在中枢神经系统中,量化和减轻由反感性寡核酸诱导的运动表型
Michael P Moazami1, Julia M Rembetsy-Brown1, Samantha L Sarli1
1RNA Therapeutics Institute, UMass Chan Medical School, Worcester, MA 01605 USA.
概括
反感性寡核酸 (ASOs) 可以治疗神经系统疾病,但可能导致运动副作用. 对ASO化学和配方的修改可以提高它们在中枢神经系统 (CNS) 的安全性和耐受性.
科学领域:
- 神经科学是一个神经科学.
- 氧核酸治疗药物 治疗药物
- 毒理学 毒理学 毒理学
背景情况:
- 反感性寡核酸 (ASOs) 显示出通过脑脊液注射治疗神经系统疾病的前景.
- 酸 (PS) 修改的gapmer ASOs可以诱导中枢神经系统管理后的过渡性运动缺陷,包括动力衰竭和发作.
- 了解和减轻ASO诱导的神经毒性对于推进这些疗法至关重要.
研究的目的:
- 调查ASO化学修饰和配方在中枢神经系统输送后对急性运动表型的影响.
- 阐明ASO诱导的神经毒性背后的机制.
- 确定提高ASO治疗药物在中枢神经系统中耐受性的策略.
主要方法:
- 开发一种专门的行为评分试验,以量化ASO诱导的运动效应.
- 对ASO耐受性的各种糖和酸盐修饰的系统评估.
- 评估PS含量和配方策略 (双价离子,缓冲区选择) 在ASO毒性中的作用.
- 研究核酸感应免疫路径的潜在参与.
主要成果:
- 糖和酸盐的修改都显著影响ASO诱导的运动表型;与DNA相比,2'-替代RNA的修改提高了耐受性.
- 降低 gapmer ASO 的酸 (PS) 含量可以改善其毒性,但有时会以有效性或持续时间为代价.
- 急性ASO毒性并非主要由主要核酸感应免疫路径中介.
- 使用双价离子的配方和避免酸盐缓冲区,在ASO耐受性方面提供了适度的改善.
结论:
- ASO的化学结构和配方极大地影响了中枢神经系统 (CNS) 的耐受性.
- 平台级药物化学和配方方法可以减轻ASO诱导的神经毒性.
- 这项研究为中枢神经系统中的寡核酸毒理学提供了宝贵的见解,为更安全的ASO疗法铺平了道路.
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