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  • polyA Spin™ mRNA Isolation Kit

    Description

    The polyA Spin™ Kit is a rapid and convenient alternative to traditional column chromatography for the isolation of full-length poly(A)+ eukaryotic messenger (mRNA) from samples of "total" RNA. Poly(A)+ RNA selection is made by affinity chromatography using spin columns prepackaged with NEB's Oligo (dT)25-Cellulose beads (NEB #S1408S). Prepared essentially by the method of Gilham (1), this solid support has found widespread use in the "batch" preparation of low abundance mRNA (2). Its high binding capacity and rapid hybridization kinetics make it an ideal support for chromatographic poly(A)+ RNA selection. Intact mRNA can be isolated in as little as forty minutes from multiple cell lysates or samples of "total" RNA by spin chromatography in a microcentrifuge.
    Reagents sufficient for the isolation and subsequent precipitation of poly(A)+ RNA from eight samples of as much as 1.0 mg of "total" RNA are provided. The isolated RNA can be used for in vitro translation experiments, the preparation of cDNA libraries, Northern analysis, subtractive hybridization or differential display.

    Kit Components

    The following reagents are supplied with this product:

    Store at (°C)Concentration
    microcentrifuge tubes containing oligo (dT)25 -cellulose beads
    Glycogen Solution10 mg/ml
    Elution Buffer (S1560, S1550)1X
    Wash Buffer (15 ml)1X
    Low Salt Buffer1X
    5 M NaCl500 mM
    3M NaAC300 mM
    microcentrifuge spin columns
    sterile microcentrifuge tubes
    Elution Buffer1X
    Wash Buffer I1X

    Advantages and Features

    Features

    • Shorter Purification Time
    • Reduced Isolation Volumes
    • Maintains Resolution: When compared to a 100 mg column of high quality oligo (dT) cellulose in 1.0 mg total RNA sample range.

    Properties and Usage

    Storage Temperature

    4°C

    Quality Control

    Quality Assurance Statement

    • Each lot of the polyA Spin mRNA Isolation Kit is assayed for its ability to isolate mRNA from rat liver total RNA.

    Notes

    1. The polyA Spin mRNA Isolation Kit complements and serves as an alternative to traditional column chromatography isolation of mRNA. Each polyA Spin spin column has the same column performance as a standard 100 mg column of high quality oligo (dT)-cellulose in the 1.0 mg total RNA sample range. Thus the shorter purification times and reduced working volumes associated with spin chromatography are realized while maintaining column chromatography levels of performance. This is of particular importance in the isolation of low abundance messenger RNA (1). For total RNA samples greater than 1.0 mg initial "first round" isolation of poly(A)+ material should be done by column or "batch" (NEB #S1408S) chromatography (2). First round isolation of poly(A)+ RNA by either column or spin chromatography typically yields a product contaminated with poly(A)– RNA. PolyA Spin spin chromatography is ideal for "second round" purification, yielding material with an A260/280 of 1.9 or greater with minimal product loss. The protocol has been optimized for the isolation of poly(A)+ RNA from 0.1–1.0 mg of total RNA isolated from eukaryotic tissue or cells that contain between 1–5% mRNA. The amount of poly(A)+ RNA isolated will vary with the type of tissue or cells used.

    References

    1. Gilham, P.T. (1964). J. Amer. Chem. Soc.. 86, 4982.
    2. Farrell, R.E. (1993). RNA Methodologies. 104-106.
    3. Jacobson, A. (1987). S. Berger and A. Kimmel(Ed.), Methods Enzymol.. 152, 254-257. San Diego: Academic Press.

    Supporting Documents

    Material Safety Datasheets

    The following is a list of Material Safety Data Sheets (MSDS) that apply to this product to help you use it safely. The following file naming structure is used to name these document files: [Product Name] MSDS. For international versions please contact us at info@neb.com.

    Manuals

    The Product Manual includes details for how to use the product, as well as details of its formulation and quality controls. The following file naming structure is used to name these document files: manual[Catalog Number].
    1. Isolation of mRNA (S1560)
    2. Batch Method Protocol (S1560)

    Selection Tools

    Do not freeze. To preserve its components’ integrity the kit has to be stored between 2 and 8 degrees.
    The denaturing step is critical for adequate mRNA recovery so please, make sure your sample is thoroughly denatured before incubating it with the beads.
    Centrifugation speed should never exceed 12,000 x g