Multiporator
Transfection Protocol
Protocol No. 4308 915.035 12/1999
Cell line
Primary cells: Adult heart muscle cells from rat, 6
days in culture
Transfection with
Plasmid pCMV--galactosidase (in bidistilled
H
2O)
Electroporation buffer
Eppendorf Isoosmolar Electroporation Buffer (PI)
Culture medium
M199 / HEPES (2 mM carnithin, 5 mM taurine, 10 M
cytosine-arabinofur.)+ 20% FCS
Outgrowth medium
HEPES-buffer (140 mM NaCl, 3.6 mM KCl, 1.2 mM MgSO
4,
1 mM CaCl
2, 11 mM glucose, 100 U/ml penicillin, 100 g/ml streptomycin,
20 mM HEPES, pH 7.4) without phenol red + 10% FCS
Cuvette
Eppendorf, 2 mm gap width, 400 l
Temperature
RT (20-25 C)
Reference
Dr. Gerhild Taimor Justus-Liebig-Universitt
Physiologisches Institut Aulweg 129 D-35392 Gieen
Phone +49 641 9947243 Fax +49 641 9947239 mail: gerhild.taimor@physiologie.med.uni-giessen.de
- Harvest the cells by collagenase treatment (0.4 mg/ml, 30 min., 37
C) and centrifuge them (for 2 minutes, 300 x g, at room temperature).
- Resuspend the cells in M199 / 0.5% FCS, determine the number of cells
and centrifuge them (for 2 minutes, 300 x g, at room temperature). Remove
supernatant.
Note: The overall incubation time in the Eppendorf Electroporation
Buffer must not exceed 30 minutes to guarantee a successful electroporation!
- Resuspend the cells in Isoosmolar Electroporation Buffer. When doing
so, set the cell concentration to 1 x 104 - 105
cells/ml.
- Add and mix plasmid DNA (5-20 g/ml final concentration, in bidistilled
H2O).
- Transfer 400 l cell suspension into electroporation cuvettes (2 mm
gap width). The cell suspension must be free of air bubbles.
- Electroporation:
Mode
Eukaryotes
Voltage (V)
100 V
Time constant (T)
50 s
No. of pulses (n)
1
- After the pulse, allow the cell suspension to stand in the cuvette
for 10 minutes at room temperature.
- Carefully transfer the cell suspension from the cuvette to 3-5 ml HEPES medium without phenol red / 20% FCS, and
cultivate them in a 35 mm culture dish.
Detection methods for transfection:
The expression of the plasmid pCMV--galactosidase can be
detected clearly after 24-48 hours with X-gal-staining under a microscope.
'"/>Source:
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