Glycoconjugate Journal

, Volume 27, Issue 1, pp 189–198 | Cite as

Novel proteoglycan glycotechnology: chemoenzymatic synthesis of chondroitin sulfate-containing molecules and its application

  • Masanori YamaguchiEmail author
  • Keiichi Takagaki
  • Kaoru Kojima
  • Naohiro Hayashi
  • Fengchao Chen
  • Ikuko Kakizaki
  • Atsushi Kon
  • Masahiko Endo


Proteoglycans consist of a protein core, with one or more glycosaminoglycan chains (i.e., chondroitin sulfate, dermatan sulfate and heparin sulfate) bound covalently to it. The glycosaminoglycan chains account for many of the functions and properties of proteoglycans. The development of proteoglycan glycotechnology to exploit the functionality of glycosaminoglycan chains is an extremely important aspect of glycobiology. Here we describe an efficient and widely applicable method for chemoenzymatic synthesis of conjugate compounds comprising intact long chondroitin sulfate (ChS) chains. An alkyne containing ChS was prepared by an enzymatic transfer reaction and linked with a chemically synthesized core compound containing an azido group using click chemistry. This method enabled highly efficient introduction of ChS into target materials. Furthermore, the ChS-introduced compounds had marked stability against proteolysis, and the chemically linked ChS chain contributed to the stability of these core compounds. We believe the present method will contribute to the development of proteoglycan glycobiology and technology.


Chondroitin sulfate Click chemistry Glycosaminoglycan Neo-proteoglycan Proteoglycan 







bovine serum albumin


chondroitin sulfate




4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium chloride




electrospray ionization tandem mass spectrometry








glucuronic acid


high-performance liquid chromatography




reverse phase


size exclusion chromatography







We dedicate this paper to the late Prof. Keiichi Takagaki. We thank Prof. Hironobu Hojo, University Tokai, for the amino acid analysis. We also thank Dr. Akiharu Ueki and Dr. Jun Wada for helpful discussion. This work was partly supported by Japan Society for the Promotion of Science (Gant-in-Aid for Young Scientists (B) No. 21710230), by the Found for the Promotion of International Scientific Research and by the Found for Cooperation for Innovative Technology and Advanced Research in Evolution Area (CITY AREA).


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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Masanori Yamaguchi
    • 1
    • 2
    Email author
  • Keiichi Takagaki
    • 2
  • Kaoru Kojima
    • 2
  • Naohiro Hayashi
    • 3
  • Fengchao Chen
    • 2
  • Ikuko Kakizaki
    • 2
  • Atsushi Kon
    • 2
  • Masahiko Endo
    • 2
  1. 1.Department of Organic Chemistry, Faculty of EducationWakayama UniversityWakayamaJapan
  2. 2.Department of Glycotechnology, Center for Advanced Medical ResearchHirosaki University Graduate School of MedicineHirosakiJapan
  3. 3.Otsuka Chemical Co., Ltd.TokushimaJapan

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