PP2A phosphatase is required for dendrite pruning via actin regulation in Drosophila.

ABSTRACT: Large-scale pruning, the developmentally regulated degeneration of axons or dendrites, is an important specificity mechanism during neuronal circuit formation. The peripheral sensory class IV dendritic arborization (c4da) neurons of Drosophila larvae specifically prune their dendrites at the onset of metamorphosis in an ecdysone-dependent manner. Dendrite pruning requires local cytoskeleton remodeling, and the actin-severing enzyme Mical is an important ecdysone target. In a screen for pruning factors, we identified the protein phosphatase 2 A (PP2A). PP2A interacts genetically with the actin-severing enzymes Mical and cofilin as well as other actin regulators during pruning. Moreover, Drosophila cofilin undergoes a change in localization at the onset of metamorphosis indicative of a chang

SUBMITTER: Wolterhoff N 

PROVIDER: S-EPMC7202059 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature