Silencer™ Select Negative Control No. 1 siRNA
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Invitrogen™

Silencer™ Select Negative Control No. 1 siRNA

Silencer Select Negative Control No. 1 is a bioinformatically designed, non-targeting siRNA crucial for siRNA experiments. Matching Silencer Select chemistry, it ensures minimal off-target effects and is an essential siRNA negative control for achieving clear, accurate gene silencing results
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Catalog NumberQuantity
43908435 nmol
439084440 nmol
Catalog number 4390843
Price (CNY)
3,773.00
Each
Add to cart
Quantity:
5 nmol
Price (CNY)
3,773.00
Each
Add to cart

Silencer Select Negative Control No. 1 siRNA is a bioinformatically designed, non-targeting siRNA used as a negative control siRNA. It distinguishes specific effects of siRNA-mediated gene silencing from non-specific procedural effects, ensuring minimal off-target effects and providing a reliable baseline for comparison. Validated through extensive testing, it has minimal impact on gene expression, cell proliferation, viability, and morphology, making it essential for accurate results in human, mouse, and rat cells.

Negative controls, such as non-targeting siRNAs, are critical for distinguishing the specific effects of siRNA-mediated gene silencing from non-specific effects caused by the experimental procedure itself. Silencer Select negative control No. 1 is designed to ensure minimal off-target effects, providing a robust baseline for comparing the results of siRNA-treated samples. This negative control siRNA shares the same chemical modifications as other Silencer Select siRNAs, ensuring enhanced efficacy and specificity.

Properties of Silencer Select Negative Control siRNAs include:

  • No significant sequence similarity to human mouse, or rat genes
  • Minimal effects on cell proliferation and viability
  • Silencer Select modifications for enhanced specificity

Validated through extensive testing, including microarray analysis and multi-parametric cell-based assays, Silencer Select Negative Control No. 1 has been proven to have minimal impact on gene expression, cell proliferation, viability, and morphology. This makes it an essential tool for researchers aiming to achieve accurate and consistent phenotypic data in human, mouse, and rat cells.

What are Silencer Select siRNAs?

Silencer Select siRNAs represent our next-generation siRNAs, incorporating the latest advancements in siRNA design, off-target effect prediction algorithms, and chemical modifications. These improvements result in siRNAs with unrivalled efficacy, potency, and specificity, leading to fewer failed experiments and more consistent, cleaner phenotypic data.

Quality control

Each Silencer Select siRNA is synthesized and purified in state-of-the-art facilities to meet the highest quality standards. Our rigorous quality control procedures include MALDI-TOF mass spectrometry analysis and analytical HPLC to monitor purity. We also assess each annealed siRNA by gel electrophoresis to ensure proper strand annealing. The result is a premium-quality siRNA that is purified and ready for use.

For Research Use Only. Not for use in diagnostic procedures.
Specifications
For Use With (Application)RNAi, Transfection
Label or DyeUnconjugated
Product LineSilencer™, Silencer™ Select, Ambion™
Product TypesiRNA
PurityHPLC
Quantity5 nmol
Shipping ConditionRoom Temperature
Control TypeNegative Control
RNAi TypesiRNA
Unit SizeEach
Contents & Storage
Contains dried siRNA at (5 nmol) and Nuclease-free Water (1.75 mL), shipped at ambient temperature. Upon receipt, store siRNAs in a non-frost-free freezer at or below –20°.

Frequently asked questions (FAQs)

What are the benefits of using a vector to deliver RNAi?

Vector technologies allow you to:

Achieve transient or stable target knockdown
Perform RNAi in any cell type, even hard-to-transfect, primary, and non-dividing cells
Regulate gene inhibition with inducible siRNA expression
Select for a pure population of cells stably expressing an siRNA sequence
Control gene expression in vivo with tissue-specific promoters

Find additional tips, troubleshooting help, and resources within our RNAi Support Center.

Why are my cells dying after transfection?

We would suggest running a transfection reagent control only to determine if your cells are sensitive to the transfection reagent. Additionally, you can try using different cell densities and siRNA concentrations to diminish any toxic effects from the transfection itself.

Find additional tips, troubleshooting help, and resources within our RNAi Support Center.

I transfected my siRNA and the mRNA levels are down, but the protein is not. Why is that?

In some cases, knockdown of a protein can be affected by other variables such as protein turnover rate, even though the RNA is knocked down. Additionally, a longer time course may be needed to see an effect on protein compared to mRNA.

Find additional tips, troubleshooting help, and resources within our RNAi Support Center.

I am not getting my target knockdown. What could be the cause of this?

Please see the following possibilities and suggestions:

- How many siRNA did you test? Is there any knockdown? If there is no knockdown (<10%) in any of the siRNA, then the assay is likely the problem. Try using a different qRT-PCR assay to assess knockdown.
- What was the positioning of the qRT-PCR assay target site relative to the cut site for the siRNA? If greater than 3,000 bases away, the problem could be alternative splice transcripts.
- What are the Cts for the experiment? They should be below 35 in a 40-cycle qRT-PCR experiment.
- Did you confirm the siRNA got into the cell? We recommend using a validated positive control siRNA to check the transfection efficiency.

Find additional tips, troubleshooting help, and resources within our RNAi Support Center.

I am not getting any knockdown with my siRNA. What do you suggest I try?

Please see the following possibilities and suggestions:

- Were the mRNA levels checked? The most reliable method is real-time PCR. In some cases, knockdown of a protein can be affected by other variables, such as protein turnover rate, even though the RNA is knocked down.
- How is the RNA being isolated? Has the quality of the isolated RNA been checked? Ensure that the RNA has not been degraded.
- Was a positive control used? This can help to determine whether the reagents are working and whether the siRNA was delivered correctly to the cell. Run your experiment in parallel with the positive control siRNA.
- Was a transfection control used? What is the percentage of transfected cells?
- Was a time course used? Generally, gene silencing can be assessed as early as 24 hours posttransfection. However, the duration and level of knockdown are dependent on cell type and concentration of siRNA.
- Was optimization of transfection conditions performed? You can try using different cell densities and siRNA concentrations.
- Which concentration of siRNA did you use? We recommend testing multiple concentrations between 5 nM and 100 nM.

Find additional tips, troubleshooting help, and resources within our RNAi Support Center.