Send to

Choose Destination
Cell. 1999 Jul 23;98(2):207-16.

Engrailed and hedgehog make the range of Wingless asymmetric in Drosophila embryos.

Author information

Department of Genetics, Cambridge University, United Kingdom.


In many instances, remote signaling involves the transport of secreted molecules. Here, we examine the spread of Wingless within the embryonic epidermis of Drosophila. Using two assays for Wingless activity (specification of naked cuticle and repression of rhomboid transcription), we found that Wingless acts at a different range in the anterior and posterior directions. We show that this asymmetry follows in part from differential distribution of the Wingless protein. Transport or stability is reduced within engrailed-expressing cells, and farther posteriorward Wingless movement is blocked at the presumptive segment boundary and perhaps beyond. We demonstrate the role of hedgehog in the formation of this barrier.

[Indexed for MEDLINE]
Free full text

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center