Name: real-time imaging of leukotriene b4 mediated cell migration and blt1 interactions with &beta;-arrestin
Uploaded: 2010-12-23T15:00:00
Description: Watch this Scientific Journal Video about Real-time Imaging of Leukotriene B4 Mediated Cell Migration and BLT1 Interactions with ÃŽÂ²-arrestin at JoVE.com

这项研究是由美国国立卫生赠款AI - 52381，CA138623和肯塔基州的肺癌研究委员会和机构支持从格雷厄姆詹姆斯布朗癌症中心的支持。

方法显微镜的说明活细胞成像实验用的TE - FM系统连接到尼康的Eclipse TE300倒置显微镜落射荧光。显微镜配备加热阶段。一个凉爽的总部管理单元数字B / W CCD（罗伯科学）相机和LAMDA 10-2光学过滤器更换（萨特仪器公司）是连接到显微镜。激发和发射波长控制滤光轮和兰巴10-2滤光轮控制器控制仪器有限公司，萨特曝光时间为500 ms应该足够，以查看RFP或GFP在活细胞...

<ol>
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R., Haribabu, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Leukotrienes+and+atherosclerosis:+new+roles+for+old+mediators.">Leukotrienes and atherosclerosis: new roles for old mediators.</a> Trends Immunol. 25, 315-322 (2004).</li><li>Heller, E. 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H., Del Prete, A., Bock, C. B., Haribabu, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Targeted+disruption+of+leukotriene+B4+receptors+BLT1+and+BLT2:+a+critical+role+for+BLT1+in+collagen-induced+arthritis+in+mice.">Targeted disruption of leukotriene B4 receptors BLT1 and BLT2: a critical role for BLT1 in collagen-induced arthritis in mice.</a> J Immunol. 176, 6254-6261 (2006).</li><li>Kim, N. D., Chou, R. C., Seung, E., Tager, A. M., Luster, A. D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+unique+requirement+for+the+leukotriene+B4+receptor+BLT1+for+neutrophil+recruitment+in+inflammatory+arthritis.">A unique requirement for the leukotriene B4 receptor BLT1 for neutrophil recruitment in inflammatory arthritis.</a> J Exp Med. 203, 829-835 (2006).</li><li>Jala, V. R., Shao, W. H., Haribabu, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Phosphorylation-independent+beta-arrestin+translocation+and+internalization+of+leukotriene+B4+receptors.">Phosphorylation-independent beta-arrestin translocation and internalization of leukotriene B4 receptors.</a> J Biol Chem. 280, 4880-4887 (2005).</li><li>Jala, V. R., Haribabu, B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Real-time+analysis+of+G+protein-coupled+receptor+signaling+in+live+cells.">Real-time analysis of G protein-coupled receptor signaling in live cells.</a> Methods Mol Biol. 332, 159-165 (2006).</li><li>Del Prete, A., A, . <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Regulation+of+dendritic+cell+migration+and+adaptive+immune+response+by+leukotriene+B4+receptors:+a+role+for+LTB4+in+up-regulation+of+CCR7+expression+and+function.">Regulation of dendritic cell migration and adaptive immune response by leukotriene B4 receptors: a role for LTB4 in up-regulation of CCR7 expression and function.</a> Blood. 109, 626-631 (2007).</li><li>Salogni, L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Activin+A+induces+dendritic+cell+migration+through+the+polarized+release+of+CXC+chemokine+ligands+12+and+14.">Activin A induces dendritic cell migration through the polarized release of CXC chemokine ligands 12 and 14.</a> Blood. 113, 5848-5856 (2009).</li><li>Boudreau, J., Koshy, S., Cummings, D., Wan, Y. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Culture+of+myeloid+dendritic+cells+from+bone+marrow+precursors.">Culture of myeloid dendritic cells from bone marrow precursors.</a> J Vis Exp. , (2008).</li></ol>

活细胞成像是一个强大的工具，表现出特定的蛋白质的功能和互动，因为他们在实时发生。在这个手稿中描述的方法，清楚地表明，LTB 4能诱导树突状细胞的快速迁移。这些方法不仅扩大LTB 4个功能多样的细胞类型方面，它们允许类似的方法被应用到其他各种趋化因子和测试他们在不同的白细胞分人口趋化剂的功效。在这个系统中的荧光成像，可以实时监测的信号事件。此外，这?...

