Qiagen/定制miRCURY LNA miRNA检测探针/339115
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商品介绍
Custom miRCURY LNA miRNA Detection Probes
Print
For ultra-sensitive and specific detection of novel miRNA sequences by in situ hybridization (ISH) or Northern blotting
- Superior sensitivity and specificity for detecting low-abundance miRNAs
- Custom-designed probes for targeting novel miRNA sequences
- A wide selection of available labels enables multiplexing and co-localization
- Ideal for standardized protocols for automated, high-throughput ISH
- Fast and easy workflow using the one-day miRNA ISH protocol
Custom miRCURY LNA miRNA Detection Probes enable specific detection of novel miRNAs, miRNAs not covered by the predesigned miRCURY LNA miRNA Detection Probes or other short, ncRNA sequences. These custom miRNA detection probes are LNA enhanced and are designed by our technical support scientists, according to the same design rules used for our predesigned miRNA detection probes.
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Cat No./ID:339115 miRCURY LNA miRNA Custom Detection Probe (1 nmol) Go to GeneGlobe1 nmol miRCURY LNA miRNA Custom Detection Probes with option of different labels, provided in tube format |
Cat No./ID:339116 miRCURY LNA miRNA Custom Detection Probe (10 nmol) Go to GeneGlobe10 nmol miRCURY LNA miRNA Custom Detection Probes with option of different labels, provided in tube format |
Custom miRCURY LNA miRNA Detection Probes are intended for molecular biology applications. These products are not intended for the diagnosis, prevention, or treatment of a disease.
Product Details
Performance
Get optimal, customized ISH control probes
Custom miRCURY LNA miRNA Detection Probes are great for detecting any small RNA sequences, and they also serve as valuable controls in ISH experiments. Our LNA experts can design custom probes in a number of different ways so you can confirm signal specificity of your ISH experiment. As with any experiment, interpretation of the results is only as good as the controls. For ISH, there is no single best control, so it is preferable to have as many controls as possible to provide confidence in the observed expression pattern.Great for use as mismatch negative control probes
Mismatch probes are custom designed specifically for use alongside the target probe. A mismatch probe differs by 1–3 nucleotides towards the target. Our LNA design experts will identify the optimal number of mismatches and LNA positions, to reach a Tm value close to that of the target probe.Using the same ISH protocol on serial sections, one should obtain little or no stain with the mismatch negative control probe. An example of a custom mismatch negative control probe can be seen in Figure 1F from the following publication: Nielsen et al. (2011). High levels of microRNA-21 in the stroma of colorectal cancers predict short disease-free survival in stage II colon cancer patients. Clin Exp Metastasis. 28(1):27–38. PMID: 21069438.Target-specific positive control probes
The short length of LNA probes enables the design of alternative probes that target slightly different regions, shifted by a few nucleotides, even within the short sequence of a mature miRNA (see figure Binding sites of four different LNA probes targeting the mature and precursor miRNA-21). Obtaining the same hybridization pattern with different probes targeting the same miRNA is a valuable positive control in ISH experiments. Our LNA experts can custom design alternative probes with LNA positions and a Tm value similar to that of the target probe.Pre-miRNA detection probes
Another valuable positive control probe to rule out non-specific cross hybridization is a loop-directed probe, designed to bind to the loop sequence of the precursor miRNA. This probe should confirm the same hybridization pattern as the target probe that binds to the mature miRNA sequence. However, the expression level of the pre-miRNA is likely to be lower than that of the mature miRNA.An example of target-specific positive control probes, including a loop-directed probe, can be seen in Figure 1 from the following publication: Rask et al. (2011) High expression of miR-21 in tumor stroma correlates with increased cancer cell proliferation in human breast cancer. APMIS. 119(10):663-73. PMID: 21917003.Principle
