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SPLIT RNA Extraction Kit

The SPLIT RNA Extraction Kit enables a fast and highly efficient extraction of RNA that is free of genomic DNA contamination. The RNA can be recovered as total RNA or split into two fractions, large RNA and small RNA, facilitating the analysis of e.g., mRNA and miRNA from the same sample. Thus the RNA obtained is ideal for seamlessly preparing libraries for Next Generation Sequencing of total RNA or its large and small fractions or any other demanding downstream application.

High Quality, High Yield

RNA extracted with the SPLIT RNA Extraction Kit has a high RIN quality score for all types of samples. A RIN of 10 and a 28S / 18S rRNA ratio of 2.7 can be obtained from cell culture. Extractions from tissue samples usually result in RNA with a RIN of 8.0 – 9.5.

Small RNA and Large RNA Fractions

The SPLIT kit can be used for the extraction of either total RNA (< 17 nt to > 10,000 nt) or for the isolation of the large RNA fraction (cut-off at ~ 150 nt), with the option to obtain the small RNA fraction separately (Figure 1).

Rapid Turnaround

RNA can be extracted within 30 minutes.

Efficient miRNA Recovery

Efficient recovery of siRNA and miRNA down to 17 nt in the total RNA or in the small RNA fraction has been shown in spike-in experiments with small RNA markers (Figure 2).

Figure 1. Agarose gel analysis of RNA samples extracted with the SPLIT kit or by a Trizol / isopropanol precipitation method. In the Trizol extracted sample genomic DNA is visible as a slot-retained band, whereas RNA obtained with the SPLIT kit is free from detectable genomic DNA contamination.

Free From Genomic DNA Contamination

Due to its highly optimized, phenol-extraction based protocol, the genomic DNA (gDNA) content in the extracted RNA sample is negligible compared to conventional methods (Figure 1).

No DNase Treatment, No RNA Degradation

The SPLIT protocol does not require DNase treatment which is often used for the removal of genomic DNA in the sample and can be a reason for degradation of RNA.

No gDNA Removal Column, No RNA Size Bias

The SPLIT workflow does not require the use of gDNA removal columns. Their function is based on size exclusion which can impose a size bias on the extracted RNA as well.

Figure 2. Separation of SPLIT RNA samples on a polyacrylamide gel, demonstrating the splitting of large and small RNA at a threshold of ~150 nt. The total RNA sample comprising small and large RNA is shown as comparison.


SPLIT Workflow

The SPLIT RNA Extraction Kit contains reagents for the isolation of total RNA or the large RNA fraction from 48 samples, or small and large RNA fractions from 24 samples.