合基因选择性thiomorpholino反意义的寡核化物作为一种治疗方法,用于融合在肉瘤的肌性侧面硬化症
Rita Mejzini1,2, Marvin H Caruthers3, Balazs Schafer3
1Centre for Molecular Medicine and Innovative Therapeutics, Health Futures Institute, Murdoch University, Murdoch, WA 6150, Australia.
International journal of molecular sciences
|August 10, 2024
概括
提奥莫菲林 (TMO) 修饰的反意义寡核酸 (AO) 能够有效地实现FUS基因的等位基因选择性淘汰. 这种方法对治疗FUS相关的肌缩性侧面硬化症 (ALS) 是有希望的.
科学领域:
- 遗传学和分子生物学
- 神经科学是一个神经科学.
- 氧核酸治疗药物 治疗药物
背景情况:
- 瘤融合基因 (FUS) 的致病变异与侵袭性骨髓缩侧硬化症 (ALS) 的形式有关.
- FUS-ALS是一种主导性疾病,需要选择性治疗策略.
- 反感性寡核酸 (AO) 是基因向疗法的一个有前途的平台.
研究的目的:
- 探索使用反感性寡核酸 (AO) 的FUS基因的等位基因选择性淘汰的潜力.
- 为了比较 methoxyethyl (MOE) 和 thiomorpholino (TMO) 修饰的 AOs 的疗效和选择性.
- 评估AO长度和间隙长度对等位基选择性和效率的影响.
主要方法:
- 设计和评估针对FUS基因中中性多态的gapmer类型的AOs.
- 在人类纤维细胞中测试含有甲基乙基 (MOE) 或形基 (TMO) 修饰的AO.
- 评估FUS转录水平,核内含,SFPQ聚合,以及非目标基因敲除.
主要成果:
- 与MOE修改的AO相比,TMO修改的AO表现出更高的等位基因选择性和有效性.
- 经过TMO修改的Gapmer Knockdown导致高达93%的检测到的FUS转录源自非目标等位基因.
- 与MOE修改后的AO相比,TMO修改后的AO显示了核包含和SFPQ聚合的减少形成.
结论:
- 对FUS的异基选择性淘汰是FUS-ALS的可行的治疗策略.
- 对于异位基因选择性AO应用,TMO修改提供了显著的优势.
- 优化AO设计,包括长度和间隙长度,对于最大限度地发挥治疗潜力至关重要.
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