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离子色谱法-紫外检测注射液中脱氧核苷酸钠

Instrument Type: IC

脱氧核苷酸钠是一种具有遗传特性的化学物质,其在 个体的生长、繁殖、遗传、变异等生理生化功能方面起着 非常重要的作用。目前常用注射用脱氧核苷酸是用脱氧核 糖核酸(DNA)为原料,经生物酶催化水解反应生成脱 氧腺苷酸(dAMP),脱氧鸟苷酸(dGMP)、脱氧胞苷 酸(dCMP)和脱氧胸苷酸(TMP)等四种脱氧核苷酸, 然后经层析分离获得高纯度四种单一脱氧核苷酸产品。医 药常使用复方制剂,组分包含脱氧糖胞嘧啶核苷酸、脱氧 核糖腺嘌呤核苷酸、脱氧核糖胸腺嘧啶核苷酸及脱氧核糖 鸟嘌呤核苷酸钠盐。用于急、慢性肝炎,白细胞减少症, 血小板减少症及再生障碍性贫血等的辅助治疗。 对于脱氧核苷酸的检测,现有药典方法推荐使用 Whatmen Partisil-5 SAX色谱柱分离[1],分离效果较差,且 硅胶基离子交换柱使用寿命短。本文则着重研究了高分子 聚合物机制的DNAPac 系列阴离子交换色谱柱用于脱氧核 苷酸的分离[2],并将之应用于多种不同品质的注射用脱氧 核苷酸钠制品的测试。

AN162: Determination of Nucleotides by Ion Chromatography with UV Absorbance Detection.

Instrument Type: IC

The purpose of this application note is to provide a simple and direct assay of nucleotides and deoxynucleotides in amplification cocktails used for PCR, rolling circle amplifications, DNA and RNA polymerase reactions, and reverse-transcriptase reactions. Nucleotides are separated by anion exchange on the DNAPac PA100 column using gradient elution and detected by absorbance at 260 nm. Resolution of these components provides a means to assay their quality and help identify causes of amplification failure.