A pre-conditioning protocol of peripheral blood derived endothelial colony forming cells for endothelialization of tissue engineered constructs.

Microvascular Research
Xenia KrausCornelia Blume

Abstract

In regenerative medicine, autologous endothelial colony forming cells (ECFCs) bear the greatest potential to be used for surface endothelialization of tissue engineered constructs, as they are easily attainable and possess a high proliferation rate. The aim of this study was to develop a standardized pre-conditioning protocol under dynamic conditions simulating the physiology of human circulation to improve the formation of a flow resistant monolayer of ECFCs and to enhance the antithrombogenicity of the endothelial cells. The main focus of the study was to consequently compare the cellular behavior under a steady laminar flow against a pulsatile flow. Mononuclear cells were isolated out of peripheral blood (PB) buffy coats and plated on uncoated tissue culture flasks in anticipation of guidelines for Advanced Therapy Medicinal Products. ECFCs were identified by typical surface markers such as CD31, CD146 and VE-Cadherin. To explore the effects of dynamic cultivation, ECFCs and human umbilical vein endothelial cells were comparatively cultured under either laminar or pulsatile (1 Hz) flow conditions with different grades of shear stress (5 dyn/cm2versus 20 dyn/cm2). High shear stress of 20 dyn/cm2 led to a significant upregulat...Continue Reading

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Citations

Jan 6, 2021·Tissue Engineering. Part a·Sebastian HeeneCornelia A Blume

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