Evaluation of L929 fibroblast attachment and proliferation on Arg-Gly-Asp-Ser (RGDS)-Immobilized chitosan in serum-containing/serum-free cultures


Karakecili A. G. , Demirtas T. T. , Satriano C., Guemuesderelioglu M. , Marletta G.

JOURNAL OF BIOSCIENCE AND BIOENGINEERING, cilt.104, ss.69-77, 2007 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 104 Konu: 1
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1263/jbb.104.69
  • Dergi Adı: JOURNAL OF BIOSCIENCE AND BIOENGINEERING
  • Sayfa Sayıları: ss.69-77

Özet

In this study, chitosan membranes prepared by the solvent casting method were modified with the Arg-Gly-Asp-Ser (RGDS) sequence of fibronectin using the photochemical immobilization technique. The results obtained from attenuated total reflection-Fourier transform infrared spectra and X-ray photoelectron spectroscopy studies confirmed the successful immobilization of RGDS on chitosan membranes. The immobilized peptide concentration was determined by ninhydrin analysis on the order of 10(-7) mol/cm(2). In vitro cell culture studies were performed with L929 mouse fibroblasts to investigate the effect of biomodification on fibroblast cell behaviour in serum-free and 10% serum-containing media. The results obtained from cell culture studies pointed out the specific interactions between biosignal RGDS molecules and fibroblast cells. A triggered cell attachment and proliferation were observed on RGDS-modified chitosan membranes that were more distinguishable in serum-free medium. In addition, the photochemical immobilization technique was realized in the presence of a photomask that was used to immobilize the RGDS molecules in a defined micropattern. L929 mouse fibroblasts attached on the RGDS-micropatterned areas indicating integrin-mediated interactions.