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产品信息
Luna 探针一步法 RT-qPCR 4X 预混液,含 UDG 用于探针法实时荧光定量检测靶标 RNA。首先反转录酶将 RNA 转化为 cDNA,然后 DNA 聚合酶对 cDNA 进行扩增,完成靶标的实时荧光定量 PCR(qPCR),整个过程在单管内一次性完成。基于探针法的 qPCR / RT-qPCR 原理是利用聚合酶的 5´ → 3´ 外切酶活性,将淬灭的目标特异性探针切断发出荧光,并实时监测荧光值的增加,以测量每个循环中的 DNA 扩增。在荧光信号显著超过背景荧光的位置,可以确定 Cq 值。Cq 值可用于评估两个或多个样品的靶基因相对丰度。
该预混液基于探针法化学原理,采用一步法 RT-qPCR 流程,因此可与 Luna 通用探针一步法 RT-qPCR 试剂盒(NEB #E3006)进行对比。
Luna 探针一步法 RT-qPCR 预混液,含 UDG 为 4X 浓度,因此在靶标 RNA 量极低的应用中(例如:病原体检测),可提高样品加入量。通过对 5 个靶标进行不同浓度的线性、灵敏度检测,显示该产品在多重检测中性能更优。该预混液将一步法 RT-qPCR 所需组分整合到单个试管中,包括:Luna 温启动反转录酶、Taq 热启动 DNA 聚合酶、dNTP 和小鼠 RNase 抑制剂。Taq 热启动 DNA 聚合酶与新型温启动反转录酶联合使用,可通过基于适配体的可逆抑制来双重控制酶的活性。这种温控活化机制可避免热循环前的非特异扩增,从而让室温建立体系更安全。经改造的 Luna 温启动反转录酶具有更高的热稳定性,最佳反应温度为 55°C。此外,预混液还添加了独特矫对染料,可与多种 qPCR 仪器兼容,包括需要高 ROX 或低 ROX 参比信号的仪器。
RT-qPCR 的高灵敏度使得避免 DNA 污染尤为重要。由于先前扩增产物可作为后续反应的底物,因此反应体系加入 dUTP 和热敏 UDG 可防止模板残留污染。热敏 UDG 超过50°C时会完全失活,因此对 qPCR 性能没有影响。
该预混液包含无荧光的可见蓝色示踪染料,有助于透明管加样。该示踪染料与 qPCR 常用荧光基团的光谱没有重叠,也不会干扰实时检测。
- 产品类别:
- Luna® qPCR & RT-qPCR Products
- 应用:
- qPCR & RT-qPCR
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产品组分信息
本产品提供以下试剂或组分:
NEB # 名称 组分货号 储存温度 数量 浓度 -
M3019S -20 Luna® Probe One-Step RT-qPCR 4X Mix with UDG M3019SVIAL -20 2 x 0.53 ml 4 X Nuclease-free Water B1502AVIAL -20 2 x 1.5 ml Not Applicable
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M3019L -20 Luna® Probe One-Step RT-qPCR 4X Mix with UDG M3019LVIAL -20 2 x 1.25 ml 4 X Nuclease-free Water B1502AVIAL -20 4 x 1.5 ml Not Applicable
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M3019X -20 Luna® Probe One-Step RT-qPCR 4X Mix with UDG M3019LVIAL -20 4 x 1.25 ml 4 X Nuclease-free Water B1502AVIAL -20 8 x 1.5 ml Not Applicable
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M3019E -20 Luna® Probe One-Step RT-qPCR 4X Mix with UDG M3019EVIAL -20 1 x 10.5 ml 4 X Nuclease-free Water B1502EVIAL -20 1 x 25 ml Not Applicable
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相关产品
相关产品
- LunaScript™ 反转录 SuperMix 试剂盒
- Luna® Probe One-Step RT-qPCR 4X Mix with UDG (No ROX)
- Luna® 通用探针一步法 RT-qPCR 试剂盒
- Luna® 探针一步法 RT-qPCR 试剂盒(无 ROX)
- Monarch® 总 RNA 小量提取试剂盒
操作说明、说明书 & 用法
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操作说明
- Protocol for Luna® Probe One-Step RT-qPCR 4X Mix with UDG (NEB #M3019)
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应用实例
- The Luna 4X RT-qPCR Mix and Luna SARS-CoV-2 RT-qPCR Multiplex Assay Kit enable high throughput, automated detection workflows
- Optimized conditions for the CDC Influenza SARS-CoV-2 (Flu SC2) Multiplex Assay using Luna One-Step RT-qPCR Reagents
FAQs & 问题解决指南
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FAQs
- How do I use qPCR to determine the concentration of my material?
- Can I set up my Luna® RT-qPCR at room temperature?
- Should I use probe- or dye-based detection for my qPCR assays?
- How should I design primers for Luna® qPCR?
- How long should my amplicon be for qPCR?
- Why is the Luna® qPCR Mix blue? Will this dye interfere with detection?
- Can I run the Luna® qPCR Mix on my qPCR instrument?
- Can I use fast instrument settings with the Luna® qPCR Mix?
- Do I need to add ROX?
- What RNA samples can be used in RT-qPCR with the Luna® Mix?
- How much primer and probe should I use with the Luna® Universal Probe qPCR Master Mix?
- Can I use shorter cycling times?
- How much RNA template should I use in my RT-qPCR reaction?
- Can I run multiplex reactions with the Luna® Probe One-Step RT-qPCR Kits? Do I need to change my reaction conditions?
- Can I use a ROX-labeled probe with the Luna® Probe Mixes that contain a universal ROX reference dye?
- Can alternative probe based detection strategies be used with the Luna® Probe Mix?
- What temperature should I use for cDNA synthesis with Luna® RT-qPCR kits?
- Can I use longer targets in one-step RT-qPCR?
- Is the Monarch Total RNA Miniprep Kit compatible with Luna RT-qPCR Reagents?
- Are the Monarch RNA Cleanup Kits (NEB # T2030, #T2040, #T2050) compatible with Luna RT-qPCR reagents?
- What are the differences between the Luna One-Step RT-qPCR products (NEB #E3006, #E3007, #M3019, #M3029 and #L4001)?
- Other companies recommend a 2-min incubation at 25°C for carryover prevention, is a 30-sec incubation at 25°C sufficient?
- How can I perform a no-RT Control?
- Can I use the Luna Probe RT-qPCR mixes for viral detection?