Name: zika virus specific diagnostic epitope discovery
Uploaded: 2017-12-12T13:00:00
Description: Watch this Scientific Journal Video about Zika Virus Specific Diagnostic Epitope Discovery at JoVE.com

目前的支持由 NIDCRR44 DE024456 的 SBIR (小型企业创新研究) 行政补充补助金提供。NIDCR 艾滋病毒补助金的发展 NIDCR 赠款 U01 DE017855, 以制定一个验证性的护理点诊断艾滋病毒。我们感谢 Silke Weisenburger (德国海德堡 PEPperPRINT) 的技术援助和亲切支持。我们还感谢纽约大学朗格尼医学中心的李-林奥德赛成像系统。

这些数据是纽约大学牙科学院正在进行的研究研究的一部分, 由纽约大学医学院的机构审查委员会批准, H10-01894。本研究中使用的临床样本是以前用于诊断的不确定样本, 并得到纽约州奥尔巴尼的美国卫生部的沃斯德中心的许可。
1. 在特定的孵化盘中安装 ZIKV 高密度肽微阵列幻灯片
<ol><li>使用无粉手套处理玻璃滑边。玻璃滑动尺寸是75.4 毫米25.0 毫米和1毫米厚。将幻灯片放在?...

<ol>
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我们设计了一个协议, 利用高密度肽芯片包含整个 Zika 病毒蛋白序列 (法国玻利尼西亚人菌株)。该芯片是通过打印3423不同的重叠线性多肽制造的。每一个肽是15氨基酸并且由它的最近的邻居仅一个残余在序列 (例如, 14 残余重叠) 变化。虽然可以打印较短的重叠, 但表位映射更精确, 重叠时间更长。每一个肽都以重复打印, 以提高可靠性。
重要的是开始的过程中, 预先染色?...

基于临床症状的 Zika 病毒 (ZIKV) 诊断具有挑战性, 因为它与登革热和基孔肯亚病毒感染的传播媒介、地理分布和症状有关1。鉴于怀孕期间感染 ZIKV 的妇女面临不良妊娠结局的风险, 区分3病毒是很重要的。虽然目前的分子诊断测试是特定的, 但它们只在血液或唾液中有用, 在相对较短的急性感染期间2,3。血清学检测是诊断这一初始感染期以外的重要4。
ZIKV 特异性血清学检测的发展具有挑战性的两个原因: 一是人类免疫系统反应的 Zika 抗原目前尚不为人所知;第二, 保守的 flaviviruses 氨基酸序列诱导抗体的交叉反应性。我们的目的是发现独特的 ZIKV 特定肽用于诊断。已经开发出不同的方法来筛选包括噬菌体、细菌和酵母表面在内的整个蛋白质的肽库, 显示5,6,7,8,9, 10。我们的战略是使用高密度肽芯片, 允许快速和廉价的高通量血清学筛查11,12 , 随后确定的肽可用于改善目前的血清学检测 ZIKV 感染的方法。
此协议允许使用高密度肽芯片 (图 1) 发现 Zika 病毒特定诊断肽。采用多肽激光印花技术制备高密度肽微阵列。整个 ZIKV 蛋白序列由3423种基于法国玻利尼西亚应变 (基因库: KJ776791.2) 的氨基酸残留物印在标准玻璃上, 在15条线性残留物块中, 重叠14个氨基酸残留物, 以复制共6846个肽斑。除了整个 Zika 蛋白序列多肽, 微阵列利用流感血凝素 (HA) 肽进行内部控制. 
Zika 证实的阳性血清样本 (纽约州奥尔巴尼) 获得, 用于鉴定特定的免疫球蛋白 M (IgM) 和免疫球蛋白 G (IgG) 活性肽。在一夜之间用样本孵化后, 微阵列被染成二级 fluorochrome 共轭抗体 (抗人 IgM 或抗人 IgG), 并在微阵列扫描仪上进行分析。用制造芯片的同一公司提供的特定软件对光斑强度和肽标注进行量化。

<table>
	<tbody>
		<tr>
			<td>PEPperCHIP Custom Peptide Microarray</td>
			<td>PEPperPRINT</td>
			<td>PPC.001.001</td>
			<td>Custom peptide micarray: our microarray contains the entire Zika virus protein sequence</td>
		</tr>
		<tr>
			<td>PEPperCHIP incubation tray 3/1</td>
			<td>PEPperPRINT</td>
			<td>PPC.004.001</td>
			<td></td>
		</tr>
		<tr>
			<td>PEPperCHIP Staining Kit (680 nm) (anti-HA, DyLight labeling)</td>
			<td>PEPperPRINT</td>
			<td>PPC.037.002</td>
			<td></td>
		</tr>
		<tr>
			<td>PepSLide Analyzer</td>
			<td>PEPperPRINT</td>
			<td>PSA.004.001</td>
			<td>14-days free License for Windows</td>
		</tr>
		<tr>
			<td>Rockland Blocking buffer</td>
			<td>Rockland</td>
			<td>MB-070</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-human IgM (mu chain) DyLight 800</td>
			<td>Rockland</td>
			<td>609-145-007</td>
			<td></td>
		</tr>
		<tr>
			<td>anti-human IgG Fc DyLight 680</td>
			<td>Thermo Scientific</td>
			<td>SA5-10138</td>
			<td></td>
		</tr>
		<tr>
			<td>LI-COR Odyssey Imaging System</td>
			<td>LI-COR</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Orbital shaker device</td>
			<td>IKA</td>
			<td>MTS 2/4 digital microtiter shaker</td>
			<td></td>
		</tr>
		<tr>
			<td>Adobe Illustrator</td>
			<td>Adobe</td>
			<td></td>
			<td></td>
		</tr>
		<tr>
			<td>Deltagraph</td>
			<td>Redrocks</td>
			<td></td>
			<td></td>
		</tr>
	</tbody>
</table>

