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Confocal analysis of hedgehog morphogenetic gradient coupled with fluorescent in situ hybridization of hedgehog target genes

Authors :
Gallet, Armel
Thérond, Pascal P
Institut de signalisation, biologie du développement et cancer ( ISBDC )
Université Nice Sophia Antipolis ( UNS )
Université Côte d'Azur ( UCA ) -Université Côte d'Azur ( UCA ) -Centre National de la Recherche Scientifique ( CNRS )
Institut de signalisation, biologie du développement et cancer (ISBDC)
Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS)
COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)
Source :
Methods in Molecular Biology (Clifton then Totova), Methods in Molecular Biology (Clifton then Totova), Humana Press (Springer Imprint), 2007, 397, pp.105-14, Methods in Molecular Biology, Methods in Molecular Biology, Humana Press/Springer Imprint, 2007, 397, pp.105-14
Publication Year :
2007
Publisher :
HAL CCSD, 2007.

Abstract

Hedgehog (Hh) family members are secreted proteins that can act at short and long range to direct cell fate decisions during developmental processes. In both Drosophila and vertebrates, the morphogenetic gradient of Hh must be tightly regulated for correct patterning. The posttranslational modification of Hh by a cholesterol adduct participates in such regulation. We have shown that cholesterol modification is necessary for the controlled long-range activity of Drosophila Hh, as observed for its vertebrate counterpart Sonic Hh. The presence of cholesterol on Hh allows the observation of large apical punctuate structures of Hh (Hh-LPSs) at a distance from the Hh source both in embryos and in imaginal discs. The Hh-LPSs apical distribution reflects the Hh gradient and is temporally regulated. Hh gradient modulation is directly related to the dynamic expression of the Hh target gene serrate (ser), shown by immunofluorescent detection of Hh coupled with fluorescent in situ hybridization of ser.

Details

Language :
English
ISSN :
10643745 and 19406029
Database :
OpenAIRE
Journal :
Methods in Molecular Biology (Clifton then Totova), Methods in Molecular Biology (Clifton then Totova), Humana Press (Springer Imprint), 2007, 397, pp.105-14, Methods in Molecular Biology, Methods in Molecular Biology, Humana Press/Springer Imprint, 2007, 397, pp.105-14
Accession number :
edsair.pmid.dedup....84f4f587d50dc9d98deb3fd4406a57b5