ENDOXY - Development of a Biomimetic Oxygenator-Test-Device

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Medical Device Development

Background:

• Current oxygenators face limitations in biocompatibility, restricting mid- to long-term therapeutic applications.
• Tissue engineering strategies, utilizing autologous cells, offer a solution to overcome biomaterial immunogenicity.
• Endothelial cell coating on membranes may enhance hemocompatibility and mitigate adverse immune responses.

Purpose of the Study:

• To develop a biomimetic oxygenator test device (ENDOXY) by endothelializing a gas-permeable membrane.
• To evaluate cell retention under shear stress and assess gas transfer capabilities of the endothelialized membrane.
• To create a test system for assessing endothelialized membranes for improved oxygenator function.

Main Methods:

• Development of ENDOXY, a multifunctional test system.
• Endothelialization of a gas-permeable membrane suitable for cell culture.
• Testing of cell retention under shear stress and measurement of gas transfer.

Main Results:

• Successful endothelialization of the membrane was achieved, with cells exhibiting characteristic morphologies and positive staining for endothelial markers.
• High cell retention was observed under shear stress, particularly after blood perfusion experiments.
• Gas transfer was successfully measured across both uncoated and endothelialized membranes.

Conclusions:

• The ENDOXY system demonstrates promising results in design, endothelialization, and cell retention under shear stress.
• Further research is encouraged to explore various membrane materials for optimized biomimetic surfaces.
• This work paves the way for developing fully hemocompatible oxygenators for extended therapeutic use.