Competitive Antagonists for General Anesthetics: A New Class of Drugs for Improving Patient Care and Advancing Scientific Research
全身麻醉药的竞争性拮抗剂:一类用于改善患者护理和推进科学研究的新型药物
基本信息
- 批准号:9889138
- 负责人:
- 金额:$ 39.01万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-04-05 至 2022-01-31
- 项目状态:已结题
- 来源:
- 关键词:AffectAffinityAnesthesia proceduresAnestheticsBarbituratesBehavioralBindingBinding SitesCaringClinicalClinical ResearchComputer AnalysisDataDrug DesignElectrophysiology (science)EtomidateGeneral anesthetic drugsGoalsHypnosisIn VitroLigandsMeasurementModelingModificationMolecularMolecular ConformationMolecular StructurePatient CarePatientsPharmacologyPhotoaffinity LabelsPlayProcessPropofolRattusReceptor ActivationRecoveryReflex actionResearchResearch PersonnelResearch Project GrantsResearch ProposalsRoleRotarod Performance TestScientific Advances and AccomplishmentsScientistShapesSiteTechniquesTestingTimeVentilatory Depressionanalogbasedesigndrug clearanceimprovedin vivonovelnovel drug classnovel strategiespatient safetyprogramsreceptorreceptor functionside effectthree-dimensional modelingtool
项目摘要
The long-term objective of this research project is to develop – for the first time – competitive
antagonists (i.e. reversal agents) for general anesthetics. This would allow clinicians to reverse anesthesia on
demand and assist scientists advance their research programs. Currently, a critical obstacle to developing
such antagonists for anesthetics that act via the GABAA receptor is that there are no strategies for designing
competitive ligands that can bind to the receptor’s anesthetic binding sites without enhancing the receptor’s
function and thus producing anesthesia. The specific goal of this research proposal is to overcome that
obstacle by discovering the fundamental principles and establishing the drug design strategies that are
necessary to develop anesthetic competitive antagonists for clinical and research use.
We have discovered that by modifying a key region of its molecular structure, the highly efficacious
anesthetic etomidate can be transformed into an anesthetic-selective competitive antagonist at the GABAA
receptor that accelerates in vivo anesthetic recovery. This discovery provides important clues regarding the
changes that occur in the GABAA receptor’s anesthetic binding sites as it isomerizes from closed to open, and
suggests a novel strategy for designing anesthetic reversal agents using existing anesthetics as molecular
templates. Aim 1 is to better understand why such modifications dramatically reduce etomidate’s binding
selectivity for the open state of the GABAA receptor, almost completely abolish its intrinsic efficacy for receptor
activation, and transform it into an anesthetic-specific competitive antagonist at the receptor. It will also test
whether analogues containing this modification antagonize the receptor actions of other anesthetics besides
propofol and etomidate. Aim 2 is to quantify the binding selectivity of these etomidate analogues for the two
different classes of anesthetic binding sites located between different receptor subunits using photoaffinity
labeling techniques. Aim 3 is to define the behavioral actions of these analogues in rats and test whether one
with very low efficacy can accelerate recovery from hypnosis produced by different anesthetics.
Currently, recovery from an anesthetic's actions must occur as a passive process whose time course
is dictated by the rate of anesthetic drug clearance rather than the actual clinical need. The availability of
general anesthetic competitive antagonists would have an enormous impact on patient care by allowing
anesthetic emergence to be actively managed and precisely controlled. It would improve patient safety and
challenge current practice models of anesthesia care by allowing potentially deadly side effects such as
respiratory depression to be reversed immediately and on-demand. It would also advance scientific
research by helping investigators to locate novel sites of anesthetic action, test for the possible existence of
endogenous ligands for anesthetic binding sites, rationally design new exogenous ligands for these sites,
and define the role that particular targets play in producing various in vitro and in vivo anesthetic actions.
这个研究项目的长期目标是首次开发具有竞争力的
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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DOUGLAS E RAINES其他文献
DOUGLAS E RAINES的其他文献
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{{ truncateString('DOUGLAS E RAINES', 18)}}的其他基金
Etomidate Analogues as Safer General Anesthetics
依托咪酯类似物作为更安全的全身麻醉药
- 批准号:
8009846 - 财政年份:2010
- 资助金额:
$ 39.01万 - 项目类别:
Etomidate Analogues as Safer General Anesthetics
依托咪酯类似物作为更安全的全身麻醉药
- 批准号:
8401548 - 财政年份:2010
- 资助金额:
$ 39.01万 - 项目类别:
Etomidate Analogues as Safer General Anesthetics
依托咪酯类似物作为更安全的全身麻醉药
- 批准号:
8206554 - 财政年份:2010
- 资助金额:
$ 39.01万 - 项目类别:
Etomidate Analogues as Safer General Anesthetics
依托咪酯类似物作为更安全的全身麻醉药
- 批准号:
7782936 - 财政年份:2010
- 资助金额:
$ 39.01万 - 项目类别:
Etomidate Analogues as Safer General Anesthetics
依托咪酯类似物作为更安全的全身麻醉药
- 批准号:
8917248 - 财政年份:2010
- 资助金额:
$ 39.01万 - 项目类别:
Preclinical Studies of Carbo-etomidate: An Etomidate Analogue for Use in Sepsis
卡博依托咪酯的临床前研究:用于治疗脓毒症的依托咪酯类似物
- 批准号:
8043610 - 财政年份:2010
- 资助金额:
$ 39.01万 - 项目类别:
Preclinical Studies of Carbo-etomidate: An Etomidate Analogue for Use in Sepsis
卡博依托咪酯的临床前研究:用于治疗脓毒症的依托咪酯类似物
- 批准号:
7872292 - 财政年份:2010
- 资助金额:
$ 39.01万 - 项目类别:
Etomidate Analogues as Safer General Anesthetics
依托咪酯类似物作为更安全的全身麻醉药
- 批准号:
8758310 - 财政年份:2010
- 资助金额:
$ 39.01万 - 项目类别:
General Anesthetics and nAcCHOR Agonist Affinity
全身麻醉药和 nAcCHOR 激动剂亲和力
- 批准号:
6636512 - 财政年份:2001
- 资助金额:
$ 39.01万 - 项目类别:
General Anesthetics and nAcCHOR Agonist Affinity
全身麻醉药和 nAcCHOR 激动剂亲和力
- 批准号:
6326889 - 财政年份:2001
- 资助金额:
$ 39.01万 - 项目类别:
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