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Daughters against dpp modulates dpp organizing activity in Drosophila wing development
K Tsuneizumi1, T Nakayama, Y Kamoshida
1Institute of Molecular and Cellular Biosciences, The University of Tokyo, Japan.
Nature
|October 23, 1997
Summary
Daughters against dpp (Dad) is a gene induced by Decapentaplegic (Dpp) signaling. Dad acts as a negative feedback regulator, inhibiting Dpp activity and conserving this developmental pathway in vertebrates.
Area of Science:
- Developmental Biology
- Molecular Biology
- Genetics
Background:
- Transforming growth factor-beta (TGF-β) signaling molecules are crucial for development.
- Drosophila Decapentaplegic (Dpp) acts as a morphogen, patterning both embryonic and adult structures.
- Understanding Dpp signaling regulation is key to deciphering developmental patterning.
Purpose of the Study:
- To identify novel genes involved in the Dpp signaling pathway.
- To characterize the function of the newly isolated gene, Daughters against dpp (Dad).
- To elucidate the regulatory mechanisms of Dpp-mediated patterning.
Main Methods:
- Gene isolation and characterization.
- Overexpression studies in Drosophila and Xenopus embryos.
- Analysis of protein homology and functional interactions.
Main Results:
- Isolated Daughters against dpp (Dad), a Dpp-induced gene.
- Dad antagonizes Dpp signaling, unlike Mothers against dpp (Mad).
- Dad's inhibitory function is conserved in vertebrate bone morphogenetic protein signaling.
Conclusions:
- Dpp signaling involves a negative-feedback loop where Dpp induces its antagonist, Dad.
- This feedback mechanism is essential for pattern organization.
- The Dpp-Dad feedback circuit is conserved across species, including vertebrates.
