201. PLLA Composites Combined with Delivery System of Bioactive Agents for Anti-Inflammation and Re-Endothelialization.
- Author
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Baek, Seung-Woon, Kim, Da-Seul, Song, Duck Hyun, Lee, Semi, Lee, Jun-Kyu, Park, So-Yeon, Kim, Jun Hyuk, Kim, Tae-Hyung, Park, Chun Gwon, and Han, Dong Keun
- Subjects
MAGNESIUM hydroxide ,TISSUE scaffolds ,EXTRACELLULAR vesicles ,CARDIOVASCULAR diseases ,NITRIC oxide - Abstract
The development of a biodegradable vascular scaffold (BVS) for the treatment of cardiovascular diseases (CVDs) still requires some improvement. Among them, re-endothelialization and anti-inflammation are clinically important to restore vascular function. In this study, we proposed a coating system to deliver hydrophilic bioactive agents to BVS using nanoemulsion and drop-casting methods. The poly(L-lactide) (PLLA) scaffold containing magnesium hydroxide (MH) was coated on the surface with bioactive molecules such as polydeoxyribonucleotide (PDRN), L-arginine (Arg, R), and mesenchymal stem cell-derived extracellular vesicles (EVs). PDRN upregulates the expression of VEGF as one of the A2A receptor agonists; and Arg, synthesized into nitric oxide by intracellular eNOS, induces endothelialization. In particular, EVs, which are composed of a lipid bilayer and transfer bioactive materials such as protein and nucleic acid, regulate homeostasis in blood vessels. Such a bioactive agent coating system and its PLLA composite suggest a new platform for the treatment of cardiovascular dysfunction. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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