Drosophila araucan and caupolican integrate intrinsic and signalling inputs for the acquisition by muscle progenitors of the lateral transverse fate

A central issue of myogenesis is the acquisition of identity by individual muscles. In Drosophila, at the time muscle progenitors are singled out, they already express unique combinations of muscle identity genes. This muscle code results from the integration of positional and temporal signalling in...

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Veröffentlicht in:PLoS genetics 2011-07, Vol.7 (7), p.e1002186-e1002186
Hauptverfasser: Carrasco-Rando, Marta, Tutor, Antonio S, Prieto-Sánchez, Silvia, González-Pérez, Esther, Barrios, Natalia, Letizia, Annalisa, Martín, Paloma, Campuzano, Sonsoles, Ruiz-Gómez, Mar
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container_issue 7
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container_title PLoS genetics
container_volume 7
creator Carrasco-Rando, Marta
Tutor, Antonio S
Prieto-Sánchez, Silvia
González-Pérez, Esther
Barrios, Natalia
Letizia, Annalisa
Martín, Paloma
Campuzano, Sonsoles
Ruiz-Gómez, Mar
description A central issue of myogenesis is the acquisition of identity by individual muscles. In Drosophila, at the time muscle progenitors are singled out, they already express unique combinations of muscle identity genes. This muscle code results from the integration of positional and temporal signalling inputs. Here we identify, by means of loss-of-function and ectopic expression approaches, the Iroquois Complex homeobox genes araucan and caupolican as novel muscle identity genes that confer lateral transverse muscle identity. The acquisition of this fate requires that Araucan/Caupolican repress other muscle identity genes such as slouch and vestigial. In addition, we show that Caupolican-dependent slouch expression depends on the activation state of the Ras/Mitogen Activated Protein Kinase cascade. This provides a comprehensive insight into the way Iroquois genes integrate in muscle progenitors, signalling inputs that modulate gene expression and protein activity.
doi_str_mv 10.1371/journal.pgen.1002186
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subjects Acquisitions & mergers
Animals
Animals, Genetically Modified
Base Sequence
Biology
Cell Line
Drosophila
Drosophila melanogaster - cytology
Drosophila melanogaster - embryology
Drosophila melanogaster - genetics
Drosophila Proteins - genetics
Drosophila Proteins - metabolism
Embryo, Nonmammalian - embryology
Embryo, Nonmammalian - metabolism
Gene expression
Gene Expression Regulation, Developmental
Genetic aspects
Genomics
Homeodomain Proteins - genetics
Homeodomain Proteins - metabolism
In Situ Hybridization
Insects
Kinases
Microscopy, Confocal
Mitogen-Activated Protein Kinases - metabolism
Muscle Development - genetics
Muscles - embryology
Muscles - metabolism
Nuclear Proteins - genetics
Nuclear Proteins - metabolism
Physiological aspects
Proteins
ras Proteins - metabolism
Sequence Homology, Nucleic Acid
Signal Transduction - genetics
Transcription Factors - genetics
Transcription Factors - metabolism
Zebrafish
title Drosophila araucan and caupolican integrate intrinsic and signalling inputs for the acquisition by muscle progenitors of the lateral transverse fate
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