Multifunctional nanocoatings with synergistic controlled release of zinc ions and cytokines for precise modulation of vascular intimal reconstruction

• Published in: Nanomedicine Vol. 57; p. 102739
• Main Authors: Tan, Jianying, Wang, Huanran, Liu, Sainan, Li, Li, Liu, Hengquan, Liu, Tao, Chen, Junying
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.04.2024
• Subjects: Anti-hyperplasia; Endothelialization; Vascular stent; VEGF; Zn2; Endothelialization; Anti-hyperplasia; VEGF; Vascular stent; Zn2; Zn(2+)
• ISSN: 1549-9634; 1549-9642
• DOI: 10.1016/j.nano.2024.102739

Vascular stent implantation remains the major therapeutic method for cardiovascular diseases currently. We here introduced crucial biological functional biological function factors (SDF-1α, VEGF) and vital metal ions (Zn2+) into the stent surface to explore their synergistic effect in the microenvironment. The combination of the different factors is known to effectively regulate cellular inflammatory response and selectively regulate cell biological behavior. Meanwhile, in the implemented method, VEGF and Zn2+ were loaded into heparin and poly-l-lysine (Hep-PLL) nanoparticles, ensuring a controlled release of functional molecules with a multi-factor synergistic effect and excellent biological functions in vitro and in vivo. Notably, after 150 days of implantation of the modified stent in rabbits, a thin and smooth new intima was obtained. This study offers a new idea for constructing a modified surface microenvironment and promoting tissue repair. Many functional factors that promote the biological behavior of ECs have been widely used in stent surface modification. To explore the synergistic effect of biological factors and metal ions on the function of microenvironment. This article will introduce important biological function factors (SDF-1α, VEGF) and important metal ions (Zn2+) into the surface. Studies have shown that the combination of the different factors can not only effectively regulate cellular inflammatory response, but also selectively regulate cell biological behavior. Meanwhile, NPV-Zn had excellent biological functions in vitro and in vivo. [Display omitted]