优化化剂和纳米粒子战略,用于高活性Pd载荷可生物降解的基疗法种子
Emanuel Sporer1, Claire Deville1, Natan J W Straathof1
1The Hevesy Laboratory, DTU Health Technology, Frederiksborgvej 399, 4000, Roskilde, Denmark.
EJNMMI radiopharmacy and chemistry
|December 31, 2024
概括
可生物降解的支臂疗法种子是使用两种改善癌症治疗的策略开发的. 这两种方法都显示出高放射性和保留,以化剂为基础的方法优先考虑生物降解性.
科学领域:
- 在瘤学瘤学.
- 放射化学 放射化学是指辐射化学.
- 材料科学 材料科学 材料科学
背景情况:
- 目前的支臂疗法 (BT) 方法使用大量的放射性源,导致应用器相关的创伤和放置限制.
- 永久性植入物可能会导致长期的患者不适.
- 可注射生物降解种子为克服这些局限性提供了一个有希望的替代方案.
研究的目的:
- 调查两种创建可生物降解的基疗法种子的新策略.
- 评估这些种子的可行性,以提供高放射性剂量.
- 评估开发的基疗法种子的稳定性和生物降解性.
主要方法:
- 策略1:制备标有Palladium-103 ([103Pd]PdAuNPs) 的金合金纳米粒子.
- 策略2:合成[103Pd]Pd-SSIB,使用[16]aneS4化剂和糖七精酸盐.
- 这两种配方均分散在乳糖八酸和乙醇 (LOIB:EtOH) 中,以便注射.
主要成果:
- 两种策略都实现了高放射性化学产量 (83%的PdAuNPs,99%的Pd-SSIB).
- 配制的种子达到1.0-1.5 GBq/mL的高活性.
- 在一个月内,在水性缓冲和小鼠血清中观察到微不足道的放射性释放 (<1%).
结论:
- 两种开发的策略都成功地创造了具有高活性和保留的可注射支臂疗法种子.
- 使用[16]aneS4化剂的[103Pd]Pd-SSIB策略显示出优异的生物降解性.
- 这些发现支持了这些可生物降解的种子在先进的支架疗法应用中的潜力.
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