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PMID: 15953414 Published · ppublish English Comparative Study Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S.

MAG induces regulated intramembrane proteolysis of the p75 neurotrophin receptor to inhibit neurite outgrowth.

Neuron ·Vol. 46 ·No. 6 ·2005-06-16 ·Pages 849-55

Domeniconi M, Zampieri N, Spencer T, Hilaire M, Mellado W, Chao MV, Filbin MT

Abstract

The three known inhibitors of axonal regeneration present in myelin--MAG, Nogo, and OMgp--all interact with the same receptor complex to effect inhibition via protein kinase C (PKC)-dependent activation of the small GTPase Rho. The transducing component of this receptor complex is the p75 neurotrophin receptor. Here we show that MAG binding to cerebellar neurons induces alpha- and then gamma-secretase proteolytic cleavage of p75, in a protein kinase C-dependent manner, and that this cleavage is necessary for both activation of Rho and inhibition of neurite outgrowth.

MeSH Terms
Amyloid Precursor Protein Secretases Animals Animals, Newborn Aspartic Acid Endopeptidases/pharmacology Blotting, Western/methods Cells, Cultured Cerebellum/cytology Cricetinae Cricetulus Drug Interactions Endopeptidases Enzyme Activation/drug effects Enzyme Inhibitors/pharmacology Membrane Proteins/metabolism Myelin-Associated Glycoprotein/pharmacology Neural Inhibition/drug effects Neurites/drug effects,physiology Neuroblastoma Neurons/drug effects,physiology Oligopeptides/pharmacology Protein Structure, Tertiary/physiology Rats Receptor, Nerve Growth Factor Receptors, Nerve Growth Factor/chemistry,metabolism Recombinant Fusion Proteins/metabolism,pharmacology Tetradecanoylphorbol Acetate/pharmacology Transfection/methods rho GTP-Binding Proteins/metabolism
Chemicals
Enzyme Inhibitors Membrane Proteins Myelin-Associated Glycoprotein Oligopeptides Receptor, Nerve Growth Factor Receptors, Nerve Growth Factor Recombinant Fusion Proteins Amyloid Precursor Protein Secretases Endopeptidases Aspartic Acid Endopeptidases rho GTP-Binding Proteins Tetradecanoylphorbol Acetate epoxomicin
Authors & Affiliations
7 authors, click to expand affiliations / ORCID
Domeniconi Marco
Biology Department, Hunter College, City University of New York, 695 Park Avenue, New York, New York 10021, USA.
Zampieri Niccolò
Spencer Tim
Hilaire Melissa
Mellado Wilfredo
Chao Moses V
Filbin Marie T
Article Info
Journal
Neuron
Abbr.
Neuron
ISSN
0896-6273
Published
2005-06-16
Pages
849-55
Language
English
Region
United States
NLM ID
8809320
Subset
IM
Grants
NICHD NIH HHS · HD23315 · United States
DS NIH HHS · NINDS NS 37060 · United States
NINDS NIH HHS · NS21072 · United States
NINDS NIH HHS · NS41073 · United States
Corrections
CommentIn
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