Name: real-time cytotoxicity assays in human whole blood
Uploaded: 2014-11-07T15:00:00
Description: Watch this Scientific Journal Video about Real-time Cytotoxicity Assays in Human Whole Blood at JoVE.com

我们感谢美国国家癌症研究所IMAT计划从美国国立卫生研究院对这项工作[R33 CA174616-01A1]资金。

1.目标细胞的制备<ol><li>在37℃下保持的靶细胞（ 例如 ，对Raji淋巴瘤细胞）的生长培养基（RPMI 1640培养基，含10％热灭活的胎牛血清（FBS），4nm的L-谷氨酰胺，和500单位/ ml青霉素/链霉素）的在一个5％CO 2的培养箱中培养。 </li><li>离心样品以沉淀靶细胞在15ml试管中。离心时间随不同的细胞类型;离心3分钟，在468×g离心Raji细胞。 </li><li>第一次吸上形成的上清液表面有气泡，?...

<ol>
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WCA的体外抗肿瘤筛查工具与单细胞分辨率12-16，传统的放映目标，如CDC和ADCC分析9-11，和之前的临床前动物试验后，最好利用的关键。目前，主要的靶标筛选测定，如CDC或ADCC检测在一个简化的介质或缓冲体系都执行。然而，候选药物，显示功效在这些简化的缓冲系统并不总是有效的，在更复杂的全血系统。因此，WCA可以桥接传统的目标掩护和昂贵的动物研究之间的间隙，减...

在制药工业中的最新进展已经导致了在实现肿瘤细胞抗体和个性化的癌症治疗方法的具体标识的兴趣增加;然而，几个障碍物的过程中遇到。只有5％是在临床前开发的抗癌活性剂都出现在阶段II-III测试1,2足够的疗效后，获得许可。临床前的策略（ 在体外和体内 ）是次优的作为许多例子已经表明，抗肿瘤药物有不同的行为在人类和实验动物的主要是由于其不同的血液成分3-5。 为解决抗肿瘤药物筛选平台的必要性，并提供昂贵的动物实验和临床试验前一个检查点，一个人全血细胞毒性测定法（WCA），提出了用于评价抗肿瘤药物疗效以更加相关的生物环境。该全血中的细胞毒性测定法可用于评估个体的细胞与抗体和其他药物候选物在人全血的响应。 的WCA是通过将高通量细胞定位技术与高通量和高含量成像6开发的。通过利用一种自动成像系统中，两个活细胞和死细胞的数目可以用较高的精确度来确定。由于这一事实，即靶细胞被固定在同一焦平面上，WCA是能够提供实时定量细胞毒性分析，而无需去除红细胞。此外，该自动成像系统提供了若干优点，如已达到指定的搜索条件的唯一的靶细胞（ 例如 ，荧光标记的细胞和细胞形态）被选通，并进行处理。此外，它允许生产每天144的板。因此，这种成像能力和吞吐量允许高-C的运行ontent和同时高通量实验。通过组合的WCA和自动成像系统，高通量定量细胞的细胞毒性分析可以在一个以上生物相关的环境来实现。

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	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Name of Material/ Equipment</td>
			<td style="width:172px;">Company</td>
			<td style="width:119px;">Catalog Number</td>
			<td style="width:135px;">Name/Discription</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:336px;">Cell attachment 96 well plate kits&#160;</td>
			<td style="width:172px;">Adheren</td>
			<td style="width:119px;">AP9601</td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:336px;">Suspension Single cell array 8 well chamber slide</td>
			<td style="width:172px;">Adheren</td>
			<td style="width:119px;">SS0801</td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;width:336px;">Adherent Single cell array 8 well chamber slide</td>
			<td style="width:172px;">Adheren</td>
			<td style="width:119px;">SS0802</td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Lymphoma cell line CD20+</td>
			<td style="width:172px;">ATCC</td>
			<td style="width:119px;">CCL-86</td>
			<td style="width:135px;">Raji cells</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Lymphoma cell line CD20-</td>
			<td style="width:172px;">ATCC</td>
			<td style="width:119px;">CRL-8083</td>
			<td style="width:135px;">MC/CAR</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">RPMI 1640 with L-glutamine</td>
			<td style="width:172px;">Life Technologies</td>
			<td style="width:119px;">11875-119</td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Fetal Bovine Serum</td>
			<td style="width:172px;">Thermo</td>
			<td style="width:119px;">SH30070.01HI</td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Peni/Strep</td>
			<td style="width:172px;">Life Technologies</td>
			<td align="right" style="width:119px;">15070063</td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Cytosolic dye</td>
			<td style="width:172px;">Life Technologies</td>
			<td style="width:119px;">C7025</td>
			<td style="width:135px;">Cell Tracker Green</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Rituxan (Biosimilar)&#160;</td>
			<td style="width:172px;">Eureka Therapeutics</td>
			<td style="width:119px;"></td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Human whole blood</td>
			<td style="width:172px;">Allcells</td>
			<td style="width:119px;">WB001</td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Propidium Iodide</td>
			<td style="width:172px;">Sigma</td>
			<td style="width:119px;">P4170-10MG</td>
			<td style="width:135px;"></td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Automatic imaging system</td>
			<td style="width:172px;">Molecular Devices</td>
			<td style="width:119px;">Contact Vendor</td>
			<td style="width:135px;">Cell Reporter</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:336px;">Cell counting program</td>
			<td style="width:172px;">Molecular Devices</td>
			<td style="width:119px;">Contact Vendor</td>
			<td style="width:135px;">Cell Reporter</td>
		</tr>
	</tbody>
</table>

