Powered by OpenAIRE graph
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ Journal of Cell Scie...arrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
Journal of Cell Science
Article . 2012 . Peer-reviewed
Data sources: Crossref
Development
Article . 2012 . Peer-reviewed
Data sources: Crossref
versions View all 3 versions

Modulation ofgurkenTranslation by Insulin/TOR Signaling in Drosophila

Authors: Scott B, Ferguson; Malachi A, Blundon; Martha S, Klovstad; Trudi, Schüpbach;

Modulation ofgurkenTranslation by Insulin/TOR Signaling in Drosophila

Abstract

Localized Gurken translation specifies the anterior/posterior and dorsal/ventral axes of the developing Drosophila oocyte. spindle-class females lay ventralized eggs resulting from inefficient grk translation. This phenotype is thought to result from inhibition of the Vasa RNA helicase. In a screen for modifiers of the eggshell phenotype in spn-B flies, we identified a mutation in the lnk gene. We show that lnk mutations restore Grk expression, but do not suppress the persistence of double strand breaks nor other spn-B phenotypes. This suppression does not affect Egfr directly, but rather overcomes the translational block of grk messages seen in spindle mutants. Lnk was recently identified as a component of the insulin/insulin-like growth factor signaling (IIS) / TOR pathway. Interestingly, direct inhibition of TOR with rapamycin can also suppress the ventralized eggshell phenotype in spn-B or vasa mutant mothers. When dietary protein is inadequate, reduced IIS/TOR activity inhibits cap-dependent translation by promoting the activity of the translation inhibitor eIF4E binding protein. We hypothesize that reduced TOR activity promotes grk translation independent of the canonical Vasa/cap-dependent mechanism. This model suggests a means by which flies can maintain the translation of developmentally important transcripts during periods of nutrient limitation when bulk cap-dependent translation is repressed.

Keywords

Male, RNA Caps, TOR Serine-Threonine Kinases, Down-Regulation, Transforming Growth Factor alpha, Animals, Genetically Modified, Drosophila melanogaster, Protein Biosynthesis, Animals, Drosophila Proteins, Insulin, Female, RNA Helicases, Signal Transduction

  • BIP!
    Impact byBIP!
    citations
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    27
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Top 10%
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Top 10%
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Top 10%
Powered by OpenAIRE graph
citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
27
Top 10%
Top 10%
Top 10%
bronze