Name: a flow cytometry-based assay for measuring mitochondrial membrane potential in cardiac myocytes after hypoxia/reoxygenation
Uploaded: 2018-07-13T13:00:00
Description: Watch this Scientific Journal Video about A Flow Cytometry-based Assay for Measuring Mitochondrial Membrane Potential in Cardiac Myocytes After Hypoxia/Reoxygenation at JoVE.com

本研究由中国国家重点研究开发项目 (2017YFC1700503)、全国基础研究计划 (973 计划)、中国国家自然科学基金 (81370223 号) 资助。81573957号), 以及北京协和医学院研究生创新研究基金会 (2016-1002-01-02)。

1. 试剂和溶液的制备
<ol><li>根据制造商的指示, 加入25毫升肌细胞生长培养基补充剂, 以500毫升的细胞生长培养基, 制备人心肌肌 (母国) 全培养基。在使用前贮存在4°c 和温暖到37°c。</li>
	<li>将 txl-特格尔超细粉溶于血清/葡萄糖 Dulbecco 修饰鹰的培养基 (DMEM) 中, 制备通心络 (txl-特格尔) 溶液, 并通过添加 txl-特格尔将µg 浓度调整为 400 DMEM/毫升 (详情见11)。在使用前贮存在4°c 和温暖...

<ol>
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A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Acute+Myocardial+Infarction.">Acute Myocardial Infarction.</a> New England Journal of Medicine. 376 (21), 2053-2064 (2017).</li><li>Ibanez, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=ESC+Guidelines+for+the+management+of+acute+myocardial+infarction+in+patients+presenting+with+ST-segment+elevation:+The+Task+Force+for+the+management+of+acute+myocardial+infarction+in+patients+presenting+with+ST-segment+elevation+of+the+European+Society+of+Cardiology+(ESC).">ESC Guidelines for the management of acute myocardial infarction in patients presenting with ST-segment elevation: The Task Force for the management of acute myocardial infarction in patients presenting with ST-segment elevation of the European Society of Cardiology (ESC).</a> European Heart Journal. 39 (2), 119-177 (2017).</li><li>Yellon, D. 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F., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=P53+dependent+mitochondrial+permeability+transition+pore+opening+is+required+for+dexamethasone-induced+death+of+osteoblasts.">P53 dependent mitochondrial permeability transition pore opening is required for dexamethasone-induced death of osteoblasts.</a> Journal of Cell Physiology. 229 (10), 1475-1483 (2014).</li><li>Nazarewicz, R. R., Dikalova, A. E., Bikineyeva, A., Dikalov, S. 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在这里, 我们提出一个协议, 使用 JC-1 染料来评估细胞的基质干细胞暴露后, 通过 JC-1 检测发现, 细胞的基质干细胞是独立的因素, 如线粒体大小, 形状和密度可能影响单组分荧光信号14。因此, JC-1 化验结果比较可靠。同时, 对 JC-1 的检测具有很方便、省时的性能。这种检测对材料和试剂的要求很低, 一般情况下, 从细胞分离到基质金属蛋白酶的测量, 其染色需要少于1.5 小时。
<p cl...

