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AquaPure RNA Isolation Kit
Catalog #732-6370
Method
Cell Lysis
1. Vigorously add 2.5 ml cell lysis solution to an Oak Ridge centrifuge
tube (or other tube rated for high speed) containing 500 l body fluid
(e.g., cerebrospinal fluid, plasma, saliva, serum, sputum, synovial fluid,
urine, whole blood).
2. Vortex for 5 sec to mix thoroughly.
3. Heat sample to 65C for 5 min to complete lysis. Cool sample to room temperature. (This step is optional when testing for certain viruses such as hepatitis C.)
Protein-DNA Precipitation
1. Add 1 ml protein-DNA precipitation solution to the lysate.
2. Cap tube and invert gently 10 times and place tube into an ice bath for 10 min. 3. Centrifuge at 15,000 x g for 5 min. The precipitated proteins and DNA will form a tight pellet.
RNA Precipitation
1. Pour the supernatant containing the RNA (leaving behind the precipitated
protein-DNA pellet) into a clean Oak Ridge centrifuge tube (or other tube
rated for high speed) containing 3 ml 100% isopropanol (2-propanol). If
RNA yields are expected to be low, add a glycogen solution as a carrier
to the isopropanol (5 l of 20 mg/ml glycogen per 3 ml isopropanol).
2. Mix the sample by capping and inverting gently 50 times.
3. Centrifuge at 15,000 x g for 5 min; depending on yield, the RNA may or may not be visible as a small, translucent pellet.
4. Pour off supernatant and drain tube briefly on clean absorbent paper. Add 3 ml 70% ethanol, cap the tube, and invert it several times to wash the RNA pellet.
5. Centrifuge at 15,000 x g for 2 min. Carefully pour off the et
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