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		<div>
		<table border="1">
		<thead>
		<tr>
		<th>Material Name</th>
		<th>Type</th>
		<th>Company</th>
		<th>Catalogue Number</th>
		<th>Comment</th>
		</tr>
		</thead>
		<tbody>
		
<tr>
<td>Cell lines:</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Rat Basophilic Leukomia Cell line (RBL-2H3) or HEK293 cells.</td>
<td>&nbsp;</td>
<td>ATCC</td>
<td>CRL-2256</td>
<td>&nbsp;</td>
<tr>
<td>Media:</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Delbecco's modified Eagle&#x2019;s Medium (DMEM)</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>11995</td>
<td>&nbsp;</td>
<tr>
<td>Phenol red free RPMI or DMEM</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>11835-030</td>
<td>&nbsp;</td>
<tr>
<td>Fetal Bovine Serum</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>16000-044</td>
<td>&nbsp;</td>
<tr>
<td>L-Glutamine (200 mM)</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>25030</td>
<td>&nbsp;</td>
<tr>
<td>Penicillin-streptomycin (10000 U/mL)</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>15140</td>
<td>&nbsp;</td>
<tr>
<td>Trypsin, 0.05% (1X) with EDTA 4Na, liquid</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>25300</td>
<td>&nbsp;</td>
<tr>
<td>HEPES (1M)</td>
<td>&nbsp;</td>
<td>Invitrogen</td>
<td>15630</td>
<td>&nbsp;</td>
<tr>
<td>Others:</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>35 mm sterile glass coverslip-bottomed Fluoro dishes (0.17 mm thick) (WillCo-dish)</td>
<td>&nbsp;</td>
<td>WPI</td>
<td>FD35-100</td>
<td>&nbsp;</td>
<tr>
<td>Sterile Gene Pulser Cuvette (0.4 cm electrode gap) (Bio-Rad)</td>
<td>&nbsp;</td>
<td>Bio-Rad</td>
<td>16552088</td>
<td>&nbsp;</td>
<tr>
<td>Instruments/software:</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Gene Pulser II electroporater </td>
<td>&nbsp;</td>
<td>Bio-Rad</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>TE-FM Epi-Fluorescence system attached to Nikon Inverted Microscope Eclipse TE300</td>
<td>&nbsp;</td>
<td>Nikon</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Metamorph Software</td>
<td>&nbsp;</td>
<td>Universal Imaging</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Vertical Micro-pipette puller</td>
<td>&nbsp;</td>
<td>Narishige International </td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Micro-Forge M-900</td>
<td>&nbsp;</td>
<td>Narishige International </td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Hadraulic Micromanipulator MO-188NE</td>
<td>&nbsp;</td>
<td>Narishige International </td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>Coarse Manual Manipulator, MN-188NE</td>
<td>&nbsp;</td>
<td>Narishige International </td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>cDNA constructs:</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td>cDNA of G-Protein coupled receptor tagged with red fluorescence protein at C-terminus (hBLT1-RFP)</td>
<td>&nbsp;</td>
<td>Jala et al 2005</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<tr>
<td> cDNA of cytosolic protein tagged with GFP (&beta;-arrestin1-GFP in present study).</td>
<td>&nbsp;</td>
<td>Jala et al 2005</td>
<td>&nbsp;</td>
<td>&nbsp;</td>		</tbody>
		</table>
		</div>

real-time imaging of leukotriene b4 mediated cell migration and blt1 interactions with &beta;-arrestin

属于G蛋白偶联受体（GPCRs）的7个跨膜蛋白家族介导的细胞外信号传导到细胞内的反应。 GPCRs的控制多种生物学功能，如趋化，细胞内钙释放，基因调控配体依赖性通过异三聚体G蛋白的 1-2 。配体结合诱导了一系列构象变化，导致激活异三聚体G蛋白调节的第二信使，如环磷酸腺苷（cAMP）的，三磷酸肌醇（IP3）和二酰基甘油（DG）的水平。激活受体配体结合伴随还发起了一系列活动，以衰减信号通过脱敏，封存和/或内部化的受体。 GPCRs的脱敏过程中发生通过受体磷酸化G蛋白受体激酶（GRKs）和β- arrestins 3随后结合。 β- arrestins是胞浆蛋白转运到细胞膜G蛋白偶联受体激活后，磷酸化的受体结合（大多数情况下）通过促 ​​进受体的内化4-6存在。 白三烯B 4（LTB 4）是一种促炎性脂质分子，从花生四烯酸途径介导其行动派生通过GPCRs的，LTB 4受体1（BLT1;高亲和力受体）和LTB 4受体2（BLT2;低亲和力受体）7-9。 LTB 4 BLT1通路已被证明是在一些炎症性疾病，包括哮喘，关节炎，动脉粥样硬化10-17的关键。当前的纸张描述发展到显示器的LTB 4诱导白细胞迁移和BLT1的相互作用与β- arrestin的，在使用活细胞显微成像技术18-19中的受体易位的方法。 骨髓C57BL / 6小鼠的树突状细胞分离和培养作为先前描述 20-21 。这些细胞在活细胞成像方法进行了测试，证明LTB 4诱导细胞迁移。人类BLT1用红色荧光蛋白（BLT1 - RFP）的标签，在C -末端与绿色荧光蛋白（β- ARR - GFP）标记的β- arrestin1了两个质粒转染大鼠嗜碱性Leukomia（RBL - 2H3）细胞株18日至19日 。这些蛋白质和本地化之间的相互作用的动力学进行了监测使用的活细胞视频显微镜。在当前纸张的方法描述了利用显微技术研究G蛋白偶联受体在活细胞的功能反应。还介绍了当前的纸张MetaMorph软件的使用，以量化的荧光强度，以确定受体的动力学和胞浆蛋白的相互作用。

