聚合物_纳米粒子_生物医学材料_材料科学-默克生命科学

基于聚合物纳米颗粒、微球和脂质体的新型给药系统在增强药物治疗效果方面具有巨大潜力。聚(乳酸-共-乙醇酸)(PLGA)、聚乳酸(PLA)和聚己内酯(PCL)等生物相容性强的可降解聚合物已被广泛用于开发颗粒给药系统。活性药物成分(API),无论是小分子还是生物化合物,都可以封装到微球和纳米颗粒中,或附着在颗粒表面,用于特定的给药应用,如持续释放、靶向给药和保护 API 免受过早降解。在服用载药的生物可降解纳米颗粒和微颗粒后,可生物相容的聚合物会通过水解酯骨架降解为无毒产品。通过选择合适的聚合物类型和调整封装工艺,可以调节药物释放率。
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Degradex® 聚合物微球和纳米颗粒
我们提供基于 Degradex® PLGA 和 PCL 的普通和荧光微球和纳米颗粒。普通 PLGA 微球和 PLGA 纳米颗粒可在药物和 RNA 给药配方中用作控制剂,或在将 API 装入载体之前用于测试系统的兼容性。荧光纳米颗粒和微球可用于多种成像和诊断应用,例如:
- 荧光纳米颗粒和微球可用于多种成像和诊断应用:
- 检测结合事件或信号增强
- 流体追踪
- 细胞追踪
- 吞噬研究
- 荧光显微镜
- 药物发现研究
- 药物载体,可将原料药附着在颗粒表面并进行输送
Degradex® poly(lactic-co-glycolic acid) (PLGA) and polycaprolactone microspheres and nanoparticles 是可生物降解、生物相容性好的聚合物颗粒,直径在 100 nm 到 50 μm 之间。Degradex® 颗粒可用于在配方开发前确认药物载体的兼容性。此外,Degradex® 颗粒表面的羧基官能化使其可用于靶向治疗并延长循环时间。
我们的荧光聚乳酸-共聚乙醇酸(PLGA)颗粒的激发/发射波长为 460/500、530/582、644/665 和 780/820 nm,便于在生物成像和诊断应用中观察颗粒,包括细胞追踪、吞噬研究、荧光显微镜和药物发现。我们提供绿色、橙色、红色和近红外荧光 PLGA 粒子,直径从 100 纳米到 50 微米不等。
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