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Protein signal is crucial for accurate control of insect size
Date:5/4/2012

to recovery from injury and cancer," said Dominguez.

EMBO Member Pierre Lopold and collaborators from the Institute of Biology Valrose at the University of Nice, France, identified the same protein using a different experimental approach. "We used a genome-wide RNA interference approach to look for Drosophila gene candidates that might be involved in coupling growth with the timing of development. Out of 11,000 genes that we tested in our genetic screen, only one was able, upon silencing, to rescue the delay in development induced by conditions that perturb tissue growth. This candidate gene corresponded to dilp8, which is exactly same gene identified by Dominguez and collaborators."

The expression of the dilp8 gene reduces tissue growth, which suggests that in addition to its role in preventing the hormonal induction of metamorphosis, dilp8 could act by slowing the growth of healthy tissues to stay synchronized with slow-growing tissue.

Until now, little information at the molecular level has been available about how organ growth is monitored and coordinated with the timing of development in insects and other complex organisms. Dilp8 appears to be part of the molecular machinery that helps tissues to grow and develop at the right pace.


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Contact: Barry Whyte
barry.whyte@embo.org
49-622-188-91108
European Molecular Biology Organization
Source:Eurekalert  

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