Name: improved method for the preparation of a human cell-based, contact model of the blood-brain barrier
Uploaded: 2013-11-12T18:45:00
Description: Watch this Scientific Journal Video about Improved Method for the Preparation of a Human Cell-based, Contact Model of the Blood-Brain Barrier at JoVE.com

这项研究是由赠款，以RLM从澳大利亚国家健康和医学研究委员会（赠款＃606658）。

1。细胞培养（3-7天之前至BBB大会） 1.1。小学的人脑微血管内皮细胞（建筑物能源效益守则） 建筑物能源效益守则分别购得。细胞通过正常人类脑皮质组织的分散酶分解所产生并提供冻结在通道3（&lt;12个群体倍增）。 <ol><li> 基质 ：大衣组织培养器皿“附件因子”按照制造商的说明。 </li><li> 电池保养 ：保持在含血清的完全培养基的BEC。对?...

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Anim. 39 (2003), 313-320 (2003).</li><li>Steiner, O., Coisne, C., Engelhardt, B., Lyck, R. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Comparison+of+immortalized+bEnd5+and+primary+mouse+brain+microvascular+endothelial+cells+as+in+vitro+blood-brain+barrier+models+for+the+study+of+T+cell+extravasation.">Comparison of immortalized bEnd5 and primary mouse brain microvascular endothelial cells as in vitro blood-brain barrier models for the study of T cell extravasation.</a> J. Cereb. Blood Flow Metab. 31, 315-327 (2011).</li></ol>

医学研究脑病变遭受多大的平移难度。在急性缺血性中风的区域，例如，许多药物，在动物模型中表现出极大的承诺未能在诊所38,39。的原因，这些令人失望的结果是多种多样的，包括临床前测试系统的不忠的人中风的情况，并从动物研究21获得的结果夸大。一个策略，以提高临床前研究结果的预测价值临床阶段的额外开发基于人体细胞的体外模型，这些可以提...

