Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-16600
Schwank, G; Restrepo, S; Basler, K (2008). Growth regulation by Dpp: an essential role for Brinker and a non-essential role for graded signaling levels. Development, 135(24):4003-4013.
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Morphogens can control organ development by regulating patterning as well as growth. Here we use the model system of the Drosophila wing imaginal disc to address how the patterning signal Decapentaplegic (Dpp) regulates cell proliferation. Contrary to previous models, which implicated the slope of the Dpp gradient as an essential driver of cell proliferation, we find that the juxtaposition of cells with differential pathway activity is not required for proliferation. Additionally, our results demonstrate that, as is the case for patterning, Dpp controls wing growth entirely via repression of the target gene brinker (brk). The Dpp-Brk system converts an inherently uneven growth program, with excessive cell proliferation in lateral regions and low proliferation in medial regions, into a spatially homogeneous profile of cell divisions throughout the disc.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||07 Faculty of Science > Institute of Molecular Life Sciences|
|Dewey Decimal Classification:||570 Life sciences; biology|
|Deposited On:||02 Mar 2009 11:21|
|Last Modified:||27 Nov 2013 22:55|
|Publisher:||Company of Biologists|
|Additional Information:||Free full text article|
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