Human IL-21 Proquantum Immunoassay Kit/人IL-21 ProQuantum免疫检测试剂盒
货号：A35593,A355935
规格：96 Tests,5X96 Tests
价格：6561,33970
产品类型：Proquantum ELISA
品牌：Thermo Fisher
物种：人
宿主：其它
抗体亚型：其它
荧光染料：其它
灵敏度 | <0.3 pg/mL |
| 检测范围 | 0.32-5000 pg/mL |
样本类型/体积 | 血浆 2-5 μL 血清 2-5 μL 上清液 2-5 μL |
操作时间 | 30 min |
测试时间 | 2 hr |
Homogenous (no wash) | Yes |
仪器设备 | qPCR Instruments |
规格 | 5 X 96 Tests |
组份 | - 分析稀释缓冲液 - 抗体结合物 A - 抗体结合物 B - 抗体结合稀释缓冲液 - 标准品 - 预混料 - 连接酶 |
储存温度 | -20℃ |
| 运输条件 | 干冰 |
| Protein name | IL-21 |
物种（Tested） | 人 |
试剂盒类型 | Proximity-based Immunoassay |
标记（染料） | Unconjugated |
| Gene ID | (Human) 59067 |
| Gene aliases | CVID11, IL-21, Za11 |
| Gene symbol | IL21 |
UniProt ID | (Human) Q9HBE4 |
| The ProQuantum HumanIL-21Immunoassay Kit is designed to provide highly sensitive quantitative measurements of human IL-21 protein in small sample volumes. Utilizing proximity ligation assay (PLA) technology, the assay combines the analyte specificity of high-affinity antibody-antigen binding with the signal detection and amplification capabilities of real-time PCR to achieve a simple yet powerful next-generation protein quantitation platform. A user-friendly workflow combined with intuitive Cloud-based software for analytics enables sample-to-answer in just 2 hours.ProQuantum 免疫检测试剂盒进行少量人IL-21蛋白的高灵敏度定量检测。 利用邻近连接测定（PLA）技术，该测定将高亲和力抗体-抗原结合的分析物特异性与实时PCR的信号检测和扩增功能结合在一起，从而实现了一个简单而强大的下一代蛋白质定量平台。 友好的工作流程与直观的基于云的分析软件相结合，可在2小时内完成从样品到答案的分析。ProQuantum immunoassays utilize a matched pair of target-specific antibodies, each conjugated to a DNA oligonucleotide. During antibody-analyte binding, the two DNA oligos are brought into close proximity, which allows for ligation of the two strands and subsequent creation of a template strand for amplification. This platform leverages the sensitivity and large dynamic range of Applied Biosystems TaqMan real-time PCR technology.ProQuantum免疫测定法使用一对配对的靶标特异性抗体，每种抗体均与DNA寡核苷酸偶联。 在抗体-分析物结合过程中，两个DNA寡核苷酸紧密靠近，这允许两条链连接并随后创建模板链进行扩增。 该平台利用了Applied Biosystems TaqMan实时PCR技术的灵敏度和宽动态范围。The assay workflow is fast and easy—2 steps in 2 hours. There are a total of 7 components in each kit (Figure 2). First, mix the antibody-conjugates, dilute the sample, and create the standard curve in a working plate. Then, using a multi-channel pipette, add the antibody-conjugates and sample (or standard) into the wells of a PCR plate and incubate for 1 hour. Combine the master mix and ligase and add to the wells of the PCR plate, then run the plate on any qPCR instrument. After the run is complete, import the results file into the ProQuantum cloud-based software at https://apps.thermofisher.com/apps/proquantum. Using this software, the data can be analyzed easily to obtain protein concentration values. The software allows you to set up standard curves, design plate layouts, set up customized assay instructions, and obtain robust statistical group-wise comparisons.测定工作流程快速简便— 2小时内完成2个步骤。 每个试剂盒中总共有7个组件。 首先，混合抗体-结合物物，稀释样品，并在工作板上创建标准曲线。 然后，使用多通道移液器，将抗体结合物和样品（或标准品）添加到PCR板的孔中，并孵育1小时。 合并预混液和连接酶，并添加到PCR板的孔中，然后在任何qPCR仪器上运行该板。 运行完成后，将结果文件导入https://apps.thermofisher.com/apps/proquantum的基于ProQuantum云的软件中。 使用此软件，可以轻松分析数据以获得蛋白质浓度值。 该软件允许您设置标准曲线，设计板布局，设置定制化验说明并获得可靠的逐组统计比较。