在单边尿路阻塞小鼠模型中对转胺酶2的药理学调制
Judit Prat-Duran1, Isabela Bastos Binotti Abreu De Araujo2, Nina Juste1
1Department of Biomedicine, Health, Aarhus University, Denmark.
European journal of pharmacology
|October 6, 2024
概括
转谷氨酸酶2 (TG2) 的闭合构造可能会对纤维化提供保护. 针对TG2在其封闭状态显示在分子水平的抗纤维化作用,影响亲纤维化标志物.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 转胺酶2 (TG2) 通过促进TGF-β1和细胞外矩阵交联,与纤维化有关.
- TG2的开放形状驱动纤维化,而其封闭状态与血管扩张有关.
- 这项研究调查了TG2在封闭状态下对纤维化和血压调节的保护作用.
研究的目的:
- 探索TG2在纤维化上的封闭形状的潜在保护作用.
- 为了研究TG2封闭状态对血压调节的影响.
- 评估促进TG2在脏疾病中的封闭状态的治疗潜力.
主要方法:
- 使用单边尿路阻塞 (UUO) 的小鼠模型.
- 使用LDN27219促进TG2封闭形状,用载体和candesartan作为对照.
- 评估TG2表达,亲纤维细胞介质 (西方斑块,qPCR,组织学) 和血压 (尾巴手套).
主要成果:
- UUO脏显示纤维素,原3α1 (Col3α1) 和α-平滑肌动蛋白的增加.
- 脏TG2蛋白在UUO后降低,但载体和candesartan组中转胺酶活性增加.
- LDN27219降低了亲纤维的mRNA,但没有降低蛋白质水平;坎德沙坦降低了血压,但没有改变纤维化标志物.
结论:
- 脏TG2表达和活性被解离,观察到转胺酶活性增加.
- LDN27219在mRNA水平上影响脏亲纤维细胞标记物,并降低TG2转胺酶活性.
- 在其封闭的构造中,TG2在分子水平上表现出抗纤维性作用,独立于血压变化.
相关概念视频
01:27Transducer Mechanism: Enzyme-Linked Receptors
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include:
01:15Impact of Pharmacokinetic–Pharmacodynamic Models: Regulatory Decisions
PK–PD modeling has significantly influenced FDA regulatory decisions, particularly drug approval, dosage optimization, and labeling. These models integrate pharmacokinetics (PK) and pharmacodynamics (PD) to predict drug behavior and effects, aiding in optimizing dosing regimens and enhancing the probability of clinical trial success.One notable example is Nesiritide (Natrecor®), a recombinant human brain natriuretic peptide for treating acute decompensated congestive heart failure (CHF).