Cited by 127Proteoglycans and glycosaminoglycans researchNerve injury and regenerationAxon Guidance and Neuronal Signaling

Neurite outgrowth in brain neurons induced by heparin-binding growth-associated molecule (HB-GAM) depends on the specific interaction of HB-GAM with heparan sulfate at the cell surface.

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Kinnunen, Tarja, Raulo, Erkki, Nolo, Riitta, Maccarana, Marco, Lindahl, Ulf, Rauvala, Heikki·1996·Journal of Biological Chemistry

Abstract

Heparin-binding growth-associated molecule (HB-GAM) is a cell-surface- and extracellular matrix-associated protein that lines developing axons in vivo and promotes neurite outgrowth in vitro. Because N-syndecan (syndecan-3) was found to function as a receptor in HB-GAM-induced neurite outgrowth, we have now studied whether the heparan sulfate side chains of N-syndecan play a role in HB-GAM-neuron interactions. N-Syndecan from postnatal rat brain was found to inhibit HB-GAM-induced but not laminin-induced neurite outgrowth when added to the assay media. The inhibitory activity was abolished by treating N-syndecan with heparitinase, but it was retained in N-syndecan-derived free glycosaminoglycan chains, suggesting that N-syndecan heparan sulfate at the cell surface is involved in HB-GAM-induced neurite outgrowth. Binding to HB-GAM and inhibition of neurite outgrowth was observed with heparin-related polysaccharides only; galactosaminoglycans were inactive. Significant inhibition of neurite outgrowth was induced by heparin and by N-syndecan heparan sulfate but not by heparan sulfates from other sources. A minimum of 10 monosaccharide residues were required for HB-GAM-induced neurite outgrowth. Experiments with selectively desulfated heparins indicated that 2-O-sulfated iduronic acid units, in particular, are of importance to the interaction with HB-GAM, were implicated to a lesser extent. Structural analysis of N-syndecan from 6-day-old rat brain indicated that the heparan sulf…

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Crossref · 10.1074/jbc.271.4.2243

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Authors
Kinnunen, T., Raulo, E., Nolo, R., Maccarana, M., Lindahl, U., & Rauvala, H.
Affiliations
  • University of Helsinki (FI)
  • Uppsala University (SE)
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1996-01
Volume
271
Issue
4
Pages
2243-2248
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2004338203
Cited by
127
References
43
Citations by year
2025: 2 · 2023: 2 · 2022: 1 · 2020: 1 · 2019: 2 · 2018: 1 · 2017: 4 · 2016: 1 · 2015: 3 · 2014: 7 · 2013: 1 · 2012: 2
FWCI
3.16
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Proteoglycans and glycosaminoglycans research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Axon Guidance and Neuronal Signaling
Keywords
neurite outgrowth, syndecan-3, heparan sulfate, heparan sulfate proteoglycans, heparin, laminin, growth factor binding, axon guidance, brain neurons, heparitinase
MeSH terms
Animals, Binding, Competitive, Brain, Carrier Proteins, Cells, Cultured, Heparitin Sulfate, Heparan Sulfate, Membrane Glycoproteins, Nerve Tissue Proteins, Oligosaccharides, Polysaccharides, Proteoglycans, Recombinant Proteins, Cytokines, Neurites, Rats, Syndecan-3

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