Porous Inorganic Framework Thin Film as Drug-Eluting Stent Coating

项目总结/摘要 本项目的主要目标是制备表面支撑型多孔无机材料， 骨架薄膜，其具有用于药物递送的上级性质。第二个目标， 有助于实现第一个，是识别和更好地了解化学品， 对药物负载和释放条件具有最大影响的结构特征。到 为了实现这些目标，PI建议修改和确定合适的水面平台 (with特定的化学特征），其可用于将选择性的含铁金属有机 框架（Fe-MOF）薄膜。这些可生物降解的Fe-MOFs由Fe（III）簇组成 和各种有机配体作为形成三维多孔结构的支柱。有机 节点也可用作与官能化金属基底交联的结合位点。药物 负载/释放与表面支持Fe-MOF薄膜将检查光谱 和显微镜方法。我们还将评估这些铁的毒性和机械耐久性- MOF涂层。这些含铁无机骨架作为药物载体的性能 将使用表面技术在体外进行研究。从这些初步研究中获得的知识 将有利于未来在体内应用这些Fe-MOF薄膜作为潜在的研究 药物洗脱支架涂层。此外，该项目旨在提高对以下问题的科学认识： 多孔杂化材料与各种治疗药物之间的表面和界面相互作用 剂.这些结果将导致新的见解，并指导未来药物的材料设计， 洗脱支架。拟议的研究活动将提供出色的健康相关研究- 为像我们这样的少数民族服务机构的学生提供教育机会，这将带来 对我们的社区产生了积极的影响。

Project Summary/Abstract The primary objective of the proposed project is to prepare surface supportive porous inorganic framework thin films that have superior properties for drug delivery. The second objective, which helps with the realization of the first one, is to identify and better understand the chemical and structural features that have the greatest impact on the drug loading and releasing conditions. To accomplish these objectives, the PI proposes to modify and identify suitable surface platforms (with specific chemical features) that can be used to attach selective iron-containing metal organic framework (Fe-MOF) thin films. These biodegradable Fe-MOFs are composed of Fe(III) clusters and various organic ligands as struts forming three-dimensional porous structures. The organic nodes can also serve as binding sites to crosslink with functionalized metal substrates. The drug loading/releasing with surface-supportive Fe-MOF thin films will be examined by spectroscopic and microscopic methods. We will also evaluate the toxicity and mechanical durability of these Fe- MOF coatings. The performance of these iron-containing inorganic frameworks as drug carriers will be studied in vitro using surface techniques. The knowledge acquired from these initial studies will be beneficial for the future in vivo studies of applying these Fe-MOF thin films as potential drug-eluting stent coatings. In addition, the project aims to enhance the scientific understanding of surface and interface interactions between porous hybrid materials and assorted therapeutic agents. These results will lead to new insights and guide the material design for future drug- eluting stents. The proposed research activities will provide excellent health-related research- education opportunities for students in a minority serving institution like ours, which will bring a significant positive impact to our community.