血脑屏障是末梢血液循环和中枢神经系统中，关键的是负责大脑止血的维护之间的专用接口。它包括不同的脑微血管内皮细胞（的BEC）这是由几个细胞和非细胞成分（见下文）在功能上的影响，以形成一个紧凑的和动态的网关到大脑。在生理条件下是BBB限制血细胞，血浆成分和有害物质，所有潜在的神经毒性的通道，进入大脑。平行地，血脑屏障选择性交换密钥离子和营养物（葡萄糖和氨基酸）和代谢废物的大脑和循环之间精确地保持大脑环境1,2。近年来它是日益明显的是，血脑屏障的破坏发生在各种慢性脑病变，如神经变性或炎症有关的疾病（ 如阿尔茨海默氏病和含多处Ë硬化，分 ​​别）3，以及在像缺血性中风急性4条件。 脑内皮细胞（的BEC）的独特属性血脑屏障通过脑环境5在很大程度上引起，特别是由星形胶质细胞6,7。有越来越多的了解，其它细胞类型，例如周细胞8，神经元和神经胶质细胞的1,3，以及基底膜9，支持的BEC和一起形成一个功能单元被称为“神经血管单元”（NVU），它同时夫妻神经元代谢需要它们的供应毛细血管10。 血脑屏障在病理情况下参与的基础无数次尝试开发体外 BBB模型，以协助BBB相关的研究11,12。这些模型的目标是模仿尽可能接近体内血脑屏障的特性根据NVU原理。 体外 </em&gt;的BBB模型通常依赖于紧密连接形成的BEC的单层（主要从牛13，人14大鼠15，鼠标器16，和猪17,18起点），在多孔膜上培养连同支持星形胶质细胞（广泛由德利等人，2005年11审阅）。 星形胶质细胞可在非接触条件下生长的组织培养孔的底部，通过用的BEC通过可溶性因子16的培养基还从通信的BEC（栽培在膜的上表面）分离。在更先进的模型的更好类似于血脑屏障的体内的解剖结构，星形胶质细胞被保持在接触的条件和直接邻近的BEC 13,15,17（ 图1）在膜的另一侧进行培养。这种配置使建筑物能源效益守则和星形胶质细胞之间的身体接触，成立时星形胶质细胞项目通过多孔膜的工序。重要的是，对于发生的真实接触的孔隙应≥1μm的直径，由于星形细胞的最终尺不能穿过较小的孔径（ 即 0.4微米）14,15。值得注意的是，接触BBB系统中演示了一些研究要优于他们对他们的跨内皮细胞电阻（TEER）和各种示踪剂13,17,18的内皮通透性值非接触的同行。媒体流的另外一个维度在一些体外 BBB模型剪力适用于内皮细胞为脑血管12,19的接近模拟最近添 ​​加。 一个技术障碍产生接触BBB模型时，克服星形胶质细胞是克服重力在多孔膜的腔外表面的播种。上一页协议13,20，其中星形胶质细胞被简单地播种在媒体上的顶部下降verted插入，只允许短的播种时间（ 即 10分钟，13或2小时20）被发现在我们的手中是不够正常细胞附着。使用这种基本的方法，较长的星形胶质细胞实习期间需要不断的监测插件被频繁打开培养箱的（导致温度，pH值和湿度的波动），也容易出现不均匀的细胞种植由于通过小孔漏的媒体，尤其是如果毛孔大于1μm就业。 在这里，我们描述了一个通用协议，用于制备接触血脑屏障模型。我们的程序包括用于在反相插入，即解决了上面提到的限制细胞接种另一种方法。该方法允许星形胶质细胞的原状附着到腔外表面的膜，在平衡培养箱，对于延长的时间周期。作为一个结果，星形细胞的均匀播种实现这增加屏障质量并最大限度地减少刀片之间的基底透气性的变化。 由于使用人类细胞是人类有关的研究21重要的是，我们另外在这篇文章中展示出一种新颖的首要人权的BEC相结合的具体运用和永生化人星形胶质细胞的建立接触人体血脑屏障模型的高通量筛选能力。由于观察细胞在多孔膜是很困难的，我们也详细的染色技术，可协助合流的决心和细胞形态的多孔膜。最后，我们举例说明如何我们人类血脑屏障模型可以被用来研究组织型纤溶酶原激活剂（T-PA）的影响 - 一个血块破坏酶可作为急性缺血性中风的唯一的治疗选择 - 对血脑屏障。

