How Dlk1 Affects Notch Signaling in Drosophila
Author Information
Author(s): Bray Sarah J, Takada Shuji, Harrison Emma, Shen Shing-Chuan, Ferguson-Smith Anne C
Primary Institution: Department of Physiology, Development, and Neuroscience, University of Cambridge
Hypothesis
Can the atypical mammalian ligand Dlk1 regulate Notch signaling in Drosophila?
Conclusion
DLK1 can regulate the Notch receptor despite its atypical structure.
Supporting Evidence
- DLK1 can regulate Notch leading to altered cellular distribution of Notch itself.
- Cells expressing an alternative Dlk1 isoform exhibit alterations in cell size.
- Phenotypes from expressing Dlk1 in the Drosophila wing indicate reduced Notch activity.
Takeaway
Dlk1 is a protein that can change how Notch works in fruit flies, even though it looks different from other proteins that usually interact with Notch.
Methodology
Transgenic flies expressing different Dlk1 isoforms were generated and assessed for phenotypes indicative of Notch activity.
Limitations
The study primarily focuses on Drosophila, which may not fully represent mammalian systems.
Digital Object Identifier (DOI)
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