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Quantitative microscopy of the Drosophila ovary shows multiple niche signals specify progenitor cell fate

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  • Wei Dai

    (University of California)

  • Amy Peterson

    (University of California)

  • Thomas Kenney

    (University of California)

  • Haley Burrous

    (University of California)

  • Denise J. Montell

    (University of California)

Abstract

Adult stem cells commonly give rise to transit-amplifying progenitors, whose progeny differentiate into distinct cell types. It is unclear if stem cell niche signals coordinate fate decisions within the progenitor pool. Here we use quantitative analysis of Wnt, Hh, and Notch signalling reporters and the cell fate markers Eyes Absent (Eya) and Castor (Cas) to study the effects of hyper-activation and loss of niche signals on progenitor development in the Drosophila ovary. Follicle stem cell (FSC) progeny adopt distinct polar, stalk, and main body cell fates. We show that Wnt signalling transiently inhibits expression of the main body cell fate determinant Eya, and Wnt hyperactivity strongly biases cells towards polar and stalk fates. Hh signalling independently controls the proliferation to differentiation transition. Notch is permissive but not instructive for differentiation of multiple cell types. These findings reveal that multiple niche signals coordinate cell fates and differentiation of progenitor cells.

Suggested Citation

  • Wei Dai & Amy Peterson & Thomas Kenney & Haley Burrous & Denise J. Montell, 2017. "Quantitative microscopy of the Drosophila ovary shows multiple niche signals specify progenitor cell fate," Nature Communications, Nature, vol. 8(1), pages 1-14, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01322-9
    DOI: 10.1038/s41467-017-01322-9
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