Soft chemical methods integration in developing new scaffolds for tissue engineering

Roxana M. Piticescu 1Tinca Buruiana 2Nicoleta Plesu 3Eugeniu Vasile 4Bogdan Firtat 5Cristina F. Rusti 1

1. National Institute for Nonferrous and Rare Metals (IMNR), 102 Biruintei Blvd., Pantelimon 077145, Romania
2. Petru Poni Institute of Macromolecular Chemistry of the Romanian Academy, Aleea Grigore Ghica Voda 41A, Iasi, Romania
3. Institute of Chemistry Timisoara of Romanian Academy, Bdul Mihai Viteazul 24, Timisoara 300223, Romania
4. METAV-CD SA, CA Rosetti Nr 31 Sect. 2, Bucharest 70000, Romania
5. National Institute for Research and development in Microtechnologies (IMT-Buchares), P.O.Box 38-160, Bucharest 023573, Romania

Abstract

The aim of the work is to develop new scaffolds for tissue engineering. This supposes to integrate soft chemical methods (hydrothermal and electrochemical methods) for preparing multifunctional biomaterials based on hydroxyl-apatite and functionalized polyurethanes. The innovative part is represented by the following aspects:

- synthesis, in situ under hydrothermal synthesis at low temperatures and high pressures, of new nanostructured hybrid materials with a strong chemical/physical bonding between the components;

-  applying the cyclic voltametry to monitor the electrical response of the nanostructured hybrid thin films deposited by spin-coating on gold-plated silicon wafers used as substrate. Electrochemical measurements were used to monitor cell adhesion, and experiments were designed to determine how various changes in substrates influence the cell adhesion and proliferation. To accomplish these studies, cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) were performed. As the cell number increases, the covered surface of electrode with cells will increase and the electrode impedance will change. Depending on the structural and compositional factors of the nanostructured hybrid thin films, the electrical response could be useful in monitoring by electrical simulation of the cell response. The processes at the substrate/hybrid interface have been studied by SEM and HRTEM methods. Biocompatibility studies by in-vitro tests of different immobilized biomolecules are under working.

Acknowledgements: The researches are financially supported by National Authority for Scientific Research in the frame of project 71-004/2007.

References:

  1. D.G. Castner, B.D. Ratner, Surface Science, 500 (2002), pp. 28-60
  2. G. Kickelbick, Hybrid Materials: Synthesis, Characterization, and Applications, ISBN-13: 978-3-527-31299-3 - Wiley-VCH, Weinheim, 2006
  3. M. Wang, Biomaterials 24 (2003), pp. 2133–2151
  4. G.K. Knopf, A. S. Bassi, “Smart Biosensor Technology”, CRC Press, 2007
 

Related papers
  1. New inorganic-organic hybrid materials with strong chemical bonding
  2. High pressure-low temperature synthesis of new nanostructured compounds  
  3. Charaterization of Co-Cu thin films obtained by vapor deposition
  4. Mapping dopants effects in the High pressure synthesis of nanostructured zinc oxide
  5. High pressure-low temperature synthesis of new nanostructured compounds
  6. Soft solution processes: application to hybrid nanostructured materials
  7. Hydrothermal synthesis of doped oxide nanomaterials: a review
  8. Hydrothermal synhtesis of inorganic/organic hybrid nanomaterials
  9. New routes for the synthesis of Al-doped ZnO transparent nanomaterials
  10. Synthesis of Al-doped ZnO nanomaterials with controlled luminescence properties
  11. Hydrothermal synthesis of nanomaterials: bringing materials closer to life
  12. Biocompatibility of thin films based on hydrothermal synthesized HAp
  13. Hybrid HAp- maleic anhydride copolymer nanocomposites obtained by in situ functionalisation
  14. New hydroxyapatite based nanomaterials for potential use in medical fields

Presentation: Oral at E-MRS Fall Meeting 2008, Symposium L, by Roxana M. Piticescu
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-20 21:22
Revised:   2009-06-07 00:48