合体凝具有分阶段封存和释放的分子经历竞争性结合
Yuhang Huang1, Nashmia Zia2, Yingshan Ma2
1Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto M5S 3E5, Canada.
ACS nano
|September 6, 2024
概括
这项研究引入了一种具有双孔大小的新型体水凝,用于控制分子交换. 这种设计能够分阶段清理和释放,显示出双重的抗炎和组织增殖效应.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
背景情况:
- 水凝促进动态分子交换,但控制封存和释放率对于增强功能至关重要.
- 水凝内的竞争性结合影响了分子交换动态,影响了目标应用.
- 目前的水凝设计往往缺乏对多重结合分子的扩散速率的精确控制.
研究的目的:
- 设计一种能够分阶段,扩散控制的清理和释放分子,具有竞争性结合的合体水凝.
- 研究不同孔隙尺寸对CpG寡氧核酸 (ODN) 和人类表皮生长因子 (hEGF) 不同释放动力学的影响.
- 为了证明水凝在抗炎和组织增殖应用中的双重功能.
主要方法:
- 制造一种具有两种不同的孔径 (亚微米和纳米) 的合水凝.
- 对CpG ODN和hEGF的竞争性结合和分阶段释放动态的实验性评估.
- 使用模拟结果来验证分子扩散和交换的实验观测.
主要成果:
- 水凝展示了分阶段的清理和释放,通过亚微米孔径快速吸收CpG寡氧核酸 (ODN).
- 观察到人类表皮生长因子 (hEGF) 的延迟释放,由通过纳米尺寸毛孔的扩散控制.
- 实验结果与模拟数据一致,证实了扩散控制的分阶交换机制.
结论:
- 设计的合体水凝有效地控制分子交换通过分阶段扩散基于孔径大小.
- 这种分阶段的交换策略可以同时实现抗炎和组织增殖功能,突出其治疗潜力.
- 双孔水凝为先进的药物输送和再生医学应用提供了一个有前途的平台.
相关概念视频
01:19Modified-Release Drug Delivery Systems: Rate-Programmed II
137
Rate-programmed drug delivery systems release drugs in a controlled manner to maintain therapeutic levels. Three main designs include reservoir, matrix, and hybrid systems.Reservoir systems consist of a drug core enclosed within a membrane that controls drug release. In non-swelling reservoir systems, polymers like ethyl cellulose or polymethacrylates are used. These do not hydrate in aqueous media and control release through membrane thickness, porosity, or insolubility. This type includes...
137
01:30Modified-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