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Jianan Huang¹, Yunlong Jiang¹, Ruiyuan Ji¹

¹Department of Pathophysiology, Key Laboratory of Targeted Intervention of Cardiovascular Disease and Molecular Intervention, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, China.

Biochemical pharmacology

|May 31, 2023

概括

掠食者受体A1 (SR-A1) 通过调节巨细胞炎症来保护腹腔大动脉动脉瘤 (AAA). 失去SR-A1会使AAA恶化,而恢复它则提供保护,突出了关键的治疗途径.

科学领域:

血管生物学血管生物学
免疫学免疫学免疫学
分子医学是分子医学.

背景情况:

腹腔大动脉动脉瘤 (AAA) 是一种普遍存在的疾病,其特征是细胞外矩阵降解和炎症,调节机制不明.
对AAA存在有限的治疗选择,强调需要阐明潜在的病理途径.

研究的目的:

为了研究食尸体受体A1 (SR-A1),一个巨细胞调节型号识别受体,在AAA.病变发生过程中的作用.
了解SR-A1影响AAA发展的分子机制.

主要方法:

在小鼠中建立了AAA模型,使用血管激素II或近动脉酸.
评估SR-A1表达在来自小鼠AAA大动脉的巨细胞中.
全球或骨髓细胞特异性SR-A1淘汰赛小鼠被用于评估AAA进展.
机理学研究包括评估炎症反应,光滑肌肉细胞损失,ECM降解和SR-A1-Lyn-STAT3-IRG1信号通路.

主要成果:

在AAA大动脉内的巨细胞中,SR-A1显著下调.
由于SR-A1缺乏,AAA通过增加血管炎症,光滑肌肉细胞损失和ECM降解而恶化.
缺少SR-A1抑制了免疫反应基因1 (IRG1) 并增加了巨细胞的炎症反应.
通过Lyn介导的STAT3酸化,SR-A1信号促进了IRG1的转录.

结论:

确定了巨细胞SR-A1-STAT3-IRG1轴对大动脉动脉瘤形成的保护作用.
这个轴对炎症的抑制对于预防AAA至关重要.
修复巨细胞SR-A1或其下游产品伊塔科纳特显示了AAA的治疗潜力.

关键词:

4-OI,4-奥克提尔伊塔科纳酸 (PubChem CID: 14239884) 的使用情况腹腔大动脉动脉瘤腹腔大动脉动脉瘤科利维林 (PubChem CID: 90477169) 是一个非常好的药物.免疫反应基因 1 炎症炎症是一种炎症.巨细胞是一个巨细胞.拾荒者受体A1是什么?这种药物被称为cryptotanshinone (PubChem CID: 160254).

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