Cell adhesion and accelerated detachment on the surface of temperature-sensitive chitosan and poly(N-isopropylacrylamide) hydrogels

  • Jinyan Wang
  • Li Chen
  • Yiping Zhao
  • Gang Guo
  • Rui Zhang
Article

Abstract

A series of temperature-sensitive poly(NIPAAm-co-CSA) hydrogels were synthesized by the copolymerization of acrylic acid-derivatized Chitosan (CSA) and N-isopropylacrylamide (NIPAAm) in aqueous solution. Their swelling properties and L929 cell adhesion and detachment behaviors were studied. It was found that poly(NIPAAm-co-CSA) hydrogels were temperature-sensitive associated with the roles of the component PNIPAAm. Most significantly, poly(NIPAAm-co-CSA) hydrogels exhibited simultaneously good swelling properties. The investigation of L929 cell adhesion and detachment of poly(NIPAAm-co-CSA) hydrogels indicated the cell adhesion and spreading was higher on the surface of poly(NIPAAm-co-CSA) hydrogels than that of PNIPAAm hydrogel at 37°C due to the incorporation of CS, which having excellent cell affinity. Poly(NIPAAm-co-CSA) hydrogels showed more rapid detachment of cell sheet compared to PNIPAAm hydrogel because of the highly hydrophilic and hygroscopic nature of CS chains when reducing the culture temperature from 37°C to 20°C.

Notes

Acknowledgments

This research was financially supported by the National Nature Science Foundation of China (Contract grant number: 20574051), and the Specialized Research Fund for the Doctoral Program of Higher Education (Contract grant number: 20050058001).

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Jinyan Wang
    • 1
  • Li Chen
    • 1
  • Yiping Zhao
    • 1
  • Gang Guo
    • 2
  • Rui Zhang
    • 2
  1. 1.Tianjin Key Laboratory of Fiber Modification and Functional Fiber, School of Materials Science and Chemical EngineeringTianjin Polytechnic UniversityTianjinChina
  2. 2.Institute of EndocrinologyTianjin Medical UniversityTianjinChina

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