Project 1

项目1

• 批准号: 7612915
• 负责人: ARON H LICHTMAN
• 金额: $ 32.66万
• 依托单位: VIRGINIA COMMONWEALTH UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-05-15 至 2013-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7612915
• 关键词: 2-arachidonylglycerol; Address; Affect; Affinity; Allosteric Site; Anti-Inflammatory Agents; Anti-inflammatory; Behavior; Behavioral; Binding; Brain; Brain region; CNR2 gene; Cannabinoids; Chemicals; Chronic; Classification; Complement; Complex; Dependence; Drug Addiction; Endocannabinoids; Enzyme Inhibitor Drugs; Enzyme Inhibitors; Enzymes; Evaluation; Feeding behaviors; Food; Genetic; Genetically Modified Animals; Goals; In Vitro; Individual; Inflammation; Japan; Knockout Mice; Libraries; Ligands; Lipids; Marijuana; Mediator of activation protein; Metabolic; Metabolic Pathway; Metabolism; Methods; Modeling; Mus; Pain; Perception; Phenotype; Physiological; Play; Regulation; Rewards; Role; Sampling; Series; Serine Hydrolase; Site; Source; System; Testing; Therapeutic; Time; Tissues; Transgenic Mice; Traumatic Brain Injury; Uncertainty; Vas deferens structure; anandamide; base; cannabinoid receptor; chemokine; cytokine; drug discrimination; drug of abuse; endogenous cannabinoid system; hedonic; in vivo; inflammatory neuropathic pain; inhibitor/antagonist; interest; lipid mediator; professor; protein profiling; receptor; receptor binding; reinforcer; relating to nervous system; synthetic enzyme

The goal of this project is to address several unresolved questions regarding the role of the endocannabinoid system in pain, reward and drug dependence. There is strong evidence that the two major endocannabinoids, anandamide (AEA) and 2-arachidonoylglycerol (2-AG) exert considerable influence in these pathological states, yet it is highly unlikely that they are simply playing redundant roles. Therefore, one of the objectives of this project is to delineate their roles in these pathological conditions. The fact that the synthetic and metabolic pathways for endocannabinoids are not completely understood creates a challenge in systematically manipulating their levels under in vivo conditions. Therefore, a major goal is to develop potent and selective enzyme inhibitors that can be used to manipulate endocannabinoids in vivo. Synthetic and metabolic enzyme inhibitors for AEA and 2-AG will be prepared by Dr. Razdan (Project 2). Those identified by Dr. Cravatt (Project 3) as enzyme selective will be evaluated by us in behavioral battery of tests for cannabinoid activity. The second approach is to establish the phenotypes of mice deficient in endocannabinoid synthetic and metabolic enzymes generated by Dr. Cravatt. At the same time, we are well aware that several classes of lipids structurally related to AEA and 2-AG impact the endocannabinoid system by influencing synthetic and metabolic pathways, acting directly on cannabinoid receptors, or acting at the newly discovered allosteric site on the CBi receptor site. To address these questions, we will conduct in vitro and in vivo evaluation of synthetic allosteric ligands for CBi receptors [prepared by Drs. Razdan and Mechoulam (Project 4)], and putative endocannabinoids provided by Dr. Mechoulam. To complement Dr. Mechoulam's efforts to identify new endocannabinoids, we will establish lipid profiles in selected brain regions of mice under different experimental conditions in an effort to identify lipids that may be endocannabinoids or relevant lipid mediators. We will use existing as well as these new discoveries to further explore the involvement of the endocannabinoid system in pain, reward and dependence. Emphasis will be placed on inflammatory and neuropathic pain models. We will determine the extent to which cytokines and chemokines are involved in endocannabinoid anti-inflammatory effects. The receptor mechanisms of action and underlying neural substrates will be investigated using genetic and pharmacological approaches. The same comprehensive approach will be employed in drug discrimination and feeding behavior, to establish THC-like profiles of agents that manipulate the endocannabinoid system and to establish phenotypic behavior of genetically modified mice. Collectively, these studies will identify endogenous substances that may act either directly or indirectly on the endogenous cannabinoid system, and elucidate the role that AEA and 2-AG play in pain, reward, and drug dependence.

该项目的目标是解决有关内源性大麻素作用的几个未解决的问题 系统在疼痛、奖赏和药物依赖中的作用。有充分证据表明，两大 内源性大麻素，大麻素（AEA）和2-花生四烯酰甘油（2-AG）发挥相当大的影响， 这些病理状态，但它是极不可能的，他们只是扮演多余的角色。因此，一 这个项目的目标之一是描述他们在这些病理条件下的作用。的事实 内源性大麻素的合成和代谢途径尚未完全了解， 在体内条件下系统地操纵它们的水平。因此，一个主要目标是发展 有效的和选择性的酶抑制剂，可用于在体内操纵内源性大麻素。合成 AEA和2-AG的代谢酶抑制剂将由Razdan博士制备（项目2）。那些 由Cravatt博士（项目3）确定为酶选择性的，将由我们在行为测试组合中进行评估 大麻素的活性第二种方法是建立小鼠的表型， 内源性大麻素合成和代谢酶产生的克拉瓦特博士。与此同时， 意识到结构上与AEA和2-AG相关的几类脂质影响内源性大麻素系统 通过影响合成和代谢途径，直接作用于大麻素受体，或作用于 CBi受体位点上新发现的变构位点。为了解决这些问题，我们将在体外进行 和CB1受体的合成变构配体的体内评价[由Razdan和 Mechoulam（项目4）]和Mechoulam博士提供的推定内源性大麻素。补充博士。 Mechoulam的努力，以确定新的内源性大麻素，我们将建立脂质分布在选定的大脑 在不同的实验条件下，小鼠的区域，以确定脂质， 内源性大麻素或相关脂质介质。我们将利用现有的以及这些新的发现， 进一步探索内源性大麻素系统在疼痛、奖赏和依赖中的作用。重点 将被放置在炎症和神经性疼痛模型上。我们将确定细胞因子在多大程度上 和趋化因子参与内源性大麻素抗炎作用。受体机制 将使用遗传学和药理学方法研究其作用和潜在的神经基质。 同样的综合方法将用于药物辨别和喂养行为， 建立操纵内源性大麻素系统的药物的THC样特征，并建立 转基因小鼠的表型行为。总的来说，这些研究将确定内源性 可能直接或间接作用于内源性大麻素系统的物质，并阐明 AEA和2-AG在疼痛、奖赏和药物依赖中的作用。