligands or RG4-binding proteins, modifies mitochondria-localized cytoplasmic protein synthesis. Ultimately, this impairs mitochondrial functions, affecting energy metabolism and consequently cancer cell proliferation.

Suggested Citation

  • Leïla Dumas & Sauyeun Shin & Quentin Rigaud & Marie Cargnello & Beatriz Hernández-Suárez & Pauline Herviou & Nathalie Saint-Laurent & Marjorie Leduc & Morgane Gall & David Monchaud & Erik Dassi & Anne, 2025. "RNA G-quadruplexes control mitochondria-localized mRNA translation and energy metabolism," Nature Communications, Nature, vol. 16(1), pages 1-22, December.
  • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-58118-5
    DOI: 10.1038/s41467-025-58118-5
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