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- Olausson, Michael, 1956, et al.
(författare)
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In vivo application of tissue-engineered veins using autologous peripheral whole blood: A proof of concept study
- 2014
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Ingår i: EBioMedicine. - : Elsevier BV. - 2352-3964. ; 1:1, s. 72-79
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Tidskriftsartikel (refereegranskat)abstract
- Vascular diseases are increasing health problems affecting >25 million individuals in westernized societies. Such patients could benefit fromtransplantation of tissue-engineered vascular grafts using autologous cells. One challenge that has limited this development is the need for cell isolation, and risks associated with ex vivo expanded stem cells. Herewe demonstrate a novel approach to generate transplantable vascular grafts using decellularized allogeneic vascular scaffolds, repopulatedwith peripheralwhole blood (PWB) in vitro in a bioreactor. Circulating, VEGFR-2+/CD45+ and a smaller fraction of VEGFR-2+/CD14+ cells contributed to repopulation of the graft. SEMmicrographs showed flat cells on the luminal surface of the grafts consistentwith endothelial cells. For clinical validation, two autologous PWBtissue-engineered vein conduits were prepared and successfully used for bypass procedures in two pediatric patients. These results provide a proof of principle for the generation of transplantable vascular grafts using a simple autologous blood sample, making it clinically feasible globally.
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