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Updated: Jun 8, 2025
Implantation of Electrospun Vascular Grafts with Optimized Structure in a Rat Model
Published on: June 27, 2018
Human acellular amniotic membrane/polycaprolactone vascular grafts prepared by electrospinning enable vascular
Jiayi Wu1, Yixin Chen2, Xiaoxi Liu2
1Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Pathology, Peking University Cancer Hospital and Institute, Beijing, China.
Background:
Vascular transplantation is an effective treatment for severe vascular lesions. The design of the bioactive and mechanical properties of small-caliber vascular grafts is critical for their application in tissue engineering. In this study, we sought to develope a small-caliber vascular graft by electrospinning a mixture of a human acellular amniotic membrane (HAAM) and polycaprolactone (PCL).
Results:
Mechanical tests showed that the vascular grafts were strong enough to endure stress from adjacent blood vessels and blood pressure. The biocompatibility of the HAAM/PCL vascular grafts was evaluated based on cell proliferation in vitro. The tubular formation test demonstrated that vascular grafts containing HAAM could improve human umbilical vein endothelial cell function, and in vivo implantation was performed by replacing the rat abdominal aorta. The HAAM/PCL vascular graft was found to promote attachment and endothelial cell retention. The regenerated smooth muscle layer was similar to native arteries' smooth muscle layer and the endothelium coverage was complete.
Conclusions:
These results suggest that our constructs may be promising vascular graft candidates and can potentially be used to develop vascular grafts that can endothelialize rapidly in vivo.
