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Bone Res:仿生双相CAN-PAC水凝胶可用于软骨缺损修复

2017-08-16 MedSci MedSci原创

基于仿生支架的软骨组织工程已成为修复软骨缺陷的一个重要方法。在本研究中,研究人员通过热反应快速交联方法,利用两层之间的密度差制备了用于软骨缺损(OCD)再生的双相CAN-PAC水凝胶。上水凝胶通过CSMA和NIPAm交联,下水凝胶由PECDA,AAm和PEGDA组成。两层之间的界面首先通过葡萄糖酸钙和藻酸盐的物理交联连接,然后在其它组分中进行碳-碳双键的化学交联。上下水凝胶的孔径分别为〜187.4

基于仿生支架的软骨组织工程已成为修复软骨缺陷的一个重要方法。

在本研究中,研究人员通过热反应快速交联方法,利用两层之间的密度差制备了用于软骨缺损(OCD)再生的双相CAN-PAC水凝胶。上水凝胶通过CSMA和NIPAm交联,下水凝胶由PECDA,AAm和PEGDA组成。两层之间的界面首先通过葡萄糖酸钙和藻酸盐的物理交联连接,然后在其它组分中进行碳-碳双键的化学交联。上下水凝胶的孔径分别为〜187.4和〜112.6μm,模量为〜0.065和〜0.261MPa。

这种双层水凝胶的模拟组成、模拟结构和模拟刚度的特征,提供了维持细胞附着和活力的微环境。同时,研究人员还在体内检查了CAN-PAC水凝胶的生物降解性和生物相容性。并建立了兔软骨缺损模型,将双层水凝胶植入了缺损。

总之,该研究显示,双层水凝胶组的再生组织出现了新的半透明软骨和软骨下骨修复,表明水凝胶可以增强软骨缺损的修复。

原始出处:

Jinfeng Liao,1 Taoran Tian, et al., The fabrication of biomimetic biphasic CAN-PAC hydrogel with a seamless interfacial layer applied in osteochondral defect repair. Bone Res. 2017; 5: 17018. Published online 2017 Jul 4. doi:  10.1038/boneres.

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    2018-03-23 apoenzyme
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    2017-08-18 tastas
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    2017-08-18 lfcmxl
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    2017-08-18 hb2008ye

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