real-time cytotoxicity assays in human whole blood

的实时的基于细胞的全血中的细胞毒性测定法（WCA），允许访问整个细胞的细胞毒作用的时间信息被开发的高通量细胞定位技术。靶向肿瘤细胞群体的第一预编程，以固定到一个数组的格式，并标记有绿色荧光胞浆染料。以下的单元阵列形成，抗体药物的加入与人全血组合。碘化丙啶（PI），然后加入以评估细胞死亡。单元阵列是用自动成像系统进行分析。而细胞质染料标记的靶向肿瘤细胞群，PI标签死肿瘤细胞群。因此，靶癌细胞的细胞杀伤百分比可通过计算存活的靶细胞，以死靶向细胞的数目的数量进行定量。用这种方法，研究人员能够访问时间依赖性和剂量依赖性细胞的细胞毒性的信息。值得注意的是，没有任何有害的无线电化学品的使用。这里介绍的WCA已经过测试与淋巴瘤，白血病和实体瘤细胞系。因此，WCA可以让研究人员评估在一个高度相关的离体条件下的药物的疗效。

抗CD20抗体和淋巴瘤细胞（Raji细胞和MC / CAR）被选择作为模型系统来证明全血细胞毒性测定法（WCA）7,8。 Raji细胞有CD20的高拷贝数的在细胞表面上，而MC / CAR的细胞有CD20的低拷贝数的对它们的膜。靶向细胞首先染成绿色与绿色荧光细胞内的染料，并排列在96孔板中。万 - 50000靶淋巴瘤细胞被固定在每个孔中。 180微升新鲜抽取的人全血加入到每孔中。抗CD20抗体，然后加入到96孔板中以梯度浓?...

Watch this Scientific Journal Video about Real-time Cytotoxicity Assays in Human Whole Blood at JoVE.com

Real-time Cytotoxicity Assays in Human Whole Blood

全血细胞毒性测定（WCA）是通过将高通量细胞定位技术与荧光显微镜和自动化图像处理开发了细胞毒性测定。在这里，我们描述了如何用抗CD20抗体治疗的淋巴瘤细胞可以分析实时人全血中，以提供定量细胞的细胞毒性分析。

实时的细胞毒性分析在人全血

A live cell-based whole blood cytotoxicity assay (WCA) that allows access to temporal information of the overall cell cytotoxicity is developed with ...

Research

JoVE Journal

Medicine

Evaluation of Nanoparticle Uptake in Tumors in Real Time Using Intravital Imaging

使用实时活体成像在肿瘤纳米粒子吸收的评价

Current technologies for tumor imaging, such as ultrasound, MRI, PET and CT, are unable to yield high-resolution images for the assessment of nanoparticle ...

科研

医学

Real-time fMRI Biofeedback Targeting the Orbitofrontal Cortex for Contamination Anxiety

实时功能磁共振成像生物反馈，针对污染焦虑的眶额皮层

We present a method for training subjects to control activity in a region of their orbitofrontal cortex associated with contamination anxiety using ...

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood

快速点护理依诺肝素的抗凝血剂功效的测定全血中

There is the need for a clinical assay to determine the extent to which a patient's blood is effectively anticoagulated by the ...

MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR (qPCR)

MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR qPCR

实时定量PCR（qPCR的microRNA检测在前列腺肿瘤）

MicroRNAs (miRNAs) are single-stranded, 18&#x2013;24 nucleotide long, non-coding RNA molecules. They are involved in virtually every cellular process ...

Movement Retraining using Real-time Feedback of Performance

的运动再培训采用实时反馈的性能

Any modification of movement - especially movement patterns that have been honed over a number of years - requires re-organization of the neuromuscular ...

Cerebrospinal Fluid MicroRNA Profiling Using Quantitative Real Time PCR

脑脊液的microRNA分析采用实时定量PCR技术

MicroRNAs (miRNAs) constitute a potent layer of gene regulation by guiding RISC to target sites located on mRNAs and, consequently, by modulating their ...

Chemotherapy-induced Vascular Toxicity - Real-time In vivo Imaging of Vessel Impairment

Chemotherapy-induced Vascular Toxicity - Real-time In vivo Imaging of Vessel Impairment

化疗引起的血管毒性 - 实时<em&gt;在体内</em&gt;船舶减值成像

Certain classes of chemotherapies may exert acute vascular changes that may progress into long-term conditions that may predispose the patient to an ...

Assessment of Ovarian Cancer Spheroid Attachment and Invasion of Mesothelial Cells in Real Time

在实时的间皮细胞卵巢癌球体附件和入侵评估

Ovarian cancers metastasize by shedding into the peritoneal fluid and dispersing to distal sites within the peritoneum. Monolayer cultures do not ...

Real-time X-ray Imaging of Lung Fluid Volumes in Neonatal Mouse Lung

在新生小鼠肺肺流体体积的实时X射线成像

At birth, the lung undergoes a profound phenotypic switch from secretion to absorption, which allows for adaptation to breathing independently. Promoting ...

Evaluation of Lung Metastasis in Mouse Mammary Tumor Models by Quantitative Real-time PCR

评价肺转移的小鼠乳腺肿瘤模型定量实时荧光定量PCR

Metastatic disease is the spread of malignant tumor cells from the primary cancer site to a distant organ and is the primary cause of cancer associated ...