Name: a gradient-generating microfluidic device for cell biology
Uploaded: 2007-08-30T00:00:00
Description: Watch this Scientific Journal Video about A Gradient-generating Microfluidic Device for Cell Biology at JoVE.com

<p class="jove_title"> A.梯度产生的微流体装置微细</p><ol><li>硅晶片被视为与活性氧离子（Harrick科学30W，5分钟，NY）。 </li><li>负型光刻胶（SU - 8 50，Microchem，MA）是在一个硅晶片上的1分钟1000转的旋涂。 </li><li>晶圆是软的烤在65 ° C为10分钟，随后在95 ° C为30分钟一个电磁炉。 </li><li>晶圆暴露在紫外线灯（200W），通过一个30微米的最小特征尺寸的透明度面具3分钟。 </li><li>晶圆是出炉后在65 ° C为1分，在95 ° C为10分钟。 </...

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	<li>Jeon, N. L., Baskaran, H., Dertinger, S. K. W., Whitesides, G. M., Van de Water, L., Toner, M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Neutrophil+chemotaxis+in+linear+and+complex+gradients+of+interleukin-8+formed+in+a+microfabricated+device.">Neutrophil chemotaxis in linear and complex gradients of interleukin-8 formed in a microfabricated device.</a> <em style='font-style: italic'>Nat. Biotechnol</em>. <b>20</b>, 826-830 (2002).</li><li>Lin, F., Nguyen, C. M., Wang, S. J., Saadi, W., Gross, S. P., Jeon, N. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effective+neutrophil+chemotaxis+is+strongly+influenced+by+mean+IL-8+concentration.">Effective neutrophil chemotaxis is strongly influenced by mean IL-8 concentration.</a> <em style='font-style: italic'>Biochem. Biophys. Res. Commun</em>. <b>319</b>, 576-581 (2004).</li><li>Chung, B. G., Flanagan, L. A., Rhee, S. W., Schwartz, P. H., Lee, A. P., Monuki, E. S., Jeon, N. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Human+neural+stem+cell+growth+and+differentiation+in+a+gradient-generating+microfluidic+device.">Human neural stem cell growth and differentiation in a gradient-generating microfluidic device.</a> <em style='font-style: italic'>Lab Chip</em>. <b>5</b>, 401-406 (2005).</li><li>Saadi, W., Wang, S. J., Lin, F., Jeon, N. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+parallel-gradient+microfluidic+chamber+for+quantitative+analysis+of+breast+cancer+cell+chemotaxis.">A parallel-gradient microfluidic chamber for quantitative analysis of breast cancer cell chemotaxis.</a> <em style='font-style: italic'>Biomed. Microdevices</em>. <b>8</b>, 109-118 (2007).</li><li>Chung, B. G., Park, J. W., Hu, J. S., Huang, C., Monuki, E. S., Jeon, N. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+hybrid+microfluidic-vacuum+device+for+interfacing+with+conventional+cell+culture+platform.">A hybrid microfluidic-vacuum device for interfacing with conventional cell culture platform.</a> <em style='font-style: italic'>BMC Biotechnol</em>. <b>7</b>, (2007).</li></ol>

<p>细胞暴露于稳定的表皮生长因子的浓度梯度，在向着更高浓度的迁移一个微流体装置。细胞跟踪分析，细胞迁移，趋化指数，细胞迁移运动的方向定位进行了调查。因此，该梯度产生的微流体平台可用于研究癌细胞转移，胚胎发育和轴突导向。 </p>

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		<th>Material Name</th>
		<th>Type</th>
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		<th>Catalogue Number</th>
		<th>Comment</th>
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<td>Dextran-FITC</td>
<td>Reagent</td>
<td>Sigma Aldrich</td>
<td>FD10S </td>
<td>Fluorescein isothiocyanate (FITC) conjugated-dextran (10kD)</td>
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<td>hr-EGF</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>13247-051 </td>
<td>human recombinant Epidermal growth factor </td>
</tr>
<tr>
<td>PDMS</td>
<td>&nbsp;</td>
<td>K.R. Anderson Co. Inc.</td>
<td>2065622  </td>
<td>Poly(dimethylsiloxane) (PDMS), Dow Corning Sylgard 184 (8.6 lb)</td>
</tr>
<tr>
<td>Negative photoresist </td>
<td>&nbsp;</td>
<td>Microchem</td>
<td>SU-8 50</td>
<td>&nbsp;</td>
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<td>Si wafer</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>silicone wafer, 4 inch</td>
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<td>Petri dishes</td>
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<td>&nbsp;</td>
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<td>Polyethylene tubing </td>
<td>&nbsp;</td>
<td>Becton Dickinon</td>
<td>PE 20</td>
<td>&nbsp;</td>
<tr>
<td>PBS</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
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<td>Fibronectin</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
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<td>NIH 3T3 </td>
<td>cell-line</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>fibroblast cells</td>
</tr>
<tr>
<td>Inverted microscope</td>
<td>&nbsp;</td>
<td>Nikon </td>
<td>TE 2000</td>
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a gradient-generating microfluidic device for cell biology

