通过一个依赖于miR137的通路,TNF抑制了AQP2的表达
Shoujin Hao1, AnnMarie DelliPizzi2, Anna Pia Lasaracina1
1Department of Pharmacology, New York Medical College, Valhalla, New York, United States.
American journal of physiology. Renal physiology
|November 16, 2023
概括
瘤亡因子 (TNF) 通过miR-137.7调节脏中的水素-2 (AQP2) 表达. 这一途径影响功能和电解质平衡,揭示了血压调节的新机制.
科学领域:
- 脏生理学 脏生理学
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
背景情况:
- 已知瘤亡因子 (TNF) 抑制外水素 (AQP) 表达.
- 微RNA-137 (miR-137) 是水素-2 (AQP2) 表达的调节者.
- 在脏中TNF,miR-137和AQP2之间的相互作用仍然不清楚.
研究的目的:
- 调查TNF是否通过一个miR-137依赖机制抑制脏AQP2表达.
- 阐明TNF和miR-137在调节脏水和电解质平衡中的作用.
主要方法:
- 主要脏内髓收集管 (IMCD) 细胞被用于体外实验.
- 技术包括miRNA模仿转染,通过lentivirus对TNF进行沉默,以及暴露于高度介质.
- 在体内研究中,小鼠进行了TNF静止,并测量了尿液参数.
主要成果:
- miR-137直接向并降低IMCD细胞中的AQP2mRNA和蛋白质表达.
- 超性疾病在IMCD细胞中增加了miR-137和TNF表达.
- 提升TNF调节miR-137表达,沉默TNF增加了AQP2水平,影响了脏稀释能力.
结论:
- 通过一个依赖于miR-137的机制,TNF抑制脏AQP2的表达.
- 这条通路在调节功能,电解质平衡和潜在的血压方面发挥着作用.
- 像TNF这样的细胞因子正在成为超越炎症的生理反应的关键调解者.
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