Abstract
Axonal regeneration in the adult central nervous system (CNS) is limited by two proteins in myelin, Nogo and myelin-associated glycoprotein (MAG). The receptor for Nogo (NgR) has been identified as an axonal glycosyl-phosphatidyl-inositol (GPI)–anchored protein, whereas the MAG receptor has remained elusive. Here, we show that MAG binds directly, with high affinity, to NgR. Cleavage of GPI-linked proteins from axons protects growth cones from MAG-induced collapse, and dominant-negative NgR eliminates MAG inhibition of neurite outgrowth. MAG-resistant embryonic neurons are rendered MAG-sensitive by expression of NgR. MAG and Nogo-66 activate NgR independently and serve as redundant NgR ligands that may limit axonal regeneration after CNS injury.
References
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- Supported by research grants from the NIH the McKnight Foundation the Institute for the Study of Aging and Biogen Inc. (S.M.S.); and an institutional training grant from the NIH (B.P.L.). T.G. is a Bayer predoctoral scholar and S.M.S. is an investigator of the Patrick and Catherine Weldon Donaghue Medical Research Foundation.
Dates
Type | When |
---|---|
Created | 22 years, 10 months ago (Oct. 1, 2002, 3:34 p.m.) |
Deposited | 1 year, 7 months ago (Jan. 9, 2024, 9:59 p.m.) |
Indexed | 1 week, 3 days ago (Aug. 21, 2025, 2:17 p.m.) |
Issued | 23 years ago (Aug. 16, 2002) |
Published | 23 years ago (Aug. 16, 2002) |
Published Print | 23 years ago (Aug. 16, 2002) |
@article{Liu_2002, title={Myelin-Associated Glycoprotein as a Functional Ligand for the Nogo-66 Receptor}, volume={297}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.1073031}, DOI={10.1126/science.1073031}, number={5584}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Liu, Betty P. and Fournier, Alyson and GrandPré, Tadzia and Strittmatter, Stephen M.}, year={2002}, month=aug, pages={1190–1193} }