一种新型的辅助剂稳定了达克西博胺毒素A
Shaoqiu Zhuo1, G Reza Malmirchegini1, Conor J Gallagher1
1Revance, 1222 DEMONBREUN ST, NASHVILLE, TN 37203, USA.
International journal of pharmaceutics
|October 10, 2025
概括
一种新的合成 (RTP004) 和多酸盐20 (PS20) 有效地稳定了甲型肉毒素 (BoNTA) 配方. 这种组合可以防止蛋白质吸附并增强稳定性,为人血清白蛋白 (HSA) 提供更安全的替代品.
科学领域:
- 生物化学 生物化学
- 蛋白质配方 蛋白质配方 蛋白质配方
- 药物运输 药物运输 药物运输
背景情况:
- 蛋白质药物配方可能会遭受表面吸附和结构完整性损失,降低功效,特别是低度生物制剂,如甲型玻尿素毒素 (BoNTA).
- 商业BoNTA产品经常使用人血清白蛋白 (HSA) 作为辅助剂,以防止蛋白质吸附到容器表面,但HSA存在潜在的安全问题.
- 已观察到HSA与BoNTA核心神经毒素 (RTT150) 在高温 (45-50°C) 下以剂量依赖的方式在pH值5.5.5时形成聚合复合物.
研究的目的:
- 评估一种新型配方,使用专有合成化 (RTP004) 作为BoNTA配方中HSA的潜在替代品.
- 评估RTP004与多酸盐20 (PS20) 结合,提高BoNTA的稳定性并防止其表面吸附的能力.
- 为了比较RTP004/PS20的疗效和所需度与HSA用于BoNTA稳定.
主要方法:
- 研究了RTP004与150kDa的BoNTA核心神经毒素 (RTT150) 的结合.
- 在RTP004和PS20的存在下评估了BoNTA的热稳定性.
- 使用RTP004/PS20配方量化防止RTT150在容器表面的表面吸附.
主要成果:
- RTP004与核心神经毒素结合,并显著提高了其热稳定性.
- RTP004和PS20的组合完全阻止了RTT150.0的表面吸附.
- 在10~100倍低于HSA的度下,RTP004是有效的.
结论:
- RTP004和PS20的组合为BoNTA提供了一个有效和新的配方策略.
- 这种配方增强了BoNTA的稳定性,并防止在制造过程中吸附,减轻了与HSA相关的风险.
- 使用RTP004/PS20避免了与HSA作为辅助剂相关的理论安全风险和限制.
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