Improved Manufacturing Processes for Advanced Imaging Ag

改进先进成像银的制造工艺

• 批准号: 7051774
• 负责人: ROBERT D BOLSKAR
• 金额: $ 10万
• 依托单位: TDA RESEARCH, INC.
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-20 至 2007-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7051774
• 关键词: bioimaging /biomedical imaging; carbon; chemical synthesis; contrast media; gadolinium; magnetic resonance imaging; molecular shape; technology /technique development

DESCRIPTION (provided by applicant): Endohedral metallofullerenes are spherical fullerene carbon cages confining one or more metal atoms in their interior spaces. Biomedical applications exploiting special properties of metallofullerenes in different areas are promising, including diagnostic and imaging agents (magnetic resonance imaging (MRI) contrast agents, X-ray contrast agents, radiotracers), therapeutic nuclear medicine, antioxidants and biosensors. In our development of Gd-containing endohedral metallofullerenes as paramagentic MRI contrast agents, we have recognized the need for expanding the available raw materials beyond just the soluble Gd@C82 metallofullerenes, which comprise only about 4% of the sublimable Gd metallofullerenes produced by the carbon arc process. We propose to combine new advances in the areas of metallofullerene production and post-production processing to both increase the yield of generated metallofullerenes and to separate and purify the large majority of Gd endohedrals that the current processes can not access. Separative processing based on a chemical redox strategy will allow us to utilize all of the available Gd metallofullerenes by differentiating them into different classes based on their physical and chemical properties. Careful analytical evaluation of the obtained Gd metallofullerene fractions will be performed, allowing evaluation and comparison to other processes for the first time. These advances will benefit the development of MRI contrast applications with metallofullerenes by creating means to generate more raw material while separating the mixture of produced metallofullerenes into useful, homogeneous fractions. In summary, this project will improve processes for manufacture and purification of new materials that are the main ingredient in a new type of useful drug. These can help improve MRI scans used for detecting diseases and are also potentially useful for other medical treatments and applications.

描述（由申请人提供）：内嵌金属富勒烯是球形富勒烯碳笼，在其内部空间中限制一个或多个金属原子。利用金属富勒烯在不同领域的特殊性质的生物医学应用是有希望的，包括诊断和成像剂（磁共振成像（MRI）造影剂、X射线造影剂、放射性示踪剂）、治疗性核医学、抗氧化剂和生物传感器。在我们开发含Gd的内嵌金属富勒烯作为顺磁性MRI造影剂的过程中，我们已经认识到需要将可用的原材料扩展到可溶性Gd@C82金属富勒烯之外，可溶性Gd@C82金属富勒烯仅占通过碳弧工艺生产的可升华Gd金属富勒烯的约4%。我们建议联合收割机在金属富勒烯生产和生产后处理领域的新进展，以增加所产生的金属富勒烯的产率，并分离和纯化目前工艺无法获得的大部分Gd内体。基于化学氧化还原策略的分离处理将使我们能够利用所有可用的Gd金属富勒烯，根据它们的物理和化学性质将它们区分为不同的类别。将对获得的Gd金属富勒烯馏分进行仔细的分析评估，首次允许与其他工艺进行评估和比较。这些进展将有利于MRI造影剂应用的发展与金属富勒烯通过创造手段，以产生更多的原料，同时分离所产生的金属富勒烯的混合物成有用的，均匀的馏分。总之，该项目将改进作为新型有用药物主要成分的新材料的制造和纯化工艺。这些可以帮助改善用于检测疾病的MRI扫描，并且对于其他医学治疗和应用也有潜在的用处。