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Drosophila limb development is organized by interactions between anterior and posterior compartment cells. Posterior cells continuously express and require engrailed (en) and secrete Hedgehog (Hh) protein. Anterior cells express the zinc-finger protein Cubitus interruptus (Ci). It is now shown that anterior cells lacking ci express hh and adopt posterior properties without expressing en. Increased levels of Ci can induce the expression of the Hh target gene decapentaplegic (dpp) in a Hh-independent manner. Thus, expression of Ci in anterior cells controls limb development (i) by restricting hh secretion to posterior cells and (ii) by conferring competence to respond to Hh by mediating the transduction of this signal.
|Item Type:||Journal Article, refereed|
|Communities & Collections:||07 Faculty of Science > Institute of Zoology (former)|
07 Faculty of Science > Institute of Molecular Life Sciences
|DDC:||570 Life sciences; biology|
590 Animals (Zoology)
|Date:||14 June 1996|
|Deposited On:||11 Feb 2008 13:20|
|Last Modified:||23 Nov 2012 16:53|
|Publisher:||American Association for the Advancement of Science (AAAS)|
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