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1Department of Surgery, University of Illinois, Chicago, 2Department of Bioengineering, University of Illinois, Chicago
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Adewola, A. F., Wang, Y., Harvat, T., Eddington, D. T., Lee, D., Oberholzer, J. A Multi-Parametric Islet Perifusion System within a Microfluidic Perifusion Device. J. Vis. Exp. (35), e1649, doi:10.3791/1649 (2010).
A. 3层的微流体perifusion装置微细
底部井主协议(150微米深水井)
微通道主协议(500微米深井)
PDMS的解决方案的准备
B.实验装置
代表性的成果
小鼠胰岛perifused 2-25葡萄糖的线性渐变。正如图1所示,钙离子内流和胰岛素分泌被触发后约13分钟的perifusion,对应到6毫米葡萄糖。线粒体电位的变化早些时候预计,在约11分钟。这一数据表明,使用这种微流体网络的优势,胰岛生理特征。

图1。胰岛细胞刺激的生理反应。
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传统的胰岛perifusion系统(宏观和微观)有一定的限制设置和设计,技术要求高,难度在系统中创建的用户指定的化学梯度的复杂。这里描述的微流体perifusion系统克服了这些限制,简单的几何设计和制造。更重要的是,这个系统可以集成与荧光成像方法,提供一个独特的工具来研究胰岛生理。证明该系统具有高信噪比和这些荧光信号的时空分辨率。目前的原型设备,也可以在一个芯片上容纳多个perifusion设置,并提供广泛应用的目的不同类型的微环境。
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这项工作得到了国际奖学金AAUW Adeola Adewola,美国国立卫生研究院/何塞Oberholzer NCRR(U42RR023245),和芝加哥糖尿病项目。
| Name | Company | Catalog Number | Comments |
| 60ml Syringes | BD Biosciences | ||
| Fura-2 fluorescence dye | Molecular Probes, Life Technologies | ||
| Rhodamine123 Fluorescence dye | Molecular Probes, Life Technologies | ||
| Glucose | Sigma-Aldrich | ||
| Bovine Serum Albumin | Sigma-Aldrich | ||
| 30" Silicone tubings | Cole-Parmer | 1/16 x 1/8in | |
| 1.5ml Eppendorf tubes | Fisher Scientific | ||
| Y-connectors | Cole-Parmer | 1/16” & 4mm | |
| Syringe connectors | Cole-Parmer | female luer plug 1/16” | |
| Straight connectors | Cole-Parmer | 1/16” | |
| Elbow connector | Cole-Parmer | 1/16” | |
| Havard syringe pump | Harvard Apparatus | ||
| Perifusion device | |||
| Hot plate | PMC | ||
| Thermometer | Omega Engineering, Inc. | ||
| Fraction collector | Gibson | ||
| Pippettor | Fisher Scientific | ||
| Inverted epiflorescence microscope | Olympus Corporation | IX71 | |
| Charge-coupled device | QImaging | Retiga-SRV, Fast 1394 |