针对GRN mRNA中miR-29b结合部位的反感性寡核酸增加了progranulin的翻译
Geetika Aggarwal1, Subhashis Banerjee1, Spencer A Jones1
1Division of Geriatric Medicine, Department of Internal Medicine, Saint Louis University School of Medicine, St Louis, Missouri, USA; Department of Pharmacology and Physiology, Saint Louis University School of Medicine, St Louis, Missouri, USA; Institute for Translational Neuroscience, Saint Louis University, St Louis, Missouri, USA.
The Journal of biological chemistry
|November 19, 2023
概括
反感性寡核酸 (ASO) 可以通过阻断microRNA结合部位来增加progranulin蛋白水平. 这种新的方法显示了对前性痴呆症 (FTD) 和其它哈普隆缺陷障碍的治疗潜力.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 异构性GRN突变通过哈普洛缺陷导致前性痴呆症 (FTD).
- 增加前列腺素水平是FTD的关键治疗策略.
- 微RNAs,例如miR-29b,可以负面调节progranulin (GRN) 蛋白质表达.
研究的目的:
- 调查反感性寡核酸 (ASOs) 作为一种增强progranulin表达的方法.
- 确定ASO是否可以通过向GRN mRNA 3' UTR.中miR-29b结合位点来增加GRN蛋白水平.
主要方法:
- 设计和测试的ASO可以在人类GRN mRNA上绝缘地阻断miR-29b结合部位.
- 在神经瘤细胞,iPSC衍生的神经元和人性化的GRN小鼠模型中评估了progranulin蛋白水平.
- 使用FRET测定证实ASO介导的竞争与miR-29b.
- 采用了多体概况分析来分析ASO对GRN转换的影响.
主要成果:
- 确定了16个ASO,在细胞培养中剂量依赖地增加了progranulin蛋白.
- 在iPSC衍生的神经元和相关的小鼠模型中证明了ASO的有效性.
- 确定的ASOs有效地将miR-29b从GRNmRNA目标部位移除.
- 显示的ASO增强了新合成的progranulin蛋白的翻译.
结论:
- 通过部分抑制微RNA结合,ASO可以有效地用于增加标蛋白水平.
- 这种ASO策略提供了一个有前途的治疗方法,用于治疗益格兰素缺乏性FTD.
- 这些发现支持ASO在治疗其他哈普缺乏症疾病方面的潜力.
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