کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6466386 1422963 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of RGD-peptide modified poly(ester-urethane) urea electrospun nanofibers as a potential application for vascular tissue engineering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Synthesis of RGD-peptide modified poly(ester-urethane) urea electrospun nanofibers as a potential application for vascular tissue engineering
چکیده انگلیسی


- A novel PEUU-RGD electrospun mats for vascular application were fabricated.
- PEUU-RGD mat was a good intima for prevent the formation of thrombi or hyperplasia.
- The fabricated mats showed excellent mechanical properties and high biocompatibility.
- Inhibition of platelet adhesion of the mats were also tuned.

The development of a biomimetic surface which is able to promote endothelialization is fundamental in the research for blood vessel substitutes to overcome the formation of thrombi or hyperplasia. In the present work, the fabrication of acrylamide-terminated glycine-arginine-glycine-aspartic peptides (Ac-GRGD) modified poly(ester-urethane) urea (PEUU) nanofibrous mats via electrospinning technique followed by covalent immobilizing method for improving its endothelialization was successfully achieved. Series of PEUU based polymers including PEUU, PEUU with t-butoxycarbonyl group (PEUU-Boc), and PEUU-amino group (PEUU-NH2) were synthesized by a two-step solution polymerization and a de-protection process. The PEUU-RGD as-prepared nanofibrous mat was characterized using different techniques, such as, scanning electron microscopy, solide-state 13C CP-MAS nuclear magnetic resonance, and stress-strain test. In addition, to motivate cell adhesion and proliferation, PEUU nanofibers mat was immobilized by coupling of Ac-GRGD. The results present that incorporation of Ac-GRGD peptide improved the mechanical properties and does not have negative effect on the morphology and the structure of PEUU nanofibers. From cell viability and cell morphology results, the prepared PEUU-RGD nanofiber mats are cytocompatible. Interestingly, the immobilized PEUU-RGD nanofibers possess lower hemolysis rate and an improved inhibition of platelet adhesion. Overall, Ac-GRGD peptides immobilized PEUU nanofibrous mats may have a potential application for vascular tissue engineering.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 315, 1 May 2017, Pages 177-190
نویسندگان
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