Controlling Cavitand Conformations for Drug Delivery Studies

控制药物输送研究中的空穴和构象

• 批准号: 7911410
• 负责人: ORION BOYD BERRYMAN
• 金额: $ 4.76万
• 依托单位: SCRIPPS RESEARCH INSTITUTE, THE
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-03-16 至 2012-03-15
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7911410
• 关键词: Acetylcholine; Address; Adverse effects; Affective; Alzheimer' s Disease; Analytical Chemistry; Binding; Brain; Calorimetry; Chemistry; Development; Disease; Drug Controls; Drug Delivery Systems; Educational workshop; Effectiveness; Electrochemistry; Ethics; Grant; International; Journals; Knowledge; Laboratories; Lead; Light; Mass Spectrum Analysis; Molecular; Molecular Biology; Molecular Conformation; Peer Review; Pharmaceutical Preparations; Pharmacotherapy; Publications; Regulation; Research; Research Training; Source; Spectrum Analysis; Stimulus; Structure; System; Therapeutic; Time; Training Programs; Writing; cavitand; controlled release; design; drug distribution; improved; public health relevance; small molecule; symposium; time interval

DESCRIPTION (provided by applicant): The general principle of this proposal is to use external stimuli (light, small molecules and electrochemistry) to release guest molecules bound inside of container molecules (cavitands). The long term objective of this proposal is to develop controlled drug delivery systems. Systems with exact regulation of drug delivery will protect reactive drugs and allow them to be administered at specific time intervals (temporal control) resulting in improved effectiveness of drug therapy. Determining which sources of external stimuli are most affective and understanding the rules that govern the release of bound guest molecules will be paramount to this study. The synthesis and design of three classes of cavitands containing functionality that executes a well-defined structural change in the presence of external stimulus is presented. NMR, UV-Vis spectroscopy, cyclic voltammetry, mass spectrometry and isothermal calorimetry will all be exploited to ascertain the structures and dynamics of these systems. The specific aims of this proposal are as follows: 1) Controlled Molecular Space - design and synthesize three classes of cavitands that are sensitive to external stimuli (light, small molecules and electrochemistry). 2) Altering Form - explore the effects that external stimuli have on cavitand conformations. 3) Controlling Function - determine which forms of external stimuli are suitable to control the release of guest molecules from cavitands. Can external stimulus be used to control the function of cavitand molecules? A strategy is proposed to regulate the catalytic function of a cavitand. The fundamental knowledge required to develop molecules capable of controlled drug release will be gained from this research. The cavitands proposed herein are excellent hosts for important bio-relevant molecules like acetylcholine. The controlled capture and release of these molecules will help us treat diseases such as Alzheimer's that are associated with acetylcholine deficiencies in the brain. The proposed research training program will include laboratory synthesis, analytical chemistry, presentations at national and international conferences (Gordon, ACS and ISMSC), courses in bio-related fields (Bioorganic Chemistry and Molecular Biology) and ethics, grant writing workshops and publication in peer reviewed journals. PUBLIC HEALTH RELEVANCE: The study of what external stimulus is best suited to release bound guest molecules and the mechanism by which it operates will lead to the development of new drug delivery systems. Precise control of guest release will allow us to address the deficiencies of current temporal control of drug delivery (when a drug is delivered over an extended period of time or at specific time intervals during treatment). Exact regulation of drug delivery will result in improved effectiveness of drug therapy by stabilizing reactive (quickly metabolized) drug molecules, increasing therapeutic activity as compared to side effects and reducing the number of drug distributions per treatment.

描述（由申请人提供）：该提案的总体原理是利用外部刺激（光、小分子和电化学）来释放结合在容器分子（空配体）内部的客体分子。该提案的长期目标是开发受控药物输送系统。精确调节药物输送的系统将保护反应性药物，并允许它们以特定的时间间隔（时间控制）给药，从而提高药物治疗的有效性。确定哪些外部刺激源最有影响力并了解控制结合客体分子释放的规则对于这项研究至关重要。提出了三类空配体的合成和设计，这些空配体包含在外部刺激存在的情况下执行明确的结构变化的功能。核磁共振、紫外-可见光谱、循环伏安法、质谱法和等温量热法都将被用来确定这些系统的结构和动力学。该提案的具体目标如下： 1）受控分子空间——设计和合成对外部刺激（光、小分子和电化学）敏感的三类空配体。 2) 改变形式 - 探索外部刺激对空穴构象的影响。 3) 控制功能-确定哪种形式的外部刺激适合控制空配体中​​客体分子的释放。外部刺激可以用来控制空配体分子的功能吗？提出了一种调节空配体催化功能的策略。从这项研究中可以获得开发能够控制药物释放的分子所需的基础知识。本文提出的空配体是乙酰胆碱等重要生物相关分子的极好宿主。这些分子的受控捕获和释放将有助于我们治疗与大脑中乙酰胆碱缺乏有关的疾病，例如阿尔茨海默病。拟议的研究培训计划将包括实验室合成、分析化学、在国内和国际会议（Gordon、ACS 和 ISMSC）上的演讲、生物相关领域（生物有机化学和分子生物学）和伦理学课程、资助写作研讨会和同行出版物审阅期刊。 公共健康相关性：对哪种外部刺激最适合释放结合的客体分子及其运作机制的研究将导致新药物输送系统的开发。对客体释放的精确控制将使我们能够解决当前药物输送时间控制的缺陷（当药物在较长一段时间内或在治疗期间以特定时间间隔输送时）。药物输送的精确调节将通过稳定反应性（快速代谢的）药物分子、增加治疗活性（与副作用相比）以及减少每次治疗的药物分布数量来提高药物治疗的有效性。