冠心病是全世界死亡的主要原因。ST 段抬高心肌梗死患者减少缺血性损伤和限制梗死大小的选择是通过经皮冠状动脉介入治疗 (PCI) 的及时有效的心肌再灌注1, 2。然而, 再灌注导致额外的损伤, 可能占到最后梗塞大小的30% 的3。普遍认为线粒体通透性过渡孔隙 (mPTP) 不仅是缺血/再灌注过程中线粒体损伤和细胞死亡的中枢, 而且也是心肌梗死信号4的收敛目标。,5. 随着 mPTP 的开放将导致内线粒体膜电位的退极化 (基质金属蛋白酶)4, 我们检测到 mPTP 开放使用 5,5′, 6,6′四氯化碳 1,1′, 3,3′-四乙基 imidacarbocyanineiodide (JC-1) 化验。
JC-1 法是一种定性和定量的 cytofluorimetric 方法, 通过对单个线粒体6级的基质细胞进行分析, 进一步验证了它的有效性。JC-1 作为一种聚集形式存在, 在线粒体基质中产生红色到橙色的辐射 (590 17.5 nm);随着基质的丧失, JC-1 被转化为单体形式, 产生绿色荧光, 发射量为 530-15 nm。因此, 红/绿荧光强度比的降低可以表明在缺血/再灌注 (I/R) 条件下基质金属蛋白酶的减少。
除了 JC-1, 还研究了膜渗透亲脂阳离子, 如罗丹明123和 3,3′-dihexyloxadicarbocyanine 碘 [DiOC6 (3)]。然而, 与这两种探头相比, JC-1 更能可靠地分析基质金属蛋白酶。罗丹明123具有相对较差的灵敏度 (特别是在淬火方式7,8) 和较差的特异性。在罗丹明123的转变有时是如此之小, 研究人员或设备很难观察/检测。此外, 在单个细胞中, 罗丹明123有不同的线粒体结合点, 因此它可能有不同的荧光排放量9。DiOC6 (3) 不推荐用于检测基质金属蛋白酶, 因为它对等离子体膜10的退极化反应灵敏。
因此, 在这里, 我们使用 JC-1 的方法来评估在接触到缺氧/复氧或没有保护剂的情况下母国措施的基质。

<table border="0" cellpadding="0" cellspacing="0" width="970">
	<tbody>
		<tr height="40">
			<td height="40" style="height:40px;width:293px;">Mitochondrial membrane potential assay kit with JC-1</td>
			<td style="width:307px;">Beyodtime, China</td>
			<td style="width:80px;">C2006</td>
			<td style="width:291px;">In the kit there are JC-1 stock solution (200&#215;), stock staining buffer (5&#215;) and CCCP(10mM)</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Tongxinluo ultrafine powder</td>
			<td>Shijiazhuang Yiling Pharmaceutical Co., China</td>
			<td>071201</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:293px;">Annexin V-FITC/PI Kit</td>
			<td>Becton-Dickinson, USA</td>
			<td>556547</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">DMEM</td>
			<td>Life Technologies, Grand Island Biological Company, USA</td>
			<td>11966-025</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Human cardiac myocyte</td>
			<td>Promocell, Germany</td>
			<td>C-12810</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;width:293px;">Myocyte Growth Medium 
			(SupplementMix)</td>
			<td>Promocell, Germany</td>
			<td>C-39275</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Myocyte Growth Medium (Ready-to-use)</td>
			<td>Promocell, Germany</td>
			<td>C-22070</td>
			<td>used with Myocyte Growth Medium SupplementMix</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">GENbox</td>
			<td>BioM&#233;rieux, Marcy l&#8217;Etoile, France</td>
			<td>96127</td>
			<td>2.5L</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Catalyst (AnaeroPack)</td>
			<td>MITSUBISHI GAS CHEMICAL&#160;COMPANY, INC.&#160;, Japan</td>
			<td>&#160;C-1</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Anaerobic indicator</td>
			<td>BioM&#233;rieux, Marcy l&#8217;Etoile, France</td>
			<td>96118</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Flow cytometer</td>
			<td>Becton-Dickinson, USA</td>
			<td>FACSAria 2</td>
			<td></td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">BD FACSDiva Software</td>
			<td>Becton-Dickinson, USA</td>
			<td></td>
			<td>Version8.0.1</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">Sample tube</td>
			<td>Corning science, USA</td>
			<td>352054</td>
			<td>12*75mm</td>
		</tr>
		<tr height="40">
			<td height="40" style="height:40px;">PBS</td>
			<td>Hyclone, USA</td>
			<td>SH30256.01</td>
			<td></td>
		</tr>
	</tbody>
</table>

a flow cytometry-based assay for measuring mitochondrial membrane potential in cardiac myocytes after hypoxia/reoxygenation

