Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
Volume 20, Issue 9, Pages 1937-1944Publisher
SPRINGER
DOI: 10.1007/s10856-009-3744-y
Keywords
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Funding
- Great Project of Jiangsu Province department of Health, China [K200609]
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Tissue engineering holds great promise in providing vascular grafts as substitutes for damaged small-diameter blood vessels. Two of the key factors in vascular tissue engineering are biocompatible scaffolds that mimic the effects of extracellular matrix and the source of seeding cells. Synthetic poly-l-lactic acid (PLLA) nanofibers has been shown to be excellent scaffolds for tissue engineering. Outgrowth endothelial cells (OECs) isolated from human peripheral blood could also be expanded in vitro and stably maintain the differentiated phenotypes and could be used as the seeding cells for engineering autologous vascular crafts. Here we tested the possibility of combining these two together. We found that PLLA nanofibers are not only biocompatible with OECs originally isolated from rabbit peripheral blood, the aligned PLLA fibers actually promoted and guided their sustained proliferation. These results suggest that aligned PLLA could be excellent both as the scaffolds and as a promoter of cell growth during vascular tissue engineering.
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