Watch this Scientific Journal Video about Real-time Imaging of Leukotriene B4 Mediated Cell Migration and BLT1 Interactions with ÃŽÂ²-arrestin at JoVE.com

Real-time Imaging of Leukotriene B4 Mediated Cell Migration and BLT1 Interactions with ÃƒÅ½Ã‚Â²-arrestin

本文介绍的方法，以确定具体的配体的白细胞趋化反应和识别细胞表面的受体，并用活细胞成像技术的胞质蛋白质之间的相互作用。

白三烯B实时成像 4介导的细胞迁移和BLT1与β- arrestin的相互作用

G-protein coupled receptors (GPCRs) belong to the seven transmembrane protein family and mediate the transduction of extracellular signals to ...

Research

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Immunology and Infection

Real-time Imaging of Leukotriene B4 Mediated Cell Migration and BLT1 Interactions with &beta;-arrestin

Real-time Live Imaging of T-cell Signaling Complex Formation

T细胞实时成像实时信号复合物的形成

Protection against infectious diseases is mediated by the immune system 1,2. T lymphocytes are the master coordinators of the immune system, regulating ...

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Monitoring Dendritic Cell Migration using 19F / 1H Magnetic Resonance Imaging

Monitoring Dendritic Cell Migration using 19F / 1H Magnetic Resonance Imaging

监测树突状细胞迁移<sup&gt; 19</sup&gt; F /<sup&gt; 1</sup&gt; H磁共振成像

Continuous  advancements in noninvasive imaging modalities such as magnetic resonance  imaging (MRI) have greatly improved our ability to study ...

Real-time Imaging of Heterotypic Platelet-neutrophil Interactions on the Activated Endothelium During Vascular Inflammation and Thrombus Formation in Live Mice

在活体小鼠的血管炎症和血栓形成的异型血小板中性粒细胞被激活的内皮细胞相互作用对实时成像

Interaction of activated platelets and leukocytes (mainly neutrophils) on the activated endothelium mediates thrombosis and vascular inflammation.1,2 ...

Real-time Imaging of Endothelial Cell-cell Junctions During Neutrophil Transmigration Under Physiological Flow

内皮细胞，细胞连接实时成像过程中中性粒细胞轮回在生理流动

During inflammation, leukocytes leave the circulation and cross the endothelium to fight invading pathogens in underlying tissues. This process is known ...

Real-time Imaging of Myeloid Cells Dynamics in ApcMin/+ Intestinal Tumors by Spinning Disk Confocal Microscopy

Real-time Imaging of Myeloid Cells Dynamics in ApcMin/+ Intestinal Tumors by Spinning Disk Confocal Microscopy

在髓系细胞动态实时成像<em&gt;装甲运兵车<sup&gt;最小/ +</sup</em&gt;肠道肿瘤通过旋转盘共聚焦显微镜

Myeloid cells are the most abundant immune cells within tumors and have been shown to promote tumor progression. Modern intravital imaging techniques ...

Imaging CD4 T Cell Interstitial Migration in the Inflamed Dermis

成像的CD4 T细胞间质迁移发炎真皮

The ability of CD4 T cells to carry out effector functions is dependent upon the rapid and efficient migration of these cells in inflamed peripheral ...

High Throughput, Real-time, Dual-readout Testing of Intracellular Antimicrobial Activity and Eukaryotic Cell Cytotoxicity

高通量，实时，细胞内的抗菌活性的双读出测试和真核细胞的细胞毒性

Traditional measures of intracellular antimicrobial activity and eukaryotic cell cytotoxicity rely on endpoint assays. Such endpoint assays require ...

Real-time Imaging and Quantification of Fungal Biofilm Development Using a Two-Phase Recirculating Flow System

用两相循环流系统实时成像和定量真菌生物膜的研究

In oropharyngeal candidiasis, members of the genus Candida must adhere to and grow on the oral mucosal surface while under the effects of salivary flow. ...

In Vitro Microfluidic Disease Model to Study Whole Blood-Endothelial Interactions and Blood Clot Dynamics in Real-Time

实时研究全血-内皮相互作用和血栓动力学的体外微流体疾病模型

The formation of blood clots involves complex interactions between endothelial cells, their underlying matrix, various blood cells, and proteins. The ...

Monitoring Influenza Virus Survival Outside the Host Using Real-Time Cell Analysis

使用实时细胞分析监测宿主外的流感病毒存活率

Methods for virus particle quantification represent a critical aspect of many virology studies. Although several reliable techniques exist, they are ...