It is difficult to directly compare the effectiveness of si RNA versus sh RNA on a per molecule basis because RNA polymerase III (Pol III) promoters such as U6 or H1 commonly used to express sh RNAs can make thousands of copies of sh RNA from a single DNA template.

However when both si RNA and sh RNA are produced the same way, e.g.

Using any form of DNA construct, except the PCR template format found in Allele’s Line Silence platform, requires creating DNA constructs and sequence verification; a taxing work load if multiple genes need to be studied.

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That has been a reason why researchers resort to validate RNAi target sequences by themselves or through custom services.

With Allele Biotech's powerful and unique viral packaging services, patent-protected RNAi platform, and state-of-the-art fluorescent protein markers, we provide a full service for RNA interference, including RNAi expression viral packaging, fluorescent protein-based RNAi validation, and even large scale RNAi screening.

Additional features include: Viruses that can integrate into the chromosomes of most host cells are often used to carry sh RNA or mi RNA for RNAi screening because of their high transduction rates.

Most researchers use standard cloning procedures when trying to insert sh RNA templates into lentiviral vectors, i.e.

Additional features include: RNAi cassettes (invented in 2001, under US patents 7,294,504, 7,422,896, 7,625,750, and China patent CN02828345.7) use engineered human U6 polymerase III promoter and modified terminator for high-level, precise si RNA expression inside mammalian cells. It takes only a few hours to generate RNAi reagents ready for transfection.

It is particularly suitable for screening for effective RNAi targets with convenience at a low cost.To solve this problem Ori Gene has created a fusion construct, which incorporates a full-length Ori Gene True Clone and a luciferase reporter gene, the RNAi Validation Vector.Using this new tool it is possible to measure the effectiveness of RNAi constructs with targeted specificity using nothing more than a luminescence reader.There continues to be some unpredictability in the use of RNA interference (RNAi) for gene silencing, which often requires time-consuming effort to determine effectiveness, select the best constructs, and better optimize use in knockdown applications.Testing requires the use of antibodies (which may not be available), expensive Q-PCR probes, phenotypic measurements, or expensive equipment.synthesized chemically, sh RNA is reported to be somewhat more effective.