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Stent coated with antibody against vascular endothelial-cadherin captures endothelial progenitor cells, accelerates re-endothelialization and reduces neointimal formation : VE-카드헤린 항체가 코팅된 스텐트는 내피전구세포를 포획하고 재내피화를 촉진하며 신생내막 증식을 억제한다

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Authors
임우현
Advisor
김효수
Major
융합과학기술대학원 분자의학 및 바이오제약학과
Issue Date
2014-08
Publisher
서울대학교 대학원
Keywords
VE-cadherinstentendothelial progenitor cellrestenosisre-endothelialization
Description
학위논문 (석사)-- 서울대학교 융합과학기술대학원 : 분자의학 및 바이오제약학과, 2014. 8. 김효수.
Abstract
Background: In contrast to CD34, vascular endothelial-cadherin (VE-cadherin) is exclusively expressed on the late endothelial progenitor cells (EPC) whereas not on the early or myeloid EPC. Thus, VE-cadherin could be an ideal target surface molecule to capture circulating late EPC. In the present study, we evaluated whether anti-VE-cadherin antibody-coated stents (VE-cad stents) might accelerate endothelial recovery and reduce neointimal formation through the ability of capturing EPC.
Methods and Results: The stainless steel stents were coated with rabbit polyclonal anti-human VE-cadherin antibodies and exposed to EPC for 30 minutes in vitro. The number of EPC which adhered to the surface of VE-cad stents was significantly higher than bare metal stents (BMS) in vitro, which was obliterated by pretreatment of VE-cad stent with soluble VE-cadherin proteins. We deployed VE-cad stents and BMS in the rabbit right and left iliac arteries, respectively. At 48 hours after stent deployment in vivo, CD-31-positive endothelial cells adhered to VE-cad stent significantly more than to BMS. At 3 days, scanning electron microscopy showed that over 90% surface of VE-cad stents was covered with endothelial cells, which was significantly different from BMS. At 42 days, neointimal area that was filled with smooth muscle cells positive for actin or calponin, was significantly smaller in VE-cad stents than in BMS by histological analysis (0.95 ± 0.22 vs 1.34 ± 0.43, mm2, respectively, p=0.02). Immuno-histochemical analysis revealed that infiltration of inflammatory cells was not significantly different between two stents.
Conclusion: VE-cad stents captured EPC successfully in vitro, accelerated endothelial recovery on stent, and eventually reduced neointimal formation in vivo.
Language
English
URI
https://hdl.handle.net/10371/133358
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Graduate School of Convergence Science and Technology (융합과학기술대학원)Dept. of Molecular and Biopharmaceutical Sciences (분자의학 및 바이오제약학과)Theses (Master's Degree_분자의학 및 바이오제약학과)
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