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An RNA transmethylation pathway governs kidney nephrogenic potential

Author

Listed:
  • Harini Ramalingam

    (UT Southwestern Medical Center)

  • Jesus Alvarez

    (UT Southwestern Medical Center)

  • Andrea Flaten

    (UT Southwestern Medical Center)

  • Patricia Cobo-Stark

    (UT Southwestern Medical Center)

  • Nicholas Foster

    (UT Southwestern Medical Center)

  • Elyse Grilli

    (UT Southwestern Medical Center)

  • Ronak Lakhia

    (UT Southwestern Medical Center)

  • Karam Aboudehen

    (Stony Brook University)

  • Thomas Carroll

    (UT Southwestern Medical Center)

  • Vishal Patel

    (UT Southwestern Medical Center)

Abstract

The adult kidney lacks the ability to generate new nephrons, placing individuals born with low nephron counts at greater risk for chronic kidney disease as they age. Limited nutrient availability hinders nephron formation; however, the key metabolic dependencies remain unclear. Here we show that S-adenosylmethionine (SAM) and cellular transmethylation status are crucial determinants of the kidney’s nephrogenic capacity. The RNA methyltransferase METTL3 serves as a SAM sensor and is essential for the fate determination of nephron progenitor cells (NPCs). Reducing transmethylation or inhibiting METTL3 blocks NPC differentiation and nephrogenesis, whereas enhancing transmethylation or increasing METTL3 activity facilitates an induced NPC population and increases nephron production. Additionally, we identify Lrpprc mRNA, encoding a mitochondrially enriched protein, as a key direct target of METTL3-mediated transmethylation. Accordingly, inhibiting LRPPRC negates the nephrogenic effects of SAM and METTL3. Our findings reveal a modifiable methionine-SAM-RNA transmethylation pathway that can be targeted to enhance nephron formation.

Suggested Citation

  • Harini Ramalingam & Jesus Alvarez & Andrea Flaten & Patricia Cobo-Stark & Nicholas Foster & Elyse Grilli & Ronak Lakhia & Karam Aboudehen & Thomas Carroll & Vishal Patel, 2025. "An RNA transmethylation pathway governs kidney nephrogenic potential," Nature Communications, Nature, vol. 16(1), pages 1-16, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-60097-6
    DOI: 10.1038/s41467-025-60097-6
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