具有层次键的凝使可调节的应力放松能够直接引导巨细胞驱动的免疫调节
Xiaoman Han1, Xueying Yang1, Ruifeng Zhang1
1MOE Key Laboratory of Bio-Intelligent Manufacturing, Dalian Key Laboratory of Artificial Organ and Regenerative Medicine, School of Bioengineering, School of Biomedical Engineering, Medical Department of Dalian University of Technology, Dalian 116024, , PR China.
细胞外矩阵的粘弹性会影响巨细胞的炎症反应. 较慢的压力放松促进了亲炎性M1两极分化,而较快的放松则有利于抗炎M2表型.
科学领域:
- 生物材料科学 生物材料科学
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 细胞外基质 (ECM) 对组织力学和细胞功能至关重要.
- ECM粘弹性显著影响细胞行为,但其对巨细胞和炎症的影响还未得到充分研究.
- 一个关键的挑战是缺乏具有可独立调节的粘性弹性生物材料.
研究的目的:
- 开发具有可控制粘性弹性的ECM模仿水凝.
- 研究矩阵粘弹性的对巨细胞两极分化和炎症反应的影响.
- 探索体内对具有不同粘弹性质的水凝的免疫反应.
主要方法:
- 使用烯胺 (AM) 和N-烯糖胺 (NAGA) 单体合成了可光聚合的水凝.
- 层次化的键 (H-bond) 设计允许调整应力放松率,同时保持恒定的弹性.
- 在小鼠模型中评估了巨细胞两极分化和体内炎症反应.
主要成果:
- 通过改变AM (单一H键) 和NAGA (双H键) 单体的比率来调节水凝粘性.
- 缓慢的压力放松诱导了促炎性M1巨细胞两极分化.
- 较快的压力放松促进了抗炎M2巨分化,观察到类似的体内免疫反应.
结论:
- 矩阵粘弹性显著影响巨细胞两极分化和炎症反应.
- 在水凝中调节的应力放松率可以直接指导巨细胞的表型.
- 这项研究为设计具有受控免疫调节特性的可植入生物材料提供了洞察力.
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