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可编程生物降解的光交联聚 ((三甲烯碳酸) 弹性体通过竞争性的烯基基因化学点击

Lihuang Wu¹, Tingting Zhao¹, Junhua Li¹

¹Research Institute for Biomaterials, Tech Institute for Advanced Materials, Bioinspired Biomedical Materials & Devices Center, College of Materials Science and Engineering, Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Suqian Advanced Materials Industry Technology Innovation Center, Nanjing Tech University, Nanjing 211816, China.

Biomacromolecules

|November 23, 2025

概括

研究人员开发了一种新方法来控制可再吸收植入物的交联聚二甲基碳酸 (PTMC) 弹性体的降解. 这种技术允许可调节的生物降解率,提高可预测的临床性能.

科学领域:

生物材料科学生物材料科学
聚合物化学聚合物化学
再生医学是一种再生医学.

背景情况:

交联聚二甲基碳酸 (PTMC) 弹性体对柔软,可再吸收的植入物具有前景.
目前的PTMC弹性体有缓慢和无法控制的降解,阻碍了可预测的临床结果.
在PTMC弹性体中实现结构完整性和受控生物降解仍然是一个挑战.

研究的目的:

开发一种制造具有可调节降解率和结构完整性的PTMC弹性体的方法.
解决目前基于PTMC的可再吸收植入物的降解控制方面的局限性.
为具有可编程再吸收时间表的PTMC设备建立一个平台.

主要方法:

合成的甲基酸终结PTMC寡合体,具有不同程度的聚合.
在1,6-hexanedithiol (HDT) 存在下通过乙烯点击化学使用光交联.
使用HDT作为一个竞争的交叉链接器,以系统地放松激素聚合网络.

主要成果:

在体外和体内都实现了PTMC弹性体的线性表面侵蚀.
通过调整 HDT 内容,通过一个数量级来证明可调节的降解率.
保持了卓越的尺寸稳定性,并实现了与中等分子量线性PTMC可比的降解水平.

结论:

在光交叉连接中,一个补充的乙烯点击化学竞争策略能够精确控制PTMC弹性体交叉连接密度和降解.
这种方法为具有可编程再吸收的植入式光交联PTMC设备提供了一个实用的平台.
扩大了定制药物输送仓库和机械匹配的可再吸收设备的机会.

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