Target information 靶标信息IL-21 is a 17 kDa immunomodulatory cytokine produced mainly by Natural Killer Cells (NKT), T helper (Th) 17 and T follicular helper (TFH) cells. In TFH cells, IL-21 expression leads to autocrine signaling through the IL-21 receptor (IL-21R) and STAT3, which leads to additional transcriptional activation by Bcl6. As with IFN gamma for Th1 and IL-4 for Th2 cells, IL-21 is critical for TFH cell development and effector function. IL-21 plays a role in T cell-dependent B cell differentiation into plasma cells and memory cells, stimulation of IgG production and induction of apoptotic signaling in naive B cells. In Th17 cells, IL-21 expression and autocrine feedback through STAT3, IRF4 and ROR gamma t lead to upregulation of the IL-23R, thereby preparing Th17 cells for maturation and maintenance by the inflammatory cytokine IL-23. While upregulating IRF4 and ROR gamma t, IL-21 also mediates the downregulation of Foxp3. IL-21 deficient mice are protected from developing colitis upon chemical treatment by their inability to upregulate Th17-associated molecules. In comparison, elevated levels of IL-21 are present in chemically-induced colitis mouse models.IL-21是一种17 kDa的免疫调节细胞因子，主要由自然杀伤细胞（NKT），T辅助细胞（Th）17和T滤泡辅助细胞（TFH）细胞产生。在TFH细胞中，IL-21表达导致通过IL-21受体（IL-21R）和STAT3的自分泌信号传导，从而导致Bcl6进行额外的转录激活。与Th1细胞的IFNγ和Th2细胞的IL-4一样，IL-21对于TFH细胞发育和效应子功能至关重要。 IL-21在依赖T细胞的B细胞分化为浆细胞和记忆细胞，刺激IgG产生以及诱导天然B细胞中凋亡信号转导中发挥作用。在Th17细胞中，IL-21的表达和通过STAT3，IRF4和RORγt引起的自分泌反馈导致IL-23R上调，从而为Th17细胞做好准备，使其通过炎性细胞因子IL-23进行成熟和维持。 IL-21在上调IRF4和RORγt的同时，还介导Foxp3的下调。 IL-21缺陷小鼠由于无法上调与Th17相关的分子而受到化学治疗，免受发展性结肠炎的侵害。相比之下，化学诱导的结肠炎小鼠模型中存在IL-21的升高水平。For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.仅供研究使用。 不用于诊断过程。 未经明确授权不得转售。 |
| 特点： |
| - 高灵敏度 - 更高的灵敏度检测低水平的蛋白质- 宽动态范围- 样品消耗少 - 使用2–5 µL样品- 快速，轻松的工作流程 - 从样品到取样仅需2个小时，无需清洗- 无需购买专有仪器 - 可在任何实时PCR仪器上运行 |
| 数据： |
| IL-21 Human ProQuantum Immunoassay Kit<b>How ProQuantum immunoasssays work</b><br />(A) Antibody-antigen binding: Antibodies bind to two separate epitopes on the antigen (during a 1-hr incubation), which brings the two conjugated oligonucleotides into close proximity. (B) Ligation and amplification of signal (in a qPCR instrument): DNA ligase and a third splint oligonucleotide connector are added to ligate the two ends of the conjugated oligonucleotides, creating a 100-base DNA template. Once the ligase is inactivated at 95°C, the sample is amplified through 40 cycles of annealing and extension. The amount of DNA produced is measured after each amplification cycle via fluorescent dyes, which exhibit fluorescence that is directly proportional to the number of PCR product molecules (or amplicons) generated. This graph shows the fluorescence vs. cycle number curves for four different starting protein concentrations. The dashed line represents the fluorescence threshold. The cycle number required to reach the fluorescence threshold (threshold cycle or Ct) is plotted vs. protein concentration to create a standard curve.<b> ProQuantum免疫测定的工作原理</ b> <br />（A）抗体-抗原结合：抗体与抗原上的两个独立表位结合（在1小时的孵育过程中），这使两个结合的寡核苷酸紧密相邻。 （B）信号的连接和扩增（在qPCR仪器中）：添加DNA连接酶和第三个夹板寡核苷酸连接物以连接缀合的寡核苷酸的两端，从而产生100个碱基的DNA模板。连接酶在95°C失活后，样品会通过40个退火和延伸循环进行扩增。在每个扩增循环后，通过荧光染料测量产生的DNA量，该荧光染料显示的荧光与产生的PCR产物分子（或扩增子）的数量成正比。该图显示了四种不同起始蛋白浓度的荧光与循环数曲线。虚线表示荧光阈值。将达到荧光阈值所需的循环数（阈值循环或Ct）对蛋白质浓度作图，以创建标准曲线。 Human IL-21 Proquantum Immunoassay KitProQuantum kit contents. Components are color coded for ease of use. |
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