Akt/PKB kinase assay
- Preincubate
tubes containing 15ml of 50%
protein G sepharose and 5ml Akt-1
antibody (C-20, Santa Cruz) or 3ml
Akt-1 antibody (UBI #06-558) in 200ml
Akt buffer for 1 hour.
- Spin
down the gel and aspirate the supernatant.
- Add 1-1.5mg
protein lysates (Akt lysis buffer)
- Incubate
1-2 hrs. at 4C
- Wash
the gel with 3x 1ml Akt lysis buffer and 2x 1ml kinase buffer
- Aspirate
the remaining buffer completely
- Add 20ml of 1.5 Akt kinase reaction buffer
- Add 10ml of start solution
- Vortex
and incubate @RT for 15 minutes on shaker
- Stop
the reaction by adding 10ml of 5x
SDS sample buffer and boil for 5 minutes
- Apply 20ml
of recction on 15% SDS-PAGE
- Transfer
or dry up
- Autoradiography
Akt lysis buffer: Kinase
Buffer
20mM Tris-HCl
(pH 7.4) 20mM
Tris-HCl (pH 7.4)
5mM
EDTA 10mM
MgCl2
10mM
Na4P2O7 1mM
DTT
100mM
NaF 2mM
Na3VO4
2mM
Na3VO4
1%
NP-40
1mM
PMSF
10mg/ml aprotinin
1.5x Akt kinase reaction buffer
75mM
Tris-HCl (pH 7.4)
15mM
Mg Cl2
1.5mM
DTT
1.5mM protein kinase inhibitor
1.5mg/ml
BSA
Start solution
50mM cold ATP
3mCi g-32P
ATP
0.2mg/ml
histon H2B (Roche #223514 $120)
Lipofectamine PLUS
10cm plate
- 50-90%
confluent cells
- pre-complex
the DNA with the PLUS reagent; 4mg
DNA + 750 ml serum-free media-mix;
add 20ml PLUS reagent-mix ;incubate
15 minutes
- Dilute Lipofectamine reagent 30ml + 750 ml
serum-free medium-mix
- Combine 2+3-mix; incubate 15 minutes
- Replace the medium with 2.0ml serum-free
medium
- Add 4
complex to cells-mix; incubate 3 hours
- Add
complete media +1mL FBS
- Change
the media on the day after transfection
- Harvest
cells 24-48 hrs after transfection
CDNA synthesis (Roche #1483?88)
10x reaction buffer 2ml
25mM MgCl2 4ml
deoxynucleotide 2ml
OligoDT or random primer 2ml
Rnase inhibitor 1ml
AMVreverse transcriptase 0.8ml
Gelatin 0.4ml
RNA 1mg
of total RNA
H2O to total 20ml
- Vortex
and spin down
- 25C
for 10 minutes (annealing)
- 42 C
for 60 minutes
- boil
for 5 minutes
- on ice
5 minutes
- keep @
-20 C
- use 2ml for RT-PCR