Novel therapeutic approach for NASH

NASH 的新治疗方法

• 批准号: 10616609
• 负责人: RANGAN MAITRA
• 金额: $ 51.8万
• 依托单位: RESEARCH TRIANGLE INSTITUTE
• 依托单位国家: 美国
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-06-04 至 2025-05-31
• 项目状态: 未结题
• 来源: https://reporter.nih.gov/project-details/10616609
• 关键词: 2-arachidonylglycerol; Adipose tissue; Adverse effects; Agonist; American; Anti-Inflammatory Agents; Antiinflammatory Effect; Appetite Stimulants; Behavior; Behavioral; Binding; Biological Assay; Biological Markers; Brain; CNR1 gene; CNR2 gene; Cannabinoids; Catalepsy; Cells; Cholesterol; Development; Diet; Disease; Disparate; Drug Kinetics; Early identification; Endocannabinoids; Evaluation; Fatty Liver; Fatty acid glycerol esters; Goals; Hepatic; Hepatocyte; Histologic; Immune; In Vitro; Indazoles; Inflammation; Lead; Ligands; Lipids; Liver; Liver diseases; Marijuana; Metabolic; Methionine; Modeling; Mus; Muscle; Neurons; Non-Insulin-Dependent Diabetes Mellitus; Obesity; Organ; PET/CT scan; Pancreas; Penetration; Peripheral; Pharmaceutical Chemistry; Pharmaceutical Preparations; Pharmacology; Property; Pyrazoles; Reporting; Research; Signal Transduction; Skeletal Muscle; Testing; Tetrahydrocannabinol; Tissues; United States; anandamide; antagonist; antinociception; beta-arrestin; cannabinoid receptor; choline deficient diet; clinical development; design; efficacy evaluation; efficacy study; efficacy testing; epidemiologic data; epidemiology study; feeding; innovation; islet amyloid polypeptide; liver injury; liver transplantation; marijuana use; marijuana user; natural hypothermia; nonalcoholic steatohepatitis; novel strategies; novel therapeutic intervention; overexpression; pharmacologic; radioligand; receptor; recruit; release of sequestered calcium ion into cytoplasm; scaffold; side effect; skeletal tissue; sugar

The overall goal of this project is to develop peripherally restricted partial agonists of the cannabinoid receptors (CB1 and CB2) for the treatment of non-alcoholic steatohepatitis (NASH). These compounds are expected to mimic the peripheral effects of THC ((−)-trans-Δ⁹-tetrahydrocannabinol), the only known orthosteric ligand of the CB receptors in marijuana while avoiding adverse CNS related side-effects. There are two known cannabinoid receptors – CB1 and CB2. The CB1 receptor is highly expressed on neurons of the CNS along with certain peripheral organs like the liver, pancreas, skeletal muscle and adipose tissue. The CB2 receptor is mostly expressed on immune cells Epidemiological studies indicate that marijuana users have reduced rates of NASH, type 2 diabetes and obesity. These contrarian effects are in sharp contrast to known orexigenic effects of marijuana via the CNS. These observations can be explained by disparate pharmacological effects of THC – a partial agonist. A partial agonist can act like a traditional agonist when excess receptors are present. However, a partial agonist can also act as a functional antagonist when number of receptors is limited by competing with a full agonist and by reducing downstream signaling. In the injured liver, the expression of CB1 is low to moderate but there is a large influx of CB2 expressing immune cells. Further, expression of the full agonist endocannabinoid 2-AG is ~1000-fold higher than that of the partial agonist AEA. We hypothesized that in NASH a partial agonist might be able to reduce fatty liver via functional antagonism of CB1 while producing anti- inflammatory effects by targeting CB2. We successfully tested this hypothesis using a well characterized partial agonist of CB receptors and an early lead compound in a model of NASH. Continuation of our preliminary studies is proposed through 3 integrated specific aims: (1) Synthesize partial CB receptor agonists that are peripherally restricted. We have started to explore a primary indazole scaffold and a secondary pyrazole scaffold to produce partial agonists of CB receptors that have limited CNS penetration. Continued refinement of early leads will lead to compounds with optimized drug-like properties. (2) Perform pharmacological characterization using various functional and binding assays and ADMET profiling of synthesized compounds to identify promising leads. Select compounds will undergo pharmacokinetic evaluation and behavioral profiling to rule out CNS-effects. (3) Perform efficacy testing in NASH models. We propose to evaluate our most promising leads in models of NASH for efficacy. In tandem, we will assess various biomarkers of efficacy and perform receptor occupancy studies to identify an optimized mature lead and two backups for further development.

该项目的总体目标是开发大麻素受体的外周限制性部分激动剂

项目成果

Discovery of 1,3-disubstituted pyrazole peripheral cannabinoid receptor partial agonists.

1,3-二取代吡唑外周大麻素受体部分激动剂的发现。

• DOI: 10.1016/j.bmcl.2023.129430
• 发表时间: 2023
• 期刊: Bioorganic & medicinal chemistry letters
• 影响因子: 2.7
• 作者: Amato,George;Runyon,Scott;Vasukuttan,Vineetha;Decker,AnnM;Gay,ElaineA;Laudermilk,Lucas;Maitra,Rangan
• 通讯作者: Maitra,Rangan

Structure-Activity Relationship Development Efforts towards Peripherally Selective Analogs of the Cannabinoid Receptor Partial Agonist BAY 59-3074.

• DOI: 10.3390/molecules27175672
• 发表时间: 2022-09-02
• 期刊: Molecules (Basel, Switzerland)