Chondroitin sulfate of appican, the proteoglycan form of amyloid precursor protein, produced by C6 glioma cells interacts with heparin-binding neuroregulatory factors

Yuko Umehara, Shuhei Yamada, Shuji Nishimura, Junichi Shioi, Nikolaos K. Robakis, Kazuyuki Sugahara

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Appican produced by rat C6 glioma cells, the chondroitin sulfate (CS) proteoglycan form of the amyloid precursor protein, contains an E disaccharide, -GlcUA-GalNAc(4,6-O-disulfate)-, in its CS chain. In this study, the appican CS chain from rat C6 glioma cells was shown to specifically bind several growth/differentiation factors including midkine (MK) and pleiotrophin (PTN). In contrast, the appican CS from SH-SY5Y neuroblastoma cells contained no E disaccharide and showed no binding to either MK or PTN. These findings indicate that the E motif is essential in the interaction of the appican CS chain with growth/differentiation factors, and suggest that glial appican may mediate the regulation of neuronal cell adhesion and migration and/or neurite outgrowth.

Original languageEnglish
Pages (from-to)233-238
Number of pages6
JournalFEBS Letters
Volume557
Issue number1-3
DOIs
StatePublished - 16 Jan 2004

Keywords

  • Alzheimer's disease
  • Amyloid precursor protein
  • Appican
  • Chondroitin sulfate
  • Heparin-binding growth factor

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