揭示暴露于光线的影响 贝瓦西祖马布在临床环境中的稳定性
Elisabetta De Diana1, Chiara Sottoriva2, Giorgia Zorzetto3
1Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Italy; Department of Chemistry, Biology and Biotechnology, University of Perugia, Italy.
International journal of pharmaceutics
|January 9, 2026
概括
暴露于光线会降解贝瓦西祖马布 (bvzr),降低其抗血管性活性和由于聚合物形成而导致的VEGF-A结合. 氨基酸修饰发生,但免疫原性没有增加,强调在施用期间需要光线保护.
科学领域:
- 生物化学 生物化学
- 药理学 药理学是指药理学的学科.
- 免疫学 免疫学 免疫学
背景情况:
- 贝瓦西祖马布是一种用于各种癌症的单克隆抗体抗血管性疗法.
- 它向VEGF-A,以抑制瘤血管生成和血管化.
- 在处理过程中暴露于光线可能会损害贝瓦西祖马布的稳定性和有效性.
研究的目的:
- 为了研究由光诱导的贝瓦西祖马布-bvzr的化学物理不稳定性.
- 评估暴露于光线对贝瓦西祖马布VEGF-A结合,抗血管新生活性和免疫性的影响.
- 为了识别贝瓦西祖马布的光诱导的修饰.
主要方法:
- 用模仿临床静脉注射的轻剂量对稀释的贝瓦西祖马布-bvzr进行辐射.
- 使用紫外线和CD光谱学分析形状变化.
- 对VEGF-A结合,抗血管性活性 (HUVEC测定) 和聚合物形成 (SEC,SDS-PAGE,TEM) 的评估.
- 使用人类单细胞衍生的树突细胞评估免疫性.
- 通过LC-MS指纹识别氨基酸修饰的识别.
主要成果:
- 暴露于光线并没有引起形状变化,但降低了VEGF-A结合和抗血管原效果.
- 高分子量聚合物在暴露于光线时以度依赖的方式形成.
- 对于贝瓦西祖马布聚合物,没有观察到体外树突细胞激活.
- 在特定区域的光诱导氨基酸修饰 (氧化,脱化,形式化),不包括CDRs.
结论:
- 贝瓦西祖马布-bvzr易受光诱导的降解,导致治疗活性降低.
- 聚合物形成是活动丧失的主要机制,而不会增加免疫性.
- 在Bevacizumab的储存,运输和施用期间,保护光线至关重要,特别是在长时间输注时.
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