A conserved PTEN/FOXO pathway regulates neuronal morphology during C. elegans development.
A conserved PTEN/FOXO pathway regulates neuronal morphology during C. elegans development.
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DOI:
10.1242/dev.069062
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发表时间:
2011-12
期刊:
影响因子:
--
通讯作者:
Colón-Ramos DA
中科院分区:
文献类型:
--
作者:
Christensen R;de la Torre-Ubieta L;Bonni A;Colón-Ramos DA
The phosphatidylinositol 3-kinase (PI3K) signaling pathway is a conserved signal transduction cascade that is fundamental for the correct development of the nervous system. The major negative regulator of PI3K signaling is the lipid phosphatase DAF-18/PTEN, which can modulate PI3K pathway activity during neurodevelopment. Here, we identify a novel role for DAF-18 in promoting neurite outgrowth during development in Caenorhabditis elegans. We find that DAF-18 modulates the PI3K signaling pathway to activate DAF-16/FOXO and promote developmental neurite outgrowth. This activity of DAF-16 in promoting outgrowth is isoform-specific, being effected by the daf-16b isoform but not the daf-16a or daf-16d/f isoform. We also demonstrate that the capacity of DAF-16/FOXO in regulating neuron morphology is conserved in mammalian neurons. These data provide a novel mechanism by which the conserved PI3K signaling pathway regulates neuronal cell morphology during development through FOXO.
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