用基于可变电荷的SPION释放的特定异电点重建TNF-α,以增强pH敏感的受控释放
Lin Yan1, Yadi Chen2, Shihao Zhang2
1The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523808, China.
Nanomedicine : nanotechnology, biology, and medicine
|June 9, 2024
概括
这项研究开发了新的纳米颗粒,用于瘤亡因子-α (TNF-α) 输送. 这些纳米粒子提供pH敏感的药物释放和增强的抗瘤作用,克服了传统TNF-α疗法的局限性.
科学领域:
- 生物技术是生物技术.
- 纳米医学是一种纳米医学.
- 药物运输 药物运输 药物运输
背景情况:
- 瘤亡因子-α (TNF-α) 的临床使用受到短半衰期,低瘤度和全身毒性的阻碍.
- 开发有针对性的药物输送系统对于提高癌症治疗疗效至关重要.
研究的目的:
- 通过使用改造的纳米粒子,设计一种针对TNF-α的pH敏感的向传递系统.
- 通过优化其特性和纳米粒子结合来增强TNF-α的受控释放和抗瘤活性.
主要方法:
- 构建了重组的S4-TNF-α,并将其与素修饰的超对磁铁氧化物纳米粒子 (S4-TNF-α-SPIONs) 结合起来.
- 调整了S4-TNF-α的同电点 (pI),使其与瘤微环境的pH相匹配.
- 利用静电吸附用于纳米粒子结合,利用pH取决于电荷变化的控制释放.
主要成果:
- S4-TNF-α-SPIONs表现出理想的pH敏感的受控释放特性.
- 与传统方法相比,工程纳米粒子表现出增强的抗瘤效果.
- 该战略成功地改善了转基因药物的受控释放.
结论:
- 调整治疗性多的PI可以增强它们从纳米颗粒中对pH敏感的释放.
- 这种方法为改善癌症治疗药物的向交付和有效性提供了一种新的策略.
- S4-TNF-α-SPIONs代表了先进癌症治疗的有希望的平台.
相关概念视频
Modified-Release Drug Delivery Systems: Stimuli-Activated
177
Stimuli-activated drug delivery systems are designed to release drugs in response to specific physical, chemical, or biological stimuli. These systems often utilize hydrogels—three-dimensional, hydrophilic polymer networks capable of swelling in aqueous environments and retaining significant fluid volumes. Upon exposure to particular stimuli, these hydrogels undergo structural transitions that allow the embedded drug to be released. Due to this adaptive behavior, such systems are also...
177
Modified-Release Drug Delivery Systems: Site-Targeted
164
Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.
164