<table border="0" cellpadding="0" cellspacing="0" width="863">
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		<col />
		<col />
		<col />
	</colgroup>
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Attachment Factor</td>
			<td style="width:193px;">Cell-Systems Corporation</td>
			<td style="width:171px;">4Z0-210</td>
			<td style="width:243px;"></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:257px;">Brain microvascular endothelial cells (BECs), primary, human</td>
			<td style="width:193px;">Cell-Systems Corporation</td>
			<td style="width:171px;">ACBRI 376</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Complete medium</td>
			<td style="width:193px;">Cell-Systems Corporation</td>
			<td style="width:171px;">4Z0-500</td>
			<td style="width:243px;">Supplemented with CSC JetFuel</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:257px;">Complete serum-free medium</td>
			<td style="width:193px;">Cell-Systems Corporation</td>
			<td style="width:171px;">SF-4Z0-500</td>
			<td style="width:243px;">Supplemented with CSC RocketFue</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">DMEM/F-12 with 15 mM HEPES</td>
			<td style="width:193px;">Life Technologies</td>
			<td style="width:171px;">11330-032</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:257px;">Endothelial cells growth supplement (from bovine origin)</td>
			<td style="width:193px;">Sigma-Aldrich</td>
			<td style="width:171px;">E2759-15MG</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:257px;">External silicone tubing</td>
			<td style="width:193px;">Watson-Marlow</td>
			<td style="width:171px;">913.A080.016</td>
			<td style="width:243px;">Pumpsil brand, 8 mm internal diameter, 1.6 mm wall</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Foetal calf serum</td>
			<td style="width:193px;">Lonza</td>
			<td style="width:171px;">14-501F</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Gentamycin sulfate</td>
			<td style="width:193px;">Life Technologies</td>
			<td style="width:171px;">15750-060</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Heparin sodium</td>
			<td style="width:193px;">Pfizer</td>
			<td style="width:171px;"></td>
			<td style="width:243px;">1,000 U/ml</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Hexamethyldisilazane (HMDS)</td>
			<td style="width:193px;">Sigma-Aldrich</td>
			<td style="width:171px;">H4875</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:257px;">Human brain microvascular endothelial cells</td>
			<td style="width:193px;">Cell-Systems Corporation</td>
			<td style="width:171px;">ACBRI 376</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Internal silicone tubing</td>
			<td style="width:193px;">Watson-Marlow</td>
			<td style="width:171px;">913.A032.016</td>
			<td style="width:243px;">Pumpsil brand, 3.2 mm internal diameter, 1.6 mm wall</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">L-Glutamine</td>
			<td style="width:193px;">Life Technologies</td>
			<td style="width:171px;">25030</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Mayer&#8217;s hematoxylin solution</td>
			<td style="width:193px;">Amber Scientific</td>
			<td style="width:171px;">MH</td>
			<td></td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:257px;">Minimum essential medium with Earle&#8217;s balanced salt solution</td>
			<td style="width:193px;">HyClone Laboratories</td>
			<td style="width:171px;">SH30244.01</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Penicillin/Streptomycin</td>
			<td style="width:193px;">Life Technologies</td>
			<td style="width:171px;">15140</td>
			<td></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:257px;">Rat collagen I</td>
			<td style="width:193px;">Trevigen</td>
			<td style="width:171px;">3440-100-01</td>
			<td style="width:243px;">Cultrex brand</td>
		</tr>
		<tr height="63">
			<td height="63" style="height:63px;width:257px;">Tissue culture inserts</td>
			<td style="width:193px;">Corning Life Sciences</td>
			<td style="width:171px;">3472</td>
			<td style="width:243px;">Transwell brand, 6.5 mm in diameter, with polyester porous membrane, 3 &#181;m pore-size</td>
		</tr>
	</tbody>
</table>

improved method for the preparation of a human cell-based, contact model of the blood-brain barrier

血 - 脑屏障（BBB）包括不可渗透的，但适应性脑毛细血管紧紧控制大脑环境。血脑屏障的破坏已经隐含在许多脑病变的病因，这就需要对人类的发展在体外 BBB模型，以协助临床相关研究。之间迄今所描述的众多BBB模型，静态（无流量），与血脑屏障模型，其中星形胶质细胞和脑血管内皮细胞（的BEC）的共培养在多孔膜的相对侧上，成为一种简单但真实的系统来模拟BBB与高通量筛选能力。然而这种模式的产生提出了一些技术上的挑战。在这里，我们描述了一个协议，用于制备一种利用一种新型的初级人类的BEC和永生化星形胶质细胞的组合接触人体血脑屏障模型。具体来说，我们为细节上的倒插入细胞播种一种创新的方法以及指定插入背板T染色技术和体现我们如何使用我们的模型为BBB-的相关研究。

为了建立一个人，接触BBB模型，我们不得不培养于多孔膜SVGs和的BEC具有3微米的孔隙大小，显示允许的星形胶质细胞的最终英尺通道，用于与内皮细胞14,15,27,28接触。完整的接触模型的示意图如图1（左图）。通过接触系统呈现的主要技术挑战是需要的种子的星形胶质细胞对抗重力在膜腔外表面。我们已通过主要产生一个可移动的硅氧烷以及在近腔膜表面的顶部上，同时防止介?...

