丹特罗是一种HDL相关的偏氧酶-1激活剂,具有免疫抑制和动脉保护性质
Anastasia-Georgia Dedemadi1, Eirini Sevdali2, Daphne Georgiadou3
1Institute of Biosciences and Applications, National Center for Scientific Research "Demokritos", Agia Paraskevi, Athens, Greece; Department of Chemistry, National and Kapodistrian University of Athens, Zografou, Athens, Greece.
Biochimica et biophysica acta. Molecular and cell biology of lipids
|January 22, 2025
概括
丹特烯增强了偏氧酶1 (PON1) 活性,改善了高密度脂蛋白 (HDL) 的功能. 这种药物通过调节免疫细胞反应来减少小鼠关节炎的严重程度,这表明它有可能治疗动脉样硬化.
科学领域:
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 人类偏氧酶1 (PON1) 是一种与高脂结合的酶,对氧化脂质的水解和对动脉样硬化进行保护至关重要.
- 减少PON1活性与增加动脉样硬化风险和类风湿性关节炎的严重程度有关.
- 目前还没有发现有效调节PON1活性和HDL功能的药物.
研究的目的:
- 发现增强高脂相关PON1活性的小分子.
- 确定用于调节PON1和HDL介导的动脉保护作用的化学工具.
主要方法:
- 选了956种在市场上销售的药物的库,使用对HDL和特定基质的动力吸收性测试.
- 通过使用与重组PON1及其变体的酶分析验证了已识别的化合物.
- 在原诱导性关节炎 (CIA) 鼠标模型中研究了已识别的激活剂的影响.
主要成果:
- 丹特烯被确定为一种新型PON1激活剂,增加了帕洛克索纳酶和阿里莱斯特酶的活动.
- 在体内,dantrolene在CIA小鼠中的使用增强了PON1活性和HDL抗氧化能力.
- 丹特罗通过抑制CD4+T细胞分化成效能记忆和Th1细胞来降低关节炎的严重程度.
结论:
- 通过小分子增强HDL相关的PON1活性是一种可行的治疗策略.
- 丹特罗伦显示出作为动脉样硬化和免疫媒介炎症疾病的治疗剂的潜力.
- 准PON1活动可能为管理免疫反应和心血管风险提供新的方法.
相关概念视频
01:26Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin
653
Directly acting muscle relaxants like dantrolene and botulinum toxin (BoNT) have distinct mechanisms and applications. Dantrolene, a hydantoin derivative, acts on the ryanodine receptor (RYR1) in skeletal muscle cells. RYR1 are calcium channels present at the sarcoplasmic reticulum membrane. In response to excitation, they release calcium ions from the sarcoplasmic reticulum to the cytosol. Calcium promotes actin-myosin-mediated contraction of muscles.
The binding of dantrolene to the RYR1...
The binding of dantrolene to the RYR1...
653
01:26Heart Failure Drugs: Inotropic Agents
510
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
510