Cited by 75Nerve injury and regenerationProteoglycans and glycosaminoglycans researchSpinal Cord Injury Research

Identification of a critical sulfation in chondroitin that inhibits axonal regeneration

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Pearson, Craig S, Mencio, Caitlin P, Barber, Amanda C, Martin, Keith R, Geller, Herbert M·2018·eLife

Abstract

The failure of mammalian CNS neurons to regenerate their axons derives from a combination of intrinsic deficits and extrinsic factors. Following injury, chondroitin sulfate proteoglycans (CSPGs) within the glial scar inhibit axonal regeneration, an action mediated by the sulfated glycosaminoglycan (GAG) chains of CSPGs, especially those with 4-sulfated (4S) sugars. Arylsulfatase B (ARSB) selectively cleaves 4S groups from the non-reducing ends of GAG chains without disrupting other, growth-permissive motifs. We demonstrate that ARSB is effective in reducing the inhibitory actions of CSPGs both in in vitro models of the glial scar and after optic nerve crush (ONC) in adult mice. ARSB is clinically approved for replacement therapy in patients with mucopolysaccharidosis VI and therefore represents an attractive candidate for translation to the human CNS.

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  • CS-56 analysis revealed significant increases in total extracellular CSPG in the subiculum but not visual cortex of 5xFAD mice at early stages of PNN loss.

    “Analysis of total extracellular CSPG with CS-56 at early stages of PNN loss, which generally labels CSPGs excluded from PNNs e.g. those found in glial scars [54, 55], revealed significant increases in the subiculum but not visual cortex (p<0.05, p = 0.0818) of 5xFAD mice (Fig. S2A-C).”

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Authors
Pearson, C. S., Mencio, C. P., Barber, A. C., Martin, K. R., & Geller, H. M.
Affiliations
  • National Institutes of Health (US)
  • University of Cambridge (GB)
Corresponding author
  • Martin, Keith R
  • Geller, Herbert M
Venue
eLife
Published
2018-05-15
Volume
7
ISSN
2050-084X (ISSN-L)
OpenAlex
W2803597233
Cited by
75
References
54
Citations by year
2026: 3 · 2025: 7 · 2024: 13 · 2023: 12 · 2022: 13 · 2021: 5 · 2020: 11 · 2019: 9 · 2018: 2
FWCI
3.08
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, public-domain)
  • PubMed Central (publishedVersion, public-domain)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Minerva Access (University of Melbourne) (submittedVersion)
  • Apollo (University of Cambridge) (submittedVersion, public-domain)
  • Apollo
Funders
  • National Institutes of Health (1ZIAHL006135)
  • Cambridge Eye Trust
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Proteoglycans and glycosaminoglycans research
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Spinal Cord Injury Research
Keywords
chondroitin sulfate proteoglycans, axon regeneration, glial scar, arylsulfatase B, optic nerve crush, central nervous system injury, mucopolysaccharidosis type VI, sulfation, neuroprotection
MeSH terms
Animals, Axons, Cells, Cultured, Disease Models, Animal, Humans, Chondroitin Sulfate Proteoglycans, Regeneration, Sulfates, Treatment Outcome, N-Acetylgalactosamine-4-Sulfatase, Optic Nerve Injuries, Mice

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