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离子对逆相和水友相互作用色谱方法用于分析酸酸寡核酸
Martin Gilar1, Brooke M Koshel1, Robert E Birdsall1
1Waters Corporation, 34 Maple Street, Milford, MA 01757, USA.
Journal of chromatography. A
|November 4, 2024
概括
从杂质中分离酸寡核酸是具有挑战性的. 水友交互色谱提供了一种优越的方法,用于从目标寡核酸中分离截断和二杂质.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 氧核酸合成的合成方法
背景情况:
- 酸酸寡核酸是关键的治疗剂.
- 从与合成相关的杂质中分离全长的酸核酸,如截断序列和二键,对于纯度和有效性至关重要.
- 现有的染色学方法,如离子对逆相染色学,在有效地解决这些杂质方面面临挑战.
研究的目的:
- 为了研究和比较染色学技术,将25-mer酸酸核酸脱离其n-1 (24-mer) 截断物种和酸杂质.
- 评估离子配对剂对离子对逆相色谱中的分离选择性对离子配对剂的疏水性的影响.
- 探索水友交互色谱作为改进杂质分辨率的替代方法.
主要方法:
- 使用胺离子配对剂的离子对逆相色谱 (IP-RPC).
- 水友相互作用色谱学 (HILIC).
- 对25-默尔完全基化寡核酸与24-默尔截断物种和基杂质的分析.
主要成果:
- 在IP-RPC中,基胺离子配对剂的疏水性影响了n-1物种的分离.
- 二杂质在IP-RPC中类似于24-mer杂质的化,使分离复杂化.
- 希利克 (HILIC) 显示出一个明显的保留模式,24-mer杂质在25-mer和酸杂质之前排泄,然后排泄,从而实现更好的分辨率.
结论:
- 与离子对逆相色谱相比,水友相互作用色谱为酸寡核酸提供了更有效的分离策略.
- HILIC成功地从全长酸寡核酸中分解了截断的 (n-1) 和酸杂质.
- 这种改进的分离对于确保治疗性寡核酸的质量和纯度至关重要.
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