制备和结构性表征硫酸性八糖化物,具有与肝素类似的抗凝活性
Ning Yu1, Rui Fang1, Zhao Ding1
1Center for Molecular Metabolism, Nanjing University of Science & Technology, Nanjing 210094, China; Key Laboratory of Metabolic Engineering and Biosynthesis Technology, Ministry of Industry and Information Technology, 210094, China.
Carbohydrate polymers
|November 1, 2024
概括
一种新型的合成氨酸类似的八糖,八氨酸,为动物衍生的氨酸提供了更安全的替代品. 这种结构定义的分子表现出强大的抗凝剂活性,降低了出血风险.
科学领域:
- 生物化学 生物化学
- 有机化学 有机化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 肝素是动物衍生的抗凝剂,其限制包括供应变化,病毒污染风险和诸如出血和血小板减少等不良影响.
- 需要一种更安全的,化学合成的肝素替代品,这对于患者的安全和持续的供应至关重要.
研究的目的:
- 开发一种高效的化学合成结构上定义的氨酸类抗凝固剂八糖.
- 为了描述合成的八糖,并评估其抗凝活性和安全性,与肝素相比.
主要方法:
- 基于酸的方法被用于单O硫化酸糖的酸糖.
- 硫三氧化物-三甲基胺复合物被用于实现受控的硫化,产生定义的分子结构.
- 通过福里埃变换红外光谱学和NMR分析证实了结构特征.
- 在体外和体外模型中评估了抗凝剂活性,包括抑制凝血因子Xa和降低出血风险.
主要成果:
- 一种结构定义的硫酸性八糖化物 (SRO),名为octaparin,通过受控的硫化成功合成.
- 八巴林表现出强大的抗凝剂活性,有效抑制血液凝固和XA因子.
- 在体内研究显示,巴林剂量依赖性降低了小鼠的血栓形成.
- 最重要的是,与传统的肝素相比,八氨酸显著降低了出血风险.
结论:
- 八巴林是一种有前途的合成,结构定义的氨酸类抗凝剂.
- 其有利的安全性,特别是降低出血风险,使其成为动物来源的肝素的潜在替代品.
- 这种化学合成方法克服了与肝素生产相关的局限性.
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