Dual-delivery of FGF-2/CTGF from Silk Fibroin/PLCL-PEO Coaxial Fibers Enhances MSC Proliferation and Fibrogenesis

Sci Rep. 2017 Aug 17;7(1):8509. doi: 10.1038/s41598-017-08226-0.

Abstract

The success of mesenchymal stem cell transplantation is highly dependent on their survival and controlled fate regulation. This study demonstrates that dual-delivery of connective tissue growth factor (CTGF) and fibroblast growth factor 2 (FGF-2) from a core-shell fiber of Silk Fibroin/poly(L-lactic acid-co-ε-caprolactone)-polyethylene oxide (SF/PLCL-PEO) enhanced fibrogenic lineage differentiation of MSCs. The core-shell structure was confirmed by transmission electron microscopy (TEM), fluorescence microscopy and attenuated total reflection (ATR) Fourier transform infrared (FTIR) spectroscopy. A sequential release of FGF-2 and CTGF was successfully achieved in this manner. FGF-2 plays an important role in stem cell proliferation and, meanwhile when accompanied with CTGF, has a slightly additive effect on fibrogenic differentiation of MSCs, whereas CTGF promotes fibrogenesis and alleviates osteogenesis, chondrogenesis and adipogenesis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Differentiation / drug effects*
  • Cell Proliferation / drug effects*
  • Cells, Cultured
  • Connective Tissue Growth Factor / pharmacokinetics*
  • Drug Carriers / chemistry
  • Drug Carriers / metabolism
  • Fibroblast Growth Factor 2 / pharmacokinetics*
  • Fibroins / chemistry
  • Fibroins / metabolism*
  • Fibroins / ultrastructure
  • Mesenchymal Stem Cells / drug effects*
  • Mesenchymal Stem Cells / physiology
  • Microscopy, Electron, Transmission
  • Microscopy, Fluorescence
  • Polyesters / chemistry
  • Polyesters / metabolism*
  • Rats
  • Spectroscopy, Fourier Transform Infrared

Substances

  • Drug Carriers
  • Polyesters
  • poly(lactic acid-co-epsilon-caprolactone)
  • Fibroblast Growth Factor 2
  • Connective Tissue Growth Factor
  • Fibroins