APOL1调节了氨酸-氨酸系统
Vinod Kumar1,2, Prabhjot Kaur1,2, Kameshwar Ayasolla1
1Department of Medicine and Feinstein Institute for Medical Research, Zucker School of Medicine, Hempstead, NY 11549, USA.
Biomolecules
|January 8, 2025
概括
微RNA 193a (miR193a) 激活氨酸酶系统 (RAS),并在与APOL1相关的病中损害细胞. 抑制miR193a可以通过恢复维生素D受体 (VDR) 和 podocyte标记物来保护FSGS.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- APOL1风险基因 (G1,G2) 增加了对焦点细分细胞凝结症 (FSGS) 的敏感性.
- 氨酸-血管激素系统 (RAS) 和微RNA在损伤中起作用.
- 维生素D受体 (VDR) 和威尔姆斯瘤1 (WT1) 对细胞功能至关重要.
研究的目的:
- 调查miR193a在激活RAS中的作用及其在APOL1风险等位基因背景下对细胞损伤的影响.
- 探索 miR193a,VDR,WT1 和 podocyte 分子标记物之间的调控关系.
主要方法:
- 对表达不同APOL1变体 (G0,G1,G2) 的分化受体细胞 (DPD) 进行了宁,VDR和受体细胞分子标记物 (PDMM) 的分析.
- 评估了基因表达 (mRNA) 和RAS成分,VDR,WT1和其他关键蛋白质的蛋白质水平.
- 进行了生物信息学,化酶测定和对miR193a转基因小鼠的研究,以证实调控相互作用.
主要成果:
- 与G0 podocytes相比,APOL1 G1/G2 podocytes显示了蛋白和RAS成分的增加,但VDR和WT1的减少.
- miR193a直接向VDR,导致VDR表达减少和细胞中的蛋白增加.
- miR193a转基因小鼠表现出血液中的 ангиотензин II (Ang II) 水平升高,VDR和PDMMs降低,并且细胞中的蛋白增加.
结论:
- miR193a通过通过VDR和WT1调制激活RAS来促进APOL1相关的FSGS中的损伤.
- 针对miR193a可能为APOL1介导的脏疾病提供治疗策略.
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