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Yan Lin¹, Jiayin Wang¹, Xingyu Zhuang¹

¹Department of Neurology, Shandong Key Laboratory of Mitochondrial Medicine and Rare Diseases, Research Institute of Neuromuscular and Neurodegenerative Diseases, Qilu Hospital of Shandong University, No. 107 West Wenhua Road Jinan, Jinan, Shandong, 250012, China.

Journal of translational medicine

|August 22, 2024

概括

队列补充剂在治疗由线粒体转移RNA (mt-tRNA) Asn变异引起的线粒体疾病方面表现有前途. 这种方法可以恢复线粒体功能并改善患者的治疗结果.

科学领域:

线粒体遗传学和疾病
分子生物学和tRNA修饰
生物化学和细胞呼吸

背景情况:

线粒体tRNA (mt-tRNA) 变体与各种人类疾病有关.
转录后对mt-tRNA的修改,如素 (Q) 结合,对于有效的线粒体mRNA转化至关重要.
最近对mt-tRNA^Asn中的Q修饰的鉴定突出了线粒体健康的新研究领域.

研究的目的:

在具有mt-tRNA^Asn变异的患者的细胞模型中研究队列的治疗有效性.
在mt-tRNA^Asn中确认新型m.5708 C>T变异的致病性.
评估queuine在缓解与这些变体相关的线粒体功能障碍方面的潜力.

主要方法:

分析了来自四个家庭的六名患者,他们发现了mt-tRNA^Asn变体.
使用质谱学量化队列水平的量化.
对来自患者的组织和细胞系 (LCLs) 进行全面的临床,遗传,体化学,生物化学和分子分析.

主要成果:

新型m.5708 C>T mt-tRNA^Asn变体的致病性通过降低mt-tRNA^Asn水平,减少蛋白质合成,氧气消耗受损和呼吸复合体活性降低而得到证实.
在携带这些变异的患者中观察到显著降低的血清队列水平.
在体外队列补充成功恢复了线粒体功能,包括膜潜力和氧气消耗,同时减少了活性氧物种.

结论:

在mt-tRNA^Asn中的m.5708 C>T变体具有病原性,有助于了解线粒体疾病.
队列补充作为一种潜在的治疗策略来稳定mt-tRNA^Asn并改善线粒体功能障碍.
这些发现表明,对于开发针对性治疗的mt-tRNA^Asn相关线粒体疾病的患者有前途意义.

关键词:

线粒体疾病线粒体疾病队列队列是一个队列.治疗疗法治疗疗法 m.5708C > T T 在这里.mt-tRNAAsnnn 的使用情况.

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