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Macromolecular Research

, Volume 20, Issue 1, pp 93–100 | Cite as

Characterization and hepatocytes adhesion of galactosylated poly(D,L-lactic-co-glycolic acid) surface

  • Lee Choi
  • Soon Jong Kwak
  • Su Jung You
  • Heung Jae Chun
  • Hong Lim Kim
  • Young Bock Shim
  • Moon Suk Kim
  • Ki Dong Park
Articles

Abstract

The present study demonstrated that covalently galactosylated poly(D,L-lactic-co-glycolic acid) (PLGA) surface encourages hepatocyte adhesion and growth to form a dense cell network. Galactosylation of the PLGA surface was accomplished by grafting allylamine (AA) using inductively coupled plasma-assisted chemical vapor deposition (ICP-CVD) and conjugating lactobionic acid (LA) with AA via 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and N-hydroxysuccinimide (EDC/NHS) activation. The modified surface was characterized by Fourier transform infrared spectroscopy in the attenuated total reflectance, electron spectroscopy of chemical analysis, atomic force microscopy, and contact angle measurement. For evaluation of cell affinity in vitro, primary rat hepatocytes were prepared and seeded onto the modified PLGA surfaces. The galactosylated PLGA surface showed more pronounced hepatocyte adhesion and growth compared to those on the control PLGA surface. The hepatocytes seeded on galactosylated substrates exhibited a radial migration with filopodial growth to form multicellular aggregates, whereas those on control PLGA showed slowly adhered rounded shapes. Moreover, galactosylation increased metabolic hepatocyte activities such as albumin secretion and urea synthesis. Open image in new window

Keywords

poly(D,L-lactic-co-glycolic acid) (PLGA) allylamine inductively coupled plasma-assisted chemical vapor deposition (ICP-CVD) galactose ligand hepatocyte multicellular aggregates 

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Copyright information

© The Polymer Society of Korea and Springer Netherlands 2012

Authors and Affiliations

  • Lee Choi
    • 1
    • 2
  • Soon Jong Kwak
    • 4
  • Su Jung You
    • 2
  • Heung Jae Chun
    • 1
    • 2
    • 3
  • Hong Lim Kim
    • 3
  • Young Bock Shim
    • 5
  • Moon Suk Kim
    • 6
  • Ki Dong Park
    • 6
  1. 1.Department of Biomedical SciencesCatholic UniversitySeoulKorea
  2. 2.Institute of Cell & Tissue EngineeringCatholic UniversitySeoulKorea
  3. 3.Integrative Research Support Center, College of MedicineCatholic UniversitySeoulKorea
  4. 4.Polymer Hybrid Research CenterKorea Institute of Science and TechnologySeoulKorea
  5. 5.Research Institute of Biomedical EngineeringKorea Bone Bank Co. Ltd.SeoulKorea
  6. 6.Department of Molecular Science and TechnologyAjou UniversityGyeonggiKorea

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