Watch this Scientific Journal Video about Improved Method for the Preparation of a Human Cell-based, Contact Model of the Blood-Brain Barrier at JoVE.com

Improved Method for the Preparation of a Human Cell-based, Contact Model of the Blood-Brain Barrier

成立血脑屏障（BBB）人体模型的受益研究与BBB级故障相关的大脑条件。我们在这里描述的改进的技术，用于制备接触BBB模型，它允许在多孔膜的相对侧上的人星形胶质细胞和脑血管内皮细胞的共培养的。

改进方法对血脑屏障的人体细胞为主，接触模型的制备

The blood-brain barrier (BBB) comprises impermeable but adaptable brain capillaries which tightly control the brain environment. Failure of the BBB has ...

Research

JoVE Journal

Bioengineering

Constant Pressure-controlled Extrusion Method for the Preparation of Nano-sized Lipid Vesicles

恒压控制的挤压方法制备纳米脂质体

Liposomes are artificially prepared vesicles consisting of natural and synthetic phospholipids that are widely used as a cell membrane mimicking platform ...

科研

生物工程

An Improved Method for the Preparation of Type I Collagen From Skin

对于I型胶原蛋白的制备皮肤方法的改进

Soluble type 1 collagen (COL1) is used extensively as an adhesive substrate for cell cultures and as a cellular scaffold for regenerative applications. ...

Development of a Multicellular Three-dimensional Organotypic Model of the Human Intestinal Mucosa Grown Under Microgravity

生长在微重力人体肠道黏膜的多细胞三维器官模型的建立

Because cells growing in a three-dimensional (3-D) environment have the potential to bridge many gaps of cell cultivation in 2-D environments (e.g., ...

In Vitro Permeation of FITC-loaded Ferritins Across a Rat Blood-brain Barrier: a Model to Study the Delivery of Nanoformulated Molecules

In Vitro Permeation of FITC-loaded Ferritins Across a Rat Blood-brain Barrier: a Model to Study the Delivery of Nanoformulated Molecules

跨越大鼠血脑屏障FITC加载铁蛋白体外渗透：一个模型来研究Nanoformulated分子的交付

Brain microvascular endothelial cells, supported by pericytes and astrocytes endfeet, are responsible for the low permeation of large hydrosoluble drugs ...

Lucifer Yellow - A Robust Paracellular Permeability Marker in a Cell Model of the Human Blood-brain Barrier

路西法黄 - 人类血脑屏障细胞模型中一个健壮的细胞渗透标记

The blood-brain barrier BBB consists of endothelial cells that form a barrier between the systemic circulation and the brain to prevent the exchange of ...

Simultaneous Quantification of Selected Kynurenines Analyzed by Liquid Chromatography-Mass Spectrometry in Medium Collected from Cancer Cell Cultures

从癌细胞培养物中收集的介质光谱分析的选定金核素的同步量化

The kynurenine pathway and the tryptophan catabolites called kynurenines have received increased attention for their involvement in immune regulation and ...

Transplantation of a 3D Bioprinted Patch in a Murine Model of Myocardial Infarction

心肌梗塞穆林模型中的 3D 生物打印贴片移植

Testing regenerative properties of 3D bioprinted cardiac patches in vivo using murine models of heart failure via permanent left anterior descending (LAD) ...

Disruption of the Blood-Spinal Cord Barrier Using Low-Intensity Focused Ultrasound in a Rat Model

在大鼠模型中使用低强度聚焦超声破坏血脊髓屏障

Low-intensity focused ultrasound (LIFU) uses ultrasonic pulsations at lower intensities than ultrasound and is being tested as a reversible and precise ...

A Novel Minimally Invasive Slow Injection Method for Reducing Tissue Injury

A Novel Cell Injection Method with Minimum Invasion

A Novel Cell Injection Method with Minimum Invasion (Video) | JoVE 

一种侵袭性最小的新型细胞注射方法

Directly injecting cells into tissues is a necessary process in cell administration and/or replacement therapy. The cell injection requires a sufficient ...