Related Experiment Video
Updated: Dec 26, 2025
Wet Chemistry and Peptide Immobilization on Polytetrafluoroethylene for Improved Cell-adhesion
Published on: August 15, 2016
Functionalization of PTFE Materials Using a Combination of Polydopamine and Platelet-Rich Fibrin
Isabelle Talon1, Anne Schneider1, Vincent Ball2
1Institut National de la Santé et de la Recherche Médicale, UMR_S 1121, Strasbourg, France; Hôpitaux Universitaires de Strasbourg, Service de Chirurgie Pédiatrique, Strasbourg, France.
Background:
The diaphragm, which forms a physical barrier between the thoracic and the abdominal cavities, is also the major part of the respiratory system. Congenital diaphragmatic hernia (CDH) is a malformation of that partition muscle. Expanded polytetrafluoroethylene (e-PTFE), a synthetic nondegradable biomaterial, is currently used for the repair of diaphragm defects. Indeed, this hydrophobic biomaterial does not promote rapid and dense cell colonization. Surface modifications are needed to favor or even guide cellular responses.
Materials And Methods:
In this context, we present here a practical and effective way of functionalization of the e-PTFE material. We investigated, by using electron microscopy, the coating with PRF (Platelet-Rich Fibrin) of PDA (Polydopamine) treated e-PTFE implant material.
Results:
We demonstrate that this straightforward chemical functionalization with PDA increases the hydrophilicity of e-PTFE and thus improves tissue integration. Then, we demonstrated that whatever the contact time between PRF and e-PTFE and the centrifugation speed, the PDA coating on the e-PTFE biomaterial promotes further biological events like cell adhesion and spreading.
Conclusions:
Our findings clearly show that this composite coating (chemically by using PDA + biologically by using PRF) method of e-PTFE is a simple, interesting and promising way to favor tissular integration of such biomaterials.