zika virus specific diagnostic epitope discovery

高密度肽微阵列允许在一张标准显微镜幻灯片上筛选超过6000多肽。该方法可应用于药物的发现、治疗目标的识别和诊断的发展。在这里, 我们提出了一个协议, 以发现特定的 Zika 病毒 (ZIKV) 诊断肽使用高密度肽芯片。用一种高密度肽微阵列对 ZIKV 感染进行了验证, 该芯片含有将整个 ZIKV 蛋白转化为3423个独特的15线性氨基酸 (aa) 残留物, 并重复打印 14 aa 的残留重叠。在同一阵列内染色不同的二次抗体, 我们检测到与血清中存在的免疫球蛋白 M (IgM) 和免疫球蛋白 G (IgG) 抗体结合的肽。选择这些肽进行进一步的验证实验。在本协议中, 我们描述了在设计、处理和分析高密度肽芯片时所采用的策略。

由制造芯片的同一公司提供的特定软件对扫描后的微阵列进行了分析。所创建的读出文件包含每个点的信号强度、背景值和相应的肽序列。通过绘制在从原始值中减去背景后获得的绿色前景中值 (图 3), 可以直观地描绘出每个肽对 IgM 有强烈反应的斑点荧光强度。
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Watch this Scientific Journal Video about Zika Virus Specific Diagnostic Epitope Discovery at JoVE.com

Zika Virus Specific Diagnostic Epitope Discovery

在本协议中, 我们描述了一种利用高密度肽芯片来发现 Zika 病毒特异性诊断肽的技术。该议定书可 readly 其他新出现的传染性疾病。

Zika 病毒特定诊断表位发现

High-density peptide microarrays allow screening of more than six thousand peptides on a single standard microscopy slide. This method can be applied for ...

Research

JoVE Journal

Immunology and Infection

Peptide:MHC Tetramer-based Enrichment of Epitope-specific T cells

肽：MHC四聚体为基础的抗原表位特异性的T细胞的富集

A  basic necessity for researchers studying adaptive immunity with in vivo experimental models is an  ability to identify T cells based on their T cell ...

科研

免疫与感染

Assays for the Identification of Novel Antivirals against Bluetongue Virus

为检验新型抗病毒药物的鉴定对蓝舌病病毒

To identify potential antivirals against BTV, we have  developed, optimized and validated three assays presented here. The CPE-based  assay was the first ...

Neutrophil Isolation and Analysis to Determine their Role in Lymphoma Cell Sensitivity to Therapeutic Agents

中性粒细胞分离和分析，以确定他们的淋巴瘤细胞的敏感性对治疗药物的作用

Neutrophils are the most abundant (40% to 75%) type of white blood cells and among the first inflammatory cells to migrate towards the site of ...

Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons

Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons

兹卡病毒感染细胞培养系统和<em&gt;体外</em&gt;干扰素的预防作用

Zika Virus (ZIKV) is an emerging pathogen that is linked to fetal developmental abnormalities such as microcephaly, eye defects, and impaired growth. ZIKV ...

Rescue and Characterization of Recombinant Virus from a New World Zika Virus Infectious Clone

来自新世界Zika病毒感染性克隆的重组病毒的救援和表征

Infectious cDNA clones allow for genetic manipulation of a virus, thus facilitating work on vaccines, pathogenesis, replication, transmission and viral ...

A Simple Flow Cytometry Based Assay to Determine In Vitro Antibody Dependent Enhancement of Dengue Virus Using Zika Virus Convalescent Serum

A Simple Flow Cytometry Based Assay to Determine In Vitro Antibody Dependent Enhancement of Dengue Virus Using Zika Virus Convalescent Serum

基于流式细胞仪的 Zika 病毒疗养血清测定登革热病毒的体外抗体依赖性

Antibody dependent enhancement of infection has been shown to play a major role in Dengue viral pathogenesis. Traditional assays that measure the capacity ...

Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice

Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice

感染 Ifnar1 小鼠 Immunoprivileged 器官寨卡病毒特异 T 细胞反应的评价

The Zika virus (ZIKV) can induce inflammation in immunoprivileged organs (e.g., the brain and testis), leading to the Guillain-Barr&#233; syndrome and ...

Quantification of Antibody-dependent Enhancement of the Zika Virus in Primary Human Cells

原代人细胞中寨卡病毒抗体依赖性增强的定量研究

The recent emergence of the flavivirus Zika and neurological complications, such as Guillain-Barr&#233; syndrome and microcephaly in infants, has brought ...

Rescue of Recombinant Zika Virus from a Bacterial Artificial Chromosome cDNA Clone

从细菌人工染色体cDNA克隆中拯救重组寨卡病毒

The association of Zika virus (ZIKV) infection with neurological complications during the recent worldwide outbreak and the lack of approved vaccines ...

Isolation and Quantification of Zika Virus from Multiple Organs in a Mouse

从小鼠多个器官分离和定量寨卡病毒

The methods being presented demonstrate laboratory procedures for the isolation of organs from Zika virus infected animals and the quantification of viral ...