APOBEC-1 删除增强了西斯普拉丁诱导的急性损伤
Xiaojia Guo1, Valerie Blanc2, Nicholas O Davidson2
1Section of Nephrology, Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA.
Scientific reports
|December 14, 2023
概括
阿波蛋白B mRNA编辑酶,催化聚1 (Apobec-1) 在损伤恢复中起着至关重要的作用. 它的缺失使急性损伤 (AKI) 的严重程度和小鼠的死亡率恶化.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 西斯普拉丁 (CP) 和缺血-再输液 (IR) 是急性损伤 (AKI) 的常见原因.
- 靠近管管损伤是AKI的标志,随后的修复机制对恢复至关重要.
- 特定酶在损伤反应和修复中的作用仍然不完全理解.
研究的目的:
- 调查Apolipoprotein B mRNA编辑酶,催化聚1 (Apobec-1) 在AKI恢复中的作用.
- 确定Apobec-1缺乏对AKI严重性和死亡率的影响.
- 探索Apobec-1在损伤中的保护机制.
主要方法:
- 使用的Apobec-1淘汰赛 (KO) 和野生型 (WT) 鼠标接受了CP诱导的AKI和单方面IR,并进行了切除术.
- 通过血肌素 (pCr) 水平和组织学分析评估损伤的严重程度.
- 量化基因表达 (KIM-1,NGAL,RIPK1,ASCL4),脂质积累和免疫细胞透到脏组织中.
- 使用小鼠近端管细胞进行了体外研究,以评估Apobec-1对CP诱导的细胞毒性的保护作用.
主要成果:
- 与CP和IR模型中的WT小鼠相比,Apobec-1 KO小鼠的死亡率显著更高,AKI更严重.
- 阿波贝克-1KO脏显示缩增加,KIM-1,NGAL,RIPK1,ASCL4表达升高,脂质积累增加.
- Apobec-1 缺乏导致中性粒细胞增加和T细胞激活,但损伤脏中的巨细胞减少.
- 在近端管细胞中,Apobec-1的过度表达提供了对CP诱导的细胞死亡的保护.
结论:
- Apobec-1 在减轻损伤和促进 AKI 恢复方面发挥着关键的支持生存的作用.
- 阿波贝克-1缺乏症通过增加死亡,炎症和脂质积累而加剧AKI.
- 增强Apobec-1表达是一种潜在的治疗策略,用于管理AKI.
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