Compartmentalized Calcium Transients Trigger Dendrite Pruning in Drosophila Sensory Neurons
2013
Kanamori, Takahiro | Kanai, Makoto I. | Dairyo, Yusuke | Yasunaga, Kei-ichiro | Morikawa, Rei K. | Emoto, Kazuo
Dendritic Pruning During metamorphosis, Drosophila sensory neurons eliminate their dendritic trees, but axons and soma remain intact. Kanamori et al. (p. 1475, published online 30 May) demonstrate that compartmentalized calcium transients in dendrites function as the spatiotemporal cue for pruning of unwanted branches. Such a localized calcium signal, induced by a local elevation of branch excitability, activates calcium-dependent proteinases and eventually causes branch death.
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