在中风病理生理学和治疗中揭示可溶性酸环酶激活和氧化还原信号之间的相互作用
Alexander G Grønning1, Sebastian E Vonhof2, Mahmoud Elbatreek3
1Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copengagen 2200, Denmark; Department of Mathematics and Computer Science, University of Southern Denmark, Odense 5230, Denmark.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
|January 14, 2025
概括
溶性酸环酶 (sGC) 激活通过降低NADPH氧化酶 (NOX) 4和5的调节来减少有害的活性氧物种 (ROS). 这种依赖cGMP的途径为涉及氧化应激的条件提供了潜在的治疗益处.
科学领域:
- 生物化学 生化学
- 细胞生物学 细胞生物学
- 身体生理学 身体生理学
背景情况:
- 溶性酸环酶 (sGC) 调节循环氨酸单酸 (cGMP) 信号传递,影响各种生理过程.
- 增加活性氧物种 (ROS) 的形成可以使sGC失活,导致血管功能受损和神经损伤.
- 在氧化还原信号传递中cGMP的确切作用尚不清楚.
研究的目的:
- 为了研究sGC激活在低氧条件下对ROS产生的影响.
- 阐明cGMP影响氧化还原信号的机制.
- 探索调节sGC活动的治疗潜力.
主要方法:
- 在模拟中,模拟cGMP和ROS之间的关系.
- 使用人类微血管内皮细胞进行体外研究.
- 对NADPH氧化酶 (NOX) 4和5表达和NF-κB通路激活的分析.
主要成果:
- 在低氧状态下,sGC激活显著降低了ROS和反应性物种,独立于除尘者效应.
- 这种减少是通过在再注射过程中降低NOX4和NOX5表达的调节来调节的.
- 在和体外数据中,NF-κB1和RELA/p65被确定为关键的转录因子,在sGC激活时p65核转位减少.
结论:
- 通过NF-κB通路降低NOX4/5表达,cGMP信号传递在减少ROS方面发挥着至关重要的作用.
- sGC激活为控制氧化应激提供了一种新的机制.
- 这些发现突显了sGC调节器在与氧化损伤相关的疾病中的治疗潜力.
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