脏衍生的Apolipoprotein M及其在急性损伤中的作用
Line S Bisgaard1,2, Pernille M Christensen1,2, Jeongah Oh3
1Department of Clinical Biochemistry, Copenhagen University Hospital-Rigshospitalet, Copenhagen, Denmark.
Frontiers in pharmacology
|February 5, 2024
概括
脏衍生的阿波利波蛋白M (apoM) 被分泌到血中,可能会防止尿路中的分子损失. 然而,特异性ApoM过度表达并没有保护小鼠免受急性损伤.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 阿波利波蛋白M (apoM) 主要存在于肝脏和脏的靠近管道中.
- 在血中,ApoM 结合了高密度LH 颗粒,并运输了斯芬戈-1-酸盐 (S1P).
- 脏衍生的apoM通常无法在尿液中检测到,但由于巨素受体缺乏,它可能会消失.
研究的目的:
- 为了研究apoM在脏生物学中的作用.
- 为了检查脏衍生的apoM在急性损伤 (AKI) 的功能.
主要方法:
- 创建了一个脏特异的人类apoM转基因小鼠模型 (RPTEC-hapoMTG).
- 使用西斯普拉丁或缺血/再输液诱导的AKI.
- 使用人类近接管状上皮细胞 (HK-2) 过度表达apom用于体外研究.
主要成果:
- 在转基因小鼠的血中检测到人类apoM,其S1P水平升高.
- 在体外,ApoM从近端管状细胞以垂直 (尿液) 和侧底 (血液) 的方式分泌.
- 在AKI后的转基因和野生类型小鼠之间,损伤得分或炎症标志物没有显著差异.
结论:
- 脏衍生的apoM被分泌到血中,这表明它在保留尿液分泌中的分子方面发挥了作用.
- 脏中ApoM的过度表达并没有对实验性AKI提供保护.
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