Neurturin shares receptors and signal transduction pathways with glial cell line-derived neurotrophic factor in sympathetic neurons

Douglas J. Creedon, Malú G. Tansey, Robert H. Baloh, Patricia A. Osborne, Patricia A. Lampe, Timothy J. Fahrner, Robert O. Heuckeroth, Jeffrey Milbrandt, Eugene M. Johnson

Research output: Contribution to journalArticle

193 Citations (Scopus)

Abstract

Neurturin (NTN) is a neurotrophic factor that shares homology with glial cell line-derived neurotrophic factor (GDNF). Recently, a receptor complex has been identified for GDNF that includes the Ret tyrosine kinase receptor and a glycosylphosphatidylinositol-linked protein termed 'GDNFRα.' However, differences in the phenotype of Rot and GDNF knockout animals suggest that Ret has at least one additional ligand. In this report, we demonstrate that NTN induces Ret phosphorylation in primary cultures of rat superior cervical ganglion (SCG) neurons. NTN also caused Ret phosphorylation in fibroblasts that were transfected stably with Ret and GDNFRα but not in cells expressing Ret alone. A glycosylphosphatidylinositol-linked protein also was important for NTN and GDNF signaling in SCG neurons; phosphatidylinositol-specific phospholipase C treatment of SCG cultures reduced the ability of NTN to phosphorylate Ret and the ability of NTN or GDNF to activate the mitogen- activated protein kinase pathway. NTN and GDNF also caused sustained activation of Ret and the mitogen-activated protein kinase pathway in SCG neurons. Finally, both NTN and GDNF activated the phosphatidylinositol 3- kinase pathway in SCG neurons, which may be important for the ability of NTN and GDNF to promote neuronal survival. These data indicate that NTN is a physiologically relevant ligand for the Ret receptor and suggest that NTN may have a critical role in the development of many neuronal populations.

Original languageEnglish (US)
Pages (from-to)7018-7023
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume94
Issue number13
DOIs
StatePublished - Jun 24 1997
Externally publishedYes

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Neurturin
Glial Cell Line-Derived Neurotrophic Factor
Signal Transduction
Neurons
Superior Cervical Ganglion
GPI-Linked Proteins
Mitogen-Activated Protein Kinases
Phosphorylation
Phosphatidylinositol 3-Kinase
Ligands
Phosphoinositide Phospholipase C
Nerve Growth Factors
Receptor Protein-Tyrosine Kinases

ASJC Scopus subject areas

  • General
  • Genetics

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Neurturin shares receptors and signal transduction pathways with glial cell line-derived neurotrophic factor in sympathetic neurons. / Creedon, Douglas J.; Tansey, Malú G.; Baloh, Robert H.; Osborne, Patricia A.; Lampe, Patricia A.; Fahrner, Timothy J.; Heuckeroth, Robert O.; Milbrandt, Jeffrey; Johnson, Eugene M.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 94, No. 13, 24.06.1997, p. 7018-7023.

Research output: Contribution to journalArticle

Creedon, Douglas J. ; Tansey, Malú G. ; Baloh, Robert H. ; Osborne, Patricia A. ; Lampe, Patricia A. ; Fahrner, Timothy J. ; Heuckeroth, Robert O. ; Milbrandt, Jeffrey ; Johnson, Eugene M. / Neurturin shares receptors and signal transduction pathways with glial cell line-derived neurotrophic factor in sympathetic neurons. In: Proceedings of the National Academy of Sciences of the United States of America. 1997 ; Vol. 94, No. 13. pp. 7018-7023.
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