Akcay Gulden, Luttge Regina
Neuro-Nanoscale Engineering, Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands.
Institute for Complex Molecular Systems (ICMS), Eindhoven University of Technology, Eindhoven, 5600 MB, The Netherlands.
Sci Rep. 2025 Aug 13;15(1):29631. doi: 10.1038/s41598-025-14187-6.
Brain tissue orchestrates neuronal function through biochemical and mechanical cues. Utilizing in vitro modeling, often the dynamics of mechanical aspects in neuronal cell cultures is neglected. However, the growing recognition of the importance of mechanical cues in neural development and healthy brain function necessitates a shift in how we study cultured neurons. Microfluidic platforms, like a Brain-on-Chip (BoC), can take active mechanical stimuli into account. In our BoC design a set of microchannels manufactured in a glass substrate by FEMTOprint technology is assembled with a spin-coated polydimethylsiloxane (PDMS) membrane and a PDMS culture chamber, which was fabricated from a stereolithographically made mold by replication. The membrane can locally deform across the culture chamber by air pressure. This paper describes the design, fabrication and test of such a novel BoC, offering an experimental setting in which we demonstrated mechano-dynamic elevated Calcium signaling in cultured human induced neural stem cell-derived neuronal networks.
脑组织通过生化和机械信号协调神经元功能。在体外建模中,神经元细胞培养中机械方面的动态变化常常被忽视。然而,随着人们越来越认识到机械信号在神经发育和健康脑功能中的重要性,我们研究培养神经元的方式需要转变。微流控平台,如芯片大脑(BoC),可以考虑主动机械刺激。在我们的BoC设计中,一组通过飞秒打印技术在玻璃基板上制造的微通道与旋涂聚二甲基硅氧烷(PDMS)膜和PDMS培养室组装在一起,该培养室是通过复制立体光刻制作的模具制造的。该膜可通过气压在培养室中局部变形。本文描述了这种新型BoC的设计、制造和测试,提供了一个实验环境,我们在其中展示了培养的人诱导神经干细胞衍生的神经元网络中机械动态升高的钙信号。
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