<p class="jove_content">的制造和研究细胞行为的一个梯度产生的微流体装置的操作说明。微流体平台是一个有利的实验工具，因为它可以精确地操纵流体流动，使高通量的实验，并产生稳定的水溶性的浓度梯度。相比传统的梯度发生器，聚二甲基硅氧烷（PDMS）的基于微流体装置，可以产生生长因子具有良好定义的配置文件稳定的浓度梯度。在这里，我们开发了三个独立的进气口简单的梯度产生的微流体装置。三微合并成一个微产生浓度梯度。 isothyiocyanate荧光素（FITC）-葡聚糖的分子量类似表皮生长因子（EGF），生长因子梯度的稳定和形状被证实。我们表明，使用这种微流体装置，暴露表皮生长因子的浓度梯度成纤维细胞对高浓度的迁移。细胞迁移和细胞迁移运动的方向定位，定量评估细胞跟踪分析。因此，该梯度产生的微流体装置，可能是有益的研究和分析细胞迁移的行为。</p>

Watch this Scientific Journal Video about A Gradient-generating Microfluidic Device for Cell Biology at JoVE.com

A Gradient-generating Microfluidic Device for Cell Biology

<p class="jove_content">我们描述了一个协议梯度产生的微流体装置，可以产生良好定义的微环境中的空间和时间的梯度微细。在这种方法中，梯度产生的微流体装置可用于研究细胞定向迁移，胚胎发育，伤口愈合，癌症转移。</p>

一个渐变产生的微流体装置，细胞生物学

 The fabrication and operation of a gradient-generating microfluidic device for studying cellular behavior is described.  A microfluidic platform is an ...

Research

JoVE Journal

Biology

Fabrication of a Microfluidic Device for the Compartmentalization of Neuron Soma and Axons

条块索玛的神经元和轴突的一个微流体设备制造

In this video, we demonstrate the technique of soft lithography with polydimethyl siloxane (PDMS) which we use to fabricate a microfluidic device for ...

科研

生物学

A Microfluidic Device with Groove Patterns for Studying Cellular Behavior

微流体装置与Groove的模式，为研究细胞行为

We describe a microfluidic device with microgrooved patterns for studying cellular behavior.  This microfluidic platform consists of a top fluidic channel ...

Brain Slice Stimulation Using a Microfluidic Network and Standard Perfusion Chamber

脑片的刺激，利用微流控网络和标准灌注腔

We have demonstrated the fabrication of a two-level microfluidic device that can be easily integrated with existing electrophysiology setups. The ...

Preparing E18 Cortical Rat Neurons for Compartmentalization in a Microfluidic Device

准备在微流体装置E18条块皮质大鼠神经元

In this video, we demonstrate the preparation of E18 cortical rat neurons. E18 cortical rat neurons are obtained from E18 fetal rat cortex previously ...

Micro-scale Engineering for Cell Biology

细胞生物学的微观尺度工程

Cell Capture Using a Microfluidic Device

细胞捕获使用一个微流体装置

Non-plasma Bonding of PDMS for Inexpensive Fabrication of Microfluidic Devices

PDMS微流体装置的廉价制造的非等离子键合

In this video, we demonstrate how to use the neuron microfluidic device without plasma bonding.  In some cases it may be desirable to reversibly bond ...

Assessing Neural Stem Cell Motility Using an Agarose Gel-based Microfluidic Device

使用琼脂糖凝胶为基础的微流体装置的评估神经干细胞的运动

While microfluidic technology is reaching a new level of maturity for macromolecular assays, cell-based assays are still at an infant stage1. This is ...

Microcontact Printing of Proteins for Cell Biology

微接触印刷的蛋白细胞生物学

The ability to pattern proteins and other biomolecules onto substrates is important for capturing the spatial complexity of the extracellular environment. ...

The Microfluidic Probe: Operation and Use for Localized Surface Processing

微探针：操作和使用的局部表面处理

Microfluidic devices allow assays to be performed using minute amounts of sample and have recently been used to control the microenvironment of cells. ...