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.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Dai W,Peterson A,Kenney T,Burrous H,Montell DJdoi
10.1038/s41467-017-01322-9subject
Has Abstractpub_date
2017-11-01 00:00:00pages
1244issue
1issn
2041-1723pii
10.1038/s41467-017-01322-9journal_volume
8pub_type
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