| Protocol for mRNA amplification,非常详细的RT-PCR实验过程[Howard Hughes Medical | 点击: 作者:51protocol收集 来源: 时间: 2007-03-19 本站论坛
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b-ME |
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80 ul |
H20 |
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350 ul |
RLT |
Add 100uL of RLT to in-vitro transcription tube and mix well.
Transfer contents of in vitro transcription mix to 1.5mL RNase/DNase-free tube.
Add 330 uL of RLT mix. (stopping point –80 overnight)
Add 250ul 95% Ethanol and mix well by pipetting. (Do not spin here!)
Apply sample (700ul) to RNeasy mini spin column sitting in a collection tube.
Centrifuge 15 sec at >= 8000 x g. Discard flow through.
Protocol for mRNA amplification
aRNA purification using Qiagen RNeasy COLUMNS (cont’d)
Transfer RNeasy column to a new 2-ml collection tube (supplied).
Add 500ul Buffer RPE (which must contain ethanol) and centrifuge 15 sec at >=8000 x g.
Discard flow-through but re-use tube.
Add another 500ul Buffer RPE to the RNeasy column.
Centrifuge for 2 min at maximum speed.
Discard flow-through but re-use tube
Add another 500ul Buffer RPE to the RNeasy column.
Centrifuge for 2 min at maximum speed.
Place RNeasy spin column into a new 1.5-ml collection tube (supplied).
Centrifuge for 1 min at maximum speed to completely dry column.
Transfer RNeasy column into a new RNase, DNase-free 1.5-ml collection tube (not supplied).
Add 30ul RNase-free water directly onto membrane.
Centrifuge for 1 min at >=8000 x g to elute.
Repeat if expected yield is >= 30ug.
Check RNA concentration and quality by measuring OD260 and OD260/280.
Check RNA quality by running a gel.
Add 1uL of Sample to 1-2uL of loading dye.
Incubate at 65C for 10min. Put on ice immediately after incubation.
Run on a 1.25% agarose gel (2.5g agarose in 200mL 1X MOPS) in 1X MOPS Buffer for 45 minutes to 1.5hr at 165 V.
second round amplification
In PCR reaction tube, mix
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