Thiol-modified chitosan sulfate nanoparticles for protection and release of basic fibroblast growth factor

Yi Cheng Ho, Shao Jung Wu, Fwu Long Mi, Ya Lin Chiu, Shu Huei Yu, Nilendu Panda, Hsing Wen Sung

研究成果: 雜誌貢獻文章同行評審

39 引文 斯高帕斯(Scopus)


A series of chitosan (CS) derivatives, the 6-O-carboxymethylchitosan (6-O-CC), 2-N sulfated 6-O-carboxymethylchitosan (N-SOCC) and the 2-N and 3,6-O sulfated 6-O-carboxymethyl chitosan (N,O-SOCC) were synthesized in this study. The chemical structures and the degrees of substituted carboxymethyl and sulfate groups of the synthesized compounds were respectively determined by FT-IR spectra and elemental analysis. N,O-SOCC displayed the highest protective efficiency for basic fibroblast growth factor (bFGF) as examined by the L929 fibroblast culture test and docking simulation. N,O-SOCC-4-thio-butylamidine (TBA) conjugates prepared by modification of N,O-SOCC with 2-iminothiolane were in situ cross-linkable. The degrees of thiol substitution of the 2-iminothiolane modified N,O-SOCC polymers were determined to be in the ranges of 45.9 ± 3.7 and 415.6 ± 12.5 μmol SH/g SOCC by quantifying the amount of thiol groups on the thiolated polymers with Ellman's reagent. The 2-iminothiolane modified N,O-SOCC and CS complex could be used for preparing nanoparticles by a polyelectrolyte self-assembly method, and the release of bFGF from the nanoparticles was successfully controlled. L929 fibroblast culture tests showed that the thiol modified N,O-SOCC/CS nanoparticles could effectively protect bFGF from inactivation over a 120 h period. The results of this study suggest that the thiol modified N,O-SOCC/CS nanoparticles may be useful as novel materials for specific delivery of bFGF with mitogenic activity.

頁(從 - 到)28-38
期刊Bioconjugate Chemistry
出版狀態已發佈 - 1月 20 2010

ASJC Scopus subject areas

  • 生物技術
  • 生物工程
  • 有機化學
  • 藥學科學
  • 生物醫學工程
  • 藥理


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