芯片上的牙用于设计早期的牙上皮质-介质细胞相互作用
C Huang1,2, F Sanaei1, W Zhang3
1Department of Dentistry - Regenerative Biomaterials, Research Institute for Medical Innovation, Radboud University Medical Center, Philips van Leijdenlaan 25, 6525 EX, Nijmegen, the Netherlands.
Materials today. Bio
|November 10, 2025
概括
研究人员开发了一种新的"芯片上的牙",以模仿牙发育. 这种微工程设备使牙上皮细胞 (DE) 和牙介质细胞 (DM) 之间的受控相互作用成为可能,从而推进了牙面膜再生策略.
科学领域:
- 生物材料工程 生物材料工程
- 发展生物学 发展生物学
- 再生医学是一种再生医学.
背景情况:
- 牙面膜的再生受到牙喷发前形成牙面膜的乳腺细胞的损失的阻碍.
- 现有的体外模型缺乏对牙上皮 (DE) 和牙介质 (DM) 细胞相互作用和介质条件的精确控制.
- 有效的牙面膜再生需要回顾对牙形态发生至关重要的DE-DM相互作用.
研究的目的:
- 开发一个微工程"芯片上的牙"平台,用于控制DE-DM交互.
- 为了创建一个双介质的微环境,独立地透血统特定的媒体.
- 建立一个模型来研究早期的牙生成和乳腺生成,以改善牙的再生.
主要方法:
- 使用3D打印和软光刻法制造一个三通道聚二甲基 (PDMS) 装置.
- 在纤维素水凝中播种牙介质细胞 (DM),然后连续播种牙上皮细胞 (DE).
- 使用定量PCR (qPCR),免疫光,阿利沙林红色染色,分析和SEM进行分析.
主要成果:
- DM细胞形成了类似乳头的核心和分泌的原蛋白,为DE细胞创造了一个利基.
- 观察到DM细胞中的牙标记的逐渐上调和DE细胞中的乳腺细胞分化 (AMELX表达).
- 在工程DE-DM接口上证实了空间限制的矿物化.
结论:
- 这种"牙在芯片上"的平台成功地汇总了早期牙生成和乳腺生成的关键方面.
- 这种可控制的双介质微环境为剖析牙发育提供了多功能工具.
- 该平台为加速真正的质再生策略提供了基础.
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