NON PSYCHOACTIVE CANNABINOIDS WITH THERAPEUTIC POTENTIAL

具有治疗潜力的非精神活性大麻素

• 批准号: 6378830
• 负责人: SUMNER HOWARD BURSTEIN
• 金额: $ 24.58万
• 依托单位: UNIV OF MASSACHUSETTS MED SCH WORCESTER
• 依托单位国家: 美国
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-08-11 至 2003-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6378830
• 关键词: RNase protection assay; analgesics; antiinflammatory agents; binding sites; cannabinoid receptor; cannabinoids; chemical structure function; drug screening /evaluation; human tissue; laboratory mouse; laboratory rat; pharmacokinetics; pharmacology; receptor binding; tissue /cell culture

The broad goal of this application is to establish that the THC acids represent a distinct class of cannabinoids which have been reported not to bind to either of the known cannabinoid receptors. Although showing no psychotropic activity, they display certain of the pharmacological activities associated with the use of marijuana. The acids occur naturally as metabolites of THC and, as such, can be detected readily in the tissues of marijuana users. The properties of the acids, shown in experimental models, suggest that they may be of interest as candidates for medicinal agents. These include actions as analgesics and antiinflammatory drugs with a low potential for abuse and a minimum of toxic side effects. In this proposal, two approaches will be used to answer the question of whether or not the acid metabolites of THC have a role in the actions of the parent compound. First, attempts will be made to discover high affinity, saturable binding sties for the cannabinoid acids using high specific activity, radiolabelled acid derivatives. Structure-activity binding protocols to be included will be aimed at showing stereospecificity and rank orders that resemble the potencies of the acids in the various systems. Second, possible mechanisms for the antiinflammatory effects of the acids will be investigated and compared with the primary cannabinoids to look for differences as well as similarities. Experiments will be done to determine their effects on cytokines, eicosanoids and metalloproteinases in human cell culture systems. Where feasible, in vivo correlates will be examined to show relevance for all of the above studies. The findings that will be generated from this proposal might provide a possible solution to the current controversy over the medical use of marijuana. This would be accomplished by the discovery of synthetic analogs of THC, the active principal of marijuana, that would provide the medicinal benefits of Cannabis without the accompanying mood altering effects and abuse potential.

这项申请的广泛目标是确定THC酸代表一种不同类别的大麻素，据报道，这些大麻素不与任何已知的大麻素受体结合。虽然它们没有精神活性，但它们显示了与使用大麻有关的某些药理活性。这些酸是作为THC的代谢物自然产生的，因此，在大麻使用者的组织中很容易检测到。实验模型中显示的酸的性质表明，它们可能是药剂的候选药物。这些药物包括作为镇痛剂和抗炎药的作用，滥用的可能性低，毒副作用最小。在这项提案中，将使用两种方法来回答THC的酸性代谢物是否在母体化合物的作用中发挥作用的问题。首先，将尝试使用高比活性的放射性标记酸衍生物来发现高亲和力、可饱和的大麻酸结合带。将包括的结构-活性结合协议的目的是显示立体专一性和类似于各种体系中酸的势能的排列顺序。其次，将调查这些酸的抗炎作用的可能机制，并与主要的大麻素类进行比较，以寻找不同之处和相似之处。将进行实验，以确定它们对人类细胞培养系统中的细胞因子、二十烷类化合物和金属蛋白酶的影响。在可行的情况下，将检查体内的相关性，以显示与上述所有研究的相关性。这项提案将产生的结果可能会为目前关于医用大麻的争议提供一个可能的解决方案。这将通过发现大麻的有效成分THC的合成类似物来实现，它将提供大麻的药用价值，而不会伴随着情绪改变的影响和滥用的可能性。