在 trofhoblast 功能障碍和产前症中SIRT3 损伤和MnSOD 过乙化
Yangnan Ding1, Xuewei Zhang1, Jin Li1
1Department of Laboratory Medicine, the Third Affiliated Hospital of Zhengzhou University, Zhengzhou Key Laboratory for In Vitro Diagnosis of Hypertensive Disorders of Pregnancy, 7 Kangfu Qian Street, Zhengzhou 450052, China.
在孕前症 (PE) 中减少的Sirtuin 3 (SIRT3) 表达会通过非活性化超氧化物失真酶 (MnSOD) 来损害热囊细胞功能. 这种功能障碍有助于PE的发病,突出显示SIRT3的作用.
科学领域:
- 产科 产科 产科 产科 产科
- 线粒体生物学 线粒体生物学
- 细胞的新陈代谢
背景情况:
- 孕前 (PE) 影响2-8%的怀孕,与胎盘 trofhoblast 功能障碍有关.
- 线粒体脱甲基酶Sirtuin 3 (SIRT3) 调节新陈代谢和氧化应激,但其在PE中的作用尚不清楚.
研究的目的:
- 为了研究SIRT3在产前 (PE) 发病过程中的功能性作用.
- 探索SIRT3在热囊细胞功能障碍中的潜在分子机制.
主要方法:
- 分析了人类PE胎盘中的SIRT3表达.
- 在低氧和氧化应激下使用的体外模型 (HTR-8/SVneo细胞).
- 评估了 trofhoblast 增殖,迁移,反应性氧物种 (ROS) 和炎症因素.
- 研究了SIRT3对超氧化物脱酶 (MnSOD) 乙化和活性的影响.
主要成果:
- 人类PE胎盘显示SIRT3表达减少.
- 缺氧增加,而氧化应激减少,SIRT3表达在热囊细胞.
- 减少SIRT3抑制了热囊细胞增殖/迁移,并增加了ROS和炎症.
- 缺少SIRT3导致MnSOD过乙化和活性降低.
- 模仿MnSOD和过度表达可以逆转SIRT3缺乏引起的影响.
结论:
- 减少SIRT3表达有助于PE中热囊细胞功能障碍.
- 减少的SIRT3会导致MnSOD过乙化和失活,增加氧化应激和炎症.
- SIRT3在维持 trofhoblast 功能和预防 PE 病原发生方面发挥着至关重要的作用.
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