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miR-140-5p过度表达有助于氧化应激和线粒体功能障碍哈森-吉尔福德症候群通过NRF2通路纤维细胞

Léa Toury¹, Diane Frankel², Sara Nael¹

¹Aix Marseille Université, INSERM, MMG, Marseille, France.

|October 31, 2025

概括

哈森-吉尔福德进发症综合征 (HGPS) 涉及由于progerin的加速衰老. 这项研究揭示了miR-140-5p会加剧HGPS中的氧化应激和线粒体功能障碍,这表明它是治疗点.

科学领域:

遗传学遗传学是一种遗传学.
分子生物学分子生物学
细胞衰老细胞衰老

背景情况:

哈森-吉尔福德进发症综合征 (HGPS) 是一种罕见的遗传疾病,导致快速衰老.
孕激素的积累破坏了细胞功能,并增加了HGPS中的氧化应激.
微RNAs (miRNAs) 涉及到HGPS的病变发生.

研究的目的:

为了研究HGPS病变发生的新型分子机制.
在HGPS纤维细胞中识别差异表达的miRNA.
阐明miR-140-5p在与HGPS相关的氧化应激和线粒体功能障碍中的作用.

主要方法:

对HGPS和控制纤维细胞的miRNA表达概况.
在体外模仿和抗miR转移以调节miR-140-5p水平.
评估氧化应激标志物,NRF2/KEAP1/HO-1通路活性和线粒体功能.

主要成果:

在HGPS和对照细胞之间确定了10个差异表达的miRNA.
在HGPS纤维细胞中,miR-140-5p和miR-140-3p被上调.
miR-140-5p的过度表达降低了NRF2/KEAP1/HO-1抗氧化途径的调节,增加了氧化应激,并在HGPS细胞中损害了线粒体功能.

结论:

miR-140-5p通过加剧氧化应激和线粒体功能障碍,在HGPS病理生理学中发挥着关键作用.
针对miR-140-5p提供了对HGPS的潜在治疗途径.
通过miR-140-5p对NRF2抗氧化途径的调节失调有助于HGPS的特征.

关键词:

哈森 - 吉尔福德预后综合征这就是NRF2的NRF2.拉明斯,拉明斯,拉明斯,拉明斯,拉明斯,拉明斯.在 miR-140 的情况下.这是一个微型RNA.线粒体中的线粒体.氧化应激是一种氧化应激.

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