Polylysine-PEG copolymer barriers with dual character of both adsorption to tissue and prevention of cell adhesion

Dong Keun Han, Donald L. Hbert, Jeffrey A. Hubbell, Jong Man Kim, Kwang Duk Ahn

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The biocompatible barriers with dual character for surface active agents like biosurfactants were made by reacting cationic polylysine (PL) with nonionic poly(ethylene glycol) (PEG) to give block and graft PL-PEG copolymers, PL-6-PEG and poly-L-lysine (PLL)-g-PEG. In particular, PL-6-PEG block copolymers were synthesized by a new method using an activated succinimidyl ester of carboxymethylated MPEG (SCM-MPEG) and a blocked poly-ε-CBZ-lysine (PLZ). One component, PL, adsorbs to a cell or a tissue surface, and the other, PEG, which has no strong interaction with the surface, dangles away from it, thus blocks the adhesion of the cells or tissues to the surface. The chemical structures of the intermediates and copolymers were confirmed by 1H NMR, titration, and UV. The self-as-sembling PLL-g-PEG copolymers significantly reduced the adhesion of human foreskin fibroblasts (HFFs) and red blood cells (RBCs) due to the nonadhesive property and chain mobility of PEG attached, whereas PL-b-PEG did not. It, therefore, suggests that graft copolymers are more desirable than block ones in prevention of cell-tissue interactions.

Original languageEnglish
Pages (from-to)999-1006
Number of pages8
JournalPolymer (Korea)
Volume22
Issue number6
StatePublished - Dec 1 1998
Externally publishedYes

Fingerprint

Polylysine
Cell adhesion
Polyethylene glycols
Copolymers
Tissue
Adsorption
Lysine
Adhesion
Cells
Graft copolymers
Fibroblasts
Titration
Surface-Active Agents
Grafts
Block copolymers
Esters
Surface active agents
Blood
Nuclear magnetic resonance

Keywords

  • Biocompatible barriers
  • Biosurfactants
  • Cell-tissue interactions
  • Polylysine-PEG copolymers
  • Prevention of adhesions

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry

Cite this

Han, D. K., Hbert, D. L., Hubbell, J. A., Kim, J. M., & Ahn, K. D. (1998). Polylysine-PEG copolymer barriers with dual character of both adsorption to tissue and prevention of cell adhesion. Polymer (Korea), 22(6), 999-1006.

Polylysine-PEG copolymer barriers with dual character of both adsorption to tissue and prevention of cell adhesion. / Han, Dong Keun; Hbert, Donald L.; Hubbell, Jeffrey A.; Kim, Jong Man; Ahn, Kwang Duk.

In: Polymer (Korea), Vol. 22, No. 6, 01.12.1998, p. 999-1006.

Research output: Contribution to journalArticle

Han, DK, Hbert, DL, Hubbell, JA, Kim, JM & Ahn, KD 1998, 'Polylysine-PEG copolymer barriers with dual character of both adsorption to tissue and prevention of cell adhesion', Polymer (Korea), vol. 22, no. 6, pp. 999-1006.
Han, Dong Keun ; Hbert, Donald L. ; Hubbell, Jeffrey A. ; Kim, Jong Man ; Ahn, Kwang Duk. / Polylysine-PEG copolymer barriers with dual character of both adsorption to tissue and prevention of cell adhesion. In: Polymer (Korea). 1998 ; Vol. 22, No. 6. pp. 999-1006.
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