在水友相互作用染色学中揭示了寡聚核酸结构和二聚体分离之间的联系
Honorine Lardeux1,2, Kathrin Stavenhagen3, Clément Paris3
1School of Pharmaceutical Sciences, University of Geneva, CMU─Rue Michel Servet 1, Geneva 4 1211, Switzerland.
以前未被识别的更高阶结构是使用水友相互作用色谱 (HILIC) 治疗性寡核酸 (ON) 异构体分离的主要驱动因素. 这项研究揭示了ON折叠如何影响分离,以及如何调整色谱条件来控制它.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 制药科学 制药科学
背景情况:
- 治疗性寡核酸 (ONs) 通常含有酸 (PS) 修饰,引入性,并导致二聚体.
- 准确地描述ON二聚体构成至关重要,特别是在临床开发中的小干扰性核糖核酸 (siRNAs).
研究的目的:
- 在水友相互作用染色体 (HILIC) 中识别ON二聚体分离的主要原因.
- 为了确定寡核酸折叠和二聚体分离之间的关系.
- 通过调整色谱参数来证明对二聚体分离的控制.
主要方法:
- 符合性预测和化概况,以分析寡核酸折叠.
- 质谱学和HILIC将折叠与二聚体分离相关联.
- 染色学设置的系统变化 (温度,孔径,静止相,离子强度,有机修饰剂).
主要成果:
- 高阶结构 (折叠) 被确定为HILIC.中ON异构体分离的主要原因.
- 在ON折叠和观察到的二聚体分离之间建立了直接联系.
- 通过操纵色谱条件来增强或抑制二聚体分离的方法被证明.
结论:
- 这项工作阐明了寡核酸高阶结构在HILIC二聚体分离中的关键作用.
- 这些发现为改进含有PS的治疗ON的基于HILIC的表征提供了基础,包括对siRNA二聚体分布的批量对批量监测.
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