OTUD7B通过稳定THP-1和U937细胞中的Lox-1来控制oxLDL的吸收
Yanbiao Rao1, Feng Li1, Chao Wan1
1The Fifth Hospital of Xiamen, No. 101 Min'an Road, Xiang'an District, Xiamen, Fujian, 361101, China.
概括
双基因酶OTUD7B稳定了食尸体受体Lox-1,对于氧化LDL吸收至关重要. 针对这种OTUD7B-Lox-1相互作用可能为动脉样硬化提供新的治疗策略.
科学领域:
- 生物化学 生化学
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 拾尸体受体Lox-1通过巨细胞调解氧化低密度脂蛋白 (oxLDL) 的吸收,这是动脉样硬化发展的关键过程.
- 乌比基化与Lox-1降解有关,但确切的调节机制尚不清楚.
研究的目的:
- 研究乌比奎丁-蛋白酶体系统在调节Lox-1稳定性和功能的作用.
- 为了确定与Lox-1相互作用和调节的特定duebiquitinases.
主要方法:
- 使用了THP-1和U937细胞系.
- 对OTUD7B和Lox-1进行了淘汰和过度表达的研究.
- 评估了oxLDL摄入量和Lox-1蛋白水平.
- 研究了蛋白质-蛋白质相互作用和二维基化活性.
主要成果:
- 确定了OTUD7B作为一个稳定巨细胞中的Lox-1的双基因酶.
- OTUD7B与Lox-1直接相互作用,促进其稳定性.
- Knockdown 的 OTUD7B 降低了 Lox-1 水平和受损的 oxLDL 吸收.
- 在OTUD7B缺乏细胞中,Lox-1的过度表达挽救了oxLDL的吸收.
结论:
- OTUD7B增强了Lox-1的稳定性,从而调节了oxLDL的吸收.
- OTUD7B-Lox-1轴代表了动脉样硬化的潜在治疗标.
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