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Dorsal root ganglia neurite extension is inhibited by mechanical and chondroitin sulfate-rich interfaces.

Publication ,  Journal Article
Yu, X; Bellamkonda, RV
Published in: Journal of neuroscience research
October 2001

Glial scar formation plays a critical role in the regenerative failure in the central nervous system of adult mammals through the formation of mechanical or biochemical barriers as a result of its molecular composition. In this study, we report an in vitro model to study growth-cone behavior at controlled 3D interfaces using layered agarose hydrogels. The behavior of growth cones from embryonic day 9 (E9) chick dorsal root ganglia (DRGs) at interfaces that were mismatched in terms of their elasticity or chondroitin sulfate content was quantitatively determined. A mechanical barrier formed by the elasticity mismatch of layered agarose gels greatly influenced the ability of neurites from E9 DRGs to cross the 3D interface. To form chondroitin sulfate-rich interfaces, chondroitin sulfate B was covalently coupled to agarose hydrogel. Compared with unmodified agarose gels, the presence of CS-B-modified agarose gels at the interface significantly inhibited E9 DRGs neurites. After treatment of CS-B-modified agarose gels with chondroitinase ABC, the inhibitory effects of CS-B at the interface were significantly decreased. The effect of doping CS-B gels with laminin 1 (LN-1)-coupled agarose gels was investigated as a potential strategy to overcome inhibitory interfaces. When CS-B agarose gels were doped with LN-1-coupled agarose gels, DRG neurite's ability to cross 3D interfaces was significantly enhanced compared with that of non-LN-1-containing interfaces presenting equivalent CS-B. Our in vitro model may be used to study the influence of individual components of glial scar on inhibition as well as to design strategies to overcome this inhibition.

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Published In

Journal of neuroscience research

DOI

EISSN

1097-4547

ISSN

0360-4012

Publication Date

October 2001

Volume

66

Issue

2

Start / End Page

303 / 310

Related Subject Headings

  • Surface Properties
  • Stress, Mechanical
  • Sepharose
  • Rheology
  • Neurons, Afferent
  • Neurology & Neurosurgery
  • Neurites
  • Laminin
  • Hydrogels
  • Gliosis
 

Citation

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Yu, X., & Bellamkonda, R. V. (2001). Dorsal root ganglia neurite extension is inhibited by mechanical and chondroitin sulfate-rich interfaces. Journal of Neuroscience Research, 66(2), 303–310. https://doi.org/10.1002/jnr.1225
Yu, X., and R. V. Bellamkonda. “Dorsal root ganglia neurite extension is inhibited by mechanical and chondroitin sulfate-rich interfaces.Journal of Neuroscience Research 66, no. 2 (October 2001): 303–10. https://doi.org/10.1002/jnr.1225.
Yu X, Bellamkonda RV. Dorsal root ganglia neurite extension is inhibited by mechanical and chondroitin sulfate-rich interfaces. Journal of neuroscience research. 2001 Oct;66(2):303–10.
Yu, X., and R. V. Bellamkonda. “Dorsal root ganglia neurite extension is inhibited by mechanical and chondroitin sulfate-rich interfaces.Journal of Neuroscience Research, vol. 66, no. 2, Oct. 2001, pp. 303–10. Epmc, doi:10.1002/jnr.1225.
Yu X, Bellamkonda RV. Dorsal root ganglia neurite extension is inhibited by mechanical and chondroitin sulfate-rich interfaces. Journal of neuroscience research. 2001 Oct;66(2):303–310.
Journal cover image

Published In

Journal of neuroscience research

DOI

EISSN

1097-4547

ISSN

0360-4012

Publication Date

October 2001

Volume

66

Issue

2

Start / End Page

303 / 310

Related Subject Headings

  • Surface Properties
  • Stress, Mechanical
  • Sepharose
  • Rheology
  • Neurons, Afferent
  • Neurology & Neurosurgery
  • Neurites
  • Laminin
  • Hydrogels
  • Gliosis