Broadcasting ERK activation in the early Drosophila embryo
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ABSTRACT: The highly conserved ERK cascade controls development and physiology and is genetically deregulated in human birth defects, neurocognitive disorders, and cancers. While the list of the known ERK functions in different tissues and organisms is vast and steadily growing, the full spectrum of processes controlled by any specific ERK activation event remains unknown. Here we show how new ERK functions can be systematically identified using targeted perturbations and global readouts of cell signaling systems. Our experimental model is the early Drosophila embryo, where ERK activation at the embryonic poles has thus far only been associated with transcriptional patterning of the terminal structures of the future larva. Based on the phosphoproteomic profiling after acute optogenetic perturbations of ERK signaling, we demonstrate that ERK activation at the poles is also critical for maintaining the speed and synchrony of embryonic cleavage cell cycles throughout the embryo. The presented approach sets the stage for a more complete understanding of signaling systems in health and disease.
INSTRUMENT(S): Orbitrap Fusion Lumos
ORGANISM(S): Drosophila Melanogaster (fruit Fly)
TISSUE(S): Embryo
SUBMITTER: Audrey Zhu
LAB HEAD: Martin Helmut Wuhr
PROVIDER: PXD043371 | Pride | 2024-09-03
REPOSITORIES: Pride
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