期刊
JOURNAL OF BIOLOGICAL CHEMISTRY
卷 281, 期 5, 页码 2605-2611出版社
AMER SOC BIOCHEMISTRY MOLECULAR BIOLOGY INC
DOI: 10.1074/jbc.M512767200
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资金
- NIAMS NIH HHS [AR48120] Funding Source: Medline
- NIGMS NIH HHS [GM63861] Funding Source: Medline
- NINDS NIH HHS [NS045710, R01 NS060648, NS44521, NS40480] Funding Source: Medline
Netrins, a family of secreted molecules, play important roles in axon pathfinding during nervous system development. Although phosphatidylinositol signaling has been implicated in this event, how netrin-1 regulates phosphatidylinositol signaling remains poorly understood. Here we provide evidence that netrin-1 stimulates phosphatidylinositol bisphosphate hydrolysis in cortical neurons. This event appears to be mediated by DCC (deleted in colorectal cancer), but not neogenin or Unc5h2. Netrin-1 induces phospholipase C gamma (PLC gamma) tyrosine phosphorylation. Inhibition of PLC activity attenuates netrin-1-induced cortical neurite outgrowth. These results suggest that netrin-1 regulates phosphatidylinositol turnover and demonstrate a crucial role of PLC signaling in netrin-1-induced neurite elongation.
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