自愈水凝胶
超声波
有效载荷(计算)
动力学
壳聚糖
连接器
化学
生物物理学
生物医学工程
材料科学
计算机科学
有机化学
医学
生物
计算机网络
物理
量子力学
网络数据包
放射科
操作系统
作者
Julien H. Arrizabalaga,Molly Smallcomb,Mohammad Abu‐Laban,Yiming Liu,Tyus J. Yeingst,Aman Dhawan,Julianna C. Simon,Daniel J. Hayes
出处
期刊:ACS applied bio materials
[American Chemical Society]
日期:2022-06-14
卷期号:5 (7): 3212-3218
被引量:8
标识
DOI:10.1021/acsabm.2c00192
摘要
The development of tunable, ultrasound-responsive hydrogels that can deliver protein payload on-demand when exposed to focused ultrasound is described in this study. Reversible Diels–Alder linkers, which undergo a retro reaction when stimulated with ultrasound, were used to cross-link chitosan hydrogels with entrapped FITC-BSA as a model protein therapeutic payload. Two Diels–Alder linkage compositions with large differences in the reverse reaction energy barriers were compared to explore the influence of linker composition on ultrasound response. Selected physicochemical properties of the hydrogel construct, its basic degradation kinetics, and its cytocompatibility were measured with respect to Diels–Alder linkage composition. Focused ultrasound initiated the retro Diels–Alder reaction, controlling the release of the entrapped payload while also allowing for real-time visualization of the ongoing process. Additionally, increasing the focused ultrasound amplitude and time correlated with an increased rate of protein release, indicating stimuli responsive control.
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