Coverage
Custom miRCURY LNA miRNA Detection Probes are a great choice if a predesigned probe for your miRNA target is not available.The probesare highly suited for use in both in situ hybridization (ISH) and Northern blotting experiments. The probes are available with a selection of 3", 5" or dual (3" and 5") labels: DIG, biotin and fluorescein (FAM). Ready-to-label probes for custom labeling are also available.One-day miRNA ISH protocol
The one-day miRNA ISH protocol is designed for detection of miRNA in FFPE tissue sections. The protocol uses the non-mammalian hapten digoxigenin (DIG) or fluorescein and has been optimized for a one-day experimental setup. First, miRNAs are demasked using Proteinase K, allowing double-DIG or double-fluorescein labeled LNA probes to hybridize to the miRNA sequence. The DIG or fluorescein haptens are recognized by a specific anti-DIG or anti-fluorescein antibody, respectively, that is directly conjugated to alkaline phosphatase (AP). AP converts the soluble substrates 4-nitro-blue tetrazolium (NBT) and 5-bromo-4-chloro-3’-indolylphosphate (BCIP) into a dark blue precipitate. A nuclear counterstain is applied to the sections to allow better histological resolution.Application in IHC and pathology labs and more
miRCURY LNA miRNA Detection Probes are useful in a variety of tissue and cell preparations, including whole mounts, single cells and sections from fresh frozen and formalin-fixed paraffin-embedded (FFPE) tissues, such as biobank-archived material. Thus, these probes can be used for routine ISH analysis of FFPE samples. The probes are compatible with a variety of ISH protocols using both chromogenic or fluorescent detection. Furthermore, our ISH protocols can be used together with IHC to perform double stains.LNA enhancement in the miRCURY LNA miRNA Detection Probes increases probe affinity and provides Tm-normalization, ensuring that all probes perform optimally under the same conditions. This facilitates very robust standardized protocols, making the probes a great tool for use in automated ISH protocols. Plus, the high signal-to-noise ratio facilitates automated image analysis.Recommendations for FFPE ISH
For miRNA ISH experiments in FFPE tissue sections, we recommend using the one-day miRNA ISH protocol. Refer to the kit handbook if you are using dual-labeled probes. The protocol is optimized for use with the miRCURY LNA miRNA Detection Probes and contains fewer steps, providing a very fast procedure compared with IHC staining protocols. The miRCURY LNA miRNA ISH Buffer Set (FFPE) is developed specifically for use with the miRCURY LNA miRNA Detection Probes.Procedure
The one-day miRNA ISH protocol minimizes time-consuming optimization steps, enabling fast and optimal miRNA ISH analysis using a colorimetric antibody-based development system for DIG-labeled probes. Each step of the procedure is detailed, including tissue sectioning, recommended selection of miRNA-specific positive and negative control probes, incubation times and temperatures, miRCURY LNA miRNA Detection Probe concentrations and substrate incubations. Refer to the kit handbook for details.
Applications
The miRCURY LNA miRNA Detection Probes can be used for a large number of applications, including cellular and sub-cellular miRNA localization studies and determination of spatial miRNA expression, as well as Northern blotting experiments. The robustness of the ISH procedure makes them a great tool for use in both high-throughput ISH analysis and localization studies of individual miRNAs.
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品牌介绍
QIAGEN是一家专业化致力于生物分子样品制备解决方案的跨国经营企业，总部位于德国。1984年，QIAGEN在德国成立，1996年在美国纽约纳斯达克上市。QIAGEN拥有超过1000项专利和认可证明，在18个国家设立了分公司，代理商服务国超过40个，在全球有超过400000的用户。QIAGEN提供的产品超过500类，包括各种试剂，耗材和自动化纯化工作站。这些产品用于样品采集，稳定，核酸或蛋白的分离，纯化和检测中，不仅广泛的应用于科研领域的各个方面，在生物技术，制药，法医研究，食品安全检测，畜牧业和分子诊断领域也得到了广泛的应用。QIAGEN产品的卓越品质和在应用中的出色表现使得其成为样品处理中标准的代名词。
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