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For the CUT&RUN assay, we recommend adding 25 μl of Digitonin Solution per 1 ml buffer. Not all cell lines exhibit the same sensitivity to digitonin, so it may be necessary to adjust the final volume of digitonin in the buffer to get optimal permeabilization of your specific cell line. Cell permeabilization can be tested by combining an equal volume of cell suspension and 0.4% Trypan Blue Stain. Optimal cell permeabilization will result in staining of >90% of the cell population.
Like the chromatin immunoprecipitation (ChIP) assay, Cleavage Under Targets and Release Using Nuclease (CUT&RUN) is a powerful and versatile technique used for probing protein-DNA interactions within the natural chromatin context of the cell (1-4). CUT&RUN provides a rapid, robust, and true low cell number assay for detection of protein-DNA interactions in the cell. Unlike the ChIP assay, CUT&RUN is free from formaldehyde cross-linking, chromatin fragmentation, and immunoprecipitation, making it a much faster and more efficient method for enriching protein-DNA interactions and identifying target genes. CUT&RUN can be performed in less than one day, from live cells to purified DNA, and has been shown to work with as few as 500-1,000 cells per assay (1,2). Instead of fragmenting all of the cellular chromatin as done in ChIP, CUT&RUN utilizes an antibody-targeted digestion of chromatin, resulting in much lower background signal than seen in the ChIP assay. As a result, CUT&RUN requires only 1/10th the sequencing depth that is required for ChIP-seq assays (1,2). Finally, the inclusion of simple spike-in control DNA allows for accurate quantification and normalization of target-protein binding that is not possible with the ChIP method. This provides for effective normalization of signal between samples and between experiments.
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| Cat. # | Size | Qty. | Price |
|---|---|---|---|
| 16359L | 2.4 ml (2 x 1.2 ml) |
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