及时有效地再灌注闭塞性冠状动脉是降低 st 段抬高心肌梗死患者心肌梗死大小的最佳策略。然而, 再灌注本身可能导致进一步的心肌细胞死亡, 这一现象被称为再灌注损伤。线粒体通透性过渡孔隙 (mPTP) 的开放, 随着线粒体膜电位 (基质) 的减少, 或线粒体的退极化, 被普遍认为是再灌注损伤的最后一步, 负责线粒体和心肌细胞死亡。JC-1 是一种脂溶性阳离子染料, 在线粒体中积累取决于基质的价值。基质金属蛋白酶越高, 线粒体中的 JC-1 积累越多。线粒体中 JC-1 含量的增加可以通过荧光发射从绿色 (~ 530 nm) 到红色 (~ 590 nm) 来反映出来。因此, 降低红/绿荧光强度比可以表明线粒体的退极化。在这里, 我们利用 JC-1 测量基质金属蛋白酶, 或在缺氧/复氧后的人心肌细胞中 mPTP 的开放, 通过流式细胞术检测。

在进行 JC-1 试验以评估基质金属蛋白酶的变化之前, 强烈建议进行实验以确认研究人员成功确定的条件。如流式细胞术结果 (图 2) 所示, 与正常组相比, 缺氧/复氧 (H/r) 显著诱导了母国措施 (蛋白 V +/PI±) 的凋亡, 表明我们建立了一个基于细胞的 I/R (45.00 2.13% vs) 模型。11.50, 0.18% 在正常组, p < 0.05)。通心络是一种具有心肌作用的中药, 在 h/r 组 ( p ...

Watch this Scientific Journal Video about A Flow Cytometry-based Assay for Measuring Mitochondrial Membrane Potential in Cardiac Myocytes After Hypoxia/Reoxygenation at JoVE.com

A Flow Cytometry-based Assay for Measuring Mitochondrial Membrane Potential in Cardiac Myocytes After Hypoxia/Reoxygenation

在这里, 我们提出一个协议, 使用 JC-1 染料评估细胞线粒体膜电位后, 暴露在缺氧/复氧与或没有保护剂。

流式细胞仪测定缺氧/复氧后心肌细胞线粒体膜电位的实验研究

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Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle

Phosphorus-31 Magnetic Resonance Spectroscopy: A Tool for Measuring In Vivo Mitochondrial Oxidative Phosphorylation Capacity in Human Skeletal Muscle

磷31磁共振波谱分析：一种测量工具<em&gt;在体内</em&gt;线粒体氧化磷酸化能力人骨骼肌

Skeletal muscle mitochondrial oxidative phosphorylation (OXPHOS) capacity, which is critically important in health and disease, can be measured in vivo ...

Isolation of Endothelial Progenitor Cells from Healthy Volunteers and Their Migratory Potential Influenced by Serum Samples After Cardiac Surgery

从健康志愿者和它们的迁徙可能通过血清中的影响心脏手术后的内皮祖细胞的分离

Endothelial progenitor cells (EPCs) are recruited from the bone marrow under pathological conditions like hypoxia and are crucially involved in the ...

Standardized Measurement of Nasal Membrane Transepithelial Potential Difference (NPD)

Standardized Measurement of Nasal Membrane Transepithelial Potential Difference NPD

鼻膜 Transepithelial 电位差的标准化测量 (NPD)

We describe a standardized measurement of nasal potential difference (NPD). In this technique, cystic fibrosis transmembrane conductance regulator (CFTR) ...

Implantation of hiPSC-derived Cardiac-muscle Patches after Myocardial Injury in a Guinea Pig Model

几内亚猪模型心肌损伤后 hiPSC-derived 衍生心肌贴片的植入

Due to the limited regeneration capacity of the heart in adult mammals, myocardial infarction results in an irreversible loss of cardiomyocytes. This loss ...

Isolation of Atrial Myocytes from Adult Mice

从成年小鼠分离心膜肌细胞

The electrophysiological properties of atrial myocytes importantly affect overall cardiac function. Alterations in the underlying ionic currents ...

Hemocompatibility Testing of Blood-Contacting Implants in a Flow Loop Model Mimicking Human Blood Flow

流循环模型中血液接触植入物的血液相容性测试模拟人类血流

The growing use of medical devices (e.g., vascular grafts, stents, and cardiac catheters) for temporary or permanent purposes that remain in the ...

In vitro Assessment of Myocardial Protection following Hypothermia-Preconditioning in a Human Cardiac Myocytes Model

人类心脏肌细胞模型中体温过低预科后心肌保护体外评估

Ischemia/reperfusion-derived myocardial dysfunction is a common clinical scenario in patients after cardiac surgery. In particular, the sensitivity of ...