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Reverse Transcription is carried out with the SuperScript First-Strand Synthesis System for RT-PCR. The following procedure is based on Invitrogen¡¯s protocol.

1. Prepare the following RNA/primer mixture in each tube:

Total RNA 5 mg
random hexamers (50 ng/ml)  3 ml
10 mM dNTP mix 1 ml
DEPC H2O  to 10 ml

2. Incubate the samples at 65¡ãC for 5 min and then on ice for at least 1 min.
3. Prepare reaction master mixture. For each reaction:

10x RT buffer 2 ml
25 mM MgCl2  4 ml
0.1 M DTT 2 ml
RNAaseOUT 1 ml

4. Add the reaction mixture to the RNA/primer mixture, mix briefly, and then place at room temperature for 2 min.
5. Add 1 ml (50 units) of SuperScript II RT to each tube, mix and incubate at 25¡ãC for 10 min.

6. Incubate the tubes at 42¡ãC for 50 min, heat inactivate at 70¡ãC for 15 min, and then chill on ice.
7. Add 1 ml RNase H and incubate at 37¡ãC for 20 min.
8. Store the 1st strand cDNA at -20¡ãC until use for real-time PCR.

[ Last edited by 350784478 on 2009-8-17 at 17:14 ]
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