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Drosophila ovarian stem cell niche ageing involves coordinated changes in transcription and alternative splicing

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Listed:
  • Dilamm Even-Ros

    (Carretera de Utrera km 1)

  • Judit Huertas-Romero

    (Carretera de Utrera km 1)

  • Miriam Marín-Menguiano

    (Carretera de Utrera km 1)

  • Gretel Nusspaumer

    (Carretera de Utrera km 1)

  • Miguel Borge

    (Barcelona Institute of Science and Technology (BIST)
    Universitat Pompeu Fabra (UPF))

  • Manuel Irimia

    (Barcelona Institute of Science and Technology (BIST)
    Universitat Pompeu Fabra (UPF)
    ICREA)

  • Federico Zurita

    (Centro de Investigación Biomédica)

  • Acaimo González-Reyes

    (Carretera de Utrera km 1)

Abstract

Gene expression (GE) and alternative splicing (AS) contribute to the formation of new interaction networks with potentially significant cellular functions. Here, we investigate ageing in the Drosophila female germline stem cell (GSC) niche and describe functional changes in both GE and AS. The GSC niche comprises three types of support cells, whose ageing transcriptomes reveal differential GE and AS variations related to cell adhesion, cytoskeleton and neural signalling. Because each population show distinctive GE and AS changes, niche cell types possess unique ageing signatures. Depending on the cell population, groups of genes display changes in both GE and AS, revealing a coordinated regulation of transcription and splicing during niche ageing. One such gene is Fasciclin 2, a neural adhesion molecule that we find is essential for niche functioning. Furthermore, genes involved in AS undergo changes in GE and/or AS themselves, providing a mechanistic explanation for the coordination of these two processes during niche ageing. This is the case of the splicing factor Smu1, described here as a key element necessary for ovarian niche homeostasis.

Suggested Citation

  • Dilamm Even-Ros & Judit Huertas-Romero & Miriam Marín-Menguiano & Gretel Nusspaumer & Miguel Borge & Manuel Irimia & Federico Zurita & Acaimo González-Reyes, 2025. "Drosophila ovarian stem cell niche ageing involves coordinated changes in transcription and alternative splicing," Nature Communications, Nature, vol. 16(1), pages 1-17, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-57901-8
    DOI: 10.1038/s41467-025-57901-8
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