响应pH的修改HAMA微球调节椎间盘的炎症微环境
Tao Ma1,2,3, Jingwei Wu1,2,3, Senlin Chen1,2,3
1Department of Orthopedics, The Affiliated Changzhou No. 2 People's Hospital with Nanjing Medical University, Changzhou 213003, China.
ACS applied materials & interfaces
|November 12, 2024
概括
这项研究开发了智能,对酸敏感的微球,用于向药物输送,以治疗椎间盘退化 (IVDD). 这些微球有效地提供抗炎药物,扭转了退化的磁盘中的破坏性炎症微环境.
科学领域:
- 生物材料科学 生物材料科学
- 药物输送系统 药物输送系统
- 再生医学是一种再生医学.
背景情况:
- 椎间盘退化 (IVDD) 涉及到局部乳酸积累,pH值降低和炎症,破坏了椎间盘平衡.
- 目前的治疗方法缺乏有针对性的药物输送,需要智能系统来进行有效的干预.
- 介素-1受体对抗剂 (IL-1 Ra) 显示出抗炎作用的潜力,但其生物半衰期短.
研究的目的:
- 设计敏感于酸的甲基化氨酸 (HAMA) 微球,用于IVDD中的向药物输送.
- 为了增强IL-1 Ra的缓释特性,使用牛血清蛋白纳米颗粒 (BNPs).
- 评估装有BNPs (修饰MS) 的修饰HAMA微球在逆转退行性核脉的炎症微环境中的有效性.
主要方法:
- 使用微流体技术制造对酸敏感的HAMA微球.
- 将IL-1 Ra加载到牛血清蛋白纳米颗粒 (BNPs) 上,以改善其半衰期.
- 通过希夫基化学结合对HAMA微球进行表面修饰,以进行纳米粒子附着和药物释放.
- 评估微球的可注射性,多孔性和纳米粒子加载效率.
主要成果:
- 成功构建了能够智能释放药物的酸敏感HAMA微球.
- 通过Schiff基键实现了BNPs在HAMA微球上的高效和均加载.
- 已证明改造的HAMA微球具有良好的注射性和多孔性.
- 表明修改后的MS可以显著扭转退行性核脉的炎症微环境.
结论:
- 开发了一种新的向药物输送系统,使用修改后的HAMA微球来治疗IVDD.
- 改性MS的酸敏感性和增强的药物保留提供了一个有前途的治疗策略.
- 这种方法有可能通过减轻炎症来恢复退化的椎间盘中的平衡.
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