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Heparin/poly-l-lysine nanoplatform with growth factor delivery for surface modification of cardiovascular stents: The influence of vascular endothelial growth factor loading.
Tan, Jianying; Cui, Yuanyuan; Zeng, Zheng; Wei, Lai; Li, Li; Wang, Huanran; Hu, Huiyi; Liu, Tao; Huang, Nan; Chen, Junying; Weng, Yajun.
Afiliación
  • Tan J; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Cui Y; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Zeng Z; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Wei L; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Li L; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Wang H; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Hu H; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Liu T; Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China.
  • Huang N; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Chen J; Key Laboratory of Advanced Technology of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu, China.
  • Weng Y; School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China.
J Biomed Mater Res A ; 108(6): 1295-1304, 2020 06.
Article en En | MEDLINE | ID: mdl-32064767
The rapid re-endothelialization of the vascular stent surface is desirable for preventing thrombosis or reducing restenosis. Many biological factors that promote the biological behavior of endothelial cells have been used for the surface modification of stents. Vascular endothelial growth factor (VEGF), which plays an important role in angiogenesis, induces strong vascular growth. In this study, we investigated different VEGF concentrations (50 to 500 ng/ml) to determine the optimum concentration for biocompatibility. First, VEGF-loaded heparin/poly-l-lysine (Hep-PLL) nanoparticles were created by electrostatic interactions. Then, the VEGF-loaded nanoparticles were immobilized on dopamine-coated 316 L stainless steel (SS) surfaces. The physical and chemical properties of the modified surface were characterized and the biocompatibility was evaluated in vitro. The results indicated that the VEGF-loaded nanoparticles were immobilized successfully on the 316LSS surface, as evidenced by the results of Alcian Blue staining and water contact angle (WCA) measurements. The low platelet adhesion and activation indicated that the modified surfaces had good blood compatibility. The modified surfaces showed a good inhibitory effect on smooth muscle cells, indicating that they inhibited tissue hyperplasia. In addition, the modified surfaces significantly promoted endothelial cell adhesion, proliferation, migration, and biological activity, especially VEGF concentration was 350 ng/ml (NPV350). The optical VEGF concentration of the surface modified Hep-PLL nanoparticles was 350 ng/ml. The proposed method shows promise for potential applications for cardiovascular devices.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polilisina / Heparina / Materiales Biocompatibles Revestidos / Factor A de Crecimiento Endotelial Vascular / Stents Liberadores de Fármacos / Anticoagulantes Límite: Humans Idioma: En Revista: J Biomed Mater Res A Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polilisina / Heparina / Materiales Biocompatibles Revestidos / Factor A de Crecimiento Endotelial Vascular / Stents Liberadores de Fármacos / Anticoagulantes Límite: Humans Idioma: En Revista: J Biomed Mater Res A Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2020 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos